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Development of impact modified, flame retardant polybutylene terephthalate formulations
Author(s) -
Smith Bonnie V.,
Wiseman Donald K.,
Crook Evan H.
Publication year - 1995
Publication title -
journal of vinyl and additive technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 1083-5601
DOI - 10.1002/vnl.730010113.n
Subject(s) - polybutylene terephthalate , fire retardant , materials science , flammability , acrylate , composite material , izod impact strength test , epoxy , polymer chemistry , copolymer , polymer , polyester , ultimate tensile strength
The effect of melt blending core‐shell impact modifiers (EXL‐3330, acrylic, and EXL‐3647 MBS) and flame retardants (polypentabromobenzyl acrylate—FR‐1025 and 40–60,000 molecular weight brominated epoxy resin—F‐2400) on the physical properties of PBT (polybutylene terephthalate) was determined using antimony oxide as a flame retardant synergist and Teflon 60 as an anti‐drip agent. The major objectives of the study were to develop formulations having maximum impact strength while maintaining a V‐0 UL‐94 flammability rating. Excellent impact strength and flammability performance were achieved in the modified FR‐PBT systems at 20% impact modifier concentration, 13.5% and 12% F‐2400 and FR‐1025 concentrations, respectively, a 3/1 FR/AO ratio and 1% Teflon 60 concentration.