Antibacterial agent and wood-plastic composite material

Abstract

The invention discloses an antibacterial agent and a wood-plastic composite material, wherein the antibacterial agent adopts a three-layer structure, and the particle diameter D50 of the antibacterialagent is less than 5 [mu]m, and the particle diameter D90 of the antibacterial agent is less than 12 [mu]m. The particle size of the antibacterial agent is controlled, the specific surface area of the antibacterial agent is increased, and the antibacterial effect is improved. The organosilicon quaternary ammonium salt on the outermost layer is adsorbed on the surfaces of bacteria to change the permeability of cell walls of the bacteria, so that microorganisms stop breathing and are killed, and the effects of sterilization and bacteriostasis are achieved, namely, contact death; if contact sterilization does not work, polyhexamethylene guanidine hydrochloride is adopted to enter cell membranes to inhibit synthesis of liposomes in the membranes to cause thallus apoptosis, so that an optimalsterilization effect is achieved; furthermore, the DNA molecules in bacterial cells are destroyed by using thiazolinone bactericides to inactivate bacteria. Through contact sterilization, entering a cell membrane to realize sterilization and deeper damage of DNA molecules in bacterial cells in sequence, the triple continuous cooperation has a better antibacterial effect.

Description

technical field [0001] The invention relates to the technical field of wood-plastic composite materials, in particular to an antibacterial agent and wood-plastic composite materials. Background technique [0002] Wood-plastic composite material is a new type of composite material that has been booming at home and abroad in recent years. It refers to the use of polyethylene, polypropylene, polyvinyl chloride, etc., instead of the usual resin adhesive, and mixed with waste plant fibers such as wood powder, rice husk, and straw. New wooden materials, and then plastic processing techniques such as extrusion, molding, injection molding, etc., to produce panels or profiles. Mainly used in building materials, furniture, logistics packaging and other industries. The board formed by hot extrusion after mixing plastic and wood powder in a certain proportion is called extruded wood-plastic composite board. PVC wood-plastic composite material is the main type of wood-plastic composite...

AI Technical Summary

Problems solved by technology

However, with the application and development of wood-plastic composite materials, it has been found through research that the anti-corrosion and antibacterial durability of wood-plastic composite materials is not as good as expected. Closed, many mildew and decay fungi will harm, infect or even degrade wood-plastic composite materials, affecting their performance and life

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