Polyetherester chemical resistance
Release time:
2022-04-11 11:59
Source:
chemical resistance
Polyetherester elastomers have excellent oil resistance and are resistant to most polar liquid chemical media (such as acids, bases, amines and glycol compounds) at room temperature, but are incapable of halogenated hydrocarbons (except Freons) and phenols, Its chemical resistance increases with hardness. Polyetherester elastomers have good swelling resistance and permeability resistance to most organic solvents, fuels and gases, and the permeability to fuels is only 1% of that of oil-resistant rubbers such as neoprene, chlorosulfonated polyethylene, and nitrile rubber. %. /3 to 1/300.
However, polyetherester elastomers have poor hot water resistance, and the addition of polycarbonimide stabilizers can significantly improve their hydrolysis resistance. According to reports, by introducing PEN or PCT into the PBT hard segment in the molecular chain of the polyetherester elastomer, a polyetherester elastomer with better water resistance and heat resistance can be obtained.
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