CN105646984A - Antibacterial polyethylene foam and preparation method thereof - Google Patents
Antibacterial polyethylene foam and preparation method thereof Download PDFInfo
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- CN105646984A CN105646984A CN201610056632.9A CN201610056632A CN105646984A CN 105646984 A CN105646984 A CN 105646984A CN 201610056632 A CN201610056632 A CN 201610056632A CN 105646984 A CN105646984 A CN 105646984A
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- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
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- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
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- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
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- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
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- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
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- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/18—Binary blends of expanding agents
- C08J2203/182—Binary blends of expanding agents of physical blowing agents, e.g. acetone and butane
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- C08J2205/00—Foams characterised by their properties
- C08J2205/04—Foams characterised by their properties characterised by the foam pores
- C08J2205/042—Nanopores, i.e. the average diameter being smaller than 0,1 micrometer
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- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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Abstract
The invention relates to antibacterial polyethylene foam, and further relates to a preparation method of the antibacterial polyethylene foam. The antibacterial polyethylene foam is prepared from 65-80% of polyethylene resin, 0.5-4% of inorganic nanometer antibacterial agent, 7-20% of foaming agent, 3-9% of foaming-assisting anti-shrinking agent and 0.5-2% of inorganic material nucleating agent containing pores. Nanometer zinc oxide or nanometer copper oxide is selected as the antibacterial agent of the antibacterial polyethylene foam, and the aim of long-acting bacteriostasis is achieved through the slow-release effect of inorganic materials containing pores. According to the preparation method, the foaming-assisting anti-shrinking agent is used as a dispersing agent of the inorganic nanometer antibacterial agent, ground into a nanometer material on a constant-temperature grinding machine, evenly dispersed and then injected on a machining device through a metering pump in the hot melting state, the problems that nanometer materials are difficult to disperse and particles are aggregated are well solved, the antibacterial polyethylene foam is excellent in antibacterial performance and dense and uniform in bubble, and the breaking tensile strength and the elongation at break are obviously improved.
Description
Technical field
The present invention relates to a kind of antibacterial polyethylene foam, further relate to its preparation method.
Background technology
Polyethylene (PE), as the bulk product of petrochemical industry, has wide material sources, with low cost, widely used feature. Using the polyethylene bubble that polyethylene (PE) and foaming agent produce is hole-closing structure product, also known as EPE pearl wool, is the packaging material of a kind of novel environment friendly. The plurality of advantages such as product has that water proof is moistureproof, shockproof, sound insulation, insulation, plasticity is good, toughness is strong, reconstituted circularly, environmental protection, crashworthiness power are strong. It it is the desirable substitute of tradition shock-resistant packaging material. Meet the national industrial policies of plastic product minimizing especially. It is widely used in the packaging of the multiple products such as the high-grade frangible gift wrap such as automobile cushion, cushion, electronic apparatus, instrument and meter, computer, sound equipment, medical apparatus and instruments, industry control cabinet, hardware and lamp decoration, artware, glass, pottery, household electrical appliances, spraying, furniture family property, drinks and resin, hardware, toy, melon and fruit, the inner packing of leather shoes, article of everyday use and express delivery packaging.
Traditional polyethylene bubble does not have the function of antibacterial and mouldproof. For this, this area research staff have developed the various polyethylene bubble with antibacterial functions in recent years, as China Patent Publication No. CN1401695A antibacterial moldproof polyethylene steeps plastics, it is interpolation antibacterial and mouldproof masterbatch in polyvinyl resin, butane, monoglyceride, Pulvis Talci, utilizes extruder the sizing of direct for raw material extrusion foaming to be prepared. China Patent Publication No. CN102286176A antibacterial polypropylene foaming plastic and preparation method thereof, described content mix homogeneously is pressed at interior each component by matrix resin, complex antimicrobials and CBA, nucleator, antioxidant, dispersant, after melt blending pelletize, in moulding press, foaming prepares, and complex antimicrobials therein is water-soluble silicate. China Patent Publication No. 101967244A anti-bacterial polythene foamed plastics and preparation method thereof, being prepared from through melt blending and moulded from foam by matrix material, silver plated fiber, cross-linking agent, foaming agent and blowing promotor, described matrix material is polyethylene and two kinds of polymer of ethylene-vinyl acetate copolymer.
