Polymer Technology Epoxy resins (i.e., epoxide polymers) Use emulsion polymerisation methods Contain an epoxy group ( ##### ) at the ends of the polymer Are cross-linked polymers only Are made by addition polymerisation reaction only Use emulsion polymerisation methods Contain an epoxy group ( ##### ) at the ends of the polymer Are cross-linked polymers only Are made by addition polymerisation reaction only ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Condensation polymerisation of caprolac-tum is carried out in the reactor maintained at a temperature of __________ °C for producing nylon-6. 250-280 100 to 150 50 to 75 -20 to 25 250-280 100 to 150 50 to 75 -20 to 25 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following polymers belong to the class of formaldehyde resin? Dacron None of these Melamine resins Teflon Dacron None of these Melamine resins Teflon ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Plastic articles are normally produced by __________ moulding. Green sand Shell Injection Dry sand Green sand Shell Injection Dry sand ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Plasticisers are high boiling liquids added to plastic polymers to impart toughness and flexibility at ordinary temperature. Which of the following is not a plasticiser? Stearic acid estors Ethylene glycol Tricresyl phosphate Esters of phthalic acid Stearic acid estors Ethylene glycol Tricresyl phosphate Esters of phthalic acid ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology The organic acid monomer in nylon 66 is Adipic acid Benzoic acid Terephthalic acid Sebasic acid Adipic acid Benzoic acid Terephthalic acid Sebasic acid ANSWER DOWNLOAD EXAMIANS APP
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