Method for producing vacuum heat insulation board from expanded perlite
A technology of expanded perlite and vacuum insulation panels, applied in heat exchange equipment, pipeline protection through heat insulation, heat preservation, etc., can solve the problems of high material cost, high energy consumption, and non-environmental protection, and achieve low price and low thermal conductivity , The effect of reducing the cost of raw materials
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[0028] The invention discloses a method for producing a vacuum insulation panel by using expanded perlite. The core material is put into a high-barrier gas film bag and sealed after vacuuming. It is characterized in that the composition and parts by weight of the core material are: expanded pearl Rock 60-80, auxiliary material 10-20, fiber 8-12, vacuum active stabilizer 4-6, getter 1-2.
[0029] The manufacturing process includes the following steps:
[0030] (1) Ingredients: Put various materials of the formula into the mixer for full mixing;
[0031] (2) Drying: Dry the evenly stirred mixture, and control the drying temperature at 100-120°C. During the drying process, measure the moisture content of the mixture every 8 minutes until the moisture content of the mixture reaches 0.5 % below, stop drying;
[0032] (3) Non-woven fabric bag making: make non-woven fabric into three-side sealed bags, or make three-side sealed bags with gusseted corners;
[0033] (4) Filling of co...
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