Formula for enhancing mold corrosion resistance of wheat straw/PP (polypropylene) wood-plastic composite material by using antimicrobial agent

Abstract

The invention relates to a formula for enhancing mold corrosion resistance of a wheat straw / PP (polypropylene) wood-plastic composite material by using antimicrobial agents. A filling material wheat straw modified by a coupling agent KH550 and a matrix PP are subjected to compounding and hot pressing to prepare the wheat straw / PP wood-plastic composite material with or without three antimicrobial agents (zinc borate, chlorothalonil and SD-36M); and five mold corrosion experiments are performed on the wheat straw / PP wood-plastic composite material with or without the antimicrobial agents to analyze the improvement action of the antimicrobial agents on the corrosion resistance of the wheat straw / PP composite material and obtain the optimal addition amounts of the antimicrobial agents. The result indicates that the zinc borate and chlorothalonil have favorable improvement action on the corrosion resistance of the wheat straw / PP composite material, and the improvement action of the SD-36M is small; the optimal addition amounts of the zinc borate and chlorothalonil are respectively 1% and 1.25%; and the wheat straw / PP composite material has favorable comprehensive properties after mold corrosion.

Description

technical field [0001] The invention relates to an antibacterial agent-enhanced formula for mold corrosion resistance of wheat straw / PP wood-plastic composite material, which belongs to the technical field of wood-plastic material preparation. Background technique [0002] Wood-plastic composite material is a new type of environmentally friendly material widely used in recent years. It has the advantages of both wood and polymer materials. Polymer materials have strong antibacterial properties. Therefore, wood-plastic composite materials are more corrosion-resistant than wood. Manufacturers also use this as one of their selling points. one. However, in practical applications, it is found that under a certain temperature and humidity environment, wood-plastic composite materials will still be corroded by mold. After corrosion, plaque will form on the surface or the mechanical properties of the material will decrease, which greatly shortens the service life of wood-plastic com...

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Problems solved by technology

[0003] The purpose of this invention is to carry out research on the improvement of the corrosion resistance of wheat straw / PP composite materials by different antibacterial agents by testing the mechanical properties, water absorption performance, color change and surface structure of wood-plastic materials after the mold corrosion experiment, and to explore the effect of different antibacterial agents on the corrosion resistance of wheat straw / PP composite materials. The optimal dosage in wood-plastic composite materials can solve the problem of plaque formation on the surface of wood-plastic composite materials and the decline in material mechanical properties after being corroded by mold, and prolong the service life of wood-plastic composite materials. It has certain reference significance for actual wood-plastic composite materials.

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