PAP-ZnCl_(2)浸渍增强木材的耐紫外及力学性能  

PAP-ZnCl 2 Impregnation Enhances the UV Resistance and Mechanical Properties of Wood

作　　者：王燃 吴章康[1] Wang Ran;Wu Zhangkang(College of Materials and Chemical Engineering,Southwest Forestry University,Kunming 650224,China)

机构地区：[1]西南林业大学材料与化学工程学院,云南昆明650224

出　　处：《云南化工》2024年第12期41-46,共6页Yunnan Chemical Technology

基　　金：国家自然科学基金面上项目(31870551)资助;西南林业大学预研基金项目(01108/18210132)。

摘　　要：为提高木材的耐紫外线和力学性能,采用聚氨基聚醚亚磷酸酯(PAP)和氯化锌(ZnCl_(2))复合浸渍剂对木材进行改性处理。通过浸渍处理,评估了浸渍条件下,PAP-ZnCl_(2)对木材性能的影响。结果表明,PAP-ZnCl_(2)浸渍处理显著改善了木材的紫外线耐受性和力学性能。具体而言,处理后的木材表现出优异的紫外线阻隔效果和较高的拉伸性能及弯曲性能,优于未处理的对照样本。改性后的木材拉伸性能由20.5 MPa提高至41.3 MPa,弯曲性能由80.3提高至94.25 MPa,并且改性后的木材在波长为200~600 nm处的紫外屏蔽效果显著。红外光谱(FTIR)、扫描电子显微镜(SEM)和力学性能测试表明,PAP和ZnCl_(2)的共同作用有效增强了木材的表面结构稳定性,减少了因紫外线照射引起的材料降解。研究结果为木材在户外环境中的耐久性提升及相关领域的实际应用具有参考价值。To enhance the UV resistance and mechanical properties of wood,the wood was modified with a composite impregnating agent of polyaminopolyether phosphite(PAP)and zinc chloride(ZnCl_(2)).The impacts of PAP-ZnCl_(2)on wood properties were assessed through impregnation.The findings indicated that the impregnation treatment with PAP-ZnCl_(2)significantly enhanced the UV resistance and mechanical properties of wood.Particularly,the treated wood exhibited outstanding UV blocking effects and higher tensile and bending properties compared to the untreated control samples.The tensile property of the modified wood increased from 20.5MPa to 41.3MPa,and the bending property rose from 80.3 to 94.25MPa.Moreover,the UV shielding effect of the modified wood was remarkable within the wavelength range of 200 to 600nm.Infrared spectroscopy(FTIR),scanning electron microscopy(SEM),and mechanical properties tests demonstrated that the combined action of PAP and ZnCl_(2)effectively strengthened the surface structural stability of wood and mitigated the material degradation caused by ultraviolet irradiation.The research outcomes have reference value for enhancing the durability of wood in outdoor environments and practical applications in related fields.

关 键 词：PAP 氯化锌 木材改性 力学性能 耐紫外线 色差 

分 类 号：S781[农业科学—木材科学与技术] TS652[农业科学—林学]