CN102585332B - Modified ultra-high molecular weight polyethylene material - Google Patents
Modified ultra-high molecular weight polyethylene material Download PDFInfo
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- CN102585332B CN102585332B CN 201210045075 CN201210045075A CN102585332B CN 102585332 B CN102585332 B CN 102585332B CN 201210045075 CN201210045075 CN 201210045075 CN 201210045075 A CN201210045075 A CN 201210045075A CN 102585332 B CN102585332 B CN 102585332B
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Abstract
The invention discloses a modified ultra-high molecular weight polyethylene material, which comprises the following components in percentage by mass: 60 to 70 percent of ultra-high molecular weight polyethylene, 10 to 20 percent of polyolefin elastomer (POE), 10 to 20 percent of polypropylene (PP), 1 to 8 percent of polyethylene wax, 1 to 2 percent of N-(beta-aminoethyl)-gamma-aminopropyl trimethoxy silane and 0.5 to 1 percent of antioxidant 1010. The modified ultra high molecular weight polyethylene material has excellent toughness and good processing property, the sliding frictional wear quantity of the material is more than or equal to 13mg, the tensile strength of the material is more than or equal to 42MPa, and the elongation at break is more than or equal to 550 percent.
Description
Technical field
The invention belongs to technical field of polymer materials, relate to a kind of polymer blended material, relate in particular to a kind of modified ultra-high molecular weight polyethylene material.The present invention is applied to super wear-resisting environment, can guarantee simultaneously higher tensile strength and elongation at break.
Background technology
Ultrahigh molecular weight polyethylene(UHMWPE) is the very excellent thermoplastic engineering plastic of a kind of over-all properties.Because it has superpower wear resistance, excellent shock-resistance, lower temperature resistance and excellent self lubricity has desirable application prospect in a lot of fields.But the melting viscosity of ultrahigh molecular weight polyethylene(UHMWPE) is high, and huge molecular chain length causes intermolecular reactive force to be similar to covalent linkage effect between the backbone c atoms, so that the processing temperature narrow range of material, the situation of oxidative degradation occurs easily.So can only be to adopt intermittent type molding sintering moulding process to existing ultrahigh molecular weight polyethylene(UHMWPE), produce simple bar and sheet material, obtain end article by secondary mechanical processing again, thereby limited the actual industrial application of polyethylene ultrahigh molecular weight polyethylene(UHMWPE).The researchist mainly addresses the problem of ultrahigh molecular weight polyethylene(UHMWPE) processing difficulties from two aspects at present, and the one, existing polymer processing machinery equipment is carried out modification, comprise the special length-to-diameter ratio of design, special screw-rod structure and technique; Be exactly on the other hand in the ultrahigh molecular weight polyethylene(UHMWPE) system, to sneak into specific material to improve its plasticizing capacity man-hour adding.The former is the supplementary means appearance with the latter, for example disclosed situation in " patent CN1284944C " and " patent CN1253501C " owing to the high in cost of production reason is mostly.Major part is to adopt common polymer processing equipment that the ultrahigh molecular weight polyethylene(UHMWPE) of blending and modifying is processed, for example disclosed situation among " patent CN1156527C ", " patent CN1156528C ", " patent CN1070888C ", " the patent CN101235170B ".The superhigh molecular weight polyethylene material that obtains by above-mentioned processing units or method of modifying all has the performances such as good wear-resisting, high breaking tenacity, but most elongation at break all can not surpass 400%, many times all be difficult to satisfy service requirements.
Summary of the invention
The objective of the invention is to be difficult to satisfy for the elongation at break of existing modified ultra-high molecular weight polyethylene material the technical problem of service requirements, select POE that ultrahigh molecular weight polyethylene(UHMWPE) is carried out blending and modifying, and by extruding pelletization, provide a kind of modified ultra-high molecular weight polyethylene material of injection grade.
In order to achieve the above object, the present invention addresses the above problem the technical scheme of taking and is:
A kind of modified ultra-high molecular weight polyethylene material, by the quality percentage composition by component: ultrahigh molecular weight polyethylene(UHMWPE) is 60～70%, POE is 10～20%, PP is 10～20%, polyethylene wax is 1～8%, N – (β – aminoethyl) – γ – aminopropyl trimethoxysilane is 1～2%, and antioxidant 1010 is 0.5～1% composition.
Wherein, described POE is the ethene that obtains by in-situ polymerization with metallocene catalyst and the thermoplastic elastomer of octene.
Above-mentioned modified ultra-high molecular weight polyethylene material preparation method: with ultrahigh molecular weight polyethylene(UHMWPE), POE, PP, polyethylene wax, N – (β – aminoethyl) – γ – aminopropyl trimethoxysilane, that antioxidant 1010 is inserted high-speed mixer and mixing is even; Then use common twin screw extruder that the said mixture material is carried out granulation, one to seven district's temperature is respectively 160 ℃, 180 ℃, 195 ℃, 210 ℃, 220 ℃, 210 ℃, 200 ℃.
