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Short fiber of para-aromatic polyamide

An aromatic polyamide, short fiber technology, applied in fiber processing, textiles and papermaking, etc., can solve the problems of easy changes in adhesion over time, reduced operability, and winding.

Active Publication Date: 2009-09-09
TEIJIN LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, although ethoxylated alkyl phosphate salts are excellent in antistatic properties and friction reducing properties, there are problems in that the adhesiveness tends to change over time due to its hygroscopicity, and damage to each winding
In this way, if the spinning speed is increased, the following problems will be formed: the amount of fiber passing through the spinning machine will increase in proportion to the speed, so the floating color will increase, the cleaning cycle will be shortened, and the operability will be reduced. The main reason
However, none of these compounds are effective enough for aramid fibers, and further improvements are required.

Method used

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  • Short fiber of para-aromatic polyamide
  • Short fiber of para-aromatic polyamide

Examples

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Embodiment 1～5

[0045] Stretching at 1670dtex / 1000fil of para-position aromatic copolymer polyamide containing 25 mol% of p-phenylenediamine component, 25 mol% of 3,4'-diaminodiphenyl ether component and 50 mol% of terephthalic acid component On the yarn, the treatment agent of the composition listed in Table 1 is given by dipping (the phosphate ester salt in the treatment agent is potassium lauryl phosphate, and specific examples of other phosphate ester salts include alkali metal phosphate without adding alcohol, poly Phosphoric acid alkali metal salts and phosphate alkali metal salts added with three or more alcohols, etc.) to achieve the adhesion amount described in Table 1, and then press crimping at a preheating temperature of 95°C, and then carry out crimping at 105°C After drying, it was cut into 51 mm to obtain 100 kg of para-aramid staple fibers with a crimp number of 11.0 pieces / 25 mm and a crimp ratio of 13.5%. These short fibers are passed through a single hand cleaner to form la...

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Abstract

By attaching 0.05 to 1.0% by weight of the monoester salt mole fraction of 45 to 70 mol% and the diester salt mole fraction of 10 to 40 mol% relative to the weight of the fiber on the para-aramid short fiber, Phosphate alkali metal salt of an alcohol having 12 carbon atoms, thereby obtaining a spinnable fabric with excellent bundling properties and antistatic properties, low adhesion, less entanglement with rolls, etc., and less floating color. Para-aramid staple fiber with excellent properties.

Description

technical field [0001] The present invention relates to para-aramid short fibers excellent in spinnability. In more detail, the present invention relates to excellent fiber converging and antistatic properties in the spinning process, less occurrence of entanglement and floating on rollers and the like in the spinning process, and excellent lubricity under extreme pressure friction , so it is possible to stably manufacture high-quality aramid 100% spun yarn or para-aramid staple fiber blended with other fibers. Background technique [0002] Para-oriented para-aramid fibers composed of aromatic dicarboxylic acid components and aromatic diamine components are widely used as industrial materials due to their so-called high strength, high modulus of elasticity, and high heat resistance. Use or functional clothing use. Especially in recent years, the demand for para-aramid staple fibers has been increasing mainly for functional clothing applications such as firefighting clothin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M13/292D06M101/36
Inventor 滋野治雄牧野昭二奥家智裕
Owner TEIJIN LTD