Explain Thermoplastic polymers
Answers
Answer:
Thermoplastics are defined as polymers that can be melted and recast almost indefinitely. They are molten when heated and harden upon cooling. When frozen, however, a thermoplastic becomes glass-like and subject to fracture.
Explanation:
High-performance thermoplastics, also known as high-temperature thermoplastics, have melting points between 6500 and 7250 F which is up to 100% more than standard engineering thermoplastics.
Thermoplastics are light weight, with densities of . 9 to 2 gm/cc. Some high temperature thermoplastic materials can withstand temperature extremes of up to 600 F, while others retain their properties at -100 F. Some Thermoplastic materials have no known solvents at room temperature.
The service temperature is the range between the maximum and minimum temperatures that the polymer is subjected to in service. The maximum temperature is limited by softening and burning, while the minimum temperature is limited by embrittlement.
Answer:
- Are linear or slightly pahunch to long chain molecules
- capable of repeatedly Soft turning on heating and hardening on cooling
- possesses intermolecular force of attraction
- intimate rate between elastomers and fibres