Gallate ester of castor oil as a multifunctional additive in HAF carbon black–filled natural rubber composites,Journal of Vinyl and Additive Technology

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Gallate ester of castor oil as a multifunctional additive in HAF carbon black–filled natural rubber composites
Journal of Vinyl and Additive Technology ( IF 3.8 ) Pub Date : 2021-12-06 , DOI: 10.1002/vnl.21886
Heba Kandil ₁ , Moshera Samy ₁ , Doaa E. El‐ Nashar ₁

Affiliation

A multifunctional additive based on castor oil (gallate ester of castor oil [GECO]) for rubber composites was synthesized via esterification between castor oil (CO) and gallic acid (GA). Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA) were used to characterize the GECO. GECO was applied at different loadings (1, 2, and 4 phr) in high abrasion furnace (HAF) carbon black–filled natural rubber (NR) composite to study its effect on the curing, swelling, mechanical, and aging properties of the resulting composite. It was found that the use of GECO accelerated the curing process effectively and endowed the resulting composites with significantly better antiaging properties than the control composite containing the traditional antioxidant, N-isopropyl-N′-phenyl-1,4-phenylenediamine (IPPD). Additionally, it was found that the use of 1 phr of GECO enhanced the swelling and mechanical properties of the resulting composite, and after this level, a slight decrease in the properties was observed. Scanning electron microscopy results confirmed that the use of 1 phr of GECO caused a better dispersion of HAF within the NR matrix which resulted in an enhancement in the HAF reinforcement.

中文翻译：

蓖麻油没食子酸酯作为 HAF 炭黑填充天然橡胶复合材料的多功能添加剂

采用蓖麻油 (CO) 和没食子酸 (GA) 的酯化反应合成了一种用于橡胶复合材料的基于蓖麻油的多功能添加剂（蓖麻油没食子酸酯 [GECO]）。傅里叶变换红外光谱 (FTIR) 和热重分析 (TGA) 用于表征 GECO。GECO 在高磨损炉 (HAF) 炭黑填充天然橡胶 (NR) 复合材料中以不同的负载量（1、2 和 4 phr）应用，以研究其对所得的固化、溶胀、机械和老化性能的影响合成的。发现使用 GECO 有效地加速了固化过程，并赋予所得复合材料显着优于含有传统抗氧化剂 N-异丙基- N'-的对照复合材料的抗老化性能。苯基- 1 , 4 -苯二胺(IPPD)。此外，发现使用 1 份 GECO 增强了所得复合材料的溶胀和机械性能，在此水平之后，观察到性能略有下降。扫描电子显微镜结果证实，使用 1 份 GECO 可使 HAF 在 NR 基体中更好地分散，从而增强 HAF 增强效果。

更新日期：2021-12-06

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