Study on the Properties of Silica Sol/Polyethylene Glycol/Boron Salt/Acrylate Composite Agent Modified Wood
Dillenia sp.wood is prone to mildew and cracking.A polyethylene glycol(PEG)and boron salt composite treatment can improve dimensional stability and antibacterial properties of wood,but the agent was easily lost in water.In this study,Dillenia sp.wood was treated by PEG as a dimensional stabilizing agent,boron salt as an antibacterial agent,and silica sol,acrylate agent as supplements.The ratio of the modifier was studied by using the swelling rate and mass loss rate of the compound system as the index.The reaction products were characterized by infrared spectroscopy and scanning electron microscopy(SEM).The modifier was injected into the wood to react and solidify.The morphology,dimensional stability,and mildew resistance of the treated wood were analyzed.The results showed that when the mass percentage of silica sol,PEG,boron salt,and acrylate agent was 30%,20%,2%,and 8%,respectively,the swelling rate and mass loss rate of gel bubble water were the lowest.SEM images of dried pharmaceutical products showed that under the action of borate and acrylic ester,silica sol fixed polyethylene glycol within it.The anti-swelling rate of the modified Dillenia sp.wood was up to 46%in the moisture absorption-drying and water absorption-drying cycle tests.The loss rate of the modifier from the treated wood after soaking in water was about 42.5%lower than that of the polyethylene glycol treated wood.There was no mildew observed in the indoor comprehensive mildew test after one month.
国家科技期刊平台
NSTL
万方数据
维普
