A solar heat reflecting heat insulating coating and preparation method thereof

Abstract

The invention relates to the technical field of heat-insulating coatings, and more specifically to a solar heat-reflecting heat-insulating coating and a preparation method thereof. The invention comprises the following steps: first, grinding a solid raw material and then screening it to obtain a powder; second, continuously collecting the screened large-particle solid raw material and then continuously grinding it; third, mixing the liquid raw material according to a proportion and continuously stirring it; fourth, gradually adding the powder into the liquid raw material in a stirring state for mixing; and fifth, stirring the powder and the liquid raw material until they are in a uniform state to obtain a solar heat-reflecting heat-insulating coating. The raw materials of the solar heat-reflecting heat-insulating coating comprise: 1-3 parts of barium sulfate; 1-3 parts of talcum powder; 1-3 parts of heavy calcium carbonate; 1-3 parts of kaolin; 0.5-1 parts of a defoaming agent; 0.4-0.8 parts of an antifreeze agent; 0.5-0.8 parts of a film-forming aid; 0.8-1.2 parts of a thickener; 4-8 parts of a film-forming resin; and 1-3 parts of rutile titanium dioxide. The powder raw material can be gradually added into the liquid raw material while the liquid raw material is continuously stirred.

Description

Technical Field

[0001] The invention relates to the technical field of heat-insulating coatings, and more particularly to a solar heat-reflecting heat-insulating coating and a preparation method thereof. Background Art

[0002] Reflective heat-insulating coating is a coating with synthetic resin as the base material, functional pigments, fillers and additives, etc., and has high solar reflectance, near-infrared reflectance and hemispherical emissivity. In actual production, if a large amount of powder raw materials are directly put into liquid raw materials for mixing, it is easy for the liquid raw materials to cause the powder raw materials to agglomerate, which will cause the powder raw materials to be unable to be mixed with the liquid raw materials in a timely and uniform manner. In this case, the preparation time required will be longer. Therefore, in order to improve efficiency, the present application proposes a solar heat reflective heat-insulating coating and a preparation method thereof; the powder raw materials can be gradually added to the liquid raw materials while the liquid raw materials are continuously stirred to avoid the phenomenon of agglomeration of the powder raw materials. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a solar heat reflective heat insulating coating and a preparation method thereof, which can gradually add powder raw materials into liquid raw materials while continuously stirring the liquid raw materials, thereby avoiding agglomeration of the powder raw materials.

[0004] The technical solution adopted by the present invention to solve the technical problem is:

[0005] A method for preparing a solar heat reflective heat insulating coating, the method comprising the following steps:

[0006] Step 1: Grind the solid raw material and then sieve it to obtain powder;

[0007] Step 2: Collect the large solid particles of the sieved raw materials and continue grinding them;

[0008] Step 3: Mix the liquid raw materials according to the ratio and stir continuously;

[0009] Step 4: gradually add the powder to the liquid raw material in a stirring state to mix;

[0010] Step 5: Stir the powder and liquid raw materials until they are uniform to obtain solar heat reflective heat insulating coating.

[0011] The preparation device comprises a grinding disc rotatably connected to the side arm, a screw rod rotatably connected to the side arm, a crossbeam slidably connected to the side arm and driven to rise and fall by the screw rod, and a grinding sleeve fixedly connected to the crossbeam.

[0012] A blind hole is provided at the upper end of the grinding disc, a vertical rod is slidably connected in the blind hole, a flat rod is fixedly connected to the vertical rod, and a plurality of ridges for contacting the flat rod are evenly distributed at the upper end edge of the grinding sleeve.

[0013] The preparation device also includes a base for fixing the side arm, the base has a rotating shaft driven by a motor, the upper end of the rotating shaft is fixedly connected to a gear B, and the bottom end of the grinding disc is fixedly connected to a gear A meshing with the grinding disc.

[0014] The solar heat reflecting heat insulating coating is prepared by using the solar heat reflecting heat insulating coating preparation method. The raw materials of the solar heat reflecting heat insulating coating include: 1-3 parts of barium sulfate; 1-3 parts of talc; 1-3 parts of heavy calcium carbonate; 1-3 parts of kaolin; 0.5-1 parts of defoaming agent; 0.4-0.8 parts of antifreeze agent; 0.5-0.8 parts of film-forming aid; 0.8-1.2 parts of thickener; 4-8 parts of film-forming resin; 1-3 parts of rutile titanium dioxide. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0016] Figure 1 This is a flow chart of the method for preparing the solar heat reflective heat insulating coating of the present invention;

[0017] Figure 2 and Figure 3 All of them are structural schematic diagrams of the preparation device in the present invention;

[0018] Figure 4 It is a structural schematic diagram of the grinding disc in the present invention;

[0019] Figure 5 It is a structural schematic diagram of the vertical rod in the present invention;

[0020] Figure 6 It is a structural schematic diagram of the rotating shaft in the present invention;

[0021] Figure 7 It is a schematic diagram of the structure of the outer barrel in the present invention;

