In July 2020, China imported SBR 40,490.36 tonnes, up 28.42% month-on-month and 49.66% year-on-year; the import volume of BR was 43,052.68 tonnes, up 19.14% month-on-month and up 117.41% year-on-year; the import volume of SBS was 7654.52 tonnes
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Seal strip can be classified according to section shape, vulcanization method and etc.
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Global market insight recently estimated that the liquid synthetic rubber market will be worth $10.54 billion in 2019 and expects to be worth more than $12 billion by 2026, a compound annual growth rate of 4.7% from 2020 to 2026.
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In July 2020, the national output of synthetic rubber rose to 634,000 tons, up 7.1 percent year on year, and in July 2020, the national output of synthetic rubber was 634,000 tons. From January to July 2020, the national output of synthetic rubber was 3.983 million tons, an increase of 1% year on year.
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In the rubber joint manufacturing industry, the following conclusions can be drawn through practice, according to the concentration of unit calculation, sulfuric acid concentration less than 5 is weak acid, more than 5 is strong acid.
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The cold resistance of NBR was poor. With the increase of acrylonitrile content, the cold resistance of NBR became worse. However, NBR has polarity due to the presence of acrylonitrile, so it has excellent resistance to non-polar and weak polar oils and solvents. Therefore, the higher the acrylonitrile content, the better the oil resistance.
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As the market changing, Foam extrusion products have improved and use more materials to manufacture new seal strips. The versatile product includes EPDM foam extrusion, nitrile foam extrusion, neoprene foam extrusion, and etc.
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Foam extrusion is a kind of rubber seal strip which makes use of the characteristics of some materials and makes the air holes appear in its interior by processing. Foam sealing strip includes EPDM foam sealing strip, silicone foam sealing strip, Pu foam sealing strip.
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EPDM sealing strip has long service life because it has excellent anti-aging function, good chemical resistance, good impact elasticity. Etruded rubber seal mainly used in sealing, absorbing stress and deformation, limit and so on.
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