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Pretreatment method of polyester fiber surface

A technology of surface pretreatment and polyester fiber, which is applied in fiber treatment, fiber type, textiles and papermaking, etc., can solve the problem of low bond strength between highly toxic polyester fiber and rubber, and improve production continuity and efficiency. Effect of avoiding high toxicity and improving adhesive performance

Inactive Publication Date: 2013-09-18
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 the problem of the reduction of the bond strength between polyester fiber and rubber under overvulcanized conditions

Method used

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  • Pretreatment method of polyester fiber surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]Deposit polydopamine on the surface: prepare 1g / L dopamine hydrochloride (commercially available) aqueous solution, adjust pH=8.5 with tris (commercially available), put 10cm*10cm polyester cord (commercially available) into the dopamine solution, React for 4 hours at 30°C under aerobic and stirring conditions, take out the polyester cord and wash and dry it with water.

[0033] Grafting epoxy groups: Add 25g of epoxy resin (commercially available) to 1L of deionized water to configure the solution, adjust pH=8.5 with NaOH (commercially available), immerse the polyester cord with polydopamine deposited on the surface into the solution, pass through the water bath Heat to control the reaction temperature to 80° C., stir for 8 hours, and take out the polyester cord for washing and drying.

[0034] 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....

Embodiment 2

[0045] Deposit polydopamine on the surface: prepare 1g / L dopamine hydrochloride (commercially available) aqueous solution, adjust pH=8.5 with tris (commercially available), put 10cm*10cm polyester cord (commercially available) into the dopamine solution, React for 8 hours at 30°C under aerobic and stirring conditions, take out the polyester cord and wash and dry it with water.

[0046] Grafting Si69: Add 10g of silane coupling agent Si69 (commercially available) into 1L of deionized water and stir evenly, adjust the pH of the reaction solution to 11 with NaOH, immerse the polyester cord with polydopamine deposited on the surface into the reaction solution, and heat it in a water bath The reaction temperature was controlled at 20° C., the reaction was stirred for 8 hours, and the polyester cord was taken out for washing and drying.

[0047] The formula and steps of dipping treatment and preparation of strip test strips are the same as those shown in Example 1.

Embodiment 3

[0049] Deposit polydopamine on the surface: prepare 1g / L dopamine hydrochloride (commercially available) aqueous solution, adjust pH=8.5 with tris (commercially available), put 10cm*10cm polyester cord (commercially available) into the dopamine solution, React for 12 hours at 30°C under aerobic and stirring conditions, take out the polyester cord and wash and dry it with water.

[0050] Graft Si69: Add 10g of silane coupling agent Si69 (commercially available) into 1L of deionized water and stir evenly, adjust the pH of the reaction solution to 7.5 with NaOH, immerse the polyester cord with polydopamine deposited on the surface into the reaction solution, and heat it in a water bath Control the reaction temperature to 80° C., stir and react for 8 hours, take out the polyester cord and wash and dry it with water.

[0051] The formula and steps of dipping treatment and preparation of strip test strips are the same as those shown in Example 1.

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Abstract

The invention relates to a pretreatment method of a polyester fiber surface. The method comprises the following steps of: carrying out pretreatment on the surface of a polyester fiber through two steps, firstly activating the surface of the fiber by means of dopamine hydrochloride biomemetic modification, and then carrying out impregnation treatment by using an impregnation solution comprising rubber latex and phenolic resin. The interfacial bonding performance of the fiber with the rubber is improved so that the fiber is more conductive to a tyre, a conveyer belt, a high pressure rubber tube and a transmission belt. The environment problem caused by high toxicity of closed isocyanate is solved, the fiber injury caused by high-temperature treatment is prevented, the process flow is simplified, and the production cost is reduced.

Description

technical field [0001] The invention relates to a polyester fiber surface pretreatment method, which aims to improve the interface bonding performance between polyester fiber and rubber, so that polyester fiber is more suitable for tires, conveyor belts, high-pressure rubber hoses and transmission belts as a rubber skeleton material. 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. Polyester fiber has the characteristics of high strength, high modulus, not easy to decompose under heated conditions, and good dimensional stability. It is widely used in clothing, textiles, conveyor belts, hose tapes and other industries and various fields in life. 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 stren...

Claims

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Application Information

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IPC IPC(8): D06M15/693D06M15/41D06M15/37D06M13/325D06M13/50D06M15/55D06M101/32
Inventor 吴卫东商飞王文才张立群许涛
Owner BEIJING UNIV OF CHEM TECH
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