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Article: Flame and smoke suppressants for PVC.
- Article from:
- British Plastics & Rubber
- Article date:
- June 1, 1996
- Author:
CopyrightCOPYRIGHT 1996 Euro Publishing Consultancy. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Antimony trioxide has been used as a flame retardant in flexible PVC cable sheathing for many years, but has drawbacks in its acid gas evolution and high smoke levels. Mandy J Herbert of Alcan Chemicals describes investigations into flame retardant and smoke suppressant fillers based on antimony, molybdenum, zinc, boron, tin and aluminium compounds.
Flexible PVC has been the material of choice for cable sheathing for many years(1). It has excellent mechanical and electrical properties, and as the most polar of the commodity thermoplastics it tolerates a wide range of additives. Flame retardant PVC traditionally includes additives such as antimony trioxide, and flame ...