影响改性脲醛树脂性能的因素分析

The factors affecting performances of modified UF resin

应用主因子分析法探讨了氧化淀粉改性脲醛树脂的合成工艺中,游离甲醛含量、固含量、贮存稳定性、剪切强度等主要技术指标的影响因素。结果表明:脲醛比、淀粉种类和氧化程度是影响游离甲醛含量和固含量的主要因素;淀粉氧化程度和加入量是影响剪切强度的主要因素;脲醛比、淀粉与水之比及氧化程度是影响稳定性的主要因素。

Primary factor analysis was used in this paper to analyze the factors which affect the main index such as free CH2O content, shear strength, solids content and stability. Those factors occurred in the synthetical technics of modified urea-formaldehyde resin with starchy oxide. The results showed that urea/formaldehyde ratio, species of starch and oxidation degree of starch are the main factors affecting the content of free formaldehyde and solid; and the quantity and oxidation degree of starch are main factors affecting shear strength; the ratio of urea and formaldehude, ratio of starch and water and the oxidation degree are main factors affecting the stability.