| 摘要 |
PROBLEM TO BE SOLVED: To effectively apply a post-vulcanization adhering method even by using an NBR containing an intermediate nitrile amount to a high nitrile amounts by post-vulcanizing the NBR in the state that an interface between an adhesive-treated metal and a white carbon-containing NBR vulcanized material is coated with a plasticizer having a specific value of a solubility parameter. SOLUTION: As a metal for forming a composite material of an NBR coating, a stainless steel sheet or the like roughed on its surface by shot blasting or the like is used. As an NBR vulcanized material, a material surface-cleaned to remove a contaminant in a blooming brought about by a mold release agent, a plasticizer, a vulcanizer or the like is used. In a post-vulcanization adhering method using the NBR vulcanized material, an interface between an adhesive treated metal and the NBR vulcanized material containing a white carbon such as an anhydrous silica or the like is coated with a plasticizer such as a tricresyl phosphate or the like having a solubility parameter of 9.5 or above as an engaging liquid, the both are superposed, compressed, heated and post- vulcanized. Thus, this can be effectively applied even to the post-vulcanization adhering method of the NBR containing a low nitrile content to intermediate and high nitrile contents. |
