Abstract
AbstractUV curable acrylic PSAs (pressure‐sensitive adhesives) were modified with organic and inorganic flame retardants to improve flame retardancy of PSAs minimize the sacrifice of adhesion properties. The flame retardancy (UL‐94 test) of acrylic PSAs were enhanced by the addition of 5–30 wt % of an organic flame retardant such as TCEP (Tris(2‐chloroethyl)phosphate), PBPE (pentabromophenyl ether), and TBBPA(3,3′5,5′‐tetrabromobisphenol A). Especially, TBBPA is the best flame retardant for acrylic PSAs when it works alone. However, PSAs compounded with aluminum trihydroxide (Al(OH)3) showed a little reduction in burning time up to 30 wt %. An apparent synergic effect was observed only for an acrylic PSAs with a combination of TCEP and PBPE flame retardants. The addition of flame retardants brought a no significant effect on curing even in high amount. It was surmised that the miscibility between PSAs and flame retardant was closely related with flame retardancy and adhesion properties of acrylic PSAs. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
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