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Activated rubber powder and preparation method thereof

A technology for activating rubber powder and rubber powder, which is used in building components, building insulation materials, buildings, etc., can solve the problems of insignificant modification effect of asphalt, irritating odor, unfriendly environment, etc., so as to improve the production environment and on-site The effect of construction environment, reducing irritating odor, and strong wear resistance

Inactive Publication Date: 2020-04-17
雅安和鑫橡塑有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing ordinary rubber powder produces a pungent smell in the modified asphalt, which is not friendly to the environment, and the modification effect on the asphalt is not obvious. The purpose is to provide an activated rubber powder and its preparation method , to solve the problem that the existing ordinary rubber powder has no obvious modification effect on asphalt, and will emit a large amount of carbon dioxide and hydrogen sulfide and other gases during use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] An activated rubber powder of the invention comprises the following components: rubber powder, swelling agent, deodorant and reinforcing agent.

[0033] The present invention uses swelling agent, deodorant and reinforcing agent to modify ordinary rubber powder to prepare activated rubber powder; the activated rubber powder can significantly increase the sol content of rubber powder and ensure the activation effect of rubber powder , and can properly reduce the reaction temperature; as an auxiliary agent, the deodorant participates in the modification of rubber powder, which can change the taste of rubber powder, and when the activated rubber powder is added to make modified asphalt, it can alleviate the taste of gas; It can improve the physical and mechanical properties of active rubber powder and increase the peel strength of modified asphalt. The active rubber powder prepared by the invention is used as an asphalt modifier, which has good plasticity, good weather resi...

Embodiment 2

[0038] Based on Example 1, preferably, the mass ratio of rubber powder to swelling agent is 12:1, the mass ratio of rubber powder to reinforcing agent is 180:1, and 0.023ml of deodorant is added to every 1kg of rubber powder.

[0039] The activated rubber powder prepared according to the above ratio not only has stable performance and uniform dispersion, but also can significantly improve the performance of asphalt in modified asphalt. In combination with the cost of raw materials, process operation costs and comprehensive performance of modified asphalt, the present invention chooses The best ratio value.

Embodiment 3

[0041] Based on above-mentioned embodiment, a kind of preparation method of activated rubber powder comprises the following steps:

[0042] S1, using waste rubber as raw material to prepare 30-100 purpose rubber powder;

[0043] S2. Add swelling agent, deodorant and reinforcing agent to the 30-100 mesh rubber powder obtained in step S1. After mixing, put the mixture into a desulfurization tank, and then feed steam at a certain pressure into the desulfurization tank. When the pressure in the desulfurization tank reaches 3.5Mpa, release the pressure and exhaust to obtain modified rubber powder. The mass ratio of rubber powder to swelling agent is 8-15:1, and the mass ratio of rubber powder to reinforcing agent is 185. -190:1, add a certain proportion of deodorant per 1kg of rubber powder;

[0044] S3. Cool the modified rubber powder to below 40°C, and then use a vibrating sieve with a 20-mesh screen to remove the agglomerated rubber powder, then measure and pack it to obtain th...

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Abstract

The invention discloses an activated rubber powder and a preparation method thereof. The activated rubber powder comprises the following components: a rubber powder, waste engine oil, an essence and astrong resin. The preparation method of the activated rubber powder comprises the following steps: preparing 60-mesh rubber powder by taking waste tires as raw materials; adding waste engine oil, theessence and the strong resin into 60-mesh rubber powder, mixing, putting an obtained mixture into a desulfurization tank, introducing 0.3 Mpa of steam into the desulfurization tank, and releasing pressure and exhausting when the pressure in the desulfurization tank reaches 0.9 Mpa to obtain a modified rubber powder; and cooling the modified rubber powder to below 40 DEG C, screening out caked rubber powder by using a vibrating screen paved with a 20-mesh screen, metering, and packaging to obtain the finished product activated rubber powder. The preparation method is used for solving the problems that the existing common rubber powder has unobvious modification effect on asphalt and can discharge a large amount of carbon dioxide, hydrogen sulfide and other gases in the use process.

Description

technical field [0001] The invention relates to a rubber powder and a preparation method thereof, in particular to an activated rubber powder and a preparation method thereof. Background technique [0002] Rubber powder refers to the powdered rubber material obtained by crushing waste rubber products. Generally, rubber powder is mainly used in low-grade products in large quantities, and can also be used in a small amount in the tread to reduce the dynamic heat generation life of the tire. For example, the midsole of shoes is mixed with 100 parts or more. It is used in building materials, such as laying sports grounds, laying track bed foundations, shock absorption, noise reduction and other occasions. Add rubber powder to asphalt products at high temperature and mix well for paving and roof waterproofing. [0003] At present, ordinary rubber powder is generally used to modify asphalt. The commonly used ordinary rubber powder is vulcanized rubber powder. Vulcanized rubber p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L19/00C08L63/10C08L77/00C08L61/06C08L95/00
CPCC08L19/003C08L95/00C08L2201/08C08L63/10C08L77/00C08L61/06
Inventor 谭书文白林涛杨德治
Owner 雅安和鑫橡塑有限责任公司
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