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首页> 外文期刊>Chemical Engineering Communications >Thermal aging properties and molecular transport of solvents through vulcanizates prepared from thioglycollic acid modified epoxidized low molecular weight natural rubber blends filled with admixtures of carbon black and carbonized rubber seed shell
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Thermal aging properties and molecular transport of solvents through vulcanizates prepared from thioglycollic acid modified epoxidized low molecular weight natural rubber blends filled with admixtures of carbon black and carbonized rubber seed shell

机译：热硫化性能和溶剂的分子迁移作用，该硫化物是由硫代乙醇酸改性的环氧化的低分子量天然橡胶共混物制成的硫化橡胶，填充有炭黑和碳化橡胶籽壳的混合物

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摘要

Physico-mechanical, aging, swelling, solubility, and permeability properties of blends of natural rubber (NR) and thioglycollic acid modified epoxidized low molecular weight natural rubber (TGA-ELMWNR) filled with admixtures of carbon black (CB) and carbonized rubber seed shell (CRSS) in ketones, alcohols, aldehydes, and petroleum fuels ( petrol, kerosene, and diesel) were investigated as a function of different filler compositions. The physico-mechanical properties were found decreasing as the level of CRSS increases, but were within the accepted level for natural rubber compounds, showing that CRSS can find uses as fillers in materials of low tensile strength. The aging results of all the mixes were nearly of the same magnitude. The swelling and solubility results showed that ketones swell the vulcanizates more and faster than alcohols and aldehydes. The sorption, diffusion, and permeability of the blends as determined from the gravimetric method confirm the better resistance of blends with higher ratio of carbon black. Petrol was found diffusing through the vulcanizates faster than kerosene and faster than diesel. Above all, replacement of carbon black with 15% carbonized rubber seed shell has not shown any serious deleterious effects on the vulcanizates.
机译：天然橡胶（NR）和硫代乙醇酸改性的环氧化低分子量天然橡胶（TGA-ELMWNR）的混合物的物理机械，老化，溶胀，溶解度和渗透性，填充有炭黑（CB）和碳化橡胶种子壳的混合物研究了酮，醇，醛和石油燃料（汽油，煤油和柴油）中的CRSS（CRSS），作为不同填料组成的函数。发现物理机械性能随CRSS含量的增加而降低，但在天然橡胶胶料的可接受水平之内，这表明CRSS可以用作低拉伸强度材料的填料。所有混合物的老化结果几乎相同。溶胀度和溶解度结果表明，与醇和醛相比，酮对硫化橡胶的溶胀作用更大且更快。由重量法测定的共混物的吸附，扩散和渗透性证实了炭黑比例较高的共混物具有更好的抗性。发现汽油在硫化胶中的扩散速度比煤油快，比柴油快。最重要的是，用15％碳化橡胶籽壳代替炭黑并未对硫化橡胶产生任何严重的有害影响。

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