不同改性处理对橡胶木抗菌性能影响研究

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中图分类号：S794.1 文献标识码：A DOI： 10.7525/j.issn.1006-8023.2025.04.014

Abstract：Usingrubberwoodasrawmaterial，orthogonal experimentaldesign wasused to exploretheinfluenceof silverloaded nano itanium dioxide impregnated heat treatmentonthe mold and corrosionresistance of rubberwood，and compared themold and corrosion resistance，dryshrinkage and wet swelling properties ofthe control timber，heat-treated timber，silver-loadednano titanium dioxide impregnatedtimberandsilver-loaded nano titaniumdioxideimpregnated heat-treated timber，andtheinfluence mechanismof diferent modification treatments onthe physicochemical properties of the timber wasrevealedthrough the means of electron microscopy，XRD（X-ray difraction）.Theresults showed that the optimal process of silver-loaded nano titanium dioxide impregnated heat treatment was 16O C，2.5 h，1. 5% silver loading，1.5mg/mL modifierconcentration，6O min vacuum impregnation time，atthis time，the modified timber had thegreatest efficacy inthe preventionofAspergillusnigerandPenicilliumcitrinum，both of them were 100% ，and the modified timberhadthe smallestrateofqualitylossunderthe influenceof white-rotfungus and brown-rotfungus，which were 2.36% and1.9 % ，respectively. Compared with the control timber，heat-treated timber and silver-loaded nano titaniumdioxide impregnated timber，silver-loaded nano titanium dioxide impregnated heat-treated timber hadthelowest wetswellng anddryshrinkage，theradial，tangentialand volumetric water-absorbing wetswellingrate was reduced by 31. 34% -36. 36% compared with that of the control timber，the radial，tangential and volumetric moisture-absorbing wet swelling rate was reduced by 41. 06% -61. 7% compared with that of the control timber，the radial， tangential and volumetric air-drying dry shrinkage rate was reduced by up to 23.28%-32. 24% compared with that of the control timber.

Thesilver-loadednanotitaniumdioxideimpregnatedheat treatmentcanrealizetheuniformloadingofsilver-loaded nano titanium dioxideparticles in wood，which cancomprehensively improvethe moldand corrosionresistance and dimensional stability of wood，and realize the excellent wood modification effect.

Keywords：Silver-loaded nano titanium dioxide；heat treatment；mold and corrosion resistance；wet swelling proper ties；wood modification

0 引言

橡胶木（Heveabrasiliensis）作为一种重要的热带木材，因其生长迅速、纹理美观和易于加工等特性而被广泛应用于家具、建筑和装饰等领域1。（剩余14232字）