A flexible phase-change temperature control decorative plate and a preparation method and application thereof

Abstract

The present application belongs to the technical field of phase change temperature control materials, and provides a flexible phase change temperature control decorative plate and a preparation method and application thereof.The flexible phase change temperature control decorative plate comprises, from outside to inside, a decorative panel layer and a phase change temperature control layer.The decorative panel layer comprises a water-based polymer emulsion, inorganic gel material and heat-conducting filler A, and the heat-conducting filler A comprises boron nitride.The phase change temperature control layer comprises a water-based polymer emulsion, inorganic gel material, heat-conducting filler B and phase change microcapsules, and the heat-conducting filler B comprises expanded graphite.The glass transition temperature of the water-based polymer emulsion is -10 DEG C to 25 DEG C.The decorative panel layer and the phase change temperature control layer are combined to achieve a good energy-saving temperature control effect, and the power consumption can be saved by 28.8% to 60.7%.The flexible phase change temperature control decorative plate has moderate flexibility, can be installed in various positions, has high practicability, is convenient to install, has adjustable decoration effect and has wide application range.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of temperature control materials, more particularly, to a flexible phase change temperature control decorative panel and a preparation method and application thereof. BACKGROUND

[0002] Building energy consumption accounts for 1 / 3 of the total energy consumption in China, and the energy consumption of heating and air conditioning accounts for more than 65% of the building energy consumption. Therefore, reducing the energy consumption of heating and air conditioning is of great significance to building energy saving. The composite application of phase change materials and building decoration materials to indoor walls, ceilings, floors, columns, exhibition stands, etc. can delay the change of indoor temperature and reduce the running time of heating and air conditioning by using the energy storage effect of phase change materials, thereby reducing energy consumption. There are many applications of phase change materials in the building field to adjust temperature and reduce energy consumption, such as phase change insulation boards, phase change coatings, etc. Chinese patent CN113185218A discloses a composite phase change insulation board, which uses fluidized bed technology to use one or more of n-dodecane, n-pentadecane, n-hexadecane, n-octadecane, n-nonadecane, n-eicosane, paraffin and natural fatty acid mixture as phase change material to prepare phase change microcapsules, and apply them to the composite insulation board. However, this composite insulation board has a too wide temperature regulation range (10-90℃) and is not suitable for indoor temperature regulation. Chinese patent CN113462291A discloses a phase change microcapsule building thermal insulation coating, which uses in-situ polymerization to prepare phase change microcapsules, which can be uniformly dispersed in the coating and also impart certain mechanical properties to the coating. However, the addition amount of phase change microcapsules is 1-5% of the mass of the coating, and the content of phase change microcapsules is very small, which has little effect on temperature regulation and energy saving.

[0003] Therefore, there is an urgent need to develop a building material decorative panel suitable for indoor use, which has phase change temperature control performance, and has significant energy saving effect while playing a decorative role. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a flexible phase change temperature control decorative panel and a preparation method and application thereof. The flexible phase change temperature control decorative panel of the present application has moderate flexibility, can meet the paving requirements of different positions, not only plays a decorative role, but also achieves good temperature control and energy saving effect, at least saves 28.8% of the electricity consumption, and even saves up to 60.7% of the electricity consumption.

[0005] The first aspect of the present application provides a flexible phase change temperature control decorative panel.

[0006] Specifically, a flexible phase change temperature control decorative panel comprises, from outside to inside, a decorative panel layer and a phase change temperature control layer; raw material components for preparing the decorative panel layer comprise a water-based polymer emulsion, inorganic gel material and heat-conducting filler A, wherein the heat-conducting filler A comprises boron nitride; raw material components for preparing the phase change temperature control layer comprise a water-based polymer emulsion, inorganic gel material, heat-conducting filler B and phase change microcapsules, wherein the heat-conducting filler B comprises expanded graphite; the glass transition temperature of the water-based polymer emulsion is -10℃-25℃.

[0007] The flexible phase change temperature control decorative panel of the present application comprises, from outside to inside, a decorative panel layer and a phase change temperature control layer. The decorative panel layer is the outermost layer and is directly seen by people, thus playing a decorative role in appearance. White boron nitride with good heat-conducting performance is introduced into the decorative panel layer, which not only does not affect the color effect diversity of the decorative panel, but also helps to accelerate the energy transfer between indoor heat and the phase change temperature control layer. The phase change microcapsules in the phase change temperature control layer can actively absorb and release phase change latent heat, effectively utilize the time difference heat energy inside the building, make the indoor temperature of the building more stable, and be suitable for living and office work, etc., thus achieving the effect of energy saving and environmental protection. The expanded graphite with heat-conducting and adsorbing effects is added into the phase change temperature control layer, part of which is uniformly distributed inside the phase change temperature control layer, and part of which is adsorbed in the capillary pores formed after the hydration of the inorganic gel material, and forms numerous heat-conducting channels, thus improving the overall heat-conducting coefficient of the inorganic gel material. When the indoor temperature rises or falls, the expanded graphite and numerous heat-conducting channels embedded in the phase change temperature control layer accelerate the energy transfer between the indoor and the phase change microcapsules, so that the temperature quickly and smoothly stays in a comfortable interval range, thus achieving the effect of temperature control. The present application utilizes the combination of the decorative panel layer and the phase change temperature control layer to achieve the effect of good energy saving and temperature control. In addition, the water-based polymer emulsion with specific glass transition temperature is also introduced into the decorative panel layer and the phase change temperature control layer. The polymer in the emulsion is combined with the inorganic gel material, which can also increase the toughness and tensile strength of the inorganic gel material. The flexibility of the panel can be adjusted by controlling the amount of the water-based polymer emulsion, which is convenient for its application in different decoration parts.