Modified ultra-high molecular weight polyethylene material of the present invention compared with prior art, because wherein component POE is the ethene that obtains by in-situ polymerization with metallocene catalyst and the thermoplastic elastomer of octene, POE plastic molecules amount narrowly distributing, have preferably flowability, good with compatible polyolefin.The flexible chain coiled structure of octene and the ethylene chain of crystallization are as the physical crosslinking point, so that the toughness of the existing excellence of the present invention has again good processibility.The above-mentioned performance of POE provides theoretical basis for its modification to ultrahigh molecular weight polyethylene(UHMWPE), the soft curling chain structure of octene can suitably weaken reactive force between the ultrahigh molecular weight polyethylene(UHMWPE) molecular chain in the molecular structure in addition, thereby has further improved the workability of system.More crucial is, the modified ultra-high molecular weight polyethylene material that obtains by technical scheme of the present invention is because the soft curling chain structure of POE forms inierpeneirating network structure in system.Such interpenetrating(polymer)networks can form point of connection, play connection, shock absorption between each composition, reduce crazing because of the stressed chance that develops into crackle, and the elongation at break of system is significantly increased.Sliding frictional wear amount 〉=13mg that material is final, tensile strength 〉=42Mpa, elongation at break 〉=550%.
Embodiment
Further describe technical scheme of the present invention below by specific examples.
Embodiment 1:
Modified ultra-high molecular weight polyethylene material of the present invention makes (quality percentage composition) by following proportioning blending extrusion:
At first with ultrahigh molecular weight polyethylene(UHMWPE), POE, PP, polyethylene wax, N – (β – aminoethyl) – γ – aminopropyl trimethoxysilane, that antioxidant 1010 is inserted high-speed mixer and mixing is even.Then use common twin screw extruder that the said mixture material is carried out granulation, one to seven district's temperature is respectively 160 ℃, 180 ℃, 195 ℃, 210 ℃, 220 ℃, 210 ℃, 200 ℃.The final sliding frictional wear amount of material is 13mg, and tensile strength is 46Mpa, and elongation at break is 570%.
Embodiment 2:
Modified ultra-high molecular weight polyethylene material of the present invention makes (quality percentage composition) by following proportioning blending extrusion:
At first with ultrahigh molecular weight polyethylene(UHMWPE), POE, PP, polyethylene wax, N – (β – aminoethyl) – γ – aminopropyl trimethoxysilane, that antioxidant 1010 is inserted high-speed mixer and mixing is even.Then use common twin screw extruder that the said mixture material is carried out granulation, one to seven district's temperature is respectively 160 ℃, 180 ℃, 195 ℃, 210 ℃, 220 ℃, 210 ℃, 200 ℃.The final sliding frictional wear amount of material is 20mg, and tensile strength is 42Mpa, and elongation at break is 600%.
Embodiment 3:
Modified ultra-high molecular weight polyethylene material of the present invention makes (quality percentage composition) by following proportioning blending extrusion:
At first with ultrahigh molecular weight polyethylene(UHMWPE), POE, PP, polyethylene wax, N – (β – aminoethyl) – γ – aminopropyl trimethoxysilane, that antioxidant 1010 is inserted high-speed mixer and mixing is even.Then use common twin screw extruder that the said mixture material is carried out granulation, one to seven district's temperature is respectively 160 ℃, 180 ℃, 195 ℃, 210 ℃, 220 ℃, 210 ℃, 200 ℃.The final sliding frictional wear amount of material is 17mg, and tensile strength is 45Mpa, and elongation at break is 550%.
Embodiment 4:
Modified ultra-high molecular weight polyethylene material of the present invention makes (quality percentage composition) by following proportioning blending extrusion:
At first with ultrahigh molecular weight polyethylene(UHMWPE), POE, PP, polyethylene wax, N – (β – aminoethyl) – γ – aminopropyl trimethoxysilane, that antioxidant 1010 is inserted high-speed mixer and mixing is even.Then use common twin screw extruder that the said mixture material is carried out granulation, one to seven district's temperature is respectively 160 ℃, 180 ℃, 195 ℃, 210 ℃, 220 ℃, 210 ℃, 200 ℃.The final sliding frictional wear amount of material is 15mg, and tensile strength is 47Mpa, and elongation at break is 580%.
