An Intumescent-Like Flame-Retardant Effect of Hollow Carbon Precursor on Acrylonitrile–Butadiene–Styrene/Oligomeric Aryl Phosphate/Novolac Epoxy Composites. (21st September 2016)

• Record Type: Journal Article
• Authors: Guo, Zibin; Wang, Chengle; Li, Juan
• Is Part Of: Polymer-plastics technology and engineering. Volume 55:Number 14(2016)
• Page Start: 1441
• Page End: 1449
• Publication Date: 2016-09-21
• Subjects: Charring -- degradation -- flame retardant -- hollow phenolic spheres -- intumescent-like; Polymers -- Periodicals; Polymerization -- Periodicals; Polymers -- Periodicals; Engineering -- Periodicals; Plastics -- Periodicals; 668.9
• DOI: 10.1080/03602559.2016.1163605
• Languages: English
• ISSNs: 0360-2559

Abstract

ABSTRACT: An intumescent-like char layer was formed by introducing hollow phenolic microspheres into acrylonitrile–butadiene–styrene/oligomeric aryl phosphate/novolac epoxy resin. Acrylonitrile–butadiene–styrene-grafted maleic anhydride was used to improve their compatibility. Combustion and thermal degradation behaviors were studied. The results showed that the ABS composites containing 25 wt% oligomeric aryl phosphate/novolac epoxy (3/2) obtains a limiting oxygen index as high as 50; however, it cannot be classified in the UL-94 test. Combination of oligomeric aryl phosphate/novolac epoxy, acrylonitrile–butadiene–styrene-grafted maleic anhydride, and hollow phenolic microspheres (23/10/2) improves the UL-94 grade of acrylonitrile–butadiene–styrene composites to V-1. A continuous and compact porous intumescent-like char layer is generated during combustion; thus, better flame retardancy is obtained. GRAPHICAL ABSTRACT: