CN114525046B

CN114525046B - Inorganic reflective heat-insulating light Tao Caidan coating and preparation method thereof

Info

Publication number: CN114525046B
Application number: CN202111604272.9A
Authority: CN
Inventors: 王福强; 戴国军; 潘建中; 王燕
Original assignee: Caparol China Co ltd
Current assignee: Hangzhou De Ai Wei Yun Building Materials Technology Co.,Ltd.
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2023-03-17
Anticipated expiration: 2041-12-24
Also published as: CN114525046A

Abstract

The invention belongs to the technical field of coatings, and relates to an inorganic reflective heat-insulating light Tao Caidan coating and a preparation method thereof, wherein the coating comprises the following components in parts by weight: 9-20 parts of water; 0.1-0.7 part of cellulose ether; 0.005-0.055 part of resistance reducing agent; 0.05 to 0.25 portion of multifunctional additive; 3-10 parts of emulsion; 0.1-0.8 part of an antifreezing agent; 0.3-1.2 parts of film-forming assistant; 0.1-0.4 part of defoaming agent; 0.1-0.4 part of preservative; 5-12 parts of inorganic materials; 0.005-0.035 parts of water repellent; 0.05 to 0.35 portion of thickening rheological agent; 0.5-4.0 parts of hollow microspheres; 40-90 parts of reflective insulation aggregate. The inorganic reflective heat-insulating light Tao Caidan coating disclosed by the invention has the characteristics of environmental friendliness, high reflective heat-insulating property, light weight, excellent initial water-white resistance, good weather resistance, excellent batch scraping construction property, small batch-to-batch color difference and the like. The method can be used for construction in a batch scraping mode, and can realize traceless repair.

Description

Inorganic reflective heat-insulating light Tao Caidan coating and preparation method thereof

Technical Field

The invention belongs to the technical field of sand wall-shaped texture coatings, and particularly relates to an inorganic reflective heat-insulating light Tao Caidan coating and a preparation method thereof.

Background

Tao Caidan coating, also known as Yajing Cai, tao Jingcai, and Jingcai Stone coating, is a new decorative material for interior and exterior walls; the coating is more and more popular in the market, and the coating is obviously superior to the traditional stone-like coating and texture coating in the aspects of weather resistance, water resistance, pollution resistance, acid and alkali resistance and the like. Bright color, easy construction, environmental protection, long quality guarantee and color retention effect, and is the best choice for the decoration of hotels, villas and the like; tao Caidan the building decorated by the exterior wall coating has natural and real natural color, gives people elegant, harmonious and solemn aesthetic feeling, and is suitable for indoor and outdoor decoration of various buildings. Especially, the decoration on the curved surface building is vivid and lifelike, and has an effect of returning to nature.

CN104909606A discloses a building decorative coating Tao Caidan and a production process thereof, the coating Tao Caidan adopts 40-80 mesh ceramic sand, the thickness of the coating is 2mm, and the defects that the traditional emulsion paint is single in color, easy to pulverize and insufficient in thickness and has no anti-cracking function are overcome; meanwhile, the color of the ceramic sand can be fired at will, the color is stable, the ceramic sand has the sand feeling of texture paint, no color paste is required to be added, the risk of fading is avoided, the particle size is uniform, and the generation of joint marks is greatly reduced in the construction process; the Tao Caidan formula is characterized in that silica sol is introduced, the coating film composite base materials are arranged in a spherical or nearly spherical shape, the surface is flat and compact, pores are few, fine dust particles are difficult to invade the pores, dust is difficult to adhere, and the coating has good stain resistance.

Although the application patent solves the defects that the traditional emulsion paint is single in color, easy to pulverize and insufficient in thickness and has no anti-cracking function, the problems of thin particle size, poor texture effect, high sand density and high consumption exist, and meanwhile, only silica sol is added into a film forming material to help to improve the stain resistance, so that the limitation is realized. With the increasing emphasis on environmental protection and energy conservation in China, the reflective heat insulation function of the coating is required. But it has only a decorative effect and no reflective insulation function.

