Efficient thermal insulation cellucotton felt and production method thereof
A technology of fiber cotton and heat insulation, applied in heat exchange equipment, mechanical equipment, and pipelines through heat insulation, can solve the problems of poor plasticity, high thermal conductivity of high-temperature insulation materials, low thermal conductivity, etc., to reduce gas convection and heat radiation, reducing the size of pores, reducing the effect of thermal conductivity
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Embodiment 1
[0039] The preparation method of high-efficiency heat-insulating fiber felt is prepared by sequentially acid-treating, sintering, beating, and wet-molding ultra-fine glass fiber wool prepared by flame-blowing method, wherein the average diameter of single filament of ultra-fine glass fiber wool The acid used in the acid treatment is sulfuric acid, the mass concentration of the acid used is 10%, the acid treatment temperature is 90°C, the acid treatment time is 8h, and the acid treatment is stirred at 30 rpm. Ultrafine glass fiber cotton includes 10 parts of alkali-free glass fiber cotton, 20 parts of medium-alkali glass fiber cotton, 15 parts of high-alkali glass fiber cotton, 15 parts of basalt fiber cotton, 20 parts of ternary high-silica glass fiber cotton, 20 parts of silica glass fiber raw cotton, said parts are parts by mass.
[0040] After the above-mentioned acid treatment and before sintering, wash the superfine glass fiber cotton with distilled water to neutrality, t...
Embodiment 2
[0045] The preparation method of high-efficiency heat-insulating fiber felt is prepared by sequentially acid-treating, sintering, beating, and wet-molding ultra-fine glass fiber wool prepared by flame-blowing method, wherein the average diameter of single filament of ultra-fine glass fiber wool The acid used in the acid treatment is hydrochloric acid, the mass concentration of the acid used is 6%, the acid treatment temperature is 70°C, the acid treatment time is 3h, and the acid treatment is stirred at 25 rpm. Ultrafine glass fiber cotton includes 5 parts of alkali-free glass fiber cotton, 25 parts of medium-alkali glass fiber cotton, 15 parts of high-alkali glass fiber cotton, 30 parts of basalt fiber cotton, 15 parts of ternary high-silica glass fiber cotton, 10 parts of silica glass fiber raw cotton, said parts are parts by mass.
[0046] After the above-mentioned acid treatment, before sintering, wash the superfine glass fiber cotton with distilled water to neutrality, th...
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