Heat-resisting creep-resisting ultra-high molecular weight polyethylene constant-strength fiber and preparation method thereof

An ultra-high molecular weight, creep-resistant technology, applied in the field of fiber production, can solve the problems of poor fiber mechanical properties and low fiber draw ratio

Inactive Publication Date: 2015-06-10
JIANGSU SHENTAI SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this method, a large amount of initiator and grafting compound are added to the UHMWPE spinning dope and stretched after the grafting reaction is completed, so that the fiber draw ratio is low, and the mechanical properties of the final fiber are poor.

Method used

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  • Heat-resisting creep-resisting ultra-high molecular weight polyethylene constant-strength fiber and preparation method thereof
  • Heat-resisting creep-resisting ultra-high molecular weight polyethylene constant-strength fiber and preparation method thereof
  • Heat-resisting creep-resisting ultra-high molecular weight polyethylene constant-strength fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 7 parts by weight of ultra-high molecular weight polyethylene powder (Gur 4022 of Ticona Company, the molecular weight range is 5 million), 0.26 parts by weight of antioxidant 2,6-di-tert-butylphenol and 83 parts by weight of volatile solvent decahydronaphthalene, in Swell at 90°C for 4 hours to form a fully swollen ultra-high molecular weight polyethylene suspension A; then take 10 parts by weight of the volatile solvent decahydronaphthalene, and use a high-speed stirrer to stir at a speed of 1000 rpm, while stirring Add 0.33 parts by weight of crosslinking agent 2-ethyl methacrylate and diamine (4:3 ratio), 0.2 parts by weight of initiator azobisisobutyronitrile, 0.62 parts by weight of graphene and 0.85 parts by weight of curing Add maleic anhydride, stir for 10 minutes and mix evenly to obtain solution B, add solution B to solution A, mix evenly, extrude and spin through the screw, then evaporate or volatilize the solvent in the fiber under the protection of nitrogen...

Embodiment 2

[0045] 8 parts by weight of ultra-high molecular weight polyethylene powder (Gur 4022 from Ticona, with a molecular weight range of 5 million), 0.32 parts by weight of antioxidant 2, 4, 6-tri-tert-butylphenol and 83 parts by weight of volatile solvent tetralin , swell at 90°C for 4 hours to form a fully swollen ultra-high molecular weight polyethylene suspension A; then take 10 parts by weight of the volatile solvent tetralin, and use a high-speed stirrer to stir at a speed of 1200 rpm, while Stir and add 1.26 parts by weight of crosslinking agent p-toluenesulfonyl isocyanate, 0.18 parts by weight of initiator dibenzoyl peroxide and azobisisobutyronitrile (1:2 ratio), 0.15 parts by weight of graphene and 0.35 parts by weight Parts by weight of curing agent phthalic anhydride, stirred for 30 minutes and mixed uniformly to obtain solution B, added solution B to solution A, mixed uniformly, extruded and spun by a screw, and then evaporated or volatilized under the protection of ni...

Embodiment 3

[0049] 7 parts by weight of ultra-high molecular weight polyethylene powder (Gur 4022 of Ticona Company, the molecular weight range is 4 million), antioxidant 4, 4'-thiobis(6-tert-butyl-3-methylphenol) 0.3 Parts by weight and 85 parts by weight of the volatile solvent xylene, swelled at 90°C for 4 hours to form a fully swollen ultra-high molecular weight polyethylene suspension A; then take 10 parts by weight of the volatile solvent xylene, using a high-speed stirrer, Stir at a speed of 1500 rev / min, while stirring, add the crosslinking agent ethoxylated trimethylolpropane triacrylate of 0.76 parts by weight, the initiator benzophenone of 0.21 parts by weight, the graphene of 0.4 parts by weight and 0.39 parts by weight Parts by weight of curing agent p-phenylenediamine, stirred for 30 minutes and mixed uniformly to obtain solution B, added solution B to solution A, mixed uniformly, passed through screw extrusion spinning, and then evaporated or volatilized to remove fibers und...

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Abstract

The invention discloses a heat-resisting creep-resisting ultra-high molecular weight polyethylene constant-strength fiber. The fiber comprises ultra-high molecular weight polyethylene powder, graphene, a cross-linking agent, a curing agent, an initiator and an anti-oxidant. The preparation method comprises the following steps: swelling the ultra-high molecular weight polyethylene powder by a solvent so as to form pores; then adding a composite modifying agent wetted by the cross-linking agent, the curing agent, the initiator, the anti-oxidant, the graphene and the solvent together; penetrating the composite modifying agent evenly into the ultra-high molecular weight polyethylene powder pores, and mixing evenly; and finally, carrying out irradiation crosslinking to obtain the heat-resisting creep-resisting ultra-high molecular weight polyethylene constant-strength fiber. The heat-resisting creep-resisting ultra-high molecular weight polyethylene constant-strength fiber has the comprehensive performances of heat resistance, creep resistance, abrasion resistance, impact resistance, self lubrication, corrosion resistance, low temperature resistance, hygiene, no toxicity, difficulty in adhesion and water absorption and relatively low density, is wide in applicability, and is long in service life.

Description

technical field [0001] The invention belongs to the technical field of fiber production, and in particular relates to a heat-resistant and creep-resistant ultra-high molecular weight polyethylene constant-strength fiber and a preparation method thereof. Background technique [0002] UHMWPE fiber (ultra-high molecular weight polyethylene fiber) is the third generation of high-performance fiber after carbon fiber and aramid fiber. It has many excellent properties such as chemical resistance and weather resistance, high energy absorption, low temperature resistance and electrical insulation. , is widely used in military, aerospace and navigation engineering, high-performance, lightweight composite materials and sports equipment, etc., to produce such as ropes, nets, medical equipment, fabrics, laminates, composite products and bulletproof products. [0003] But UHMWPE fibers have a disadvantage which is an obstacle to their optimal utilization in long-term applications, whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/46D01F1/10
Inventor 郭子贤王新鹏张竹标项朝阳何勇
Owner JIANGSU SHENTAI SCI & TECH DEV
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