Abstract:
The production technology of a super-new polyurethane curing agent has been developed，in which the colour isl owe rthan No.1Fe/Co colourimenter，the masfraction of freeTDI is smaler than 0.5%，and the storage stability can last for more than two years.It was found that the masratio of OH-ter-minated acrylic resin and super-new polyurethane croslinker is 10∶4~6.Alkali material was found the main reason causing geling.New countermeasures were proposed to keep low color value，low free TDI and high storage stability.
Key words:
New polyurethane croslinker,
colour value,
mass fraction of free TDI,
storage stability
摘要： 阐述了颜色低于铁钴比色计 1号，游离 TDI含量小于 0.5%，贮存稳定性达 2年以上的新型聚氨酯固化剂 的生产工艺;确定了含羟基丙烯酸树脂与该固化剂的质量比为:m(含羟基丙烯酸树脂)∶m(新型聚氨酯固化剂)=10∶4 ~6;分析了碱性物质是导致聚氨酯固化剂成胶的原因;提出了保证聚氨酯固化剂低色值、低游离 TDI含量和高贮存稳 定性的方法。
关键词:
新型聚氨酯固比剂 ,
色值 ,
游离TDI含量 ,
稳定性
Zhang Xiujing. Study of A New Polyurethane Curing Agent[J]. Paint & Coatings Industry, 2008, 38(10): 42-44.
张修景. 新型聚氨酯固化剂的研究[J]. 涂料工业, 2008, 38(10): 42-44.