与我国不同,国外熔模精密铸造基本上不用水玻璃作粘结剂,硅溶胶主要用作配制面层涂料,生产中广泛用的粘结剂是硅酸乙酯水解液,特别是硅酸乙酯40。 在熔模精密铸造大量用于工业生产以来的四十年里,尽管粘结剂发生过多种变化,尽管在某些国家和地区,在某一段时期内也采用过其它粘结剂。例如水玻璃粘结剂曾经在苏联盛行过一段时期,在我国水玻璃粘结剂至今还占主导地位。但从世界范围来说,迄今硅酸乙酯水解液始终是最主要的粘结剂。 Different from our country, foreign investment casting basically do not use water glass as a binder, silica sol is mainly used for the preparation of surface coatings, the production of widely used binder is ethyl silicate hydrolyzate, especially ethyl silicate Ester 40. In the 40 years since investment casting was largely used in industrial production, many changes have been made to the binder, although other binders have been used for some time in some countries. For example, water glass binders used to be popular in the Soviet Union over a period of time, and the water glass binders still dominate in China. However, to date, ethyl silicate hydrolyzate has always been the most important binder.