PVC用二丁基锡二马来酸镧的制备及性能研究
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摘要
以二丁基氧化锡、马来酸、硝酸镧为主要原料合成了二丁基锡二马来酸镧,并用傅里叶红外光谱仪和元素分析进行表征。通过热老化烘箱法、刚果红法、转矩流变仪和紫外光谱仪等测定二丁基锡二马来酸镧对PVC的热稳定性能,分别探讨了与季戊四醇、硬脂酸钙/硬脂酸锌的协同效果。结果表明,二丁基锡二马来酸镧单独添加到PVC中,具有良好的热稳定性能,可较显著地抑制PVC长链多烯结构的快速生成,减缓试样的热降解;与季戊四醇复配使用可延长PVC静态热稳定时间,改善前期着色;与硬脂酸钙、硬脂酸锌复配使用可降低加工能耗,增强材料的拉伸和冲击性能。
Lanthanum diitaconate dibutyltin was synthesized with dibutyltin oxide, maleic acid and lanthanum nitrate as raw material, and its structure was characterized by Fourier-transform infrared spectroscopy and elemental analysis. The thermal stability of lanthanum diitaconate dibutyltin used for PVC was studied by means of thermal aging oven method, Congo red testing method, torque rheometer and ultraviolet spectrometer. The synergistic effects of lanthanum diitaconate dibutyltin with pentaerythritol and calcium/zinc stearate were discussed respectively. The results indicated that lanthanum diitaconate dibutyltin had a good thermal stability when added into PVC alone, which could significantly depress the rapid generation of long chain polyene structure in PVC and retarded the thermal degradation of PVC. The combination of lanthanum diitaconate dibutyltin and pentaerythritol could increase the static thermal stability time of PVC and delay the change in initial color. The combination of lanthanum diitaconate dibutyltin and calcium/zinc stearate could reduce processing energy consumption and enhance the stretching and impact properties of PVC.
Lanthanum diitaconate dibutyltin was synthesized with dibutyltin oxide, maleic acid and lanthanum nitrate as raw material, and its structure was characterized by Fourier-transform infrared spectroscopy and elemental analysis. The thermal stability of lanthanum diitaconate dibutyltin used for PVC was studied by means of thermal aging oven method, Congo red testing method, torque rheometer and ultraviolet spectrometer. The synergistic effects of lanthanum diitaconate dibutyltin with pentaerythritol and calcium/zinc stearate were discussed respectively. The results indicated that lanthanum diitaconate dibutyltin had a good thermal stability when added into PVC alone, which could significantly depress the rapid generation of long chain polyene structure in PVC and retarded the thermal degradation of PVC. The combination of lanthanum diitaconate dibutyltin and pentaerythritol could increase the static thermal stability time of PVC and delay the change in initial color. The combination of lanthanum diitaconate dibutyltin and calcium/zinc stearate could reduce processing energy consumption and enhance the stretching and impact properties of PVC.
引文
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[10] 肖箫. 基于酰亚胺酸的有机锡(Ⅳ)羧酸酯的合成、表征、晶体结构及其性质研究[D]. 东北师范大学, 2014.
[11] BRAUN D, SONDERHOF D. Assignment of UV-Absorption Maxima of Degraded PVC[J]. Polymer Bulletin, 1985, 14(1):39-43.
[2] 易强顺, 赵保良, 李祥彦, 等. 一种高沸点硫醇甲基锡的合成[J]. 塑料助剂, 2015, 114 ( 6):30-32. YI Q S, ZHAO B L, LI X Y, et al. Synthesis of a High Boiling Point Methyltin Mercaptide[J]. Plastics Additives, 2015, 114( 6):30-32.
[3] 粟颖, 吴茂英. 羧酸有机锡对PVC的热稳定作用-性能递变规律与机理[J].中国塑料, 2015, 29 (1):100-103. LI Y, WU M Y. Heat Stabilization of Organotin Carboxylates on PVC: Progressive Change Law of Performance and Mechanism[J]. China Plastics, 2015, 29 (1):100-103.
[4] 徐孺牛.甲基硫醇锡热稳定剂在PVC塑料中的应用[J]. 中国塑料, 2000, 14 (7):76-78. XU R N. Application of Heat Stabilizer Methyl Stannum Mercaptide in Poly (vinyl chloride)[J]. China Plastics, 2000, 14(7):76-78.
[5] 林莅蒙, 吴茂英, 王锋. 氰基胍作为 PVC 热稳定剂的应用[J]. 塑料, 2012, 41 ( 2):70-74. LI L M, WU M Y,WANG F. Cyanoguanidine as a Heat Stabilizer for PVC[J]. Plastics, 2012, 41 ( 2):70-74.
[6] 张红梅,曹柳男,杨云翠. 几种环保型热稳定剂在聚氯乙烯中的性能研究[J]. 橡塑技术与装备, 2018, 44 (14):22-25. ZHANG H M, CAO L N, YANG Y C. Study on the Performance of Several Environment-friendly Heat Stabilizers in PVC[J]. China Rubber/Plastics Technology and Equipment, 2018, 44 (14):22-25.
[7] 胡中文, 王建军, 张露露. 有机锡热稳定剂及其发展现状和趋势[J]. 塑料科技, 2004, 44 (2):1-3. HU Z W, WANG J J, ZHANG L L. Organotin Heat Stabilizers and Its Present State and Perspect[J]. Plastics Science and Technology,2004, 44 (2):1-3.
[8] 张宁, 李德玲, 杨静. 肉豆蔻酸稀土复合热稳定剂对PVC性能的影响[J]. 中国塑料, 2013, 27 (7):81-85. ZHANG N, LI D L, YANG J. Effects of Rare Earth Myristate Compound Stabilizer on the Thermal Stability of PVC[J]. China Plastics, 2013, 27 (7):81-85.
[9] MOHAMMED F S, CONLEY M, RUMPLE A C, et al. Enhanced Thermal Stabilization and Reduced Color Formation of Plasticized Poly(vinyl chloride) Using Zinc and Calcium Salts of 11-Maleimideoundecanoic Acid[J].Polymer Degradation and Stability, 2015, 111:64-70.
[10] 肖箫. 基于酰亚胺酸的有机锡(Ⅳ)羧酸酯的合成、表征、晶体结构及其性质研究[D]. 东北师范大学, 2014.
[11] BRAUN D, SONDERHOF D. Assignment of UV-Absorption Maxima of Degraded PVC[J]. Polymer Bulletin, 1985, 14(1):39-43.