인과 염소 함유 변성폴리에스테르의 PU 난연도료에의 적용

• 영문명: Application of Modified Polyesters Containing Phosphorus/Chlorine to PU Flame-Retardant Coatings
• 발행기관: 한국응용과학기술학회 (구.한국유화학회)
• 저자명: 박홍수(Park HongSoo) 김송형(Kim SongHyoung) 홍석영(Hong SeokYoung) 유규열(Yoo GyuYeol) 안성환(Ahn SungHwan) 함현식(Hahm HyunSik) 김승진(Kim SeungJin) 김영근(Kim YoungGeun)
• 간행물 정보: 『한국응용과학기술학회지』한국유화학회지 제24권 제1호, 31~46쪽, 전체 16쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 2007.03.31

영문 초록

This study was focused on the maximization of flame-retardancy of polyesters by a synergism of simultaneously introduced chlorine and phosphorus into polymer chains of modified polyesters. To prepare modified polyesters, reaction intermediates, TD-adduct (prepared from trimethylolpropane/2,4-dichlorobenzoic acid (2,4-DCBA)) and TMBO (prepared from tetramethylene bis(orthophosphate)), were prepared first, then condensation polymerization of the prepared intermediates, adipic acid, and 1,4-butanediol were carried out. In the condensation polymerization, the content of phosphorus was fixed to be 2%, and the content of 2,4-DCBA that provides chlorine component was varied to be 10, 20, and 30wt%, and we designated the prepared modified polyesters containing chlorine and phosphorus as ABTT-10C, -20C, -30C. Two-component PU flame-retardant coatings (ABTTC, ABTTC-10C, ABTTC-20C, ABTTC-30C) were prepared by the curing of synthesized ABTTs with a curing agent of allophanate/trimer at room temperature. To examine the film properties of the prepared PU flame-retardant coatings, film specimens were prepared with the prepared coatings. The film properties of ABTTC, ABTTC-10C and ABTTC-20C, which contain 0, 10 and 20wt% 2,4-DCBA, respectively, were proved to be good, whereas the film properties of ABTTC-30C, which contains 30wt% 2,4-DCBA, was proved to be a little bit poor. Two kinds of flame retardancy tests, ^{circ}45Meckel burner method and LOI method were performed. With the ^{circ}45Meckel burner method, three flame-retardant coatings except ABTTC showed less than 3.4cm of char length, and showed less than 2 seconds of afterflaming and afterglow. From this result, the prepared flame-retardant coatings were proved to have the 1st grade flame retardancy. With the LOI method, the LOI values of the coatings containing more than 10wt% 2,4-DCBA were higher than 30%, which means that the coatings possess good flame retardancy. From these results, it was found that synergistic effect in flame retardancy was taken place by the introduced phosphorus and chlorine.

키워드

PU flame retardant coatings phosphorus chlorine modified polyesters