高分子材料题目

高分子材料题目
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CHAPTER 1 Polymer material

<1> The unique material properties of __ and the versatility of their __ methods are attributed to their molecular structure .

<2>Traditionally , the industry has produced two main types of synthetic polymer - ___ and ___.

<3>塑料主要被分为_____和______两种类型,橡胶主要被分为__天然橡胶___和__人工合成橡胶____两种类型。

<4>Thermosets can be defined as those polymers which become ___B__ hard on heating or by addition of special chemicals .

A reversibly B irreversibly

<5>__B__ share a feature with conventional vulcanized rubbers .

A Thermoplastics B Thermosets

判断题

<6>由于当今人们已普遍使用塑料,所以塑料是很便宜的。(F )

<7>天然橡胶是最主要橡胶材料。( F)

<8>What are the reasons for the continued growth in the use of polymers ?

Answer: electrical insulation since non-conducting ;toughness to

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