阅读说明：本技术 含有相变材料的建筑保温卷材及其制备方法 (Building heat-insulating coiled material containing phase-change material and preparation method thereof ) 是由 王业贞 李秀荣 于 2019-09-09 设计创作，主要内容包括：本发明涉及含有相变材料的建筑保温卷材及其制备方法,所述保温卷材由面向建筑物一侧向外依次包括保温基层、第一反射层、载体层、储热层、第二反射层；所述储热层中含有相变材料。所述保温卷材通过悬浮聚合法得到石蜡微胶囊,将石蜡微胶囊分散于丙烯酸乳液得到储热材料,再将其涂覆在载体材料上,然后在载体材料两侧涂覆超细铜粉得到第一反射层和第二反射层,再将第一反射层与保温材料粘结在一起制得。采用本发明制得的保温卷材运输和施工方便,冬天保温效果好,夏天隔热效果好,且透气性好能够保持建筑物的干燥。(The invention relates to a building heat-insulating coiled material containing a phase-change material and a preparation method thereof, wherein the heat-insulating coiled material sequentially comprises a heat-insulating base layer, a first reflecting layer, a carrier layer, a heat storage layer and a second reflecting layer from one side facing a building to the outside; the heat storage layer contains a phase change material. The heat-insulating coiled material is prepared by obtaining paraffin microcapsules through a suspension polymerization method, dispersing the paraffin microcapsules in acrylic emulsion to obtain a heat storage material, coating the heat storage material on a carrier material, coating superfine copper powder on two sides of the carrier material to obtain a first reflecting layer and a second reflecting layer, and bonding the first reflecting layer and the heat-insulating material together. The heat-insulating coiled material prepared by the invention is convenient to transport and construct, has good heat-insulating effect in winter and good heat-insulating effect in summer, has good air permeability and can keep the building dry.)

1. Building heat preservation coiled material that contains phase change material, its characterized in that: the coiled material comprises a heat-insulation base layer, a first reflecting layer, a carrier layer, a heat storage layer and a second reflecting layer; the heat storage layer contains a phase change material.

2. The insulating coil as set forth in claim 1, wherein: the heat-insulation base layer is made of melamine foam or polyurethane foam, and the thickness of the heat-insulation base layer is 5-20 mm.

3. The insulating coil as set forth in claim 1, wherein: the carrier layer is made by PP, PE or PET's non-woven fabrics, the thickness of carrier layer is 5 ~ 20 mm.

4. The insulating coil as set forth in claim 3, wherein: the non-woven fabric has an areal density of 50g/m²～500g/m²(ii) a The diameter of PP, PE or PET fiber in the non-woven fabric is 0.1-7 μm.

5. The insulating coil as set forth in claim 1, wherein: the heat storage layer is an acrylic emulsion coating containing 10-20% of phase change materials; the thickness of the heat storage layer is 60-80 mu m; the phase-change material is a paraffin microcapsule; the diameter of the paraffin microcapsule is less than 30 μm; preferably, the diameter of the paraffin microcapsule is 5-20 μm.

6. The insulating coil as set forth in claim 1, wherein: the first reflecting layer and the second reflecting layer are both made of superfine copper powder, and the diameter of the copper powder is 0.3 mu m or 1.5 mu m; and a layer of transparent acrylic emulsion is sprayed on the first reflecting layer and the second reflecting layer, and the thickness of the transparent acrylic emulsion is not more than 10 mu m.

7. The preparation method of the building heat-insulating coiled material containing the phase-change material as claimed in claims 1 to 6, which is characterized in that: the method comprises the following steps:

(1) uniformly coating acrylic emulsion containing a phase-change material on one side of the carrier layer, and baking for 30-40 min at 50-60 ℃ to obtain a heat storage layer;

(2) coating a layer of superfine copper powder on the other side of the carrier layer to obtain a first reflecting layer, and spraying a layer of transparent acrylic emulsion on the first reflecting layer; coating a layer of superfine copper powder on the heat storage layer to obtain a second reflecting layer, and spraying a layer of transparent acrylic emulsion on the second reflecting layer;

(3) and (3) bonding the first reflecting layer and the heat-insulating base layer together by using an acrylic adhesive to obtain the building heat-insulating coiled material containing the phase-change material.

