Interfacial compatilizer, preparation method of interfacial compatilizer and application method of interfacial compatilizer to wood plastic composite

Abstract

The invention discloses an interfacial compatilizer, a preparation method of the interfacial compatilizer and an application method of the interfacial compatilizer to a wood plastic composite, relates to the interfacial compatilizer applied to the wood plastic composite and the preparation method and the application method thereof and solves the problem that the existing interfacial compatilizer has a poor interface modification effect and large addition amount in the application process so that the mechanical property of the wood plastic composite cannot be further improved. The interfacial compatilizer is prepared from an isocyanate silane coupling agent, dicumyl peroxide and polypropylene through melt extrusion. The application method of the interfacial compatilizer to the wood plastic composite comprises the following steps of: after uniformly mixing wood powder, the polypropylene, the interfacial compatilizer and an antioxidant 1010, feeding the mixture into a double-screw extruder to process the mixture and then carrying out molding. The interfacial compatilizer is a polymer interfacial compatilizer with isocyanate groups and siloxy groups. The preparation method of the interfacial compatilizer has simple process and concise steps. The prepared wood plastic composite has tensile strength of 27.27 to 39.11MPa and flexural strength of 42.4 to 59.07MPa.

Description

technical field [0001] The invention relates to an interface compatibilizer applied to wood-plastic composite materials, its preparation method and its application method, in particular to an isocyanate silane functionalized polypropylene interface compatibilizer, its preparation method and its application method. Background technique [0002] Wood-plastic composite material is an environmentally friendly composite material that has emerged in recent years. It is processed by a certain proportion of polymer matrix and wood fiber (wood powder, bamboo powder, rice husk, straw, etc.). Since the 1990s, wood-plastic composite materials have developed very rapidly, and they are mainly used in outdoor decoration, corridor panels, stairs, guardrails and a small amount of civilian consumer goods. The polymer matrix for preparing wood-plastic composite materials includes thermosetting polymers and thermoplastic polymers, and thermoplastic polymers can be recycled and continuously prod...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing interface compatibilizer has poor interface modification effect in application and is added in a large amount, which leads to the problem that the mechanical properties of wood-plastic composite materials cannot be further improved. The present invention provides an interface phase compatibilizer Compatible agent, its preparation method and its application method in wood-plastic composite material