CN103302906A - Ultra-high-modulus polyethylene fiber reinforced plastic rod and manufacturing method thereof - Google Patents
Ultra-high-modulus polyethylene fiber reinforced plastic rod and manufacturing method thereof Download PDFInfo
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Abstract
The invention discloses an ultra-high-modulus polyethylene fiber reinforced plastic rod and a manufacturing method thereof. The ultra-high-modulus polyethylene fiber reinforced plastic rod is characterized in that longitudinally arranged ultra-high-modulus polyethylene fibers are arranged inside the inner layer of matrix resin, an ultra-high-modulus polyethylene fiber wrapping layer wraps the outer wall of the inner layer of the matrix resin, and a matrix resin outer layer wraps the outer wall of the ultra-high-modulus polyethylene fiber wrapping layer. The preparation method comprises the following steps of: (1) preparing the matrix resin; (2) carrying out gum dipping on the ultra-high-modulus polyethylene fiber; (3) pre-forming an inner core; (4) winding the ultra-high-modulus polyethylene fiber and carrying out extrusion-drawing molding by a mold; and (5) curing-forming to obtain the ultra-high-modulus polyethylene fiber reinforced plastic rod. The ultra-high-modulus polyethylene fiber reinforced plastic rod disclosed by the invention has good characteristics of simple structure, light weight, high strength, high modulus, small bending radius, bending resistance, folding resistance, very high mechanical strength, extremely good toughness, greater impact force bearing capacity, greater drawing force bearing capacity and the like, and can be applied to the industries of construction, ocean, mining, communication engineering and the like.
Description
Technical field
The present invention relates to the fibre reinforced plastics technical field, specifically a kind of ultra high modulus polyethylene fibre reinforced plastics bar and preparation method thereof.
Background technology
Fibre reinforced plastics (English name is Fiber Reinforced Plastics, is called for short FRP) were come out the forties in 20th century, were a kind of advanced composite material (ACM)s, were the third-largest modern structure materials behind steel and concrete.The FRP material is to be reinforcing material with short fiber that cut or continuous and fabric thereof, is matrix material with thermosetting or thermoplastic resin, and mixes an amount of assistant, the high-performance section bar material that is composited through moulding process.
The FRP material has following good characteristic: high-strength, tensile strength is about 1.5-6 times of regular reinforcement; Light weight, density only are the 1/6-1/3 of common iron; Anticorrosive, the influence of intensity acid and alkali caustic corrosion medium; Underrelaxation; Non magnetic, do not influence the propagation of electromagnetic signal; Anti-fatigue performance is good, generally is higher than steel fatigue life; Elastic modelling quantity is between concrete and steel; Limit elongation is 1%-3%; The temperature variable coefficient is suitable with concrete; Compare with steel and to have the thermal coefficient of expansion more compatible with concrete or rock.Therefore, fiber reinforced plastics (FRP) bar has a wide range of applications in building, ocean, mining and other industry.
Most of fiber reinforced plastics (FRP) bar is by pultrusion molding process production and has linear or consistent profile.Conventional pultrusion molding process comprises: from the armature material source a branch of reinforcement material (for example fiber or filament) that stretches; By making reinforcement material pass resin bathing pool in the open slot and wetting fiber and soaking into their (preferably by can thermal coagulation fluoropolymer resin); Will be by resin wetted and the reinforcement material that soaks into Shu Ladong by shaping dies, with the aligned fibers bundle and make it form suitable cross-sectional configuration; With when keeping silk to keep tension force in mould cured resin.Because fiber advances fully and passes pultrusion molding process and be not cut or shred, make product longitudinally (i.e. the direction that is pulled along filament) have extra high tensile strength.
