Investigation on effects of dynamic fatigue frequency,temperature and number of cycles on the adhesion of rubber to steel cord by a new testing technique |
| |
Authors: | Xinyan Shi Mingqiang Ma Chengbo Lian Dawei Zhu |
| |
Institution: | 1. Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber and Plastics, Qingdao University of Science and Technology, Qingdao 266042, People''s Republic of China;2. Hangzhou Zhongce Rubber Co. Ltd., Hangzhou 310008, People''s Republic of China |
| |
Abstract: | The effects of dynamic fatigue frequency, temperature and number of cycles on the adhesion of rubber to steel cord in a carcass recipe were examined. A new test method with special rubber/steel cord specimens was developed for the dynamic fatigue measurements which were carried out on a De Mattia Rubber Flexometer. It was found that the dynamic “pull-out forces” decreased with increase of fatigue frequency, but first increased and then decreased with increasing temperature and the number of fatigue cycles. The adhesion failure mainly occurred in the rubber phase rather than at the rubber/steel cord interface. The covered rubber on the “pulled-out” cord after fatigue appeared to form a screw thread and the greater pull-out force corresponded to more uniform and clearer screw threads in the rubber remaining on the cord. Steel cord with an outer wrapping wire had greater static adhesion force and better adhesion after fatigue; the adhesion failure mainly occurred in the rubber phase but some occurred at the contact point of the outer wrapping wire and the wrapped main steel wires. The screw threads of rubber coverage appeared along the twist direction of the outer wrapping wire. SEM indicated that un-dispersed filler agglomerates may initiate adhesion failure. |
| |
Keywords: | Dynamic fatigue Adhesion Rubber/steel cord |
本文献已被 ScienceDirect 等数据库收录! |