Embodiment 5:
Modified ultra-high molecular weight polyethylene material of the present invention makes (quality percentage composition) by following proportioning blending extrusion:
At first with ultrahigh molecular weight polyethylene(UHMWPE), POE, PP, polyethylene wax, N – (β – aminoethyl) – γ – aminopropyl trimethoxysilane, that antioxidant 1010 is inserted high-speed mixer and mixing is even.Then use common twin screw extruder that the said mixture material is carried out granulation, one to seven district's temperature is respectively 160 ℃, 180 ℃, 195 ℃, 210 ℃, 220 ℃, 210 ℃, 200 ℃.The final sliding frictional wear amount of material is 18mg, and tensile strength is 44Mpa, and elongation at break is 590%.
Embodiment 6:
Modified ultra-high molecular weight polyethylene material of the present invention makes (quality percentage composition) by following proportioning blending extrusion:
At first with ultrahigh molecular weight polyethylene(UHMWPE), POE, PP, polyethylene wax, N – (β – aminoethyl) – γ – aminopropyl trimethoxysilane, that antioxidant 1010 is inserted high-speed mixer and mixing is even.Then use common twin screw extruder that the said mixture material is carried out granulation, one to seven district's temperature is respectively 160 ℃, 180 ℃, 195 ℃, 210 ℃, 220 ℃, 210 ℃, 200 ℃.The final sliding frictional wear amount of material is 16mg, and tensile strength is 43Mpa, elongation at break 630%.
Claims (1)
1. modified ultra-high molecular weight polyethylene material, it is characterized in that, by the quality percentage composition by component: ultrahigh molecular weight polyethylene(UHMWPE) is 60～70%, POE is 10～20%, PP is 10～20%, polyethylene wax is that 1～8%, N – (β – aminoethyl) – γ – aminopropyl trimethoxysilane is 1～2%, and antioxidant 1010 is 0.5～1% composition; Described POE is the ethene that obtains by in-situ polymerization with metallocene catalyst and the thermoplastic elastomer of octene.
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| CN 201210045075 CN102585332B (en) | 2012-02-27 | 2012-02-27 | Modified ultra-high molecular weight polyethylene material |
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| CN104031305B (en) * | 2014-05-08 | 2017-09-12 | 上海化工研究院有限公司 | The PP Pipe Compound of ultrahigh molecular weight polyethylene tubing and its preparation and application |
| CN104513418A (en) * | 2014-10-17 | 2015-04-15 | 苏州莱特复合材料有限公司 | Conductive UHMWPE metal powder composite material and preparation method thereof |
| CN104497403B (en) * | 2014-12-19 | 2017-08-22 | 上海邦中新材料有限公司 | A kind of ultra-high molecular weight polyvinyl composite |
| CN108314828A (en) * | 2018-05-10 | 2018-07-24 | 重庆新康意安得达尔新材料有限公司 | A kind of polymer composite that wear-resisting property is good |
| CN109912945B (en) * | 2018-11-19 | 2021-04-30 | 江苏科技大学 | High-molecular-weight polylactic acid material and preparation method thereof |
| CN111690261B (en) * | 2019-03-15 | 2022-08-19 | 国家能源投资集团有限责任公司 | Wear-resistant material, preparation method and application thereof, and slurry pipeline |
| CN110157078A (en) * | 2019-06-05 | 2019-08-23 | 湖北科普达高分子材料股份有限公司 | A kind of outdoor optical cable frame material and preparation method thereof |
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| JP2593678B2 (en) * | 1988-01-27 | 1997-03-26 | 三ツ星ベルト株式会社 | Ultra high molecular weight polyethylene composition |
| CN1180013C (en) * | 2002-08-29 | 2004-12-15 | 四川大学 | Super high molecular weight polyethylene blend capable of using in extrusion processing and its processing method |
| US20040048958A1 (en) * | 2002-09-06 | 2004-03-11 | Didier David A. | High temperature ultra high molecular weight polyethylene |
| JP2004189902A (en) * | 2002-12-12 | 2004-07-08 | Mitsuboshi Belting Ltd | Ultra high molecular weight polyethylene resin composition |
| CN1279100C (en) * | 2003-08-07 | 2006-10-11 | 上海化工研究院 | Method for preparing ultrahigh molecular weight polyethylene hopper |
| CN1244626C (en) * | 2004-03-12 | 2006-03-08 | 四川大学 | Composite of polyethylene with low viscosity ultra high moleculer weight and preparation process thereof |
| CN100371379C (en) * | 2006-03-28 | 2008-02-27 | 四川大学 | Ultrahigh molecular weight polyethylene composition capable of being extrusion molded and its prepn process |
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Application publication date: 20120718 Assignee: DARAMIC XIANGYANG BATTERY SEPARATOR CO., LTD. Assignor: Jiangsu University of Science and Technology Contract record no.: 2014420000080 Denomination of invention: Modified ultra-high molecular weight polyethylene material Granted publication date: 20131030 License type: Exclusive License Record date: 20140528 |
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