A Method for Predicting the Service Life of Vacuum Insulation Panels (zkb)

Abstract

The invention discloses a method for predicting the service life of a vacuum insulation panel (ZKB), comprising the following steps of measuring the initial vacuum degree p of the vacuum insulation panel (ZKB) 初始 , to test the air pressure difference Δp on both sides of the high barrier film 检测 , per unit area, per unit time gas permeation φ of high barrier membrane 检测 , test the volume v of the vacuum insulation function part of the vacuum insulation panel (ZKB), and the area S of the insulation building material, and substitute the above measured data into the following calculation formula, The service life of the thermal insulation building material is obtained, and the prediction method disclosed in the invention can quickly and accurately predict the service life of the thermal insulation building material for evaluating its durability.

Description

technical field [0001] The invention relates to the emerging field of vacuum insulation panels (ZKB), in particular to a method for predicting the service life of vacuum insulation panels (ZKB). Background technique [0002] Traditional building insulation materials have gradually faded out of the building insulation building materials market due to their disadvantages such as poor insulation effect, poor fire resistance, and the use of core materials that damage the ecological environment. In recent years, a new type of thermal insulation building material made of vacuum insulation principle has been more and more recognized by the market for its excellent thermal insulation effect, small installation volume and environmental friendliness. [0003] Vacuum insulation board (ZKB) uses the principle of vacuum insulation to dry the core material with a relatively thin thickness and extremely low thermal conductivity, and then encapsulate it with a high barrier film, degas and h...

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Problems solved by technology

[0004] For the service life of vacuum insulation panels (ZKB), if the method of actual measurement requires years of test cycles, this method of measurement is not feasible in terms of time. How to determine the service life of different vacuum insulation panels (ZKB) has become a production Manufacturers urgently need to solve the problem

In addition, to predict the service life of thermal insulation building materials, it is necessary to measure the initial vacuum degree in the high barrier film bag of thermal insulation building materials. It is not easy to measure the initial vacuum degree under the current technical conditions. If the destructive test on the formed vacuum thermal insulation building materials is passed, And the initial pressure data in the high barrier film bag obtained indirectly by calculation has a large systematic error

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