Wood-plastic composite material and prepration method thereof

Abstract

The invention discloses a wood-plastic composite material and a preparation method thereof, and the wood-plastic composite material comprises the following raw materials according to the mixing ratio by parts by weight: 30-80 parts of modified fiber powder; 15-80 parts of plastics; 2-10 parts of phase solvent; 2-10 parts of lubricant; 0-10 parts of stabilizer; 0.2-1.0 part of antioxidant; 5-15 parts of filler; and 2-20 parts of flame retardant. Lignin is utilized for modifying fiber powder, then composition with the plastics is carried out, and a finished-product material is formed by extrusion. The preparation method can solve the problems of the compatibility of wood fibers with the thermoplastic plastics, the surface treatment technology of the raw materials by utilizing the lignin and the like, realize the comprehensive utilization of the lignin and the waste plastics, be capable of replacing wood, increase the additional value of the lignin and solve the utilization problem of the lignin wastes. The manufactured wood-plastic composite material can significantly improve the mechanical performance, the tensile strength, the flexural strength and the impact resistance, and realize the industrial production of high-performance products, such as construction materials.

Description

technical field

[0001] The invention relates to a composition containing lignin material and a preparation method thereof, in particular to a wood-plastic material containing lignocellulose material and a preparation method thereof. Background technique

[0002] Wood-plastic composite material is a new type of engineering material, which is made of wood fiber and plastic as the main raw materials. As a wood-plastic composite material, it has excellent water resistance and corrosion resistance, insect resistance, good dimensional stability, flexible production process, and little damage to equipment. It can also be made from recycled waste wood and plastic as raw materials, and can be recycled. It has attracted much attention due to its advantages in use.

[0003] However, because wood fiber and plastic are two kinds of polymers with different properties, the compatibility of untreated wood fiber and plastic is poor, and the combination of plastic and plant fiber is poor, wh...