le matieres plastiques Flashcards

1
Q

def

A

materiau obtenu par polymérisation d’un monomère

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2
Q

mode de polymerisation

A

polyaddition, monomères s’additionnent entre eux

Polycondensation monomères s’additionnent mais injection de molécules à chaque nouvelle liaison

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3
Q

polyaddition

A

matériaux thermoplastique (elasticité aug ac la T° ) et ac refroidissement reprend sa forme

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4
Q

polycondensation

A

materiaux dont plasticite dim ac T° transfo irreversible= thermodurcissable

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5
Q

transfo matiere (thermoplastique )

A

formage, extrusion , calandrage

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