Polymer Technology Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to Increase its viscosity Reduce the time of vulcanisation and quantity of vulcanising agent Reduce its viscosity to permit easier processing Protect rubber goods from attack by oxygen & ozone present in the atmosphere Increase its viscosity Reduce the time of vulcanisation and quantity of vulcanising agent Reduce its viscosity to permit easier processing Protect rubber goods from attack by oxygen & ozone present in the atmosphere ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polyesters are manufactured by the polycondensation reaction of A single monomer Carboxylic acid with ethylene Inorganic acid with ethylene glycol Dibasic acid with dihydric alcohol A single monomer Carboxylic acid with ethylene Inorganic acid with ethylene glycol Dibasic acid with dihydric alcohol ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polycondensation reaction of polymerisation Produces only thermoplastic material Does not need any catalyst Produces epoxy polymers Does not produce linear polymers Produces only thermoplastic material Does not need any catalyst Produces epoxy polymers Does not produce linear polymers ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology __________ resins are produced by the condensation polymerisation of formaldehyde with urea or melamine. Alkyd Epoxy Phenolic Amino Alkyd Epoxy Phenolic Amino ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Fillers such as zinc oxide and carbon black are added to the crude natural rubber before vulcanisation in order to improve its Weathering characteristics Elasticity Strength Plasticity Weathering characteristics Elasticity Strength Plasticity ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology The monomer for the production of neoprene rubber is Chloroprene Isoprene Acetylene None of these Chloroprene Isoprene Acetylene None of these ANSWER DOWNLOAD EXAMIANS APP
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