[0008] Preferably, the raw material components for preparing the decorative panel layer comprise, by weight, 10-35 parts of water-based polymer emulsion, 5-30 parts of inorganic gel material and 20-30 parts of heat-conducting filler A.

[0009] Preferably, the raw material components for preparing the phase change temperature control layer comprise, by weight, 10-40 parts of water-based polymer emulsion, 10-30 parts of inorganic gel material, 20-30 parts of heat-conducting filler B and 30-70 parts of phase change microcapsules.

[0010] Preferably, the raw material components for preparing the decorative panel layer further comprise ordinary fillers, auxiliaries, pigments and water.

[0011] Preferably, the raw material components for preparing the decorative panel layer further include 30-50 parts of common fillers, 1-5 parts of additives, 0-15 parts of pigments, and 8-12 parts of water by weight.

[0012] Preferably, the raw material components for preparing the phase change temperature control layer further include common fillers, additives, and water.

[0013] Preferably, the raw material components for preparing the phase change temperature control layer further include 20-30 parts of common fillers, 1-5 parts of additives, and 8-12 parts of water by weight.

[0014] Preferably, the inorganic gel material is one or more of gypsum, cement, calcium hydroxide, and water glass.

[0015] Preferably, the water-based polymer emulsion is one or more of water-based acrylic resin, modified acrylic resin, ethylene-vinyl acetate copolymer, water-based polyurethane, and water-based epoxy resin.

[0016] Preferably, the glass transition temperature of the water-based polymer emulsion is -10℃ to -6℃.

[0017] Preferably, the phase change microcapsule is a paraffin phase change microcapsule.

[0018] Preferably, the energy storage density of the paraffin phase change microcapsule is 120-140 J / g.

[0019] Preferably, the phase change temperature of the paraffin phase change microcapsule is 25-28℃. This phase change temperature range is not too wide and is suitable for indoor use.

[0020] Preferably, the particle size of the paraffin phase change microcapsule is 40-200 μm.

[0021] Preferably, the heat-conducting filler A further includes expanded graphite.

[0022] Preferably, the heat-conducting filler B further includes boron nitride.

[0023] Preferably, the common fillers are one or more of heavy calcium carbonate (heavy calcium), kaolin, quartz sand, and bentonite.

[0024] Preferably, the pigments are one or more of iron red, iron yellow, iron black, diketopyrrolopyrrole (DPP), titanium cyanine blue, titanium cyanine green, titanium dioxide, and carbon black.

[0025] Preferably, the additives are one or more of film-forming additives, defoaming agents, water-reducing agents, anti-cracking short fibers, wetting agents, bactericides, and thickening agents.

[0026] Preferably, the film-forming additives are alcohol ester 12 and / or ethylene glycol monobutyl ether.

[0027] Preferably, the defoaming agent is one or two of silicone defoaming agent, vegetable oil defoaming agent, and polyether defoaming agent.

[0028] Preferably, the water reducing agent is naphthalene series water reducing agent and / or polycarboxylic acid type water reducing agent.

[0029] Preferably, the wetting agent is polyoxyethylene alkyl phenyl ether and / or sodium dodecyl sulfate.

[0030] Preferably, the bactericide is one or two of 5-chloro-2-methyl-4-isothiazolin-3-one (CIT), methylisothiazolinone (MIT), or 1,2-benzisothiazolin-3-one (BIT).

[0031] Preferably, the thickening agent is alkali-swellable thickening agent and / or cellulose-based thickening agent.

[0032] Preferably, the cellulose-based thickening agent is hydroxypropyl methyl cellulose.

[0033] Preferably, the flexible phase change temperature control decorative panel further comprises a reinforcing layer and a heat insulation layer, and the flexible phase change temperature control decorative panel comprises, from outside to inside, a decorative panel layer, a reinforcing layer, a phase change temperature control layer, and a heat insulation layer.

[0034] Preferably, the reinforcing layer is a glass fiber reinforcing layer.

[0035] Preferably, the raw material for preparing the glass fiber reinforcing layer comprises a medium alkali glass fiber mesh cloth.

[0036] Preferably, the medium alkali glass fiber mesh cloth has a dosage of 40-120 g / m 2 .

[0037] Preferably, the heat insulation layer is a fiber-reinforced fumed silica aerogel composite sheet containing a coating.

[0038] Preferably, the fiber-reinforced fumed silica aerogel composite sheet containing a coating has a thermal conductivity of less than 0.025 w / m·k at 25℃.

[0039] Preferably, the raw material components for preparing the coating comprise a polymer cement and perlite.

[0040] Preferably, the heat insulation layer is in direct contact with the surface of the object to be decorated.

[0041] The present application adds a heat insulation layer in the flexible phase change temperature control decorative plate, wherein the heat insulation layer is a coated fiber reinforced fumed silica aerogel composite sheet with a thermal conductivity less than 0.025 w / m·k, which can prevent heat transfer between the phase change temperature control layer and the external wall or the floor roof, so that heat exchange is only possible in the room, thereby further improving the temperature control effect of the flexible phase change temperature control decorative plate.

