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Olefin polymer and blend fiber and preparation methods and applications thereof

An olefin polymer and blended fiber technology, applied in the field of olefin polymers, can solve the problems of weak strength of wet frozen collagen filament, poor spinnability and poor uniformity of ultra-high molecular weight polyethylene, and achieve the effect of good spinnability

Inactive Publication Date: 2011-04-20
ZANNAN SCITECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the above-mentioned shortcomings in processing technology such as poor spinnability of the existing ultra-high molecular weight polyethylene, weak strength and poor uniformity of wet frozen collagen filaments, and provide a new Olefin polymer suitable for preparing special fibers and preparation method thereof

Method used

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  • Olefin polymer and blend fiber and preparation methods and applications thereof
  • Olefin polymer and blend fiber and preparation methods and applications thereof
  • Olefin polymer and blend fiber and preparation methods and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] The preparation of embodiment 1 olefin polymer

[0073]

[0074] The liquid reactants cycloheptene (10 g) and n-heptane solvent (150 mL) were added into a 250 mL three-necked flask filled with argon, and after argon replacement and oxygen removal, Jane's catalyst (compound 2) (2 mg) was added. After 5 minutes, the reaction liquid became viscous, and the reaction temperature was controlled at 30° C., and the reaction time was 12 hours. After the polymerization reaction, the reaction solution was slowly introduced into rapidly stirred acetone for precipitation, and a large amount of white flocculent solids were produced. After the product was filtered and washed for 1-2 times, it was dried in a vacuum oven to obtain 8.9g of white solid macromolecular olefin polymer (15a). After dissolving with toluene, its viscosity was measured to be 0.57, and the weight-average molecular weight was 550,000 (n was about 5730 ), yield 89%.

[0075] After testing, the olefin polymer (...

Embodiment 2

[0077] The preparation of embodiment 2 olefin polymers

[0078]

[0079] The liquid raw material cycloheptene (10g) was added in a 250mL three-necked flask filled with argon, and after passing through argon to replace and exhaust oxygen, 1,2-dichloroethane ( DCE) solution (0.1 mL). After 5 minutes, the reaction solution became viscous and exothermic. The reaction temperature was controlled at 30° C., and the reaction time was 12 hours. After the polymerization reaction is finished, add 150mL of toluene to dissolve, and slowly introduce the dissolved toluene reaction solution into rapidly stirring acetone for precipitation, producing a large amount of white flocculent solid. After the product was filtered and washed for 1-2 times, it was dried in a vacuum oven to obtain 9.2g of white solid macromolecular olefin polymer (15b), and its viscosity measured after dissolving with toluene was 1.53, and the weight average molecular weight was 1.48 million (n was about 15400 ), yie...

Embodiment 3

[0082] The preparation of embodiment 3 olefin polymers

[0083]

[0084]The liquid raw material cyclooctene (1.0kg) and toluene solvent (15L) were added into a 30L three-necked flask filled with argon, and a small amount of Jane's catalyst (compound 2) (2mg) was added after passing through argon to replace and exhaust oxygen. After 5 minutes, the reaction solution became viscous, and the reaction temperature should be controlled at 30°C. After the polymerization reaction, the reaction solution was slowly introduced into rapidly stirred acetone for precipitation, and a large amount of white flocculent solids were produced. After the product was filtered and washed for 1-2 times, it was dried in a vacuum oven to obtain 918g of white solid high molecular weight olefin polymer (17a). After dissolving with toluene, its viscosity was measured to be 0.26, and the weight average molecular weight was 230,000 (n was about 2090). , yield 91.8%.

[0085] After detection, the olefin p...

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Abstract

The invention provides an olefin polymer which is an olefin homopolymer composed of constitutional units displayed by a formula I or is an olefin random copolymer composed of constitutional units displayed by the formula I and a formula II, wherein m is equal to 0-8; m' is equal to 0-6; and m is not equal to m'+2. The number of the constitutional units of the formula I and the formula II are respectively 1,000-20,000 and 1,000-10,000. The invention also provides a blend fiber which contains ultrahigh molecular-weight polyethylene and olefin polymers. The invention also provides preparation methods and applications of the olefin polymer and the blend fiber. The blend fiber overcomes the defects of poor spinnability of the traditional ultrahigh molecular-weight polyethylene and low strength of frozen collagen silk and increases the tensile strength and the impact resistance of the fiber, and therefore the blend fiber with good high-strength high-modulus impact resistance performance and good uniformity is obtained.

Description

technical field [0001] The present invention relates to a kind of olefin polymer, its preparation method and application. The invention also relates to a kind of blended fiber, its preparation method and application. Background technique [0002] Ultra-high molecular weight polyethylene (UHMWPE) fiber is a high-strength and high-modulus organic fiber prepared by the gel spinning super-stretching technology first successfully developed by the Dutch DSM company in the 1980s. It is the third generation after carbon fiber and aramid fiber. High-performance fibers. The ultra-high molecular weight polyethylene used to make fibers has a molecular weight range of 1 million to 8 million. [0003] Ultra-high molecular weight polyethylene fiber has good mechanical properties, and also has excellent properties such as ultraviolet radiation resistance, chemical corrosion resistance, low dielectric constant, low friction coefficient, outstanding impact resistance, and cutting resistance...

Claims

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Application Information

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IPC IPC(8): C08F132/00C08F232/00D01F8/06A61L17/04
Inventor 詹正云
Owner ZANNAN SCITECH
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