8. The method of claim 7, wherein: the acrylic emulsion containing the phase-change material is prepared by the following method:

(1) taking a copolymer of methyl methacrylate and acrylic acid as a wall material, and coating paraffin by a suspension polymerization method to prepare a paraffin microcapsule;

(2) dispersing the paraffin microcapsules into the acrylic emulsion in a plurality of times, wherein the adding amount of the paraffin microcapsules is 1/2 of the residual amount each time, and obtaining the acrylic emulsion containing the phase-change material.

9. The use of the building insulation coil containing the phase change material according to claims 1 to 6 in at least one of the following items 1) to 3):

1) heat preservation of building exterior walls or roofs;

2) insulation of building exterior walls or roofs;

3) keeping the outer wall or the roof of the building dry;

4) the heat preservation renovation of the existing buildings, especially the old buildings.

10. Use according to claim 9, characterized in that: when the coiled material is used for building outer walls, the width of the coiled material is 3m at most; the width of the coil is at most 1.5m when the coil is used for building roofs.

Technical Field

The invention relates to the technical field of building heat-insulating materials, in particular to a building heat-insulating coiled material containing a phase-change material and a preparation method thereof.

Background

The heat insulating material is an insulating material with low heat conductivity and is used for heat insulation, heat transfer resistance or heat transfer reduction as much as possible, and the common heat insulating material is rock wool or glass wool. Heat transfer is reduced and temperature gradients are maintained through the use of insulating materials. In particular, when the temperature fluctuations are large, for example, during the day and night, in the summer and in the winter, cooling is carried out in the case of too high heat energy, and heating is carried out in the case of too little heat energy. But heating and cooling itself requires energy input and is therefore costly.

Phase Change Materials (PCM), which is a shorthand for phase change materials, refer to substances that can undergo a phase change within a narrow temperature range and release or absorb a large amount of energy in the form of latent heat during the phase change. The research on phase change materials began in 1949 for the first time, but until the 70 th century, the phase change materials have received increasing attention due to the increasing energy crisis, and they are widely used in the energy storage field, such as solar energy storage, smart fabrics, temperature-regulated buildings, etc. The phase change energy storage material is applied to the building wallboard, so that the temperature fluctuation caused by the environment temperature to the indoor environment can be reduced, the indoor comfort level is improved, and meanwhile, the energy consumption of the building can be reduced, and the energy-saving effect is achieved. If a temperature gradient exists between the interior and exterior of the building, heat can be transferred from the warm side to the cold side by heat conduction, convection, and radiation. Phase change materials may reduce heat transfer through walls, roofs, etc. of a building. This is intended to prevent heat transfer from the inside to the outside in winter or from the outside to the inside in summer as much as possible, thereby performing the functions of heat preservation in winter and heat insulation in summer.

The phase-change energy storage building material is composed of a phase-change material (PCM) and a building carrier, and has excellent energy storage and release capacity; compared with the common building heat-insulating material, the material has higher heat capacity and thermal inertia. When the temperature of the microenvironment where the phase change material is located is lower than the phase change point, the phase change material is condensed into a solid state from a liquid state, and heat is released; when the temperature of the microenvironment where the phase change material is located is higher than the phase change point, the phase change material is melted from a solid state to a liquid state, and heat absorption is started. By absorbing and releasing the energy, the purposes of keeping room temperature, saving energy and reducing emission are achieved.

At present, most of phase change energy storage building materials on the market are mortar or wall bodies containing phase change materials, the materials need to be used during building construction, and heat insulation materials are used for buildings during construction. However, the phase change energy storage materials used for heat preservation of the existing buildings are few, corners or bulges may exist in the existing buildings, particularly specific structures of edge areas, and the phase change energy storage heat preservation materials which are soft and can change shapes are needed to be laid. In addition, the phase change energy storage heat insulation material on the market at present has poor air permeability, water vapor on the surface of a building cannot pass through the heat insulation material, the outer surface of the building is moist and not dry, and the heat insulation effect is also influenced.

