Polymer Technology Which of the following is generally not drawn into fibre? Polyacrylonitrile Saturated polyesters Unsaturated polyesters Polyamide Polyacrylonitrile Saturated polyesters Unsaturated polyesters Polyamide ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology 90% of the caprolactum is converted to nylon-6 on its condensation polymerisation in the reactor maintained at a temperature of __________ °C. 250-280 -5 500-600 10-30 250-280 -5 500-600 10-30 ANSWER DOWNLOAD EXAMIANS APP
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 In case of dry spinning of polymers, the polymer solution in a volatile solvent is forced through the spinnerates into a warm air chamber, where the solvent evaporates leaving behind the polymer in the filament form. Dry spinning is used for __________ fibres. Polythene Polyvinyl acetate Rayon PVC Polythene Polyvinyl acetate Rayon PVC ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Temperature maintained in the emulsion polymerisation reactor for PVC manufacture is about __________ ° C. -20 250 50 500 -20 250 50 500 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology __________ is a thermosetting plastic. Bakelite PVC Polystyrene Polythene Bakelite PVC Polystyrene Polythene ANSWER DOWNLOAD EXAMIANS APP
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