HEAT INSULATING COMPOSITION FOR LPG TANK AND CONSTRUCTION METHOD USING THEREOF

• Main Authors: EUM, SU HYUN, CHOI, SEUNG SEOK, YOON, KWANG PILL
• Format: Patent
• Language: English; Korean
• Published: 02.11.2015
• Subjects: BLASTING; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED,LIQUEFIED, OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; HEATING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; STORING OF DISTRIBUTING GASES OR LIQUIDS; TRANSPORTING; VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED ORSOLIDIFIED GASES; WEAPONS

The present invention relates to a heat insulating composition for an LPG tank, and a composite heat insulating layer construction method using the same. An objective of the present invention is to provide a heat insulating composition for an LPG tank and a composite heat insulating layer construction method using the same which copes with contraction and expansion of the LPF by having heat insulated, incombustible, and flexible properties at the same time by sequentially layering a first heat insulating layer having a heat insulating property; a second heat insulating layer having incombustible and heat insulating properties; and a third heat insulating layer having flexible, fire retardant, and heat insulating properties on an outer surface of the LPG tank. According to the present invention, the heating composition comprises: a composite heat insulating layer consisting of a first heat insulating layer having a heat insulating property on an outer surface of the LPG tank; a second heat insulating layer having heat insulating and incombustible properties; and a third heat insulating layer having flexibility, being fire retardant, and having heat insulating properties. The heat insulating layers comprises: a polyurethane heat insulating material; an incombustible heat insulating material wherein an inorganic fire retardant binder comprises 70-80 wt% of a mixed compound, 1-2 wt% of an inorganic phosphorus-based fire retardant compound, 18-28 wt% of water, and 0.5-2.0 wt% of an inorganic filler and vermiculite micropowder mixed with a weight ratio of 1.2-1.5:1; and a flexible heat insulating material wherein an elastic heat insulating material comprises 55-68 wt% of a fire retardant resin, 6-7 wt% of an organic binder, and 25-38 wt% of water and the vermiculite micropowder mixed with a weight ratio of 1-1.2:1. 본 발명은 LPG 탱크용 복합보온재 조성물과 이를 이용한 복합보온층 시공방법에 관한 것으로, 그 목적은 LPG 탱크 외부면에 보온성을 구비한 1차보온층, 불연성 및 보온성을 구비한 2차 보온층, 유연성과 난연성 및 보온성을 구비한 3차 보온층을 순차적으로 적층성형하여, 보온성, 불연성 및 유연성을 동시에 구비하도록 함으로써, LPG의 수축팽창에 대응할 수 있는 LPG 탱크용 복합보온재 조성물과 이를 이용한 복합보온층 시공방법을 제공하는 것이다. 본 발명은 폴리우레탄 보온재; 혼합화합물 70∼80wt%, 무기인계 난연화합물 1∼2wt%, 물 18∼28wt%, 무기충전제 0.5∼2.0wt% 을 포함하는 무기질 난연바인더와 질석 미분말이 1.2∼1.5 : 1 의 중량비로 배합된 불연성 보온재; 난연수지 55∼68wt%, 유기결합제 6∼7wt%, 물 25∼38wt% 로 이루어진 탄성보온재와 질석 미분말이 1∼1.2 : 1 의 중량비로 배합된 유연성 보온재;에 의해 LPG 탱크의 외부표면에 보온성을 구비한 1차보온층, 보온성과 불연성을 구비한 2차보온층, 난연성과 보온성 및 유연성을 구비한 3차보온층으로 이루어진 복합보온층을 형성하도록 되어 있다.