Disclosure of Invention

The invention provides a building heat-insulating coiled material containing a phase-change material and a preparation method thereof, aiming at the problems that the existing heat-insulating material containing the phase-change material is not beneficial to transportation and construction, is not suitable for buildings with specific structures, has poor air permeability and the like, can be conveniently transported and constructed, can insulate heat in winter and summer, has good air permeability and can keep the buildings dry.

The invention provides a building heat-insulation coiled material containing a phase-change material, which comprises a heat-insulation base layer, a first reflecting layer, a carrier layer, a heat storage layer and a second reflecting layer; the heat storage layer contains a phase change material.

Preferably, the heat-insulation base layer is made of melamine foam or polyurethane foam, and the thickness of the heat-insulation base layer is 5-20 mm.

Preferably, the carrier layer is made of PP, PE or PET non-woven fabrics, and the thickness of the carrier layer is 5-20 mm.

Preferably, the non-woven fabric has an areal density of 50g/m²～500g/m²(ii) a The diameter of PP, PE or PET fiber in the non-woven fabric is 0.1-7 μm.

Preferably, the heat storage layer is an acrylic emulsion coating containing 10-15% of phase change materials; the thickness of the heat storage layer is 60-80 mu m; the phase-change material is a paraffin microcapsule; the diameter of the paraffin microcapsule is less than 30 μm; more preferably, the diameter of the paraffin microcapsule is 5-20 μm.

Preferably, the first reflecting layer and the second reflecting layer are both made of superfine copper powder, and the diameter of the copper powder is 0.3 μm or 1.5 μm; and a layer of transparent acrylic emulsion is sprayed on the first reflecting layer and the second reflecting layer, and the thickness of the transparent acrylic emulsion is not more than 10 mu m.

In a second aspect of the present invention, there is provided a method for preparing a building insulation coil containing a phase change material, comprising the steps of:

(1) uniformly coating acrylic emulsion containing a phase-change material on one side of the carrier layer, and baking for 30-40 min at 50-60 ℃ to obtain a heat storage layer;

(2) coating a layer of superfine copper powder on the other side of the carrier layer to obtain a first reflecting layer, and spraying a layer of transparent acrylic emulsion on the first reflecting layer; coating a layer of superfine copper powder on the heat storage layer to obtain a second reflecting layer, and spraying a layer of transparent acrylic emulsion on the second reflecting layer;

(3) and (3) bonding the first reflecting layer and the heat-insulating base layer together by using an acrylic adhesive to obtain the building heat-insulating coiled material containing the phase-change material.

Preferably, the acrylic emulsion containing the phase-change material is prepared by the following method:

(1) taking a copolymer of methyl methacrylate and acrylic acid as a wall material, and coating paraffin by a suspension polymerization method to prepare a paraffin microcapsule;

(2) dispersing the paraffin microcapsules into the acrylic emulsion in a plurality of times, wherein the adding amount of the paraffin microcapsules is 1/2 of the residual amount each time, and obtaining the acrylic emulsion containing the phase-change material.

In a third aspect of the invention, there is provided use of a building insulation coil containing a phase change material, comprising:

1) heat preservation of building exterior walls or roofs;

2) insulation of building exterior walls or roofs;

3) keeping the outer wall or the roof of the building dry;

4) the heat preservation renovation of the existing buildings, especially the old buildings.

Preferably, when the coiled material is used for building outer walls, the width of the coiled material is 3m at most; the width of the coil is at most 1.5m when the coil is used for building roofs.

The invention has the beneficial effects that:

(1) the building heat-preservation coiled material containing the phase-change material can preserve heat in winter and insulate heat in summer;

(2) the building heat-insulating coiled material containing the phase-change material can be laid quickly and cleanly for the heat-insulating renovation of the built buildings, particularly the buildings with specific structures in the edge areas or old buildings;

(3) the building heat-insulating coiled material containing the phase-change material is convenient to transport and store and small in occupied space;

(4) the building heat-insulating coiled material containing the phase-change material provided by the invention has good air permeability and can ensure the drying of buildings.

