Novel bamboo-plastic composite material

Abstract

The invention relates to a preparation method of a novel bamboo-plastic composite material, in particular to a bamboo-plastic composite material which has excellent mechanical property and is prepared by the step of adding reinforcing material bamboo powder (or bamboo fabric), a flexibilizer and other assistants to polypropylene used as a substrate resin, wherein the bamboo-plastic composite material comprises the following components in parts by mass: 40-100 parts of polypropylene, 40-100 parts of bamboo powder or bamboo fabric, 3-15 parts of compatilizer, 3-15 parts of flexibilizer, 0-5 parts of coupling agent, 0.5-8 parts of lubricant, 0-15 parts of nucleator and 0-8 parts of other assistants. According to the invention, by selecting proper types and proportions of flexibilizer, compatilizer and other assistants, the defect that the impact strength of the composite material is reduced greatly due to the addition of fiber is overcome.

Description

technical field [0001] The invention relates to the preparation of a novel bamboo-plastic composite material. It specifically relates to a bamboo-plastic composite material with superior mechanical properties obtained by adding reinforcement material bamboo powder (or bamboo fiber), toughening agent and other additives, which belongs to the field of material preparation. Background technique [0002] Polypropylene is a thermoplastic resin obtained by free radical polymerization of propylene monomers. According to the order of methyl groups, there are three types: isotactic polypropylene, atactic polypropylene and syndiotactic polypropylene. Industrial products are characterized by isotactic polypropylene. Propylene-based. Polypropylene has a melting temperature of about 170°C and a density of 0.90 g / cm 3 , is the lightest general-purpose plastic. It has high strength, high hardness, wear resistance, bending fatigue resistance, high heat resistance, good moisture resistance...

AI Technical Summary

Problems solved by technology

There are two main disadvantages of polypropylene: one is the large shrinkage rate, which leads to poor dimensional stability of the product and is prone to warping and deformation; the other is that it is easy to break at low temperature

By adding a compatibilizer, the functional groups can react, reduce the number of hydroxyl groups on the surface of the fiber, and increase the interfacial adhesion between the fiber and the resin, but the addition of the fiber will greatly reduce the impact strength of the composite material.

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