WO2017206583A1 - Phase change energy storage powder for building energy-saving and preparation method therefor - Google Patents

Phase change energy storage powder for building energy-saving and preparation method therefor Download PDF

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WO2017206583A1
WO2017206583A1 PCT/CN2017/078375 CN2017078375W WO2017206583A1 WO 2017206583 A1 WO2017206583 A1 WO 2017206583A1 CN 2017078375 W CN2017078375 W CN 2017078375W WO 2017206583 A1 WO2017206583 A1 WO 2017206583A1
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phase change
parts
energy storage
weight
powder
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PCT/CN2017/078375
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French (fr)
Chinese (zh)
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陈庆
曾军堂
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成都新柯力化工科技有限公司
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/02—Materials undergoing a change of physical state when used
    • C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
    • C09K5/063—Materials absorbing or liberating heat during crystallisation; Heat storage materials
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/02—Materials undergoing a change of physical state when used
    • C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/08—Materials not undergoing a change of physical state when used
    • C09K5/14—Solid materials, e.g. powdery or granular

Definitions

  • China is a country with large energy consumption.
  • the total energy consumption of building energy consumption has increased from 10% at the end of the 1970s to 35% in 2015.
  • Each year, urban and rural new housing construction area is nearly 2 billion square meters, of which more than 80% are high-energy buildings; the existing buildings are nearly 40 billion square meters, and more than 95% are high-energy buildings.
  • the pressure on environmental protection, resource utilization and energy supply is also increasing. Taking the road of building energy conservation is an inevitable development trend of architecture in China and the world.
  • the indoor building energy-saving method adopted in China is mainly to slow down the heat transfer insulation method, such as glass wool insulation, rock wool insulation, polystyrene plastic foam insulation, and foamed polyurethane insulation.
  • the energy in this form of insulation will eventually be lost.
  • we have continuously improved and improved the research on building energy-saving materials it has been difficult to meet the requirements of high energy efficiency. Therefore, the development of new types of building energy-saving materials has become the most urgent issue for humans to solve the energy crisis.
  • phase change materials are used as a new type of energy-saving material in concrete, wallboard, plasterboard, flooring, ceiling, putty, paint, and the like.
  • the energy consumption for cooling/heating in the building is greatly reduced, and the energy saving effect is far superior to the traditional thermal insulation material.
  • phase change materials are often not directly usable.
  • most practical phase change energy storage materials including crystalline hydrated salts, And some organic compounds (such as paraffin, fatty acids, etc.), the use of solid-liquid phase transition of the material to achieve energy storage and release.
  • the solid-liquid phase transition material will have a liquid state during the phase change process, there are disadvantages such as supercooling, phase separation, poor energy storage stability, and influence on the strength of the building material.
  • the phase change material is a material whose phase state changes with temperature, the solid-liquid phase transition occurs continuously, and the use of ruthenium in building materials is poor. In particular, precipitation, leakage, and the like cause deterioration in the performance of building materials. Therefore, a composite shaped phase change material emerges by coating or networking the solid-liquid phase change material in a matrix structure through a certain matrix material, thereby exhibiting a shaped phase change material.
  • phase change materials reported above are all phase change materials having a stable morphology, and are good energy-saving materials suitable for use in the field of building energy conservation.
  • the energy storage properties, supercooling, fire resistance, and compatibility with other building materials of these materials are currently unsatisfactory.
  • the shape change of the phase change material is easy to cause the storage density of the phase change composite material to decrease due to the use of a large number of carriers, which will inevitably result in the need to add more phase change materials, and the prior art phase change materials will cause building materials at high added amounts. Deterioration in performance.
  • phase change material 80-85 parts by weight of the phase change material, 0.1-0.3 parts by weight of the anti-supercoolant, and 2-3 parts by weight of the active agent are uniformly ground to obtain a modification Phase change material;
  • the temperature setting of the screw extruder is: one to three zones 50 ° C ⁇ 60 ° C; four to six zones 6 ° C ⁇ 80 ° C; 50°C ⁇ 60°C to the 9th district; 40°C in the 10th district; the screw speed is 50 ⁇ 100r/min; the material is removed from the first zone after being squeezed and coated, and the phase change material is not completely Melting, being coated with a coating agent in a powder state to obtain a powdery or granular phase change energy storage material;
  • phase change energy storage material obtained in the step (2) and the 2-3 parts by weight of the flame retardant are ground Dispersion grinding in the machine, the flame retardant is embedded in the surface of the phase change energy storage material particles, and sieved to obtain phase change energy storage powder.
  • the heat conductive agent is at least one of aluminum powder, copper powder, iron powder, and graphite powder.
