Glass fiber is a kind of inorganic nonmetallic material with excellent performance, and there are many kinds. Its advantages are good insulation, strong heat resistance, good corrosion resistance and high mechanical strength, but its disadvantages are brittleness and poor wear resistance.
First, the role of glass fiber
1. Enhance rigidity and hardness. The increase of glass fiber can improve the strength and rigidity of plastics, but the toughness of the same plastics will decrease. Example: flexural modulus;
2, improve heat resistance and thermal deformation temperature; Taking 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 ordinary glass fiber reinforced nylon can reach above 220 degrees;
3. Improve dimensional stability and reduce shrinkage;
4, reduce warping deformation;
5, reduce creep;
6, the flame retardant performance will interfere with the flame retardant system and affect the flame retardant effect because of the wick effect;
7. Reduce the gloss 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, while the long fiber will improve the impact strength. In order to make the brittleness of materials not decrease greatly, it is necessary to choose a certain length of glass fiber.
Conclusion: To obtain good impact strength, the surface treatment of glass fiber and the length of glass fiber are very important!
Fiber content: The fiber content of the product is also a key issue. China generally adopts integer contents such as 10%, 15%, 20%, 25% and 30%, while foreign countries determine the content of glass fiber according to the use of products.
Second, the application field
Glass fiber products are widely used in various fields of national economy, among which electronics, transportation and construction are the three main application fields, which also represent the development trend of the world glass fiber industry in the next few years.
Post time: Mar-28-2023