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林业科学 ›› 2013, Vol. 49 ›› Issue (12): 114-120.doi: 10.11707/j.1001-7488.20131217

• 论文与研究报告 • 上一篇    下一篇

热环境对偶联剂处理聚乙烯木塑复合材表面性质的影响

王辉, 邸明伟, 王清文   

  1. 东北林业大学生物质材料科学与技术教育部重点实验室 哈尔滨 150040
  • 收稿日期:2012-10-12 修回日期:2012-12-12 出版日期:2013-12-25 发布日期:2014-01-01
  • 通讯作者: 邸明伟
  • 基金资助:

    林业公益性行业科研专项(201204802);黑龙江省哈尔滨市科技创新人才研究专项资金项目(2011RFXXG016)。

Effect of Heat on the Surface Properties for Wood/Polyethylene Composites Treated by Silicane Coupling Agent

Wang Hui, Di Mingwei, Wang Qingwen   

  1. Key Laboratory of Bio-Based Material Science & Technology of Ministry of Education Northeast Forestry University Harbin 150040
  • Received:2012-10-12 Revised:2012-12-12 Online:2013-12-25 Published:2014-01-01

摘要:

采用硅烷偶联剂处理木粉/聚乙烯复合材料表面以改善其胶接性能。为探究胶接接头在热环境下的耐久性,利用胶接强度测试、接触角测试、扫描电镜、FTIR和XPS分析手段,研究热环境对偶联剂处理的木塑复合材料表面性质的影响。结果表明:涂覆处理后硅烷偶联剂能够与聚乙烯木塑复合材料形成化学连接,从而改善胶接强度,但在长时间的受热环境下,偶联剂处理木塑复合材料的表面性质会发生变化,表现为表面粗糙度以及表面各种化学基团的含量发生改变。涂覆处理后木塑复合材料表面性质的变化将直接影响胶接接头的耐久性,而表面性质的变化更主要源于木塑复合材料中的木质成分。

关键词: 木粉/聚乙烯复合材料, 表面处理, 硅烷偶联剂, 表面性质, 耐热性

Abstract:

The surface of wood/polyethylene (PE) composites was treated by silicane coupling agent to improve its adhesion properties. To explore the durability in the condition of heat for the bonding joint, bonding strength test, the contact angle test, SEM, FTIR and XPS were employed in the heating experiment to investigate the effect of heat on the surface properties of wood/PE composites treated by silicane coupling agent. The results indicated that there was a chemical combination between silicane coupling agent and the surface of the composite after the surface treatment of coating, which would be of great benefit to the adhesion for the composite. And the surface properties of wood /PE composite treated by silicane coupling agent would have a change under long time heating, which embodied in the change of the roughness and the contents of chemical groups for the surface of the composites. The changes for the surface properties of the coating treated wood/PE composites would have a considerable effect on the durability of the bonding joint and the wood fiber within the composite could result in further changes of surface properties under long time heating.

Key words: wood/polyethylene composites, surface treatment, silicane coupling agent, surface property, heat-resistance

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