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 ___.
<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
<8>What are the reasons for the continued growth in the use of polymers ?
Answer: electrical insulation since non-conducting ;toughness to