Rigid polyurethane composite material is divided into two components: isocyanate and polyether: commonly known as black and white. The rigid polyurethane foam with closed-cell structure is an ideal inorganic material for high temperature insulation. It has low thermal conductivity, energy-saving, shock-proof and strong compliance. It can be pre-fabricated or sprayed on-site pouring moulding. It is widely used in refineries, chemical plants, ethylene chemical industry, cold storage, single refrigeration and air-conditioning, etc. Refrigerator and construction industry heat preservation and insulation. With the implementation of energy-saving construction, polyurethane foam insulation system has been widely used in the field of thermal insulation because of its good thermal insulation function, rapid construction and reliable function. Storage and Safe Operation of Polyurethane Composite Polyether and Isocyanate

1. Storage of isocyanate (commonly known as black material) and composite polyether (commonly known as white material) must be in a sealed container to isolate air and avoid moisture absorption. Isocyanate and composite polyether barrels should not be exposed to sunlight, they must be far away from heat sources and placed in cool and dry places. If the barrel is placed upright, the barrel cover should not accumulate water. If the whole barrel material can not be used up at once, the barrel cover must be tightened immediately after each use to avoid water vapor and impurities entering the barrel and affecting the quality.

If two or more brands are used to combine polyethers, they should be stacked separately and clearly marked. The storage time of the combined polyether with common flame retardant should not be too long. It must be used on the same day when it is prepared, otherwise it will easily degenerate and affect the foaming quality. The recent sales trend of polyurethane direct-buried insulating pipes has appeared in the market with the beginning of various types of direct-buried insulating pipes. The innovation of such a technology still plays a very important role. How to show this applicability? The key lies in the social and economic benefits, because different thermal insulation effects can be better displayed in this process. Therefore, as an ineffective measure in the process of heating and energy saving, entering the market at present, gradually on such heating pipeline also has a new end point.

The recent sales trend of polyurethane direct-buried insulating pipes is aimed at the disadvantage of direct-buried insulating pipes. Secondly, the demand innovation is needed. Better performance, quality and related disadvantage conditions are stopped from time to time. In this way, in the process of application, it can play a better effect, and it is also a kind of information that is gradually recognized in the Chinese market. Better let directly buried insulation pipe into many construction industries, then such a technology or need to be improved and carried out from time to time, better performance of such use.