两种偶联剂对磷石膏的球磨改性工艺  

Modification of Phosphogysum Using Two Kinds of Coupling Agent

作　　者：秦军[1,2] 金翠霞[3] 谢占金[3] 于杰 

机构地区：[1]贵州大学喀斯特环境与地质灾害防治教育部重点实验室,贵州贵阳550003 [2]国家复合材改性聚合物材料工程技术研究中心,贵州贵阳550014 [3]贵州大学化学工程学院,贵州贵阳550003

出　　处：《塑料》2010年第5期18-20,共3页Plastics

基　　金：国家科技支撑计划课题(2007BAB08B05);喀斯特环境与地质灾害防治教育部重点实验室开放基金课题(2008K-04)

摘　　要：采用硅烷偶联剂和钛酸酯偶联剂对磷石膏进行球磨改性研究,得出硅烷偶联剂改性磷石膏的最佳工艺条件为:偶联剂用量为3%,球磨转速为300 r/min,改性时间为2 h,改性后的磷石膏吸油值为23.75 gDOP/100 g磷石膏;钛酸酯改性磷石膏的最佳工艺条件为:偶联剂用量为3%,球磨转速为300 r/min,改性时间为3 h,改性后的磷石膏的吸油值为21.65 g DOP/100 g磷石膏,对改性前后的磷石膏进行了抽提实验和红外光谱分析,得出:磷石膏与偶联剂之间发生了化学键和作用。初步工业实验表明:改性磷石膏与聚合物的相容性较好。The surface of the phosphogypsum was modified with silane coupling agent and titanate coupling agent by ball milling. The optimum conditions for silane-modification include coupling agent dosage of 3 % , rotation speed of 300 r/rain, modification time of 2 h,the oil absorption value of the modified phosphogysum reached 23.75 g DOP/100 g phosphogysum. The optimum conditions for titanate-modification include coupling agent dosage of 3 % , rotation speed of 300 r/min, modification time of 3 h,the oil absorption value of the modified phosphogysum reached 21.65 g DOP/100g phosphogysum. And the modified phosphogypsum was tested with the experiment of extraction and infrared absorption spectrum （IR）. The test result showed that the chemical bond was formed between phosphogypsum and coupling agent. The initial industry experiment resuhs show that the compatibility of the modifieated phosphogypsum with PP were better.

关 键 词：磷石膏 硅烷偶联剂 钛酸酯偶联剂 球磨 改性 

分 类 号：TQ330.387[化学工程—橡胶工业]