文献类型：期刊文献

中文题名：HDPE胶合板与脲醛树脂胶合板的性能对比

英文题名：Performance comparison of HDPE plywood with UF resin plywood

作者：方露[1] 常亮[1] 郭文静[1] 任一萍[1] 王正[1]

第一作者：方露

机构：[1]中国林业科学研究院木材工业研究所,国家林业局木材科学与技术重点实验室

年份：2014

卷号：36

期号：2

起止页码：125-128

中文期刊名：北京林业大学学报

外文期刊名：Journal of Beijing Forestry University

收录：CSTPCD;;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金：林业公益性行业科研专项重大项目(201004004)

语种：中文

中文关键词：高密度聚乙烯薄膜;脲醛树脂;物理力学性能;热稳定性;胶合界面

外文关键词：HDPE film; UF resins; physical-mechanical properties; thermal properties; bonding interface

分类号：TS653.3

摘要：为了探讨高密度聚乙烯(HDPE)薄膜替代脲醛(UF)树脂作为胶黏剂的可行性,采用力学试验机、DMA、TG、SEM等方法分别对HDPE胶合板与UF树脂胶合板的物理力学性能、热稳定性、胶合界面进行综合评价。结果表明:HDPE薄膜作为胶黏剂使用时具有与UF树脂相同的黏结能力,且HDPE薄膜具有更加优异的耐水性能。浸泡7 d后,UF树脂胶合板的吸水率、吸水厚度膨胀率比HDPE胶合板分别高出23.5%和5.1%。HDPE胶合板的储能模量在130℃附近降低到极小值,而UF树脂胶合板则一直保持缓慢降低的趋势;但当温度低于60℃时,HDPE胶合板的储能模量高于UF树脂胶合板。HDPE胶合板与UF树脂胶合板具有相似的热解规律,但HDPE胶合板在420℃处有1个较弱的热解峰。HDPE薄膜、UF树脂均可以与杨木单板形成机械啮合结构。
In order to evaluate the feasibility of using HDPE film as wood adhesives, physical-mechanical properties, thermal properties and interface morphology of two kinds of poplar plywood, made with HDPE film and UF resins as adhesives respectively, were investigated by mechanical testing machine, dynamic mechaniqal analysis （DMA） , thermal gravimetric analysis （TG） , and scanning electronic microscope （SEM）. Results showed that HDPE film had comparable bonding ability to UF resins and possesed better water-resistance than UF resins. Seven days water absorption and thickness swelling values of the plywood bonded with UF resins were 23.5% and 5.1% higher than those with HDPE film respectively. Storage modulus of HDPE bonded plywood reached a minimum value near 130 ℃ while plywood bonded with UF resins remained a slow reduction of modulus in the whole period. However, it presented almost the same dynamic mechanical properties as UF composites when temperature was lower than 60 ~C. Similar pyrolysis characteristics were found in HDPE plywood and UF plywood except an additional weak peak at 420℃ for HDPE plywood. Both HDPE film and UF resins can form mechanical interlock structures with poplar veneers.