  • the stabilizer may select components having different stability properties according to the use and needs of the product.
  • the construction materials involved in the present invention for example, at least one of the commonly used dibasic lead stearate, bismuth laurate, n-butyltin diacetate, antioxidant 1010, antioxidant 168, and antioxidant are included.
  • the flame retardant is at least one of a phosphate ester, a halogen-containing phosphate, ammonium polyphosphate, zinc borate, red phosphorus, magnesium hydroxide, and aluminum hydroxide.
  • phase change energy storage material obtained in the step (2) and 2-3 parts by weight of the flame retardant are dispersed and ground in a grinder to embed the flame retardant on the surface of the phase change energy storage material particle [0029] And sifting to obtain phase change energy storage powder.
  • the screw extruder is preferably a single screw extruder.
  • the present invention provides a phase change energy storage powder, using a high energy storage density of inorganic hydrated salt as a phase change material, through Cross-linked anti-cold solution solves the problem of over-cooling of hydrated salt, and further uses a screw extruder to coat and coat the surface of the phase change material with a heat-conducting film, which solves the defects of leakage and poor thermal conductivity of the phase-change material.
  • the flame retardant is embedded on the surface of the phase change energy storage material particles, thereby improving the flame retardancy and improving the compatibility of the phase change energy storage powder with the building material.
  • the phase change energy storage powder has good dispersibility in the watering system of concrete, mortar, putty, paint and the like.
  • phase change energy storage powder used in building energy-saving is extruded by a screw extruder to coat a surface of the phase change material with a heat conductive film, thereby solving the leakage of the phase change material and poor thermal conductivity. defect.
  • the flame retardant is embedded on the surface of the phase change energy storage material particle, thereby improving the flame retardancy and improving the compatibility of the phase change energy storage powder with the building material. Thereby greatly expanding the adaptation range of phase change energy storage powder. It is directly used as a filler in concrete, mortar, putty and paint.
  • phase change energy storage material obtained in the step (2) is dispersed and ground in a grinder with 2 parts by weight of ammonium polyphosphate and 1 part by weight of magnesium hydroxide fiber, and the flame retardant is embedded in the phase.
  • the surface of the energy storage material particles is changed and sieved to obtain a phase change energy storage powder.
  • the curve test heating rate 5 ° C / min, measured the phase change energy storage powder storage density of 165KJ / kg, good compatibility with cement mortar without segregation.
  • phase change material 50 parts by weight of disodium hydrogen phosphate dodecahydrate, 30 parts by weight of sodium acetate trihydrate, 0.2 parts by weight of sodium borate anti-supercoolant, and 3 parts by weight
  • the titanate is refined into a powder having a particle diameter of less than 2 ⁇ m to obtain a modified phase change material;
  • extrusion coating the modified phase change material obtained in the step (1) and 10 parts by weight of the polypropylene wax, 1 part by weight of the thermal conductive graphite powder, 0.8 parts by weight of strontium laurate stabilizer Disperse evenly in a high-speed mixer, and then sent to a twin-screw screw extruder.
  • phase change energy storage material obtained in the step (2) and 3 parts by weight of the halogenated halogen-containing phosphoric acid ester are dispersed and ground in a grinder to embed the flame retardant in the phase change energy storage material.
  • the surface of the particles is sieved to obtain a phase change energy storage powder.
  • phase change material 35 parts by weight of sodium sulfate decahydrate, 45 parts by weight of sodium acetate trihydrate, 0.3 parts by weight of anti-cold agent potassium pyroantimonate, 2 parts by weight
  • the polyoxyethylene fatty acid glyceride is refined into a powder having a particle diameter of less than 2 ⁇ m to obtain a modified phase change material;
  • phase change energy storage material obtained in the step (2) is dispersed and ground with 2 parts by weight of the flame retardant red phosphorus, 0.5 parts by weight of a zinc borate grinder, and the flame retardant is embedded in the phase change.
  • the surface of the energy storage material particles is sieved to obtain a phase change energy storage powder.
  • phase change material 40 parts by weight of calcium chloride hexahydrate, 40 parts by weight of sodium acetate sodium phase change material, 0.2 parts by weight of sodium metaaluminate, 2 parts by weight
  • the aluminate coupling is refined into a powder having a particle diameter of less than 2 ⁇ m to obtain a modified phase change material;
  • the modified phase change material obtained in the step (1) is 10 parts by weight of polycaprolactone, 2 parts by weight of iron powder, and 0.5 parts by weight of dibasic stearic acid.
  • the lead is uniformly dispersed in a high-speed mixer and then fed to a single-screw extruder.
  • the temperature of the screw extruder is set to one to three zones 50. C ⁇ 60.
  • phase change energy storage powder used for building energy conservation adopts conventional and cheap inorganic phase change materials, the production technology is short, can be continuously operated, is easy to implement and control, and has low cost and is favorable for industrial production.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
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  • Materials Engineering (AREA)
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Abstract