[0042] The second aspect of the present application provides a preparation method of a flexible phase change temperature control decorative plate.

[0043] A preparation method of a flexible phase change temperature control decorative plate, comprising the following steps:

[0044] The raw material components of the decorative panel layer and the phase change temperature control layer are used to prepare the decorative panel layer slurry and the phase change temperature control layer slurry, respectively, and then the decorative panel layer slurry is coated on the mold first, followed by the phase change temperature control layer slurry, to prepare the flexible phase change temperature control decorative plate.

[0045] Preferably, the flexible phase change temperature control decorative plate comprises, from outside to inside, a decorative panel layer, a reinforcing layer, a phase change temperature control layer, and a heat insulation layer, and the preparation method of the flexible phase change temperature control decorative plate comprises the following steps:

[0046] (1) placing a mold on a conveying platform;

[0047] (2) mixing the raw material components of the decorative panel layer to prepare a decorative panel layer slurry, and spraying or scraping the slurry into the cavity of the mold to prepare a decorative panel layer;

[0048] (3) then placing the raw material components of the reinforcing layer in the cavity of step (2) to prepare a reinforcing layer;

[0049] (4) mixing the raw material components of the phase change temperature control layer to prepare a phase change temperature control layer slurry, and pouring the slurry on the raw material of the reinforcing layer of step (3) and vibrating for 10-15 s to prepare a phase change temperature control layer;

[0050] (5) placing the raw material components of the heat insulation layer, flattening, and vibrating for 10-15 s to prepare a heat insulation layer;

[0051] (6) curing for 14-36 h and demolding to form the flexible phase change temperature control decorative plate.

[0052] Preferably, the mold is one of a textured mold or a flat mold.

[0053] Preferably, the texture depth of the mold is 0.3-0.5 mm.

[0054] Preferably, the curing temperature is 35-80℃.

[0055] Preferably, the curing time is 18-24h.

[0056] The third aspect of the present application provides a flexible phase change temperature control decorative panel.

[0057] The application of a flexible phase change temperature control decorative panel in building materials.

[0058] Preferably, the building material is one or more of a wall decorative panel, a ceiling decorative panel, a floor decorative panel, a column decorative panel, and an exhibition stand decorative panel.

[0059] Preferably, the flexible phase change temperature control decorative panel is a wall decorative panel, the thickness of the decorative panel layer of the flexible phase change temperature control decorative panel is 0.4-1mm, the phase change temperature control layer is 2-3mm, and the thermal insulation layer is 0.5-3mm.

[0060] Preferably, the flexible phase change temperature control decorative panel is a ceiling decorative panel, the thickness of the decorative panel layer of the flexible phase change temperature control decorative panel is 0.4-1mm, the phase change temperature control layer is 1-3cm, and the thermal insulation layer is 0.5-6mm.

[0061] Compared with the prior art, the present application has the following beneficial effects:

[0062] (1) The flexible phase change temperature control decorative panel of the present application comprises a decorative panel layer and a phase change temperature control layer, the raw material components of the decorative panel layer include a water-based polymer emulsion, an inorganic gel material, and a heat-conducting filler A, the raw material components of the phase change temperature control layer include a water-based polymer emulsion, an inorganic gel material, a heat-conducting filler B, and phase change microcapsules, and the glass transition temperature of the water-based polymer emulsion is limited to -10℃-25℃, the combination of the decorative panel layer and the phase change temperature control layer achieves a good energy-saving temperature control effect, at least 28.8% of the electricity consumption can be saved, and even up to 60.7% of the electricity consumption can be saved, and the flexibility of the flexible phase change temperature control decorative panel is moderate.

[0063] (2) The flexible phase change temperature control decorative panel provided by the present application has moderate flexibility and excellent temperature control performance, can be made into different thicknesses and sizes to be applied in building engineering, can be installed on various positions such as walls, ceilings, floors, columns, and exhibition stands, has strong practicability, is convenient to install, has adjustable decoration effect, has wide application range, has remarkable energy-saving effect, can greatly reduce indoor energy consumption, can maintain the indoor environment at a relatively comfortable environment (25-28℃) for a long time with small electricity input in winter and summer. BRIEF DESCRIPTION OF DRAWINGS

[0064] Figure 1 The cross-sectional view of the flexible phase change temperature control decorative panel prepared in Example 1 of the present application. DETAILED DESCRIPTION

[0065] In order to make the skilled in the art more clearly understand the technical solutions described in the present application, the following examples are listed for illustration. It should be pointed out that the following examples do not constitute a limitation on the scope of protection required by the present application.

[0066] The raw materials, reagents or devices used in the following examples, unless otherwise specified, can be obtained from conventional commercial channels or can be obtained by existing known methods.

[0067] The main raw materials used in the following examples and comparative examples are as follows:

[0068] Paraffin phase change microcapsules: Model TH-ME25 or TH-ME28, purchased from Hubei Saimei;

[0069] Water-based acrylic resin emulsion: Acrylic polymers and emulsions with glass transition temperatures of -10-25℃ are available;

[0070] Boron nitride: Powdered boron nitride, Suzhou Napo Material Technology Co., Ltd.;

[0071] Medium alkali glass fiber mesh: ARNP5x5-100L (40-80) g / m 2 , Hui'erjie New Material Technology Co., Ltd.;

[0072] Fiber-reinforced silica aerogel composite sheet with coating: Model FRA-PC350, Fanyu Yigui Composite Material Co., Ltd.

