CN111303650B - Special material for automobile engine hood produced by utilizing recycled fishing net wire - Google Patents
Special material for automobile engine hood produced by utilizing recycled fishing net wire Download PDFInfo
- Publication number
- CN111303650B CN111303650B CN202010105580.6A CN202010105580A CN111303650B CN 111303650 B CN111303650 B CN 111303650B CN 202010105580 A CN202010105580 A CN 202010105580A CN 111303650 B CN111303650 B CN 111303650B
- Authority
- CN
- China
- Prior art keywords
- fishing net
- glass fiber
- raw materials
- regenerated
- engine hood
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a special material for an automobile engine hood produced by using recycled fishing net wires, which is prepared from the following raw materials: the following raw materials in percentage by weight: 25-45% of regenerated fishing net wires; 19-39% of polycaprolactam resin; 25-35% of glass fiber; 1-5% of glass fiber exposure preventing agent; 2-6% of a compatilizer; 0.1-1% of a coupling agent; 0.2-1% of a heat stabilizer; 0.2-1% of antioxidant; 0.2-3% of a lubricant; 1-3% of black color master batch. The special material for the automobile engine hood, which is produced by utilizing the recycled fishing net wire, not only can meet various requirements of the working condition of the automobile engine hood, but also widens the field of recycling the polycaprolactam of the fishing net wire, reduces resource waste and environmental pollution, reduces the material cost, ensures that the product has higher competitiveness, and creates huge economic benefit for enterprises and society.
Description
Technical Field
The invention relates to the technical field of material recycling, in particular to a recycling method of waste fishing net wires.
Background
The engine cover is used for being arranged on an automobile engine and an ignition coil and plays roles of protecting, reducing noise, insulating sound and decorating, and certain automobile engine decorating covers also have the role of part of oil-gas treatment circulation. This requires materials for their production which have high strength, high heat resistance, high dimensional stability and low warpage, good coatability, good weathering resistance and excellent weldability. The strength of the material, including impact strength and bending strength, not only guarantees the durability to vibration and external force, but also because the part is welded together in a vibration friction welding mode of the upper cover and the lower cover, the higher the strength of the material is, the better the welding performance is, and the more difficult the inner cavity of the part is to be deformed, air leakage and burst under the action of air pressure in a normal working state; regarding heat resistance, the material of the engine peripheral parts is required to have long-term heat resistance, the ambient temperature of the engine compartment is about 80 ℃ for a long time, and the long-term working temperature of the engine can be as high as 150 ℃ or higher. The reinforced polycaprolactam material is required to have poor heat resistance, and other properties are required to be kept not to be reduced under a high-temperature environment for a long time, otherwise, the product is scrapped; regarding the welding performance, because engine oil gas is when passing through bonnet (ignition coil), the maximum atmospheric pressure of bonnet inner chamber is 0.3 Mpa under normal operating condition, if take place abnormal conditions then can be greater than 0.3 Mpa, when designing the bonnet, need ask that the burst pressure be greater than or equal to 0.4Mpa can guarantee that the product is unlikely to take place the damage and influence the safety in utilization.
At present, no report related to the production of automobile engine covers by utilizing recycled fishing net wires for reinforcement and modification is seen in China. The main reason is that the properties of the recovered polycaprolactam material such as strength and heat resistance are relatively poor, and particularly, the welding property can not meet the requirement that the bursting pressure is more than or equal to 0.4Mpa, so that the performance requirement of the special material for preparing the engine hood can not be met.
Disclosure of Invention
The invention provides a method for producing a special material for an automobile engine hood by utilizing recovered fishing net wires, which can overcome the defects of the performance of the recovered fishing net wire polycaprolactam material, so that the method can be used for producing the special material for the automobile engine hood.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the raw materials in percentage by weight are as follows:
30-55% of regenerated fishing net wires;
15-25% of polycaprolactam resin;
25 to 35 percent of glass fiber;
2-5% of glass fiber exposure preventing agent;
2-6% of a compatilizer;
0.5-1% of a coupling agent;
0.3-1% of a heat stabilizer;
0.2-1% of antioxidant;
0.2-3% of a lubricant;
1-3% of black color master batch.
