水性丙烯酸树脂交联硅酸钠浸渍改性杉木工艺与性能研究  

Process and Properties of Water-based Acrylic Resin Crosslinked Sodium Silicate Impregnation Modified Chinese Fir

作　　者：李萍[1] 刘思羽 张源 周亚 韩建超 左迎峰[2] LI Ping;LIU Siyu;ZHANG Yuan;ZHOU Ya;HAN Jianchao;ZUO Yingfeng(College of Furniture and Art Design,Central South University of Forestry and Technology,Changsha 410004,China;College of Materials Science and Engineering,Central South University of Forestry and Technology,Changsha 410004,China;Jiangsu Fuqing Wood Industry Co.,Ltd.,Jiangsu Suqian 223600,China)

机构地区：[1]中南林业科技大学家居与艺术设计学院,长沙410004 [2]中南林业科技大学材料科学与工程学院,长沙410004 [3]江苏福庆木业有限公司,江苏宿迁223600

出　　处：《包装工程》2024年第23期10-18,共9页Packaging Engineering

基　　金：国家自然科学基金青年项目(32201485);湖南省重点研发计划(2023NK2038);湖南省教育厅科学研究项目(21B0238,22A0177);湖湘青年英才科技创新类项目(2023RC3159)。

摘　　要：目的提高速生杉木木材的物理力学性能、尺寸稳定性、药剂抗流失性、热稳定性等性能,满足速生杉木在家居装饰、建筑工程、包装工程等领域的应用。方法以硅酸钠和水性丙烯酸树脂为改性剂,利用真空加法浸渍法,制得硅酸钠/丙烯酸树脂复合改性杉木。通过对其力学性能、吸水率、流失率进行测试,并借用傅里叶变换红外光谱(FT-IR)、X射线光电子能谱(XPS)、X射线衍射(XRD)和热重分析(TGA)对改性杉木进行表征,探究硅酸钠/丙烯酸树脂复合改性对杉木性能的影响规律。结果当硅酸钠质量分数和水性丙烯酸树脂质量分数均为15%时,硅酸钠/丙烯酸复合改性杉木的力学性能、耐水性能和药剂抗流失效果最佳。相比于未改性杉木、硅酸钠改性杉木和丙烯酸树脂改性杉木,硅酸钠/丙烯酸复合改性杉木的力学性能、尺寸稳定性、药剂抗流失性、热稳定性都得到了提升。结论硅酸钠/丙烯酸树脂浸渍改性,既能实现硅酸钠对杉木内部孔隙的物理填充,又能实现丙烯酸树脂对硅酸钠的化学交联,从而达到显著提高杉木各项性能的效果。The work aims to improve the physical and mechanical properties,dimensional stability,resistance to loss and thermal stability of fast-growing Chinese fir wood,so that the fir wood can be applied in home decoration,building engineering,packaging engineering and other fields.Sodium silicate and water-based acrylic resin were used as modifiers to produce sodium silicate/acrylic resin compound modified wood by vacuum-pressure impregnation.By testing mechanical properties,water absorption and leaching rates,and using Fourier transform infrared spectroscopy(FT-IR),X-ray photoelectron spectroscopy(XPS),X-ray diffraction(XRD)and Thermal Weight Analysis(TGA)to characterize modified wood,the effect of compound modification of sodium silicate/acrylic resin on wood performance was investigated.When the sodium silicate concentration and water-based acrylic resin concentration were 15%,sodium silicate/acrylic compound modified wood had the best mechanical properties,water resistance and loss resistance.Compared to unmodified wood,sodium silicate modified wood and acrylic resin modified wood,the mechanical properties,dimensional stability,loss resistance and thermal stability of sodium silicate/acrylic compound modified wood were all improved.Sodium silicate/acrylic resin impregnation modification can fill sodium silicate into the internal porosity of Chinese fir wood and realize the chemical crosslinking of acrylic resin and sodium silicate,so as to significantly improve the performance of Chinese fir wood.

关 键 词：杉木 硅酸钠 水性丙烯酸树脂 浸渍改性 交联固着 

分 类 号：S781.7[农业科学—木材科学与技术]