摘要
随着游离甲醛含量的降低,水溶性聚乙烯醇建筑胶粘剂长期储存时发霉变质问题越来越引发人们的关注。本研究从生产工艺路线出发研究了胶粘剂发霉变质的原因,采用长期模拟验证实验和微生物侵染实验,研究了CuSO4、NaNO2、A26、CP19和CN46五种防腐剂对胶粘剂的防腐效果。结果表明,不同品种的防腐剂对胶粘剂的防腐性效果不同,CuSO4、NaNO2防腐性能较弱,并会出现离子络合沉淀;含有异噻唑啉酮衍生物类杀菌剂A26、CP19与CN46防腐剂杀菌抑菌效果明显,随着有效物质含量的增加,其抑菌效果越好。研究发现,CN46用量为0.25%时具有最优的长期防腐效果。
With people’s strengthened environmental awareness and the decrease of free formaldehyde content in water soluble polyvinyl alcohol (PVA) building adhesive, the problems about mildewing and change of quality in PVA adhesive are getting people's attention. The reasons for the adhesive mildewing were studied on the aspect of PVA adhesive production process. The different dosage of preservatives, such as CuSO4, NaNO2, A26, CP19 and CN46 which affect on antiseptic properties of adhesive were studied by long-term simulation veriifed experiment and microorganism infection experiment. The results showed that the antiseptic properties of PVA adhesives were affected by different species and dosage of preservatives. The isothiazolone derivatives such as A26, CP19 and CN46 had better antiseptic properties and compatibility than CuSO4 and NaNO2. Research shows that CN46 has optimal and long-term antiseptic effect when its amount was 0.25%.
出处
《现代盐化工》
2016年第2期20-22,共3页
Modern Salt and Chemical Industry
基金
江苏省自然科学基金项目资助
项目编号:BK2012142