Disclosure of Invention

The invention provides an inorganic reflective heat-insulating light Tao Caidan coating and a preparation method thereof, aiming at the defects of the prior art. The inorganic reflective heat-insulating light Tao Caidan coating disclosed by the invention has the advantages of environmental friendliness, high reflective heat-insulating property, light weight (low consumption), excellent initial water-white resistance, good weather resistance, excellent workability, small batch-to-batch color difference and the like, and can be used for easily realizing traceless repair.

In order to achieve the purpose, the invention provides an inorganic reflective heat-insulating light Tao Caidan coating in a first aspect, which comprises the following components in parts by weight:

the invention provides a preparation method of an inorganic reflective heat-insulating light Tao Caidan coating, which comprises the following steps:

(1) Mixing water, cellulose ether, a resistance reducing agent, a multifunctional additive, an emulsion, an antifreezing agent, a film forming additive, a defoaming agent, a preservative, an inorganic material, a water repellent and a thickening rheological agent, adding hollow microspheres, and dispersing to obtain an inorganic reflective heat-insulating light Tao Caidan coating base material;

(2) Adding reflective insulation aggregate into the inorganic reflective insulation light Tao Caidan coating base material obtained in the step (1), and uniformly mixing to obtain the inorganic reflective insulation light Tao Caidan coating

The invention has the beneficial effects that:

(1) The film forming material preferably adopts a compound mixture of self-cleaning emulsion matched with inorganic potassium silicate and silica sol, and the film forming material is mainly inorganic material, so that the product has good environmental protection property and low VOC. The self-cleaning emulsion with a special core-shell structure is matched with silica sol, so that a paint film has better stain resistance and excellent weather resistance, and the wall surface is kept as new and durable.

(2) The inorganic reflective heat-insulation light Tao Caidan coating is preferably compounded by reflective heat-insulation Tao Cai circular sand and hollow purple sand, has excellent weather resistance and can be used for 30-50 years, and simultaneously, the quality of the product is greatly reduced due to the use of the hollow purple sand, so that the consumption is reduced. In addition, the color-mixing water-based natural color sand has high hardness, low water absorption, good acid and alkali resistance and stable color among batches, is favorable for color mixing, forms streamlined production, greatly improves the production efficiency and solves the problem of unstable color of the natural color sand in batches.

(3) The invention preferably adopts a special delustering agent to partially replace the traditional cellulose or bentonite, and particularly preferably adopts Acrylamide (AM) and a small amount of hydrophobic monomers (octylphenol polyoxyethylene (4) ether acrylate, OP-4-AC) to prepare the modified polyvinyl alcohol in a Sodium Dodecyl Sulfate (SDS) aqueous solution by adopting a micelle copolymerization method, so that the modified polyvinyl alcohol has good mechanical property, unusual swelling behavior, transparency, resilience and obvious thermo-elastic behavior, and the unique reversible crosslinking network structure endows the modified polyvinyl alcohol with excellent thixotropy; compared with cellulose ether and bentonite organic thickeners, the water-retaining property is achieved, moisture regain and water absorption are avoided, the surface drying time can be adjusted, and the biggest characteristic is that the frictional resistance between liquids can be obviously reduced, so that the construction is smoother.

(4) The hollow microspheres adopted by the invention are preferably ceramic hollow microspheres, ti-B4C-C is used as a reaction system, and the self-reaction type composite powder subjected to agglomeration treatment is subjected to meltallizing based on the traditional flame thermal spraying principle and equipment, so that the self-propagating high-temperature synthesis (SHS for short) reaction is carried out in the flying process, and the hollow ceramic microspheres are prepared. The surface of the ceramic shell is a closed ceramic shell, and the interior of the ceramic shell is closed by a large amount of micro particles such as air, so that the ceramic shell has the characteristics of low density and low thermal conductivity. Through the double functions of compounding the ceramic hollow microspheres and the reflective heat-insulation round ceramic color sand, the reduction of the heat-insulation function caused by the fact that the traditional glass microspheres are easy to break under the action of mechanical force is prevented. So that the product of the invention has excellent reflective heat-insulating property.