The Chinese patent " fibre-reinforced plastic steel twisting-wire composite rib " that Harbin Institute of Technology submitted on April 19th, 2006, the patent No. 200610009936.6, a kind of fibre reinforced plastics-steel twisting-wire composite rib is disclosed, it comprises thin steel strand wires or the ultra-fine high-strength steel tow of core, externally parcel form to the fibre reinforced plastics integument.Utilize steel strand wires and FRP material characteristics separately, carry out compound to two kinds of materials, produce a kind of new plastic fiber reinforced plastics (FRP)-steel twisting-wire composite rib, overcome homogenous material deficiency separately, have lightweight, high-strength, high-modulus, corrosion-resistant, high-elongation, and advantage such as pseudo-ductility, be the safe and reliable substitution material of steel in the civil engineering structures such as reinforced-concrete, bridge cable.The Chinese patent application that the special human relations of blue Dare Brandes were submitted on May 17th, 2010 " forming volume so that the reinforcement that the fiber of transportation is strengthened ", application number 201080002833.1, a kind of compound reinforcement web is disclosed, formed by rove in a series of, first and second helical forms of at least one rove are twined along opposite winding direction and are twined interior rove, and the resin infiltration is passed wherein.The bar equipment structure forms and allows the moment of torsion bending, and this moment of torsion club foot is wound to form the volume that many times twines with the web of the rectangular axis of length of web with the web that allows to form.This web advances in the winding framework of the rotation that is formed by a series of posts around hard direct rotary shaft axis.Volume is held in place, and shifts out framework simultaneously in order to volume is transported at a distance.A long way off, volume is placed in the similar winding framework, and Len req is pulled out and be cut to web from volume.
At present, the fiber reinforcement bar of extensive use both at home and abroad has fiberglass-reinforced plastic lever (GFRP), basalt fibre reinforced plastics bar (BFRP) and aromatic polyamide fiber reinforced plastics bar (KFRP).Fiberglass-reinforced plastic lever (GFRP) and basalt fibre reinforced plastics bar (BFRP) be owing to be the inorfil reinforced composite, has problems such as not anti-bending, frangibility, weight are bigger; Aromatic polyamide fiber reinforced plastics bar (KFRP) is though have relatively low bending radius, and its material expression power in application is crisp, can't overcome shortcomings such as its creasing resistance is poor, bending angle is little.
Summary of the invention
One object of the present invention is to provide a kind of and has simple in structurely, and quality is slim and graceful, the intensity height, the modulus height, bending radius is little, and is counter-bending anti-folding, have very high mechanical strength and splendid pliability, can carry the ultra high modulus polyethylene fibre reinforced plastics bar of bigger impulsive force and pulling force.
In order to reach above purpose, the technical solution adopted in the present invention is: this ultra high modulus polyethylene fibre reinforced plastics bar, it is characterized in that: the ultra high modulus polyethylene fibre that is provided with vertical arrangement in the inside of matrix resin internal layer, ultra high modulus polyethylene fibre winding layer is coated on the outer wall of matrix resin internal layer, is coated with the matrix resin skin at the outer wall of ultra high modulus polyethylene fibre winding layer.
The cross section of described ultra high modulus polyethylene fibre reinforced plastics bar is circular, and its diameter is 5-50mm.
Described matrix resin internal layer and matrix resin skin are all made by matrix resin.
The weight percentage of ultra high modulus polyethylene fibre is 50-80% in the described ultra high modulus polyethylene fibre reinforced plastics bar, and the weight percentage of matrix resin is 20-50%.
Described matrix resin by thermosetting resin and assistant by mass ratio 100:(0-27) be mixed and made into; Described thermosetting resin is in polyurethane resin, phenolic resins, epoxy resin, unsaturated polyester resin and the vinylite any; Described assistant is any or the two or more mixture wherein in curing agent, promoter, light trigger, releasing agent and the filler.
The fiber number of described ultra high modulus polyethylene fibre is 400-30000dtex, elastic modelling quantity 〉=1350cN/dtex.
Another object of the present invention is to provide a kind of preparation method of above-mentioned ultra high modulus polyethylene fibre reinforced plastics bar.
