CAJ | 학술논문

以绢云母和中间相炭微球(MCMB)作为混合阻燃剂,制备了水性膨胀型钢结构防火涂料,研究了MCMB对防火涂料耐火性能的影响.结果表明,MC-MB在防火涂料中有较好的分散性,在m (绢云母)∶m (MCMB)＝3∶1时制备的防火涂料受热后的炭质层为结构致密且分布均匀的密闭孔洞,炭质层与钢板的粘结性好且强度高,能够有效地阻止热量传递,从而降低钢板升温速率,提高防火性能,受热4200 s 后的钢板背面温度维持在205℃.
이견운모화중간상탄미구(MCMB)작위혼합조연제,제비료수성팽창형강결구방화도료,연구료MCMB대방화도료내화성능적영향.결과표명,MC-MB재방화도료중유교호적분산성,재m (견운모)∶m (MCMB)＝3∶1시제비적방화도료수열후적탄질층위결구치밀차분포균균적밀폐공동,탄질층여강판적점결성호차강도고,능구유효지조지열량전체,종이강저강판승온속솔,제고방화성능,수열4200 s 후적강판배면온도유지재205℃.
In this study,an waterborne flame-retardant coating was prepared with mesocarbon microbeads (MC-MB),and the effect of the MCMB on the fireproof coating has been discussed.The results indicated that:the fire-retardant coating composed of MCMB has better dispersion in water.When the ratio of sericite/MCMB was 3∶1,the char layer with compact and well-distributed pores was formed.At the same time,the char structure showed good adhesive properties and was tough enough to protect the steel structure ,which effectively preven-ted heat transfer and thus reduced steel heating rate,improved the fire performance.And the steel structure reached 205 ℃ at 4 200 s.