CN103113657A - Liquid crystal ultrahigh molecular polyethylene composite material - Google Patents
Liquid crystal ultrahigh molecular polyethylene composite material Download PDFInfo
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- CN103113657A CN103113657A CN2013100651258A CN201310065125A CN103113657A CN 103113657 A CN103113657 A CN 103113657A CN 2013100651258 A CN2013100651258 A CN 2013100651258A CN 201310065125 A CN201310065125 A CN 201310065125A CN 103113657 A CN103113657 A CN 103113657A
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- liquid crystal
- ultrahigh molecular
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- molecular polyethylene
- polyethylene
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Abstract
The invention relates to a liquid crystal ultrahigh molecular polyethylene composite material, and belongs to the technical field of high molecular materials. The liquid crystal ultrahigh molecular polyethylene composite material is prepared from 70.5-88.5wt% of ultrahigh molecular weight polyethylene, 8-26wt% of liquid crystal high-molecular polymer, 2.5wt% of superfine graphite and 1wt% of calcium stearate at a mass ratio. The raw materials in the proportions are input into a blending machine to stir for 50-60 minutes; and a powder material is put into a mould for mould pressing and sintering at 280-300 DEG C to prepare the liquid crystal ultrahigh molecular polyethylene modified composite material. By using the liquid crystal ultrahigh molecular polyethylene modified composite material prepared from the formulas, under the condition of keeping the original high performance of the ultrahigh molecular polyethylene product, the comprehensive performance is improved, the softening temperature reaches 110 DEG C, the tensile strength is 35 MPa, the abrasion loss is 0.08mg, and the shore hardness is 68-72 gram force.
Description
Technical field
The invention belongs to technical field of polymer materials, relate in particular to a kind of lining material of material-transporting system.
Background technology
Ultra high molecular polyethylene in the market (UHMWPE) goods are a kind of simple macromolecular materials, although ultrahigh molecular weight polyethylene(UHMWPE) has comprehensive excellent properties, still have its weak point, such as, the defectives such as surface hardness is low, and resistance to elevated temperatures and abrasive wear resistance are poor.
The production of the ultra high molecular polyethylene product on market is that raw material is put into press sintering pressing process mostly now, can only keep the performance of ultra high molecular polyethylene product own.The ultra high molecular polyethylene product does not add 80 ℃ of the product heat-drawn wires that any formula produces, tensile strength 23.7MPa, abrasion loss 0.15mg, shore hardness 64-66 gram force in process of production.
Summary of the invention
For above-mentioned technical problem, in order to make ultrahigh molecular weight polyethylene(UHMWPE) to be applied in some higher occasion of conditional request, the invention provides a kind of liquid crystal ultra high molecular polyethylene modified composite material that improves ultrahigh molecular weight polyethylene(UHMWPE) resistance toheat, wear resisting property and tensile strength.
Liquid crystal ultra high molecular polyethylene modified composite material of the present invention is 70.5% ~ 88.5% ultrahigh molecular weight polyethylene(UHMWPE) by mass ratio, 8% ~ 26% polymeric liquid crystal copolymer, and 2.5% superfine graphite, 1% calcium stearate forms.
Above ratio formula starting material are dropped into mixer to be stirred 50 ~ 60 minutes, again powder is put into mould and carried out 280 ℃ ~ 300 ℃ molding sinterings, can make liquid crystal ultra high molecular polyethylene modified composite material, the liquid crystal ultra high molecular polyethylene modified composite material of the present invention that makes by above-mentioned formula, in the situation that keep the original excellent properties of ultra high molecular polyethylene product itself, its over-all properties is improved, its softening temperature reaches 110 ℃, tensile strength 35MPa, abrasion loss 0.08mg, shore hardness 68-72 gram force.
Embodiment
Below in conjunction with specific embodiment, the present invention is made and further illustrating.