[0022] Figure 8 It is a schematic diagram of the structure of the screen in the present invention;

[0023] Fig. 9 It is a structural schematic diagram of the steel ball in the present invention;

[0024] Fig.10 It is a schematic diagram of the structure of the vertical ribs in the present invention;

[0025] In the figure: grinding disc 01; gear A 02; side arm 03; crossbeam 04; screw 05; grinding sleeve 06; vertical rod 07; flat rod 08; convex ridge 09; base 10; outer barrel 11; rotating shaft 12; spiral blade 13; friction wheel 14; intermediate wheel 15; friction ring 16; gear B 17; outer ring 18; steel ball 19; screen 20; vertical ridge 21. DETAILED DESCRIPTION

[0026] By observation Figure 1 According to the process shown in the figure, the method for preparing the solar heat reflective insulation coating can be obtained.

[0027] A method for preparing a solar heat reflective heat insulating coating, the method comprising the following steps:

[0028] Step 1: Grind the solid raw material and then sieve it to obtain powder;

[0029] Step 2: Collect the large solid particles of the sieved raw materials and continue grinding them;

[0030] Step 3: Mix the liquid raw materials according to the ratio and stir continuously;

[0031] Step 4: gradually add the powder to the liquid raw material in a stirring state to mix;

[0032] Step 5: Stirring the powder and the liquid raw material to a uniform state to obtain a solar heat reflective heat insulating coating;

[0033] By observation Figures 2 to 10 According to the figure, an exemplary working process of preheating the power wire is:

[0034] The preparation device comprises a grinding disc 01 rotatably connected to a side arm 03, a screw rod 05 rotatably connected to the side arm 03, a crossbeam 04 slidably connected to the side arm 03 and driven to rise and fall by the screw rod 05, and a grinding sleeve 06 fixedly connected to the crossbeam 04; during use, solid raw materials can be added from above the grinding sleeve 06 between the grinding sleeve 06 and the grinding disc 01, so that the solid raw materials enter between the grinding sleeve 06 and the grinding disc 01, and then the solid raw materials can be ground by the extrusion friction between the grinding disc 01 and the grinding sleeve 06 when the grinding disc 01 rotates to obtain powder;

[0035] Furthermore, by rotating the screw rod 05, the screw rod 05 can drive the crossbeam 04 to slide and rise and fall on the side arm 03, so that the crossbeam 04 can drive the grinding sleeve 06 to rise and fall, thereby changing the distance between the grinding sleeve 06 and the grinding disc 01, so as to grind powders of different fineness for use as needed.

[0036] By observation Figures 2 to 10An exemplary working process of accelerated grinding can be obtained as shown in the figure:

[0037] A blind hole is provided at the upper end of the grinding disc 01, in which a vertical rod 07 is slidably connected, a tension spring is fixedly connected between the blind hole and the vertical rod 07, a flat rod 08 is fixedly connected to the vertical rod 07, and a plurality of ridges 09 for contacting the flat rod 08 are evenly distributed at the upper edge of the grinding sleeve 06; when the grinding disc 01 rotates, the grinding disc 01 can be used to drive the vertical rod 07 to rotate, and the vertical rod 07 can be used to drive the flat rod 08 to rotate around the axis of the grinding sleeve 06, and the flat rod 08 can be used to contact the plurality of ridges 09 in sequence, so that the flat rod 08 can hit the plurality of ridges 09 to vibrate the grinding sleeve 06, and the vibration of the grinding sleeve 06 can accelerate the solid raw material to enter between the grinding disc 01 and the grinding sleeve 06, and at the same time, the vibration can be used to accelerate the falling of the ground powder, so as to avoid powder blockage and solid raw material blockage between the grinding disc 01 and the grinding sleeve 06.

[0038] By observation Figures 2 to 10 According to the figure, an exemplary working process of power input can be obtained as follows:

[0039] The preparation device also includes a base 10 for fixing the side arm 03, and a rotating shaft 12 is driven by a motor on the base 10, a gear B17 is fixedly connected to the upper end of the rotating shaft 12, and a gear A02 meshing with the grinding disc 01 is fixedly connected to the bottom end of the grinding disc 01; when in use, it is only necessary to drive the rotating shaft 12 to rotate by the motor, and use the rotating shaft 12 to drive the gear B17 to rotate, so that the gear B17 meshes and drives the gear A02 to rotate, and the gear A02 drives the grinding disc 01 to rotate, thereby realizing the grinding of the solid raw material.

[0040] By observation Figures 2 to 10 According to the figure, an exemplary working process of stirring the raw materials is:

[0041] The base 10 is rotatably connected to an outer barrel 11, a rotating shaft 12 is rotatably connected to the middle of the base 10, and a spiral blade 13 is fixedly connected to the rotating shaft 12; when the rotating shaft 12 rotates, the spiral blade 13 on the rotating shaft 12 drives the raw materials between the outer barrel 11 and the base 10 to turn over and mix, thereby achieving uniform stirring of the raw materials;

[0042] The base 10 is connected with a valve for discharging materials; the mixed paint in the outer barrel 11 can be taken out through the valve.

