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水介硅酸乙脂——一种稀缺和昂贵的产品,是熔模铸造制壳的主要粘结剂。现在用一种新的粘结材材——《Moncanto》和型的胶体二氧化硅,它按粘结剂《Syton》和《Ludox》六个牌号出产,含有15—50％的SiO_2。制出并使用了含29～30％SiO_2的o-30的粘结材料。国内(指苏联)工业上胶体氧化硅是用于制造催化剂和沸石吸附剂。使稀释到一升水中含有35—40克SiO_2的,模数为2.8—3.0的水玻璃通过阳离子交换树脂2。Na离子对H离子交换的结果,获得硅酸凝聚混合物,然后将这种混合物浓缩到规定的SiO_2浓度,SiO_2胶体颗粒的尺寸调正到60-180A°。
Silicasilicate, a rare and expensive product, is the main binder for investment casting shell. Now with a new binder material - “Moncanto” and type of colloidal silica, which is based on the binder “Syton” and “Ludox” six grades, containing 15-50% SiO 2. An o-30 adhesive material containing 29 to 30% SiO 2 was made and used. Domestic (referring to the Soviet Union) industrial colloidal silica is used in the manufacture of catalysts and zeolite adsorbents. Water glass having a modulo 2.8-3.0 containing 35-40 grams of SiO 2 diluted to one liter of water was passed through cation exchange resin 2. Na ions on the H ion exchange results, to obtain a silicic acid agglomeration mixture, and then the mixture was concentrated to a predetermined SiO 2 concentration, SiO 2 colloidal particle size adjusted to 60-180A °.