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Production method and combination material formula of environment-friendly high-strength reclaimed butyl rubber

A production method and an environment-friendly technology are applied in the production of environment-friendly high-strength butyl reclaimed rubber and the formulation of its combined materials, which can solve the problems of insufficient desulfurization, product environmental protection indicators failing to meet environmental protection requirements, and high Mooney viscosity.

Inactive Publication Date: 2013-09-04
NANTONG HUILI RUBBER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are more than 30 enterprises producing butyl reclaimed rubber in my country, all of which are ordinary butyl reclaimed rubber. At present, most of the raw materials used by domestic reclaimed rubber enterprises are scrapped butyl inner tubes, and there are no strict standards for the selection of raw materials. It’s just that after cutting the purchased butyl inner tube, some are regenerated by high-temperature dynamic desulfurization tank, and some are kneaded by kneader, and then regenerated by temperature and shear force. The temperature is generally 180-220 degrees. Among them, the butyl regenerated rubber produced has high Mooney viscosity and insufficient desulfurization, and the softener added in the production process is ordinary rubber oil. Therefore, the environmental protection indicators of the produced products do not meet the environmental protection requirements of the European Union

Method used

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  • Production method and combination material formula of environment-friendly high-strength reclaimed butyl rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Select 100 parts of high-quality waste butyl inner tubes with a strength above 9MPa, crush them into flakes, select at least a 2-4 mesh screen to sieve, and then use a magnetic separator to remove the iron wire from the sieved rubber powder. Add 2 parts of environmentally friendly rubber softener and 2 parts of reinforcing agent to the above-mentioned rubber powder that has been sieved and magnetically separated. In this embodiment, the environmentally friendly rubber softener is selected as paraffin oil, and the selected reinforcing agent is Composed of high-reinforcing carbon black. Then stir to form a combined material; use high temperature and atmospheric pressure desulfurization and oil extraction for the above-mentioned combined material after stirring, and the high temperature is controlled at 400°C; then it is refined on a refiner, and the number of passes is one roll; Then filter in the filter, using filter mesh at least 60 mesh; finally shape.

Embodiment 2

[0048] Select 100 parts of high-quality waste butyl inner tubes with a strength above 9MPa, crush them into flakes, select at least a 2-4 mesh screen to sieve, and then use a magnetic separator to remove the iron wire from the sieved rubber powder. Add 5 parts of environmentally friendly rubber softener and 1 part of reinforcing agent to the above-mentioned rubber powder that has been sieved and magnetically separated. In this embodiment, the environmentally friendly rubber softener is selected to be composed of naphthenic oil, and the selected reinforcing agent is Made of highly reinforced resin. Then it is stirred to form a combined material; the above-mentioned combined material after stirring is subjected to high temperature and normal pressure desulfurization and oil quenching, and the high temperature is controlled at 230°C; then it is refined on a refiner, and the number of passes is twice. ; Then filter in a filter, using a filter mesh of 60 mesh; finally shape.

Embodiment 3

[0050] Select 100 parts of high-quality waste butyl inner tubes with a strength above 9MPa, crush them into flakes, select at least a 2-4 mesh screen to sieve, and then use a magnetic separator to remove the iron wire from the sieved rubber powder. Add 4 parts of environmentally friendly rubber softener and 1.5 parts of reinforcing agent to the above-mentioned rubber powder that has been sieved and magnetically separated. In this example, the selected environmentally friendly rubber softener is composed of naphthenic oil, and the selected reinforcing The agent is composed of highly reinforcing carbon black. Then stir to form a combined material; use high temperature and normal pressure desulfurization and oil extraction for the above-mentioned combined material after stirring, and the high temperature is controlled at 310°C; then it is refined on a refiner, and the number of passes is once; Then filter in a filter, using a filter mesh of 70 mesh; finally shape.

[0051] In the p...

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Abstract

The invention discloses a production method of environment-friendly high-strength reclaimed butyl rubber, which comprises the following steps: selecting good quality waste butyl rubber inner tube, and crushing into sheets; screening and magnetic separation; adding environment-friendly rubber softener and reinforcing agent for stirring so as to form a composition material; desulfuration and extraction; refining; filtering; and forming. According to the invention, the reclaimed butyl rubber is ensured in quality as good quality butyl rubber material is selected; the reclaimed butyl rubber conforms to requirements of environment-friendly laws and regulations of European Union as no contaminative rubber softener is added during the regeneration process, and also extracting process is added for extracting original rubber aromatic oil. The invention also discloses a composition material formula of the reclaimed butyl rubber. According to the invention, through improving formula processes and finely selecting raw materials, the tensile strength of the produced reclaimed butyl rubber is kept in the range of 8.5-9.5 MPa which is far higher than the national standard of being larger than or equal to 6.8 MPa.

Description

Technical field [0001] The invention relates to a production method of butyl reclaimed rubber, in particular to a production method of environmentally friendly high-strength butyl reclaimed rubber and a formula of combined materials. technical background [0002] With the rapid development of innertube butylation, more and more butyl innertubes are scrapped. According to statistics, more than 1 million tons of butyl innertubes are scrapped every year in the world. How to effectively use these discarded butyl innertubes has become the rubber industry in all countries. Major issues of concern to the world. [0003] At present, there are more than 30 butyl reclaimed rubber companies in China, all of which produce ordinary butyl reclaimed rubber. At present, most of the raw materials used by domestic reclaimed rubber companies are scrap butyl inner tubes, and there are no strict standards for the selection of raw materials. Only after cutting the purchased butyl inner tube, some are r...

Claims

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Application Information

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IPC IPC(8): C08J11/10C08L23/22C08K5/01C08K3/04
CPCY02P20/582Y02W30/62
Inventor 倪雪文施兆丰周洪王郁辉
Owner NANTONG HUILI RUBBER
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