CN102276923B - Foamed polypropylene material - Google Patents
Foamed polypropylene material Download PDFInfo
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- CN102276923B CN102276923B CN 201110250520 CN201110250520A CN102276923B CN 102276923 B CN102276923 B CN 102276923B CN 201110250520 CN201110250520 CN 201110250520 CN 201110250520 A CN201110250520 A CN 201110250520A CN 102276923 B CN102276923 B CN 102276923B
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Abstract
The invention provides a foamed polypropylene (PP) material which is prepared from the following components in parts by weight: 80-95 parts of PP:T30S, 5-20 parts of polyethylene (PE), 0.8-1.5 parts of foaming agent, 0.5-1 part of foaming aid, 0.2-0.8 part of cross-linking agent, 0.2-0.5 part of nucleating agent and 0.5-1.2 parts of assistant cross-linking agent. In the foamed PP material provided by the invention, the cost can be lowered because of the addition of the PE, the consumption of the PP is greatly reduced at the same volume of a syringe core rod, and the foamed PP material has the advantages of easy shaping, uniform product foaming, good mechanical strength and the like and is favorable for lowering the cost and protecting the environment.
Description
Technical field
The present invention relates to the material modified field of medical PP, the PP that is specifically related to a kind of syringe core rod is material modified.
Background technology
China is disposable syringe big producing country, approximately has 13,000,000,000 in 1 year, and how annual a large amount of polypropylene (PP) starting material that consume in the more and more nervous situation of petroleum resources, save the use to material at present, become numerous producers urgent problem.And the micropore foamed polymer density of material is than the front a kind of novel thermoplastic macromolecule material that reduces 5 %～98 % of foaming.Have the excellent properties such as low, the higher shock strength of density, specific tenacity, fatigue resistance and thermostability.The core bar of syringe does not contact liquid, and is lower to the requirement of PP, but the present core bar of syringe on the market all adopts plain polypropylene injection molding, all does burning disposal as medical waste after use.Not only consume a large amount of polypropylene starting material, also environment has been caused certain pollution.
Summary of the invention
In order to save as far as possible polyacrylic usage quantity, and do not reduce the physical strength of syringe core rod, the purpose of this utility model is to provide that a kind of light weight, specific tenacity that is applied to syringe core rod is high, the cost low foaming polypropylene material.
In order to achieve the above object, the present invention has adopted following technical scheme:
A kind of expanded polypropylene material, count by weight ratio this material and made by following composition:
PP:T30S 80-95 part
PE:5-20 part
Whipping agent: 0.8-1.5 part
Frothing aid: 0.5-1 part
Linking agent: 0.2-0.8 part
Nucleator: 0.2-0.5 part
Auxiliary crosslinking agent: 0.5-1.2 part
Above-mentioned whipping agent is that particle diameter is the Cellmic C 121 of 4 μ m, and this heat release type whipping agent has that gas forming amount is large, low price, good dispersity, resolvent are nontoxic, odorless, the advantage such as do not pollute.
Above-mentioned frothing aid is zinc oxide.
Above-mentioned linking agent is dicumyl peroxide.Softening temperature and the melting temperature of polypropylene (PP) are more approaching, and after it reached melt temperature, melt viscosity sharply descended, and cause polypropylene expanded temperature range less.The melt strength that the present invention improves PP by little crosslinked (linking agent of employing is dicumyl peroxide) improves the PP foam performance.
Above-mentioned nucleator is that granularity is 5000 purpose talcum powder.
Above-mentioned auxiliary crosslinking agent is Vinylstyrene.
A kind of preparation method of expanded polypropylene material, the method comprises the following steps:
(1) whipping agent, frothing aid are evenly mixed by above-mentioned formula ratio, and ground to form the fine powder of 100 mesh sieves, i.e. modified foaming agent.
(2) modified foaming agent that PP, PE, nucleator, linking agent, auxiliary crosslinking agent and the step (1) of above-mentioned formula ratio is obtained joins in high mixed pot and mixed 10 minutes, and rotating speed is 600 r/min.
(3) mix after, namely get expanded polypropylene material.
