偶联剂改性氧化铈提高硅凝胶的耐热氧性能

doi:10.16085/j.issn.1000-6613.2021-0502

化工进展 ›› 2022, Vol. 41 ›› Issue (2): 874-880.DOI: 10.16085/j.issn.1000-6613.2021-0502

偶联剂改性氧化铈提高硅凝胶的耐热氧性能

马星星¹(), 冯亚凯¹^,²()

^1.天津大学化工学院，天津 300350
^2.天津大学化工协同创新中心，天津 300350

收稿日期:2021-03-12 修回日期:2021-05-06 出版日期:2022-02-05 发布日期:2022-02-23
通讯作者: 冯亚凯
作者简介:马星星（1995—），女，硕士研究生，研究方向为有机硅材料。E-mail：2308060726@qq.com。
基金资助:
天津市科技计划(16ZXCLGX00010)

Improvement of thermal oxygen aging resistance of silicon gel by adding modified cerium oxide with coupling agent

MA Xingxing¹(), FENG Yakai¹^,²()

^1.School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
^2.Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300350, China

Received:2021-03-12 Revised:2021-05-06 Online:2022-02-05 Published:2022-02-23
Contact: FENG Yakai

摘要/Abstract

摘要：

针对硅凝胶在使用过程中发生的变硬变脆等老化问题，本文以乙烯基硅油为基胶，含氢硅油为交联剂，氧化铝为填料制备了相应的硅凝胶弹性体。通过热重分析和马弗炉等温失重确定了硅凝胶基胶的热氧老化方式和氧化铈的抗热氧老化性能，并用三种不同类型的偶联剂对氧化铈进行了表面改性，探究了偶联剂改性氧化铈对硅凝胶耐热氧老化性能的影响。结果表明，添加偶联剂改性氧化铈可以明显提高硅凝胶的耐热性能，250℃老化8天，添加1%（质量分数）纳米氧化铈硅凝胶的拉伸强度与老化前相比增加了7.8倍，与此同时，添加1%（质量分数）KH560、6121和7707型偶联剂改性氧化铈的硅凝胶拉伸强度分别增加了2.5倍、4倍和4.7倍。综上，在老化前期，添加KH560偶联剂改性氧化铈的硅凝胶力学性能变化最小，抗热氧老化性能最佳。

关键词: 硅凝胶, 老化, 氧化铈, 偶联剂, 力学性能

Abstract:

For the aging problem of silicon gel hardening and brittleness in the process used, the silicon gel elastomer was prepared by using vinyl silicone oil as the base adhesive, hydrogen silicone oil as the crosslinking agent and alumina as the filler. By thermo-gravimetric analysis and isothermal weight loss in muffle furnace, the thermal oxygen aging mode of silicon gel and the antithermal oxygen aging property of cerium oxide were determined. The surface modification of cerium oxide with three different types of coupling agents was carried out, and the influence of coupling agent modified cerium oxide on the thermal oxygen aging property of silicon gel was investigated. The results showed that adding cerium oxide modified coupling agent can significantly improve the heat performance of silica gel. After aging at 250℃ for 8 days, the tensile strength of silicon gel with 1%(mass fraction) nano cerium oxide increased by 7.8 times compared with that before aging. Meanwhile, the tensile strength of silicon gel adding 1%(mass fraction) of cerium oxide modified with KH560, 6121 and 7707 of coupling agent enhanced by 2.5 times, 4 times and 4.7 times, respectively. In the early aging stage, the mechanical properties of silicon gel adding cerium oxide modified with KH560 coupling agent had the least change with the best thermal oxygen aging resistance.

Key words: silica gel, aging, cerium oxide, coupling agent, mechanical property

中图分类号:

TQ334.9

马星星, 冯亚凯. 偶联剂改性氧化铈提高硅凝胶的耐热氧性能[J]. 化工进展, 2022, 41(2): 874-880.

MA Xingxing, FENG Yakai. Improvement of thermal oxygen aging resistance of silicon gel by adding modified cerium oxide with coupling agent[J]. Chemical Industry and Engineering Progress, 2022, 41(2): 874-880.

