热熔压敏胶在不同高分子基材上热老化过程的流变行为研究  

Study on Rheological Behavior of Thermal Aging Process of Hot-melt Pressure Sensitive Adhesive on Different Polymer Sheets

作　　者：陈楠 刘志维[1] 吴泽 武凯迪 徐大洲 谭宁[1] 梁卫业 Chen Nan;Liu Zhiwei;Wu Ze;Wu Kaidi;Xu Dazhou;Tan Ning;Liang Weiye(Beijing Oriental Yuhong Waterproof Technology Co.,Ltd.,State Key Laboratory of Special Functional Waterproof Materials,Beijing 101309,China)

机构地区：[1]北京东方雨虹防水技术股份有限公司,特种功能防水材料国家重点实验室,北京101309

出　　处：《中国建筑防水》2020年第9期8-10,14,共4页China Building Waterproofing

摘　　要：流变试验可作为考察热熔压敏胶在高分子防水卷材上热老化行为的有效手段。在PET、PE、EPDM 3种不同基材上涂布了同一种热熔压敏胶,利用流变仪考察了其在不同基材上的热老化行为,包括玻璃化转变温度Tg、储能模量G'和损耗因子tanδ等流变学参数。研究发现,热老化过程中热熔压敏胶本身并未发生明显的氧化或降解,而是发生了矿物油组分向基材的迁移,迁移程度与基材的相容性及结晶度相关,在PET基材上几乎不发生迁移,在EPDM橡胶类基材上的迁移最为显著。Rheological test can serve as an effective means to test the thermal aging behavior of hot-melt pressure sensitive adhesive on polymer waterproofing membrane.Same kind of hot-melt pressure sensitive adhesive is coated on PET,PE,and EPDM substrates respectively,and rheometer is used to inspect its thermal aging behaviors on different substrates,like glass transition temperature Tg,storage modulus G',loss factor tanδ,and other rheological parameters.Research findings show:no obvious oxidation or degradation happens to hot-melt pressure sensitive adhesive itself in the thermal aging process;but there are mineral oil components migrated to the substrates,and the migration speed is related to the compatibility and crystallinity of the substrates;the migration rarely happens on PET substrate,and it is most obvious on EPDM rubber substrate.

关 键 词：高分子自粘胶膜防水卷材 热熔压敏胶 热老化 流变 玻璃化转变温度 迁移效应 

分 类 号：TU502[建筑科学—建筑技术科学] TU573