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High-performance regenerated rubber and preparation method thereof

A reclaimed rubber, high-performance technology, applied in the field of high-performance reclaimed rubber and its preparation, can solve the problems of high energy consumption in the regeneration process and poor quality of reclaimed rubber, and achieve the effect of good regeneration effect, improved quality and easy realization.

Inactive Publication Date: 2012-10-03
HUBEI UNIV OF TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] Aiming at the disadvantages of high energy consumption and poor quality of reclaimed rubber in the existing rubber regeneration process, the inventors started by improving the regeneration method and process of waste rubber powder, thereby reducing the pollution in the regeneration process of waste rubber powder, retaining the main chain of rubber, and preparing high-quality rubber. Performance reclaimed rubber, expanding the application field of reclaimed rubber

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  • High-performance regenerated rubber and preparation method thereof

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preparation example Construction

[0024] (1) Improve the preparation formula of waste rubber regeneration. Usually the composition of recycled rubber mainly consists of rubber powder, regeneration activator, softener, activator, tackifier, plasticizer and so on. The main components of the reclaimed rubber prepared by the present invention include waste tire rubber powder, ethyleneamines (diethylenetriamine, triethylenetetramine, tetraethylenepentamine) regeneration activators, petroleum resin softeners, and molecular sieve adsorbents. Their ratio (weight ratio) is 100:2-8:4-12:4-10 in turn.

[0025] (2) Improve the preparation method and process of regenerated rubber: based on the effect of chemical agents, combined with the effect of mechanical field to achieve the purpose of rubber powder regeneration. Mix the rubber powder, regeneration activator, softener and molecular sieve evenly, add it into the reactor, use the three-dimensional network of rubber that reacts in the reactor first, and make the chemical...

Embodiment 1

[0031] Take 100 parts of 40-mesh waste rubber powder, 4 parts of regeneration activator diethylenetriamine, 8 parts of aromatic (C9) petroleum resin softener, 4 parts of 3A molecular sieve adsorbent, stir and mix evenly and add to the reactor. The temperature is 180°C, and the reaction time is 3 hours. The regeneration activator and softener effectively penetrate the three-dimensional network structure of the rubber to make the rubber swell. Use cooling water to cool, reduce the temperature of the material in the reactor to 80°C, take it out and add it to the internal mixer for desulfurization. The temperature parameter of the internal mixer is 180°C, the internal mixing time is 10 minutes, and the speed of the internal mixer is 100 rpm. The desulfurization process first penetrates the regenerated activator and softener into the three-dimensional network of the rubber to make the rubber swell, which is beneficial to the fracture of the cross-linking point, and then uses the she...

Embodiment 2

[0033] In parts by weight, take 100 parts of 100-mesh waste rubber powder, 4 parts of regeneration activator triethylenetetramine, 6 parts of aliphatic (C5) petroleum resin softener, 8 parts of 4A molecular sieve adsorbent, stir and mix evenly Add the reaction kettle, the temperature of the reaction kettle is 180°C, and the reaction time is 1.5 hours. The regeneration activator and softener can effectively penetrate the three-dimensional network structure of the rubber to make the rubber swell. The swollen product from the reactor was taken out and added to the banbury mixer for desulfurization. The temperature parameter of the banbury mixer was 180° C., the banbury time was 8 minutes, and the speed of the banbury mixer was 80 rpm. The desulfurization process uses the regenerated activator softener to penetrate into the three-dimensional network of the rubber to make the rubber swell, which is beneficial to the fracture of the cross-linking point, and then uses the shear force ...

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Abstract

The invention relates to a high-performance regenerated rubber and a preparation method thereof. The regenerated rubber is prepared by performing desulfuration on waste rubber powder. The high-performance regenerated rubber is prepared from the following components in parts by weight: 100 parts of the rubber powder of the waste rubber, 2-8 parts of regeneration activators, 4-12 parts of softening agents and 4-10 parts of molecular sieves. The prepared regenerated rubber has excellent performance, is high in tensile intensity and breakage elongation index, can partially replace natural rubber and synthetic rubber and is used for producing various types of rubber products. In addition, the preparation method is simple and feasible as well as high in efficiency, ensures the product to be excellent in performance, and causes no adverse influence on an environment.

Description

technical field [0001] The invention belongs to the field of waste rubber recovery and reuse, in particular to a high-performance regenerated rubber and a preparation method thereof, in particular to a production method for preparing high-performance regenerated rubber from waste rubber. Background technique [0002] Rubber is a polymer elastomer with a three-dimensional network structure formed by crosslinking raw rubber with sulfur, peroxide and other crosslinking agents under certain conditions. With the development of social economy, the demand for rubber products is increasing year by year. my country is the world's largest rubber consumer, but also a country that is extremely scarce in rubber resources. In 2009, my country's total rubber consumption reached 6.8 million tons, becoming the world's largest rubber consumer, of which more than 2 million tons of natural rubber and 1.6 million tons of synthetic rubber need to be imported. At the same time, my country is the...

Claims

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Application Information

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IPC IPC(8): C08L17/00C08L57/02C08K7/24
Inventor 彭少贤赵西坡
Owner HUBEI UNIV OF TECH
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