环保无溶剂型双组分聚氨酯结构胶的研制  

Study on preparing environment-friendly and two-components PU structure adhesive without solvent

作　　者：徐骏 姚其胜 

机构地区：[1]上海康达化工新材料股份有限公司,上海201201 [2]上海胶粘剂工程技术研究中心,上海201201

出　　处：《中国胶粘剂》2013年第7期29-33,共5页China Adhesives

基　　金：上海市科学技术委员会资助课题(11DZ2283500)

摘　　要：在传统PU(聚氨酯)胶粘剂组成体系中,以蓖麻油作为PAPI(多亚甲基多苯基异氰酸酯)固化剂的改性剂,并引入芳烃基聚酯多元醇和催化剂等,制备出一种适合工业化生产的环保无溶剂型双组分PU结构胶。研究了固化剂的改性、芳烃基聚酯多元醇类型及含量、无机填料和催化剂含量等对PU结构胶黏度和粘接性能的影响。结果表明:固化剂的适当改性有助于提高PU结构胶的粘接强度;当w[芳烃基聚酯多元醇(样8#)]=18%(相对于B组分质量而言)时,PU结构胶的综合性能相对最好,其剪切强度为10.9 MPa、90°剥离强度为50.2 N/cm;无机物填料的引入虽能降低PU结构胶的生产成本,但也会降低其粘接强度;催化剂的引入能有效提高PU结构胶的固化速率,其含量可根据不同地区、不同季节和不同用途进行调节。Based on traditional PU（polyurethane） adhesive composition system,with castor oil as modifier of PAPI （polymethylene polyphenyl isocyanate） curing agent, and introducing polyester polyol based on aromatic hydrocarbon and catalyst into system,an environment-friendly and two-components PU structure adhesive without solvent ,which adhesive was suitable for industrialized production, was prepared. The influences of some factors（such as modification of curing agent,types and contents of polyester polyol based on aromatic hydrocarbon,inorganic filler and catalyst contents） on viscosities and bonding properties of PU structure adhesives were investigated. The results showed that the curing agent,which was properly modified,help to improve the bonding strength of PU structure adhesive. The PU structure adhesive had the relatively best combination property because its shear strength was 10.9 MPa,and 90~ peeling strength was 50.2 N/cm when mass fraction of polyester polyol based on aromatic hydrocarbon（sample 8#） was 18% in B-component. Although the adding inorganic filler could reduce production cost of PU structure adhesive, but could also reduce its bonding strength. The adding catalyst could effectively improve curing speed of PU structure adhesive, and its contents could be regulated according to different areas, different seasons and different purposes.

关 键 词：聚氨酯 双组分 无溶剂 结构胶 芳烃基聚酯多元醇 蓖麻油 

分 类 号：TQ436.2[化学工程] TQ433.432