图/表 4

参考文献 17

1	刘金龙. LED封装用硅胶材料的制备及性能研究[D]. 广州: 华南理工大学, 2014.
	LIU Jinlong. Study on preparation and properties of silicon rubber for light emitting diode encapsulation[D]. Guangzhou: South China University of Technology, 2014.
2	ZHENG X Y, QIN Y, MENG X B, et al. Synthesis of polyethylene glycol functional bonded silica gel for selective recognition and separation of α-cyclodextrin[J]. Journal of Chromatography A, 2021, 1639: 461917-461925.
3	陈诗佳, 周凯, 李泽瑞, 等. 硅凝胶改善XLPE/SIR界面绝缘特性的研究[J]. 绝缘材料, 2020, 53(5): 76-82.
	CHEN Shijia, ZHOU Kai, LI Zerui, et al. Study on insulating properties of XLPE/SIR interface improved by silicone gel[J]. Insulating Materials, 2020, 53(5): 76-82.
4	夏洋洋. 耐压密封凝胶的制备与应用[D]. 合肥: 合肥工业大学, 2018.
	XIA Yangyang. Preparation and application of pressure-resistance sealing gel[D]. Hefei: Hefei University of Technology, 2018.
5	LYU Z, ZHENG Y, ZHANG Z J, et al. Synthesis, thermal, and dynamic mechanical properties of 1,3-bis(diphenylsilyl)-2,2,4,4-tetraphenylcyclodisilazane-containing polydimethylsiloxanes[J]. Journal of Applied Polymer Science, 2013, 128(6): 4231-4236.
6	DIBA M, WANG H N, KODGER T E, et al. Highly elastic and self-healing composite colloidal gels[J]. Advanced Materials, 2017, 29(11): 1604672-1604279.
7	DERIABIN K, IGNATOVA N, KIRICHENKO S O, et al. Nickel(Ⅱ)-pyridinedicarboxamide-co-polydimethylsiloxane complexes as elastic self-healing silicone materials with reversible coordination[J]. Polymer, 2021, 212: 123119-123127.
8	付善菊, 韩哲文, 吴平平. 聚硅氧烷热稳定性研究进展[J]. 高分子通报, 2001(1): 40-47.
	FU Shanju, HAN Zhewen, WU Pingping. Progress in the research of the thermal stability of polysiloxanes[J]. Polymer Bulletin, 2001(1): 40-47.
9	WU J, DONG J Y, WANG Y S, et al. Thermal oxidation ageing effects on silicone rubber sealing performance[J]. Polymer Degradation and Stability, 2017, 135: 43-53.
10	CHANG T Y, ZHANG X S, CUI H L. Evolution of terahertz dielectric permittivity of rubber during thermo-oxidative aging[J]. Microwave and Optical Technology Letters, 2018, 60(1): 127-134.
11	BAI L, ZHENG J P. Synergistic effect of iron oxide modified carbon nanotubes on the thermal stability of silicone rubber under different atmospheres[J]. Journal of Thermal Analysis and Calorimetry, 2016, 123(2): 1281-1291.
12	HE Q, WANG G F, ZHANG Y, et al. Thermo-oxidative ageing behavior of cerium oxide/silicone rubber[J]. Journal of Rare Earths, 2020, 38(4): 436-444.
13	ZHAO B, WANG Q L, JIN L. Heat-resistant antiflaming and friction mechanisms in nano-Fe₂O₃-reinforced silicon rubber[J]. Science and Engineering of Composite Materials, 2013, 20(4): 331-335.
14	苏清福, 杨宇, 李刚, 等. 交联密度法研究硅烷偶联剂对室温硫化硅橡胶性能的影响[J]. 北京化工大学学报(自然科学版), 2013, 40(2): 37-43.
	SU Qingfu, YANG Yu, LI Gang, et al. A cross-linking density method study of the effect of a silane coupling agent on the performance of room temperature vulcanized (RTV) silicone rubber[J]. Journal of Beijing University of Chemical Technology(Natural Science Edition), 2013, 40(2): 37-43.
15	XU X, LIU J J, CHEN P, et al. The effect of ceria nanoparticles on improving heat resistant properties of fluorosilicone rubber[J]. Journal of Applied Polymer Science, 2016, 133(42): 44117-44125.
16	钟发春, 傅依备, 赵小东, 等. 交联聚硅氧烷的热降解行为[J]. 宇航材料工艺, 2003, 33(1): 29-32.
	ZHONG Fachun, FU Yibei, ZHAO Xiaodong, et al. The pyrolysis behavior of cross-linked polysiloxanes[J]. Aerospace Materials & Technology, 2003, 33(1): 29-32.
17	刘卫东. 耐热性硅橡胶的研究与应用进展[J]. 辽宁化工, 2018, 47(7): 677-680.
	LIU Weidong. Research progress of heat-resistant silicone rubber[J]. Liaoning Chemical Industry, 2018, 47(7): 677-680.

