Aramid fiber (AF) surface modification method, product and preparation method of product

A surface modification, aramid fiber technology, applied in textiles and papermaking, light/infrared/X-ray fiber processing, fiber processing, etc., can solve the problems of fast reaction speed, difficult to control, difficult continuous production, and difficult to industrialize production, etc. To achieve the effect of enhanced mechanical bite, increased roughness, and improved surface properties

Inactive Publication Date: 2016-10-05
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The effect of chemical treatment on the surface of aramid fibers is remarkable, but it is difficult to realize industrial production due to the fast reaction speed, difficulty in controlling, difficulty in continuous production, and easy pollution to the environment.

Method used

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  • Aramid fiber (AF) surface modification method, product and preparation method of product

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Effect test

Embodiment 1

[0011] Embodiment 1 of the present invention: a method for surface modification of aramid fibers, placing aramid fiber bundles in a beaker, soaking them in acetone, cleaning them in an ultrasonic cleaner for 4 hours, removing impurities attached to the surface, and then heating them at 80°C After drying, the aramid fibers are cut into 5mm long short fibers, sealed for later use.

[0012] Add 3 parts of aramid fiber and 50 parts of natural rubber into a rubber-plastic internal mixer (XSM-05, Shanghai Kechuang Rubber and Plastic Machinery Equipment Co., Ltd.) to make a master batch; then add 50 parts of natural rubber, master batch, 5 parts of zinc oxide, 4 parts of stearic acid, 1.5 parts of anti-aging agent 4020, 0.5 part of accelerator D, 2.21 parts of accelerator M, 1.97 parts of accelerator DM, 0.33 parts of accelerator TMTD and 1.71 parts of sulfur vulcanizing agent, add double Knead in a roller mill, knead for 10 minutes, and leave the sheet for 24 hours to eliminate inte...

Embodiment 2

[0013] Embodiment 2 of the present invention: a method for surface modification of aramid fibers, placing aramid fiber bundles in a beaker, soaking them in acetone, cleaning them in an ultrasonic cleaner for 4 hours, removing impurities attached to the surface, and then heating them at 80°C Drying, laying the dried aramid fibers into a layer, using a UV lamp with a wavelength of 264nm and a power of 800W to irradiate at a distance of 20cm from the aramid fiber, under normal temperature and pressure conditions, the radiation time is 4 minutes, and then cut the aramid fiber into short fibers with a length of 5 mm to obtain a modified aramid fiber, which is sealed for later use.

[0014] Add 3 parts of modified aramid fiber and 50 parts of natural rubber into a rubber-plastic internal mixer (XSM-05, Shanghai Kechuang Rubber and Plastic Machinery Equipment Co., Ltd.) to make a master batch; then add 50 parts of natural rubber, master batch , 5 parts of zinc oxide, 4 parts of stear...

Embodiment 3

[0015] Embodiment 3 of the present invention: the surface modification method of aramid fiber, place the aramid fiber bundle in a beaker, soak it with acetone, put it in an ultrasonic cleaner for cleaning for 4 hours, remove the impurities attached to its surface, and then heat it at 80°C Drying, laying the dried aramid fibers into a layer, using a UV lamp with a wavelength of 264nm and a power of 1000W, irradiating at a distance of 20cm from the aramid fiber, under normal temperature and pressure conditions, the radiation time is 8 minutes, and then cut the aramid fibers into short fibers with a length of 5 mm to obtain modified aramid fibers, which are sealed for later use.

[0016] Add 3 parts of modified aramid fiber and 50 parts of natural rubber into a rubber-plastic internal mixer (XSM-05, Shanghai Kechuang Rubber and Plastic Machinery Equipment Co., Ltd.) to make a master batch; then add 50 parts of natural rubber, master batch , 5 parts of zinc oxide, 4 parts of stear...

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Abstract

The invention discloses a method for modifying the surface of an aramid fiber, a product thereof and a preparation method of the product. The present invention uses ultraviolet light as the radiation source to irradiate aramid fibers in the air to improve the surface properties of aramid fibers, thereby increasing the interface bonding strength between aramid fibers and natural rubber, and maximizing the use of aramid fibers. Reinforcement effect; radiation modification can stimulate the activity of functional groups on the surface of aramid fibers, and these active functional groups can physically cross-link or chemically react with the natural rubber matrix, thereby increasing interfacial adhesion; and radiation modification can also affect the aramid fibers The surface is etched to increase the roughness of the surface of the aramid fiber, thereby increasing the surface area of ​​the fiber, enhancing the mechanical interlocking of the aramid fiber and natural rubber, and increasing the interface bonding strength between the two. The invention has the advantages of safety, high efficiency, little pollution, low energy consumption, simple equipment and suitable for industrial production, etc., and has good development prospects in the modification of aramid fibers. The preparation method of the invention has simple process and easy operation, and is very suitable for industrial production.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a method for modifying the surface of aramid fibers and a method for preparing products thereof. Background technique [0002] Aramid fiber (AF) is a linear polymer fiber composed of benzene rings introduced into the polyamide main chain. Has high tensile strength, high tensile modulus; good fatigue resistance, chemical resistance and dimensional stability. And it has excellent thermal properties such as high heat resistance, low expansion, low thermal conductivity, non-flammable, insoluble, and excellent dielectric properties. Its strength can reach 6 times that of steel wire, its modulus is 3 times that of steel wire, its toughness is 2 times that of steel wire, and its weight is only 1 / 5 of that of steel wire. However, due to the steric hindrance effect of the benzene ring in the aramid fiber and the high degree of crystallization along the axial orientation, the amide group...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M10/00C08L7/00C08L77/10C08K13/02C08K3/22C08K5/09
CPCD06M10/001C08L7/00C08L2205/16D06M2101/36
Inventor 熊玉竹戴骏崔凌峰李鑫
Owner GUIZHOU UNIV
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