Polypropylene long glass fiber general grade granules plasticLFT® PP LGF is a polypropylene Homopolymer or Copolymer with 20%-60% long glass fibre reinforcement which leads to a very high stiffness and strength even at higher temperatures. Furthermore, it is heat stabilised and therefore perfectly suitable for industrial applications as well as for applications in the sports and leisure sector which are exposed to higher temperatures.Which Is Better, Homopolymer or Copolymer?It depends. Neither homopolymer nor copolymer is better than the other. It will depend on the application as to which is more desirable. Homopolymers are better suited to high-strength and high hardness applications, whereas copolymers are suited for corrosion resistance and high operating temperatures. Although a raw homopolymer has better mechanical properties, copolymers have better mechanical properties when reinforced with glass over glass-reinforced homopolymer. This is because copolymers are better suited to adhering to fibers.

Are long fiber reinforced composites suitable for other processes besides injection molding?

In addition to injection molding, LFT long glass fiber and long carbon fiber can also be used for extrusion of sheets, profiles, pipes and molding, among which injection molding is the most common.

Under what circumstances can long fiber replace short fiber? What are the common alternative materials?

Traditional staple fiber materials can be replaced with long glass fiber and long carbon fiber LFT materials in the case of customers whose mechanical properties cannot be met or where higher metal substitutes are desired. For example, PP long glass fiber is often replacing nylon reinforced glass fiber , and nylon long glass fiber is replacing PPS staple fiber material, etc.