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Half dullspon slices of caprone and production method

A production method and semi-dull technology, applied in the direction of single-component polyamide artificial filaments, etc., can solve problems such as poor product quality, fluctuations in the molecular weight of nylon chips, and difficulties in meeting the requirements of high-speed spinning filament spinning, etc.

Inactive Publication Date: 2007-10-10
沈有清
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low content of acetic acid, it will lead to the fluctuation of molecular weight in nylon chips, which makes the product quality poor and difficult to meet the spinning requirements of high-speed spinning filaments
And because the matting agent in traditional nylon chips is mixed with titanium dioxide and water, filtered and used directly, the larger particles in it will affect the quality of nylon chips, so the use of this matting agent will also reduce the quality of nylon chips

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 2 example

[0026] First select 98 parts of caprolactam, 0.25 parts of matting agent, 0.25 parts of adipic acid and 2.1 parts of initiator for use. Wherein the parts of each raw material are parts by weight. Said initiator is deionized water. Said matting agent is to put together titanium dioxide, deionized water, sodium hexametaphosphate and caprolactam according to the ratio of titanium dioxide: deionized water: sodium hexametaphosphate: caprolactam = 1: 5: 0.0002: 0.375 through uniform mixing, dissolving, After precipitation, it is made by removing the precipitate.

[0027] Then, put caprolactam, matting agent, adipic acid and initiator into a melting pot with a temperature of 88° C., and while filling with nitrogen protection, stir evenly with a stirrer for 1 hour to prepare a mixed solution.

[0028] Afterwards, the above-mentioned mixed solution was pumped into the polymerization device with a metering pump, and polymerized at a temperature of 270° C. for 21 hours to obtain a melt...

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PUM

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Abstract

This invention discloses a method for producing semi-dull polyamide fiber slices. The raw materials comprise: hexanolactam 95-100 parts, extinction agent 0.2-0.3 part, adipic acid 0.2-0.3 part, and initiator 1.8-2.4 parts. The method comprises: mixing the above raw materials, polymerizing, slicing in water, extracting and drying. The obtained semi-dull polyamide fiber slices have high quality, and can satisfy the requirement for high-speed spinning into long filaments.

Description

technical field [0001] The invention relates to a spinning raw material. Specifically, it is a nylon 6 semi-dull chip used for high-speed spinning filaments and a production method thereof. Background technique [0002] At present, most of the nylon chips used for high-speed spinning filaments in the chemical fiber spinning industry are composed of caprolactam, matting agent, acetic acid and initiator and other raw materials. The acetic acid in it has a low volatilization temperature and will volatilize at a temperature of 118°C. The polymerization reaction temperature of nylon chips is about 270°C. At such a temperature, acetic acid is easy to volatilize, so that the content of acetic acid in nylon chips is low. Due to the low content of acetic acid, it will lead to the fluctuation of the molecular weight in the nylon chips, which makes the product quality poor, and it is difficult to meet the spinning requirements of high-speed spinning filaments. And because the mattin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/14C08G69/16D01F6/60
Inventor 沈有清王国新黄伟忠
Owner 沈有清