Effect of type and content of tackifier on adhesion of natural rubber and reclaimed natural rubber based sealant

Innovation in Polymer Science and Technology 2016

材料科学;化学

Raethong, P.^1 ; Boonkerd, K.^2

Multidisciplinary Program in Petrochemistry and Polymer Science, Faculty of Science Chulalongkorn University, Thailand^1

Department of Materials Science, Faculty of Science, Chulalongkorn University, Thailand^2

关键词: Adhesion properties;    Adhesive failure;    Cohesive failures;    Tackifiers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/223/1/012011/pdf
DOI  :  10.1088/1757-899X/223/1/012011

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Adhesion property of natural rubber (NR) and reclaimed natural rubber (RNR) based sealant with concrete was studied here. The effect of tackifier type and loading on the tensile properties of the rubber based sealant sandwished between two flat cements was evaluated. There are three different tackifiers including Coumarone-indene resin (CI), petro resin (PE) and gum rosin (GR). The result initially showed that at the 20 phr of tackifier both NR and RNR sealant mixed with CI consumed the highest force to separate the rubber based sealant from the concrete. This might be due to the highest compatiblility between CI and rubber. Regardless of the tackifier type, all NR based sealants showed the cohesive failure while all RNR based sealants only showed the adhesive failure. Moreover, the NR based sealant seemed to be stronger than the RNR based one. When considering the effect of CI loading on the adhesion, it was shown that for both NR and RNR based sealents, the highest stress was observed when the rubber based sealant loaded with the 20 phr of CI.