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Para-aramid fiber, preparation method thereof and application of para-aramid fiber in preparation of molten metal splashing protective clothing

A para-aramid fiber and clothing technology, applied in fiber chemical characteristics, wet spinning, textiles and papermaking, etc., can solve the problems of poor smoothness and easy adhesion of aramid fiber, achieve perfect fiber surface, reduce Casualties, the effect of good high temperature resistance

Active Publication Date: 2021-03-09
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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  • Para-aramid fiber, preparation method thereof and application of para-aramid fiber in preparation of molten metal splashing protective clothing
  • Para-aramid fiber, preparation method thereof and application of para-aramid fiber in preparation of molten metal splashing protective clothing
  • Para-aramid fiber, preparation method thereof and application of para-aramid fiber in preparation of molten metal splashing protective clothing

Examples

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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 application of the para-aramid fiber in preparation of molten metal splashing protective clothing, and belongs to the field of aramid fibers and preparation methods thereof. The para-aramid staple fibers suitable for industrial production and used for molten metal splashing protection are prepared by adopting high-pressure conveying and extrusion, a fine-pore spinneret plate and a low-temperature coagulating bath process. The compactness of the fibers is improved through high-pressure conveying and extrusion of 10 MPor above, the surface compactness and the surface smoothness are improved through high pressure and spinneret holes with the diameter of 0.060 mm or below, air holes generated by volatilization of sulfuric acid are reduced through the finer filament number, the surfaces of the fibers are more perfect, and the fibers have better molten metal splash adsorption resistance. A molten metal splashing protective fabric prepared on the basis of the fibers has good high temperature resistance, surface compactness and flame retardance, molten metal can quickly slip off from the surface without combustion, and casualties are reduced.

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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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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