Detailed Description

Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein.

The invention provides an inorganic reflective heat-insulation light Tao Caidan coating which comprises the following components in parts by weight:

preferably, the coating comprises the following components in parts by weight:

according to one embodiment of the present invention, the resistance-reducing agent is a hydrophobic junction-containing materialThe anti-friction agent is composed of polyacrylamide of constitutional units, and is preferably prepared by copolymerizing acrylamide and hydrophobic monomers through micelles; more preferably, the resistance reducing agent is prepared by copolymerizing acrylamide and octyl phenol polyoxyethylene (4) ether acrylate in a sodium dodecyl sulfate aqueous solution by adopting micelles; further preferably, the resistance reducer is

Slipping agent S18.

The resistance reducing agent used in the invention is preferably an anionic polymer, has a reversible cross-linked network structure and has a molecular weight of 400-600 ten thousand. The resistance reducing agent has good mechanical property, unusual swelling behavior, transparency, rebound resilience and obvious thermal elastic behavior, and the unique reversible crosslinking network structure endows the resistance reducing agent with excellent thixotropy. Compared with cellulose ether and bentonite organic thickeners, the water-retaining property is achieved, moisture regain and water absorption are avoided, the surface drying time can be adjusted, and the biggest characteristic is that the frictional resistance between liquids can be obviously reduced, so that the construction is smoother.

Specifically, the emulsion is an acrylic polymer, the particles of the emulsion are in a core-shell structure, the surface of the emulsion is in a hydrophilic structure, and the interior of the emulsion is in a hydrophobic structure.

Preferably, the emulsion is compounded by acrylate copolymerization emulsion and self-cleaning acrylate emulsion, and the weight compounding ratio of the emulsion is 7:2-4.

More preferably, the acrylate copolymer emulsion is selected from at least one of bardet rich RS-706T, bardet rich RS-992T and Bertania BLJ-838A-2, preferably bardet rich RS-706T; the self-cleaning acrylic ester emulsion is selected from at least one of Bardell RS-8867 and Luo Sifu ROSF-5005, and is preferably Bardell RS-8867.

The particles of the acrylate copolymer emulsion and the self-cleaning emulsion used in the invention are preferably of a core-shell structure, the surface of the emulsion is of a hydrophilic structure, the interior of the emulsion is of a hydrophobic structure, the particle size of the emulsion is 0.1-0.2 mu m, and the special structure of the emulsion particles gives excellent water resistance and high strength of water soaking to the coating film.

According to the invention, the inorganic material is preferably a mixture of potassium silicate and silica sol in a weight ratio of 3 to 5:3-7.

Preferably, the silica sol is a silane modified nano-silica dispersion compounded with a metal ion surface treated nano-silica dispersion, and the weight compounding ratio of the silane modified nano-silica dispersion to the metal ion surface treated nano-silica dispersion is 1:1-1.5.

More preferably, the silane-modified nanosilica dispersion has a pH of from 8.5 to 10.5 and a particle size of from 6 to 12nm; the pH value of the nano silicon dioxide dispersoid subjected to the surface treatment by the metal ions is 9-11, and the particle size is 8-14nm.

The film forming material preferably adopts a compound mixture of self-cleaning emulsion matched with inorganic potassium silicate and silica sol, and the film forming material is mainly inorganic material, so that the product has good environmental protection property and low VOC. The self-cleaning emulsion with a special core-shell structure is matched with silica sol, so that a paint film has better stain resistance and excellent weather resistance, and the wall surface is kept as new and durable.

Specifically, the cenospheres are at least one selected from glass cenospheres and ceramic cenospheres, preferably ceramic cenospheres, and the particles of the ceramic cenospheres have a hollow ceramic shell structure with a closed surface.

Preferably, the ceramic hollow microspheres are prepared by taking Ti-B4C-C as a reaction system, and based on the traditional flame thermal spraying principle and equipment, performing melt-injection on the self-reaction type composite powder subjected to agglomeration treatment to perform self-propagating high-temperature synthesis reaction in the flight process.

