Method for manufacturing environmentally-friendly polyurethane elastomer conveying belt and aqueous adhesive therein

A technology of polyurethane elastomer and production method, which is applied in polyurea/polyurethane adhesives, adhesives, conveyors, etc., can solve the problems of human injury, volatile, strong odor, etc., and reduce production safety hazards and flex fatigue Less damage and less environmental pollution

Inactive Publication Date: 2010-06-16
SHANGHAI YONGLI BELTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although its adhesive performance can meet the requirements, it will cause great harm to the human body during the sizing operation due to its high isocyanate group (-NCO) and highly toxic free polyisocyanate monomers.
Moreover, because organic solvents are flammable, explosive, volatile, smelly, pollute the environment and are toxic

Method used

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  • Method for manufacturing environmentally-friendly polyurethane elastomer conveying belt and aqueous adhesive therein
  • Method for manufacturing environmentally-friendly polyurethane elastomer conveying belt and aqueous adhesive therein
  • Method for manufacturing environmentally-friendly polyurethane elastomer conveying belt and aqueous adhesive therein

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] First, mix 100g of water-based polyurethane, 2g of thickener and 0.5g of defoamer in the water-based adhesive component, and then add 1g of cross-linking agent and stir well within 2 hours before going on the coating machine to make the water-based adhesive component.

[0035] see figure 1 As shown, the production method of the environment-friendly polyurethane elastomer conveyor belt of the present invention adopts a coating process, and utilizes an oven heating method to produce, and the production process includes the following steps in sequence:

[0036] The first step: the polyester fabric core is heated and dried in the oven of the production line, and the fabric is stentered;

[0037] The second step: the shaped fabric is coated with a water-based adhesive by a coating machine, and then dried in an oven;

[0038] Step 3: Coat the surface layer (polyurethane powder) with a coating machine knife, and then enter the oven for heating and melting;

[0039] Step 4: P...

Embodiment 2

[0041] Other formulations and production processes are the same as in Example 1, except that the amount of cross-linking agent is different, and the cross-linking agent is 2 g.

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PUM

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Abstract

The invention relates to a method for manufacturing an environmentally-friendly polyurethane elastomer conveying belt and an aqueous adhesive therein. The method adopts a coating process, and comprises the following steps: heating and drying a polyester fabric core through a production line oven, and tentering the setting fabric; base-coating the aqueous adhesive to the setting fabric by a coating cutter of a coating machine, and drying the setting fabric in the oven; coating a surface layer by the coating cutter of the coating machine, and heating and melting the fabric in the oven; and feeding the conveying belt coated with the surface layer to the oven again for heating and finishing so as to form a finished product. The aqueous adhesive comprises the following components in part by weight: 100 parts of aqueous polyurethane, 1 to 5 parts of thickening agent, 0 to 2 parts of antifoaming agent and 1 to 10 parts of crosslinking agent, wherein the aqueous polyurethane is synthesized by polyester polyol and polyisocyanate. The method has the advantages that an organic adhesive solvent is replaced by the aqueous adhesive, so the polyurethane conveying belt is safe and sanitary, has no peculiar smell, meets the standard requirement and related regulations of organic volatile substances, and has good peeling strength for polyester fabrics and polyurethane elastomer, small flexure fatigue damage and long service life.

Description

technical field [0001] The invention relates to a manufacturing method of an environment-friendly polyurethane elastomer conveyor belt, and also relates to a water-based adhesive used in manufacturing the conveyor belt and a preparation method thereof. Background technique [0002] Conveyor belts used in light industry require high strength, good flexibility, wear resistance, tear resistance, large enough friction coefficient, and as long service life as possible. Since polyurethane elastomer has high wear resistance and high coefficient of friction, and is known as "wear-resistant rubber", polyurethane elastomer is one of the most suitable materials. Polyurethane elastomer conveyor belt not only has the characteristics of high tensile strength, good flexibility, lightness, thinness and toughness of ordinary conveyor belts, but also is oil-resistant, non-toxic and hygienic, and easy to clean. In foreign countries, polyurethane elastomer conveyor belts have been used in prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/572D06M15/564B65G15/34C09J175/06
Inventor 代飞史佩浩
Owner SHANGHAI YONGLI BELTING
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