CN1245179A - Superhigh-molecular polyethylene composition able to be processed by extruding-out method - Google Patents
Superhigh-molecular polyethylene composition able to be processed by extruding-out method Download PDFInfo
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- CN1245179A CN1245179A CN 99119536 CN99119536A CN1245179A CN 1245179 A CN1245179 A CN 1245179A CN 99119536 CN99119536 CN 99119536 CN 99119536 A CN99119536 A CN 99119536A CN 1245179 A CN1245179 A CN 1245179A
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Abstract
A superhigh-molecular polyethylene composition able to be shaped by extruding-out is prepared from superhigh-molecule (1000000-4000000) polyethylene, decahydronaphthalene, low-molecule polyethylene, imide lubricant, and nm-class SiO2 or Al2O3 through mixing at 60 +/- 5 deg.C. Its advantages is high mechanical performance.
Description
The present invention relates to a kind of ultra-high molecular weight polyvinyl composite, the ultra-high molecular weight polyvinyl composite that particularly a kind of available extrusion molding is processed.
Ultrahigh molecular weight polyethylene(UHMWPE), be meant that molecular weight is up to the polyethylene more than 1,000,000, goods after the ultrahigh molecular weight polyethylene(UHMWPE) processing, with its high impact-resistant, high-wearing feature and ten big excellent properties such as lower temperature resistance and self lubricity and become one of engineering plastics that the modern times are attracted attention most.But because molecular weight up to more than 1,000,000, so its viscosity is high, generally reaches 10
9PaS, this high viscosity, can only be processed into simple goods with pushing method and sintering, pressing in the prior art, as sheet material, but then can't process for tubing and special-shaped material, use widely, at present thereby limit it with extrusion molding, the researchist of Mitsui, West Germany's Hirst, AM General company is being engaged in the extrusion molding working research of ultrahigh molecular weight polyethylene(UHMWPE), but there is no the report of success.
Chinese patent application CN98100960 has disclosed and added high molecule liquid crystal in ultrahigh molecular weight polyethylene(UHMWPE), can extrude processing, but extruding processing temperature must be up to more than 300 ℃, in fact under this temperature, the existing high temperature oxidation degraded of so-called ultrahigh molecular weight polyethylene(UHMWPE) takes place, the mechanicalness of extruding the back plastics is very low, is difficult to compare with the performance that the pushing method is processed into goods with pure High molecular weight polyethylene.Therefore, seeking a kind of new prescription ultrahigh molecular weight polyethylene(UHMWPE) can be processed with extrusion molding, do not lose the superior mechanical property of original ultrahigh molecular weight polyethylene(UHMWPE) again, is the problem that faces now.
The ultra-high molecular weight polyvinyl composite that the object of the present invention is to provide a kind of available extrusion molding to process, it can be extruded at common forcing machine, not only production efficiency can improve greatly, and mechanical performance of products can compare favourably with the performance of pure ultra-high molecular mass polyethylene with the processing of pushing method.
Embodiment of the present invention are as follows:
(A) proportioning, in weight part:
Ultra-high molecular weight (100-500 ten thousand) polyethylene 100
Naphthane 3-5
Lower molecular weight (1000-20000) polyethylene is as macromolecule wax 2-5
Amides lubricant 2-5
Nanometer grade silica or aluminium sesquioxide 1-3
(B) method for making: in the multimixer that band stirs, add ultrahigh molecular weight polyethylene(UHMWPE), naphthane, low molecular weight polyethylene, amides lubricant and nanometer grade silica or aluminium sesquioxide successively by said ratio, be warmed up to 60 ± 5 ℃, stirred 5-10 minute.
Above-mentioned naphthane is as organic solvent traditionally.The present inventor is through many times test, research and screening, prove add in right amount this component after, ultrahigh molecular weight polyethylene(UHMWPE) can be reduced greatly in the viscosity that adds man-hour, processing back mechanical performance of products is very superior, and particularly wear resistance and shock resistance are particularly outstanding.It is one of principal character of the present invention.The present inventor claims that this component is a viscosity-depression agent, and this is not have in the prior art.Its consumption is little, and it is not obvious to reduce viscosity, if amount too much, then the product mechanical property descends.Its mechanism of action is explored, and tentatively thinks relevant with swelling.
Low molecular weight polyethylene promptly is commonly referred to macromolecule wax and the amides lubricant is used, and is the usefulness as flow ability modifying agent.As for silicon-dioxide and aluminium sesquioxide, generally be as filler, inventor's test of many times, after adopting nano level two to change silicon or aluminium sesquioxide, physical strength with tangible raising goods, this is because its adding reduces the crystalline volume, increases the structure cell number, the mechanical property that improves goods with above-mentioned viscosity-depression agent and flow ability modifying agent synergy.Experimental results show that silicon-dioxide as adding, the fracture tensile strength of product is 20MPa, if nanometer grade silica then can be up to more than the 30MPa.This also is one of feature of the present invention.
Advantage of the present invention is that ultrahigh molecular weight polyethylene(UHMWPE) can be processed various profiled materials with extrusion molding, as tubing, band, thereby than having improved efficient widely with traditional pushing and pressing processing.Key propertys such as wear resistance, shock resistance can compare favourably with the product performance of pushing method simultaneously.Next is to prepare simply, extrude easy to operate stablizing.
