The Advantages of ABS Plastic in Injection Molding

Plastic ABS is the polymer with the largest output and the most extensive application. It organically unifies various properties of PB, PAN, PS, and has excellent mechanical properties of toughness, rigidity, and rigidity. Most ABS is non-toxic and impervious to water, but slightly permeable to water vapor, and has low water absorption rate. The water absorption rate at room temperature is less than 1% for one year and the physical properties do not change. 

 

The advantages of ABS in injection molding:

 

1 Amorphous material, medium fluidity, large moisture absorption, must be fully dried, plastic parts with glossy surface must be preheated and dried for 80-90 degrees for 3 hours. 

 

2  High material temperature and high mold temperature should be taken, but the material temperature is too high and easy to decompose (decomposition temperature is> 270 ℃). For plastic parts with higher precision, the mold temperature should be 50-60 ℃. , The mold temperature should be 60-80 ℃. 

 

3 If you want 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. 

 

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

 

5 The molding shrinkage rate is small, and it is easy to melt cracking and stress concentration, so the molding conditions should be strictly controlled during molding, and the plastic parts should be annealed after molding. 

 

6 Mold temperature has a great influence on the quality of plastic parts. When the mold temperature is low, the shrinkage, elongation, impact resistance, bending, compression, and tensile strength are low. When the mold temperature exceeds 120 ° C, the plastic parts cool slowly and easily Deformation sticking mold, difficult demolding, long molding cycle. 

 

Above is the advantage of ABS plastic that applicated in injection molding. Certainly, there are lots of other plastics can be used in injection molding, such as PA, PP, POM, PC….Feel free to contact us at [email protected] to get more information. 

Author: Chris Na