In the above technical solution, a more specific technical solution may also be: the regenerated fishing net wire is a regenerated plastic particle formed by cleaning, extruding and granulating the recovered fishing net wire which is not drained or is drained with fresh water.
Further, the relative viscosity of the polycaprolactam resin is 2.8 or more.
Further, the glass fiber was an alkali-free twistless roving having a monofilament diameter of 14 μm treated with a silane-based sizing agent.
Further, the glass fiber dewing prevention agent is a mixture of silicone powder and modified ethylene bis fatty acid amide in a mass ratio of 4: 3.
Further, the compatilizer is polypropylene grafted maleic anhydride with the grafting rate of 0.8% -1.5%.
Further, the heat stabilizer is a mixture of cuprous halide and potassium halide.
Further, the antioxidant is prepared from the following components in a mass ratio of 1: 1 and a phosphite ester antioxidant.
Further, the black color master batch is a color master batch containing 50% of carbon black.
Further, the preparation method comprises the following steps:
A. drying the regenerated fishing net filaments and the polycaprolactam resin in the raw materials for 4 hours at 120 ℃ for later use;
B. putting the glass fiber exposure preventing agent, the compatilizer, the coupling agent, the antioxidant, the lubricant, the black color master batch, the regenerated fishing net silk treated in the step A and the polycaprolactam resin into a high-speed mixer according to the proportion of the raw materials, and mixing for 5-10 min;
C. b, adding the mixture obtained in the step B from the main feed of a double-screw extruder, adding the glass fibers in the raw materials from a side feed inlet of the double-screw extruder according to the proportion of the raw materials, and performing extrusion plasticization under the conditions that the screw temperature of the double-screw extruder is 240-275 ℃, the rotating speed of a main machine screw is 350-450 r/min, and the frequency of the feed machine is 11-15 Hz to obtain the composite material;
D. and cooling, drying, granulating and homogenizing the obtained semi-finished product.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. the special material for the automobile engine hood, which is produced by utilizing the recycled fishing net wire, not only can meet various requirements (such as heat resistance, coatability, high strength and welding bursting pressure) of the working condition of the automobile engine hood, but also widens the field of recycling the polycaprolactam of the fishing net wire, reduces resource waste and environmental pollution, reduces the material cost, ensures that the product has higher competitiveness and creates huge economic benefits for enterprises and society.
2. The invention utilizes the recovered fishing net silk and polycaprolactam resin to compound, thereby improving the comprehensive performance of the material; the comprehensive performance of the engine hood is greatly reduced by using the regenerated fishing net wire for multiple processing, and the performance of the engine hood is difficult to improve even adding the auxiliary agent in the later period, so that the engine hood cannot be met by using the regenerated fishing net wire as the base material without adding polycaprolactam resin as one of the base materials.
3. The invention selects the fishing net wire without water, has less impurities, does not have serious aging degradation degree of the raw materials, has better performances in all aspects and higher retention rate; the fishing net silk of water under, because the corrosive action of water, the molecular chain of nylon can suffer the destruction of different degree, takes place partial degradation, even the raw materials performance accords with the standard, and the processability also can receive very big influence, and the requirement is also difficult satisfied to the burst pressure after the welding.
4. According to the invention, the silane-based impregnating compound is coated to treat the glass fiber, so that the glass fiber has good dispersibility and fluidity and good solubility with nylon resin, the glass fiber is coated and fused by nylon, the compatibility of the glass fiber and PA6 is increased, the impact strength and modulus of a material system can be obviously improved, and the dimensional stability and mechanical strength of a product are ensured; furthermore, the diameter of 14 microns is selected because the glass fiber with a too small diameter is easily sheared into too small fibers by the screw; the absence of a length-diameter ratio greatly reduces the reinforcing effect of the glass fibers; too large a diameter of the glass fiber affects the adhesion and compatibility with the substrate, and also causes a loss of mechanical properties.