The particle size of the hollow ceramic microspheres used in the invention is 10-20 μm, the surface of the hollow ceramic microspheres is a closed ceramic shell, and the interior of the hollow ceramic microspheres is closed by micro particles such as a large amount of air, so that the hollow ceramic microspheres have the characteristics of low density and low heat conductivity.

According to the invention, the reflective insulation aggregate is preferably a compound of reflective insulation Tao Cai circular sand and hollow purple sand, and the weight compound ratio of the circular sand and the hollow purple sand is 8:1-3.

Preferably, the reflective insulation Tao Cai round sand is prepared by taking quartz sand as a raw material, adding an inorganic reflective insulation pigment and an inorganic adhesive, and sintering at a high temperature higher than 950 ℃.

Preferably, the hollow purple sand is sintered at a calcination temperature higher than 1150 ℃.

The particles of the reflective insulation Tao Cai round sand used in the invention preferably comprise quartz sand particles and reflective insulation pigment coating films coated outside the quartz sand particles, the particle size is 16-180 meshes, the particles of the hollow purple sand preferably have a hollow structure, the particle size is 16-180 meshes, the hollow purple sand contains abundant metal elements, wherein ores with different contents show different color types through oxidation sintering, the weight is lighter, the material color types are rich, the hollow purple sand is pure and has no color difference, and the acid and alkali resistance can never fade for a long time.

The ceramic hollow microspheres and the reflective heat-insulation circular ceramic color sand can play a dual heat-insulation role, and the ceramic hollow microspheres overcome the problem that the traditional glass microspheres are easy to break under the action of mechanical force, so that the heat-insulation function is reduced. This results in the product of the invention having excellent reflective insulation properties.

According to the invention, the cellulose ether is preferably compounded by hydrophobic modified cellulose ether and hydroxyethyl cellulose ether, and the weight compounding ratio of the hydrophobic modified cellulose ether to the hydroxyethyl cellulose ether is 0.7-0.9; preferably, the hydrophobically modified cellulose ether is at least one of EBS481FQ, EHM500, HE10K, and the hydroxyethyl cellulose ether is at least one of 250HBR, HS30000YP 2.

The antifreezing agent is preferably at least one of propylene glycol and ethylene glycol, and is preferably propylene glycol;

the film-forming auxiliary agent is preferably at least one of an alcohol ester film-forming agent, an alcohol ether film-forming agent and an alcohol ether ester film-forming agent; preferably, the alcohol ester film former is at least one of lauryl alcohol ester, cetyl alcohol ester and stearyl alcohol ester; most preferably, the coalescent is a dodecyl alcohol ester.

The multifunctional auxiliary agent is preferably selected from at least one of NX-198 and AMP-95, and is preferably AMP-95.

The defoaming agent is preferably at least one of a mineral oil type defoaming agent and a silicone type defoaming agent.

The preservative is preferably a compound of isothiazolinone and formaldehyde, and the weight ratio of the isothiazolinone to the formaldehyde is 2:3-5.

The water repellent is preferably solvent-free silane and/or siloxane-based organosilicon concentrate, and is preferably at least one selected from Wake's BS290 and KH-460 of lotus leaf chemical industry.

The thickening rheological agent is preferably a hydrophobic modified polyurethane thickening agent, and is preferably at least one selected from RM-8W, RM-2020.

The invention also provides a preparation method of the inorganic reflective heat-insulating light Tao Caidan coating, which comprises the following steps:

(2) And (2) adding reflective insulation aggregate into the inorganic reflective insulation lightweight Tao Caidan coating base material obtained in the step (1), and uniformly mixing to obtain the inorganic reflective insulation lightweight Tao Caidan coating.

