°</sup>C 、熱處理時(shí)間 2.5h 、載銀量 1.5% 、改性劑質(zhì)量濃度 1.5mg/mL ，真空浸漬時(shí)間 60min ，此時(shí)改性材對(duì)黑曲霉和桔青霉的防治效力最大，均為 100% ，改性材在白腐菌和褐腐菌影響下的質(zhì)量損失率最小，分別為 2.36% ！ 1.90% 。與對(duì)照材、熱處理材、載銀納米二氧化鈦浸漬材對(duì)比，載銀納米二氧化鈦浸漬熱處理材的濕脹率和干縮率均為最低，徑向、弦向和體積吸水濕脹率較對(duì)照材降低 31.34%～36.36% ，徑向、弦向和體積吸濕濕脹率較對(duì)照材降低 41.06%～61.7% ，徑向、弦向和體積氣干干縮率較對(duì)照材降幅可達(dá) 23.28%～32.24% 載銀納米二氧化鈦浸漬熱處理方式可實(shí)現(xiàn)載銀納米二氧化鈦顆粒在木材內(nèi)的均勻負(fù)載，綜合提升木材的防霉防腐和尺寸穩(wěn)定性，實(shí)現(xiàn)了優(yōu)異的木材改性效果。-龍?jiān)雌诳W(wǎng)" />

特黄三级爱爱视频|国产1区2区强奸|舌L子伦熟妇aV|日韩美腿激情一区|6月丁香综合久久|一级毛片免费试看|在线黄色电影免费|国产主播自拍一区|99精品热爱视频|亚洲黄色先锋一区

不同改性處理對(duì)橡膠木抗菌性能影響研究

  • 打印
  • 收藏
收藏成功


打開文本圖片集

中圖分類號(hào)：S794.1 文獻(xiàn)標(biāo)識(shí)碼：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

橡膠木（Heveabrasiliensis）作為一種重要的熱帶木材，因其生長迅速、紋理美觀和易于加工等特性而被廣泛應(yīng)用于家具、建筑和裝飾等領(lǐng)域1。（剩余14232字）

monitor