阅读说明：本技术 纳米隔热保温涂层、制备方法及其制备设备 (Nano heat insulation coating, preparation method and preparation equipment thereof ) 是由 李建华 侯道飞 于 2021-08-12 设计创作，主要内容包括：本发明涉及膏料技术领域,具体涉及纳米隔热保温涂层、制备方法及其制备设备,由水50～70份,气相二氧化硅5～8份,聚丙烯酰胺0.3～0.5份,膨胀土10～15份,中空微珠5～10份,硅类消泡剂0.05～0.1份,石英粉3～8份,纯丙乳液8～15份,α型半水石膏2～5份,白水泥3～5份,羟乙基甲基纤维素0.2～0.8份组成,利用膨润土、石英粉、半α型水石膏和合理的配备有效的提高了涂层的强度和干燥收缩率,利用气相二氧化硅、中空微珠和合理的配备有效的降低了涂层的导热系数,利用聚丙烯酰胺和羟乙基甲基纤维素有效的保证了涂层的前期粘度和后期保水的问题,以满足节能设计和防火规范,从而提高涂层的综合性能。(The invention relates to the technical field of paste materials, in particular to a nano heat-insulating coating, a preparation method and preparation equipment thereof, which are composed of 50-70 parts of water, 5-8 parts of fumed silica, 0.3-0.5 part of polyacrylamide, 10-15 parts of expansive soil, 5-10 parts of hollow micro-beads, 0.05-0.1 part of a silicon defoamer, 3-8 parts of quartz powder, 8-15 parts of pure acrylic emulsion, 2-5 parts of alpha-type semi-hydrated gypsum, 3-5 parts of white cement and 0.2-0.8 part of hydroxyethyl methyl cellulose, wherein the strength and the drying shrinkage of the coating are effectively improved by utilizing the bentonite, the quartz powder and the semi-alpha-type hydrated gypsum and reasonable preparation, the heat conductivity coefficient of the coating is effectively reduced by utilizing the fumed silica, the hollow micro-beads and the reasonable preparation, the early-stage viscosity and the later-stage water retention of the coating are effectively ensured by utilizing the polyacrylamide and the hydroxyethyl methyl cellulose, so as to meet the energy-saving design and fire-proof specifications, thereby improving the comprehensive performance of the coating.)

1. A nanometer heat insulation coating is characterized in that,

the feed comprises the following raw materials in parts by weight: 50-70 parts of water, 5-8 parts of fumed silica, 0.3-0.5 part of polyacrylamide, 10-15 parts of expansive soil, 5-10 parts of hollow microspheres, 0.05-0.1 part of silicon defoamer, 3-8 parts of quartz powder, 8-15 parts of pure acrylic emulsion, 2-5 parts of alpha-hemihydrate gypsum, 3-5 parts of white cement and 0.2-0.8 part of hydroxyethyl methyl cellulose.

2. The nano thermal insulation coating according to claim 1,

the expansive soil is over 200 meshes and has the water content of less than 0.2.

3. The nano thermal insulation coating according to claim 1,

the volume weight of the hollow micro-beads is 110kg/m³The closed-cell vitrified micro bubbles of (1).

4. The preparation method of the nano heat insulation coating as claimed in claim 1, which is characterized by comprising the following steps:

mixing and stirring 50-70 parts of water, 0.3-0.5 part of polyacrylamide, 0.2-0.8 part of hydroxyethyl methyl cellulose and 8-15 parts of pure acrylic emulsion to obtain a slurry film-forming slurry;

adding 5-8 parts of fumed silica into the slurry-forming film-forming slurry, and stirring in a closed manner for 5 minutes to obtain uniform slurry;

sequentially adding 10-15 parts of expansive soil and 3-8 parts of quartz powder into the uniform slurry, and stirring to obtain a paste;

and sequentially adding 5-10 parts of hollow microspheres and 0.05-0.1 part of silicon defoaming agent into the paste, and stirring to obtain the paste.

