Chemical resistance of SPS

APS is resistant to acids and alkalis but is not resistant to organic solvents. The crystallization of SPS provides resistance to organic solvents in addition to the resistance to acids and alkalis. Table 13.7 summarizes the chemical 

TABLE 13.7 Chemical Resistance of Glass Fiber-Reinforced SPS, PA66, and PBTaHCl/H 

After immersion for 30 days excellent O, good A, swell x, erosion, dissolution. 

The precise control of the stereoregularity gave birth to a new engineering plastic on the basis of styrene monomer as a very common chemical therefore, SPS is very cost competitive. SPS will be widely used as an engineering plastic in the market based on its unique properties, especially its electrical properties. 

Viscoelastic Properties of Polymers, John Wiley Sons, New York, 1980. 

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Industrial applications of SPS take advantage of the heat, dimensional stability, and chemical resistance of SPS. For example, liquid-filled transformer components require long-term exposure to the mineral oils used for coolants as well as heat resistance to handle the elevated temperatures that occur during peak demand periods. 

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