丙烯酸树脂合成中链接转移剂的应用

Application of link transfer agents in the synthesis of acrylic resins

研究了链接转移剂(十二烷基硫醇)与引发剂(过氧化苯甲酰)的浓度对单体聚合转化率及粘度的影响,找出了两者之间的内在联系,链转移剂与引发剂的用量在合适的条件下,才能获得比较满意的效果。随着链接转移剂用量变化时,树脂的粘度产生不同程度的影响,而转化率的高低更依赖于十二烷基硫醇与过氧化苯甲酰的用量比。讨论了链接转移反应机理,为合成低粘度丙烯酸树脂提供了依据。

The effects of the concentration of link transfer agent(dodecyl mercaptan)and initiator(benzoyl peroxide)on monomer polymerization conversion rate and viscosity were studied,and the internal connection between them was found out.The dosage of link transfer agent and initiator under suitable conditions to obtain a more satisfactory effect.As the amount of the link transfer agent changes,the viscosity of the resin has different degrees of influence,and the conversion rate is more dependent on the dosage ratio of dodecyl mercaptan to benzoyl peroxide.The mechanism of link transfer reaction was discussed,which provides a basis for the synthesis of low-viscosity acrylic resin.