[0073] Example 1

[0074] A flexible phase change temperature control decorative panel, from outside to inside, includes a decorative panel layer, a reinforcing layer, a phase change temperature control layer, and a thermal insulation layer;

[0075] The raw materials for preparing the decorative panel layer include the following components by weight:

[0076] Gypsum 5 parts, water-based acrylic resin emulsion 10 parts (glass transition temperature -10℃), boron nitride 30 parts, 325 mesh heavy calcium 30 parts, polycarboxylic acid water reducer 1 part, silicone defoaming agent 2 parts, tartaric acid 0.2 parts, titanium white 5 parts, water 8 parts;

[0077] The raw materials for preparing the phase change temperature control layer include the following components by weight:

[0078] Gypsum 5 parts, water-based acrylic resin emulsion 10 parts (glass transition temperature -10℃), paraffin phase change microcapsules 30 parts (phase change temperature 25℃, energy storage density 120 J / kg), expanded graphite 20 parts, kaolin 20 parts, tartaric acid 0.2 parts, defoaming agent 2 parts, titanium white 2 parts, water 8 parts;

[0079] The reinforcing layer is a medium alkali glass fiber mesh with a mass of 40 g / m2 ;

[0080] The thermal insulation layer is a coated fiber-reinforced silica aerogel composite sheet, and the thermal conductivity coefficient at 25 DEG C is less than 0.025 w / (m*k).

[0081] The preparation method of the flexible phase change temperature control decorative plate comprises the following steps:

[0082] (1) placing a set size plane mold on a standard conveying platform;

[0083] (2) after the raw material components are mixed, stirred and dispersed at high speed according to the proportion, a decorative panel layer slurry is prepared, the decorative panel layer slurry is sprayed into the film cavity, the spraying thickness is 0.4 mm, and the decorative panel layer is prepared;

[0084] (3) placing 40 g / m 2 of glass fiber grid reinforced cloth and scraping flat to prepare a reinforcing layer;

[0085] (4) mixing the raw material components according to the proportion to prepare a phase change temperature control layer slurry, pouring the phase change temperature control layer slurry 2 mm, and vibrating for 10 s to prepare a phase change temperature control layer;

[0086] (5) placing 0.5 mm thick coated fumed silica composite sheet, pressing flat and vibrating for 10 s to prepare a thermal insulation layer;

[0087] (6) demolding to form a flexible phase change temperature control decorative plate after curing at a standard temperature of 35 DEG C for 14 h.

[0088] The cross-sectional view of the flexible phase change temperature control decorative plate prepared in the embodiment 1 is shown in Figure 1 , which comprises from outside to inside: 100, a decorative panel layer, 200, a reinforcing layer, 300, a phase change temperature control layer, and 400, a thermal insulation layer, the thermal insulation layer can be directly contacted with a to-be-decorated object, such as a wall surface, and the decorative panel layer is directly exposed to the indoor environment and can be seen by people.

[0089] Embodiment 2

[0090] A flexible phase change temperature control decorative plate comprises from outside to inside: a decorative panel layer, a reinforcing layer, a phase change temperature control layer, and a thermal insulation layer.

[0091] The raw materials for preparing the decorative panel layer comprise the following components in parts by weight:

[0092] 5 parts of calcium hydroxide, 10 parts of modified acrylic resin (glass transition temperature -6 DEG C), 30 parts of boron nitride, 30 parts of heavy calcium carbonate of 325 mesh, 1 part of polycarboxylic acid, 2 parts of silicone defoaming agent, 0.2 parts of tartaric acid, 5 parts of titanium white, and 10 parts of water;

[0093] The raw materials for preparing the phase change temperature control layer include the following components by weight:

[0094] 5 parts of calcium hydroxide, 10 parts of water-based polyurethane emulsion (glass transition temperature -6℃), 30 parts of paraffin phase change microcapsules (phase change temperature 25℃, energy storage density 130J / kg), 20 parts of expanded graphite, 20 parts of bentonite, 2 parts of silicone defoaming agent, 2 parts of iron red, 10 parts of water;

[0095] The reinforcing layer is a medium alkali glass fiber mesh cloth with a mass of 60g / m 2 ;

[0096] The thermal insulation layer is a coated fiber-reinforced silica aerogel composite sheet with a thermal conductivity of 0.025w / (m·k) at 25℃.

[0097] The preparation method of the flexible phase change temperature control decorative panel includes the following steps:

[0098] (1) Place a set size flat mold on a standard conveying platform;

[0099] (2) Mix the raw material components according to the proportion to prepare the decorative panel layer slurry, spray the decorative panel layer slurry into the film cavity, and the spraying thickness is 0.4mm, to prepare;

[0100] (3) Place a glass fiber mesh reinforcing cloth with a mass of 60g / m 2 and scrape it flat to prepare the reinforcing layer;

[0101] (4) Mix the raw material components according to the proportion to prepare the phase change temperature control layer slurry, pour the phase change temperature control layer slurry 2.0mm, and vibrate for 12s to prepare the phase change temperature control layer slurry;

[0102] (5) Place a 1.8mm thick coated fumed silica composite sheet, press it flat and vibrate for 12s to prepare the thermal insulation layer;

[0103] (6) After curing at a standard temperature of 35℃ for 25h, demold to form a flexible phase change temperature control decorative panel.

