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Method for preparing activated rubber crumb by catalysis and activation reaction

A technology of activating rubber powder and reaction, which is applied in recycling technology, plastic recycling, etc., can solve the problems of physical and mechanical properties of rubber materials, poor blending and substitution effects, poor bonding of matrix glue, etc., and improve physical and mechanical properties , improve dynamic performance and use effect, save the effect of desulfurization

Inactive Publication Date: 2011-01-26
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 waste tire rubber powder of 30-40 mesh into a high-speed disperser with deflector at a speed of 800-1400r / min, heat up to 80℃, add 8kg dipentene, 5kg clay, and 0.2kg cuprous chloride in sequence , 0.7kg polyalkylphenol disulfide, 1kg ethanol, and at the same time use 800 rpm high-speed shear, control the temperature at about 100 ℃, the reaction time after 10 minutes change to high-speed 1200 rpm, the reaction is over after 1 minute , Cool the discharge to obtain modified rubber powder after catalytic activation.

[0048] The performance comparison of 10 parts of 60 mesh ordinary waste rubber powder and 10 parts of 40 mesh activ...

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] The processing technology is the same as the processing technology of Example 1 above.

[0063] The performance of an automobile tire crown made by mixing the activated rubber powder prepared in this example into the rubber compound and the automobile tire crown made by the rubber compound without rubber powder is as follows:

[0064] project

[0065] It can be seen from the test results that the addition of activated rubber powder improves the dynamic performance of the rubber compound, its process performance is good, the raw rubber is saved, and the cost is reduced. The performance indicators of the tread have reached the original national standards.

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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 activatedrubber 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 material for recycling. However, if the untreated waste rubber powder is directly mixed into the rubber material, the surface of the particles of the waste rubber powder is uneven and burr-like, which makes the matrigel not well combined with it, which will reduce the physical and mechanical properties of the rubber material; In addition, the fineness of the waste rubber powder blended into the rubber compound also determines the performance and use of the rubber compound. The smaller the particle size of the waste rubber powder blended, the better the performance of the rubber compound. But the cost will ...

Claims

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Application Information

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Patent Type & Authority Patents(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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