In the retreading industry, generally two types of adhesives say a solid adhesive (bonding gum) and a solution adhesive (black vulcanising cement) are mainly used. In this study, the performance of natural rubber (NR)-based solution adhesive for the rubber to rubber bonding was examined. The effect of different grades of carbon black (CB) say ISAF (N220), HAF (N330) and GPF (N660) as a reinforcing filler in adhesive was evaluated. The loading used was different for the three grades of CB to achieve the required level of hardness for the adhesive. A blend of natural rubber and butadiene rubber (BR) was used as the adherend substrate. The vulcanisation characteristics, mechanical properties, swelling measurements and adhesion strength of different CB-filled NR-based solution adhesive were studied. All the three grades of CB-filled NR-based adhesives showed an increase in the rheometer torque and crosslink density compared to unfilled NR-based adhesive. The incorporation of CB improved the mechanical properties, adhesion strength and thermal stability of NR-based adhesives. CB-filled NR adhesives showed lower solvent uptake compared to unfilled ones. The measured properties of all the three grades of CB-filled NR-based solution adhesives were found to be comparable at the fixed hardness level.

在翻新行业中，通常主要使用两种类型的粘合剂，即固体粘合剂（粘结胶）和溶液粘合剂（黑色硫化水泥）。在这项研究中，研究了基于天然橡胶（NR）的溶液粘合剂在橡胶与橡胶之间的粘合性能。评估了不同级别的炭黑（CB），例如ISAF（N220），HAF（N330）和GPF（N660）作为粘合剂中的增强填料的效果。为了达到粘合剂所需的硬度水平，三种等级的CB所使用的载荷是不同的。天然橡胶和丁二烯橡胶（BR）的混合物用作被粘物基材。研究了不同的CB填充NR基溶液胶的硫化特性，力学性能，溶胀度和粘合强度。与未填充的NR基粘合剂相比，所有三种等级的CB填充NR基粘合剂均显示出流变仪扭矩和交联密度的增加。CB的加入改善了NR基胶粘剂的机械性能，粘合强度和热稳定性。与未填充的粘合剂相比，CB填充的NR粘合剂显示出更低的溶剂吸收。发现在固定硬度水平下，所有三种等级的CB填充NR基溶液粘合剂的测量性能均相当。