5. According to the invention, the mixture of the silicone powder and the modified ethylene bis fatty acid amide in a mass ratio of 4: 3 is selected as the glass fiber anti-exposure agent, so that the bonding state of glass fibers and nylon is improved; the thickness of the mechanical action layer between the surface of the glass fiber and the nylon is increased, so that the matrix near the surface of the glass fiber is easier to generate shear yield, the absorption and dissipation effects on impact energy are increased, and the reinforcing and toughening effects of the glass fiber on the matrix nylon are promoted; the glass fiber is well coated in the nylon, so that the glass fiber and the nylon synchronously flow in the processing process, the glass fiber is not easy to tear, the processing performance of the material is improved, compared with the single glass fiber exposure preventing agent, the problems of fiber floating, fiber exposure, white stubbles, flow marks and the like of the glass fiber reinforced modified nylon can be reduced, and the appearance requirement of the product and the printing requirement of the product can be better met.
6. The invention selects the mixture of cuprous halide and potassium halide as the heat stabilizer, and utilizes the synergistic effect of the cuprous halide and the potassium halide, so that the heat-resistant stability of the material is better than that of a single material under the condition of the same dosage.
7. The black master batch containing 50% of carbon black is selected, the black master batch mainly plays a role in weather resistance and coloring, the higher the content of the carbon black is, the better the coloring effect of the master batch is, but the more difficult the dispersion is, and the comprehensive performance of a system is influenced; and the content of the carbon black is low, the addition amount is large, the coloring effect is poor, and the weather resistance can not meet the requirement.
Detailed Description
The present invention is further described in detail below with reference to examples;
the following table 1 shows the raw material weight percentage composition of examples 1 to 3 and comparative examples 1 to 6, and table 2 shows the performance parameters of the products obtained in examples 1 to 3 and comparative examples 1 to 6;
the regenerated fishing net yarns mentioned in table 1 are regenerated plastic particles formed by cleaning, extruding and granulating recovered fishing net yarns which are not drained or have fresh water, the relative viscosity of the polycaprolactam resin is more than 2.8, the glass fibers are alkali-free untwisted roving with the monofilament diameter of 14 microns and treated by coating a silane-based wetting agent, the glass fiber dewing prevention agent is a mixture of silicone powder and modified ethylene bis fatty acid amide with the mass ratio of 4: 3, the compatilizer is polypropylene grafted maleic anhydride with the grafting ratio of 0.8% -1.5%, the heat stabilizer is a mixture of cuprous halide and potassium halide, and the antioxidant is prepared from the following components in a mass ratio of 1: 1, and the black color master batch is a color master batch containing 50% of carbon black.
Table 1 gives the raw material compositions of examples 1 to 3 and comparative examples 1 to 6 prepared by the following steps:
A. drying the regenerated fishing net filaments and the polycaprolactam resin in the raw materials for 4 hours at 120 ℃ for later use;
B. mixing the glass fiber exposure preventing agent, the compatilizer, the coupling agent, the antioxidant, the lubricant, the black color masterbatch, the regenerated fishing net silk treated in the step A and the polycaprolactam resin in a high-speed mixer according to the proportion of the raw materials for 5-10 min;
C. b, adding the mixture obtained in the step B from the main feed of a double-screw extruder, adding the glass fibers in the raw materials from a side feed inlet of the double-screw extruder according to the proportion of the raw materials, and performing extrusion plasticization under the conditions that the screw temperature of the double-screw extruder is 240-275 ℃, the rotating speed of a main machine screw is 350-450 r/min, and the frequency of the feed machine is 11-15 Hz to obtain the composite material;
D. and cooling, drying, granulating and homogenizing the obtained semi-finished product.
TABLE 1
TABLE 2
In the above tables 1 and 2, it can be found that, by using examples 1, 2 and 3 and comparative examples 1, 2, 3 and 4, the material is difficult to meet the requirements of the working conditions of the product if the glass fiber exposure inhibitor, the compatibilizer and the heat stabilizer are added. The printing performance is better and the surface smoothness is higher when the glass fiber exposure preventing agent is added than when the printing ink is not added. The glass fiber exposure preventing agent can obviously improve the dispersion of glass fibers, improve the processing fluidity of the material and improve the surface smoothness of a product; the comprehensive performance of the material added with the compatilizer and the material without the compatilizer is more excellent, and the welding performance is better. This is because the addition of the compatibilizer increases the adhesion between the components, forming a stable structure that makes the dispersed and continuous phases more uniform. The heat stabilizer is added and the heat stability is not added, so that the heat resistance is higher, the heat stability is better, and the physical properties are reduced less under the high-temperature condition for a long time. Through the examples 1, 2 and 3, the comparative examples 5 and 6, it can be found that the engine hood requirements are difficult to meet by only using the regenerated fishing net wire as a base without adding the polycaprolactam resin base, because the performance is greatly reduced by only using the regenerated fishing net wire for repeated processing for a plurality of times, and the performance is difficult to improve by adding the auxiliary agent in the later period.
