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Preparation method of PIPD/PBO (poly(dihydroxyphenylene pyridobisimidazole)/poly-p-phenylene ben-zobisthiazole) blend fiber

A technology of blended fiber and PBO polymer, which is applied in the field of blended fiber, can solve the problems of deterioration of mechanical properties of PBO fiber, poor bonding performance of resin matrix on the surface of PBO fiber, etc., and achieve the goal of improving application performance, increasing molecular weight and increasing efficiency Effect

Active Publication Date: 2015-08-26
CHINA BLUESTAR CHENGRAND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The present invention aims to solve the problem that the surface wetting performance of PBO fiber and the bonding performance with the resin matrix are poor, and the existing improvement method will deteriorate the mechanical properties of PBO fiber at the expense of the problem, and provides a preparation method of PIPD / PBO blended fiber to achieve improved The purpose of PBO fiber application performance in composite materials

Method used

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  • Preparation method of PIPD/PBO (poly(dihydroxyphenylene pyridobisimidazole)/poly-p-phenylene ben-zobisthiazole) blend fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A preparation method for PIPD / PBO blended fibers, comprising the following processing steps:

[0045] A, preparation of PIPD / PPA polymer solution

[0046] Put 2,5-dihydroxyterephthalic acid, tetraaminopyridine trihydrochloride monohydrate, polyphosphoric acid and phosphorus pentoxide into a polymerization kettle for polymerization to obtain a PIPD / PPA polymer solution;

[0047] B, preparation of PBO / PPA polymer solution

[0048] Put terephthalic acid, 4,6-diaminoresorcinol hydrochloride, polyphosphoric acid and phosphorus pentoxide into a polymerization kettle for polymerization to obtain a PBO / PPA polymer solution;

[0049] C, mixed preparation PIPD / PBO polymer

[0050] The PIPD / PPA polymer solution obtained in step A is mixed with the PBO / PPA polymer solution obtained in step B in a mass ratio of 1:5 to obtain a PIPD / PBO polymer;

[0051] D. Preparation of spun silk

[0052] The PIPD / PBO polymer obtained in step C is homogenized and degassed by a twin-screw extrud...

Embodiment 2

[0056] A preparation method for PIPD / PBO blended fibers, comprising the following processing steps:

[0057] A. Preparation of PIPD / PPA polymer solution

[0058] Put 2,5-dihydroxyterephthalic acid, tetraaminopyridine trihydrochloride monohydrate, polyphosphoric acid and phosphorus pentoxide into a polymerization kettle for polymerization to obtain a PIPD / PPA polymer solution;

[0059] B, preparation of PBO / PPA polymer solution

[0060] Put terephthalic acid, 4,6-diaminoresorcinol hydrochloride, polyphosphoric acid and phosphorus pentoxide into a polymerization kettle for polymerization to obtain a PBO / PPA polymer solution;

[0061] C, mixed preparation PIPD / PBO polymer

[0062] The PIPD / PPA polymer solution that step A obtains is mixed with the PBO / PPA polymer solution that step B obtains by the mass ratio of polymer as 1:20, obtains PIPD / PBO polymer;

[0063] D. Preparation of spun silk

[0064] The PIPD / PBO polymer obtained in step C is homogenized and degassed by a twin...

Embodiment 3

[0068] A preparation method for PIPD / PBO blended fibers, comprising the following processing steps:

[0069] A, preparation of PIPD / PPA polymer solution

[0070] Put 2,5-dihydroxyterephthalic acid, tetraaminopyridine trihydrochloride monohydrate, polyphosphoric acid and phosphorus pentoxide into a polymerization kettle for polymerization to obtain a PIPD / PPA polymer solution;

[0071] B, preparation of PBO / PPA polymer solution

[0072] Put terephthalic acid, 4,6-diaminoresorcinol hydrochloride, polyphosphoric acid and phosphorus pentoxide into a polymerization kettle for polymerization to obtain a PBO / PPA polymer solution;

[0073] C, mixed preparation PIPD / PBO polymer

[0074] The PIPD / PPA polymer solution that step A obtains is mixed with the PBO / PPA polymer solution that step B obtains by the mass ratio of polymer as 1:12.5, obtains PIPD / PBO polymer;

[0075] D. Preparation of spun silk

[0076] The PIPD / PBO polymer obtained in step C is homogenized and degassed by a tw...

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Abstract

The invention relates to a preparation method of a PIPD / PBO (poly(dihydroxyphenylene pyridobisimidazole) / poly-p-phenylene ben-zobisthiazole) blend fiber and belongs to the technical field of blend fibers. The technology comprises the steps of preparation of a PIPD / PPA (phenyl-propanolamine) polymer solution, preparation of a PBO / PPA polymer solution, mixed preparation of a PIPD / PBO polymer, preparation of freshly formed filaments, drawing, solidification, water washing and drying. According to the PIPD / PBO blend fiber prepared by the method, the PIPD polymer is introduced into a PBO fiber, that is to say, a little PIPD is added into a PBO polymer matrix. The wettability and bonding performance of the PBO fiber with a resin matrix are improved on the premise that the excellent mechanical property, high-temperature resistance and flame resistance of the PBO fiber are not reduced.

Description

technical field [0001] The invention relates to a preparation method of blended fibers, more specifically, the invention relates to a preparation method of PIPD / PBO blended fibers, which belongs to the technical field of blended fibers. Background technique [0002] Poly-p-phenylenebenzobisoxazole [referred to as PBO] is a rigid rod-shaped liquid crystal polymer with conjugated aromatic heterocycles. The PBO fiber developed by Japan Toyobo Co., Ltd. has a tensile strength of 5.8GPa and an elastic modulus of 280GPa. The thermal decomposition temperature in air is 650°C and the limiting oxygen index LOI is 68. It has excellent heat resistance, flame retardancy and impact resistance. PBO fiber and its composite materials have been widely used in aerospace and aviation fields. However, the surface of PBO fiber is smooth, and most of the polar heteroatoms on the molecular chain are wrapped inside the fiber, and the polarity of the fiber surface is also very small, which makes i...

Claims

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Application Information

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IPC IPC(8): D01F8/16D01D13/00D01D5/30C08G73/18C08G73/22
Inventor 范新年黄治川严家策许伟付兴伟冉茂强郭玲
Owner CHINA BLUESTAR CHENGRAND CO LTD
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