新癸酸缩水甘油酯在粉末涂料用聚酯树脂中的应用  

Application of Glycidyl Neodecanoate in Polyester Resin for Powder Coatings

作　　者：许国徽 贾林 褚海涛 Xu Guohui;Jia Lin;Chu Haitao(Zhejiang Guanghua Technology Co.,Ltd.,Haining,Zhejiang 314400,China)

机构地区：[1]浙江光华科技股份有限公司,浙江海宁314400

出　　处：《涂料工业》2021年第8期17-24,共8页Paint & Coatings Industry

摘　　要：采用对苯二甲酸、间苯二甲酸和新戊二醇为主体,控制新癸酸缩水甘油酯(GN)的添加量和加料工艺,合成了一系列具有不同结构的聚酯树脂;此外,分别将2-丁基-2-乙基-1,3-丙二醇(BEPD)、2,2,4-三甲基-1,3-戊二醇(TMPD)等量替代GN合成树脂,并将它们都制备成白色和灰色粉末涂料。采用差示扫描量热仪(DSC)、凝胶色谱仪(GPC)、傅立叶变换红外光谱(FT-IR)和人工加速老化试验等对聚酯树脂物理性能及粉末涂料性能进行研究,最后比较了GN、BEPD和TMPD三者的优缺点。结果表明:GN能提高树脂的多分散性、反应活性、润湿性以及降低树脂的黏度;当其质量分数为树脂的10%时,聚酯树脂玻璃化转变温度(Tg)仍有60℃,耐水煮性较好,粉末涂层具有较好的耐候性。In this paper,A series of polyester resins with different molecular structures were synthesized by using terephthalic acid,isophthalic acid and neopentyl glycol as the main monomers,and controlling the usage and feeding process of GN(glycidyl neodecanoate). In addition,the resins were synthesized by replacing GN with 2-butyl-2-ethyl-1,3-propanediol(BEPD)and 2,2,4-trimethyl-1,3-pentanediol(TMPD)respectively in equal amount,three of which were formulated into white and gray powder coatings. The physical properties and powder coatings properties of polyester resin were studied by differential scanning calorimetry(DSC),gel chromatograph(GPC),Fourier transform infrared spectroscopy(FT-IR) and artificial accelerated weathering test. Finally,the advantages and disadvantages of GN,BEPD and TMPD were compared. The results showed that GN could improve the polydispersity,reactivity of the resin,wettability and reduce the viscosity of the resin;when the mass fraction of GN was 10 wt% of the resin the glass transition temperature(Tg)of polyester resin was still60 ℃,and the boiling water resistance was the best,and the powder coating with it provided good weather resistance.

关 键 词：新癸酸缩水甘油酯 聚酯树脂 粉末涂料 

分 类 号：TQ637.82[化学工程—精细化工]