1. Enhance rigidity and hardness. The increase in glass fiber can improve the strength and rigidity of plastics, but the toughness of the same plastic will decrease.

2. Improve heat resistance and thermal deformation temperature; Taking nylon as an example, with the addition of fiberglass, the thermal deformation temperature of nylon can be increased by at least twice. Generally, fiberglass reinforced nylon can achieve a temperature resistance of over 220 degrees Celsius

3. Improve dimensional stability and reduce shrinkage rate;

4. Reduce warping deformation;

5. Reduce creep;

6. Due to the candle wick effect, the flame retardant performance will interfere with the flame retardant system and affect the flame retardant effect;

7. Reduce surface glossiness;

8. Increase moisture absorption;

9. Glass fiber treatment: The length of glass fiber directly affects the brittleness of the material. If fiberglass is not properly treated, short fibers will reduce impact strength, while long fibers will increase impact strength. To ensure that the brittleness of the material does not decrease significantly, it is necessary to choose a certain length of glass fiber.