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A thermoplastic material has a linear polymer chain while a thermosetting plastic has a crosslinked polymer chain.
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.
Polymer A, also available as copolymer with trifluoroethylene, is a crystalline polymer with a melting point greater than 160 ᵒC and is used in coatings and insulation materials. What is the name of polymer A?
A glass reinforced polymer composite comprises of 35 volume % glass fiber and 65 volume % of polymer resin. The elastic moduli of glass and polymer resin are respectively 70 GPa and 3 GPa. The elastic modulus of the composite (in GPa) under iso-strain state is
Which of the following polymer is NOT a thermoplastic?
Which of the following is not an example of a thermoplastic polymer?
Terylene is a thermoplastic polymer prepared from addition polymerisation.
Fiber mixing is possible only if the thermoplastic polymer is available in the filamentary form.
Supramolecular polymer fullerenes are of various kinds depending upon their method of production. Which among the following is not a type of supramolecular polymer?
In case of dry spinning of polymers, the polymer solution in a volatile solvent is forced through the spinnerates into a warm air chamber, where the solvent evaporates leaving behind the polymer in the filament form. Dry spinning is used for __________ fibres.