What is the shrinkage rate of PC/ABS?

The shrinkage rate of plastic materials, also known as the contraction rate, refers to the proportion by which the volume or dimensions of plastic decrease after cooling and solidifying from a molten state during the molding process. It is an important property of plastic materials and directly affects the design of processing techniques such as injection molding and the final dimensional accuracy of the product. PC/ABS alloys are engineering plastic materials with relatively low shrinkage rates, making them suitable for injection molding large parts without deformation. This article will provide a brief introduction to the shrinkage rate of PC/ABS.

1. General-purpose PC/ABS alloy: The shrinkage rate of general-purpose PC/ABS alloy typically ranges from 0.4% to 0.6%. This range of shrinkage rate makes it relatively easy to control during injection molding, effectively meeting the processing requirements for most structural and aesthetic components. For example, components such as appliance housings and automotive interiors often utilize PC/ABS alloy.

2. Flame-retardant PC/ABS alloys: The addition of flame retardants can reduce the shrinkage rate of PC/ABS alloys to some extent. Depending on the flame-retardant rating, the shrinkage rate of flame-retardant PC/ABS alloys ranges from approximately 0.1% to 0.6%.

For certain injection-molded parts that require higher dimensional stability, the shrinkage rate of PC/ABS alloys can be further reduced by adding fillers such as glass fibers.

QINGDAO PRIMETECH PLASTICS CO.,LTD was established in 2007 and has 18 years of experience in the production of modified plastics, coloring, and color masterbatches. We specialize in customized development, with a mature formulation system to ensure products accurately meet customer needs. As a leading modified plastic manufacturer, our product range includes PC/ABS alloys, halogen-free flame-retardant engineering plastics, glass fiber-reinforced modified materials, anti-static materials, medical-grade color masterbatches, and PET fiber-grade color masterbatches. If you have any requirements for modified engineering plastics, please feel free to contact us by phone or leave an online message to communicate directly with our customer service team.