Following preference is described in detail the present invention, but does not mean that limitation of the present invention.
Example 1: in one the 200 liters multimixers that have a stirring, add molecular weight successively and be 100 kilograms of 2,000,000-2,500,000 polyvinyl resins, 3 kilograms of naphthane, 3 kilograms of low molecular weight polyethylenes, 3 kilograms of the TS-A2 amides lubricating oil of the Jiangsu photochemical factory of state, 2 kilograms of nanometer grade silicas, be warmed up to 60 ± 5 ℃, kept 10 minutes group's saccharoid.Extrude at general single screw extrusion machine, the control head temperature is 200 ± 5 ℃, extrudes diameter 200 wall thickness and be 10 millimeters pipe, and its mechanical property is listed in table 1 after measured.
Example 2: the molecular weight that removes ultrahigh molecular weight polyethylene(UHMWPE) changes 350 ± 500,000 into, and the amount of naphthane changes 5 kilograms and replace outside the silicon-dioxide with aluminium sesquioxide into, and all the other conditions are identical with example 1, the pipe that makes, and its mechanical property is also listed in table 1.
Table 1 extruding pipe of the present invention and traditional pure ultra-high molecular mass polyethylene pushing method mechanical performance of products comparison sheet
| Performance index | Test method | Example 1 | Example 2 | Pure ultra-high molecular mass polyethylene |
| Melt index (g/10min) fracture tensile strength (MPa) modulus in tension (MPa) shock strength (breach, kgcm/cm) cantilever beam impact strength (KJ/m) abrasion (cm 3/ 1.61Km) Vicat softening point (0 ℃) | ????GB3682-83 ????GB/T1040-92 ????GB/T1040-92 ????GB/T1043-93 ????GB1843-89 ????GB3960-93 ????GB1633-79 | 〉=0.05 25-30 140-700 145-150 continuous 0.003 130 | 〉=0.05 25-28 150-1700 150-152 continuous 0.002 132 | 0 〉=30 〉=500＞150 continuous 0.004＞130 |
From above-mentioned data ultrahigh molecular weight polyethylene(UHMWPE) can be described, adopt prescription of the present invention can carry out extrusion molding production, for large-scale industrial production provides condition.
Claims (1)
1. ultra-high molecular weight polyvinyl composite that available extrusion molding is processed is characterized in that: (A) prescription, in weight part:
Ultrahigh molecular weight polyethylene(UHMWPE), molecular weight are 100-500 10,000
Naphthane 3-5
Low molecular weight polyethylene, molecular weight are 1000-20000 2-5
The amides lubricant, the photochemical factory of Jiangsu state, TS-A2 2-5
Nanometer grade silica or aluminium sesquioxide 1-3
(B) method for making: in the multimixer that band stirs, add ultrahigh molecular weight polyethylene(UHMWPE), naphthane, low molecular weight polyethylene, amides lubricant and nanometer grade silica successively or aluminium sesquioxide is warmed up to 60 ± 5 ℃ by said ratio, stirred 5-10 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99119536 CN1245179A (en) | 1999-09-02 | 1999-09-02 | Superhigh-molecular polyethylene composition able to be processed by extruding-out method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99119536 CN1245179A (en) | 1999-09-02 | 1999-09-02 | Superhigh-molecular polyethylene composition able to be processed by extruding-out method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1245179A true CN1245179A (en) | 2000-02-23 |
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| CN 99119536 Pending CN1245179A (en) | 1999-09-02 | 1999-09-02 | Superhigh-molecular polyethylene composition able to be processed by extruding-out method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100335550C (en) * | 2004-12-24 | 2007-09-05 | 上海化工研究院 | Method for preparing Nano composite material of polyethylene in super high molecular weight |
| CN101693402B (en) * | 2009-10-19 | 2012-07-25 | 江苏联冠科技发展有限公司 | Production method of ultra-high molecular weight polyethylene products |
| CN104530525A (en) * | 2014-12-19 | 2015-04-22 | 广东特固力士工业皮带有限公司 | Fibreless-core multi-wedge belt and preparation method thereof |
| CN104592612A (en) * | 2014-12-19 | 2015-05-06 | 广东特固力士工业皮带有限公司 | Fiber-core-free synchronous belt and preparation method thereof |
-
1999
- 1999-09-02 CN CN 99119536 patent/CN1245179A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100335550C (en) * | 2004-12-24 | 2007-09-05 | 上海化工研究院 | Method for preparing Nano composite material of polyethylene in super high molecular weight |
| CN101693402B (en) * | 2009-10-19 | 2012-07-25 | 江苏联冠科技发展有限公司 | Production method of ultra-high molecular weight polyethylene products |
| CN104530525A (en) * | 2014-12-19 | 2015-04-22 | 广东特固力士工业皮带有限公司 | Fibreless-core multi-wedge belt and preparation method thereof |
| CN104592612A (en) * | 2014-12-19 | 2015-05-06 | 广东特固力士工业皮带有限公司 | Fiber-core-free synchronous belt and preparation method thereof |
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