In order to reach above purpose, the technical solution adopted in the present invention is: the preparation method of this ultra high modulus polyethylene fibre reinforced plastics bar is characterized in that: it may further comprise the steps makes:
(1), the preparation matrix resin: with thermosetting resin and assistant by mass ratio 100:(0-27) fully stir and make it to mix, carry out vacuum defoamation again and remove wherein bubble, it is standby to make matrix resin; Described thermosetting resin is in polyurethane resin, phenolic resins, epoxy resin, unsaturated polyester resin and the vinylite any; Described assistant is any or the two or more mixture wherein in curing agent, promoter, light trigger, releasing agent and the filler;
(2), impregnation: adopt the tension force draw-gear will be placed in ultra high modulus polyethylene fibre on the creel, enter in the steeping vat that matrix resin is housed through row's yarn device, making outer wall, to be uniformly coated with the ultra high modulus polyethylene fibre of matrix resin standby;
(3), interior core preforming: the tubular preforming mould is sent in the ultra high modulus polyethylene fibre parallel longitudinal arrangement that many outer walls is uniformly coated with matrix resin, discharge unnecessary resin and bubble, typing becomes inner core, its cross section is circular, by the mutual extrusion effect between the ultra high modulus polyethylene fibre, will be formed into as a whole matrix resin internal layer, and the ultra high modulus polyethylene fibre vertically is arranged in the inside of matrix resin internal layer uniformly;
(4), winding, mould formed by extrusion and tension: the ultra high modulus polyethylene fibre that outer wall is uniformly coated with matrix resin is wrapped on the outer wall of inner core uniformly by wrapping machine, send into formed by extrusion and tension in the tubulose mould again, the temperature control of mould formed by extrusion and tension is at 90 ℃-150 ℃, will form ultra high modulus polyethylene fibre winding layer and matrix resin skin, ultra high modulus polyethylene fibre winding layer is coated on the outer wall of matrix resin internal layer, is coated with the matrix resin skin at the outer wall of ultra high modulus polyethylene fibre winding layer;
(5), curing molding: the composite behind the above-mentioned formed by extrusion and tension at curing molding under 80 ℃-140 ℃ the temperature or under ultraviolet ray irradiation, is obtained ultra high modulus polyethylene fibre reinforced plastics bar.
Beneficial effect of the present invention is: the present invention has simple in structure, and quality is slim and graceful, the intensity height, the modulus height, bending radius is little, and is counter-bending anti-folding, have very high mechanical strength and splendid pliability, can carry good characteristics such as bigger impulsive force and pulling force, can be used for building, ocean, mining, communication engineering and other industry, for example: cable strengthens, fishing line, fishing net, cable, the manufacturing of geonet aperture plate lattice cloth, fields such as concrete enhancing have good market prospects.
Description of drawings
Fig. 1 analyses and observe enlarged diagram for structure partial of the present invention;
Among the figure: 1, ultra high modulus polyethylene fibre; 2, matrix resin internal layer; 3, ultra high modulus polyethylene fibre winding layer; 4, matrix resin skin.
The specific embodiment
Below in conjunction with accompanying drawing 1 and specific embodiment, further set forth the present invention.