Preferably, the preparation method of the inorganic reflective heat-insulating light Tao Caidan coating comprises the following steps;

(1) Adding deionized water into a container, slowly adding cellulose ether for many times at the rotating speed of 300-500rpm, and stirring for 3-5min;

(2) Slowly adding the resistance reducing agent for many times at the rotating speed of 600-800rpm, and stirring for 5-8min;

(3) Increasing the rotating speed to 1000-1200rpm, sequentially adding a multifunctional auxiliary agent, an emulsion, an antifreezing agent, a film forming auxiliary agent, a defoaming agent, a preservative, an inorganic material, a water repellent, a thickening rheological agent and ceramic hollow microspheres, adding each material, uniformly stirring, and uniformly dispersing to obtain an inorganic reflective heat-insulating light Tao Caidan coating base material;

(4) Adding reflective insulation aggregate into the inorganic reflective insulation lightweight Tao Caidan coating base material, and uniformly mixing to obtain the inorganic reflective insulation lightweight Tao Caidan coating.

The present invention is explained in more detail by examples, comparative examples and test examples. The following examples are merely illustrative of the present invention and should not be construed as limiting the scope of the invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are conventional products which are not indicated by manufacturers and are commercially available.

In the following examples and comparative examples, the components are commercially available and the chemical composition or supplier (and/or brand) of the components is as follows:

comparative example

The inorganic Tao Caidan coating provided by the comparative example comprises the following components in parts by weight:

20.13 parts of water, 0.3 part of cellulose ether, 0.02 part of resistance reducing agent, 0.15 part of multifunctional additive, 12 parts of emulsion, 0.7 part of antifreeze, 1.2 parts of film forming additive, 0.2 part of defoamer, 0.2 part of preservative, 0.1 part of thickening rheological agent and 65 parts of Tao Cai round sand, and the preparation method comprises the following steps:

(1) Firstly, adding deionized water into a container, then slowly adding 0.3 part of cellulose ether for many times at the rotating speed of 300-500rpm, and stirring for 3-5min;

(2) Then slowly adding 0.02 part of resistance reducing agent for many times at the rotating speed of 600-800rpm, and stirring for 5-8min;

(3) Increasing the rotating speed to 1000-1200rpm, sequentially adding a multifunctional auxiliary agent, an emulsion, an antifreezing agent, a film forming auxiliary agent, an antifoaming agent, a preservative and a thickening rheological agent, adding each material, uniformly stirring, and dispersing uniformly to obtain an inorganic Tao Caidan coating base material;

(4) Adding 65 parts of Tao Cai round sand into the inorganic Tao Caidan coating base material obtained in the steps (1) to (3), and uniformly mixing to obtain the inorganic Tao Caidan coating.

Example 1

The inorganic reflective heat-insulating light Tao Caidan coating provided by the embodiment comprises the following components in parts by weight:

11.95 parts of water, 0.3 part of cellulose ether, 0.02 part of resistance reducing agent, 0.15 part of multifunctional additive, 6 parts of emulsion, 0.3 part of antifreezing agent, 0.6 part of film-forming additive, 0.2 part of defoaming agent, 0.2 part of preservative, 9 parts of inorganic material, 0.03 part of water repellent, 0.25 part of thickening rheological agent, 1 part of hollow microsphere and 70 parts of reflective heat-insulating aggregate, wherein the preparation method comprises the following steps:

(4) Adding 70 parts of reflective insulation aggregate into the inorganic reflective insulation lightweight Tao Caidan coating base material obtained in the steps (1) - (3), and uniformly mixing to obtain the inorganic reflective insulation lightweight Tao Caidan coating.

Example 2

11.45 parts of water, 0.3 part of cellulose ether, 0.03 part of resistance reducing agent, 0.15 part of multifunctional additive, 6 parts of emulsion, 0.3 part of antifreezing agent, 0.6 part of film-forming additive, 0.2 part of defoaming agent, 0.2 part of preservative, 9 parts of inorganic material, 0.02 part of water repellent, 0.25 part of thickening rheological agent, 1.5 parts of hollow microsphere and 70 parts of reflective heat-insulating aggregate, wherein the preparation method comprises the following steps:

(4) And (4) adding 70 parts of reflective insulation aggregate into the inorganic reflective insulation lightweight Tao Caidan coating base material obtained in the steps (1) - (3), and uniformly mixing to obtain the inorganic reflective insulation lightweight Tao Caidan coating.

