1. What is the product made of :

PS (polystyrene plastic) refers to a class of plastics including styrene groups in the macromolecular chain, including styrene and its copolymers. Its characteristics are colorless, odorless and tasteless.

PS is a relatively old plastic. After many years, its production process is relatively perfect. PS has good transparency (light transmittance of 88%-92%) and surface gloss, easy to dye, high hardness, good rigidity, in addition, good water resistance, chemical resistance and processing flow properties. Its main disadvantages are: brittleness, low impact strength, easy stress cracking, poor heat resistance, etc.

2. What is the Features of PS Material :

Insulation performance: It can maintain stable electrical performance even in humidity and high temperature, and is an ideal material for manufacturing electronic and electrical parts

Molding processability: Due to the fast crystallization speed and good fluidity, the mold temperature is also lower than other engineering plastics. When processing thin-walled parts, it only takes a few seconds, and it only takes 40-60s for large parts.

3. Is the PS material food grade?

PS plastic can be used as food-grade plastic. But it still needs attention when used at high temperature. Once it exceeds 80 degrees Celsius, if it is used for a long time, it will easily decompose toxic substances, so it is food-grade plastic. At that time, it is also easy to produce toxic substances.
PS plastic has good low temperature resistance, and its embrittlement temperature is -30 degrees Celsius, so it can be used in an environment of minus 20 degrees Celsius, and it is often used as containers such as yogurt cups.

4. Comparison of PP and PS:

The PS material is relatively hard, so the sound of percussion sounds crisper. The PP material has good toughness and insufficient hardness, so the sound is dull. PS can be very transparent, PP is most transparent, but it still looks mushy, like ground glass. pp has good toughness, while ps is relatively rigid, and it feels that pp is softer than ps. In general, for pp and ps products with the same thickness, transparency ps>pp, hardness ps>pp, toughness pp>ps.