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UNPLASTICIZED PVC [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2002-07-08

English

Subject field(s)
  • Plastic Materials
DEF

Polyvinyl chloride without any plasticizer.

OBS

Ingredients added to polyvinyl chloride, such as stabilizers, lubricants, etc. are not considered as plasticizers in the usual technical sense.

OBS

"Unplasticized polyvinyl chloride" is standardized by ISO.

OBS

See record for "rigid PVC".

Key term(s)
  • unplasticized PVC

French

Domaine(s)
  • Matières plastiques
CONT

Le PVC est une matière rigide sans plastifiant, alors que si l'on ajoute celui-ci, il devient flexible, semblable au caoutchouc. [...] Le PVC non plastifié ou à peine plastifié peut être utilisé dans le moulage par réjection, l'extrusion, l'extrusion-soufflage, la pression directe, le calandrage.

CONT

Le PVC rigide (non plastifié) est surtout utilisé pour la fabrication de plaques et de feuilles, de bouteilles (vin, eau minérale), de tuyaux, de volets, de fenêtres, etc.

OBS

Le terme «polychlorure de vinyle non plastifié» est normalisé par l'ISO.

Spanish

Campo(s) temático(s)
  • Materiales plásticos
Save record 1

Record 2 1997-11-17

English

Subject field(s)
  • Plastics Manufacturing
CONT

Unplasticized PVC presents some processing difficulties due to its high melt viscosity; in addition, the finished product is too brittle for some applications. To overcome these problems and to produce toughening, certain polymeric additives are usually added to the PVC. These materials, known as impact modifiers, are generally semicompatible and often somewhat rubbery in nature. Among the most important impact modifiers in use today are butadiene-acrylonitrile copolymers(nitrile rubber), acrylonitrile-butadiene-styrene(ABS) graft terpolymers, methacrylate-butadiene-styrene(MBS) terpolymers, chlorinated polyethylene, and some polyacrylates.

CONT

The advantage of the [stretch blow molding] process is an improvement in resin performance, such as bottle impact strength, cold strength, transparency, surface gloss, stiffness, and gas barrier, which permit lighter weight, lower cost bottles, use of lower cost resins with less impact modifiers, or products packaged that normally would not be suitable.

French

Domaine(s)
  • Plasturgie
CONT

Les antichocs sont des polymères (PE chloré) et surtout copolymères du type ABS ou MBS (méthacrylate-butadiène, styrène) qui forment des systèmes multiphases avec le polymère à renforcer et améliorent de ce fait sa résistance au choc. On les utilise en concentration de quelques pour cents, en particulier dans le PVC.

Spanish

Campo(s) temático(s)
  • Fabricación de plásticos
Save record 2

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