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WorksheetsThermosetting Plastics, Particle Reinforced Composites Sans
Total questions: 19
Worksheet time: 10mins
Thermosetting plastics are formed by
addition polymerization
copolymerization
condensation polymerization
isomerism
Which of the following is a property of thermosetting plastics?
can be molded
soft
recyclable
can be used at high temperature
Which among these is an example of a commodity thermosetting plastic polymer material?
polyethylene
polypropylene
polystyrene
phenolic
Which of the following is not an example of a thermoplastic polymer?
urethane
melamine
epoxide
acetal
Phenolics are otherwise commonly known
bakelite
polyformaldehyde
urea formaldehyde
melamine formaldehyde
Polyformaldehyde has a good stability up to
50oC
100oC
150oC
250oC
Melamine formaldehyde can be used at temperatures up
65oC
95oC
150oC
240oC
Which plastic material does a combination of dibasic acids and polyhydric alcohols give?
polyester
polyurethane
epoxide
phenolic
A polymer having rubber-like properties is known
thermoset
thermoplastic
elastomer
polyisoprene
Which of the following is used as an adhesive?
epoxide
polyurethane
polyester
phenol formaldehyde
Paraplex is a common trade name for which thermoset?
epoxide
polyester
polyurethane
urea formaldehyde
Urea formaldehyde shares properties and applications with which other thermoset?
phenol formaldehyde
polyurethane
epoxide
melamine formaldehyde
Which of the following is a type of particle-reinforced composites?
continuous
laminates
dispersion-strength
sandwich panels
The below figure represents ______ type of composites.
fiber
particulate
laminar
flake
Cermet is a _______ composite
particle reinforced
fiber reinforced
structural
laminar
How much volume of carbon black is used in automobile tires?
2-3%
8-10%
15-30%
45-50%
High-temperature strength of nickel alloys can be enhanced using dispersed particles of
thorium
arsenic
brmide
antimony
SAP composite stands for ___ composite
strengthened aluminum powder
sintered aluminum powder
strengthened ammonium particulate
sintered aluminum particulate
Which of the following cermet materials is used for rocket motor and jet-engine parts?
tungsten carbide
molybdenum carbide
chromium oxide
titanium bromide
