Chemical Engineering :: Polymer Technology
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Polystyrene is a light, transparent, thermoplastic material used for making
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Cation exchange resins (0.3 to 1 mm size) used in water treatment is prepared from __________ resins.
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Valcunisation of rubber decreases its
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Plastic articles are normally produced by __________ moulding.
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Thermocole (expanded polystyrene) is not used for
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Linear polymers are normally
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Alkyd resin can not be used for making
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Pick out the wrong statement.
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Which of the following is not a thermoplastic material ?
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A.
Denier is defined as weight in gm of 9000 metres length of a fibre, while tex is defined as weight in gm of 1000 metres length of fibre.
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B.
Crimp is a measure of the difference between the length of the straightened and unstraightend fibre.
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C.
Dacron fibres, acrylic fibres, viscose rayon fibres & cellulose acetate fibres are all prepared by wet spinning.
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D.
Nylon fibres have greater water absorption capacity than polyester fibres.
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