There is the problems such as antibacterial effect effect duration not good, antibacterial is short in above-mentioned antibacterial polypropylene foaming plastic antibacterial effect.
Summary of the invention
The technical problem to be solved is to provide a kind of antibacterial polyethylene bubble, the antibacterial and antimildew function that gained polyethylene bubble tool is extremely strong. This polyethylene contains inorganic nano antiseptic, and is reached the purpose of long-acting bacteriostatic by the slow releasing function of the inorganic material containing micropore, can be widely used in the antibiotic mold proof product field such as antibiotic plastic product, food fresh keeping packaging product.
The preparation method that another technical problem to be solved by this invention is to provide this antibacterial polyethylene foam, the method uses the dispersant helping foaming antishrinking agent as inorganic nano antiseptic, constant temperature grinder is ground to nano material and is uniformly dispersed, then inject on process equipment with dosing pump again under hot melt state, solve that nano material dispersion is difficult, the problem of particle agglomeration well, obtain be that a kind of anti-microbial property is excellent, fracture tensile strength and elongation at break properties significantly improves, the fine and closely woven uniform polyethylene bubble of abscess.
The technical problem to be solved is achieved by the following technical programs:
A kind of antibacterial polyethylene bubble, is made up of the component of following mass percent: polyvinyl resin 65��80%, inorganic nano antiseptic 0.5��4%, foaming agent 7��20%, help foaming antishrinking agent 3��9%, inorganic material nucleator 0.5��2% containing micropore.
Preferably, the melt index of described polyethylene be every 10 minutes 1��3 gram.
Preferably, described inorganic nano antiseptic is at least one of nano zine oxide, nano cupric oxide.
Preferably, described foaming agent is at least one of butane, dimethyl ether.
Preferably, at least one helping foaming antishrinking agent to be glyceryl monostearate, Tissuemat E, OPE, EVA wax described in.
Preferably, the described at least one that inorganic material nucleator is Pulvis Talci, calcium carbonate crystal whisker, calcium sulfate crystal whiskers and silicon carbide whisker containing micropore.
Preferably, above-mentioned antibacterial polyethylene bubble is grouped into by the one-tenth of following percentage by weight: polyvinyl resin 68��78%, inorganic nano antiseptic 1��3%, foaming agent 12��18%, help foaming antishrinking agent 4��8%, inorganic material nucleator 0.8��1.5% containing micropore.
Preferably, above-mentioned antibacterial polyethylene bubble is grouped into by the one-tenth of following percentage by weight: polyvinyl resin 75%, inorganic nano antiseptic 2%, foaming agent 15%, help foaming antishrinking agent 7%, inorganic material nucleator 1% containing micropore.
The preparation method of above-mentioned antibacterial polyethylene bubble by step is:
(1) foaming antishrinking agent will be helped to be heated to 70��100 DEG C of grinding distribution agent as inorganic nano antiseptic, on thermostatic type grinder, inorganic nano antiseptic is ground with inorganic nano antiseptic in proportion and within 1��3 hour, form the nano material that particle diameter is 20��100nm, obtain containing the antibacterial plastic concentrate helping foaming antishrinking agent;
(2) by under the polyvinyl resin of a part, the inorganic material nucleator room temperature in a mixer containing micropore blended 15��30 minutes;
(3) extruded at 140��160 DEG C by the blend double screw extruder that step (2) obtains, pelletizing obtains functional master batch;
(4) functional master batch that step (3) is obtained by a certain percentage with step (2) remaining polyvinyl resin blended 15��30 minutes in a mixer;
(5) what step (1) obtained is heated to 70��100 DEG C in order to being injected in the extruder of next step by a certain percentage containing the antibacterial plastic concentrate helping foaming antishrinking agent in the storage cylinder help foaming antishrinking agent dosing pump;
(6) blend step (4) obtained is with carrying out extrusion operation with foaming agent injection pump and with injecting containing the antibacterial plastic concentrate helping foaming antishrinking agent to heat in the separate unit screw extruder of dosing pump and inlet to 140��160 DEG C, separately foaming agent injection pump is injected from extruder blowing agent injection port, what step (5) obtained quantitatively injects in helping foaming antishrinking agent dosing pump containing the antibacterial plastic concentrate helping foaming antishrinking agent simultaneously, and extrusion obtains polyethylene bubble sheet material.
