Polymer Technology Mastication of rubber means A treatment to retard its deterioration due to oxidation Its softening Improving its curing rate Depression of its freezing point A treatment to retard its deterioration due to oxidation Its softening Improving its curing rate Depression of its freezing point ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to Protect rubber goods from attack by oxygen & ozone present in the atmosphere Reduce its viscosity to permit easier processing Reduce the time of vulcanisation and quantity of vulcanising agent Increase its viscosity Protect rubber goods from attack by oxygen & ozone present in the atmosphere Reduce its viscosity to permit easier processing Reduce the time of vulcanisation and quantity of vulcanising agent Increase its viscosity ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Poly tetra flouro ethylene (PTFE) is known as Bakelite Celluloid Teflon Dacron Bakelite Celluloid Teflon Dacron ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Out of all the elastomers, natural rubber has the longest elongation range & flexibility of the order of __________ percent. 1000-1500 2000-2500 1500-2000 1-1000 1000-1500 2000-2500 1500-2000 1-1000 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 Nylon-66 Polyester Teflon Bakelite Nylon-66 Polyester Teflon Bakelite ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Addition of plasticisers to polymers results in partial neutralisation of intermolecular forces of attraction between the macro-molecules thereby increasing its Tensile strength Flexibility All of these Chemical resistance Tensile strength Flexibility All of these Chemical resistance ANSWER DOWNLOAD EXAMIANS APP
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