Polymer Technology

______________ resins are produced by the condensation polymerisation of formaldehyde with urea or melamine?

Byadmin March 7, 2019August 25, 2021

______________ resins are produced by the condensation polymerisation of formaldehyde with urea or melamine?

A. Epoxy
B. Amino
C. Alkyd
D. Phenolic

Polymer Technology

SBR is produced by the copolymerisation of butadiene & styrene by employing emulsion polymerisation. The weight ratio of styrene and butadiene is maintained at_________________?

SBR is produced by the copolymerisation of butadiene & styrene by employing emulsion polymerisation. The weight ratio of styrene and butadiene is maintained at_________________?

A. 1: 3
B. 3 : 1
C. 1 : 2
D. 2 : 1

Read More SBR is produced by the copolymerisation of butadiene & styrene by employing emulsion polymerisation. The weight ratio of styrene and butadiene is maintained at_________________?
Polymer Technology

Cellulose is the main constituent of most ______________ fibres?

Cellulose is the main constituent of most ______________ fibres?

A. Acrylic
B. Spandex
C. Synthetic
D. Natural

Read More Cellulose is the main constituent of most ______________ fibres?
Polymer Technology

Main constituent of natural rubber is_________________?

Main constituent of natural rubber is_________________?

A. Polystyrene
B. Polyisoprene
C. Polybutadiene
D. Poly chloroprene

Read More Main constituent of natural rubber is_________________?
Polymer Technology

Celluloid is__________________?

Celluloid is__________________?

A. Cellulose acetate
B. Regenerated cellulose
C. Cellulose nitrate
D. Cellulose acetate butyrate

Read More Celluloid is__________________?
Polymer Technology

Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is__________________?

Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is__________________?

A. 7 kgf/cm2 and 70 °C
B. 1000 kgf/cm2 and 100°C
C. 7 kgf/cm2 and 700°C
D. 1 kgf/cm2 (gage) and 70°C

Read More Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is__________________?
Polymer Technology

Acrylonitrile-butadiene-styrene (ABS) copolymer, which is produced by blending styreneacrylonitrile copolymer with butadiene based elastomer, is a/an__________________?

Acrylonitrile-butadiene-styrene (ABS) copolymer, which is produced by blending styreneacrylonitrile copolymer with butadiene based elastomer, is a/an__________________?

A. Rigid foam
B. Engineering plastic
C. Thermosetting polymer
D. Spongy rubber

Read More Acrylonitrile-butadiene-styrene (ABS) copolymer, which is produced by blending styreneacrylonitrile copolymer with butadiene based elastomer, is a/an__________________?