Preferably, step (1) and (5) heating-up temperature are 80 DEG C, and milling time is 2 hours, and the particle diameter of gained nano material is 53nm; Step (2) and (4) blended time are 20min; Step (6) heating-up temperature is 150 DEG C.
There is advantages that
The present invention uses inorganic nano antiseptic (nano zine oxide, nano cupric oxide) as antimicrobial component, nano zine oxide, copper oxide is particle diameter granule between 1��100nm, there is granule little, the speciality such as specific surface area is big, these speciality make it present and are different from common micro zinc oxide, the premium properties of micron copper oxide, they are easier to discharge metal ion, utilize the antibacterial ability of metal ion, and the purpose of long-acting bacteriostatic is reached by the slow releasing function containing microporous inorganic material, rubber product can be widely used in, plastic product, food packaging items, cosmetics and medicine and other fields.
In the preparation method of antibacterial polyethylene foam of the present invention, adopt and component helping foaming antishrinking agent as the grinding distribution agent of inorganic nano antiseptic, first undertaken inorganic nano antiseptic disperseing again with other component melts extrusion molding, overcome that nano material dispersion is difficult, the problem of particle agglomeration, obtain be that a kind of anti-microbial property is excellent, fracture tensile strength and elongation at break properties significantly improves, the fine and closely woven uniform polyethylene bubble of abscess.
Accompanying drawing explanation
Fig. 1 is 50000 times of pictures of nano zine oxide of the German ZEISSEVO18 type scanning electron microscope of embodiment 1 antibacterial polyethylene foam.
The LA960WET particle size analyzer that Fig. 2 is embodiment 1 antibacterial polyethylene foam records the equal footpath 53.2nm of nano zine oxide and scattergram.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention will be described in detail.
Embodiment 1
A kind of antibacterial polyethylene bubble, is grouped into by the one-tenth of following percentage by weight: polyvinyl resin 75%, inorganic nano antiseptic 1%, foaming agent 16%, help foaming antishrinking agent 7%, inorganic material nucleator 1% containing micropore.
Wherein, the melt index of polyvinyl resin be every 10 minutes 1��3 gram. Melt index examination criteria is ASTMD1238. Inorganic nano antiseptic is nano zine oxide. Foaming agent is butane, dimethyl ether two kinds is collaborative selects. The one of which helping foaming antishrinking agent to be glyceryl monostearate, Tissuemat E, OPE, EVA wax; The one of which that inorganic material nucleator is Pulvis Talci, calcium carbonate crystal whisker, calcium sulfate crystal whiskers and silicon carbide whisker containing micropore.
Embodiment 2
A kind of antibacterial polyethylene bubble, is grouped into by the one-tenth of following percentage by weight: polyvinyl resin 74%, inorganic nano antiseptic 2%, foaming agent 16%, help foaming antishrinking agent 7%, inorganic material nucleator 1% containing micropore.
Wherein, the melt index of polyvinyl resin be every 10 minutes 1��3 gram. Melt index examination criteria is ASTMD1238. Inorganic nano antiseptic is nano cupric oxide.Foaming agent is butane. Helping foaming antishrinking agent is glyceryl monostearate and Tissuemat E; Inorganic material nucleator containing micropore is calcium carbonate crystal whisker.
Embodiment 3
A kind of antibacterial polyethylene bubble, is grouped into by the one-tenth of following percentage by weight: polyvinyl resin 73%, inorganic nano antiseptic 3%, foaming agent 16%, help foaming antishrinking agent 7%, inorganic material nucleator 1% containing micropore.
Wherein, the melt index of polyvinyl resin be every 10 minutes 1��3 gram. Melt index examination criteria is ASTMD1238. Inorganic nano antiseptic is the mixture of nano zine oxide and nano cupric oxide. Foaming agent is dimethyl ether. Helping foaming antishrinking agent is OPE and the mixture of EVA wax; Inorganic material nucleator containing micropore is Pulvis Talci.
