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Aramid fiber dispersion liquid and dispersion method and static sealing material of aramid fiber

A technology of aramid fiber and dispersion liquid, which is applied in the field of aramid fiber, can solve the problems that the dispersion effect of aramid fiber dispersion liquid needs to be improved, achieve good adsorption and suspension characteristics, prevent curling and bending, and reduce surface tension.

Active Publication Date: 2013-06-12
廊坊佰昂密封材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dispersion effect of the aramid fiber dispersion obtained by using the above-mentioned auxiliary agent to disperse still needs to be improved.

Method used

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  • Aramid fiber dispersion liquid and dispersion method and static sealing material of aramid fiber

Examples

Experimental program
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Effect test

Embodiment 1

[0088] Dissolving the silicone surfactant and polyethylene oxide in xylene by stirring to obtain a mixed solution of the silicone surfactant and polyethylene oxide, wherein the silicone surfactant has a structure of formula (II), and the organic The mass concentration of silicon surfactant and polyethylene oxide is 0.1%, and the mass ratio of the two is 10%:90%;

[0089] [(CH 3 ) 3 N) 2 Si(CH 3 ) 2 ]Cl(II);

[0090] The mixed solution of silicone surfactant and polyethylene oxide is placed in an oiling machine, and under the conveyance of a constant pressure pump, the aramid fiber traveling on the production line is immersed online, and the traveling speed of the aramid fiber is 12m / min. Aramid fiber dispersion liquid was obtained.

[0091] Dry the fluororubber at 60°C for 24 hours.

[0092] 32wt% of dried fluorine rubber, 24wt% of aramid fiber dispersion, 33wt% of mica powder, 5wt% of modifier TSC30, 1.5wt% of sulfur, 1.6wt% of zinc oxide, 1.4wt% of Antiaging agent 40...

Embodiment 2

[0104] Dissolving the silicone surfactant and polyethylene oxide in xylene by stirring to obtain a mixed solution of the silicone surfactant and polyethylene oxide, wherein the silicone surfactant has a structure of formula (III), and the organic The mass concentration of silicon surfactant and polyethylene oxide is 1%, and the mass ratio of the two is 30%:70%;

[0105] [(CH 3 ) 3 N) 2 Si(CH 3 ) 2 ]Br(III);

[0106] The mixed solution of the silicone surfactant and polyethylene oxide is placed in an oiling machine, and under the delivery of a constant pressure pump, the aramid fiber traveling on the production line is immersed online, and the traveling speed of the aramid fiber is 20m / min. Aramid fiber dispersion liquid was obtained.

[0107] Dry the nitrile rubber at 50°C for 30 hours.

[0108] With 32wt% dried nitrile rubber, 25wt% aramid fiber dispersion, 30wt% white carbon black, 3wt% clay, 4wt% modifier TSC30, 1.6wt% sulfur, 1.6wt% Zinc oxide, 1.4wt% anti-aging ag...

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Abstract

The invention provides an aramid fiber dispersion method and aramid fiber dispersion liquid. The dispersion method comprises the step of dispersing the aramid fiber in a dispersion medium to obtain the aramid fiber dispersion liquid; the dispersion medium is a mixed solution or dispersion liquid of organosilicon surfactant and polyoxyethylene, the organosilicon surfactant has a structure expressed by formula (I), wherein n is 1, 2 or 3; R and R1 are independently selected from alkyl with carbon atom number of 1-5; and X refers to a halide ion. According to the invention, the organosilicon surfactant is compounded with the polyoxyethylene to disperse the aramid fiber to obtain a better dispersion effect, so that the application in the field of composite materials is more extensive. The invention further provides a static sealing material, and the aramid fiber dispersion liquid is adopted to improve such performances of the static sealing material as mechanical property and sealing property, etc. [(R3N)nSiR14-n]X (I).

Description

technical field [0001] The invention relates to the technical field of aramid fiber, in particular to an aramid fiber dispersion liquid, a method for dispersing the aramid fiber and a static sealing material. Background technique [0002] Aramid fiber is an aromatic polyamide fiber, which is a synthetic fiber first developed by DuPont in the United States in the 1960s and 1970s. The benzene ring of the aramid fiber connects the amide group to form a rod-shaped rigid macromolecular chain structure, which has a high structural integrity and a high glass transition temperature. It has no obvious shrinkage and creep at 200 ° C, and is thermally stable at 500 ° C. It is still very resistant, and it also has excellent corrosion resistance to chemicals such as acids, alkalis and organic solvents. Therefore, the use of aramid fibers has created a new era of high-strength, high-modulus and high-temperature-resistant fibers. Aramid fibers are widely used in aerospace, rubber, resin i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/10C08J3/09C08J3/03C08L27/12C08L9/02C09K3/10C08J5/06
Inventor 梁永久刘永然董德文冯美兰
Owner 廊坊佰昂密封材料有限公司
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