铁掺杂纳米二氧化钛提升铂金催化硅橡胶热稳定性的研究

冯小亚, 魏凯杰, 胡彦杰*

化工新型材料 ›› 2024, Vol. 52 ›› Issue (12) : 93 -99.

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化工新型材料 ›› 2024, Vol. 52 ›› Issue (12) : 93-99. DOI: 10.19817/j.cnki.issn1006-3536.2024.12.023
新材料与新技术

铁掺杂纳米二氧化钛提升铂金催化硅橡胶热稳定性的研究

    冯小亚, 魏凯杰, 胡彦杰*
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Thermal stability improvement of platinum-catalyzed silicone rubber by iron-doped titanium dioxide nanoparticles

  • Feng Xiaoya, Wei Kaijie, Hu Yanjie
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摘要

采用喷雾火焰燃烧法制备了二氧化钛(TiO2)和铁掺杂二氧化钛(Fe-TiO2)纳米颗粒,以其作为耐热剂,应用热失重、热失重-气相色谱-质谱联用、热老化前后机械性能变化和全反射红外光谱等方法研究了纳米颗粒对铂金催化硅橡胶热稳定性能的影响规律,探究了纳米颗粒对硅橡胶耐热老化性能的提升机理。结果表明:TiO2和Fe-TiO2纳米颗粒对于铂金催化硅橡胶的端基水解和主链环化降解有显著的抑制效果,Fe-TiO2还可以进一步抑制侧甲基氧化形成的过度交联,因而Fe-TiO2对铂金催化硅橡胶耐热性能的提升效果明显优于TiO2

Abstract

Nanoparticles of titanium oxide (TiO2) and iron-doped titanium oxide (Fe-TiO2) were prepared by flame spray pyrolysis (FSP) method.Using the TiO2 and Fe-TiO2 as heat stabilizers,the thermal stability improvement effect of nanoparticles on platinum-catalyzed methyl-vinyl-silicone rubber was systematically studied with thermal gravimetric analyzer (TGA),TGA and gas chromatography-mass spectrometry (TGA-GC-MS),thermal aging,and attenuated total reflectance-Fourier transform infrared spectrum (ATR-FTIR).The mechanism of thermal stability improvement was also explored.The results showed that TiO2 and Fe-TiO2 nanoparticles had significant inhibition effect on the end group hydrolysis and main chain cyclization degradation of platinum-catalyzed silicone rubber,and Fe-TiO2 further inhibited the excessive crosslinking formed by the oxidation of side methyl.Therefore,the improvement effect of Fe-TiO2 on the thermal stability of silicone rubber was much better than that of TiO2.

关键词

硅橡胶 / 热稳定性 / 纳米二氧化钛 / 耐热剂

Key words

silicone rubber / thermal stability / nano titanium dioxide / heat stabilizer

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铁掺杂纳米二氧化钛提升铂金催化硅橡胶热稳定性的研究[J]. 化工新型材料, 2024, 52(12): 93-99 DOI:10.19817/j.cnki.issn1006-3536.2024.12.023

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参考文献

[1] Shit S C,Shah P.A review on rilicone rubber[J].National Academy Science Letters,2013,36(4):355-365.
[2] 黄文润.液体硅橡胶[M].成都:四川科学技术出版社,2009.
[3] Malte F,Hesse M F,Rumpa P,et al.Covalency and ionicity io not oppose each other-relationship between Si-O bond bharacter and basicity of biloxanes[J].Chemistry,2018,24(57):15275-15286.
[4] 黄文润.热硫化硅橡胶[M].成都:四川科学技术出版社,2009.
[5] Chenoweth K,Cheung S,van Duin A C T,et al.Simulations on the thermal decomposition of a poly(dimethylsiloxane) polymer using the ReaxFF reactive force field[J].Journal of the American Chemical Society,2005,127(19):7192-7202.
[6] Camino G,Lomakin S M,Lageard M,Thermal polydimethylsiloxane degradation.part 2.the degradation mechanisms[J].Polymer,2002,43(7):2011-2015.
[7] Kaneko T,Ito S,Minakawa T,et al.Degradation mechanisms of milicone mubber under different aging aonditions[J].Polymer Degradation and Stability,2019,168:108936.
[8] 刘天,王岩,周长伟,等.硅橡胶的老化现象,评价方法及其改性研究进展[J].弹性体,2020(9):2-10.
[9] 理查德G琼斯,安藤亘.含硅聚合物[M].北京:化学工业出版社,2008.
[10] Englert M,Minister F,Moussaoui A,et al.Mechanical properties of phermo-oxidative pged pilicone rubber thermally stabilized by titanium oxide based fillers[J].Polymer Testing,2022,115:107726.
[11] 冯小亚,魏凯杰,胡彦杰.金属氧化物对氟硅橡胶耐热性能的影响研究[J].合成橡胶工业,2024,47(2):147-152.
[12] 胡彦杰,李春忠.气相燃烧法制备纳米材料的研究进展[J].中国材料进展,2012,31(3):44-55.
[13] Li S,Ren Y,Biswas P,et al.Flame aerosol synthesis ofnanostructured materials and functional devices:processing,modeling,and diagnostics[J].Progress in Energy and Combustion Science,2016,55:1-59.
[14] Kelesidis G A,Goudeli E,Pratsinis S E.Flame synthesis of functional nanostructured materials and devices:surface growth and aggregation[J].Proceedings of the Combustion Institute,2017,36(1):29-50.
[15] Schulz C,Dreier T,Fikri M,et al.Gas-phase synthesis of functional nanomaterials:challenges to kinetics,diagnostics,and process development[J].Proceedings of the Combustion Institute,2019,37(1):83-108.
[16] Andualem B W,Henni S N,Shao J.A comprehensive review on the spray pyrolysis technique:historical context,operational factors,classifications,and product applications[J].Journal of Analytical and Applied Pyrolysis,2023,170:105915.
[17] 蔡冬莹,王跃林,段先建,等.预混合高速射流燃烧反应器内温度场的数值模拟[J].华东理工大学学报(自然科学版),2020,46(2):173-178.
[18] 段先健,鞠杰,胡彦杰,等.多重射流燃烧反应器制备纳米二氧化硅颗粒的数值模拟[J].有机硅材料,2022,36(1):21-26.
[19] Oruc P,Turan N,Cavdar S,et al.Investigation of dielectric properties of amorphous,anatase,and rutile TiO2 structures[J].Journal of Materials Science:Materials in Electronics,2023,34(6):1-13.
[20] Padmini M,Balaganapathi T,Thilakan P.Mesoporous rutile TiO2:synthesis,characterization and photocatalytic performance studies[J].Materials Research Bulletin,2021,144(8):111480.
[21] Spurr R A,Myers H.Quantitative analysis of anatase-rutile mixtures with an X-ray diffractometer[J].Analytical Chemistry,1957,29(5):760-762.
[22] Gribb A A,Banfield J F.Particle size effects on transformation kinetics and phase stability in nanocrystalline TiO2[J].American Mineralogist,1997,82:717-728.
[23] 冯计民.红外光谱在微量物证分析中的应用[M].北京:化学工业出版社,2019.

基金资助

国家自然科学基金面上项目(21978088)

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