Example 3

15.8 parts of water, 0.3 part of cellulose ether, 0.03 part of resistance reducing agent, 0.15 part of multifunctional additive, 7 parts of emulsion, 0.4 part of antifreezing agent, 0.7 part of film-forming additive, 0.2 part of defoaming agent, 0.2 part of preservative, 8 parts of inorganic material, 0.01 part of water repellent, 0.2 part of thickening rheological agent, 2 parts of hollow microsphere and 65 parts of reflective heat-insulating aggregate, wherein the preparation method comprises the following steps:

(2) Then slowly adding 0.03 part of resistance reducing agent for many times at the rotating speed of 600-800rpm, and stirring for 5-8min;

(4) Adding 65 parts of reflective insulation aggregate into the inorganic reflective insulation light Tao Caidan coating base material obtained in the steps (1) - (3), and uniformly mixing to obtain an inorganic reflective insulation light Tao Caidan coating;

example 4

15.3 parts of water, 0.3 part of cellulose ether, 0.04 part of resistance reducing agent, 0.15 part of multifunctional additive, 7 parts of emulsion, 0.4 part of antifreezing agent, 0.7 part of film-forming additive, 0.2 part of defoaming agent, 0.2 part of preservative, 8 parts of inorganic material, 0.02 part of water repellent, 0.2 part of thickening rheological agent, 2.5 parts of hollow microsphere and 65 parts of reflective heat-insulating aggregate, wherein the preparation method comprises the following steps:

(2) Then slowly adding 0.04 part of resistance reducing agent for many times at the rotating speed of 600-800rpm, and stirring for 5-8min;

example 5

14.65 parts of water, 0.3 part of cellulose ether, 0.04 part of resistance reducing agent, 0.15 part of multifunctional additive, 8 parts of emulsion, 0.5 part of antifreezing agent, 0.8 part of film-forming additive, 0.2 part of defoaming agent, 0.2 part of preservative, 7 parts of inorganic material, 0.01 part of water repellent, 0.15 part of thickening rheological agent, 3 parts of hollow microsphere and 65 parts of reflective heat-insulating aggregate, wherein the preparation method comprises the following steps:

(4) And (3) adding 65 parts of reflective insulation aggregate into the inorganic reflective insulation light Tao Caidan coating base material obtained in the steps (1) to (3), and uniformly mixing to obtain the inorganic reflective insulation light Tao Caidan coating.

Example 6

The inorganic reflective heat-insulation light Tao Caidan coating provided by the embodiment comprises the following components in parts by weight:

14.14 parts of water, 0.3 part of cellulose ether, 0.05 part of resistance reducing agent, 0.15 part of multifunctional additive, 8 parts of emulsion, 0.5 part of antifreezing agent, 0.8 part of film-forming additive, 0.2 part of defoaming agent, 0.2 part of preservative, 7 parts of inorganic material, 0.01 part of water repellent, 0.15 part of thickening rheological agent, 3.5 parts of hollow microsphere and 65 parts of reflective heat-insulating aggregate, wherein the preparation method comprises the following steps:

(2) Then slowly adding 0.05 part of resistance reducing agent for many times at the rotating speed of 600-800rpm, and stirring for 5-8min;

(4) And (3) adding 65 parts of reflective insulation aggregate into the inorganic reflective insulation light Tao Caidan coating base material obtained in the steps (1) to (3), and uniformly mixing to obtain the inorganic reflective insulation light Tao Caidan coating. The formulations of the comparative and examples 1-6 are shown in Table 1.

TABLE 1 comparative and example 1-6 formulations

Test example 1

The initial water-white resistance test was performed on the inorganic reflective insulation Tao Caidan made in examples 1-6 of the present invention and the comparative example product, the test method was: coating a 2mm profile on an A4 cement plate coated with a seal primer to prepare a film, curing the film for 16 hours in a constant-temperature and constant-humidity box at the temperature of 5 ℃ and the humidity of 80 ℃, then dripping the film for 8 hours in a test box with constant water flow speed (three drops per second), and observing the whitening state of the paint film and the recovery degree of the water whitening of the paint film after the dripping test is finished.