Embodiment 1:
The preparation method of ultra high modulus polyethylene fibre reinforced plastics bar may further comprise the steps and makes:
(1), preparation matrix resin: will be by 100 parts of epoxy resin, 15 parts of benzene dimethylamine curing agent, 2 parts of DMP-30 promoter, 2 parts of releasing agents and 8 parts of matrix resins that filler is formed, advanced fully to stir and make it to mix, carry out vacuum defoamation again and remove bubble in the matrix resin, standby;
(2), impregnation: the fiber number that adopts the tension force draw-gear will be placed on the creel is 400dtex, the ultra high modulus polyethylene fibre of stretch modulus 〉=1350cN/dtex, enter in the steeping vat that matrix resin is housed through row's yarn device, making outer wall, to be uniformly coated with the ultra high modulus polyethylene fibre of matrix resin standby;
(3), interior core preforming: the tubular preforming mould is sent in the ultra high modulus polyethylene fibre parallel longitudinal arrangement that many outer walls is uniformly coated with matrix resin, discharge unnecessary resin and bubble, typing becomes inner core, its cross section is circular, by the mutual extrusion effect between the ultra high modulus polyethylene fibre, will be formed into as a whole matrix resin internal layer 2, and ultra high modulus polyethylene fibre 1 vertically is arranged in the inside of matrix resin internal layer 2 uniformly;
(4), winding, mould formed by extrusion and tension: the ultra high modulus polyethylene fibre that outer wall is uniformly coated with matrix resin is wrapped on the outer wall of inner core uniformly by wrapping machine, send into formed by extrusion and tension in the tubulose mould again, the temperature control of mould formed by extrusion and tension is at 100 ℃, will form ultra high modulus polyethylene fibre winding layer 3 and matrix resin skin 4, ultra high modulus polyethylene fibre winding layer 3 is coated on the outer wall of matrix resin internal layer 2, is coated with matrix resin skin 4 at the outer wall of ultra high modulus polyethylene fibre winding layer 3;
(5), curing molding: with the curing molding under 90 ℃ temperature of the composite behind the formed by extrusion and tension, obtain ultra high modulus polyethylene fibre reinforced plastics bar.
The mass percent of matrix resin is 50% in the ultra high modulus polyethylene fibre reinforced plastics bar that above-mentioned steps makes, the diameter of ultra high modulus polyethylene fibre reinforced plastics bar is 5mm, can be used for cable, optical cable enhancing, the manufacturing field of fishing line, fishing net, cable and geonet grid, grid cloth.
Embodiment 2:
The preparation method of ultra high modulus polyethylene fibre reinforced plastics bar may further comprise the steps and makes:
(1), preparation matrix resin: the matrix resin that will be formed by 100 parts of vinylites, 3 parts of methyl ethyl ketone peroxides (MEKP) curing agent, 1.5 parts of catalyst (1% cobalt), advanced fully to stir and make it to mix, carry out vacuum defoamation again and remove bubble in the matrix resin, standby;
(2), impregnation: the fiber number that adopts the tension force draw-gear will be placed on the creel is 2000dtex, the ultra high modulus polyethylene fibre of stretch modulus 〉=1350cN/dtex, enter in the steeping vat that matrix resin is housed through row's yarn device, making outer wall, to be uniformly coated with the ultra high modulus polyethylene fibre of matrix resin standby;
(3), interior core preforming: the tubular preforming mould is sent in the ultra high modulus polyethylene fibre parallel longitudinal arrangement that many outer walls is uniformly coated with matrix resin, discharge unnecessary resin and bubble, typing becomes inner core, its cross section is circular, by the mutual extrusion effect between the ultra high modulus polyethylene fibre, will be formed into as a whole matrix resin internal layer 2, and ultra high modulus polyethylene fibre 1 vertically is arranged in the inside of matrix resin internal layer 2 uniformly;
(4), winding, mould formed by extrusion and tension: the ultra high modulus polyethylene fibre that outer wall is uniformly coated with matrix resin is wrapped on the outer wall of inner core uniformly by wrapping machine, send into formed by extrusion and tension in the tubulose mould again, the temperature control of mould formed by extrusion and tension is at 90 ℃, will form ultra high modulus polyethylene fibre winding layer 3 and matrix resin skin 4, ultra high modulus polyethylene fibre winding layer 3 is coated on the outer wall of matrix resin internal layer 2, is coated with matrix resin skin 4 at the outer wall of ultra high modulus polyethylene fibre winding layer 3;
(5), curing molding: with the curing molding under 80 ℃ temperature of the composite behind the formed by extrusion and tension, obtain ultra high modulus polyethylene fibre reinforced plastics bar.
