摘要
木材表面富含羟基,易吸水变形、腐烂以及机械强度下降。因此,采用湿化学法在水溶液体系中构建一种纳米气相二氧化硅和十六烷基三甲氧基硅烷的超疏水涂层。结果表明:该涂层能够在木材表面形成微纳米结构,有效减少水的渗透,提高木材的抗湿性能。与传统的有机溶剂相比,使用水作为溶剂,可以降低对环境的影响。通过对纳米气相二氧化硅和十六烷基三甲氧基硅烷的不同配比和改性量的研究,优化木材疏水改性方案。为了定量分析在水溶液体系时,制备的超疏水木材的环保性,采用生命周期评估的方法,通过收集制备流程中的能耗、物耗数据,与其他三种典型的超疏水木材制备方案进行对比分析,评估其环境友好性,并对各方案进行敏感度分析,得出影响其环境性能的主要因素。计算结果表明:含重金属元素的化学品和电力消耗是环境影响的主要因素。
The surface of wood is rich in hydroxyl groups,making it prone to water absorption,deformation,decay,and mechanical strength reduction.Therefore,a superhydrophobic coating composed of nano-fumed silica and hexadecyltrimethoxysilane is constructed in aqueous solution systems using a wet chemistry approach.The results showed that this coating forms micro/nanostructures on the wood surface,effectively reducing water penetration and enhancing the wood’s moisture resistance.Compared to traditional organic solvents,using water as a solvent can mitigate environmental impacts.By studying different ratios and modification levels of nano-fumed silica and hexadecyltrimethoxysilane,the wood hydrophobic modification scheme is optimized.To quantitatively analyze the environmental friendliness of preparing superhydrophobic wood in aqueous solution systems,a life cycle assessment method is employed.This involves collecting energy and material consumption data during the preparation process and conducting comparative analyses with three other typical superhydrophobic wood preparation schemes to evaluate their environmental friendliness.Sensitivity analyses are conducted on each scheme to identify the main factors affecting their environmental performance.The results showed that chemicals containing heavy metal elements and electricity consumption are the primary factors influencing environmental impact.
作者
胡森为
王鑫
刘婷婷
李煜东
杨海月
王成毓
Hu Senwei;Wang Xin;Liu Tingting;Li Yudong;Yang Haiyue;Wang Chengyu(Northeast Forestry University,Harbin 150040,P.R.China)
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2024年第9期123-131,共9页
Journal of Northeast Forestry University
基金
国家自然科学基金项目(32171693)
中央高校基本科研业务费专项资金项目(2572021CG02)
黑龙江省重点研发计划指导类项目(GZ20220045)。
关键词
超疏水
木材
水溶液
生命周期评估
敏感度分析
Superhydrophobic
Wood
Aqueous solution
Life cycle assessment
Sensitivity analysis
