基于热分解的舰用复合材料S2/430LV热工参数  

Thermal parameters of S2/430LV shipboard composite materials based on thermal decomposition

作　　者：陈国涛[1] 梅志远[1] 吕岩松[1] CHEN Guotao;MEI Zhiyuan;LYU Yansong(Dept.of Naval Architecture and Ocean Engineering,Naval Univ.of Engineering,Wuhan 430033,China)

机构地区：[1]海军工程大学舰船与海洋学院,武汉430033

出　　处：《海军工程大学学报》2024年第4期49-56,共8页Journal of Naval University of Engineering

基　　金：国家自然科学基金资助项目(51479205,51609252)。

摘　　要：为了研究S2/430LV在热分解前后的热工参数,首先利用热重分析仪对氮气环境中S2/430LV复合材料和430LV树脂进行30~800℃环境下热重试验,分析了两种材料在不同升温速率下热分解响应特征;然后,基于阿伦尼乌斯方程,采用微分法与积分法相结合的方法,确定了S2/430LV热分解动力学参数。研究结果表明:430LV树脂和S2/430LV复合材料在氮气环境中均呈现单一热分解过程,纤维织物会促进430LV树脂基体热分解反应;采用Kissinger方程和Flynm-Wall-Ozawa方程确定S2/430LV活化能取值范围;利用Coats-Redfern方程确定S2/430LV最优热分解机理函数和指前因子,从而建立分解率和温度的函数关系式;采用混合定律,建立了考虑材料分解的热工参数模型。研究结果可为舰艇复合材料结构耐火传热性能研究提供有效数据支撑。In order to study the thermal parameters of S2/430LV before and after thermal decomposition,firstly,a thermogravimetric analyzer was used to conduct thermogravimetric tests on S2/430LV composite materials and 430LV resin in a N 2 atmosphere at temperatures ranging from 30~800℃.Then,the pyrolysis response characteristics of the two materials at different heating rates were stu-died.Based on the Arrhenius equation,a combination of differential and integral methods was used to determine the pyrolysis kinetics parameters of S2/430LV.The research results indicate that both 430LV resin and S2/430LV composite materials exhibit a single thermal decomposition process in nitrogen environment,and fiber fabrics promote the thermal decomposition reaction of 430LV resin matrix.The range of activation energy values for S2/430LV was determined using the Kissinger equation and Flynm-Wall Ozawa equation,and the optimal pyrolysis mechanism function and pre-exponential factor of S2/430LV determined using the Coats Redfern equation.Consequently,a functional relationship between decomposition rate and temperature was established,and a thermal parameter model considering material decomposition was established using the law of mixing.The research results can serve as effective data support for the study of fire resistance and heat transfer performance of composite material structures in naval vessels.

关 键 词：热重试验 阿伦尼乌斯方程 活化能 机理函数 指前因子 混合定律 热工参数模型 

分 类 号：TB332[一般工业技术—材料科学与工程]