当前位置: X-MOL 学术Prog. Rubber Plast. Recycl. Technol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Comparative evaluation of oil resistance, dielectric properties, AC conductivity, and transport properties of nitrile rubber and chlorinated nitrile rubber
Progress in Rubber, Plastics and Recycling Technology ( IF 2.6 ) Pub Date : 2020-05-20 , DOI: 10.1177/1477760620925490
A Nihmath 1 , MT Ramesan 1
Affiliation  

Nitrile rubber (NBR) has been extensively used in high oil resistance application such as in automotive seals and gaskets. Due to the poor mechanical strength of NBR, the performance of these products undergoes deterioration when it is in contact with hot oils and solvents. The aim of the present work is to investigate the molecular transport of petroleum fuels and oil through chlorinated NBR (Cl-NBR) with respect to different contents of chlorine. It also focuses on the effect of chlorine content on the alternating current (AC) conductivity and dielectric properties of Cl-NBR for flexible electronic applications. The transport characteristics of petroleum fuels through the NBR and Cl-NBR membranes have been studied by a simple sorption gravimetric analysis in the temperature range 27–50°C. The diffusion results have been explained in terms of the size of liquid molecules and the diffusion mechanism was found to follow the anomalous trend. The diffusion, sorption, solvent uptake, and permeation constants were investigated and were found to decrease with increase in the level of chlorine content in NBR matrix. The activation energy for diffusion and permeation processes were increased and reached maximum value for Cl-NBR (22% Cl content). The oil resistance property of Cl-NBR was significantly higher than pure NBR. The swelling of Cl-NBR in ASTM oil was three times lower than NBR. The electrical conductivity and dielectric properties of NBR was found to be increased with the increase in chlorine content of NBR. NBR showed the AC conductivity value of 7.24 S cm−1 at 106 Hz, while the Cl-NBR with 24% chlorine showed the conductivity value of 4.69 S cm−1. The higher AC conductivity and dielectric properties, solvent, and oil resistance of Cl-NBR than that of NBR suggests that the Cl-NBR can be used as multifunctional materials for flexible nano-electronic devices and high-performance oil-resistant applications.



中文翻译:

丁腈橡胶和氯化丁腈橡胶的耐油性,介电性能,交流电导率和传输性能的比较评估

丁腈橡胶(NBR)已广泛用于高耐油性应用,例如汽车密封件和垫片。由于NBR的机械强度差,当这些产品与热油和溶剂接触时,其性能会下降。本工作的目的是针对氯的不同含量,研究石油燃料和石油通过氯化NBR(Cl-NBR)的分子传输。它还关注氯含量对柔性电子应用中Cl-NBR的交流电(AC)电导率和介电性能的影响。石油燃料通过NBR和Cl-NBR膜的传输特性已通过在27–50°C温度范围内的简单吸附重量分析进行了研究。已经根据液体分子的大小解释了扩散结果,并且发现扩散机制遵循异常趋势。研究了扩散,吸附,溶剂吸收和渗透常数,发现它们随着NBR基体中氯含量的增加而降低。扩散和渗透过程的活化能增加,并达到Cl-NBR的最大值(22%Cl含量)。Cl-NBR的耐油性明显高于纯NBR。Cl-NBR在ASTM油中的溶胀比NBR低三倍。发现NBR的电导率和介电性能随NBR中氯含量的增加而增加。NBR的交流电导率值为7.24 S cm 研究了渗透常数和渗透常数,发现其随NBR基体中氯含量的增加而降低。扩散和渗透过程的活化能增加,并达到Cl-NBR的最大值(22%Cl含量)。Cl-NBR的耐油性明显高于纯NBR。Cl-NBR在ASTM油中的溶胀比NBR低三倍。发现NBR的电导率和介电性能随NBR中氯含量的增加而增加。NBR的交流电导率值为7.24 S cm 研究了渗透常数和渗透常数,发现其随NBR基体中氯含量的增加而降低。扩散和渗透过程的活化能增加,并达到Cl-NBR的最大值(22%Cl含量)。Cl-NBR的耐油性明显高于纯NBR。Cl-NBR在ASTM油中的溶胀比NBR低三倍。发现NBR的电导率和介电性能随NBR中氯含量的增加而增加。NBR的交流电导率值为7.24 S cm Cl-NBR的耐油性明显高于纯NBR。Cl-NBR在ASTM油中的溶胀比NBR低三倍。发现NBR的电导率和介电性能随NBR中氯含量的增加而增加。NBR的交流电导率值为7.24 S cm Cl-NBR的耐油性明显高于纯NBR。Cl-NBR在ASTM油中的溶胀比NBR低三倍。发现NBR的电导率和介电性能随NBR中氯含量的增加而增加。NBR的交流电导率值为7.24 S cm在10 6 Hz -1下,而氯含量为24%的Cl-NBR的电导率值为4.69 S cm -1。Cl-NBR比NBR具有更高的交流电导率和介电性能,耐溶剂性和耐油性,这表明Cl-NBR可以用作多功能材料,用于柔性纳米电子器件和高性能耐油应用。

更新日期:2020-06-30
down
wechat
bug