| 摘要 |
<p>The heat-resistant expansive member (2) in accordance with the present invention may be used, for example, as a holding member of a ceramic honeycomb monolithic catalyst forming a catalyst converter in a low pollution engine. In this connection, the present heat-resistant expansive member is arranged such that the negative expansion in a low temperature zone is decreased and that there is restrained a decrease in performance such as an increase in shrinkage factor, a decrease in expansion coefficient or the like, yet assuring tensile strength and resiliency so that the heat-resistant expansive member can be readily used as wound. The present heat-resistant expansive member comprises 45 to 70 % by weight of treated unexpanded vermiculite having a divalent cation group, 25 to 54.9 % by weight of an inorganic fiber material such as ceramic fibers, slag/rock fibers, silica fibers, a sepiolite mineral or the like, and 0.1 to 5 % by weight of an organic binder having a vinyl acetate group. <IMAGE></p> |
