In situ modified waste rubber powder composite material and preparing method thereof

A technology of waste rubber powder and composite materials, applied in the field of environmental materials, can solve the problems of unsatisfactory performance and high cost, and achieve the effects of low cost, easy source, significant social and economic benefits

Inactive Publication Date: 2004-09-15
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high cost of polyurethane, the performance cannot meet the requirements of most rubber products including tires. It is necessary to develop rubber-powder-containing composite materials based on general-purpose rubber or thermoplastics to broaden the scope of this rubber powder. new ways to exploit

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In the first step, after the natural rubber is plasticized at room temperature on the open mill, the tire rubber powder is added for mixing, and the mass ratio of the two is 100 / 0 to 50 / 50. At the same time, the modifiers maleic anhydride and octadecane methacrylate are added. 10 parts of base ester and ethylene glycol dimethacrylate (mass ratio 1:1:0.1) and 0.5 part of benzoyl peroxide (BPO), then add stearic acid and zinc oxide according to the formula in Table 1 , Accelerator M and sulfur and other compounding agents, knead evenly to produce tablets;

[0030] The second step is to park the compounded rubber at room temperature overnight, and at a temperature of 143 °C, measure the positive vulcanization time with a vulcanizer, and then perform molding vulcanization on a flat vulcanizer to obtain an in-situ modified natural rubber / rubber powder composite Material Vulcanized rubber test piece.

[0031] The physical and mechanical properties test results in Table 1 sho...

Embodiment 2

[0035] In the first step, 100 parts of styrene-butadiene rubber was added to 50 parts of tire rubber powder and mixed at room temperature on an open mill, and at the same time, modifier methacrylic acid, dibutyl maleate and butylene glycol dimethacrylate were added at a ratio of 3: 3: 0.2 weight mixed mixture, 0.2 part of initiator dicumyl peroxide, then add 1 part of stearic acid, 3 parts of zinc oxide, 1 part of accelerator CZ, 1.8 parts of sulfur and 40 parts of N330 carbon black, and knead evenly film;

[0036] In the second step, the mixed rubber was parked at room temperature overnight, and the positive vulcanization time was measured with a vulcanizer at a temperature of 151 °C, and then molded and vulcanized on a flat vulcanizer to obtain the vulcanization of the in-situ modified styrene-butadiene rubber / rubber powder composite material. glue.

[0037]The 300% tensile stress, tensile strength, elongation at break and tensile permanent deformation of the composite vulc...

Embodiment 3

[0039] In the first step, 100 parts of EPDM rubber, 50 parts of 60-mesh rubber powder, 6 parts of butyl methacrylate, 3.0 parts of glycidyl methacrylate monomer, 3.0 parts of triallyl isocyanurate, 5.0 parts of dicumyl peroxide, then add 5 parts of zinc oxide, 1 part of stearic acid, 1 part of anti-aging agent RD, 1 part of anti-aging agent MB, 5.0 parts of paraffin oil, 50 parts of carbon black, in open mill or internal mixer Mix well at room temperature.

[0040] The second step is to park the compounded rubber at room temperature overnight, then measure the vulcanization time with a vulcanizer at 160°C, and finally perform molding vulcanization on a flat vulcanizer to obtain a vulcanized rubber test piece.

[0041] The 200% tensile stress, tensile strength, elongation at break, tensile set and hardness of the vulcanizate were 7.8MPa, 16.2MPa, 400%, 10% and 72 (Shore A, degrees), respectively, corresponding to The corresponding properties of the EPDM vulcanizate without rub...

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Abstract

The invention refers to a kind of in situ modified waste rubber powder compound material and the manufacturing method. The method puts the waste rubber powder pulverized by normal machine without surface preprocessing into each kind of rubber or thermal plasticity plastics by normal rubber plastic process and device, through specific conjugate ternary interpenetration polymer network and the interface conjugate interpenetration technique, the rubber powder and the rubber or the plastic are modified in situ and combined tightly, thus forms the sulfide rubber or thermal plasticity elastic material. The process is simple, the cost is low, and the product has a good performance, it can be applied to produce each kind of sulfide product or thermal plasticity elastic product.

Description

(1) Technical field [0001] The invention relates to the field of environmental materials, in particular to an in-situ modified waste rubber powder composite material and a preparation method thereof. (2) Background technology [0002] At present, human society is facing serious environmental problems, one of which is the disposal of solid waste. With the rapid development of the global automobile industry, the tire industry has developed by leaps and bounds. At the same time, it has also resulted in the accumulation of a large number of waste tires. Together with other waste rubber products, serious "black pollution" has been formed. Waste rubber is mainly composed of cross-linked polymers that are not easy to be recycled and reused. How to deal with these waste rubbers has become an increasingly urgent worldwide problem. The amount of waste rubber produced in the world every year is at least 12 million tons, of which 60-70% is waste tires. In 2000, about 800 million tires...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C35/00C08J3/24C08L17/00C08L23/00
Inventor 贾德民邱清华郭宝春
Owner SOUTH CHINA UNIV OF TECH
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