常见问题答疑 Frequently asked questions
1. Does long glass fiber and long carbon fiber injection have special requirements for injection molding machines and molds?
A: There are certainly requirements. especially from the product design structure,as well as the injection molding machine screw nozzle and mold structure injection molding process must consider the requirements of long fiber.
2. What are the differences and advantages of long fiber materials and thermosets and staple fibers?
A：Compared with the short fiber, it has more excellent performance in mechanical properties. It is more suitable for large products and structural parts. It has 1-3 times higher (toughness) than short fiber , and the tensile strength(strength and rigidity) is increased by 0.5-1 times.
Compared with thermosets, it is more environmentally friendly. It can be recycled and reused, and has simple molding efficiency,lower cost etc. But its mechanical properties are worse than thermosets.
3, The product is easy to brittle, so changing to use long fiber reinforced thermoplastic materials can solve this problem?
A: The overall mechanical properties must be improved. The characteristics of long glass fiber and long carbon fiber are the advantages in mechanical properties. It has 1-3 times higher (toughness) than short fiber , and the tensile strength(strength and rigidity) is increased by 0.5-1 times.
4, The Causes and solutions for floating fibers for long glass fiber and long carbon fiber products
A:Due to the low temperature of the sol or the low temperature of the mold and the low injection molding pressure, the glass fiber and the resin can not be well compatible and diffused. The uneven temperature of the mold surface mold will cause the floating fiber problem, and can be solved by increasing the sol temperature, mold temperature and Injection p