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Polymer Technology

Polymer Technology
Cross linked polymers are

Either A or B
Thermoplastic
Fibres only
Thermosetting

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Polymer Technology
All thermoplastic, thermosetting & elastic materials can be processed in a extrusion machine, however it can not be used for the production of plastic

Tubings
Filaments
Pipes
Buckets

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Polymer Technology
Polyesters are manufactured by the polycondensation reaction of

Inorganic acid with ethylene glycol
A single monomer
Dibasic acid with dihydric alcohol
Carboxylic acid with ethylene

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Polymer Technology
The rate controlling step in the manufacture of silicone rubber is the

Initial hydrolysis of silicone monomer
Condensation of siloxane to silicone
None of these
Polymer termination step

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Polymer Technology
Condensation of bisphenol A with phosgene produces __________ which possess very good heat resistance.

Polycarbonate
Polysulphone
Polyurathane
Polyester

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Polymer Technology
Temperature and gage pressure maintained during the manufacture of hot SBR (styrene butediene rubber) are

50°C and 1 kgf/cm²
250°C and 10 kgf/cm²
250°C and 1 kgf/cm²
50°C and 3 - 4 kg/cm²

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