5. The method for preparing a nano thermal insulation coating according to claim 4,

the method comprises the following specific steps of mixing and stirring 50-70 parts of water, 0.3-0.5 part of polyacrylamide, 0.2-0.8 part of hydroxyethyl methyl cellulose and 8-15 parts of pure acrylic emulsion to obtain a slurry film-forming slurry:

adding 0.3-0.5 part of polyacrylamide and 0.2-0.8 part of hydroxyethyl methyl cellulose into 50-70 parts of water for stirring;

adding 8-15 parts of pure acrylic emulsion into water, and stirring at a high speed to form a mixture;

after stirring for 10 minutes, the mixture was slurried and lifted up with a stick to form a mirror surface to obtain a slurry-forming film-forming slurry.

6. The method for preparing a nano thermal insulation coating according to claim 4,

the method comprises the following specific steps of sequentially adding 10-15 parts of expansive soil and 3-8 parts of quartz powder into uniform slurry and stirring to obtain paste:

adding 10-15 parts of expansive soil into the uniform slurry, stirring for 5 minutes, and cooling for 5 minutes;

and adding 3-8 parts of quartz powder into the uniform slurry, and stirring for 5 minutes to form paste.

7. A production apparatus for the production method of the nano thermal insulation coating layer according to claim 4,

the preparation equipment is including preparation case, stirring structure and case lid, the case lid with the preparation case is dismantled and is connected, the case lid is located the top of preparation case, the stirring structure includes motor and puddler, motor fixed mounting be in the inside of preparation case, the puddler with the output fixed connection of motor.

Technical Field

The invention relates to the technical field of paste materials, in particular to a nano heat insulation coating, a preparation method and preparation equipment thereof.

Background

Along with the gradual improvement of national carbon emission standards, the energy-saving design requirements of buildings are also improved, the performance indexes of the current heat-insulating inorganic heat-insulating paste materials in the market are that the dry density of the paste materials is large and is basically between 280 plus materials and 300kg/m3, the heat conductivity coefficient is basically about 0.055-0.060W/m.K, the drying shrinkage rate is large, the cracking and hollowing of the wall surface are easily caused due to the overlarge thickness of one-time coating, and the alkali return phenomenon is easily generated at the position with moist air, so that the attractiveness and the heat-insulating effect are influenced.

Due to the high heat conductivity coefficient, the existing energy-saving design requirements are difficult to meet, the existing energy-saving calculation needs to be added with conditions such as equivalent thermal resistance, additional thermal resistance and special calculation formats, and the existing design specifications and requirements can be met.

Disclosure of Invention

The invention aims to provide a nanometer thermal insulation coating for a special thermal insulation material for a wall, a preparation method and preparation equipment thereof, so as to meet energy-saving design and fire-proof specifications and improve the comprehensive performance of the coating.

In order to achieve the purpose, the invention provides a nano heat insulation coating which comprises the following raw materials in parts by weight: 50-70 parts of water, 5-8 parts of fumed silica, 0.3-0.5 part of polyacrylamide, 10-15 parts of expansive soil, 5-10 parts of hollow microspheres, 0.05-0.1 part of silicon defoamer, 3-8 parts of quartz powder, 8-15 parts of pure acrylic emulsion, 2-5 parts of alpha-hemihydrate gypsum, 3-5 parts of white cement and 0.2-0.8 part of hydroxyethyl methyl cellulose.

Wherein the expansive soil is over 200 meshes and has a water content of less than 0.2.

Wherein the hollow micro-bead has a volume weight of 110kg/m³The closed-cell vitrified micro bubbles of (1).

The invention also provides a preparation method of the nanometer heat insulation coating, which comprises the following steps:

mixing and stirring 50-70 parts of water, 0.3-0.5 part of polyacrylamide, 0.2-0.8 part of hydroxyethyl methyl cellulose and 8-15 parts of pure acrylic emulsion to obtain a slurry film-forming slurry;

adding 5-8 parts of fumed silica into the slurry-forming film-forming slurry, and stirring in a closed manner for 5 minutes to obtain uniform slurry;

sequentially adding 10-15 parts of expansive soil and 3-8 parts of quartz powder into the uniform slurry, and stirring to obtain a paste;

and sequentially adding 5-10 parts of hollow microspheres and 0.05-0.1 part of silicon defoaming agent into the paste, and stirring to obtain the paste.

The method comprises the following specific steps of mixing and stirring 50-70 parts of water, 0.3-0.5 part of polyacrylamide, 0.2-0.8 part of hydroxyethyl methyl cellulose and 8-15 parts of pure acrylic emulsion to obtain a slurry film-forming slurry:

adding 0.3-0.5 part of polyacrylamide and 0.2-0.8 part of hydroxyethyl methyl cellulose into 50-70 parts of water for stirring;

adding 8-15 parts of pure acrylic emulsion into water, and stirring at a high speed to form a mixture;

after stirring for 10 minutes, the mixture was slurried and lifted up with a stick to form a mirror surface to obtain a slurry-forming film-forming slurry.

The method comprises the following steps of adding 10-15 parts of expansive soil and 3-8 parts of quartz powder into uniform slurry in sequence, and stirring to obtain a paste:

adding 10-15 parts of expansive soil into the uniform slurry, stirring for 5 minutes, and cooling for 5 minutes;

and adding 3-8 parts of quartz powder into the uniform slurry, and stirring for 5 minutes to form paste.

The invention also provides preparation equipment for the preparation method of the nanometer thermal insulation coating, and the preparation equipment comprises a preparation box, a stirring structure and a box cover, wherein the box cover is detachably connected with the preparation box, the box cover is positioned above the preparation box, the stirring structure comprises a motor and a stirring rod, the motor is fixedly arranged in the preparation box, and the stirring rod is fixedly connected with the output end of the motor.

According to the nanometer thermal insulation coating, the preparation method and the preparation equipment thereof, the strength and the drying shrinkage rate of the coating are effectively improved by utilizing the bentonite, the quartz powder and the semi-alpha type water gypsum and reasonable preparation, the stability and the effectiveness of the coating are ensured, the heat conductivity coefficient of the coating is effectively reduced by utilizing the fumed silica, the hollow microspheres and the reasonable preparation, an effective thermal insulation effect is formed, the early-stage viscosity and the later-stage water retention of the coating are effectively ensured by utilizing the polyacrylamide and the hydroxyethyl methyl cellulose, the sufficient maintenance time is won for the coating, the stability and the effectiveness of various performance indexes of the coating are ensured, the energy-saving design and the fireproof standard are met, and the comprehensive performance of the coating is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a flow chart of a method for preparing a nano thermal insulation coating provided by the invention.

Fig. 2 is a flowchart of the detailed steps of step S100 provided by the present invention.

Fig. 3 is a flowchart of the detailed steps of step S300 provided by the present invention.

Fig. 4 is a flowchart of the specific steps of step S400 provided by the present invention.

FIG. 5 is a sectional view of an apparatus for preparing a nano thermal insulation coating according to the present invention.

1-preparing a box, 11-fixing ports, 2-stirring structures, 21-motors, 22-stirring rods, 3-box covers, 4-observation windows, 5-fixing components, 51-pressure springs and 52-fixing frames.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1 to 5, the present invention provides a nano thermal insulation coating, which comprises the following raw materials by weight: 50-70 parts of water, 5-8 parts of fumed silica, 0.3-0.5 part of polyacrylamide, 10-15 parts of expansive soil, 5-10 parts of hollow microspheres, 0.05-0.1 part of silicon defoamer, 3-8 parts of quartz powder, 8-15 parts of pure acrylic emulsion, 2-5 parts of alpha-hemihydrate gypsum, 3-5 parts of white cement and 0.2-0.8 part of hydroxyethyl methyl cellulose.

Further, the expansive soil is over 200 meshes and has the water content of less than 0.2;

the volume weight of the hollow micro-beads is 110kg/m³The closed-cell vitrified micro bubbles of (1).

Referring to fig. 1, the present invention further provides a method for preparing a nano thermal insulation coating, which specifically includes the following steps:

s100: mixing and stirring 50-70 parts of water, 0.3-0.5 part of polyacrylamide, 0.2-0.8 part of hydroxyethyl methyl cellulose and 8-15 parts of pure acrylic emulsion to obtain a slurry film-forming slurry;

s200: adding 5-8 parts of fumed silica into the slurry-forming film-forming slurry, and stirring in a closed manner for 5 minutes to obtain uniform slurry;

s300: sequentially adding 10-15 parts of expansive soil and 3-8 parts of quartz powder into the uniform slurry, and stirring to obtain a paste;

s400: and sequentially adding 5-10 parts of hollow microspheres and 0.05-0.1 part of silicon defoaming agent into the paste, and stirring to obtain the paste.

Referring to fig. 2, the specific steps of step S100 are:

s110: adding 0.3-0.5 part of polyacrylamide and 0.2-0.8 part of hydroxyethyl methyl cellulose into 50-70 parts of water for stirring;

s120: adding 8-15 parts of pure acrylic emulsion into water, and stirring at a high speed to form a mixture;

s130: after stirring for 10 minutes, the mixture was slurried and lifted up with a stick to form a mirror surface to obtain a slurry-forming film-forming slurry.

Referring to fig. 3, the specific steps of step S300 are:

s310: adding 10-15 parts of expansive soil into the uniform slurry, stirring for 5 minutes, and cooling for 5 minutes;

s320: and adding 3-8 parts of quartz powder into the uniform slurry, and stirring for 5 minutes to form paste.

Referring to fig. 4, the specific steps of step S400 are:

s410: adding 5-10 parts of hollow microspheres into the paste, and stirring for 5 minutes;

s420: and adding 0.05-0.1 part of silicon defoamer into the paste, stirring for 6 minutes to form paste, and performing barrel injection and packaging.

Example 1:

raw materials: 50 parts of water, 6 parts of fumed silica, 0.3 part of polyacrylamide, 12 parts of expansive soil, 10 parts of hollow microspheres, 0.05 part of a silicon defoamer, 5 parts of quartz powder, 12 parts of a pure acrylic emulsion, 3 parts of alpha-type semi-hydrated gypsum, 3 parts of white cement and 0.6 part of hydroxyethyl methyl cellulose.

Example 2:

raw materials: 70 parts of water, 8 parts of fumed silica, 0.5 part of polyacrylamide, 15 parts of expansive soil, 10 parts of hollow microspheres, 0.1 part of a silicon defoamer, 8 parts of quartz powder, 15 parts of a pure acrylic emulsion, 5 parts of alpha-type semi-hydrated gypsum, 5 parts of white cement and 0.8 part of hydroxyethyl methyl cellulose.

The performance indexes of the inorganic heat-insulating paste in the embodiment 1 and the embodiment 2 and the prior art are compared as shown in the table:

according to the test and the comparison results, the nanometer thermal insulation coating has the advantages of small dry density, low thermal conductivity coefficient, high strength, good thermal insulation effect and small drying shrinkage, and according to the components, the main solid components mainly comprise bentonite, quartz powder, fumed silica, hollow microspheres, gypsum and the like, so that the nanometer thermal insulation coating has the characteristics of fire resistance, flame retardance and good thermal insulation effect, and meanwhile, the coating is convenient to operate during construction, good in adaptability to basic wall surfaces and wide in market prospect. The coating has the advantages of small dry density, high strength, low heat conductivity coefficient, good heat preservation effect, good fireproof performance, small drying shrinkage and the like, can effectively overcome the defects of the existing paste system, cement-based inorganic heat preservation mortar system and integrated system part, effectively avoids the common defects of some heat insulation systems, meets the current energy-saving design specifications, promotes the prosperity and diversity of the heat insulation and heat preservation energy-saving market, effectively improves the strength and drying shrinkage rate of the coating by using bentonite, quartz powder, semi-alpha type water gypsum and reasonable preparation, ensures the stability and effectiveness of the coating, effectively reduces the heat conductivity coefficient of the coating by using fumed silica, hollow microspheres and reasonable preparation, forms effective heat preservation effect, effectively ensures the early-stage viscosity and later-stage water preservation of the coating by using polyacrylamide and hydroxyethyl methyl cellulose, sufficient maintenance time is won for the coating, and the stability and effectiveness of various performance indexes of the coating are ensured so as to meet the energy-saving design and fire-proof standard, thereby improving the comprehensive performance of the coating.

Referring to fig. 5, the present invention further provides a preparation apparatus for a preparation method of a nano thermal insulation coating, where the preparation apparatus includes a preparation box 1, a stirring structure 2 and a box cover 3, the box cover 3 is detachably connected to the preparation box 1, the box cover 3 is located above the preparation box 1, the stirring structure 2 includes a motor 21 and a stirring rod 22, the motor 21 is fixedly installed inside the preparation box 1, and the stirring rod 22 is fixedly connected to an output end of the motor 21;

the preparation equipment further comprises an observation window 4, wherein the observation window 4 is fixedly connected with the preparation box 1, and the observation window 4 is positioned at the top of the side surface of the preparation box 1;

the inside of case lid 3 is provided with fixed subassembly 5, preparation case 1 has fixed mouth 11, fixed subassembly 5 includes pressure spring 51 and mount 52, the both ends of pressure spring 51 respectively with case lid 3 with mount 52 offsets, mount 52 with case lid 3 sliding connection, the mount 52 is kept away from the one end of pressure spring 51 is located the inside of fixed mouth 11.

In this embodiment, the inside of the preparation box 1 is provided with scale marks, the box cover 3 and the preparation box 1 are fixed by the fixing component 5, the fixing frame 52 enters the fixing port 11 under the support of the pressure spring 51, so that the box cover 3 is fixed on the preparation box 1, when the box cover 3 needs to be detached, the fixing frame 52 is pulled to make the fixing frame 52 exit from the fixing port 11, so that the box cover 3 can be detached from the preparation box 1, the water level in the preparation box 1 is observed through the observation window 4 to keep the water between 50 parts and 70 parts, the motor 21 is fixedly installed inside the preparation box 1, the stirring rod 22 is fixedly connected with the output end of the motor 21, the motor 21 drives the stirring rod 22 to rotate for stirring, and 0.3 part to 0.5 part of polyacrylamide is sequentially added in the starting state of the motor 21, 0.2-0.8 part of hydroxyethyl methyl cellulose, finally, 8-15 parts of pure acrylic emulsion is added to be stirred at high speed, the mixture is stirred for about 10 minutes to form a slurry state, the motor 21 stops running, a worker picks up the slurry by using a rod body to form a mirror-like slurry to form a film-forming slurry, the motor 21 is started to continue stirring the film-forming slurry, 5-8 parts of fumed silica are added to the film-forming slurry, the preparation box 1 is closed through the box cover 3 and is stirred for 5 minutes in a closed mode, whether all the fumed silica are uniformly soaked in the film-forming slurry is checked through the observation window 4 to obtain uniform slurry, then the box cover 3 is taken away from the preparation box 1, 10-15 parts of expansive soil is added to the uniform slurry, stirring is carried out for 5 minutes to enable the expansive soil to be rolled fully and uniformly, then cooling is carried out for 5 minutes, and stirring is continued, adding 3-8 parts of quartz powder in the stirring process, stirring for 5 minutes to form paste, enabling the surface of the paste to be fine and glossy and be in the best state, adding 5-10 parts of hollow microspheres into the paste, closing the preparation box 1 through the box cover 3, carrying out closed stirring for 5 minutes, adding 0.05-0.1 part of silicon defoamer after stirring to prepare the paste, injecting into a barrel and packaging, adding 2-5 parts of alpha-type semi-hydrated gypsum or 3-5 parts of white cement when a coating needs to be sprayed on a wall, and uniformly stirring in the barrel for use and spraying. The coating is sprayed or smeared out 60 minutes after the alpha-hemihydrate gypsum is added and stirred uniformly, and the coating is sprayed or smeared out 180 minutes after the white cement is added and stirred uniformly.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.