HUNGER密封塑料材質(zhì)介紹(中英文)
塑料根據(jù)其物理性能可分為四類:
Plastics can be divided into four groups according to their physical properties:
熱塑性塑料
Thermoplastics
熱塑性塑料是軟質(zhì)、粘塑性或硬質(zhì)的塑料。它們通過加熱而熔化,然后具有延展性。這是由于它們的內(nèi)部組成是未交聯(lián)的直鏈或支鏈分子。目前工業(yè)生產(chǎn)的聚合物的大部分(約占總產(chǎn)量的 80%)屬于這一類。
Thermoplastics are plastics which can be soft, viscoplastic or hard. They are melted by heating and are then malleable. This is due to their internal composition of unbranched or branched chain molecules which are uncrosslinked. The far bigger part of the nowadays industrially manufactured Polymers (approx. 80 % of the total production) belongs to this group.
彈性體
Elastomers
彈性體是輕微交聯(lián)的,通常具有較長的鏈并且在環(huán)境溫度下具有彈性。根據(jù)應(yīng)用溫度和玻璃化轉(zhuǎn)變溫度之間的關(guān)系,它們可以是硬質(zhì)到硬彈性或軟彈性。它們的基本特征之一是在熔化前分解。彈性體與熱塑性塑料的區(qū)別在于大分子的交聯(lián)。與熱固性材料相比,彈性體含有相對(duì)較長、未交聯(lián)且纏結(jié)的分子部分
Elastomere are slightly cross-linked, are often of comparatively long chains and have elastic properties at ambient temperature. Depending on the relation between application temperature and glass transition temperature they are hard upto hard-elastic or soft-flexible. It is one of their basic characteristics that they decompose before they melt. Elastomers distinguish themselves from the thermoplastics by the cross-linking of macromolecules. In contrast to thermosets elastomers contain comparatively long, uncrosslinked and entangled molecular moieties
熱塑性彈性體
Thermoplastic Elastomers
熱塑性彈性體結(jié)合了環(huán)境溫度下硫化彈性體(橡膠)的機(jī)械性能和熱塑性塑料的加工性能。
Thermoplastic Elastomers combine the mechanical properties of vulcanized elastomers (rubber) at ambient temperature and the processability of thermoplastics.
硬質(zhì)聚合物
Duromers
硬質(zhì)聚合物在加熱時(shí)會(huì)變硬,并且不會(huì)再次變軟。硬化是通過聚合物分子的空間集中、主要是共價(jià)交聯(lián)來實(shí)現(xiàn)的。目前,硬質(zhì)聚合物在數(shù)量上不如熱塑性塑料重要。
Duromers harden when heated up and do not become soft again. The hardening is achieved by spatially focused, mostly covalente cross-linking of Polymer molecules. Duromers are currently quantitatively less important than thermoplastics.
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