彈性體的定義很簡(jiǎn)單，所謂彈性體是指玻璃化溫度低于室溫，扯斷伸長(zhǎng)率>50%，外力撤出后復(fù)原性較好的高分子化合物。根據(jù)以上定義我們可以看出橡膠（Rubber）與彈性體（Elastomer）這兩個(gè)詞的內(nèi)涵的異同之處。首先這兩個(gè)詞都只具有高彈性（elasticity）的物質(zhì)，但是rubber的范圍更窄一些，是能夠被交聯(lián)成不溶解?？扇軡q狀態(tài)的材料。所以就嚴(yán)格意義的橡膠與彈性體材料來(lái)說(shuō)，彈性體是包含橡膠的名詞。

TB Wood's is an industry leading designer and manufacturer of mechanical power transmission equipment for industrial applications.  Our mechanical product lines include: synchronous, v-belt, and belted variable speed drives; grid, disk, jaw, gear and elastomeric coupling products; sheaves and bushings, sprockets and clutches. Registered trademarks include Sure-Flex®, Dura-Flex® Form-Flex®, G-Flex® and QT Bushing®.

TB Wood's products are sold through authorized distributors to end users and to original equipment manufacturers (OEMs).

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