Arrhenius公式和环境作用动力学对压缩橡胶的精度比较  

Comparison of Precision of Arrhenius Formula and Environmental Action Dynamics on Compressed Rubber

作　　者：封先河[1] 魏小琴[1] 杨万均[1] 何建新[1] 李迪凡[1] FENG Xian-he;WEI Xiao-qin;YANG Wan-jun;HE Jian-xin;LI Di-fan(Southwest Institute of Technology and Engineering,Chongqing 400039,China)

机构地区：[1]西南技术工程研究所,重庆400039

出　　处：《装备环境工程》2023年第3期157-161,共5页Equipment Environmental Engineering

摘　　要：目的 精确描述压缩橡胶永久变形率的变化规律,准确评估其使用寿命。方法 应用环境作用动力学理论,建立压缩橡胶永久变形率的变化微分方程,求解微分方程得到压缩橡胶永久变形率变化规律的微分方程通解。再以氟硅橡胶为例,通过高温加速试验获取其在100、125、150、175、200℃下的试验数据,分别采用环境作用动力学通解和阿伦尼乌兹公式建立氟硅橡胶压缩永久变形率模型。最后,与3.5 a的自然环境试验数据进行对比。结果 应用环境作用动力学理论建立的氟硅橡胶压缩永久变形率模型与3.5 a自然环境试验数据的最大误差约为3.32%,而应用阿伦尼乌兹公式建立的氟硅橡胶压缩永久变形率模型的最大误差约为14%。结论 阿伦尼乌兹公式只适用于没有环境作用或固定环境作用下的物质特征变化,而环境作用动力学方程中,有明确的环境作用项σ,适用于复杂环境作用下物质特征变化规律的描述。The work aims to accurately describe the change law of permanent deformation rate of compressed rubber and precisely evaluate the service life of compressed rubber.The differential equation of permanent deformation rate of compressed rubber was established by the theory of environmental action dynamics.The general solution of the differential equation of permanent deformation rate of compressed rubber was obtained by solving the differential equation.Then,with fluorosilicone rubber as an example,the test data at 100,125,150,175 and 200 were obtained through high temperature accele℃rated test.The permanent deformation rate model of compressed fluorosilicone rubber was established by the general solution of environmental action dynamics and Arrhenius formula.Finally,the natural environment test data for 3 and a half years and the model were compared.The maximum error between the permanent deformation rate model of compressed fluorosilicone rubber established by the theory of environmental action dynamics and the natural environment test data for 3 and a half years was 3.32%. The maximum error between the model established by Arrhenius formula and the natural environment test data for 3 and a half years was 14%. The Arrhenius formula is only applicable to the change of material characteristics without environmental action or fixed environmental action. There is a clear environmental action term σ in the environmental action kinetic equation and it is applicable to the description of the change law of material characteristics under the action of complex environment.

关 键 词：环境作用动力学 Arrhenius公式 压缩永久变形率 氟硅橡胶 加速试验 优化算法 

分 类 号：TB322[一般工业技术—材料科学与工程]