Preparation method for aramid fiber 1414 based composite material

A fiber composite material, aramid fiber technology, applied in fiber processing, spinning solution preparation, wet spinning, etc., can solve the problems of restricting market development, high performance and stability requirements, and achieve sufficient solubility, guaranteed strength, The effect of increasing fiber modulus

Active Publication Date: 2019-05-03
BLUESTAR CHENGDU NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Because the aramid 1414 composite material has high requirements on the performance and stability of the aramid 1414 precursor, and requires good adhesion between the fiber and the epoxy resin or rubber matrix, the currently produced aramid 1414 fiber composite material cannot meet the requirements. Actual demand, which also limits its market development in high-end applications

Method used

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  • Preparation method for aramid fiber 1414 based composite material
  • Preparation method for aramid fiber 1414 based composite material
  • Preparation method for aramid fiber 1414 based composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A preparation method based on aramid fiber 1414 fiber composite material, comprising the steps of:

[0038] A. polymerization

[0039] First, weigh the raw material poly-p-phenylene terephthalamide (PPDA) and raw material terephthaloyl chloride (TPC); dissolve poly-p-phenylene terephthalamide in NMP / CaCl 2 In the process, the premix is ​​obtained, and then placed in the prepolymer mixer; secondly, 50% terephthaloyl chloride is also placed in the prepolymer mixer, and the two are reacted to obtain the prepolymer, and then the The prepolymer and the remaining 50% of terephthaloyl chloride were mixed in a polymerization mixer to obtain a mixture; finally, the mixture was placed in a polymerization reactor for 6 minutes to obtain a polymer;

[0040] Grinding, beating, washing, purifying and drying the polymer, storing it for later use;

[0041] B. spinning

[0042] Put the polymer obtained in step A in a dissolving mixer, and at the same time, pass sulfuric acid into t...

Embodiment 2

[0046] On the basis of Embodiment 1, the difference of this embodiment is:

[0047] In step A, the reaction 7min of the mixture in the polymerization reactor;

[0048] In step B, after passing sulfuric acid into the dissolution mixer, it was mixed and dissolved at 85°C for 60 minutes;

[0049] In step B, heat treatment at 170°C for 0.8s;

[0050] In step C, in the oiling treatment, the oil content is controlled to 0.75%.

Embodiment 3

[0052] On the basis of embodiment 1-2, the difference of this embodiment is:

[0053] In step A, the reaction 7min of the mixture in the polymerization reactor;

[0054] In step B, after passing sulfuric acid into the dissolution mixer, it was mixed and dissolved at 80°C for 40 minutes;

[0055] In step B, heat treatment at 150°C for 0.5s;

[0056] In step C, in the oiling treatment, the oil content is controlled to 0.68%.

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Abstract

The invention discloses a preparation method for an aramid fiber 1414 based composite material, belonging to the technical field of artificial fibers and composite materials. The preparation method provided by the invention uses poly-para-phenylene terephthalamide and paraphthaloyl chloride as raw materials, performs polymerization, spinning and post-treatment, and strictly controls condition parameters like temperature, viscosity, time, content, spinning speed and tension in the production process, so the production process for the aramid fiber 1414 based composite material is effectively guaranteed to be stably performed; meanwhile, the quality of a target composite material is improved; and the demands of a market are met.

Description

technical field [0001] The invention relates to a method for preparing a composite material based on aramid 1414 fibers, in particular to a method for preparing a high-strength composite material based on aramid 1414 fibers, and belongs to the technical field of artificial fibers and composite materials. Background technique [0002] Aramid 1414 composite materials are widely used in the fields of national defense, military industry and modern industry because of their characteristics of high tensile strength, light weight, and fatigue resistance. The material market has a large capacity. [0003] At present, my country has a huge demand for aramid 1414 composite materials. For example, the Military Supplies Department of the General Logistics Department needs more than 500 tons per year, which are mainly used to equip the troops with bulletproof vests, bulletproof vests, and bulletproof helmets; the aerospace sector needs dozens of tons every year. For rocket engine casings...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L21/00C08L77/10D01F6/60C08G69/32C08G69/04D01D1/02D01D5/06D01D10/02D06B3/04D06M15/53D06M13/224
Inventor 毛亚丽崔晓静孙潜殷小吉黄昱
Owner BLUESTAR CHENGDU NEW MATERIALS
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