Thermosetting and Thermoplastic
Thermosetting and Thermoplastic
Material which can be easily moulded into any desired shape on heating is called a ‘plastic’. Plastics are synthetic (man – made) polymers. Plastics form an important class of synthetic materials. In plastics, the arrangement of the individual units may be linear or cross-linked.
There are Basically Two Types of Plastics :
Thermoplastics |
Thermosetting plastics |
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1 Thermoplastics are long chain polymers with no cross linking. Heating also does not produce any cross linking between the chains. |
1.Thermosetting plastics are the polymers in which chains get highly cross lined on heating. |
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2. Thermoplastics can be melted by heating and thereafter moulded into desired Shapes. This is a reversible process. |
2. Unlike thermoplastics, thermosetting plastics cannot be remoulded after reheating. |
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3. PVC (Polyvinyl chloride) and LDPE (low-density polyethylene) are examples of thermoplastics. |
3. Melamine and Bakelite are example of thermosetting plastics. |
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Which of the following statements is true for thermoplastic and thermosetting plastic? | |||
| Right Option : C | |||
| View Explanation |
A few polymer are grouped together on the basis of some common properties as follows: i. Rayon, Acrylic, Nylon, Jute ii. PVC, Melamine, Teflon iii. Polycot, Terrywool, Acrylic Select the odd one out in these groups | |||
| Right Option : C | |||
| View Explanation | |||
Example of thermosetting plastic is ______________ | |||
| Right Option : B | |||
| View Explanation | |||
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