[0104] Example 3

[0105] A flexible phase change temperature control decorative panel includes, from outside to inside, a decorative panel layer, a reinforcing layer, a phase change temperature control layer, and a thermal insulation layer;

[0106] The raw materials for preparing the decorative panel layer include the following components by weight:

[0107] 30 parts of water glass, 10 parts of water-based epoxy resin (glass transition temperature -8℃), 10 parts of boron nitride, 30 parts of kaolin, 1 part of anti-cracking fiber, 2 parts of silicone defoaming agent, 0.2 parts of tartaric acid, 1 part of titanium cyanine blue, and 12 parts of water;

[0108] The raw materials for preparing the phase change temperature control layer include the following components by weight:

[0109] Cement 30 parts, water-based acrylic resin emulsion 35 parts (glass transition temperature -8℃), paraffin phase change microcapsule with energy storage density 140 J / kg 70 parts, expanded graphite 30 parts, heavy calcium 10 parts, film forming aid 1 part, polycarboxylic acid 2 parts, defoaming agent 2 parts, titanium white 2 parts, water 8 parts;

[0110] The reinforcing layer is a medium alkali glass fiber mesh cloth with a mass of 80 g / m 2 ;

[0111] The thermal insulation layer is a coated fiber-reinforced silica aerogel composite sheet with a thermal conductivity of 0.025 w / (m·k) at 25℃.

[0112] The preparation method of the flexible phase change temperature control decorative panel includes the following steps:

[0113] (1) Place a set size flat mold on a standard conveying platform;

[0114] (2) Mix the raw material components to prepare a decorative panel layer slurry, spray the decorative panel layer slurry into the film cavity, with a spraying thickness of 1 mm, to prepare the decorative panel layer;

[0115] (3) Place a glass fiber mesh reinforcing cloth with a mass of 80 g / m 2 and scrape it flat to prepare the reinforcing layer;

[0116] (4) Mix the raw material components to prepare a phase change temperature control layer slurry, pour the phase change temperature control layer slurry 3 mm, and vibrate for 15 s to prepare the phase change temperature control layer;

[0117] (5) Place a 6 mm thick coated fumed silica composite sheet, press it flat and vibrate for 15 s to prepare the thermal insulation layer;

[0118] (6) After curing at a standard temperature of 35℃ for 36 h, demold the flexible phase change temperature control decorative panel.

[0119] Example 4

[0120] A flexible phase change temperature control decorative panel includes, from the outside to the inside, a decorative panel layer, a reinforcing layer, a phase change temperature control layer, and a thermal insulation layer;

[0121] The raw materials for preparing the decorative panel layer include the following components by weight:

[0122] Gypsum 4 parts, ethylene-vinyl acetate copolymer emulsion 10 parts (glass transition temperature 25℃), boron nitride 16 parts, 325 mesh heavy calcium 10 parts, polycarboxylic acid water reducer 1 part, silicone defoaming agent 2 parts, tartaric acid 0.2 parts, fungicide 1 part, DPP 5 parts, water 12 parts;

[0123] The raw materials for preparing the phase change temperature control layer include the following components by weight:

[0124] Cement 5 parts, water-based acrylic resin emulsion 10 parts (glass transition temperature 25 DEG C), paraffin phase change microcapsule with energy storage density 120 J / kg 30 parts (phase change temperature 25 DEG C-28 DEG C), expanded graphite 20 parts, kaolin 20 parts, tartaric acid 0.2 parts, silicone defoaming agent 2 parts, iron yellow 2 parts, anti-cracking fiber 2 parts, water 8 parts;

[0125] The reinforcing layer is a medium alkali glass fiber mesh cloth with a mass of 60 g / m 2 ;

[0126] The thermal insulation layer is a coated fiber-reinforced silica aerogel composite sheet with a thermal conductivity of 0.025 w / (m-k) at 25 DEG C.

[0127] The preparation method of the flexible phase change temperature control decorative panel includes the following steps:

[0128] (1) Place a set size flat mold on a standard conveying platform;

[0129] (2) Mix the raw material components according to the proportion to prepare the decorative panel layer slurry, spray the decorative panel layer slurry into the film cavity, the spraying thickness is 0.8 mm, and the decorative panel layer is prepared;

[0130] (3) Place a glass fiber mesh reinforcing cloth with a mass of 60 g / m 2 and scrape it flat to prepare the reinforcing layer;

[0131] (4) Mix the raw material components according to the proportion to prepare the phase change temperature control layer slurry, pour the phase change temperature control layer slurry 1 cm, and vibrate for 10 s to prepare the phase change temperature control layer;

[0132] (5) Place a 0.5 mm thick coated fumed silica composite sheet, press it flat and vibrate for 10 s to prepare the thermal insulation layer;

[0133] (6) After curing at a standard temperature of 35 DEG C for 14 h, the flexible phase change temperature control decorative panel is demolded.

