A kind of para-aramid fiber and its preparation method and its application in the preparation of molten metal splash protective clothing

A technology of para-aramid fiber and poly(p-phenylene terephthalamide), which is applied in the directions of fiber chemical characteristics, wet spinning, textiles and papermaking, etc., can solve the problem of poor smoothness and easy adhesion of aramid fibers. and other problems, to achieve the effect of perfect fiber surface, reducing casualties and high density

Active Publication Date: 2021-09-17
YANTAI TAYHO ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the disadvantages of the above-mentioned prior art that the smoothness of the para-aramid fiber is poor, which leads to the shortcoming that it is prone to sticking when it encounters a high-temperature metal liquid, and provides a para-aramid fiber and a preparation method thereof and application in the preparation of molten metal splash protective clothing

Method used

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  • A kind of para-aramid fiber and its preparation method and its application in the preparation of molten metal splash protective clothing
  • A kind of para-aramid fiber and its preparation method and its application in the preparation of molten metal splash protective clothing
  • A kind of para-aramid fiber and its preparation method and its application in the preparation of molten metal splash protective clothing

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A preparation method of para-aramid fibers, comprising the steps of:

[0040] Using N-methylpyrrolidone as a solvent, dissolve p-phenylenediamine into N-methylpyrrolidone, and then add terephthaloyl chloride, wherein the molar ratio of p-phenylenediamine to terephthaloyl chloride is 1:1 , dissolve and react for 50 minutes to obtain a mixed solution, then add triphenylmethane triisocyanate to the mixed solution, the amount of triphenylmethane triisocyanate added is 0.5% of the total mass of the mixed solution, and then polycondense at -10 to 10°C After reacting for 5 minutes, a poly-p-phenylene terephthalamide polymer raw material with an intrinsic viscosity of 6.5-7.5 dL / g was obtained.

[0041] (1) Add the poly-p-phenylene terephthalamide polymer raw material with an intrinsic viscosity of 6.5-7.5dL / g into concentrated sulfuric acid with a concentration of 99-101% and mix evenly, and control the temperature at 80-90°C after stirring. ℃, to prepare a mixed solution wit...

Embodiment 2

[0045] The amount of triphenylmethane triisocyanate added is 1% of the total mass of p-phenylenediamine, N-methylpyrrolidone and terephthaloyl chloride, and the remaining contents are the same as in Example 1.

Embodiment 3

[0047] The addition amount of triphenylmethane triisocyanate is 1.5% of the total mass of p-phenylenediamine, N-methylpyrrolidone and terephthaloyl chloride, and the remaining contents are the same as in Example 1.

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Abstract

The invention discloses a para-aramid fiber, a preparation method thereof, and an application in preparing molten metal splash protective clothing, and belongs to the field of aramid fiber and a preparation method thereof. Para-aramid short fibers suitable for industrial production of molten metal splash protection are prepared by high-pressure transfer and extrusion, fine-hole spinneret, and low-temperature coagulation bath. The high-pressure conveying and extrusion above 10MP improves the compactness of the fiber, the spinneret holes under high pressure and below 0.060mm increase the surface compactness and surface smoothness, and the finer single-filament fineness reduces the pores produced by volatilization of sulfuric acid, making the fiber surface More perfect for better anti-adsorption of molten metal spatter. The molten metal splash protection fabric based on this has good high temperature resistance, surface compactness, and flame retardancy, and can make molten metal slip off the surface quickly without burning, reducing casualties.

Description

technical field [0001] The invention belongs to the field of aramid fiber and its preparation method, and relates to a para-aramid fiber, its preparation method and its application in the preparation of molten metal splash protective clothing. Background technique [0002] The process of smelting, processing and production is relatively complicated, and there are many hazards in the whole production process, including smoke, noise, high temperature radiation, splashing of molten metal and slag, blast furnace gas, combustion explosion of blast furnace gas, coal powder explosion, etc. According to the statistics of accidents over the years, among them, there are the most burning accidents, which are manifested as burns on the human body caused by the overturning and falling of high-temperature metal liquid, radiant heat of high-temperature metal liquid, splashing and leakage of molten metal; traditional personal protective equipment mostly uses wool, flame-retardant Viscose, n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D02G3/04D02G3/44D01D5/06D01D4/02D01F6/80C08G69/32C08G69/28
CPCC08G69/28C08G69/32D01D4/02D01D5/06D01F6/805D02G3/047D02G3/443D10B2201/24D10B2211/02D10B2331/021D10B2501/04
Inventor 马千里杨文华高殿飞张盼盼杜志林毕景中
Owner YANTAI TAYHO ADVANCED MATERIALS CO LTD
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