Claims (1)
1. A special material for an automobile engine hood produced by utilizing recycled fishing net wires is characterized by adopting the following raw materials in percentage by weight:
30-55% of regenerated fishing net wires;
15-25% of polycaprolactam resin;
25 to 35 percent of glass fiber;
2-5% of glass fiber exposure preventing agent;
2-6% of a compatilizer;
0.5-1% of a coupling agent;
0.3-1% of a heat stabilizer;
0.2-1% of antioxidant;
0.2-3% of a lubricant;
1-3% of black color master batch;
the sum of the weight percentages of the raw materials is 100 percent;
wherein the relative viscosity of the polycaprolactam resin is 2.8 or more;
the glass fiber is alkali-free twistless roving with the monofilament diameter of 14 microns, which is treated by a silane-based impregnating compound;
the regenerated fishing net wire is regenerated plastic particles formed by cleaning, extruding and granulating the recovered fishing net wire without water;
the glass fiber dewing-proof agent is a mixture of silicone powder and modified ethylene bis fatty acid amide in a mass ratio of 4: 3;
the compatilizer is polypropylene grafted maleic anhydride with the grafting rate of 0.8-1.5%;
the heat stabilizer is a mixture of cuprous halide and potassium halide;
the antioxidant is prepared from the following components in percentage by mass of 1: 1, compounding the hindered phenol antioxidant and phosphite ester antioxidant;
the black color master batch is a color master batch containing 50% of carbon black;
the preparation method comprises the following steps:
A. drying the regenerated fishing net filaments and the polycaprolactam resin in the raw materials for 4 hours at 120 ℃ for later use;
B. putting the glass fiber exposure preventing agent, the compatilizer, the coupling agent, the antioxidant, the lubricant, the black color master batch, the regenerated fishing net silk treated in the step A and the polycaprolactam resin into a high-speed mixer according to the proportion of the raw materials, and mixing for 5-10 min;
C. b, putting the mixture obtained in the step B from a main feeding port of a double-screw extruder, adding the glass fibers in the raw materials from a side feeding port of the double-screw extruder according to the proportion of the raw materials, and performing extrusion plasticization under the conditions that the screw temperature of the double-screw extruder is 240-275 ℃, the rotating speed of a main machine screw is 350-450 r/min, and the frequency of the feeding machine is 11-15 Hz to obtain the glass fiber reinforced plastic composite material;
D. and cooling, drying, granulating and homogenizing the obtained semi-finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010105580.6A CN111303650B (en) | 2020-02-21 | 2020-02-21 | Special material for automobile engine hood produced by utilizing recycled fishing net wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010105580.6A CN111303650B (en) | 2020-02-21 | 2020-02-21 | Special material for automobile engine hood produced by utilizing recycled fishing net wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111303650A CN111303650A (en) | 2020-06-19 |
| CN111303650B true CN111303650B (en) | 2022-05-10 |
Family
ID=71156715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010105580.6A Active CN111303650B (en) | 2020-02-21 | 2020-02-21 | Special material for automobile engine hood produced by utilizing recycled fishing net wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111303650B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114479444B (en) * | 2022-02-21 | 2024-03-26 | 广西鑫深科技有限公司 | Special material for automobile cylinder head cover produced by using regenerated PA66 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885914A (en) * | 2010-07-13 | 2010-11-17 | 东莞市意普万工程塑料有限公司 | Composite material special for automobile engine oil pan and preparation method thereof |
| CN101914288A (en) * | 2010-08-30 | 2010-12-15 | 南京聚隆科技股份有限公司 | Nylon 6 mineral fiber composite material for automobile engine cover lid and preparation method thereof |
| CN103289386A (en) * | 2013-05-09 | 2013-09-11 | 东莞市意普万尼龙科技股份有限公司 | Special nylon 66 composition for automobile engine hood and preparation method thereof |
