Thermal parameters of S2/430LV shipboard composite materials based on thermal decomposition
In order to study the thermal parameters of S2/430LV before and after thermal decomposi-tion,firstly,a thermogravimetric analyzer was used to conduct thermogravimetric tests on S2/430LV composite materials and 430LV resin in a N2 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 de-composition 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.
thermogravimetric testArrhenius equationactivation energymechanism functionpre-exponential factormixing lawthermal parameter model
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