Base material of inorganic coating and application of base material

A technology of base materials and inorganic coatings, applied in art coatings, coatings, etc., can solve the problems of easy aging of coatings, poor weather resistance, internal micropores, etc., and achieve pollution-free energy, strong weather resistance, and good compatibility Effect

Active Publication Date: 2014-04-16
FUKE TECH (SUZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, when silica sol is used alone, there are often fatal defects such as cracks and internal micropores in the film formed by curing at room temperature. At the same time, the price of silica sol is high, and its price has always been several times that of water glass, which is also much higher than the same concentration. Therefore, silica sol is usually used as an auxiliary agent at present, and organic-inorganic composite coatings are often prepared by adding organic polymer emulsions, and the coatings obtained by adding organic polymer materials are easy to age and have poor weather resistance
It has also been reported to use water-soluble melamine and polyols to modify silica sol, but this type of treatment will increase the complexity of preparation

Method used

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  • Base material of inorganic coating and application of base material
  • Base material of inorganic coating and application of base material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment one: a kind of base material of inorganic coating, described base material is the mixture of liquid silica sol and calcium carbonate, takes by weighing 100 grams of liquid silica sol (solid content is 30%), 100 grams of powder calcium carbonate respectively, Pour the silica sol into the speed-adjusting dispersion kettle, add calcium carbonate while stirring, and then stir at a high speed to disperse evenly.

[0030] figure 1 It is the XRD diffraction pattern of silica sol raw material, it is a kind of amorphous silicon dioxide; figure 2 It is the XRD diffraction pattern of the hardened product after the product of this embodiment is placed in the air for 3 days, wherein it can be found that the amorphous silicon dioxide has all disappeared, and calcium silicate hydrate with a good crystal structure has been generated, and the remaining part is not Reactive calcium carbonate. Mechanistically, the amorphous active silica in the aqueous solution of silica sol...

Embodiment 2

[0035] Embodiment 2: first weigh 100 grams of liquid silica sol (solid content=30%, hereinafter referred to as silica sol, the same below), and 300 grams of powdered calcium carbonate, and then inject the silica sol into the speed-regulating dispersion kettle, Then gradually add calcium carbonate and auxiliary materials, the amount of auxiliary materials is not more than 20% of the total mass, then stir at a high speed to disperse evenly, make a slurry, put it in a barrel and store it in a sealed manner. The storage time reaches 6 months, and the seven-day test The compressive strength is greater than 12MPa, the whiteness is greater than 85%, and the Mohs hardness is greater than 5.

Embodiment 3

[0036] Embodiment three: first mix 100 grams of silica sol, about 200 grams of powdered calcium carbonate, 20 grams of expanded perlite and 10 grams of EVA redispersible latex powder with a glass transition temperature MFT of about zero degrees and then adjust the speed Disperse evenly in the same way in the dispersing kettle. This product can be used as an inorganic fireproof and thermal insulation coating, and the storage time can reach 6 months after being loaded into barrels. Compared with the product of Example 2, its anti-crack performance is improved.

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Abstract

The invention discloses a base material of an inorganic coating and application of the base material. The base material is a mixture of liquid silica sol and calcium carbonate, wherein a mass ratio of the liquid silica sol to the calcium carbonate is 1:(3-10) based on solid content. The inorganic coating can be obtained by adding auxiliary materials which account for less than 20 percent of the total mass of the inorganic coating on the basis of the base material. The inorganic coating has the characteristics of high ageing resistance, high weather resistance, high chemical bonding force with a cement base layer, peeling avoidance, heat resistance, fire resistance, no toxicity, environment friendliness and energy conservation, does not contain strong alkaline ions such as potassium ion and sodium ion, has the pH value of less than 10 and is high in compatibility with pigments, a saltpetering phenomenon is avoided, and inorganic coatings of various colors can be manufactured. The base material can be used for preparing rigid waterproof materials, colored facing mortar, artificial stone materials and art paint.

Description

technical field [0001] The invention relates to an inorganic coating, in particular to an inorganic coating using silica sol, its preparation method and application. Background technique [0002] According to the national industry standard JG / 26-2002, inorganic architectural coatings can be divided into two types according to the main binder type. One is water glass (alkali metal silicate) as the main binder, adding pigments, fillers and additives. It is formulated; the second is formulated with silica sol as the main binder, adding an appropriate amount of synthetic resin emulsion, pigment, filler and additives. [0003] The main physical and chemical indicators of potassium silicate and silica sol commonly used in the preparation of inorganic coatings are shown in the table below: [0004] . [0005] From the composition of potassium silicate and silica sol, the main difference between the two lies in the alkali content. Although the former can also undergo calcificat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/06C09D7/41C09D7/61
CPCC09D1/00C09D5/024C09D7/61C09D7/41
Inventor 傅雁
Owner FUKE TECH (SUZHOU) CO LTD
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