Performance of the present invention has been done following examining report, and reporting the result sees Table 1.
Table 1 Performance Detection account of the present invention.
Contrast with performance test results of the present invention and pure PP material: the tensile strength of material of the present invention (microporous foam PP material) reduces by 20% left and right than pure PP; The Izod notched Izod impact strength improves 30% left and right than pure PP, and density has reduced by 20% left and right.
The beneficial effects of the utility model are: in the utility model, can reduce costs adding of PE; greatly reduce with the syringe core rod PP materials under volume, have a moulding easy, the goods uniform in foaming; the advantages such as mechanical strength is good are conducive to reduce costs and protection of the environment.
Specific embodiment
Embodiment 1
Taking particle diameter is the Cellmic C 121 0.8kg of 4 μ m, and zinc oxide 0.5kg mixes, and grinds to form the fine powder of 100 mesh sieves, i.e. modified foaming agent.
With the PP:T30S of 80kg, 5kgPE, the 0.2kg granularity is 5000 purpose talcum powder, and 0.2kg dicumyl peroxide, the modified foaming agent that 0.5kg Vinylstyrene and abovementioned steps obtain join in high mixed pot and mixed 10 minutes, and rotating speed is 600 r/min.Mix and namely get expanded polypropylene material of the present invention.
Embodiment 2
Taking particle diameter is the Cellmic C 121 1.2kg of 4 μ m, and zinc oxide 0.8kg mixes, and grinds to form the fine powder of 100 mesh sieves, i.e. modified foaming agent.
With the PP:T30S of 88kg, 13kgPE, the 0.35kg granularity is 5000 purpose talcum powder, and 0.5kg dicumyl peroxide, the modified foaming agent that 0.8kg Vinylstyrene and abovementioned steps obtain join in high mixed pot and mixed 10 minutes, and rotating speed is 600 r/min.Mix and namely get expanded polypropylene material of the present invention.
Embodiment 3
Taking particle diameter is the Cellmic C 121 1.5kg of 4 μ m, and zinc oxide 1kg mixes, and grinds to form the fine powder of 100 mesh sieves, i.e. modified foaming agent.
With the PP:T30S of 95kg, 20kgPE, 0. 5kg granularity is 5000 purpose talcum powder, and 0.8kg dicumyl peroxide, the modified foaming agent that 1.2kg Vinylstyrene and abovementioned steps obtain join in high mixed pot and mixed 10 minutes, and rotating speed is 600 r/min.Mix and namely get expanded polypropylene material of the present invention.
Claims (4)
1. the preparation method of an expanded polypropylene material, is characterized in that, this preparation method has following steps:
Taking particle diameter is the Cellmic C 121 0.8kg of 4 μ m, and zinc oxide 0.5kg mixes, and grinds to form the fine powder of 100 mesh sieves, i.e. modified foaming agent;
With the PP:T30S of 80kg, 5kgPE, the 0.2kg granularity is 5000 purpose talcum powder, 0.2kg dicumyl peroxide, mixed 10 minutes 0.5kg the modified foaming agent that Vinylstyrene and abovementioned steps obtain joins in high mixed pot, rotating speed is 600 r/min, mixes namely to get expanded polypropylene material.
2. the preparation method of an expanded polypropylene material, is characterized in that, this preparation method has following steps:
Taking particle diameter is the Cellmic C 121 1.2kg of 4 μ m, and zinc oxide 0.8kg mixes, and grinds to form the fine powder of 100 mesh sieves, i.e. modified foaming agent;
PP:T30S with 88kg, 13kgPE, 0.35kg granularity is 5000 purpose talcum powder, 0.5kg dicumyl peroxide, 0.8kg joining in high mixed pot, mixed 10 minutes the modified foaming agent that Vinylstyrene and abovementioned steps obtain, rotating speed is 600 r/min, mixes namely to get expanded polypropylene material.
