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Polymer Technology

Polymer Technology
Main constituent of natural rubber is

Polyisoprene
Polybutadiene
Poly chloroprene
Polystyrene

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Polymer Technology
Polyurathane can not be used to make

Fibre reinforced plastic (FRP)
Automobile cushion
Thermal insulation in refrigerator
Coating and adhesive

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Polymer Technology
Melt spinning of polymers involves the forcing of polymer melt through spinnerettes (fine holes) into an atmosphere kept at a temperature lower than the melting point of the polymer, which causes the fine diameter polymer melt to harden into filaments. Melt spinning is not used in case of the __________ fibres.

Nylon 6:6
Polypropylene
Polyester
Acrylic

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Polymer Technology
Valcunisation of rubber decreases its

Tackiness
Resistance to organic solvents
Tensile strength
Working temperature range

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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

Bakelite
Nylon-66
Polyester
Teflon

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Polymer Technology
Acrylonitrile-butadiene-styrene (ABS) copolymer, which is produced by blending styrene-acrylonitfile copolymer with butadiene based elastomer, is a/an

Engineering plastic
Spongy rubber
Thermosetting polymer
Rigid foam

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