인 함유 벤조산 변성폴리에스테르의 합성과 이를 이용한 PU 난연도료의 도막물성 연구

• 영문명: Synthesis of Benzoic Acid Modified Polyester Containing Phosphorus and Their Application to PU Flame-Retardant Coatings
• 발행기관: 한국응용과학기술학회 (구.한국유화학회)
• 저자명: 박홍수(Park HongSoo) 심일우(Shim IlWoo) 조혜진(Jo HyeJin) 유혁재(You HyukJae) 김명수(Kim MyungSoo) 함현식(Hahm HyunSik)
• 간행물 정보: 『한국응용과학기술학회지』한국유화학회지 제22권 제2호, 123~135쪽, 전체 13쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 2005.06.30

영문 초록

Reaction intermediates PCP/BZA (PBI) and tetramethylene bis(orthophosphate)(TBOP) were synthesized from polycaprolactone (PCP) and benzoic acid (BZA) and from pyrophosphoric acid and 1,4-butanediol, respectively. Benzoic acid modified polyesters containing phosphorus (APTB-S, -10, -15) were synthesized by polycondensation of the prepared PBI (containing 5, 10, 15wt% of benzoic acid), TBOP, adipic acid, and 1,4-butanediol. Network structured PU flame-retardant coatings (APHD) were prepared by curing the synthesized benzoic acid modified polyesters containing phosphorus (APT B - 5 , -10, -15) with hexamethylene diisocyanate (HDI)-timer. From the TGA analysis of APTBs, it was found that the afterglow decreased with the amount of BZA content at the high temperatures. With the introduction of BZA, the film viscosity and film hardness of APHD decreased. With the introduction of caprolactone group, the flexibility, impact resistance, accelerated weathering resistance of APTBs increased. Flame retardancy of the coatings was tested. In a vertical burning method, APHD shows 210~313 seconds, which indicates that the coatings are good flame-retardant coatings. Moreover, the amount of afterglow and flame retardancy of the coatings are decreased with increasing BZA content.

키워드

polycaprolactone benzoic acid HDI trimer modified polyester phosphorus flame retardancy