| CN110000951A (en) * | 2019-04-22 | 2019-07-12 | 连云港永泰塑业有限公司 | A kind of device and method of waste and old fishing net preparation regeneration particle |
-
2020
- 2020-02-21 CN CN202010105580.6A patent/CN111303650B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885914A (en) * | 2010-07-13 | 2010-11-17 | 东莞市意普万工程塑料有限公司 | Composite material special for automobile engine oil pan and preparation method thereof |
| CN101914288A (en) * | 2010-08-30 | 2010-12-15 | 南京聚隆科技股份有限公司 | Nylon 6 mineral fiber composite material for automobile engine cover lid and preparation method thereof |
| CN103289386A (en) * | 2013-05-09 | 2013-09-11 | 东莞市意普万尼龙科技股份有限公司 | Special nylon 66 composition for automobile engine hood and preparation method thereof |
| CN110000951A (en) * | 2019-04-22 | 2019-07-12 | 连云港永泰塑业有限公司 | A kind of device and method of waste and old fishing net preparation regeneration particle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111303650A (en) | 2020-06-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103408915B (en) | A kind of high rigidity polycarbonate composite material and preparation method thereof | |
| CN109438975B (en) | High-strength nylon composite material and preparation method thereof | |
| CN113583396B (en) | PBT composition resistant to cyclic injection molding, preparation method and product thereof | |
| CN108164821B (en) | Long glass fiber reinforced polypropylene composite material with high fluidity, high apparent property and low VOC (volatile organic compounds) and preparation method thereof | |
| CN106751804A (en) | A kind of high-performance composite materials as prepared by recovery waste carpet PA66 materials and preparation method thereof | |
| CN114507395B (en) | Corrosion-resistant glass fiber reinforced polypropylene material and preparation method thereof | |
| CN113817270A (en) | Polypropylene composite material and preparation method thereof | |
| CN111303650B (en) | Special material for automobile engine hood produced by utilizing recycled fishing net wire | |
| CN114045043B (en) | High-impact wood-plastic helmet composite material and preparation method thereof | |
| CN106751761A (en) | High rigidity high glaze carbon fiber reinforced polyamide composite material and preparation method thereof | |
| CN110628212A (en) | Long carbon fiber reinforced nylon composite material with low carbon fiber content, low warpage and high strength and preparation method thereof | |
| CN114479444A (en) | Special material for automobile cylinder head cover produced by using regenerated PA66 | |
| CN107325549B (en) | Yellowing-resistant reinforced nylon 66 material and preparation method thereof | |
| CN110423461B (en) | Low-water-absorption flame-retardant glass fiber reinforced PA6 composite material and preparation method thereof | |
| CN112708209A (en) | Lightweight high-strength glass fiber reinforced polypropylene composite material and preparation method thereof | |
| CN112029260B (en) | Fibrilia-reinforced PC/ABS composite material, and preparation method and application thereof | |
| CN113897038A (en) | High-heat-resistance PBT composition and preparation method and application thereof | |
| CN113603979A (en) | Weather-resistant polyvinyl chloride pipe and preparation method thereof | |
| CN111690205A (en) | Novel flame-retardant modified plastic and production process thereof | |
| CN114957973B (en) | Automobile water chamber material and preparation method thereof | |
| CN111849116A (en) | High-strength plastic and processing technology thereof | |
| KR101664371B1 (en) | Polyamide based polymer compositions having high flowability and mechanical strength and polyamide based composite comprising the same | |
| CN114989600B (en) | Halogen-free flame-retardant nylon material capable of replacing PC molding highlight and scratch-resistant panel | |
| CN116376277B (en) | Nylon 612 composite material with improved rigidity and preparation method and application thereof | |
| CN103951875A (en) | Flame retardant polypropylene modified resin and its preparation technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |