阅读说明：本技术 一种节能墙用粉料及其制备方法 (Powder for energy-saving wall and preparation method thereof ) 是由 周琴 白金宝 于 2021-08-18 设计创作，主要内容包括：本发明公开了一种节能墙用粉料及其制备方法,所述节能墙用粉料包括如下重量含量原料：空心玻璃微珠2-10％、硅烷偶联剂0.3-1.5％、磺化三聚氰胺甲醛树脂减水剂0.1-0.3％、纤维素醚0.1-0.3％；通过硅烷偶联剂对空心玻璃微珠表面进行修饰,增强空心玻璃微珠与磺化三聚氰胺甲醛树脂减水剂、纤维素醚、淀粉醚等有机物的相容性,得到一种具有细腻顺滑的粉体效果、分散性佳、耐酸碱性、粘性高、隔热、防潮的节能墙用粉料。(The invention discloses a powder for an energy-saving wall and a preparation method thereof, wherein the powder for the energy-saving wall comprises the following raw materials in parts by weight: 2-10% of hollow glass beads, 0.3-1.5% of silane coupling agent, 0.1-0.3% of sulfonated melamine formaldehyde resin water reducing agent and 0.1-0.3% of cellulose ether; the surface of the hollow glass microsphere is modified by the silane coupling agent, and the compatibility of the hollow glass microsphere and organic matters such as sulfonated melamine formaldehyde resin water reducing agent, cellulose ether, starch ether and the like is enhanced, so that the energy-saving wall powder with fine and smooth powder effect, good dispersibility, acid and alkali resistance, high viscosity, heat insulation and moisture resistance is obtained.)

1. The powder for the energy-saving wall is characterized by comprising the following raw materials in parts by weight:

2. the powder material for energy-saving walls as claimed in claim 1, wherein the silane coupling agent is one or more of gamma-chloropropyltrimethoxysilane, vinyltriethoxysilane, vinyltrimethoxysilane, gamma- (3, 2-epoxypropoxy) -methyltrimethoxysilane, gamma-mercaptopropyltriethoxysilane, N-beta (aminoethyl) -gamma-aminopropylmethyldiethoxysilane, and gamma-aminopropyltriethoxysilane.

3. The energy-saving wall powder material according to claim 1, wherein the cellulose ether is one or more of methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose and hydroxypropyl methyl cellulose.

4. The energy-saving wall powder material as claimed in claim 1, further comprising the following raw materials in parts by weight:

5. the preparation method of the powder for the energy-saving wall is characterized by comprising the following steps of:

s1, blending silane coupling agent, hollow glass beads and a small amount of deionized water for ultrasonic treatment, adjusting the pH value to be alkaline, heating, stirring and post-treating to obtain surface-modified hollow glass beads for later use;

s2, adding the leveling agent, the thickening agent, the dispersing agent and the dimethyl silicone oil into a stirrer, stirring at a high speed, then reducing the rotating speed, adding the surface modified hollow glass beads prepared in the step S1, stirring for a period of time, reducing the rotating speed, and stirring to obtain a material for later use;

s3, adding gypsum powder, 200-mesh quartz powder, 400-mesh quartz powder, silica fume, white volcanic ash, organic silicon powder and calcium silicate powder into a stirring tank, stirring at a high speed, sampling, measuring the temperature, adding wood fiber, waterproof latex powder, starch ether, a sulfonated melamine formaldehyde resin water reducer and cellulose ether, and stirring to obtain a material for later use;

s4, when in use, mixing the material prepared in the step S2 with the material prepared in the step S3 to obtain the powder for the energy-saving wall.

6. The method for preparing a pulverized material for an energy-saving wall as claimed in claim 5, wherein the heating temperature in step S1 is 40-60 ℃.

7. The method for preparing powder lot for energy-saving walls according to claim 5, wherein the pH adjustment to alkalinity in step S1 is performed by adding sodium hydroxide to adjust the pH to 9-11.

8. The method for preparing powder for an energy-saving wall as claimed in claim 5, wherein in step S2, the rotation speed of the stirrer is reduced to 300 rpm; the speed was then reduced to 150 rpm.

9. The method for preparing the powder material for the energy-saving wall as claimed in claim 5, wherein in step S3, wood fiber, waterproof latex powder, starch ether, sulfonated melamine formaldehyde resin water reducing agent and cellulose ether are added when the temperature for sampling and measuring the temperature is lower than 35 ℃.

10. The method for preparing powder for an energy-saving wall as claimed in claim 5, wherein in step S4, the weight ratio of the material prepared in step S2 to the material prepared in step S3 is 1: 3.

Technical Field

The invention belongs to the field of buildings, and particularly relates to powder for an energy-saving wall and a preparation method thereof.

Background

The application of the powder for the wall in the prior art generally only solves the problem of wall surface leveling and has no functionality. The wall surface leveling powder generally has the defects of poor heat insulation performance, poor corrosion and moisture resistance, poor dispersibility and low viscosity, and can not meet the requirements of modern buildings on environmental protection, energy conservation and longer service life.

The hollow glass microspheres have large volume, extremely light weight and excellent heat insulation and moisture resistance, but have poor corrosion resistance, and in order to obtain good corrosion resistance of the wall powder prepared from the hollow glass microspheres, organic or inorganic preservatives are usually added into the wall powder, the compatibility of the organic preservatives and inorganic substances such as the hollow glass microspheres is poor, the inorganic preservatives are difficult to disperse in organic polymer materials in the wall powder, and the obtained wall powder has poor corrosion resistance.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the powder for the energy-saving wall, the surface of the hollow glass microsphere is modified by a silane coupling agent, the compatibility of the hollow glass microsphere and organic matters such as a sulfonated melamine formaldehyde resin water reducing agent, cellulose ether, starch ether and the like is enhanced, and the powder for the energy-saving wall, which has the advantages of fine and smooth powder effect, good dispersibility, acid and alkali resistance, high viscosity, heat insulation and moisture resistance, is obtained.

The invention aims to provide a powder for an energy-saving wall, which comprises the following raw materials in parts by weight:

preferably, the silane coupling agent is one or more of gamma-aminopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane, gamma-aminopropylmethyldiethoxysilane, N-beta (aminoethyl) -gamma-aminopropyltrimethoxysilane, N-beta (aminoethyl) -gamma-aminopropyltriethoxysilane, N-beta (aminoethyl) -gamma-aminopropylmethyldiethoxysilane and aminoethylaminopropyltrimethoxysilane.

Preferably, the cellulose ether is one or more of methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose.

Further, the powder for the energy-saving wall also comprises the following raw materials in parts by weight:

the invention also aims to provide a preparation method of the powder for the energy-saving wall, which comprises the following steps:

s1, blending silane coupling agent, hollow glass beads and a small amount of deionized water for ultrasonic treatment, adjusting the pH value to be alkaline, heating, stirring and post-treating to obtain surface-modified hollow glass beads for later use;

s2, adding the leveling agent, the thickening agent, the dispersing agent and the dimethyl silicone oil into a stirrer, stirring at a high speed, then reducing the rotating speed, adding the surface modified hollow glass beads prepared in the step S1, stirring for a period of time, reducing the rotating speed, and stirring to obtain a material for later use;

s3, adding gypsum powder, 200-mesh quartz powder, 400-mesh quartz powder, silica fume, white volcanic ash, organic silicon powder and calcium silicate powder into a stirring tank, stirring at a high speed, sampling, measuring the temperature, adding wood fiber, waterproof latex powder, starch ether, a sulfonated melamine formaldehyde resin water reducer and cellulose ether, and stirring to obtain a material for later use;

s4, when in use, mixing the material prepared in the step S2 with the material prepared in the step S3 to obtain the powder for the energy-saving wall.

Further, in step S1, the heating temperature is 40 to 60 ℃.

Further, in step S1, the pH adjustment to alkalinity is to adjust the pH to 9-11 by adding sodium hydroxide.

Further, in step S1, the post-treatment is trichloroacetic acid/deionized water cleaning.

Further, in step S2, the rotation speed of the agitator is adjusted to 300 rpm; the speed was then reduced to 150 rpm.

Further, in step S3, wood fiber, waterproof latex powder, starch ether, sulfonated melamine formaldehyde resin water reducing agent, and cellulose ether are added when the temperature of sampling and temperature measurement is lower than 35 ℃.

Further, the weight ratio of the material prepared in the step S2 to the material prepared in the step S3 is 1: 3.

Furthermore, when in use, the material prepared in the step S2, the material prepared in the step S3, the acrylic emulsion and the water are mixed according to the weight ratio of 1:3:2:1 to obtain the pasty powder for the energy-saving wall.

Compared with the prior art, the invention has the following beneficial effects:

(1) according to the invention, the surface of the hollow glass bead is modified by the silane coupling agent, so that the compatibility of the hollow glass bead with organic matters such as a sulfonated melamine formaldehyde resin water reducing agent, cellulose ether and starch ether is enhanced, and meanwhile, the silane coupling agent has an interaction force with a building base layer, so that the binding power of the hollow glass bead and the building base layer is enhanced.

(2) The powder for the energy-saving wall prepared by the invention contains the sulfonated melamine formaldehyde resin water reducing agent, and the sulfonated melamine formaldehyde resin water reducing agent is directionally adsorbed on the surfaces of the inorganic particles in the powder for the energy-saving wall, so that the inorganic particles in the powder for the energy-saving wall are mutually dispersed; the sulfonated melamine formaldehyde resin water reducing agent can form a solvation water film with water, effectively reduces the sliding resistance among inorganic particles in the powder for the energy-saving wall, and prevents hollow glass beads from being damaged.

(3) According to the invention, the cellulose ether is added into the powder material for the energy-saving wall, the cellulose ether is connected with the inorganic particles in the powder material for the energy-saving wall through the silane coupling agent, and the inorganic particles are filled among the cellulose ether molecules, so that the acid and alkali resistance of the powder material for the energy-saving wall is enhanced, and the prepared powder material for the energy-saving wall can be prepared into a paste to be coated on a roof to form an acid and alkali resistant layer, and can also be mixed with other substances to prepare a coating.

(4) The powder for the energy-saving wall prepared by the invention has the advantages of fine and smooth powder effect, good dispersibility, acid and alkali resistance, high viscosity, heat insulation, moisture resistance and the like, plays a role in heat insulation in summer, reduces the loss of an air conditioner, has a warm-keeping effect in winter, reduces the supply of warm air, and has energy-saving effects such as electric quantity saving and the like.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not a whole embodiment. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples 1-3 and comparative examples 1-3: preparing the powder for the energy-saving wall.

(1) Examples 1 to 3 and comparative examples 1 to 3 composition of powder for energy-saving wall.

TABLE 1 composition of powder for energy-saving walls in examples 1 to 3 and comparative examples 1 to 3 in parts by weight.

(2) Examples 1-3 preparation of powder for energy-saving walls.

S1, blending silane coupling agent, hollow glass beads and a small amount of deionized water according to parts by weight, performing ultrasonic treatment for 10 minutes, dropwise adding a sodium hydroxide solution to adjust the pH value to 10, heating and stirring at 50 ℃, continuously cleaning trichloroacetic acid/deionized water until the pH value of the solution is about 7, and obtaining surface-modified hollow glass beads for later use;

s2, adding the flatting agent, the thickening agent, the dispersing agent and the dimethyl silicone oil into a stirrer according to the parts by weight, stirring at a high speed of 1000 revolutions per minute for 10 minutes, then reducing the rotating speed to 300 revolutions per minute, adding the surface modified hollow glass beads prepared in the step S1, stirring for 10 minutes, reducing the rotating speed to 150 revolutions per minute, and stirring for 5 minutes to obtain a material for later use;

s3, adding gypsum powder, 200-mesh quartz powder, 400-mesh quartz powder, silica fume, white volcanic ash, organic silicon powder and calcium silicate powder into a stirring tank according to the parts by weight, stirring at a high speed of 1200 rpm for 30 minutes, sampling, measuring the temperature, adding wood fiber, waterproof latex powder, starch ether, a sulfonated melamine formaldehyde resin water reducer and cellulose ether when the temperature is lower than 35 ℃, and stirring at 1000 rpm for 5 minutes to obtain powder for the energy-saving wall;

s4, when in use, mixing the material prepared in the step S2 with the material prepared in the step S3 according to the weight ratio of 1:3 to obtain the powder for the energy-saving wall.

Comparative example 1

1 part by weight of the hollow glass bead of example 2 was replaced with 7 parts by weight of the hollow glass bead, and no silane coupling agent was added, and the remaining steps were unchanged.

Comparative example 2

1 part by weight of the silane coupling agent in example 2 was replaced with 7 parts by weight of the silane coupling agent, and the remaining steps were not changed without adding hollow glass beads.

Comparative example 3

0.2 part by weight of the sulfonated melamine formaldehyde resin water reducing agent of example 2 is replaced by 0.4 part by weight of the sulfonated melamine formaldehyde resin water reducing agent, no cellulose ether is added, and the rest steps are unchanged.

And (3) performance testing:

when the energy-saving wall powder is used, the material prepared in the step S2, the material prepared in the step S3, the acrylic emulsion and the water are mixed according to the weight ratio of 1:3:2:1 in the examples 1-3 and the comparative examples 1-3, and the mixture is stirred for 10 minutes at 300 revolutions per minute, so that the paste energy-saving wall powder is obtained.

The pasty powder for the energy-saving wall prepared in the examples 1-3 and the comparative examples 1-3 is respectively prepared into dry coating films with the thickness of 2mm in a blade coating mode, the dry coating films are coated on a cement mortar block, the peeling and bonding properties of the coating films are tested according to JG/T375 + 2012, the water resistance of the coating films is tested according to GB/T1733 + 1993, and the heat conductivity is tested by a heat conductivity tester HS-DR-5, wherein the test results are shown in Table 2.

Table 2 shows the results of the tests of the properties of the powders for energy-saving walls obtained in examples 1 to 3 and comparative examples 1 to 3.

As can be seen from Table 2, the powder for energy-saving walls prepared in examples 1 to 3 has the advantages of excellent fine and smooth powder effect, good dispersibility, acid and alkali resistance, high viscosity, heat insulation and moisture resistance.

Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that various changes and modifications can be made therein without departing from the scope of the invention as defined by the appended claims.