苯甲酸-蓖麻油酸钙/锌液体热稳定剂的制备与表征  

Preparation and Characterization of Calcium/Zinc Benzoate-Castor Oleate Liquid Thermal Stabilizer

作　　者：于静[1,2] 李敏贤 郭强强[1,2] 陈伟 贾献峰[1,2] 张宁 YU Jing;LI Minxian;GUO Qiangqiang;CHEN Wei;JIA Xianfeng;ZHANG Ning(Department of Chemistry, Tangshan Teacher College, Tangshan 063000, China;Tangshan Key Laboratory of Green Specialty Chemicals, Tangshan 063000, China)

机构地区：[1]唐山师范学院化学系,河北唐山063000 [2]唐山市绿色专用化学品重点实验室,河北唐山063000

出　　处：《中国塑料》2019年第10期78-83,共6页China Plastics

基　　金：河北省科技厅重点研发计划项目（17211411）;唐山市科技计划项目（18130224a）;唐山市科技计划项目（17110214a）

摘　　要：以苯甲酸、蓖麻油酸、氧化锌和氢氧化钙为主要原料,辅以β二酮、亚磷酸三苯酯、季戊四醇等辅助热稳定剂,制备了苯甲酸蓖麻油酸钙/锌液体热稳定剂。考察了钙锌比、辅助热稳定剂用量等因素对产品性能的影响。通过刚果红试纸法对其静态热稳定性进行测试,转矩流变仪法以及双辊开炼法对其动态热稳定性进行测试。利用热重分析仪对添加热稳定剂的聚氯乙烯(PVC)样品进行测试。结果表明,当钙锌比为3∶1,β二酮用量为0.75g,亚磷酸三苯酯用量为10g,季戊四醇用量为1g时,产品对PVC的热稳定性最好,动态热稳定性可达1180s,平衡扭矩为21N·m。A calcium/zinc benzoate-castor oleate liquid thermal stabilizer was synthesized by using benzoic acid, castor oleic acid, zinc oxide and calcium hydroxide as raw materials and then combined with some auxiliary thermal stabilizers such as beta-dione, triphenyl phosphite and pentaerythritol. The effects of Ca/Zn ratio and the amount of auxiliary thermal stabilizers on the properties of the stabilized products were investigated. The static thermal stability was measured by a Congo red test, and the dynamic thermal stability was characterized by a torque rheometer and a twin-roll mill. The PVC samples stabilized with thermal stabilizers were also analyzed by a thermogravimetric analyzer. The results indicated that the stabilized PVC samples exhibited an optimal thermal stability at a Ca/Zn mass ratio of 3/1, a beta-dione dosage of 0.75 g, a triphenyl phosphite dosage of 10 g and a pentaerythritol dosage of 1 g. Meanwhile, their dynamic thermal and the equilibrium torque stability reached 1 180 s and 21 N·m, respectively.

关 键 词：聚氯乙烯 苯甲酸 蓖麻油酸 钙/锌热稳定剂 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]