Chemical Name: Polystyrene
English name: Polystyrene
Specific gravity: 1.05 g / cm 3
Mold shrinkage: 0.6-0.8%
Molding temperature: 170-250 ° C
Features: excellent electrical insulation (especially high-frequency insulation), colorless and transparent, light transmittance is second only to plexiglass, coloring water resistance, good chemical stability, general strength, but brittle, easy to produce stress cracking , not resistant to benzene, gasoline and other organic solvents.
Uses: Suitable for making insulating transparent parts, decorative parts and chemical instruments, optical instruments and other parts.
Molding characteristics:
1. Amorphous material, small moisture absorption, no need to dry fully, not easy to decompose, but large coefficient of thermal expansion, easy to produce internal stress. Good fluidity, can be formed by screw or plunger injection machine.
2. It is advisable to use high material temperature, high mold temperature, low injection pressure and prolonged injection time to reduce internal stress and prevent shrinkage and deformation.
3. Various forms of gates can be used, and the gates are connected with the circular arc of the plastic parts to avoid damage to the plastic parts when the gates are removed. The drafting angle is large and the ejection is uniform. The plastic parts have uniform wall thickness, preferably without inserts. If the inserts should be preheated.
Retarder, a kind of admixture for concrete, is used to reduce the hydration speed and heat of hydration of cement or gypsum and prolong the setting time. In order to meet the needs of our customers, we can provide you with a variety of different types of retarders for your choice.
This product has good adaptability to cement, with the features of low dosage, high water reduction rate (up to 45%), good fluidity retention performance, With the characteristics of no chlorine and low alkali, it can be effectively incorporated into concrete to save costs.
Concrete Admixture,Hydroxyethyl Acrylate,Admixture Calcium Lignosulphonate,Calcium Lignosulfonate Liquid
Shenyang East Chemical Science-Tech Co., Ltd. , https://www.eastchemy.com