模板合成AC-Zn_(2)SnO_(4)对PVC热降解性能影响  

Effect of AC-Zn_(2)SnO_(4) Synthesized by Template on Thermal Degradation of PVC

作　　者：陈灵智[1,2,3] 杨佳辉 吴瑞红 焦运红[3] 徐建中[3] Chen Lingzhi;Yang Jiahui;Wu Ruihong;Jiao Yunhong;Xu Jianzhong(Department of Applied Chemistry,Hengshui University,Hengshui,Hebei,053000;Sino Rubber Technology Co.,Ltd.,Hengshui,Hebei,053000;College of Chemistry and Environmental Science,Hebei University,Baoding,Hebei,071002)

机构地区：[1]衡水学院应用化学系,河北衡水053000 [2]衡橡科技股份有限公司,河北衡水053000 [3]河北大学化学与环境科学学院,河北保定071002

出　　处：《现代塑料加工应用》2021年第1期14-18,共5页Modern Plastics Processing and Applications

基　　金：衡水学院高层次人才启动基金(2018GC07)。

摘　　要：通过活性炭模板法制备锡酸锌阻燃剂(AC-Zn_(2)SnO_(4)),并用X射线衍射仪(XRD)对其表征。将其应用于聚氯乙烯(PVC),采用极限氧指数(LOI)、烟密度研究了阻燃剂对PVC阻燃性能和力学性能的影响;通过热重-红外-质谱分析(TG-MS-IR)和扫描电子显微镜(SEM)研究了阻燃前后PVC热降解性和炭层形貌,探究其阻燃机理。结果表明:当AC-Zn_(2)SnO_(4)添加量在10质量份时,PVC的LOI为37.0%,烟密度等级为79.7%,断裂伸长率明显增加。在降解过程中释放最大强度的HCl,CO_(2)和-CH_(3)碎片所对应的时间提前,苯的释放量减少,残炭外表面形貌结构更为密实。Zinc stannate flame retardant(AC-Zn_(2)SnO_(4)) was prepared by activated carbon template method and characterized by X-ray diffraction(XRD).It was applied into polyvinyl chloride(PVC).The flame retardant properties and mechanical properties of PVC were studied by means of limit oxygen index(LOI) and smoke density. The thermal degradation and carbon morphology of PVC before and after flame retardant were studied by TG-MS-IR and SEM, and the flame retardant mechanism was explored. The results show that when the addition of AC-Zn_(2)SnO_(4) is 10 phr, LOI of PVC samples is 37.0%,the smoke density grade is 79.7%, and the elongation at break of PVC samples significantly increases. During the degradation process, the time corresponding of maximum evolution of HCl, CO_(2), -CH_(3) fragment from PVC/AC-Zn_(2)SnO_(4) is advanced, And the release amount of benzene is reduced, and the outer surface of the carbon residue is denser.

关 键 词：锡酸锌 聚氯乙烯 阻燃 消烟 热降解 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]