This study investigates silicone rubber–conductive carbon black (CCB) composites for antistatic applications aimed at protecting electronic devices from electrostatic discharge (ESD). The effects of the CCB concentration on the electrical and mechanical properties of the composites were analyzed. As the CCB concentration increased, the mechanical properties gradually decreased, while direct current (DC) conductivity increased. Composites containing 15 parts per hundred rubber (phr) of CCB exhibited effective antistatic properties with a resistivity of 9.37 × 10⁴ Ω cm. Morphological analysis revealed that CCB was uniformly dispersed at lower concentrations but agglomerated at higher loadings. Power law fitting indicated a percolation threshold around 10 phr of CCB, suggesting the formation of a conductive network. Solvent transport and dissolution studies showed that the CCB network hindered diffusion, with diffusion behavior transitioning from Fickian to non-Fickian behavior, best described by the Peppas–Sahlin model. Additionally, molecular mass and crosslink density measurements confirmed the development of a network structure, which is critical for enhancing antistatic performance. These findings highlight the potential of CCB-based silicone rubber composites for effective ESD protection in electronic applications.

中文翻译：

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用于抗静电应用的硅橡胶-导电炭黑复合材料的机械、电气、形态和溶剂传输特性


本研究调查了硅橡胶-导电炭黑 （CCB） 复合材料的抗静电应用，旨在保护电子设备免受静电放电 （ESD） 的影响。分析了 CCB 浓度对复合材料电学和力学性能的影响。随着 CCB 浓度的增加，机械性能逐渐降低，而直流电导率增加。含有 15 ppm 橡胶 （phr） 的 CCB 复合材料表现出有效的抗静电性能，电阻率为 9.37 × 10⁴ Ω cm。形态学分析表明，CCB 在较低浓度下均匀分散，但在较高负载量下团聚。幂律拟合表明 CCB 的渗透阈值约为 10 phr，表明形成了导电网络。溶剂传输和溶解研究表明，CCB 网络阻碍了扩散，扩散行为从 Fickian 转变为非 Fickian 行为，Peppas-Sahlin 模型对此进行了最好的描述。此外，分子量和交联密度测量证实了网络结构的发展，这对于增强抗静电性能至关重要。这些发现凸显了基于 CCB 的硅橡胶复合材料在电子应用中有效 ESD 保护的潜力。