Thermal insulation core material and vacuum insulation panel and manufacturing process thereof

摘要

A thermal insulation core material and a vacuum insulation panel and a manufacturing process thereof are disclosed. The process for manufacturing a thermal insulation core material comprises: A) stirring and dispersing a mixture of glass fiber cotton and water to obtain a slurry; B) adding water and dilute sulfuric acid into the slurry to obtain a concentration of 0.1% and a pH value in a range of 2.5-3.0; C) removing residue from the slurry to obtain a qualified slurry, the residue comprising unmelted glass fibers; D) transporting the qualified slurry from a high-level tank to a head box, through which the qualified slurry flows onto a forming mesh where the qualified slurry is dehydrated to obtain a plate-shaped core material; E) transporting the plate-shaped core material into a vacuum box for compression and dehydration; and F) drying the plate-shaped core material.