According to JG/T24-2018 synthetic resin emulsion sand wall building coating outer wall type, GB/T25261-2018 reflective insulation texture finish paint for building and GB/T10294-2008 heat insulation material steady state thermal resistance and related characteristic determination protective hot plate method, the inorganic reflective insulation Tao Caidan and the comparative example products manufactured in examples 1-6 and comparative example of the invention are detected in water resistance, alkali resistance, bonding strength, artificial aging resistance and stain resistance, and the detection results are shown in Table 2.

Table 2 examples 1-6 and comparative examples basic performance testing

As can be seen from Table 2, the inorganic reflective insulation Tao Caidan product of the present invention has higher water resistance, alkali resistance, bonding strength, initial water-white resistance, artificial aging resistance and stain resistance than the proportion, and can meet the basic performance requirements of the product.

Test example 2

The inorganic reflective insulation Tao Caidan made in examples 1-6 of the present invention and the comparative example were tested for reflective insulation performance, and the results are shown in table 3.

TABLE 3 test of reflective insulation Properties

As can be seen from Table 3, the inorganic reflective insulation Tao Caidan product of the invention has higher sunlight reflectance and near infrared reflectance and lower heat conductivity coefficient compared with the common Tao Caidan, has good reflection effect on sunlight and near infrared light, and can effectively reduce heat transfer from the outer wall of a building to the indoor, thereby saving energy and reducing consumption.

While embodiments of the present invention have been described above, the above description is illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. An inorganic reflective heat-insulating light Tao Caidan coating is characterized by comprising the following components in parts by weight:

the emulsion is an acrylic polymer, the particles of the emulsion are of a core-shell structure, the surface of the emulsion is of a hydrophilic structure, and the interior of the emulsion is of a hydrophobic structure;

the emulsion is compounded by acrylate copolymer emulsion and self-cleaning acrylate emulsion;

the inorganic material is a mixture of potassium silicate and silica sol;

the silica sol is a silane modified nano silicon dioxide dispersoid compounded with a metal ion surface treated nano silicon dioxide dispersoid;

the reflective insulation aggregate is a compound of reflective insulation Tao Cai circular sand and hollow purple sand, and the weight compound ratio of the reflective insulation aggregate to the hollow purple sand is 8:1-3.

2. The inorganic reflective insulating lightweight Tao Caidan coating of claim 1, comprising in parts by weight:

。

3. the inorganic reflective insulating lightweight Tao Caidan coating of claim 1 or 2, wherein the resistance reducing agent is polyacrylamide containing hydrophobic structural units.

4. The inorganic reflective thermal insulation lightweight Tao Caidan coating of claim 3, wherein the resistance reducing agent is prepared by micelle copolymerization of acrylamide and hydrophobic monomers.

5. The inorganic reflective heat-insulating light Tao Caidan coating of claim 4, wherein the resistance reducing agent is prepared by copolymerization of acrylamide and octylphenol polyoxyethylene (4) ether acrylate in a sodium dodecyl sulfate aqueous solution by adopting micelle.

6. The inorganic reflective insulation lightweight Tao Caidan coating of claim 5, wherein the friction reducer is JTBON slipping agent S18.

7. The inorganic reflective heat-insulating lightweight Tao Caidan coating as claimed in claim 1 or 2, wherein the weight compounding ratio of the acrylate copolymer emulsion and the self-cleaning acrylate emulsion is 7:2-4.

8. The inorganic reflective insulating lightweight Tao Caidan coating of claim 1,

the acrylate copolymer emulsion is selected from at least one of Badeluxe RS-706T, badeluxe RS-992T and Baolika BLJ-838A-2; the self-cleaning acrylate emulsion is selected from at least one of Badfu RS-8867, luo Sifu ROSF-5005.

9. The inorganic reflective insulating lightweight Tao Caidan coating of claim 8 wherein said acrylate copolymer emulsion is bardet RS-706T; the self-cleaning acrylate emulsion is Badbifu RS-8867.

10. The inorganic reflective insulating lightweight Tao Caidan coating of claim 1 or 2, wherein the weight ratio of potassium silicate to silica sol is 3-5:3-7.

