作　　者： ; ; ;

机构地区： 中国林业科学研究院林产化学工业研究所国家林业局林产化学工程重点开放性实验室

出　　处： 《林产化学与工业》 2008年第1期44-48,共5页

摘　　要： 以无色松香季戊四醇酯的热稳定性、耐候性和储存稳定性为考察指标,对抗氧剂和光稳定剂的稳定化作用进行了研究。结果表明,将0.3%的抗氧剂K-B与0.4%的光稳定剂与紫外线吸收剂LD+UV-20添加于无色松香季戊四醇酯中,其热稳定性、耐候性和储存稳定性得到明显改善:在180℃下加热8h,产品颜色小于加纳色号1;距离400W紫外灯40cm下照射15h,产品的增重率为0.213%、颜色为3～4(加纳色号);在40℃下储存30天,其颜色及其中的氢过氧化物浓度基本不变。采用氧化诱导期(OIT)法对试样的抗氧化能力进行了评价,所得结果与上述结论一致。 For many applications, the stability of rosin ester is an important property which determines its commercial viability. The kind and amount of antioxidants and light stabilizers which affected the stability of colorless rosin pentaerythritol ester were studied. The results showed that the stability was improved markedly when antioxidant K-B 0.3 % and light stabilizer LD ＋ UV-20 0.4 % were added into colorless pentaerythritol ester. The product had many merits as follows： better thermal stability, color was less than 1 （Gardner） when it was heated at 180 ℃for 8 h; better antiaging stability. The rate of weight-gain was 0.213 % and color was 3-4 （Gardner） when it was irradiated with a 400 W mercury lamp at a distance of 40 cm for 15 h; better storage stability, its color and concentration of hydroperoxidation product were kept constant nearly at 40 ℃ for 30 d. Oxidation resistance was also evaluated by oxidation induction time （ OIT）, which was consistant with the above conclusions.

关 键 词： 无色松香季戊四醇酯 抗氧剂 光稳定剂 稳定化

领　　域： [化学工程]