Common Problem
ABS physical and chemical performance indicators
2020/7/15 9:03:46   271

ABS plastic

Chemical name: Acrylonitrile-butadiene-styrene copolymer

English name: Acrylonitrile Butadiene Styrene

Specific gravity: 1.05 g/cm3 Mold shrinkage: 0.4-0.7%

Molding temperature: 200-240℃ Drying conditions: 80-90℃ 2 hours


Features:

1. Good overall performance, high impact strength, chemical stability, and good electrical properties.

2. Good weldability with 372 plexiglass, made of two-color plastic parts, and can be chrome-plated and painted.

3. There are high impact resistance, high heat resistance, flame retardant, reinforced, transparent and other levels.

4. The fluidity is a bit worse than HIPS, better than PMMA, PC, etc., and it has good flexibility.


Uses: suitable for making general mechanical parts, wear-reducing and wear-resistant parts, transmission parts and telecommunication parts.


Molding characteristics:

1. Amorphous material, medium fluidity, high moisture absorption, and must be fully dried. Plastic parts requiring gloss on the surface must be preheated and dried for a long time at 80-90 degrees for 3 hours.

2. It is advisable to take high material temperature and high mold temperature, but the material temperature is too high and easy to decompose (the decomposition temperature is >270 degrees). For plastic parts with higher precision, the mold temperature should be 50-60 degrees, which is resistant to high gloss. For thermoplastic parts, the mold temperature should be 60-80 degrees.

3 If you need to solve the water trapping, you need to improve the fluidity of the material, adopt high material temperature, high mold temperature, or change the water level and other methods.

4. If heat-resistant or flame-retardant materials are formed, plastic decomposition products will remain on the mold surface after 3-7 days of production, which will cause the mold surface to shine. The mold needs to be cleaned in time, and the mold surface needs to increase the exhaust position.