[0134] Example 5

[0135] A flexible phase change temperature control decorative panel includes, from outside to inside, a decorative panel layer, a reinforcing layer, a phase change temperature control layer, and a thermal insulation layer;

[0136] The raw materials for preparing the decorative panel layer include the following components by weight:

[0137] Calcium hydroxide 15 parts, modified acrylic resin 20 parts (glass transition temperature 0℃), boron nitride 25 parts, heavy calcium carbonate 40 parts, polycarboxylic acid water reducer 1 part, silicone defoaming agent 2 parts, tartaric acid 0.2 parts, titanium dioxide 5 parts, water 10 parts;

[0138] The raw materials for preparing the phase change temperature control layer include the following components by weight:

[0139] Gypsum 5 parts, water-based polyurethane emulsion 10 parts (glass transition temperature 0℃), paraffin phase change microcapsules with energy storage density of 130 J / kg 30 parts (phase change temperature 25℃-28℃), expanded graphite 25 parts, bentonite 20 parts, silicone defoaming agent 2 parts, iron red 2 parts, water 10 parts;

[0140] The reinforcing layer is a glass fiber mesh with a mass of 60g / m 2 ;

[0141] The thermal insulation layer is a coated fiber-reinforced silica aerogel composite sheet with a thermal conductivity of 0.025 w / (m·k) at 25℃.

[0142] The preparation method of the flexible phase change temperature control decorative panel includes the following steps:

[0143] (1) Place a set size flat mold on a standard conveying platform;

[0144] (2) Mix the raw material components according to the proportion to prepare the decorative panel layer slurry, spray the decorative panel layer slurry into the film cavity, the spraying thickness is 0.8mm, and the decorative panel layer is prepared;

[0145] (3) Place a glass fiber mesh reinforcement cloth with a mass of 60g / m 2 and scrape it flat to prepare the reinforcing layer;

[0146] (4) Mix the raw material components according to the proportion to prepare the phase change temperature control layer slurry, pour the phase change temperature control layer slurry 2.5cm, and vibrate for 12s to prepare the phase change temperature control layer;

[0147] (5) Place a 3.5mm thick coated fumed silica composite sheet, press flat and vibrate for 12s to prepare the thermal insulation layer;

[0148] (6) After curing at a standard temperature of 35℃ for 25h, the flexible phase change temperature control decorative panel is demolded.

[0149] Example 6

[0150] A flexible phase change temperature control decorative panel includes, from outside to inside, a decorative panel layer, a reinforcing layer, a phase change temperature control layer, and a thermal insulation layer;

[0151] The raw materials for preparing the decorative panel layer include the following components by weight:

[0152] Cement 30 parts, water-based acrylic resin emulsion 10 parts (glass transition temperature 10℃), boron nitride 10 parts, kaolin 30 parts, anti-cracking fiber 1 part, silicone defoaming agent 2 parts, tartaric acid 0.2 parts, titanium cyanine blue 1 part, water 12 parts.

[0153] The raw materials for preparing the phase change temperature control layer include the following components by weight:

[0154] Cement 30 parts, water-based acrylic resin emulsion 35 parts (glass transition temperature 10℃), paraffin phase change microcapsules with energy storage density of 140 J / kg 50 parts, expanded graphite 30 parts, heavy calcium 10 parts, polycarboxylic acid water reducer 2 parts, defoaming agent 2 parts, titanium dioxide 2 parts, water 8 parts.

[0155] The reinforcing layer is a medium alkali glass fiber mesh cloth with a mass of 60 g / m 2 ;

[0156] The thermal insulation layer is a coated fiber-reinforced silica aerogel composite sheet with a thermal conductivity of 0.020 w / (m·k) at 25℃.

[0157] The preparation method of the flexible phase change temperature control decorative panel includes the following steps:

[0158] (1) Place a set size flat mold on a standard conveying platform;

[0159] (2) Mix the raw material components according to the proportion to prepare the decorative panel layer slurry, spray the decorative panel layer slurry into the film cavity, the spraying thickness is 1 mm, and the decorative panel layer is prepared;

[0160] (3) Place a glass fiber mesh reinforcing cloth with a mass of 60 g / m 2 and scrape it flat to prepare the reinforcing layer;

[0161] (4) Mix the raw material components according to the proportion to prepare the phase change temperature control layer slurry, pour the phase change temperature control layer slurry 3 cm, and vibrate for 15 s to prepare the phase change temperature control layer;

[0162] (5) Place a 6 mm thick coated fumed silica composite sheet, press it flat and vibrate for 15 s to prepare the thermal insulation layer;

[0163] (6) After curing at a standard temperature of 35℃ for 36 h, the flexible phase change temperature control decorative panel is demolded.

[0164] Comparative Example 1

[0165] The difference from Example 1 is that the glass transition temperature of the water-based acrylic resin emulsion is replaced by -15℃.

[0166] Comparative Example 2

[0167] The difference from Example 1 is that the glass transition temperature of the aqueous acrylic resin emulsion is replaced by 30℃.

[0168] Comparative Example 3

[0169] The difference from Example 1 is that the boron nitride in the decorative panel layer is replaced by equal weight parts of magnesium oxide.

[0170] Comparative Example 4

[0171] The difference from Example 1 is that the expanded graphite in the phase change temperature control layer is replaced by equal weight parts of magnesium oxide.

