Air cushion heat insulation anti-convection layer and preparation method thereof

Abstract

The invention discloses an air cushion heat insulation anti-convection layer. The air cushion heat insulation anti-convection layer comprises an aluminum foil reflecting layer I, a polyethylene bubble film layer I, a polyethylene bubble film layer II, a polyethylene bubble film layer III and an aluminum foil reflecting layer II from inside to outside, wherein the aluminum foil reflecting layer I or the aluminum foil reflecting layer II comprises aluminum foil, a polyethylene glycol terephthalate film and a chlorinated polyethylene film, from outside to inside, the aluminum foil is arranged on the outermost layer, the polyethylene glycol terephthalate film is arranged on the second layer, and the chlorinated polyethylene film is arranged on the innermost layer. The air cushion heat insulation anti-convection layer is good in moisture resistance, water resistance and impact resistance and long in service life, when heat is in contact with the aluminum foil reflecting layers, due to the high reflectivity, small heat radiation absorption and little heat transmitted by a middle air layer, conduction, radiation and convection heat dissipation of a heat supply network pipeline can be effectively achieved, and a very good heat insulation effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of thermal insulation of steam heat pipes, and in particular relates to an air cushion heat-insulating counterflow layer and a preparation method thereof. Background technique [0002] At present, the thermal insulation materials used in the domestic heating network industry generally have problems such as poor heat insulation and thermal insulation performance, and short service life. According to calculations, the transmission efficiency of my country's heating network is only about 67%, which is far from the national energy-saving standard of 90%. , the pipe network transmission efficiency is low. The heat loss of the heating network is mainly caused by inadequate thermal insulation engineering measures. If thermal insulation measures are taken for thermal equipment and thermal pipelines, the heat loss can be reduced by 80% to 90%. On the contrary, if the pipeline is not insulated, the fluid will continue...

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Problems solved by technology

[0004] The invention provides an air-cushion heat-insulating anti-draft layer and a preparation method thereof, in order to solve the problem that the air-cushion heat-insulation anti-draft layer in the prior art has no obvious thermal insulation effect, unsatisfactory impact resistance, waterproof, and unsatisfactory service life, imperfect technological process and inconvenient construction. The problem

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