3. the preparation method of an expanded polypropylene material, is characterized in that, this preparation method has following steps:
Taking particle diameter is the Cellmic C 121 1.5kg of 4 μ m, and zinc oxide 1kg mixes, and grinds to form the fine powder of 100 mesh sieves, i.e. modified foaming agent;
PP:T30S with 95kg, 20kgPE, 0. the 5kg granularity is 5000 purpose talcum powder, 0.8kg dicumyl peroxide, 1.2kg joining in high mixed pot, mixed 10 minutes the modified foaming agent that Vinylstyrene and abovementioned steps obtain, rotating speed is 600 r/min, mixes namely to get expanded polypropylene material.
4. prepared expanded polypropylene material of preparation method as the described expanded polypropylene material of claim 1-3 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110250520 CN102276923B (en) | 2011-08-29 | 2011-08-29 | Foamed polypropylene material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110250520 CN102276923B (en) | 2011-08-29 | 2011-08-29 | Foamed polypropylene material |
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| Publication Number | Publication Date |
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| CN102276923A CN102276923A (en) | 2011-12-14 |
| CN102276923B true CN102276923B (en) | 2013-05-15 |
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| CN 201110250520 Active CN102276923B (en) | 2011-08-29 | 2011-08-29 | Foamed polypropylene material |
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103254507B (en) * | 2012-02-16 | 2016-11-02 | 合肥杰事杰新材料股份有限公司 | A kind of resistance to stress is turned white filled modified polypropylene composite and preparation method thereof |
| CN103304889A (en) * | 2012-03-13 | 2013-09-18 | 明天塑料(上海)有限公司 | Foamed board for vehicle seat |
| CN103360711B (en) * | 2012-03-29 | 2017-06-27 | 上海杰事杰新材料(集团)股份有限公司 | A kind of microporous foam polypropylene material and preparation method thereof |
| CN103232626A (en) * | 2013-04-03 | 2013-08-07 | 宁波高新区辉门科技有限公司 | High temperature-resistant chemically cross-linked polyethylene foam material |
| CN103509245B (en) * | 2013-09-18 | 2014-12-03 | 湖北南泽汽车复合材料有限公司 | Production method of one-step method polypropylene foam material |
| CN103554658A (en) * | 2013-10-18 | 2014-02-05 | 深圳职业技术学院 | Porous plastic material and preparation method thereof |
| CN104311993B (en) * | 2014-09-24 | 2016-09-07 | 简淦欢 | A kind of polypropylene board foam process |
| CN104987585B (en) * | 2015-06-03 | 2017-12-08 | 湖北南泽汽车复合材料有限公司 | The automotive trim expanded material that calcium sulfate crystal whiskers are mixed with polypropylene |
| CN105037932A (en) * | 2015-07-07 | 2015-11-11 | 福州海燕塑胶机械有限公司 | Polypropylene in-mold molded foamed product, and formula and making process thereof |
| CN107501593A (en) * | 2017-08-22 | 2017-12-22 | 成都新柯力化工科技有限公司 | It is a kind of with nanoscale polypropylene powder non-melt state blown foams method |
| CN107383563A (en) * | 2017-09-07 | 2017-11-24 | 苏州浩焱精密模具有限公司 | A kind of antibiotic plastic and preparation method thereof |
| CN108329597A (en) * | 2018-03-21 | 2018-07-27 | 惠州市峄董塑胶科技有限公司 | A kind of PP and PE alloy structure foaming plates and preparation method thereof |
| CN109181098A (en) * | 2018-07-16 | 2019-01-11 | 苏州润佳工程塑料股份有限公司 | A kind of low smell environmental protection PP composite material and preparation method thereof |
| CN113831646A (en) * | 2021-09-08 | 2021-12-24 | 南京雷泰克材料科技有限公司 | Preparation method of polypropylene foam |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1282703C (en) * | 2003-10-30 | 2006-11-01 | 中国石油化工股份有限公司 | Foamed poly propylene material and its preparing method |
| CN101081914A (en) * | 2007-07-06 | 2007-12-05 | 天津市润生塑胶制品有限公司 | Polypropylene expanded material and method for manufacturing same |
| CN101353460B (en) * | 2008-09-11 | 2011-11-16 | 丹阳市华东工程塑料有限公司 | Environment-friendly type micro-foaming polypropylene sheet and preparation thereof |
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