The preparation process of above-described embodiment is:
(1) using help foaming antishrinking agent be heated to 80 DEG C of grinding distribution agent as nano zine oxide in proportion with nano zine oxide on thermostatic type grinder nano zine oxide grind within 2 hours, form the nano material that mean diameter is 53nm become containing help foam antishrinking agent antibacterial plastic concentrate;
(2), by under the polyvinyl resin of a part, the inorganic material nucleator room temperature in a mixer containing micropore blended 20 minutes;
(3), extruded at 140��160 DEG C by the blend double screw extruder that step (2) obtains, to obtain pellet be functional master batch in pelletizing;
(4) functional master batch that, step (3) obtained, by a certain percentage with polyethylene raw material blended 20 minutes in a mixer;
(5) what, step (1) obtained is heated to 80 DEG C in order to being injected in the extruder of next step by a certain percentage containing the antibacterial plastic concentrate helping foaming antishrinking agent in the storage cylinder help foaming antishrinking agent dosing pump;
(6), blend step (4) obtained is with foaming agent injection pump with help the antibacterial plastic concentrate of foaming antishrinking agent to inject to heat in the separate unit screw extruder of dosing pump and inlet to 150 DEG C and carry out extrusion operation, separately foaming agent injection pump is injected from extruder blowing agent injection port, what step (5) obtained quantitatively injects in helping foaming antishrinking agent dosing pump containing the antibacterial plastic concentrate helping foaming antishrinking agent simultaneously, and extrusion obtains polyethylene bubble sheet material.
Embodiment 1 ~ 3 polyethylene foam piece performance is as shown in the table:
| Polyethylene bubble performance | Embodiment 1 | Embodiment 2 | Embodiment 3 | Selection standard or instrument |
| Inorganic nano antiseptic consumption (%) | 1 | 2 | 3 | ���� |
| Electronic Speculum surveys mean diameter (nm) | 53 | 53 | 53 | LA960WET particle size analyzer |
| Escherichia coli antibiotic rate (%) | 94 | 99.5 | 99.9 | ISO22196-2011 standard |
| Fracture tensile strength (MPa) | 8.12 | 8.56 | 8.82 | CPQ-WD-10 testing machine |
| Elongation at break (%) | 175 | 186 | 192 | CPQ-WD-10 testing machine |
The Particle Size of Nanometer ZnO tables of data that LA960WET particle size analyzer records embodiment 1 is as shown in the table:
By the testing result of embodiment 1 to 3, and the LA960WET particle size analyzer of 50000 times of pictures of nano zine oxide of the German ZEISSEVO18 type scanning electron microscope of embodiment 1 Fig. 1, Fig. 2 records the equal footpath 53.2nm of nano zine oxide and scattergram can be seen that, the escherichia coli antibiotic rate of gained antibacterial polyethylene bubble increases with nano zine oxide consumption (%) and increases, and its fracture tensile strength (MPa) and elongation at break (%) also increase with nano zine oxide consumption (%) and increase.
Embodiment described above only have expressed embodiments of the present invention; it describes comparatively concrete and detailed; but therefore can not be interpreted as the restriction to the scope of the claims of the present invention; in every case the technical scheme adopting the form of equivalent replacement or equivalent transformation to obtain, all should drop within protection scope of the present invention.
Claims (10)
1. an antibacterial polyethylene bubble, it is characterized in that, be made up of the component of following mass percent: polyvinyl resin 65��80%, inorganic nano antiseptic 0.5��4%, foaming agent 7��20%, help foaming antishrinking agent 3��9%, inorganic material nucleator 0.5��2% containing micropore.
2. antibacterial polyethylene according to claim 1 bubble, it is characterised in that the melt index of described polyethylene be every 10 minutes 1��3 gram.
3. antibacterial polyethylene according to claim 1 bubble, it is characterised in that: described inorganic nano antiseptic is at least one of nano zine oxide, nano cupric oxide.
4. antibacterial polyethylene according to claim 1 bubble, it is characterised in that: described foaming agent is at least one of butane, dimethyl ether.
5. antibacterial polyethylene according to claim 1 bubble, it is characterised in that: described in help foaming antishrinking agent be at least one of glyceryl monostearate, Tissuemat E, OPE, EVA wax.
6. antibacterial polyethylene according to claim 1 bubble, it is characterised in that: the described at least one that inorganic material nucleator is Pulvis Talci, calcium carbonate crystal whisker, calcium sulfate crystal whiskers and silicon carbide whisker containing micropore.
7. the antibacterial polyethylene bubble according to any one of claim 1 ~ 6, it is characterised in that: polyvinyl resin 68��78%, inorganic nano antiseptic 1��3%, foaming agent 12��18%, help foaming antishrinking agent 4��8%, inorganic material nucleator 0.8��1.5% containing micropore.
