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Method of preparing polythene fibre with high surface adhesion ultra-high relative molecular mass

A relative molecular weight, polyethylene fiber technology, applied in the direction of single-component polyolefin artificial filaments, etc., can solve the problems of fiber strength decline, high vacuum, fiber super-stretchability, etc., to achieve strength retention and high surface activity , Improve the effect of surface bonding performance

Active Publication Date: 2011-01-12
DONGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] CN1035308A discloses a method for improving the surface bonding performance of ultra-high molecular weight polyethylene fibers. It is to carry out plasma treatment on the surface of ultra-high molecular weight polyethylene fibers. This method can effectively improve the wetting of the fibers to the resin matrix properties and surface bonding strength, but this treatment method requires a high vacuum, and it is difficult to realize continuous industrial production. In addition, the attenuation rate of the active functional groups on the surface of the fiber after treatment is relatively large
However, in this process, since the polar polymer is dispersed in the composite extractant at the molecular level, it is easily absorbed into the interior of the jelly fiber during extraction, which will inevitably have a certain impact on the superstretchability of the fiber.
[0010] In addition to the above-mentioned post-treatment methods, Jia Guangxia and others also explored blending and modification in "Research on the Adhesiveness of Ultra-high Molecular Mass Polyethylene Fibers" (Synthetic Fiber Industry, 1995, (6): 24-28). The method is to mix a certain proportion of ethylene-vinyl acetate copolymer (EVA) into the spinning stock solution, and then spin and stretch to obtain ultra-high molecular weight polyethylene fibers with improved surface bonding properties, but The strength of the fiber produced by this method decreases significantly

Method used

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  • Method of preparing polythene fibre with high surface adhesion ultra-high relative molecular mass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The ultra-high molecular weight polyethylene fiber jelly fiber is subjected to multi-channel ultrasonic extraction in xylene, the solvent in the fiber is removed, and then dried and super-stretched 38 times to obtain ultra-high molecular weight polyethylene fiber. vinyl fibers.

Embodiment 2

[0030] Mix silicon oxide particles with an average particle size of 30 nanometers modified by surface organic treatment with xylene at a ratio of 0.5:100, and obtain a composite extraction emulsion in which nanoparticles are uniformly dispersed by ultrasonic dispersion. After multi-channel ultrasonic extraction of xylene, ultra-high molecular weight polyethylene fiber jelly fibers with a solvent content of about 2% were subjected to ultrasonic extraction for 1 min at 30°C in a composite extraction emulsion, and then dried and super-doubled. Stretch 38 times to produce ultra-high molecular weight polyethylene fibers.

Embodiment 3

[0032] Mix calcium carbonate particles with an average particle size of 50 nanometers modified by surface organic treatment with dichloromethane at a ratio of 1:100, and prepare a composite extraction emulsion with uniformly dispersed nanoparticles through a homogenizer and colloid mill. After multi-channel ultrasonic extraction with dichloromethane, the ultra-high molecular weight polyethylene fiber jelly fiber with a solvent content of about 8% was subjected to ultrasonic extraction for 0.5 min at 25°C in a composite extraction emulsion, and then dried and ultra-sonic. After stretching 38 times, ultra-high molecular weight polyethylene fibers are obtained.

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Abstract

The invention relates to a preparing method for polythene fiber with high surface adhesive and super high relative molecular mass, which comprises such procedures as: (1) mixing some inorganic nanometer particles or nanometer crystal whiskers having gone through organic modification with some extractant, dispersing them evenly, so as to prepare compound extracting emulsion; (2) extracting the polythene fiber with super high relative molecular mass and with solvent removed, placing the polythene fiber in the extracting emulsion for extracting, drying and tensioning, then polythene fiber with high surface adhesive and super high relative molecular mass is obtained. At the shallow surface of the prepared polythene fiber with super high relative molecular mass, nanometer particles or nanometer crystal whiskers are adhered, the polythene fiber has high surface adhesive property, and can maintain to the max. extent the original strength of the fiber. The method is easy to operate, of low preparing cost, and is easy for industrial implementation.

Description

technical field [0001] The invention belongs to a preparation method of ultra-high relative molecular weight polyethylene fibers, in particular to a preparation method of high surface adhesive ultra-high relative molecular weight polyethylene fibers. Background technique [0002] Ultra-high molecular weight polyethylene fibers have ultra-high strength and modulus, high energy absorption, impact resistance, low temperature resistance, electrical insulation, excellent chemical resistance, weather resistance, x-ray and Certain water resistance and other excellent properties are widely used in military, aerospace and navigation engineering, leisure sporting goods and high-performance, lightweight composite materials and other fields, such as bulletproof protective materials (armor plates, bulletproof clothing, shields, helmets, stab-proof or cut-resistant gloves, etc.), high-strength ropes (cables, parachute ropes, climbing ropes, etc.), composite materials (sonar domes, radome,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/04D01F1/10
Inventor 于俊荣胡祖明潘婉莲陈蕾诸静
Owner DONGHUA UNIV