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Surface treatment method of aramid fiber III

A technology of surface treatment and surface treatment agent, which is applied in fiber treatment, fiber type, textiles and papermaking, etc. It can solve the problems of complex preparation of surface treatment agent, easy loss of thread strength, and inconspicuous treatment effect, so as to improve the hand feeling and the preparation Simple and effective in improving interlaminar shear strength

Active Publication Date: 2010-07-28
CHINA BLUESTAR CHENGRAND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Plasma treatment technology is currently the most researched method in aramid fiber surface modification technology. Although the fiber surface modification technology by plasma treatment has the advantages of simplicity and practicality, the treatment effect will decay with time and cannot be stored for a long time. ;Other physical methods have disadvantages such as not being easy to be continuous on-line and easy to lose thread strength; although the existing chemical methods are easy to realize on-line continuous treatment, most of the surface treatment agents used are complicated to prepare and the treatment effect is not obvious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Surface treatment of Aramid III:

[0026] A. Preparation of surface treatment agent: Add 30 grams of 1,4-butane diisocyanate to 1000 grams of isopropanol to form an isopropanol solution of 1,4-butane diisocyanate with a mass fraction of 2.9%, and stir evenly .

[0027] B. Surface treatment: Continuously pass the aramid III tow at a speed of 10m / min through a small U-shaped groove with a nozzle hole at the bottom, and spray the surface treatment agent described in step A with continuous constant pressure in the nozzle hole, and Immerse aramid.

[0028] C. Drying: The tow after passing through the surface treatment agent is dried by a combination of hot roller contact drying and blast drying at a drying temperature of 90°C and a time of 3 minutes.

Embodiment 2

[0030] Surface treatment of Aramid III:

[0031] A. Preparation of surface treatment agent: Add 30 grams of 1,6-hexamethylene diisocyanate to 1000 grams of isopropanol to form an isopropanol solution of 1,6-hexamethylene diisocyanate with a mass fraction of 2.9%, and stir evenly .

[0032] B. Surface treatment: Continuously pass the aramid III tow at a speed of 10m / min through a small U-shaped groove with a nozzle hole at the bottom, and spray the surface treatment agent described in step A with continuous constant pressure in the nozzle hole, and Immerse aramid.

[0033] C. Drying: The tow after passing through the surface treatment agent is dried by a combination of hot roller contact drying and blast drying at a drying temperature of 90°C and a time of 3 minutes.

Embodiment 3

[0035] Surface treatment of Aramid III:

[0036] A. Preparation of surface treatment agent: add 22 grams of 1,4-butanediol diglycidyl ether to 978 grams of isopropanol to form 1,4-butanediol diglycidyl ether with a mass fraction of 2.2% The isopropanol solution, stir well.

[0037] B. Surface treatment: Continuously pass the aramid III tow at a speed of 10m / min through a small U-shaped groove with a nozzle hole at the bottom, and spray the surface treatment agent described in step A with continuous constant pressure in the nozzle hole, and Immerse aramid.

[0038] C. Drying: The tow that has passed through the surface treatment agent is dried using a combination of hot roller contact drying and blast drying at a drying temperature of 95°C for 3 minutes.

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PUM

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Abstract

The invention provides a surface treatment method of aramid fiber III, comprising preparation of surface treating agent, surface treatment, drying and the like. The method can improve the flexibility of the aramid fiber III, perfects hand feeling, reduces strength loss caused by factors such as bending and the like in the subsequent operation process, and more importantly improves the surface polarity of the aramid fiber III, thus improving the interface adhesive property of aramid fiber III / epoxy composite material, and further enhancing the interlaminar shear strength of the aramid fiber III / epoxy composite material, wherein the interlaminar shear strength reaches 45-55Mpa. Furthermore, the method is simple and safe in operation, and solvent can be recovered, so that on-line continuous treatment can be easily realized; and the performance of the aramid fiber III is not attenuated, and the aramid fiber III / epoxy resin prepared by aramid fiber which is placed for a longer time has the shear strength being the same as that of the aramid fiber III / epoxy resin treated just now.

Description

Technical field [0001] The present invention relates to a surface treatment method, more specifically, the present invention relates to a surface treatment method of Aramid III. Background technique [0002] As a kind of high-strength and high-modulus organic fiber, aramid has a wide range of applications in many fields due to its excellent comprehensive properties. Aramid III is a modified aramid with a heterocyclic structure in its molecular chain, so it is also called heterocyclic aramid. Heterocyclic aramid fiber has better mechanical properties than para-aramid (aramid 1414). For example, the tensile strength and tensile modulus of Russian heterocyclic aramid Apmoc are respectively higher than those of para-aramid Kevlar-produced by DuPont. 49 is 38% and 20% higher. Therefore, heterocyclic aramid is gradually becoming the preferred structural material for aerospace and military industries. Its winding-reinforced epoxy composite is an ideal material for solid rocket engine ...

Claims

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Application Information

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IPC IPC(8): D06M13/395D06M13/11D06M15/55D06M101/36
Inventor 王凤德彭涛陈超峰彭开云
Owner CHINA BLUESTAR CHENGRAND CO LTD
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