With specified amount polymeric liquid crystal copolymer (LCP), ultrahigh molecular weight polyethylene(UHMWPE) (UHMWPE) and specific adjuvant mix, when with LCP, ultrahigh molecular weight polyethylene(UHMWPE) being carried out modification, its prescription quality ratio is 70.5% ~ 88.5% ultra high molecular polyethylene raw material, 8% ~ 26% polymeric liquid crystal copolymer, 2.5% superfine graphite, 1% calcium stearate.Above ratio formula starting material are dropped into mixer stirred 50 ~ 60 minutes, according to the needs of sheet material, powder is put into corresponding mould carry out molding sintering, sintering temperature is 280 ℃ ~ 300 ℃.
Polymeric liquid crystal copolymer is a kind of high performance engineering plastics, has excellent mechanical property, outstanding wear resistance, minimum linear expansivity, and melt viscosity is low, and the forming process good fluidity carries out modification with it to ultrahigh molecular weight polyethylene(UHMWPE), can significantly improve the performance of ultrahigh molecular weight polyethylene(UHMWPE), its mechanism be classified as following some: (1) forms fento; (2) crystalline substance is crossed in formation; (3) the same consistency of wild phase; Increase by 2.5% graphite, be a kind of Dark grey, metalluster arranged and opaque finely squamose solid as preferred described graphite, graphite is very soft, and soapy feeling is arranged, applicable weighting agent or the improvement in performance agent of doing rubber plastic and various matrix materials is to improve wear-resisting, the crushing resistance of material.Can make the performance of the ultra high molecular polyethylene product of modification by above-mentioned formula, keeping in the immovable situation of the original performance of ultra high molecular polyethylene product, its over-all properties is improved, its softening temperature reaches 110 ℃, tensile strength, 35MPa, abrasion loss 0.08mg, shore hardness 68-72 gram force.
The present invention's description and application here is illustrative, be not to want with scope of the present invention restriction in the above-described embodiments, so the present invention is not subjected to the restriction of the present embodiment, and the technical scheme that any employing equivalence replacement obtains all within the scope of the invention.
Claims (2)
1. a liquid crystal ultra high molecular polyethylene modified composite material, is characterized in that, is 70.5% ~ 88.5% ultrahigh molecular weight polyethylene(UHMWPE) by mass ratio, 8% ~ 26% polymeric liquid crystal copolymer, and 2.5% graphite, 1% calcium stearate forms.
2. the liquid crystal ultra high molecular polyethylene modified composite material of sleeve pipe monaural according to claim 1, it is characterized in that: described graphite is the finely squamose solid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100651258A CN103113657A (en) | 2013-03-01 | 2013-03-01 | Liquid crystal ultrahigh molecular polyethylene composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100651258A CN103113657A (en) | 2013-03-01 | 2013-03-01 | Liquid crystal ultrahigh molecular polyethylene composite material |
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| Publication Number | Publication Date |
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| CN103113657A true CN103113657A (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013100651258A Pending CN103113657A (en) | 2013-03-01 | 2013-03-01 | Liquid crystal ultrahigh molecular polyethylene composite material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109280245A (en) * | 2018-09-19 | 2019-01-29 | 茹佰裕 | Modified ultra-high molecular weight polyethylene material and its be used as railroad tie plate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101724189A (en) * | 2008-10-27 | 2010-06-09 | 周恒勇 | Preparation method of composite material with high strength as well as corrosion and high-temperature resistance |
| CN102417650A (en) * | 2011-11-28 | 2012-04-18 | 浙江伟星新型建材股份有限公司 | Wear-resistant crosslinked PE (Polyethylene) composite pipe and manufacturing method thereof |
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2013
- 2013-03-01 CN CN2013100651258A patent/CN103113657A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101724189A (en) * | 2008-10-27 | 2010-06-09 | 周恒勇 | Preparation method of composite material with high strength as well as corrosion and high-temperature resistance |
| CN102417650A (en) * | 2011-11-28 | 2012-04-18 | 浙江伟星新型建材股份有限公司 | Wear-resistant crosslinked PE (Polyethylene) composite pipe and manufacturing method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109280245A (en) * | 2018-09-19 | 2019-01-29 | 茹佰裕 | Modified ultra-high molecular weight polyethylene material and its be used as railroad tie plate |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20130522 |