林产化学与工业2017，Vol.37Issue(5)：39-44,6.DOI:10.3969/j.issn.0253-2417.2017.05.005
聚硅氧烷改性水性环氧树脂/聚氨酯复合聚合物的制备及性能研究
Preparation and Properties of Waterborne EP/PU Composites Modified with Polysiloxane
摘要
Abstract
Waterborne epoxy resin ( EP )/polyurethane ( PU ) composite polymers were prepared from anionic polysiloxane modifying terpene-base epoxy resin based polyol dispersions ( ASTP) and hydrophilically modifying hexamethylene diisocyanate (D80).The silicon concentration on the uppermost surfaces of the composite polymers was higher than that at the polymer -substrate interfaces.This result implied that the hydroxypropyl terminated polydimethy-siloxane(HTPDMS) segments enriched at the polymer-air interface and formed the hydrophobic film surface .When the amount of the HTPDMS reached 10% by weight based on the weight of ASTP , siloxane content on the uppermost surfaces was saturated and the contact angle increased to about 95°.Due to the good thermal stability of siloxane segment , the introdution of HTPDMS to the polyurethane improved the thermal stability of composite .However , due to the low glass transition temperature of siloxane segment , the attachment of HTPDMS to the polyurethane decreased the glass transition temperature of the composite , and the formation of microphase separation between HTPDMS segment and the resin matrix also led to a decrease of glass transition temperatures of the composite polymers .关键词
萜烯基环氧树脂/聚硅氧烷/双组分水性聚氨酯/疏水改性Key words
terpene-based epoxy resin/polysiloxane/two-component waterborne polyurethane/hydrophobic modification分类
化学化工引用本文复制引用
刘迪,吴国民,刘贵锋,陈健,孔振武..聚硅氧烷改性水性环氧树脂/聚氨酯复合聚合物的制备及性能研究[J].林产化学与工业,2017,37(5):39-44,6.基金项目
国家林业局948技术引进项目(2015-4-43) （2015-4-43）
江苏省生物质能源与材料重点实验室基金(JSBEM-S-201505) （JSBEM-S-201505）
