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Color paste compatible inorganic building coating material and preparation method thereof

A kind of architectural coating and compatible technology, applied in the direction of coating, etc., can solve the problems of insufficient color brightness of inorganic pigment paste, floating color, and few types of inorganic pigments, etc., to achieve a wide range of color choices, convenient selection and replacement, Excellent effect of authenticity of hue

Active Publication Date: 2021-12-28
SHANGHAI EXCILON NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the commercially available general-purpose organic color paste for architectural coatings is directly used in an inorganic silicate system with a high pH without adjustment, the alkali metal silicate in the system will destroy the wetting and dispersion of the pigment particles coated in the color paste agent layer, so that the pigment particles are directly exposed, leading to the flocculation of the pigment particles, destroying the stable system of the color paste, the hue index of the color will change slowly, forming the problem of floating color, blooming and discoloration, and the toning performance is extremely poor
[0004] In order to solve the above problems, inorganic pigment color pastes are often used for color matching, but the color brightness of inorganic pigment color pastes is not enough, the coloring power is poor and the price is high; in addition, there are few types of inorganic pigments, and the color spectrum is incomplete, and many colors cannot be adjusted with inorganic pigments. , which greatly limits the range of color choices for end customers

Method used

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  • Color paste compatible inorganic building coating material and preparation method thereof
  • Color paste compatible inorganic building coating material and preparation method thereof
  • Color paste compatible inorganic building coating material and preparation method thereof

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preparation example Construction

[0039] The invention provides a color paste-compatible inorganic architectural coating and a preparation method thereof;

[0040] Color paste-compatible inorganic architectural coatings are divided into two components, A and B. In terms of 100%, the formula is as follows:

[0041] A component:

[0042] Silicone oligomer: 25-30%

[0043] Water-based acrylic resin: 1-5%

[0044] Graphene oxide: 0.05-2%

[0045] Dispersant: 0.2-0.5%

[0046] Defoamer: 0.2-0.5%

[0047] Inorganic filler: 25-30%

[0048] Thickener: 1-2%

[0049] Deionized water: balance

[0050] B component: universal color paste: 15-25%.

[0051] in:

[0052] Siloxane oligomer: the main film-forming substance, with a pH value of 3-4 and a degree of polymerization of 20-50. If the degree of polymerization is too small, the coating will have low hardness and poor wear resistance after curing; After the film is formed, the coating has high hardness and is easy to crack. In order to prevent the coating from...

Embodiment 1

[0068] This embodiment relates to a color paste-compatible inorganic architectural coating, the composition and ratio of which are shown in Table 1. The preparation method is as follows:

[0069] (1) Graphene oxide dispersion: Graphene oxide was mixed with a small amount of deionized water, and put into ultrasonic dispersion for 60 minutes to obtain a graphene oxide dispersion;

[0070] (2) Preparation of filler slurry: mix siloxane oligomer, dispersant, inorganic filler, deionized water, 60% defoamer, and graphene oxide dispersion evenly, grind on a grinder until the fineness is less than 20 μm, and use 300 mesh filter cloths are filtered to obtain filler slurry;

[0071] (3) The thickener is mixed with a 10% transparent solution for use;

[0072] (4) Mix the filler slurry, thickener, acidic acrylic resin, and 40% defoamer evenly, and the pH value is ≤5.5;

[0073] (5) Add the universal color paste to the coating obtained in step (4), and mix evenly to obtain a colored ino...

Embodiment 2

[0076] This embodiment relates to a color paste-compatible inorganic architectural coating, the composition and ratio of which are shown in Table 1. The preparation method is as follows:

[0077] (1) Graphene oxide dispersion: Graphene oxide was mixed with a small amount of deionized water, put into ultrasonic dispersion for 45 minutes, and obtained graphene oxide dispersion liquid;

[0078] (2) Preparation of filler slurry: mix siloxane oligomer, dispersant, inorganic filler, deionized water, 70% defoamer, and graphene oxide dispersion evenly, grind on a grinder until the fineness is less than 20 μm, and use 300 mesh filter cloths are filtered to obtain filler slurry;

[0079] (3) thickener is mixed with 8% transparent solution, stand-by;

[0080] (4) Mix the filler slurry, thickener, acidic acrylic resin, and 30% defoamer evenly, and the pH value is ≤5.5;

[0081] (5) Add the universal color paste to the coating obtained in step (4), and mix evenly to obtain a colored ino...

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Abstract

The invention discloses a color paste compatible an inorganic building coating material and a preparation method thereof. The color paste compatible an inorganic building coating material comprises a component A and a component B, wherein the component B is universal color paste, and the component A is prepared from the following components in percentage by mass based on the total weight of the component A: 25-30% of siloxane oligomer, 1-5%of waterborne acrylic resin, 0.05-2%of graphene oxide, 0.2-0.5%of a dispersing agent, 0.2-0.5%of a defoaming agent, 25-30%of an inorganic filler, 1-2%of a thickening agent and the balance of deionized water. According to the invention, the water-based building coating material is a weakly acidic system, cannot affect the stability of color paste, can adjust color by adopting the general organic color paste which is common in the market without flocculation, and has the advantages of good stability, low cost and wide color selection range.

Description

technical field [0001] The invention belongs to the technical field of coatings, and relates to a color paste-compatible inorganic architectural coating and a preparation method thereof. Background technique [0002] Inorganic architectural coatings are mainly made of alkali metal silicate or silica sol as the main binder, supplemented with a small amount of synthetic resin emulsion, pigments, fillers, additives, etc. Because silicate coatings have good non-combustibility, anti-mildew and anti-algae properties, environmental protection, air permeability, alkali resistance, and aging resistance, they are increasingly widely used in the field of indoor and outdoor wall decoration. [0003] However, due to the strong alkalinity of the alkali metal silicate itself (the pH value is generally above 13), the pH value of the coating product is also relatively high, up to 11-12. If the commercially available general-purpose organic color paste for architectural coatings is directly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D133/02C09D7/61
CPCC09D183/04C09D7/61C08L33/02C08K3/042
Inventor 李力锋赵杰张亚莉郁观贞
Owner SHANGHAI EXCILON NEW MATERIALS
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