1. The strength and rigidity of plastics can be increased with the increase of glass fiber, but the toughness of the same plastics will be decreased. Example: bending modulus;

2. Take nylon as an example, the thermal deformation temperature of nylon with glass fiber is increased by at least two times, and the temperature resistance of general glass fiber reinforced nylon can reach over 220 ℃;

3. Improve dimensional stability and reduce shrinkage;

4. Reduce warpage;

5. Reduce creep;

6. Because of the wick effect, it will interfere with the flame-retardant system and affect the flame-retardant effect;

7. Reduce the glossiness of the surface;

8. Increase hygroscopicity;

9. Glass fiber treatment: the length of glass fiber directly affects the brittleness of materials. If the glass fiber is not treated well, the short fiber will reduce the impact strength, and the long fiber will improve the impact strength. In order to keep the brittleness of materials from decreasing greatly, it is necessary to choose a certain length of glass fiber.

Conclusion: in order to obtain good impact strength, the surface treatment and the length of glass fiber are very important!

Fiber content: the fiber content of the product is also a key issue. In China, 10%, 15%, 20%, 25%, 30% and other integer contents are generally adopted, while in foreign countries, the content of glass fiber is determined according to the purpose of the product.