摘要
用2,6-萘二甲酸(HNDA)部分替代对苯二甲酸(PTA)合成了聚酯树脂,并以其制备了粉末涂料。通过差示扫描量热仪、热失重仪和人工加速老化实验对聚酯树脂及粉末涂料的性能进行了研究,对比了PTA/HNDA配比对聚酯酯化时间、聚酯树脂玻璃化转变温度(Tg)、聚酯树脂的热稳定性及粉末涂层光泽、耐热性能及耐老化性能的影响,发现以HNDA替换PTA有利于提高聚酯树脂的Tg、热稳定性,粉末涂层的光泽、耐热性及耐水煮性能,但降低了聚酯树脂的酯化效率和涂层的耐老化性能。
The polyester resins were synthesized with 2, 6-naphthalenedicarboxylic acid （HNDA） partially replacing terephthalic acid （PTA） at different ratio, which were further used to prepare powder coatings. The properties of the polyester resin and the film thereof were characterized by DSC, TGA and the artificial accelerated aging test. The influence of the PTA/HNDA ratio on esterification time, Tg and thermal stability of polyester resin, and gloss, thermal stability and weatherability of the film was investigated. It was found that the replace- ment of PTA by HNDA could increase the Tg of polyester resin, improve the thermal stability of polyester resin, moreover, enable the film to show the improved gloss, heat and boiling re- sistance, whereas, the esterification efficiency of the polyester resin was decreased and the weatherability of the film was affected negatively.
出处
《涂料工业》
CAS
CSCD
北大核心
2015年第5期39-42,共4页
Paint & Coatings Industry
基金
广州市花都区科技计划项目(HD14ZD006)
关键词
粉末涂料
聚酯树脂
2
6-萘二甲酸
powder coatings
polyester resin
2, 6-naphthalenedicarboxylic acid
