Polyether ester chemical resistance
Release time:
2022-04-11 11:59
Source:
Chemical Resistance
Polyether ester elastomers have excellent oil resistance and can withstand most polar liquid chemical media (such as acids, bases, amines, and glycol compounds) at room temperature, but are ineffective against halogenated hydrocarbons (except for chlorofluorocarbons) and phenols. Their hardness against chemical substances increases with the increase in hardness. Polyether ester elastomers exhibit good anti-swelling and anti-permeability properties against most organic solvents, fuels, and gases, with fuel permeability only 1% of that of oil-resistant rubbers such as chloroprene rubber, chlorosulfonated polyethylene, and nitrile rubber.
However, polyether ester elastomers have poor resistance to hot water, and the addition of polyimide stabilizers can significantly improve their hydrolysis resistance. It is reported that introducing PEN or PCT into the PBT hard segments of the polyether ester elastomer molecular chain can yield polyether ester elastomers with better water resistance and heat resistance.
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