Rare-earth-contained thermos flask blank material
A thermos bottle and bottle preform technology, applied in the field of glass materials, can solve the problems of not being able to adapt to the boiling water environment for a long time, low mechanical strength, and poor thermal stability, etc., and achieve the effect of promoting clarification, improving the bubble environment, and shortening the sintering time.
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[0028] A rare earth-containing thermos preform material, which is composed of the following raw materials in parts by weight (kg):
[0029] Silica powder 80, dolomite 30, potassium feldspar 15, magnesia 6, calcium oxide 3, zirconia 4, alumina 2, lanthanum carbonate 0.1, boron oxide 0.5, premix 20, compound clarification aid 1;
[0030] Described premix is made up of the raw material of following weight portion:
[0031] Marble 70, lepidolite 15, talcum powder 2, boric acid 6, sodium oxide 10;
[0032] The preparation method of described premix comprises the following steps:
[0033] Mix the above-mentioned raw material components into a glass melting furnace, melt at a high temperature of 1680°C for 2 hours, and then lower it to 1450°C for clarification for 1 hour to obtain a premix;
[0034] Described composite clarification aid is made up of the following raw materials of weight part:
[0035] Fly ash 30, sodium carbonate 14, bone char 1, barium nitrate 4, 60% sulfuric ...
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