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On August 24, a new high-end environmentally friendly nitrile nitrile rubber NBR2805E specially developed by Lanzhou Chemical Industry Research Center for automotive seals was delivered to the customers of
Anhui Zhongding Seal Co.
, Ltd.
After testing by authoritative departments, all indicators meet the requirements of
high-grade product indicators.
This marks the addition of "new but" to environmentally friendly nitrile rubber, and domestic nitrile nitrile rubber will be used in the manufacture
of automotive dynamic sealing materials for the first time.
Nitrile rubber for sealing materials not only requires a balance of low temperature, elasticity and oil resistance, but also requires high aging resistance and low mold contamination performance, which is extremely
difficult to produce 。 Through technical research, the researchers of Lanzhou Chemical Industry Research Center successfully solved the problem of uneven distribution of bound acrylonitrile links in the copolymer, poor oil resistance and low temperature resistance of the product due to the large difference in monomer competition rate when the low-temperature emulsion copolymerization.
The contradiction between low molecular polymer content and low Mooney viscosity control required by high-end sealing materials is resolved, so that Mooney viscosity is stable and controlled in a low range, ensuring good processing performance; It further optimizes and solves the problem of aging resistance in long-term use, develops long-term aging protection technology, and produces environmentally friendly NBR2805E new products
that meet customer requirements.
Tested by authoritative departments, NBR2805E new product not only has excellent oil resistance, ozone resistance, wear resistance and chemical corrosion resistance and extraordinary chemical stability, but also has good processing performance and physical and mechanical properties, to meet the special requirements
of sealing products used under harsh conditions.
It is understood that this batch of NBR2805E nitrile rubber new products will be used in the production of automotive dynamic sealing materials
.
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