Straw-containing wood-plastic outdoor floor and production method thereof

Abstract

The invention relates to a formula of a straw-containing wood-plastic outdoor floor and a production method of the straw-containing wood-plastic outdoor floor.The straw-containing wood-plastic outdoor floor comprises, by weight, 100 parts of recycled polypropylene plastics, 150-200 parts of wheat straw wood fiber, 1-3 parts of maleic anhydride grafted polypropylene, 2-5 parts of activated calcium carbonate, 1-3 parts of vinyl amine distearate, 2-8 parts of flake graphite, 1-8 parts of nano-zinc oxide, 10-15 parts of glass fiber, 2-10 parts of ultraviolet absorber UV-327, 5-8 parts of light stabilizer GW-944, 3-12 parts of antioxidant 2,6-tert-butyl-4-methylphenol and 3-6 parts of iron oxide red.The production method includes subjecting wheat straws to airing, impurity removing, pulverizing, screening and drying, subjecting the polypropylene plastics to washing, airing and cutting, drying the auxiliaries, and performing melting, hot pressing and cooling so as to obtain the outdoor floor.The straw-containing wood-plastic outdoor floor is high in durability and ageing resistance and free of natural defects of wood and can be recycled.

Description

technical field [0001] The invention belongs to the field of straw-wood-plastic composite materials, in particular to an outdoor floor made of straw-wood-plastic and a production method thereof. Background technique [0002] As a new type of material, wood-plastic composite material has been favored by people in recent years. Its raw materials are mainly renewable biological resources such as biological straw and processed residual wood, and a certain proportion of plastic is added at the same time. It is a new type of recyclable material processed by physical and chemical means. Compared with ordinary materials, it has strong environmental protection advantages. On the one hand, it is the protection of forest resources, and on the other hand, it is the utilization of discarded plants and plastic waste. Wood-plastic composite materials not only have the woody feeling of wood, but also have the waterproof and corrosion resistance of plastic, and there are no natural defects ...

AI Technical Summary

Problems solved by technology

[0003] In actual use, due to the influence of formula composition, processing methods and environmental factors, wood-plastic flooring will undergo the following changes: (1) Wood-plastic flooring is affected by the environment, and under constant or cyclic force, it often produces creep Deformation, fatigue damage or even fracture; (2) Under natural climate conditions, wood-plastic flooring is constantly affected by climate conditions such as sunlight, rain, and temperature. The wood powder and plastic matrix slowly degrade, the brittleness of the board increases, and the bending resistance decreases; ( 3) In the high temperature in summer, since the wood-plastic floor is a poor conductor of heat, as the temperature changes, the surface and the interior will be heated unevenly, and will continue to expand, shrink, and deform. At the same time, long-term high-temperature exposure will also cause Plastics are oxidatively degraded, and macromolecular chains are broken into small molecules, resulting in a decrease in the mechanical properties of wood-plastic flooring and a shortened lifespan; in addition, under high temperature conditions, ultraviolet radiation will accelerate the oxidation and decomposition of plastics. With the decomposition of plastics, wood-plastic materials The surface will fade obviously; (4) Sunshine and rain under natural climate conditions will slowly degrade the cross-section between the wood substrate and the plastic substrate, and the internal voids of the material will increase, and the water absorption of the material will gradually increase