Silicate inorganic aqueous binder

Abstract

The invention discloses a silicate inorganic aqueous binder. The silicate inorganic aqueous binder is obtained by mixing 32-42 mass parts of liquid sodium silicate, 5-13 mass parts of liquid potassium silicate, 5-7 mass parts of silica sol, 2-3 mass parts of deionized water, 5-9 mass parts of liquid lithium silicate, and 5-8 mass parts of an inorganic acid. The inorganic acid is a phosphoric acid solution having the content of 10% or a formic acid solution having the content of 10%. The silicate inorganic aqueous binder is environmentally friendly, non-combustible and non-toxic. The silicate inorganic aqueous binder has optimized and improved water resistance, stability and endurance.

Description

technical field [0001] The invention relates to a silicate-based inorganic water-based adhesive, in particular to a silicate-based environment-friendly inorganic water-based adhesive with non-toxic and non-combustible properties. Background technique [0002] Generally speaking, adhesives made from inorganic silicates are water-based and environmentally friendly. The adhesive has a cost advantage due to low raw materials used, but has disadvantages such as poor water resistance and weak flexibility. For a long time, the application range of the adhesive is limited to cement composition, mortar, ceramics and other fields. [0003] In the field of industrial adhesives, adhesives made by diluting and modifying petrochemical resins and water into emulsified forms have always occupied a dominant position. However, in the manufacturing process of the above-mentioned petrochemical resin binder, in order to promote the evaporation of the solvent, it needs to be heated under relati...

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Problems solved by technology

This not only requires high investment in production equipment, but also causes environmental pollution, and cannot fundamentally solve the problem, so it is difficult to implement mass production

[0005] At present, the problems existing in the patented products of inorganic adhesives are: (1) The drying and hardening of the adhesive is slow, and the initial water resistance is poor

(3) Most petrochemical adhesives are two-component and two-component. The two-component adhesive mixed in the actual on-site operation should be used up as soon as possible due to the short time of hardening, which will not only cause waste, but also be discarded. It is also troublesome to deal with

The disadvantage of this is that a considerable amount of precipitated coagulation (that is, the coagulation produced in the water-based emulsified polymer) will be produced in the adhesive, which will make the stability and storage of the adhesive unsatisfactory, and at the same time lose its non-combustible performance and prevent fires. Emissions of harmful gases occur when

[0006] Sodium fluorosilicate or calcium fluoride can be used as a water-resistant enhancer in existing patents, and its efficacy is also described in relevant literature, but this substance is not easy to dissolve in silicate mixtures, and its use effect is not good And the price is relatively high, it is not suitable for mass production at this level

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