Biodegradable polylactic acid-PBS-wood fiber compound foam material and preparation method thereof

Abstract

The invention discloses a biodegradable polylactic acid-PBS-wood fiber compound foam material and a preparation technology thereof. The preparation technology is characterized by taking polylactic acid, PBS, poplar wood powder, sodium bicarbonate, dicumyl peroxide, nanometer calcium carbonate, KH550, ammonium polyphosphate, melamine, expansible graphite, coating red phosphorus and a crylic acid solution as raw materials. The crylic acid solution and KH550 / ethanol solution are used for soaking the poplar wood powder, so that the modified wood fiber has excellent dispersibility in matrix and is high in compatibility and the binding property with the interface of the matrix is improved; the tensile strength, bending strength and impact toughness of the composite material are promoted; the mechanical properties and heat resistance of the composite material are promoted; after ammonium polyphosphate is activated and modified with melamine, the ammonium polyphosphate is mixed and milled with the expansible graphite and coating red phosphorus; the components have a synergistic effect; and the acquired composite flame retardant is used for promoting the flame retardant property of the composite material.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a biodegradable polylactic acid-PBS-wood fiber composite foam material and a preparation process thereof. Background technique [0002] Wood-plastic composite materials use agricultural waste as the main raw material, which reduces the environmental pollution caused by plant straw and waste plastic incineration, has the advantages of environmental friendliness and sustainability, and is widely used in building materials, furniture, packaging and transportation, etc. industry. The research and application of wood-plastic composite materials are of great significance to the search for wood substitute materials. [0003] In his master's thesis "Preparation and Performance Research of Carbon Fiber Reinforced Wood Fiber / Polyethylene Composite Materials", Du Feng used chopped carbon fiber and continuous long carbon fiber to replace part of the wood fiber in the wood-plastic composit...

AI Technical Summary

Problems solved by technology

However, there are insufficient mechanical properties, impact properties, and flame retardant properties.