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Preparation and Properties of Flame-Retardant Polyurethane Pressure Sensitive Adhesive and Its Application

期刊

JOURNAL OF COMPOSITES SCIENCE
卷 7, 期 2, 页码 -

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MDPI
DOI: 10.3390/jcs7020085

关键词

polyurethane; reactive flame-retardant; pressur sensitive adhesive; peel strength; bond strength

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Using DOPO-HQ, FRC-6, and DOPO-SF as flame retardants, FRPU-PSA was prepared and characterized using FTIR, TG, LOI, UL 94, 180 degrees peeling, and inclined ball rolling. The LOI of PU/50mol%DOPO-HQ, PU/50mol%FRC-6, and PU/20wt%DOPO-SF were 30.7%, 29.3%, and 25.0% respectively, and the peel strength of PU/50mol%DOPO-HQ and PU/50mol%FRC-6 were 3.88N/25 mm and 3.42N/25 mm respectively. FRPU-PSA exhibited good bond strength and flame retardant performance.
Using 10-(2,5-dihydroxyphenyl)-10-hydrogen-9-oxo-10-phosphine-10-oxide (DOPO-H Q), N,N-diethyl-bis(hydroxyethyl) aminomethylene phosphate diethyl (FRC-6), and (6-oxo- 6H-dibenzo[c,e][1,2]oxphosphine-6-yl) hydroxylmethyl-thiophene (DOPO-SF) as reactive flame retardants, the flame-retardant polyurethane pressure sensitive adhesive (FRPU-PSA) were prepared. The fourier transform infrared (FTIR), thermogravimetric analysis (TG), limiting oxygen index (LOI), vertical combustion (UL 94), 180 degrees peeling, and inclined ball rolling were used to characterize and investigate the properties of FRPU-PSA. It was found that the LOI of PU/50mol%DOPO-HQ, PU/50mol%FRC-6, and PU/20wt%DOPO-SF were 30.7%, 29.3%, and 25.0%, respectively, the peel strength of PU/50mol%DOPO-HQ and PU/50mol%FRC-6 were 3.88N/25 mm and 3.42N/25 mm, respectively. FRPU-PSA not only had good bond strength, but also had good flame retardant performance.

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