The mass percent of matrix resin is 44% in the ultra high modulus polyethylene fibre reinforced plastics bar that above-mentioned steps makes, and ultra high modulus polyethylene fibre reinforced plastics shank diameter is 18mm, can be used for fields such as cable, geonet grid, grid cloth and concrete enhancing.
Embodiment 3:
The preparation method of ultra high modulus polyethylene fibre reinforced plastics bar may further comprise the steps and makes:
(1), preparation matrix resin: will be by 65 parts of PPGs, 100 parts of isocyanates or its modified resin, 1.5 parts of amines catalysts, 1 part of releasing agent, 15 parts of thermosetting polyurethane resins that filler is formed, advanced fully to stir and make it to mix, carry out vacuum defoamation again and remove bubble in the matrix resin, standby;
(2), impregnation: the fiber number that adopts the tension force draw-gear will be placed on the creel is 5000dtex, the ultra high modulus polyethylene fibre of stretch modulus 〉=1350 cN/dtex, enter in the steeping vat that matrix resin is housed through row's yarn device, making outer wall, to be uniformly coated with the ultra high modulus polyethylene fibre of matrix resin standby;
(3), interior core preforming: the tubular preforming mould is sent in the ultra high modulus polyethylene fibre parallel longitudinal arrangement that many outer walls is uniformly coated with matrix resin, discharge unnecessary resin and bubble, typing becomes inner core, its cross section is circular, by the mutual extrusion effect between the ultra high modulus polyethylene fibre, will be formed into as a whole matrix resin internal layer 2, and ultra high modulus polyethylene fibre 1 vertically is arranged in the inside of matrix resin internal layer 2 uniformly;
(4), winding, mould formed by extrusion and tension: the ultra high modulus polyethylene fibre that outer wall is uniformly coated with matrix resin is wrapped on the outer wall of inner core uniformly by wrapping machine, send into formed by extrusion and tension in the tubulose mould again, the temperature control of mould formed by extrusion and tension is at 110 ℃, will form ultra high modulus polyethylene fibre winding layer 3 and matrix resin skin 4, ultra high modulus polyethylene fibre winding layer 3 is coated on the outer wall of matrix resin internal layer 2, is coated with matrix resin skin 4 at the outer wall of ultra high modulus polyethylene fibre winding layer 3;
(5), curing molding: with the curing molding under 100 ℃ temperature of the composite behind the formed by extrusion and tension, obtain ultra high modulus polyethylene fibre reinforced plastics bar.
The mass percent of matrix resin is 38% in the ultra high modulus polyethylene fibre reinforced plastics bar that above-mentioned steps makes, and ultra high modulus polyethylene fibre reinforced plastics shank diameter is 25mm, can be used for fields such as cable, geonet grid, grid cloth and concrete enhancing.
Embodiment 4:
The preparation method of ultra high modulus polyethylene fibre reinforced plastics bar may further comprise the steps and makes:
(1), the preparation matrix resin: thermosetting phenolic resin fully stirred make it to mix, carry out vacuum defoamation again and remove bubble in the matrix resin, standby;
(2), impregnation: the fiber number that adopts the tension force draw-gear will be placed on the creel is 18000dtex, the ultra high modulus polyethylene fibre of stretch modulus 〉=1350cN/dtex, enter in the steeping vat that matrix resin is housed through row's yarn device, making outer wall, to be uniformly coated with the ultra high modulus polyethylene fibre of matrix resin standby;
(3), interior core preforming: the tubular preforming mould is sent in the ultra high modulus polyethylene fibre parallel longitudinal arrangement that many outer walls is uniformly coated with matrix resin, discharge unnecessary resin and bubble, typing becomes inner core, its cross section is circular, by the mutual extrusion effect between the ultra high modulus polyethylene fibre, will be formed into as a whole matrix resin internal layer 2, and ultra high modulus polyethylene fibre 1 vertically is arranged in the inside of matrix resin internal layer 2 uniformly;
(4), winding, mould formed by extrusion and tension: the ultra high modulus polyethylene fibre that outer wall is uniformly coated with matrix resin is wrapped on the outer wall of inner core uniformly by wrapping machine, send into formed by extrusion and tension in the tubulose mould again, the temperature control of mould formed by extrusion and tension is at 150 ℃, will form ultra high modulus polyethylene fibre winding layer 3 and matrix resin skin 4, ultra high modulus polyethylene fibre winding layer 3 is coated on the outer wall of matrix resin internal layer 2, is coated with matrix resin skin 4 at the outer wall of ultra high modulus polyethylene fibre winding layer 3;
(5), curing molding: with the curing molding under 140 ℃ temperature of the composite behind the formed by extrusion and tension, obtain ultra high modulus polyethylene fibre reinforced plastics bar.
