Phosphoric acid ester compound was used as thermal resistant and flame retardant for chlorinated polyethylene (CPE) rubbery material which is using to prepare automotive hose. Cure characteristics, physical properties, thermal resistance and flame retardation of CPE compounded rubber were investigated. CPE rubbery material which has more excellent properties of cold resistance, chemical-corrosion resistance and inexpensive than existing ethyleneacrylate rubber (EAR) is used to prepare compounded rubbery material for hose. A non-halogen flame retarding agent diphenylbutylamido phosphate (DPBAP), which is condensed phosphoric ester, was synthesized and it was mixed to CPE rubbery material within the range of 0~30 phr. From the test results of fundamental properties, rheological properties, heat resistance and flame retardation of CPE compounded rubber specimens were found out to be much increased. The optimum mixing ratio of DPBAP to rubber which gives maximum effect on thermal resistance and flame retardation, within the range of desirable specification for rubbery material, was turned out to be 25 phr.

자동차 부품용 호스를 제조할 때 사용되는 고무재료의 내열 및 난연성을 향상시키기 위하여 인산 에스테르계 화합물을 내열 및 난연제로 하여 제조한 염소화 폴리에틸렌(CPE) 배합고무의 가황 특성, 물리적 성질, 내열성, 난연성 및 변량효과를 조사하였다. 호스용 고무재료는 기존의 Ethyleneacrylate rubber (EAR)보다 화학적 내식성과 내한성이 우수하면서도 가격이 저렴한 CPE 고무재료를 사용하였으며, 난연제는 비할로겐 축합 인산 에스테르계인 Diphenylbutylamido phosphate (DPBAP)를 합성하여 CPE 고무재료와 0~30 phr 범위에서 흔련하였다. 배합고무 시편의 기본 물성을 측정한 결과, CPE 배합고무의 유동성, 난연성, 내열성이 향상되었음을 확인하였으며, 고무재료규격을 초과하지 않는 범위 내에서 최대의 내열 및 난연 효과를 주는 DPBAP의 배합량은 25 hpr로 나타났다.