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Method for preparing activated rubber crumb by catalysis and activation reaction

A technology for activating rubber powder and reaction, applied in recycling technology, plastic recycling, etc., can solve the problems of the decline of physical and mechanical properties of rubber, poor mixing and substitution effect, poor combination of matrix glue, etc., to improve physical and mechanical properties. , Improve dynamic performance and use effect, save the effect of desulfurization

Inactive Publication Date: 2009-03-11
TIANJIN RUBBER IND RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the untreated waste rubber powder is directly mixed into the rubber compound, since the particle surface of the waste rubber powder is uneven and burr-like, the combination of the matrix glue with it is not good, and the physical and mechanical properties of the rubber compound will be reduced; Moreover, the fineness of the waste rubber powder mixed into the rubber compound also determines the performance and use of the rubber compound produced. The smaller the particle size of the waste rubber powder mixed in, the performance of the rubber compound produced will be improved and enhanced. But the cost will increase accordingly; and the larger the particle size of the mixed waste rubber powder, the performance of the rubber compound will also decline, and the effect of blending and substitution will be worse, which limits the use of waste rubber powder in rubber products. application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The formula is based on 30-40 mesh waste tire rubber powder, and the weight of each component is:

[0039] 30-40 mesh waste tire rubber powder 100kg

[0040] Dipentene 8kg

[0041] Clay 5kg

[0042] Cuprous chloride 0.2kg

[0043] Polyalkylphenol disulfide 0.7kg

[0044] Ethanol 1kg

[0045] Total: 114.9kg

[0046] Processing technology:

[0047] Put 100kg of 30-40 mesh waste tire rubber powder into a high-speed disperser with a deflector plate at a speed of 800-1400r / min, raise the temperature to 80°C, and add 8kg of dipentene, 5kg of clay, and 0.2kg of cuprous chloride in sequence , 0.7kg of polyalkylphenol disulfide, 1kg of ethanol, while shearing at a high speed of 800 rpm, controlling the temperature at about 100°C, changing to a high speed of 1200 rpm after 10 minutes of reaction time, and the reaction ends after 1 minute , cooling and discharging to obtain the modified rubber powder after catalytic activation.

[0048] The performance comparison after ble...

Embodiment 2

[0054] Formula: Based on 40 mesh waste tire rubber powder, the weight of each component is:

[0055] 40 mesh waste tire rubber powder 100kg

[0056] Dipentene 12kg

[0057] Clay 5kg

[0058] Cuprous chloride 0.4kg

[0059] Polyalkylphenol disulfide 1kg

[0060] Ethanol 2kg

[0061] Total: 120.4kg

[0062] Processing technology is with the processing technology of above-mentioned embodiment 1.

[0063] The car tire crown made by mixing the activated rubber powder prepared in this example with the rubber material is compared with the performance of the car tire crown made by the rubber material without adding the rubber powder as follows:

[0064] project No powder added 5 parts modified rubber powder Vulcanization time, 137℃ / min

[0065] It can be seen from the test results that adding activated rubber powder can improve the dynamic performance of the rubber compound, and its processing performance is good, raw rubber is saved, costs are reduced, and all p...

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Abstract

The invention provides a method for preparing activated rubber powder by catalytic reaction and activating reaction, and relates to a method for comprehensive utilization of waste and scrap rubber. Compared with the production of regenerated rubber, the method reduces processes of desulfurizing, kneading and refining, thereby avoiding secondary pollution to the environment. The prepared activated rubber powder has excellent compatibility with matrix rubber, and improves the physical and mechanical properties of the product. The formulation comprises the following compositions in weight portion: 100 portions of 30 to 40 meshes of waste rubber powder, 8 to 17 portions of plasticizer-dipentene, 5 to 8 portions of dusting agent-pottery clay, 0.2 to 0.5 portion of catalyst-cuprous chloride, 7 to 1.0 portion of promoting agent-polyalkylphenol disulfide, and 1 to 2.5 portions of dispersing agent-ethanol. The method comprises the following steps: placing the 30 to 40 meshes of waste rubber powder into a high-speed stirring reactor, and heating the waste rubber powder to the temperature of between 80 and 100 DEG C; adding the plasticizer, the dusting agent, the catalyst, the promoting agent and the dispersing agent into the reactor sequentially for reacting for 10 to 20 minutes at a temperature of between 80 and 120 DEG C, and cooling and discharging to produce the activated rubber powder. The prepared activated rubber powder can be used in rubber industry and building industry.

Description

Technical field: [0001] The invention relates to a method for comprehensive utilization of waste rubber. In particular, it is a method for preparing activated rubber powder by catalyzing and activating reaction. Background technique: [0002] In order to comprehensively utilize waste rubber, waste rubber products can be crushed into waste rubber powder and added to the rubber compound for recycling. However, if the untreated waste rubber powder is directly mixed into the rubber compound, since the particle surface of the waste rubber powder is uneven and burr-like, the combination of the matrix glue with it is not good, and the physical and mechanical properties of the rubber compound will be reduced; Moreover, the fineness of the waste rubber powder mixed into the rubber compound also determines the performance and use of the rubber compound produced. The smaller the particle size of the waste rubber powder mixed in, the performance of the rubber compound produced will be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/28C08L21/00
CPCY02W30/62
Inventor 李子安董敏魏申莉邵巍孙景生
Owner TIANJIN RUBBER IND RES INST
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