«上一篇/Previous Article|本期目录/Table of Contents|下一篇/Next Article»

《合成橡胶工业》[ISSN:1000-1255/CN:62-1036/TQ]

期数:

2024年2期

页码:

147-152

栏目:

出版日期:

2024-03-15

文章信息/Info

Title:

Effect of inorganic oxides on heat resistance of fluorosilicone rubber

文章编号:

1000-1255（2024）02-0147-06

作者:

冯小亚; 魏凯杰; 胡彦杰?鄢

华东理工大学 材料科学与工程学院，上海 200237

Author(s):

FENG Xiao-ya;  WEI Kai-jie;  HU Yan-jie

School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China

关键词:

氟硅橡胶; 耐热剂; 无机氧化物; 硫化特性; 热稳定性; 拉伸性能

Keywords:

fluorosilicone rubber;  heat-resistant additive;  inorganic oxide;  curing characteristics;  thermal stability;  tensile property

分类号:

TQ 333.93

DOI:

DOI:10.19908/j.cnki.ISSN1000-1255.2024.02.0147

文献标识码:

B

摘要:

以自制纳米颗粒二氧化钛（TiO2）及铁掺杂二氧化钛（TiO2/Fe2O3）作为耐热剂，研究了其对氟硅橡胶热稳定性和耐热空气老化性能的影响规律，分析了氟硅橡胶在空气中热失重5%时的分解产物成分及氟硅橡胶在热老化前后特征基团含量的变化，并对比研究了商用耐热剂纳米氧化铈（CeO2）、三氧化二铁（Fe2O3）和三氧化二铝（Al2O3）对氟硅橡胶性能的影响。结果表明，当纳米耐热剂质量分数为2%时，氟硅橡胶在空气中的5%热失重温度从高到低依次为添加TiO2/Fe2O3、TiO2、Fe2O3、CeO2、Al2O3试样和空白样；添加了纳米TiO2/Fe2O3复合耐热剂的氟硅橡胶的5%热失重温度达到了453 ℃，比空白样提高了47 ℃。纳米TiO2/Fe2O3复合耐热剂能显著抑制氟硅橡胶含氟侧基的氧化，这是氟硅橡胶耐热性能提高的主要原因。

Abstract:

The effects of self-made nano particles titanium dioxide (TiO2) and iron-doped titanium dioxide (TiO2/Fe2O3) as heat-resistant additives on thermal stability and tensile properties of fluorosilicon rubber after hot air aging were studied. The decomposition products of fluorosilicon rubber at 5% weight loss in air and the content of characteristic groups of fluorosilicon rubber before and after thermal aging were analyzed. The effects of commercial heat-resistant additives, such as nano ceria (CeO2), ferric oxide (Fe2O3) and aluminum trioxide (Al2O3) on fluorosilicone rubber were compared. The results showed that when the mass fraction of nano heat- resistant additive was 2%, the 5% weight loss temperature of fluorosilicone rubber in air from high to low was TiO2/Fe2O3, TiO2, Fe2O3, CeO2, Al2O3 samples and blank sample. The 5% weight loss temperature of fluorosilicone rubber with nano-TiO2/Fe2O3 heat-resistant additive reached 453 ℃, which was 47 ℃ higher than that of blank sample. Nano-TiO2/Fe2O3 heat-resistant additive could significantly inhibit oxidation of fluorine-containing side groups of fluorosilicone rubber, which was the main reason for improvement of the heat resistance of fluorosilicone rubber.

