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Physical Properties and Flame-Retardant Effects of Polyurethane Coatings Containing Pyrophosphoric Lactone Modified Polyesters  

정동진 (명지대학교 공과대학 화학공학과)
김성래 (명지대학교 공과대학 화학공학과)
박형진 (명지대학교 공과대학 화학공학과)
박홍수 (명지대학교 공과대학 화학공학과)
김승진 (한국건자재시험연구원)
Publication Information
Polymer(Korea) / v.27, no.3, 2003 , pp. 169-175 More about this Journal
Abstract
Pyrophosphoric lactone modified polyester (PATT) containing two phosphorous functional groups in one unit structure was synthesized to prepare a non-toxic reactive flame-retardant coatings. Then the PATT was cured at room temperature with isocyanate, toluene diisocyanate-isocyanurate , to get a two-component polyurethane flame-retardant coatings (PIPUC). Comparing physical properties of the films of PIPUC with those of film of non-flame-retardant coatings, there was no deterioration observed in physical properties by the introduction of a flame-retarding component into the resin. We found that the char lengths measured by 45$^{\circ}$ Meckel burner method were 3.1∼4.4 cm and LOI values recorded 27∼30%. These results indicate that the coating prepared in this study is a good flame-retardant. The surface structure of coatings investigated with SEM does not show any defects and phase separation.
Keywords
non-toxicity; reactive type; polyurethane coatings; fame retardancy;
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