Aramid fiber surface ammoniation modifying method

A technology for aramid fiber and fiber surface, which is applied in fiber treatment, fiber type, textile and papermaking, etc. It can solve the problems of high requirements and short timeliness of fiber activation, achieve low equipment requirements, improve fiber surface energy and surface activity , the effect of improving interface performance

Inactive Publication Date: 2019-09-20
SHANDONG FENGYUAN TIRE MFG
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  • Claims
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Problems solved by technology

However, plasma treatment technology has relatively high requirements on equipment and processing environment, and the activation time of the treated fibers is relatively short.

Method used

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  • Aramid fiber surface ammoniation modifying method
  • Aramid fiber surface ammoniation modifying method
  • Aramid fiber surface ammoniation modifying method

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Embodiment Construction

[0029] The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0030] A treatment method for ammonification modification of the surface of aramid fibers, comprising the steps of:

[0031] Step 1, cleaning and drying of the fiber surface; (1) Put the aramid fiber bundle into a Soxhlet extractor, add acetone and heat it, and clean the fiber by reflux for 24 hours;

[0032] (2) Take out the fibers treated in step (1), and dry them in an oven at 70-80°C for 2-4 hours.

[0033] Step 2, the chlorination reaction on the surface of the fiber includes the following steps: (1) adding 1 to 5 g of anhydrous AlCl 3 Add 100ml of 1,4-dichlorobutane into a 250ml single-necked bottle, stir evenly with a magnetic stirrer, add 1-5g of dried F-3A fiber into the single-necked bottle, connect the condensing device, and react at 85°C for 4 ~8h;

[0034] (2) Take out the fibers treated in step (1), and wash them with acetone ...

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Abstract

The invention relates to an aramid fiber surface ammoniation modifying method. The method includes following steps: washing and drying the surface of fiber, allowing chlorination reaction of the surface of the fiber, and allowing ammoniation reaction of the surface of the fiber. The Friedel-Crafts reaction principle is utilized to graft 1, 4-dichlorobutane onto the surface of the fiber, and a reaction active site is introduced on the surface of aramid fiber with high chemical inertness, so that ammoniation of the surface of the fiber can be triggered, energy and activity of the surface of the fiber are improved, stable chemical bonding between the fiber and a resin matrix is promoted, and interface performance of a composite material is improved. Introduced methylene chloride group can initiate other chemical reaction like hydroxylation and carboxylation; by introducing different functional groups, the fiber is enabled to meet different resin system requirements. The method is simple in process, short in treatment time, low in equipment requirement and suitable for mass treatment of the fiber.

Description

technical field [0001] The invention relates to the field of aramid fiber modified tire manufacturing, in particular to a treatment method for aramid fiber surface ammonification modification. Background technique [0002] Because the molecular structure of aramid fibers contains a large number of benzene rings and amide bonds, the molecular chains are flat, rigid and straight, the surface of the fibers is smooth, and the surface is very inert, which leads to very poor interface properties between the fibers and the resin matrix. The low bonding strength of the interface seriously affects the application of aramid fibers in high-end fields such as aerospace and advanced weapons. [0003] Therefore, the development of high-end scientific and technological weapons in our country urgently needs to carry out research work on the optimization of the aramid fiber interface, improve the surface activity of the fiber, and improve the interface bonding ability between the fiber and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/08D06M11/60D06M101/36
CPCD06M11/60D06M13/08D06M2101/36
Inventor 潘超蒋延华章远甲朱强谢航谢非朱先军刘峰
Owner SHANDONG FENGYUAN TIRE MFG
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