The mass percent of matrix resin is 30% in the ultra high modulus polyethylene fibre reinforced plastics bar that above-mentioned steps makes, and ultra high modulus polyethylene fibre reinforced plastics shank diameter is 35mm, can be used for fields such as cable, geonet grid, grid cloth and concrete enhancing.
Embodiment 5:
The preparation method of ultra high modulus polyethylene fibre reinforced plastics bar may further comprise the steps and makes:
(1), the preparation matrix resin: 100 parts of photosensitive unsaturated polyester resins and 5 parts of diphenyl ketone photo initiators fully stirred make it to mix, carry out vacuum defoamation again and remove bubble in the matrix resin, standby;
(2), impregnation: the fiber number that adopts the tension force draw-gear will be placed on the creel is 30000dtex, the ultra high modulus polyethylene fibre of stretch modulus 〉=1350cN/dtex, enter in the steeping vat that matrix resin is housed through row's yarn device, making outer wall, to be uniformly coated with the ultra high modulus polyethylene fibre of matrix resin standby;
(3), interior core preforming: the tubular preforming mould is sent in the ultra high modulus polyethylene fibre parallel longitudinal arrangement that many outer walls is uniformly coated with matrix resin, discharge unnecessary resin and bubble, typing becomes inner core, its cross section is circular, by the mutual extrusion effect between the ultra high modulus polyethylene fibre, will be formed into as a whole matrix resin internal layer 2, and ultra high modulus polyethylene fibre 1 vertically is arranged in the inside of matrix resin internal layer 2 uniformly;
(4), winding, mould formed by extrusion and tension: the ultra high modulus polyethylene fibre that outer wall is uniformly coated with matrix resin is wrapped on the outer wall of inner core uniformly by wrapping machine, send into formed by extrusion and tension in the tubulose mould again, will form ultra high modulus polyethylene fibre winding layer 3 and matrix resin skin 4, ultra high modulus polyethylene fibre winding layer 3 is coated on the outer wall of matrix resin internal layer 2, is coated with matrix resin skin 4 at the outer wall of ultra high modulus polyethylene fibre winding layer 3;
(5), curing molding: with the curing molding under the ultraviolet ray irradiation of the composite behind the formed by extrusion and tension, obtain ultra high modulus polyethylene fibre reinforced plastics bar.
The mass percent of matrix resin is 20% in the ultra high modulus polyethylene fibre reinforced plastics bar that above-mentioned steps makes, and ultra high modulus polyethylene fibre reinforced plastics shank diameter is 50mm, is mainly used in concrete and strengthens the field.
Claims (7)
1. ultra high modulus polyethylene fibre reinforced plastics bar, it is characterized in that: the ultra high modulus polyethylene fibre (1) that is provided with vertical arrangement in the inside of matrix resin internal layer (2), ultra high modulus polyethylene fibre winding layer (3) is coated on the outer wall of matrix resin internal layer (2), is coated with matrix resin skin (4) at the outer wall of ultra high modulus polyethylene fibre winding layer (3).
