石油化工金属储罐表面防腐用NR/SBR共混橡胶的耐化学性

Q3 Materials Science Koroze a ochrana materialu Pub Date : 2020-06-01 DOI:10.2478/kom-2020-0010
A. Braihi, A. Jawad, A. Kadhum, H. S. Aljibori, A. Al-amiery
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引用次数: 8

摘要

摘要:本研究研制了一系列天然橡胶(NR)/丁苯橡胶(SBR)共混物,以保护金属石化储罐免受腐蚀介质的腐蚀。因此,这些混合物在室温下对10% HCl溶液进行72小时的测试。制备了不同配比的NR/SBR共混物系列;25/75、30/70、35/65、40/60、45/55、50/50和55/45。三种类型的炭黑(N-330, N-660和N-762)分别添加到45/55共混物中。在10% HCl攻击介质中浸泡前后测试了硬度、抗拉强度、模量和伸长率性能。浸泡作用后,这些力学性能均有所下降,但仍具有硬度。当NR含量达到45 phr时,硬度随浸渍作用呈线性增加,但HCl浸渍的硬度值较高。当NR含量达到40 phr时,无论浸泡与否,拉伸强度都有所提高,但浸泡作用降低了拉伸值。在35/65共混材料中,有浸渍和无浸渍的伸长率最高。当NR含量为45 phr时,其模量较高,而当NR含量为30 phr时,其模量最低。对于45/55共混物,硬度随炭黑粒径的减小而增加,浸渍作用使硬度值更高。抗拉强度随炭黑比表面积的增加而线性降低,而在中等比表面积下,获得的模量最高,伸长率最低。
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Chemical resistance of NR/SBR rubber blends for surfaces corrosion protection of metallic tanks in petrochemical industries
Abstract In this work, a series of Natural Rubber (NR)/Styrene Butadiene Rubber (SBR) blends were formulated to protect metallic petrochemical storage tanks from corrosive media. Therefore, these blends tested against a 10% HCl solution for 72 hr at room temperature. Blends series were prepared with different ratios of NR/SBR; 25/75, 30/70, 35/65, 40/60, 45/55, 50/50, and 55/45. Three types of carbon black (N-330, N-660, and N-762) were added individually to the 45/55 blend. Hardness, tensile strength, modulus, and elongation properties were tested before and after immersion in the 10% HCl attack media. All these mechanical properties decreased after immersion action accept hardness property. Up to 45 phr NR content, the hardness increased linearly independent on immersion action, but HCl immersion gives higher hardness values. Tensile strength increased up to 40 phr NR content with and without immersion and the immersion action decreased tensile values. The highest elongation value obtained with 35/65 blend with and without immersion. The 45 phr NR content gives the higher modulus, while the lowest value obtained with the 30 phhr content. For 45/55 blend, the hardness increased as the carbon black particle size decreased and immersion action gives higher hardness values. The tensile strength decreased linearly with the carbon black surface area, while with the medium surface area, the highest modulus and lowest elongation obtained.
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来源期刊
Koroze a ochrana materialu
Koroze a ochrana materialu Materials Science-Materials Science (all)
CiteScore
3.00
自引率
0.00%
发文量
8
审稿时长
14 weeks
期刊最新文献
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