Method for filling polyurethane sole with waste rubber

A technology of waste rubber and polyurethane, which is applied in the direction of shoe soles, footwear, applications, etc., can solve problems such as complex process, and achieve the effect of simple process, high tear strength and uniform cells

Active Publication Date: 2013-04-24
ZHEJIANG HUAFON NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process is complex

Method used

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  • Method for filling polyurethane sole with waste rubber
  • Method for filling polyurethane sole with waste rubber
  • Method for filling polyurethane sole with waste rubber

Examples

Experimental program
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Effect test

Embodiment 1

[0033] (1) After removing impurities, the waste rubber is crushed to 40 mesh particles for use; (2) 7.00 kg of polycaprolactone glycol with a molecular weight of 1500 and 3.00 kg of polyethylene adipate glycol with a molecular weight of 1500 , 0.20kg of triethylenediamine, 0.04kg of distilled water, 0.12kg of silicone foam stabilizer, 0.70kg of 1,2-propanediol, 0.80kg of 1,4-butanediol and mix it evenly, as component A, set aside; (3) 0.71kg polycaprolactone diol, 1.41kg polyglycol adipate, 7.05kg 4,4'-xylene methane diisocyanate (MDI) were mixed and reacted, and the reaction temperature was controlled to 60°C, and the reaction time was 4 hours later. Component B is ready for use; (4) Mix component A, component B and 1.68kg of rubber particles uniformly, inject them into the mold for reaction molding, after demolding, aging in an oven at 60°C for 24 hours to obtain polyurethane filled with waste rubber particles Sole.

Embodiment 2

[0035] (1) After removing impurities, the waste rubber is crushed to 30 mesh particles for use; (2) 5.00 kg of polycaprolactone diol with a molecular weight of 3000 and 5.00 kg of polyethylene adipate glycol with a molecular weight of 3000 , 0.16kg of triethylenediamine, 0.05kg of distilled water, 0.08kg of silicone foam stabilizer, 0.50kg of 1,2-propanediol, 0.60kg of 1,4-butanediol and mixed uniformly, as component A, set aside; (3) 1.48kg polycaprolactone diol, 1.48kg polyglycol adipate, 4.94kg 4,4'-xylene methane diisocyanate (MDI) were mixed and reacted, the reaction temperature was controlled at 70°C, and the reaction time was 3 hours later. Component B is ready for use; (4) Mix component A, component B and 2.31kg rubber particles uniformly, inject them into the mold for reaction molding, after demolding, aging in an oven at 70°C for 23 hours to obtain polyurethane filled with waste rubber particles Sole.

Embodiment 3

[0037] (1) After removing impurities, the waste rubber is crushed to 20 mesh particles for use; (2) 4.00 kg of polycaprolactone glycol with a molecular weight of 2000 and 6.00 kg of polyethylene adipate glycol with a molecular weight of 2000 , 0.12kg of triethylenediamine, 0.06kg of distilled water, 0.05kg of silicone foam stabilizer, 0.30kg of 1,2-propanediol, 0.40kg of 1,4-butanediol and mixed uniformly, as component A, set aside; (3) 1.72kg polycaprolactone glycol, 2.15kg polyglycol adipate, 4.30kg 4,4'-xylene methane diisocyanate (MDI) were mixed and reacted, the reaction temperature was controlled to 80°C, and the reaction time was 3 hours later, as Component B is ready for use; (4) Mix component A, component B and 2.86kg rubber particles uniformly, inject them into the mold for reaction molding, after demolding, aging in an oven at 70°C for 22 hours to obtain polyurethane filled with waste rubber particles Sole.

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Abstract

The invention provides a method for filling a polyurethane sole with waste rubber. The method comprises the following steps that A components, B components and rubber particles are mixed to be poured into a sole mold to be in reaction forming, demolding is carried out, and curing is maintained in a 60-70 DEG C drying oven for 22-24 hours to obtain the polyurethane sole filled with the waste rubber particles; the A components comprise, by weight, 100 parts of low polymer polyhydric alcohols, 1.2-2.0 parts of catalytic agents, 0.3-0.6 part of foaming agents, 0.5-1.2 parts of foam stabilizer silicone oil, and 7.0-15.0 parts of chain extender; and the B components comprise, by weight, 30-90 parts of the low polymer polyhydric alcohols, and 100 parts of diisocyanate. According to the method, the obtained polyurethane sole is uniform in foam holes, smooth in surface, and higher than a common polyurethane sole in tensile strength, abrasion resistance and tearing strength, the problem of reuse of rubber waste is resolved, and the technological process is simple and efficient.

Description

Technical field [0001] The invention relates to a technology for recycling waste rubber. Background technique [0002] With the development of the automobile industry, the production of waste rubber has also increased year by year. Waste rubber is difficult to degrade under natural conditions, and long-term storage in the open air not only occupies a large amount of land, but also easily breed mosquitoes to spread diseases and cause fires. How to deal with waste rubber has become one of the urgent problems in the rubber industry. If it is burned as a fuel, the smoke and dust produced will cause secondary pollution to the atmosphere. At present, the main treatment methods of waste rubber are tire retreading, rubber powder production, and reclaimed rubber production. Tire retreading is limited to waste tires with intact carcass. The production of rubber powder and reclaimed rubber requires a series of regeneration reduction technologies to restore the waste rubber to an unvulcan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/42C08J9/08C08J9/14C08L75/06C08L21/00A43B13/04C08G101/00
Inventor 刘旭温文宪陈一帆尤茜茜虞建女章海霞
Owner ZHEJIANG HUAFON NEW MATERIALS CO LTD
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