What are the advantages and disadvantages of plastic raw materials GPPS?

January 11, 2023

GPPS plastics are also known as general-purpose polystyrene, or GPPS for short. Polystyrene (PS) is polymerized from styrene monomer (SM) and can be polymerized by various synthetic methods. Currently, bulk polymerization and suspension polymerization are mainly used in the industry. PS is a thermoplastic non-crystalline resin, which is mainly classified into general-purpose polystyrene (GPPS, commonly known as benzene), impact-resistant polystyrene (HIPS, commonly known as benzene) and foamed polystyrene (EPS). .

The plastic raw material GPPS is a colorless, odorless, odorless, and transparent, transparent plastic granule. Its characteristics are light weight, low price, low water absorption, easy coloring, good dimensional stability, deformation resistance, good electrical conductivity, transparent color and easy processing. The plastic raw material GPPS can be dissolved in aromatic hydrocarbons, chlorinated hydrocarbons, aliphatic ketones and esters but dissolves and swells in acetone. It is resistant to certain mineral oils, organic acids and bases, salts, lower alcohols and its aqueous solutions. The water absorption rate is low, and its mechanical properties and dimensional stability can be maintained in a humid environment. Excellent electrical properties, volume resistance and surface resistance are very high, and will not be affected by changes in temperature and humidity, and will not be affected by corona discharge. Radiation resistance is also better.

The main disadvantage of the plastic raw material GPPS is that the texture is brittle and easy to crack, the impact strength is low, the heat resistance is poor, the boiling water cannot be resisted, and it can be used only at a lower temperature and a lower load. Poor sunlight resistance and relatively easy to burn. It is black when burning and has a special odor.

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