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<p>This study investigates the enhancement of rubber properties through the incorporation of nanosilica (NS) modified with bis[3-(triethoxysilyl)propyl]tetrasulfide (TESPT) and γ-aminopropyltriethoxysilane (APTES) in chlorinated ethylene propylene diene monomer/chlorinated acrylonitrile butadiene rubber (ClEM/ClNR) composites. The dispersal of NS within the rubber matrix is crucial for improving properties. An in-situ surface modification method was employed, treating NS with TESPT. This approach significantly improved filler dispersion and compatibility with the ClEM/ClNR matrix. Curing studies demonstrated faster scorch time, cure time, and increased maximum torque for the APTES-modified nanosilica (APTES-NS) incorporated ClEM/ClNR compounds compared to pure ClEM/ClNR, NS-filled ClEM/ClNR composites, and TESPT-modified nanosilica (TESPT-NS)-filled ClEM/ClNR composites. The chemical connections formed between APTES's silanol groups and the NS surface contributed to enhanced curing efficiency and mechanical properties. Moreover, APTES-NS exhibited improved abrasion resistance, solvent swelling resistance, and compression set due to nanosilica's higher reinforcing efficiency. Overall, APTES-NS presents a promising avenue for tailoring properties in rubber-matrix composites.</p>

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Enhancing properties of chlorinated ethylene propylene diene monomer/chlorinated acrylonitrile butadiene rubber (ClEM/ClNR) composites through TESPT and APTES modified nanosilica

  • 期刊论文

  • 发表日期：

    2025年2月11日

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  • S. Arunkumar,
  • S. Vijayakumar

摘要

This study investigates the enhancement of rubber properties through the incorporation of nanosilica (NS) modified with bis[3-(triethoxysilyl)propyl]tetrasulfide (TESPT) and γ-aminopropyltriethoxysilane (APTES) in chlorinated ethylene propylene diene monomer/chlorinated acrylonitrile butadiene rubber (ClEM/ClNR) composites. The dispersal of NS within the rubber matrix is crucial for improving properties. An in-situ surface modification method was employed, treating NS with TESPT. This approach significantly improved filler dispersion and compatibility with the ClEM/ClNR matrix. Curing studies demonstrated faster scorch time, cure time, and increased maximum torque for the APTES-modified nanosilica (APTES-NS) incorporated ClEM/ClNR compounds compared to pure ClEM/ClNR, NS-filled ClEM/ClNR composites, and TESPT-modified nanosilica (TESPT-NS)-filled ClEM/ClNR composites. The chemical connections formed between APTES's silanol groups and the NS surface contributed to enhanced curing efficiency and mechanical properties. Moreover, APTES-NS exhibited improved abrasion resistance, solvent swelling resistance, and compression set due to nanosilica's higher reinforcing efficiency. Overall, APTES-NS presents a promising avenue for tailoring properties in rubber-matrix composites.