[0043] By observation Figures 2 to 10 According to the figure, an exemplary working process for improving stirring efficiency is:

[0044] The lower end of the rotating shaft 12 is fixedly connected with a friction wheel 14, the base 10 is rotatably connected with an intermediate wheel 15 that is frictionally driven by the friction wheel 14, and the bottom end of the outer barrel 11 is fixedly connected with a friction ring 16 that is frictionally driven by the intermediate wheel 15; during use, when the rotating shaft 12 rotates to drive the spiral blade 13 to stir the raw materials, the friction wheel 14 can be used to drive the intermediate wheel 15 to rotate, and the friction of the intermediate wheel 15 drives the friction ring 16 and the outer barrel 11 to rotate, and the outer barrel 11 and the rotating shaft 12 have opposite rotation directions, which can increase the driving effect on the raw materials in the horizontal direction, so that the raw materials can be mixed in more flow directions, thereby improving the mixing efficiency of the raw materials.

[0045] By observation Figures 2 to 10 An exemplary working process for obtaining sieved powder as shown in the figure is:

[0046] An inclined screen 20 is fixedly connected to the upper end of the outer barrel 11, and the screen 20 is located below the grinding sleeve 06. The rotating shaft 12 passes through the screen 20 and is rotatably connected. When the powder falling from the grinding sleeve 06 falls on the screen 20, the inclined screen 20 can be used to guide the powder to slide, so as to screen the ground powder, so that large particles of powder are screened out, and small particles leak from the screen 20 into the outer barrel 11, thereby improving the fineness of the powder mixed into the liquid raw material and improving the quality of the prepared coating.

[0047] By observation Figures 2 to 10 According to the figure, an exemplary working process for improving screening efficiency is:

[0048] A plurality of vertical edges 21 are distributed at the bottom end of the screen 20, an outer ring 18 is fixedly connected to the upper side of the rotating shaft 12, and a steel ball 19 that can contact the plurality of vertical edges 21 is fixedly connected to the outer ring 18 through a spring; when the rotating shaft 12 rotates, the outer ring 18 on the rotating shaft 12 drives the steel ball 19 to rotate around the rotating shaft 12, and the steel ball 19 contacts the plurality of vertical edges 21 to cause the screen 20 to vibrate, thereby increasing the flowability of the powder being screened on the screen 20, preventing the powder from clogging the sieve holes on the screen 20, and also accelerating the sliding speed of the powder along the screen 20, preventing the powder from accumulating on the screen 20.

[0049] The solar heat reflecting heat insulating coating is prepared by using the solar heat reflecting heat insulating coating preparation method. The raw materials of the solar heat reflecting heat insulating coating mainly include: 1 part of barium sulfate; 1 part of talcum powder; 1 part of heavy calcium carbonate; 1 part of kaolin; 0.5 part of defoaming agent; 0.4 part of antifreeze agent; 0.5 part of film-forming aid; 0.8 part of thickener; 4 parts of film-forming resin; and 1 part of rutile titanium dioxide.

Claims

1. A coating preparation device, characterized in that: The preparation device comprises a grinding disc (01) rotatably connected to a side arm (03), a screw rod (05) rotatably connected to the side arm (03), a crossbeam (04) slidably connected to the side arm (03) and driven to rise and fall by the screw rod (05), and a grinding sleeve (06) fixedly connected to the crossbeam (04); a blind hole is provided at the upper end of the grinding disc (01), a vertical rod (07) is slidably connected in the blind hole, a flat rod (08) is fixedly connected to the vertical rod (07), and a plurality of ridges (09) for contacting the flat rod (08) are evenly distributed at the upper edge of the grinding sleeve (06); The preparation device further comprises a base (10) for fixing the side arm (03), a rotating shaft (12) driven by a motor is disposed on the base (10), a gear B (17) is fixedly connected to the upper end of the rotating shaft (12), and a gear A (02) meshing with the grinding disc (01) is fixedly connected to the lower end of the grinding disc (01); The base (10) is rotatably connected to an outer barrel (11), a rotating shaft (12) is rotatably connected to the middle of the base (10), and a spiral blade (13) is fixedly connected to the rotating shaft (12); The lower end of the rotating shaft (12) is fixedly connected to a friction wheel (14); the base (10) is rotatably connected to an intermediate wheel (15) that is frictionally driven with the friction wheel (14); and the bottom end of the outer barrel (11) is fixedly connected to a friction ring (16) that is frictionally driven with the intermediate wheel (15); The upper end of the outer barrel (11) is fixedly connected with an inclined screen (20), the screen (20) is located below the grinding sleeve (06), and the rotating shaft (12) passes through the screen (20) and is rotatably connected; The bottom of the screen (20) is provided with a plurality of vertical edges (21), the upper side of the rotating shaft (12) is fixedly connected with an outer ring (18), and the outer ring (18) is fixedly connected with a steel ball (19) capable of contacting the plurality of vertical edges (21) via a spring; The base (10) is connected with a valve for discharging materials.

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