2. ultra high modulus polyethylene fibre reinforced plastics bar according to claim 1 is characterized in that: the cross section of described ultra high modulus polyethylene fibre reinforced plastics bar is for circular, and its diameter is 5-50mm.
3. ultra high modulus polyethylene fibre reinforced plastics bar according to claim 1, it is characterized in that: described matrix resin internal layer (2) and matrix resin skin (4) are all made by matrix resin.
4. ultra high modulus polyethylene fibre reinforced plastics bar according to claim 1, it is characterized in that: the weight percentage of ultra high modulus polyethylene fibre is 50-80% in the described ultra high modulus polyethylene fibre reinforced plastics bar, and the weight percentage of matrix resin is 20-50%.
5. ultra high modulus polyethylene fibre reinforced plastics bar according to claim 3 is characterized in that: described matrix resin by thermosetting resin and assistant by mass ratio 100:(0-27) be mixed and made into; Described thermosetting resin is in polyurethane resin, phenolic resins, epoxy resin, unsaturated polyester resin and the vinylite any; Described assistant is any or the two or more mixture wherein in curing agent, promoter, light trigger, releasing agent and the filler.
6. ultra high modulus polyethylene fibre reinforced plastics bar according to claim 1, it is characterized in that: the fiber number of described ultra high modulus polyethylene fibre (1) is 400-30000dtex, elastic modelling quantity 〉=1350cN/dtex.
7. the preparation method of ultra high modulus polyethylene fibre reinforced plastics bar, it is characterized in that: it may further comprise the steps makes:
(1), the preparation matrix resin: with thermosetting resin and assistant by mass ratio 100:(0-27) fully stir and make it to mix, carry out vacuum defoamation again and remove wherein bubble, it is standby to make matrix resin; Described thermosetting resin is in polyurethane resin, phenolic resins, epoxy resin, unsaturated polyester resin and the vinylite any; Described assistant is any or the two or more mixture wherein in curing agent, promoter, light trigger, releasing agent and the filler;
(2), impregnation: adopt the tension force draw-gear will be placed in ultra high modulus polyethylene fibre on the creel, enter in the steeping vat that matrix resin is housed through row's yarn device, making outer wall, to be uniformly coated with the ultra high modulus polyethylene fibre of matrix resin standby;
(3), interior core preforming: the tubular preforming mould is sent in the ultra high modulus polyethylene fibre parallel longitudinal arrangement that many outer walls is uniformly coated with matrix resin, discharge unnecessary resin and bubble, typing becomes inner core, its cross section is circular, by the mutual extrusion effect between the ultra high modulus polyethylene fibre, will be formed into as a whole matrix resin internal layer, and the ultra high modulus polyethylene fibre vertically is arranged in the inside of matrix resin internal layer uniformly;
(4), winding, mould formed by extrusion and tension: the ultra high modulus polyethylene fibre that outer wall is uniformly coated with matrix resin is wrapped on the outer wall of inner core uniformly by wrapping machine, send into formed by extrusion and tension in the tubulose mould again, the temperature control of mould formed by extrusion and tension is at 90 ℃-150 ℃, will form ultra high modulus polyethylene fibre winding layer and matrix resin skin, ultra high modulus polyethylene fibre winding layer is coated on the outer wall of matrix resin internal layer, is coated with the matrix resin skin at the outer wall of ultra high modulus polyethylene fibre winding layer;
(5), curing molding: the composite behind the above-mentioned formed by extrusion and tension at curing molding under 80 ℃-140 ℃ the temperature or under ultraviolet ray irradiation, is obtained ultra high modulus polyethylene fibre reinforced plastics bar.
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| CN109514754A (en) * | 2018-12-04 | 2019-03-26 | 中国航空工业集团公司西安飞机设计研究所 | A kind of variation rigidity composite plys of continuous fiber |
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Application publication date: 20130918 |