11. The inorganic reflective thermal insulation lightweight Tao Caidan coating of claim 1, wherein the weight compounding ratio of the silane modified nano silica dispersion to the metal ion surface treated nano silica dispersion is 1:1-1.5.

12. The inorganic reflective insulating lightweight Tao Caidan coating of claim 1 wherein the silane modified nanosilica dispersion has a pH of 8.5-10.5 and a particle size of 6-12nm; the pH value of the nano silicon dioxide dispersoid subjected to metal ion surface treatment is 9-11, and the particle size is 8-14nm.

13. The inorganic reflective insulating lightweight Tao Caidan coating of claim 1 or 2, wherein the cenospheres are selected from at least one of glass cenospheres and ceramic cenospheres.

14. The inorganic reflective insulating lightweight Tao Caidan coating of claim 13, wherein said cenospheres are ceramic cenospheres, the particles of said ceramic cenospheres have a ceramic shell structure with closed and hollow surfaces.

15. The inorganic reflective heat-insulation light Tao Caidan coating of claim 14, wherein the ceramic hollow microsphere is prepared by using Ti-B4C-C as a reaction system, based on a traditional flame thermal spraying principle and equipment, and performing a self-propagating high-temperature synthesis reaction on self-reacting composite powder subjected to agglomeration treatment in a flight process.

16. The inorganic reflective heat-insulating lightweight Tao Caidan coating as claimed in claim 1, wherein the reflective heat-insulating Tao Cai round sand is prepared by taking quartz sand as a raw material, adding an inorganic reflective heat-insulating pigment and an inorganic binder, and sintering at a high temperature higher than 950 ℃;

the hollow purple sand is sintered at a calcination temperature higher than 1150 ℃.

17. The inorganic reflective heat-insulating light Tao Caidan coating as claimed in claim 1 or 2, wherein the cellulose ether is a combination of hydrophobically modified cellulose ether and hydroxyethyl cellulose ether, and the weight ratio of the two is 0.7-0.9;

the antifreezing agent is at least one of propylene glycol and ethylene glycol;

the film-forming auxiliary agent is at least one of an alcohol ester film-forming agent, an alcohol ether film-forming agent and an alcohol ether ester film-forming agent.

18. The inorganic reflective insulating lightweight Tao Caidan coating of claim 17 wherein said hydrophobically modified cellulose ether is at least one of EBS481FQ, EHM500, HE10K and said hydroxyethyl cellulose ether is at least one of 250HBR, HS30000YP 2;

the antifreezing agent is propylene glycol;

the alcohol ester film former is at least one of dodecyl alcohol ester, hexadecyl alcohol ester and octadecyl alcohol ester.

19. The inorganic reflective insulating lightweight Tao Caidan coating of claim 18 wherein the coalescent is a dodecanol ester.

20. The inorganic reflective insulating lightweight Tao Caidan coating of claim 1 or 2,

the multifunctional auxiliary agent is at least one of NX-198 and AMP-95;

the defoaming agent is at least one of a mineral oil defoaming agent and an organic silicon defoaming agent;

the preservative is a compound of isothiazolinone and formaldehyde, and the weight ratio of the isothiazolinone to the formaldehyde is 2:3-5;

the water repellent is solvent-free silane and/or siloxane-based organosilicon concentrated solution;

the thickening rheological agent is a hydrophobic modified polyurethane thickening agent.

21. The inorganic reflective insulating lightweight Tao Caidan coating of claim 20 wherein said multifunctional adjuvant is AMP-95;

the water repellent is selected from at least one of Buck BS290 and KH-460 of lotus leaf chemical industry;

the thickening rheological agent is at least one of RM-8W, RM-2020.

22. The method for preparing the inorganic reflective insulating lightweight Tao Caidan coating of any one of claims 1-21, comprising the steps of:

(2) Adding reflective insulation aggregate into the inorganic reflective insulation lightweight Tao Caidan coating base material obtained in the step (1), and uniformly mixing to obtain the inorganic reflective insulation lightweight Tao Caidan coating.