[1]	王家庆, 宋广伟, 李强, 郭帅成, DAI Qingli. 橡胶混凝土界面改性方法及性能提升路径[J]. 化工进展, 2023, 42(S1): 328-343.
[2]	欧阳素芳, 周道伟, 黄伟, 贾凤. 新型耐迁移橡胶防老剂的研究进展[J]. 化工进展, 2023, 42(7): 3708-3719.
[3]	刘大晨, 杜明慧, 王衡. 交联型特辛基酚醛树脂酚羟基间位的溴化改性[J]. 化工进展, 2022, 41(S1): 382-388.
[4]	刘竞, 郑新国, 李铁军, 王财平, 赵彦旭, 李颖, 楼梁伟, 沈伟. 可再分散乳化沥青粉末改性水泥砂浆的力学性能和微观形貌[J]. 化工进展, 2022, 41(4): 2015-2021.
[5]	尹洪贺, 沈绍传, 齐亮, 姚克俭. 新型多降液管塔板的流体力学性能及其流场CFD模拟[J]. 化工进展, 2022, 41(2): 601-608.
[6]	陈国栋, 刘海成, 孟无霜, 尤雨, 张皓, 曹梦茹. 微塑料老化的人工干预及理化特性表征研究进展[J]. 化工进展, 2022, 41(12): 6443-6453.
[7]	杨立宁, 郑东昊, 王立新, 杨光. 基于蜻蜓翅脉结构的连续碳纤维增强树脂基复合材料仿生设计与增材制造[J]. 化工进展, 2022, 41(11): 5961-5967.
[8]	范开峰, 李思, 黄启玉, 万宇飞. 原油管道蜡沉积物径向性质研究进展[J]. 化工进展, 2021, 40(7): 3679-3692.
[9]	金浩, 刘杏, 林咏梅. 植酸改性的明胶复合膜制备及其结构与性能分析[J]. 化工进展, 2021, 40(7): 3847-3853.
[10]	张璐, 孙金鹏, 俞青源, 李如燕, 张云浩, 王文俊. 木粉疏水改性对HDPE基木塑复合材料性能的影响[J]. 化工进展, 2020, 39(9): 3487-3493.
[11]	王文玉, 董瑞宝, 李志波, 潘广勤. 液体低分子聚异戊二烯改性丁腈橡胶发泡材料[J]. 化工进展, 2020, 39(8): 3230-3235.
[12]	王艳, 李兆强, 张丞, 王雨, 樊蓉蓉, 丁智勇, 郭欣, 王荣. CeO₂含量对柴油机商用稀土SCR催化剂脱硝性能的影响[J]. 化工进展, 2020, 39(7): 2662-2669.
[13]	郑帼,苗同梦,吴波,周存. 高强高模维纶纤维的表面修饰及其在水泥中的分散性[J]. 化工进展, 2020, 39(1): 250-256.
[14]	张文博,汪怀远,王池嘉,陈茜茜,朱艳吉. 改性氧化铈/钨酸镍环氧防腐涂层的制备及性能[J]. 化工进展, 2019, 38(10): 4666-4673.
[15]	杨世诚, 孙琦, 谌伦建, 张玉龙, 薛晓晓, 仪桂云. 赤泥改性及其对丁苯橡胶复合材料微观结构和力学性能的影响[J]. 化工进展, 2019, 38(07): 3297-3303.

偶联剂改性氧化铈提高硅凝胶的耐热氧性能

Improvement of thermal oxygen aging resistance of silicon gel by adding modified cerium oxide with coupling agent

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

图/表 4

参考文献 17

相关文章 15

编辑推荐

Metrics

本文评价