亚磷酸根插层水铝钙石的制备及其热稳定性能  

Preparation and Thermal Stability of Phosphite Intercalated Hydrocalumite

作　　者：袁浩坤 罗德仪 蒋邵武 周喜 YUAN Hao-kun;LUO De-yi;JIANG Shao-wu;ZHOU Xi(Derpartment of Food and Chemical Engineering,Shaoyang University,Shaoyang 422000,China;Shaoyang Tiantang Addititves Chemical Co.Ltd.,Shaoyang 422002,China;Xiangzhong Normal College for Preschool Education,Shaoyang 422000,China)

机构地区：[1]邵阳学院食品与化学工程学院,湖南邵阳422000 [2]邵阳天堂助剂化工有限公司,湖南邵阳422002 [3]湘中幼儿师范高等专科学校,湖南邵阳422000

出　　处：《安徽化工》2022年第6期29-33,共5页Anhui Chemical Industry

基　　金：湖南省教育厅科学研究项目(19A444);邵阳市科技计划项目(2020RC55)。

摘　　要：以Ca(OH)_(2)、Al(OH)_(3)、CaCO_(3)和H_(3)PO_(3)为原料制备亚磷酸根插层水铝钙石,并将其应用于PVC热稳定剂中。通过转矩流变法和静态热烘箱老化法,考查了原料配比、改性剂的种类、改性剂的用量和晶化温度对亚磷酸根插层水铝钙石基PVC热稳定剂的性能影响。结果表明,以对甲苯磺酸为表面改性剂,在n(Ca(OH)_(2))∶n(Ca CO_(3))=3∶1,对甲苯磺酸用量7%和晶化温度100℃的条件下,制备的亚磷酸根插层水铝钙石具有良好的热稳定性,可使PVC的热动态热稳定时间长达1895 s,静态热稳定性时间长达110 min,优于传统的碳酸根硬脂酸酸改性水铝钙石。The hydrocalumite was prepared by using Ca(OH)_(2),Al(OH)_(3),CaCO_(3)and H_(3)PO_(3)as raw materials,and apply it to PVC heat stabilizer.The effect of the ratio of raw materials,the type of modifier,the amount of modifier and the crystallization temperature on the performance of the hydrocalumite-based PVC heat stabilizer for phosphite intercalation was investigated.As shown by the results,under the conditions of n(Ca(OH)_(2))∶n(Ca CO_(3))=3∶1,the amount of p-toluenesulfonic acid 7%and the crystallization temperature of 100℃,the phosphite intercalated hydrocalumite has good thermal stability.In addition,the hydrotalcite can make the thermal dynamic thermal stability time of PVC up to 1895 s and the static thermal stability time up to 110 min,which is better than the traditional carbonate stearic acid modified hydrocalumite.

关 键 词：水铝钙石 亚磷酸 对甲苯磺酸 热稳定剂 改性剂 

分 类 号：X703[环境科学与工程—环境工程] TQ424[化学工程]