[0172] Product Effect Test

[0173] 1. Test Method

[0174] (1) Flexibility: The flexibility test method refers to the flexibility determination method in JG / T 311-2011 Flexible Tile, but the bending diameter is changed to 4-10 cm. Specifically, the above prepared decorative panel is cut into a test sample with a length of 25 cm and a width of 5 cm, and the flexibility is determined by bending on the surface of a cylinder with different diameters (4-10 cm) under standard experimental conditions [(23±2)℃, relative humidity (RH) 50±10%]. The judgment method is to observe whether the sample can be bent and whether there are cracks on the surface of the decorative panel after bending. If the decorative panel can be bent and there are no cracks on the surface of the decorative panel, and the smaller the diameter of the cylinder used, the better the flexibility of the decorative panel.

[0175] (2) Temperature control performance: When the outdoor temperature is 35℃ (simulating summer) or 5℃ (simulating winter), the indoor temperature is maintained at 25℃ using an air conditioner, and the 24h air conditioner power consumption (KWH) is recorded. The more the air conditioner power consumption, the worse the temperature control performance of the phase change temperature control material.

[0176] 2. Test Results

[0177] (1) Flexibility Test Results

[0178] Table 1 Flexibility Test Results of Decorative Panels of Each Example and Comparative Example

[0179] Number Flexibility test results Example 1 Bent on a cylindrical surface of diameter 4.5 cm and no cracks on the surface of the decorative panel Example 2 Bent on a cylindrical surface of diameter 5 cm and no cracks on the surface of the decorative panel Example 3 Bent on a cylindrical surface of diameter 4.5 cm and no cracks on the surface of the decorative panel Example 4 Bent on a cylindrical surface of diameter 10 cm and no cracks on the surface of the decorative panel Example 5 Bent on a cylindrical surface of diameter 6-8 cm and no cracks on the surface of the decorative panel Example 6 Bent on a cylindrical surface of diameter 6-8 cm and no cracks on the surface of the decorative panel Comparative Example 1 Bent on a cylindrical surface of diameter 3 cm and no cracks on the surface of the decorative panel Comparative Example 2 Could not be bent on a cylindrical surface of diameter 10 cm and broke directly Comparative Example 3 Bent on a cylindrical surface of diameter 4.5 cm and no cracks on the surface of the decorative panel Comparative Example 4 Bent on a cylindrical surface of diameter 4.5 cm and no cracks on the surface of the decorative panel

[0180] From the results of Table 1, it can be seen that the flexible phase change temperature control decorative panels prepared in Examples 1-6 have moderate flexibility in standard temperature test, and the surface of the decorative panel has no cracks. Comparative Example 1 can be bent on a 3 cm cylindrical surface, and the flexibility is too large, which is not conducive to the use of the product across seasons, especially in summer when the temperature rises, the product will become softer, which is not conducive to the use on the wall and ceiling. The decorative panel prepared in Comparative Example 2 cannot be bent on a 10 cm cylindrical surface, and it directly breaks, which will lose flexibility or even become brittle in winter at low temperature, and cannot be used on some specific shaped surfaces. The present application adjusts the flexibility of the flexible phase change temperature control decorative panel by adding a specific glass transition temperature water-based polymer emulsion to the decorative panel layer and the phase change temperature control layer, so as to adapt to the use of different parts and different seasons. The lower the glass transition temperature of the water-based polymer emulsion, the better the flexibility of the product, which can be bent on a smaller diameter cylindrical surface without cracks; the higher the glass transition temperature of the polymer emulsion, the flexibility gradually decreases, and when the glass transition temperature is higher than 25℃, the flexibility of the product at room temperature does not increase obviously; but when the glass transition temperature of the water-based polymer emulsion is lower than -10℃, the flexibility of the product at room temperature is too large, which is not conducive to the use in summer. Therefore, the water-based polymer emulsion with a glass transition temperature of-10-25℃ (which can be added alone or compounded) is added to the decorative panel layer and the phase change temperature control layer, which is conducive to adjusting the flexibility of the product, so that the product can be used in different seasons and different parts.

[0181] (2) Temperature control performance test results

[0182] Table 2 Temperature control performance test results of Examples 1-3 of the present application

[0183]

[0184] Table 3 Temperature control performance test results of Examples 4-6 and Comparative Examples 1-4

[0185]

[0186]

[0187] From the results of Table 2 and Table 3, it can be seen that, in the case of outdoor temperature of 35℃, the indoor temperature is maintained at 25℃ by using air conditioner, and the three cases of Example 1 are pasted on the wall and ceiling of the room (as shown in Table 1), which can save 29.3% [(28-19.8) ÷ 28 x 100% = 29.3%], 43.2% [(28-15.9) ÷ 28 x 100% = 43.2%], 60.7% [(28-11) ÷ 28 x 100% = 60.7%] of electricity, respectively, thus it can be seen that, with the increase of the indoor pasting area (combined use of ceiling and wall), the power consumption is further reduced. In the case of outdoor temperature of 5℃, the same experiment is carried out by using air conditioner to maintain the indoor temperature at 25℃, and Example 1 can save 28.8% [(35-24.9) ÷ 35 x 100% = 28.8%], 42% [(35-20.3) ÷ 35 x 100% = 42%], 57.7% [(35-14.8) ÷ 35 x 100% = 57.7%] of electricity, respectively. It can be found from the experimental results that, after pasting the phase change decorative panel, the power consumption in the room is reduced, i.e. the phase change material in the decorative panel plays a role of storing and releasing energy, effectively reducing the actual running time of the air conditioner. And with the increase of the pasting area (combined use of ceiling and wall), the energy consumption gradually decreases. In summary, whether in hot or cold environment, the flexible phase change temperature control decorative panel of the present application can play a good temperature control and energy saving effect, achieving the purpose of reducing energy consumption.

