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Effect of green modification of nanoclay on the adhesion behaviour of EPDM rubber to polyester fabric
International Journal of Adhesion and Adhesives ( IF 3.4 ) Pub Date : 2020-07-01 , DOI: 10.1016/j.ijadhadh.2020.102617
Hesham Moustafa , Samir N. Lawandy , Marwa Rabee , Magdy A.H. Zahran

Abstract Rubber-coated fabrics have received much attention because of their excellent processability and unique mechanical properties. In this research, two approaches were used to prepare organoclay/ethylene propylene diene terpolymer (OC/EPDM) nanocomposites. One of them was based upon a nonpolar EPDM in which the EPDM was grafted with maleic anhydride (EPg) with OC namely (OC/EPg/EPDM); while the other was based on a green modified organoclay in which stearic acid was used to form an expanded organoclay (EOC) namely (EPDM/EOC). The EPDM compounds were loaded with 20 wt% of a long oil alkyd resin based on soyabean oil (LAR). The bonding system applied in the mixes consisted of hexamethylenetetramine-resorcinol-hydrated silica (HRH). The different mixes were loaded with different concentrations of OC and EOC. The rubber nanocomposites were immersed in an equal weight of toluene to prepare a rubber dough. This dough was spread over a polyester fabric; cured to form the final proofed product. The peel strength technique was used to assess the adhesion strength between the EPDM rubber and the polyester fabric. The reaction mechanism of EOC with the EPDM/polyester fabric in the presence of a bio-alkyd resin was studied. Moreover, the rubber proofed fabric was subjected to ultraviolet (UV) irradiation at different doses. The net product of proofed fabric was also subjected to various tests such as air and water permeability, flammability and antimicrobial activity. In all cases, the use of the EOC/EPDM or the OC/EPg/EPDM systems enhanced the physico-mechanical and physico-chemical properties of the rubber-proofed fabrics with the exception of thermal stability as determined from themogravimetric analysis which decreased, especially the degradation onset temperature (T10%). These materials provide a promising approach for use in advanced rubber technology applications.

中文翻译:

纳米粘土绿色改性对三元乙丙橡胶与涤纶织物粘附行为的影响

摘要 橡胶涂层织物因其优异的加工性能和独特的力学性能而备受关注。在这项研究中,使用两种方法来制备有机粘土/乙烯丙烯二烯三元共聚物 (OC/EPDM) 纳米复合材料。其中之一是基于非极性 EPDM,其中 EPDM 接枝有马来酸酐 (EPg) 和 OC,即 (OC/EPg/EPDM);而另一种基于绿色改性有机粘土,其中使用硬脂酸形成膨胀有机粘土 (EOC),即 (EPDM/EOC)。EPDM 化合物负载有 20 wt% 的基于大豆油 (LAR) 的长油醇酸树脂。在混合物中应用的粘合系统由六亚甲基四胺-间苯二酚-水合二氧化硅 (HRH) 组成。不同的混合物装有不同浓度的 OC 和 EOC。将橡胶纳米复合材料浸入等重量的甲苯中以制备橡胶面团。将面团铺在聚酯织物上;固化形成最终的发酵产品。剥离强度技术用于评估 EPDM 橡胶和聚酯织物之间的粘合强度。研究了EOC与EPDM/聚酯织物在生物醇酸树脂存在下的反应机理。此外,橡胶打样织物受到不同剂量的紫外线 (UV) 照射。打样织物的净产品还进行了各种测试,例如透气性和透水性、易燃性和抗菌活性。在所有情况下,EOC/EPDM 或 OC/EPg/EPDM 系统的使用增强了橡胶防粘织物的物理机械和物理化学性能,但热稳定性除外,热稳定性降低,尤其是降解起始温度(T10%)。这些材料提供了一种用于先进橡胶技术应用的有前途的方法。
更新日期:2020-07-01
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