It is understood that under the new regulatory model, the inspection and quarantine authorities can immediately exchange CCIC personnel for weight identification and quality sampling operations after boarding the ship to implement quarantine inspections. CCIC samples can follow the normal internal commissioning procedures at the fastest speed. IMI completed the testing of related hazardous chemicals projects, achieved seamless integration between inspection and quarantine inspection and third-party inspection, shortened the inspection cycle as much as possible, thereby improving the effectiveness of inspection and quarantine work in the Chemical Zone, and basically eliminating the need for inspection and supervision of enterprises. The impact of logistics and production. At the same time, this model has also created favorable conditions for CCIC and IMI to explore the market in the chemical industry, and achieved a win-win situation for the inspection, quarantine and chemical industry offices, companies, testing centers and CCIC.
Nitrile-butadiene rubber (NBR) is a copolymer of acrylonitrile and butadiene monomers. It is mainly produced by low-temperature emulsion polymerization. It has excellent oil resistance, high wear resistance, good heat resistance and viscosity Relay is strong. The disadvantages are poor low temperature resistance, poor ozone resistance, poor insulation performance and slightly lower elasticity.
Nitrile rubber is mainly used in the manufacture of oil-resistant rubber products. There are five kinds of acrylonitrile content (%) in nitrile rubber, such as 42-46, 36-41, 31-35, 25-30, 18-24. The higher the acrylonitrile content, the better the oil resistance, but the corresponding decrease in the cold resistance. The operating temperature is -50°C to 120°C
Nitrile rubber is mainly used to make oil-resistant products, such as oil-resistant pipes, tapes, rubber films and large oil bladders, etc. It is often used to make various oil-resistant molded products, such as O-rings, oil seals, leather cups, diaphragms, valves, bellows , hoses, seals, foam, etc., also used to make rubber sheets and wear-resistant parts.
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