蜜胺微球对橡胶硫黄硫化动力学的影响
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摘要
以硫黄为硫化体系,将蜜胺微球(MF)分别填充到丁腈橡胶(NBR)和丁苯橡胶(SBR)中,通过傅里叶变换红外光谱(FTIR)分析了MF和2种橡胶的相互作用,考察了MF用量对2种混炼胶硫化特性的影响,并利用Ghoreisy模型研究了硫化动力学。结果表明,MF与NBR之间的相互作用较强,而与SBR之间的相互作用较弱;随着MF用量的增加,NBR和SBR混炼胶的焦烧时间和正硫化时间均缩短,硫化速率和转矩差值均增大,硫化反应活化能均逐渐降低,且相比NBR混炼胶,MF对SBR混炼胶的影响更显著;利用Ghoreisy模型能很好地描述NBR和SBR混炼胶的硫化动力学。
Melamine formaldehyde microsphere( MF) was incorporated into nitrile butadiene rubber( NBR) and styrene butadiene rubber( SBR) with sulfur as curing system respectively. The interaction between MF and two rubbers were analyzed by Fourier transform infrared spectroscopy,and the effects of MF amount on curing characteristics of the compounds were investigated and the kinetics of curing was studied by Ghoreisy 's model. The results showed that interaction between MF and NBR were stronger than that of between MF and SBR. With increasing MF amount,the scorch time and curing time of NBR and SBR compounds reduced,the curing rate as well as torque difference increased,and the curing activation energy reduced gradually. In contrast with those of NBR,the properties of SBR compounds could be improved with MF more effectively. The Ghoreisy's model could simulate the curing kinetics accurately.
Melamine formaldehyde microsphere( MF) was incorporated into nitrile butadiene rubber( NBR) and styrene butadiene rubber( SBR) with sulfur as curing system respectively. The interaction between MF and two rubbers were analyzed by Fourier transform infrared spectroscopy,and the effects of MF amount on curing characteristics of the compounds were investigated and the kinetics of curing was studied by Ghoreisy 's model. The results showed that interaction between MF and NBR were stronger than that of between MF and SBR. With increasing MF amount,the scorch time and curing time of NBR and SBR compounds reduced,the curing rate as well as torque difference increased,and the curing activation energy reduced gradually. In contrast with those of NBR,the properties of SBR compounds could be improved with MF more effectively. The Ghoreisy's model could simulate the curing kinetics accurately.
引文
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[4]Zhang Xumin,Xue Xiaodong,Jia Hongbing,et al.Influence of ionic liquid on the polymer-filler coupling and mechanical properties of nano-silica filled elastomer[J].Journal of Applied Polymer Science,2016,134(7):44478.
[5]Ma Shaomeng,Hou Xianhua,Huang Yanling,et al.Polymer microsphere-assisted synthesis of lithium-rich cathode with improved electrochemical performance[J].Ceram Int,2016,42(4):4899-4910.
[6]Yang Hongbin,Kang Wanli,Yu Yang,et al.A new approach to evaluate the particle growth and sedimentation of dispersed polymer microsphere profile control system based on multiple light scattering[J].Powder Technol,2017,315:477-485.
[7]Windham A D.,Lowe P M.,Conley K W,et al.Controlled thiolene polymer microsphere production using a low-frequency acoustic excitation coaxial flow method[J].Polymer,2016,94:8-13.
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[9]Jiang Ziwei,Liu Gousheng.Microencapsulation of ammonium polyphosphate with melamine-formaldehyde-tris(2-hydroxyethyl)isocyanurate resin and its flame retardancy in polypropylene[J].RSC Advances,2015,5(107):88445-88455.
[10]Baraka A,Hall P J,Heslop M J.Preparation and characterization of melamine-formaldehyde-DTPA chelating resin and its use as an adsorbent for heavy metals removal from wastewater[J].Reactive and Functional Polymers,2007,67(7):585-600.
[11]Shin Younsook,Yoo Dong-Il,Son Kyunghee.Development of thermoregulating textile materials with microencapsulated phase change materials(PCM)(Ⅱ):Preparation and application of PCM microcapsules[J].Journal of Applied Polymer Science,2005,96(6):2005-2010.
[12]Ishioka Tsutomu,Shibata Youko,Takahashi Mizuki,et al.Vibrational spectra and structures of zinc carboxylates(Ⅱ):Anhydrous zinc acetate and zinc stearate[J].Spectrochimica Acta(part A):Molecular and Biomolecular Spectroscopy,1998,54(12):1811-1818.
[13]Zhao Qian,Liu Qingyang,Xu Huihui,et al.Preparation and characterization of room temperature vulcanized silicone rubber usingα-amine ketoximesilanes as auto-catalyzed cross-linkers[J].RSC Advances,2016,6(44):38447-38453.
[14]Woff S,Wang Mengjiao.Carbon black reinforcement of elastomers[M].Donnet J B.Carbon black:Science and technology.New York:CRC Press.1993:289-356.
[15]Wang Jingyi,Jia Hongbing,Ding Lifeng,et al.The mechanism of carbon-silica dual phase filler modified by ionic liquid and its reinforcing on natural rubber[J].Polymer Composites,2015,36(9):1721-1730.
[16]张佳佳,张旭敏,刘鹏章,等.炭黑-白炭黑双相粒子填充天然橡胶的硫化动力学[J].合成橡胶工业,2015,38(5):390-394.