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Semi-aromatic polyamide fiber with low water absorption rate and high temperature resistance and preparation method thereof

A polyamide fiber and semi-aromatic technology, which is applied in the field of copolymerized low water absorption and high temperature resistant semi-aromatic polyamide fiber material and its preparation field, can solve the problem of no preparation method of copolymerized semi-aromatic polyamide fiber and the like, and achieve excellent thermal stability. Stability and mechanical properties, effect of low water absorption

Inactive Publication Date: 2019-10-11
四川斯派恩新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In existing reports and technologies, there is no relevant report on copolymerized semi-aromatic polyamide fiber and its preparation method

Method used

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  • Semi-aromatic polyamide fiber with low water absorption rate and high temperature resistance and preparation method thereof
  • Semi-aromatic polyamide fiber with low water absorption rate and high temperature resistance and preparation method thereof
  • Semi-aromatic polyamide fiber with low water absorption rate and high temperature resistance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Copolymerized semi-aromatic polyamide resin PA6T-1 (its glass transition temperature is 90°C, melting temperature is 310°C, and crystallization temperature is 230°C) is boiled for 12 hours at a temperature of 80°C; then the resin is dried, and the drying temperature is 120°C, drying time 18h; pass the dry powder through 0.5cm 3 The metering pump of / r is sent into the twin-screw extruder under the conditions of melting temperature of 290°C, spinneret hole diameter of 0.08mm, length-to-diameter ratio L / D of 2.8, and spinneret holes of 64 holes. Melt spinning, the melt was obtained after 6 minutes; the melt was heat-set at 220°C after passing through the spinneret, and then solidified and formed in a slow cooling zone in a water bath at a temperature of 80°C; the solidified and formed fiber After oiling the guide wire, it enters into 3 stages of drafting and shaping to obtain fibers, wherein the drafting ratio is 4 times, the drafting temperature is 80°C, the shaping temp...

Embodiment 2

[0033] The copolymerized semi-aromatic polyamide resin PA10T (melting temperature 315°C, heat distortion temperature 270°C),

[0034] Boil in water for 15 hours at a temperature of 90°C; then dry the resin at a drying temperature of 110°C and a drying time of 12 hours; pass the dry powder through 0.5cm 3 The metering pump of / r is sent into the twin-screw extruder under the conditions of melting temperature of 295°C, spinneret hole diameter of 0.08mm, aspect ratio L / D of 2.8, and spinneret hole number of 120. Melt spinning, the melt was obtained after 6 minutes; the melt was heat-set at 230°C after passing through the spinneret, and then solidified and formed in a slow cooling zone in a water bath at a temperature of 70°C; the solidified and formed fiber After oiling the guide wire, it enters 3 stages of drafting and shaping to obtain fibers, wherein the drafting ratio is 3 times, the drafting temperature is 80°C, the shaping temperature is 200°C, the shaping time is 8min, and...

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Abstract

The invention relates to the technical field of polymer materials, in particular to a copolymerized semi-aromatic polyamide fiber material with a low water absorption rate and high temperature resistance and a preparation method thereof. The invention provides a preparation method of a semi-aromatic polyamide fiber with a low water absorption rate and high temperature resistance. According to thepreparation method, the semi-aromatic polyamide fiber with the low water absorption rate and high temperature resistance is prepared from copolymerized semi-aromatic polyamide by a melt spinning method. The copolymer fiber obtained by the method also has the low water absorption rate in the case of having excellent heat resistance; the method is a low-cost, non-polluting, convenient and simple preparation method.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a copolymerized low water absorption high temperature resistant semi-aromatic polyamide fiber material and a preparation method thereof. Background technique [0002] Aliphatic polyamide fibers have good comprehensive properties, including mechanical properties, heat resistance, wear resistance and easy processing, and are widely used. However, aliphatic polyamide fibers have poor heat resistance and will change at 150°C. Huang, which limits the application of aliphatic polyamides under high temperature conditions. In addition, due to the high water absorption rate of the aliphatic polyamide fiber, the mechanical properties of the fiber are greatly reduced after water absorption, which also limits its application field. Although fully aromatic polyamide fibers have high strength, low water absorption, and high temperature resistance, fully aromatic polyamide fibers can...

Claims

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Application Information

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IPC IPC(8): D01F6/80D01F6/90
CPCD01F6/80D01F6/90
Inventor 卫志美杨杰龙盛如王孝军张美林张刚
Owner 四川斯派恩新材料有限公司