纳米二氧化钛改性杨木的力学性能研究
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摘要
采用水热-溶剂法合成纳米二氧化钛(TiO_2),并对速生杨木浸渍处理以改善其力学性能。通过改变纳米二氧化钛制备中溶液酸碱度与反应温度,对比不同工艺条件下改性材的力学性能,结果发现:溶液为中性(pH=7)时改性材抗弯强度与(MOR)弹性模量(MOE)最佳,溶液为碱性(pH=10)时改性材硬度值最大。在同一碱性溶液下,反应温度为80℃时改性材抗弯强度与弹性模量最佳,反应温度为90℃时改性材硬度值最大。
The mechanical properties of modified poplar wood were improved, nano-titanium dioxide(TiO_2) was synthesized by water-solvent hot method. The PH and reaction temperature of mixed solution were taken as variables,the results showed that the modulus of rupture(MOR) and modulus of elasticity(MOE) of modified poplar were the best when the mixed solution was neutral(pH=7). When the mixed solution was alkaline(pH=10),the hardness of the modified poplar wood is the largest. Compared the modified poplar wood with different reaction temperature and the same alkaline solution,the MOR and MOE of the modified wood were the best when the reaction temperature was80℃,and the hardness of the modified wood was the largest when the reaction temperature was 90℃.
The mechanical properties of modified poplar wood were improved, nano-titanium dioxide(TiO_2) was synthesized by water-solvent hot method. The PH and reaction temperature of mixed solution were taken as variables,the results showed that the modulus of rupture(MOR) and modulus of elasticity(MOE) of modified poplar were the best when the mixed solution was neutral(pH=7). When the mixed solution was alkaline(pH=10),the hardness of the modified poplar wood is the largest. Compared the modified poplar wood with different reaction temperature and the same alkaline solution,the MOR and MOE of the modified wood were the best when the reaction temperature was80℃,and the hardness of the modified wood was the largest when the reaction temperature was 90℃.
引文
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[12]于成宁,吴燕,闫小星.纳米SiO2改性对UV固化水性木器涂料性能的影响[J].林产工业,2015,42(3):29-31.
[13]惠小雨,王晓棠,于成宁.纳米二氧化钛对木器硝基涂料性能的影响研究[J].家具,2016,37(3):44-47+64.
[14]于成宁,王晓棠,惠小雨.纳米二氧化钛改性水性UV复合涂膜[J].木材加工机械,2015,26(4):35-37+29.
[2]H.Miyafuji,S.Saka.Fire-resisting properties in several Ti02wood-inorganic composites and their topochemistry[J].Wood Sci Technol.1997,31(6):449-455.
[3]S.Saka,T.Ueno.Several SiCh wood-inorganic composites and their fire-resisting properties[J].Wood Sci Technol.,1997,31(6):457-466.
[4]邱玉玲,董岩.稀土改性杨木材质初探[J].东北林业大学学报,1993,21(1):67-69.
[5]刘磊.以硅酸钠为改性主剂的杨木无机复合材制备工艺的研究[D].西北林学院,1998.
[6]薛紫荞,王雪花,周亚琴.负压轻炭化木材物理力学性能[J].浙江农林大学学报,2019,36(1):177-182.
[7]吴智慧,汤敏.家具与木制品用桧木的物理力学性能研究[J].家具,2017,38(5):6-11+16.
[8]于书贤,吴智慧,王雪花.实木家具常用硬阔叶材中高温热处理物理性能研究[J].家具,2018,39(2):28-30+35.
[9]王晓棠,于书贤,吴智慧.中高温炭化后楸木的力学性能研究[J].家具,2017,38(5):26-29+91.
[10]史蔷,李如华.人工林杨木热处理材力学强度变化研究[J].木材加工机械,2014,25(2):10-14.
[11]曹坤丽,吴燕,曹福才.纳米TiO2/硬脂酸超疏水材料的制备与表征[J].林业工程学报,2017,2(5):31-35.
[12]于成宁,吴燕,闫小星.纳米SiO2改性对UV固化水性木器涂料性能的影响[J].林产工业,2015,42(3):29-31.
[13]惠小雨,王晓棠,于成宁.纳米二氧化钛对木器硝基涂料性能的影响研究[J].家具,2016,37(3):44-47+64.
[14]于成宁,王晓棠,惠小雨.纳米二氧化钛改性水性UV复合涂膜[J].木材加工机械,2015,26(4):35-37+29.