[0188] The energy consumption calculation method of each embodiment is the same as that of Example 1. In the simulation of summer and winter tests, Example 2 saves energy consumption by 30.0% and 29.4%, respectively, which is 0.8% and 0.6% different from the data of 29.2% and 28.8% of Example 1, respectively, and the energy saving effect is not much different. Changing the types of inorganic cementing materials and emulsions plays a major role in the flexibility of the product.

[0189] In the simulation of summer and winter tests, Example 3 saves energy consumption by 33.9% and 32.8%, respectively; Example 4 saves energy consumption by 37.5% and 35.7%, respectively; Example 5 saves energy consumption by 41.7% and 38.5%, respectively; and Example 6 saves energy consumption by 43.6% and 44.5%, respectively. The main difference between Examples 3-6 and Example 1 is the amount of phase change material, the energy storage density and the thickness of the flexible decorative panel. From the above, it can be seen that when the amount of phase change material increases and becomes thicker, the same high energy saving effect can be achieved without increasing the pasting area.

[0190] After reducing the glass transition temperature of the emulsion in Comparative Example 1, the flexibility of the prepared decorative panel is too large, and in Comparative Example 2, the glass transition temperature of the emulsion is increased, and the flexibility of the prepared decorative panel is very poor. The above Comparative Examples 1 and 2 cannot obtain a decorative panel with practical usability.

[0191] From the results of Table 3, it can be seen that in Comparative Example 3 and Comparative Example 4, equal weight parts of magnesium oxide were used to replace boron nitride in the decorative panel layer and expanded graphite in the phase change temperature control layer, respectively. In Comparative Example 3, the energy saving in summer and winter was 26% and 24.3%, respectively, and in Comparative Example 4, the energy saving in summer and winter was 24.3% and 23.1%, respectively. Although white magnesium oxide is also a commonly used heat-conducting filler and does not affect the color effect of the decorative layer, the final energy saving effect of the product is not as good as that of Example 1. The main reason is that the thermal conductivity of magnesium oxide is several times smaller than that of boron nitride and expanded graphite, and the heat conduction is not as obvious as that of boron nitride and expanded graphite. The storage and release of energy between the phase change material are relatively delayed, and therefore the energy saving effect is not as good as that of Example 1.

Claims

1. A flexible phase change temperature control decorative panel, characterized by, The decorative panel layer, the phase change temperature control layer and the reinforcing layer are sequentially arranged from outside to inside. The raw material components for preparing the decorative panel layer include, by weight, 10-35 parts of a water-based polymer emulsion, 5-30 parts of inorganic gel material, and 20-30 parts of a heat-conducting filler A, wherein the heat-conducting filler A includes boron nitride. The raw material components for preparing the phase change temperature control layer include, by weight, 10-40 parts of a water-based polymer emulsion, 10-30 parts of inorganic gel material, 20-30 parts of a heat-conducting filler B, and 30-70 parts of phase change microcapsules, wherein the heat-conducting filler B includes expanded graphite. The glass transition temperature of the water-based polymer emulsion is -10℃ to -6℃. The phase change microcapsules are paraffin phase change microcapsules, having an energy storage density of 120-140 J / g, a phase change temperature of 25-28℃, and a particle size of 40-200 μm. The inorganic gel material is one or more of gypsum, cement, calcium hydroxide, and water glass. The water-based polymer emulsion is one or more of a water-based acrylic resin emulsion, a water-based modified acrylic resin emulsion, a water-based ethylene-vinyl acetate copolymer emulsion, a water-based polyurethane emulsion, and a water-based epoxy resin emulsion. The expanded graphite having heat-conducting and adsorbing effects is partially uniformly distributed in the phase change temperature control layer and partially adsorbed in capillary pores formed after hydration of the inorganic gel material, thereby forming numerous heat-conducting channels.

2. The flexible phase change temperature control panel according to claim 1, wherein The raw material components for preparing the decorative panel layer further include common fillers, additives, pigments, and water, wherein the common fillers are one or more of heavy calcium carbonate, kaolin, quartz sand, and bentonite.

3. The flexible phase change temperature control panel according to claim 1, wherein The raw material components for preparing the phase change temperature control layer further include common fillers, additives, and water, wherein the common fillers are one or more of heavy calcium carbonate, kaolin, quartz sand, and bentonite.

4. The flexible phase change temperature control panel according to claim 1, wherein The flexible phase change temperature control decorative panel further includes a reinforcing layer and a heat insulation layer, and the flexible phase change temperature control decorative panel sequentially includes the decorative panel layer, the reinforcing layer, the phase change temperature control layer, and the heat insulation layer from outside to inside.

5. The method of producing the flexible phase change temperature control decorative sheet according to any one of claims 1 to 4, characterized by, The method includes the following steps: The decorative panel layer slurry and the phase change temperature control layer slurry are prepared by using the respective raw material components of the decorative panel layer and the phase change temperature control layer, respectively, and then the decorative panel layer slurry is coated on a mold, followed by coating the phase change temperature control layer slurry, thereby obtaining the flexible phase change temperature control decorative panel.

6. Use of the flexible phase change temperature control decorative panel according to any one of claims 1-4 in building materials.

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