Polymer Technology Polyvinyl chloride (PVC) Is produced by polycondensation reaction Softening temperature is 200°C Uses either emulsion or suspension polymerisation methods Can be made thermosetting by adding a plasticiser Is produced by polycondensation reaction Softening temperature is 200°C Uses either emulsion or suspension polymerisation methods Can be made thermosetting by adding a plasticiser ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Condensation polymerisation of __________ produces bakelite. Propylene Phenol & acetaldehyde Phenol & formaldehyde Urea & formaldehyde Propylene Phenol & acetaldehyde Phenol & formaldehyde Urea & formaldehyde ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Tyres are made by Injection moulding Extrusion Compression moulding Rotational moulding Injection moulding Extrusion Compression moulding Rotational moulding ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology The only natural thermoplastic resin, which is a product of animal life is Amber Rosin Shellac Copal Amber Rosin Shellac Copal ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Synthetic rubber Is softer at higher temperature Is brittle at low temperature Deforms, if stretched to double of its original dimension Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases Is softer at higher temperature Is brittle at low temperature Deforms, if stretched to double of its original dimension Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Chain growth polymerisation is a process, in which the monomers are added in a chain fashion, and it requires an initiator to produce the free radical. An example of chain growth polymerisation products is Polyester Nylon-66 Teflon Bakelite Polyester Nylon-66 Teflon Bakelite ANSWER DOWNLOAD EXAMIANS APP
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