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Method for pretreating fibers

A pretreatment and fiber technology, applied in fiber treatment, textiles and papermaking, etc., can solve problems such as fiber damage, and achieve the effect of low cost, low equipment requirements and simple process

Inactive Publication Date: 2012-08-15
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the environmental problems caused by the high toxicity of blocked isocyanate and avoid the damage to fibers caused by high temperature treatment, simplify the process and reduce production costs

Method used

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  • Method for pretreating fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Surface activation: configure 1L of 1g / L dopamine hydrochloride (commercially available) aqueous solution, adjust pH=8.5 with tris (commercially available), put 10cm*10cm polyester canvas (commercially available) into the solution, , aerobic, and stirred for 2 hours, weighed 25g of water-soluble epoxy resin (commercially available) and added it to the reaction solution to continue the reaction for 8 hours, then took out the polyester canvas and washed it with water.

[0027] Dipping treatment: Add water, resorcinol, formaldehyde, and sodium hydroxide into a stirring tank, stir evenly, and react at 40°C for 4 hours to obtain a phenolic resin solution. Add styrene-butadiene latex to the phenolic resin solution and stir well. Stand at room temperature for 16 hours to obtain a dipping solution. The mass percent content of each component is: 1.86% of resorcinol, 1% of formaldehyde, 0.05% of sodium hydroxide, 41.20% of styrene-butadiene latex, and 64.19% of water. After imm...

Embodiment 2

[0038] Surface activation: configure 1L of 2g / L dopamine hydrochloride (commercially available) aqueous solution, adjust pH=8.0 with tris (commercially available), put 10cm*10cm aramid canvas (commercially available) into the solution, , aerobic, and stirred for 2 hours, weighed 50 g of silane coupling agent Si69 and added it to the reaction solution to continue the reaction for 12 hours, then took out the aramid canvas and washed it with water to dry it.

[0039] Dipping treatment: Add water, resorcinol, formaldehyde, and sodium hydroxide into a stirring tank, stir evenly, and react at 30°C for 6 hours to obtain a phenolic resin solution. Add styrene-butadiene latex to the phenolic resin solution and stir well. Stand at room temperature for 18 hours to obtain a dipping solution. The mass percent content of each component is: 2.03% of resorcinol, 1.20% of formaldehyde, 0.06% of sodium hydroxide, 34.71% of styrene-butadiene latex, and 62.00% of water. After immersing the surf...

Embodiment 3

[0042] Surface activation: configure 1L of 4g / L dopamine hydrochloride (commercially available) aqueous solution, adjust pH=8.3 with tris (commercially available), put 10cm*10cm ultra-high molecular weight polyethylene canvas (commercially available) into the solution , reacted at room temperature, aerobic, and stirred for 2h, weighed 75g of GMA (glycidyl methacrylate, commercially available) and added it to the reaction solution to continue the reaction for 20h, then took out the ultra-high molecular weight polyethylene canvas and washed it with water.

[0043] Dipping treatment: Add water, resorcinol, formaldehyde, and sodium hydroxide into a stirring tank, stir evenly, and react at 25°C for 6 hours to obtain a phenolic resin solution. Add vinylpyridine latex to the phenolic resin solution and stir well. Stand at room temperature for 20 hours to obtain a dipping solution. The mass percent content of each component is: water 60.07%, resorcinol 1.93%, formaldehyde 1.03%, sodi...

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Abstract

The invention relates to a method for pretreating fibers, comprising the following steps of: performing surface activation on fibers by a dopamine hydrochloride biomimetic modification method, and then performing impregnation treatment on the fibers by using impregnation solution composed of rubber latex and phenolic resin, aiming to improve the interface adhesion property of the fibers with rubber so that the fibers are more suitable for tyres, conveyor belts, high-pressure rubber tubes and transmission belts. The method solves the experimental problem caused by high toxicity of isocyanate and avoids damage on the fibers caused by high-temperature treatment; and the process flow is simplified and the production cost is reduced.

Description

technical field [0001] The invention relates to a fiber pretreatment method, which aims to improve the interface bonding performance between fiber and rubber, so that the fiber is more suitable for tires, conveyor belts, high-pressure rubber hoses, and transmission belts. Background technique [0002] At present, there are many kinds of skeleton materials for fiber-reinforced rubber composites, and traditional ones include cotton fibers, nylon, rayon, and polyamide. With the continuous improvement of performance requirements in various fields, new high-performance skeleton materials are gradually entering all walks of life, such as polyester, aramid fiber, ultra-high molecular weight polyethylene, etc. In fiber-reinforced rubber composites, the interfacial adhesion performance is the main factor determining the overall performance of the composite material, which requires that the strength and other physical and mechanical properties of the rubber and the skeleton material n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/61D06M15/693D06M15/356D06M15/227D06M15/41C08J5/06
Inventor 王文才萨日娜张立群田明程文建
Owner BEIJING UNIV OF CHEM TECH
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