Drawings

FIG. 1 is a block diagram of a building insulation coil containing a phase change material;

shown in the figure:

1. the heat-preservation substrate comprises a heat-preservation substrate layer, 2, a first reflecting layer, 3, a carrier layer, 4, a heat storage layer, 5, a second reflecting layer, 6 and a phase-change material.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

As described in the background art, the heat insulating material containing the phase change material is not suitable for transportation and construction, is not suitable for a building with a specific structure, and has poor air permeability and the like. Based on the structure, the invention provides a building heat-insulation coiled material containing a phase-change material, which comprises a heat-insulation base layer, a first reflecting layer, a carrier layer, a heat storage layer and a second reflecting layer; the heat storage layer contains a phase change material.

The heat-insulation base layer is made of melamine foam or polyurethane foam, and the thickness of the heat-insulation base layer is 5-20 mm. The melamine foam or the polyurethane foam is used as a heat insulation base material, and open-cell foam can be used for improving the air permeability of the heat insulation coiled material.

The carrier layer is made by PP, PE or PET's non-woven fabrics, the thickness of carrier layer is 5 ~ 20 mm. The non-woven fabric has an areal density of 50g/m²～500g/m²(ii) a The diameter of PP, PE or PET fiber in the non-woven fabric is 0.1-7 μm. The non-woven fabric is adopted as the carrier layer, the non-woven fabric has good air permeability, and the surface of the non-woven fabric is rough, so that the acrylic emulsion is easily coated. The heat-insulating effect of the carrier layer is particularly good when the carrier layer is made of a nonwoven fabric made of fibers having a diameter in the range of 0.1 to 7 μm.

The heat storage layer is an acrylic emulsion coating containing 10-15% of phase change materials; the thickness of the heat storage layer is 60-80 mu m; the phase-change material is a paraffin microcapsule; the diameter of the paraffin microcapsule is less than 30 μm; preferably, the diameter of the paraffin microcapsule is 5-20 μm. The phase-change material is a paraffin microcapsule, and the microcapsule coating method is widely applied to the phase-change material, so that the volume change of the phase-change material in the phase-change process can be controlled, the phase-change material is not easy to run off, and the phase-change material can be effectively prevented from being influenced by the external environment; meanwhile, the method also has the advantages of increasing the heat transfer area, accelerating the heat conductivity and the like. The wall material of the paraffin microcapsule is a copolymer of methyl methacrylate and acrylic acid, and the copolymer is easily dispersed in acrylic emulsion; in addition, the acrylic emulsion has good air permeability and does not influence the passing of water vapor.

The first reflecting layer and the second reflecting layer are both made of superfine copper powder, and the diameter of the copper powder is 0.3 mu m or 1.5 mu m; and a layer of transparent acrylic emulsion is sprayed on the first reflecting layer and the second reflecting layer, and the thickness of the transparent acrylic emulsion is not more than 10 mu m. The copper powder on the two sides of the carrier layer can effectively reflect heat radiation, and the reflecting layers on the two sides of the carrier layer can respond to the change of the temperature gradient of the indoor and outdoor buildings in one year by reflecting the heat radiation regardless of the radiation direction of the heat radiation on the heat-insulating coiled material, namely the indoor temperature is higher than the outdoor temperature, the buildings need to be insulated, and the reflecting layers can reflect the heat emitted indoors and reduce the indoor heat radiation; if the outdoor temperature is higher than the indoor temperature, the building needs to be insulated, and the reflecting layer can reflect outdoor heat and reduce the transmission of the outdoor heat to the indoor space. Compared with the copper foil or the aluminum foil, the copper powder can ensure that water vapor passes through the heat-insulating coiled material, so that the dryness of the building is not influenced. The use of copper powder advantageously reduces the glare effect, in particular of the second reflective layer on the side facing away from the building in the installed state. In addition, copper has a higher reflection in the IR region. The transparent acrylic emulsion is sprayed on the copper powder, so that the copper powder can be prevented from being oxidized, and the copper powder can be firmly fixed on two sides of the carrier layer.

In order to make the technical solutions of the present application more clearly understood by those skilled in the art, the technical solutions of the present application will be described in detail below with reference to specific embodiments. If the experimental conditions not specified in the examples are specified, the conditions are generally conventional or recommended by the reagent company; reagents, consumables, and the like used in the following examples are commercially available unless otherwise specified.