8. the antibacterial polyethylene bubble according to any one of claim 1 ~ 6, it is characterised in that: it is grouped into by the one-tenth of following percentage by weight: polyvinyl resin 75%, inorganic nano antiseptic 2%, foaming agent 15%, help foaming antishrinking agent 7%, inorganic material nucleator 1% containing micropore.
9. the preparation method of the antibacterial polyethylene bubble described in an any one of claim 1 ~ 6, it is characterised in that preparation process is:
(1) foaming antishrinking agent will be helped to be heated to 70��100 DEG C of grinding distribution agent as inorganic nano antiseptic, on thermostatic type grinder, inorganic nano antiseptic is ground with inorganic nano antiseptic in proportion and within 1��3 hour, form the nano material that particle diameter is 20��100nm, obtain containing the antibacterial plastic concentrate helping foaming antishrinking agent;
(2) by under a part of polyvinyl resin, inorganic material nucleator room temperature in a mixer containing micropore blended 15��30 minutes;
(3) extruded at 140��160 DEG C by the blend double screw extruder that step (2) obtains, pelletizing obtains functional master batch;
(4) functional master batch that step (3) is obtained by a certain percentage with step (2) remaining polyvinyl resin blended 15��30 minutes in a mixer;
(5) what step (1) obtained is heated to 70��100 DEG C in order to being injected in the extruder of next step by a certain percentage containing the antibacterial plastic concentrate helping foaming antishrinking agent in the storage cylinder help foaming antishrinking agent dosing pump;
(6) blend step (4) obtained is with carrying out extrusion operation with foaming agent injection pump and with injecting containing the antibacterial plastic concentrate helping foaming antishrinking agent to heat in the separate unit screw extruder of dosing pump and inlet to 140��160 DEG C, separately foaming agent injection pump is injected from extruder blowing agent injection port, what step (5) obtained quantitatively injects in helping foaming antishrinking agent dosing pump containing the antibacterial plastic concentrate helping foaming antishrinking agent simultaneously, and extrusion obtains polyethylene bubble sheet material.
10. the preparation method of antibacterial polyethylene according to claim 9 bubble, it is characterised in that: step (1) and (5) heating-up temperature are 80 DEG C, and milling time is 2 hours, and the particle diameter of gained nano material is 53nm; Step (2) and (4) blended time are 20min; Step (6) heating-up temperature is 150 DEG C.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108752734A (en) * | 2018-05-04 | 2018-11-06 | 广德祥源新材科技有限公司 | A kind of plastic foamed coiled material of degradable antimicrobial form and manufacturing method |
| CN109021360A (en) * | 2018-08-01 | 2018-12-18 | 福州市长乐区三互信息科技有限公司 | A kind of antibacterial automobile cushion and preparation method thereof |
| CN115895114A (en) * | 2022-11-23 | 2023-04-04 | 青岛润兴塑料新材料有限公司 | Anti-shrinkage degerming master batch for PP (polypropylene) and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101967244A (en) * | 2010-10-26 | 2011-02-09 | 浙江理工大学 | Anti-bacterial polythene foamed plastics and preparation method thereof |
| CN103788454A (en) * | 2014-01-22 | 2014-05-14 | 南通市海鸥救生防护用品有限公司 | Mildew-proof antibacterial polyethylene foam material and preparation method thereof |
| WO2014135541A2 (en) * | 2013-03-05 | 2014-09-12 | Total Research & Technology Feluy | Rotomoulded articles |
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| CN101967244A (en) * | 2010-10-26 | 2011-02-09 | 浙江理工大学 | Anti-bacterial polythene foamed plastics and preparation method thereof |
| WO2014135541A2 (en) * | 2013-03-05 | 2014-09-12 | Total Research & Technology Feluy | Rotomoulded articles |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108752734A (en) * | 2018-05-04 | 2018-11-06 | 广德祥源新材科技有限公司 | A kind of plastic foamed coiled material of degradable antimicrobial form and manufacturing method |
| CN109021360A (en) * | 2018-08-01 | 2018-12-18 | 福州市长乐区三互信息科技有限公司 | A kind of antibacterial automobile cushion and preparation method thereof |
| CN115895114A (en) * | 2022-11-23 | 2023-04-04 | 青岛润兴塑料新材料有限公司 | Anti-shrinkage degerming master batch for PP (polypropylene) and preparation method thereof |
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