参考文献/References

［1］ Xu Zehua， Zhang Yanbin， Zhou Jin， et al. Study on high-temperature composite properties of fluorosilicone rubber with nano-Sb2O3［J］. Journal of Applied Polymer Science， 2020， 137（42）： 49302.［2］ So Jaeii， Lee Chungsoo， Kim Byeongseok， et al. Improvement of heat resistance of fluorosilicone rubber employing vinyl-functionalized POSS as a chemical crosslinking agent［J］. Polymers， 2023， 15（5）： 1300.［3］ Han Ruijie， Li Yilong， Zhu Qingsong， et al. Research on the preparation and thermal stability of silicone rubber composites： A review［J］. Composites （Part C）： Open Access， 2022： 100249.［4］ Gan Tengfei， Shentu Baoqing， Weng Zhixue. Modification of CeO2 and its effect on the heat-resistance of silicone rubber［J］. Chinese Journal of Polymer Science， 2008， 26（4）： 489-494.［5］ Han Ruijie， Wang Zhilong， Zhang Yinghe. Thermal stability of CeO2/graphene/phenyl silicone rubber composite［J］. Polymer Testing. 2019， 75： 277-283.［6］ He Qiang， Wang Guangfei， Zhang Yong， et al. Thermo-oxidative ageing behavior of cerium oxide/silicone rubber［J］. Journal of Rare Earths， 2020， 38（4）： 436-444.［7］ Shentu Baoqing， Gan Tengfei， Weng Zhixue. Modification of Fe2O3 and its effect on the heat-resistance of silicone rubber［J］. Journal of Applied Polymer Science. 2010， 113（5）： 3202-3206.［8］ Li Hongyan， Tao Sen， Huang Yanhua， et al. The improved thermal oxidative stability of silicone rubber by using iron oxide and carbon nanotubes as thermal resistant additives［J］. Composites Science and Technology， 2013， 76： 52-60.［9］ Feng Qikun， Zhang Dongli， Zha Junwei， et al. Thermal， electrical， and mechanical properties of addition-type liquid silicone rubber co-filled with Al2O3 particles and BN sheets［J］. Journal of Applied Polymer Science. 2020， 137（45）： 49399.［10］ Yao Yiying， Lu Guoquan， Boroyevich D， et al. Effect of Al2O3 fibers on the high-temperature stability of silicone elastomer［J］. Polymer， 2014， 55（16）： 4232-4240.［11］ Zhou Wenying， Qi Shuhua， Tu Chunchao， et al. Effect of the particle size of Al2O3 on the properties of filled heat-conductive silicone rubber［J］. Journal of Applied Polymer Science， 2007， 104（2）： 1312-1318.［12］ Silva V P， Paschoalino M P， Goncalves M C， et al. Silicone rubbers filled with TiO2： Characterization and photocatalytic activity［J］. Materials Chemistry and Physics， 2009， 113（1）： 395-400.［13］ Englert M， Minister F， Moussaoui A， et al. Mechanical pro-perties of thermo-oxidative aged silicone rubber thermally stabilized by titanium oxide based fillers［J］. Polymer Testing， 2022， 115： 107726.［14］ Katz S， Lachman N， Hafif N， et al. Studying the physical and chemical properties of polydimethylsiloxane matrix reinforced by nanostructured TiO2 supported on mesoporous silica［J］. Polymers， 2023， 15（1）： 81.［15］ Choryath I， DeGroot Jr J V， Dipino M， et al. Fluorosilicone elastomers for high temperature performance： US， 2010166996A 1［P］. 2010-07-01.［16］ Xu Xiang， Liu Junjie， Chen Pei， et al. The effect of ceria nanoparticles on improving heat resistant properties of fluorosilicone rubber［J］. Journal of Applied Polymer Science， 2016， 133（42）： 1-8.［17］ Qiu Jiedong， Wu Ting， Qu Jinping. Fabrication of iron oxide nanoparticle decorated boron nitride nanosheet for flame-retarding silicone rubber［J］. Materials Letters， 2021， 283： 128712.［18］ 王荣华， 冯典英， 李晖， 等. 特种氟硅橡胶热空气老化的衰减全反射傅里叶变换红外光谱研究［J］. 合成橡胶工业， 2014， 37（3）： 169- 172.［19］ Sugama T， Pyatina T， Redline E， et al. Degradation of diffe-rent elastomeric polymers in simulated geothermal environments at 300 ℃［J］. Polymer Degradation and Stability， 2015， 120： 328-339.

备注/Memo

备注/Memo:

国家自然科学基金面上项目（21978088）。

常用功能

更新日期/Last Update: 1900-01-01