Recycled Fiber Reinforced Plastic Wood Composite Material

At present, although there have been relevant studies on the recycling of fiber reinforced composite (FRP) waste, generally speaking, the process is complex, difficult to process, and costly. For example, the application technology of FRP waste in wood-plastic building formwork discloses that the FRP waste added is in powder form, and the particle size is further limited. This undoubtedly increases the workload of the FRP waste crushing process and increases the processing cost.At the same time, the regenerated fibers obtained after FRP waste is crushed have different shapes. According to the size and shape of the fibers, they can be divided into eight different types of regenerated fibers.Flocculated regenerated fiber is one of them (flocculated regenerated fiber refers to a state of fiber-reinforced composite materials during the crushing process.This state is between powdery and fibrous, and the crushing cost is much lower than that of powdery regenerated fiber), and its processing cost is lower than that of powdery regenerated fiber.And each crushing process of FRP waste can produce a certain amount of regenerated flocculent fibers, so the production of flocculent regenerated fibers is very large. However, there is currently little research on the application of flocculent regenerated fibers.

Therefore, how to provide a flocculent regenerated fiber-reinforced wood-plastic composite material and its preparation method, and conduct innovative research on the recycling and utilization of flocculent regenerated fibers,It is necessary to consume a large amount of regenerated flocculent fibers, while also increasing the added value of the product and reducing costs. This is an urgent problem to be solved in this field.A kind of flocculent regenerated fiber reinforced wood-plastic composite material and its preparation method were born. The method is simple, the production cost is low, the flocculent regenerated fiber accounts for a large proportion, and the prepared product has high static bending strength and high flexural elastic modulus.

This technology innovatively applies flocculent regenerated fibers to the field of wood-plastic composite materials, increasing the static bending strength of wood-plastic composite materials by about 2 times compared with the original.The Vicat softening point of wood-plastic composites added with regenerated flocculent fibers increases, which improves the heat resistance of wood-plastic composites;The production volume of flocculent regenerated fiber is large and the crushing cost is low, which reduces the processing cost of FRP waste.At the same time, it also reduces the production cost of wood-plastic composite materials; the preparation method is simple, the production cost is low, flocculent regenerated fiber accounts for a large proportion, and a large amount of flocculent regenerated fiber is consumed, which is beneficial to environmental protection, and the prepared product has high static bending strength , high bending elastic modulus; the matrix is thermoplastic resin, and the wood-plastic product can still be recycled after it has exerted its use value.