What is the role of plastic material plus glass fiber in injection molding?
Thermoplastics do have natural mechanical properties that confer strength, durability, impact resistance and other benefits in molded plastic parts, while the addition of glass fibers to plastics further enhances the properties of resins.
A problem that may arise in injection molding of materials with glass fiber added is increased brittleness due to the significant improvement in the strength and stiffness of the parts.
However, if glass-filled plastic parts do not need to withstand high impact stress and bending, but only support weight, then it can be an ideal plastic resin for injection molding.
In addition, the range of glass filling percentages can be large (usually 13 to 45 percent), which will accordingly affect the performance of the final part.
If you are considering adding fiberglass to an injection molding process, it is important to be aware that adding fiberglass to molded parts increases strength but also poses risks, as fiberglass may cause internal stress and warping as well as problems with filling rate, cooling rate and shrinkage.
Summary：
Thermoplastics do have natural mechanical properties that confer strength, durability, impact resistance and other benefits in molded plastic parts, while the addition of glass fibers to plastics further enhances the properties of resins.
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Date：
2022-11-30
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