A phase change energy storage powder for building energy-saving and a preparation method therefor, relating to the field of building energy-saving materials. The powder is a powder type energy storage material comprising an anti-supercooling agent and prepared by extrusion cladding using a screw. The phase change energy storage powder is prepared from the following components in parts by weight: 80-85 parts of a phase change material, 2-3 parts of an active agent, 0.1-0.3 parts of an anti-supercooling agent, 8-12 parts of a coating agent, 1-2 parts of a heat conduction agent, 0.5-1 parts of a stabilizer, and 2-3 parts of a flame-retardant agent. The phase change energy storage powder has high energy density, would not be supercooled, and is flame-retardant and highly compatible with most of building materials. The powder can be added in large quantity without affecting the strength of a building material, and can be applied to concrete, mortar, putty, paint, or the like.

Description

一种用于建筑节能的相变储能粉及其制备方法 技术领域  Phase change energy storage powder for building energy saving and preparation method thereof
[0001] 本发明涉及建筑节能材料领域， 具体涉及一种用于建筑节能的相变储能粉及其 制备方法。  [0001] The present invention relates to the field of building energy-saving materials, and particularly relates to a phase change energy storage powder for building energy conservation and a preparation method thereof.
背景技术  Background technique
[0002] 我国是能源消耗大国， 建筑能源消耗量占社会能源总消耗量已由上世纪 70年代 末的 10%， 激增到 2015年的 35%。 每年城乡新建房屋建筑面积近 20亿平方米， 其 中 80%以上为高耗能建筑； 既有建筑近 400亿平方米， 95%以上是高能耗建筑。 随着我国城市化和房地产业的高速发展， 环境保护、 资源利用、 能源供应方面 的压力也日益增大。 走建筑节能之路， 是我国乃至世界建筑的必然发展趋势。  [0002] China is a country with large energy consumption. The total energy consumption of building energy consumption has increased from 10% at the end of the 1970s to 35% in 2015. Each year, urban and rural new housing construction area is nearly 2 billion square meters, of which more than 80% are high-energy buildings; the existing buildings are nearly 40 billion square meters, and more than 95% are high-energy buildings. With the rapid development of China's urbanization and real estate industry, the pressure on environmental protection, resource utilization and energy supply is also increasing. Taking the road of building energy conservation is an inevitable development trend of architecture in China and the world.
[0003] 现阶段我国采用的室内建筑节能方法主要是减缓热传递的保温方式， 如采用玻 璃棉保温、 岩棉保温、 聚苯乙烯塑料泡沫保温、 发泡聚氨酯保温等。 这种保温 形式的能量最终会流失， 尽管我们在建筑节能材料的研究方面进行了不断的改 进和完善， 但始终难以满足高效节能的要求。 因此， 幵发新型的建筑节能材料 成为人类解决能源危机最为迫切的课题。 [0003] At present, the indoor building energy-saving method adopted in China is mainly to slow down the heat transfer insulation method, such as glass wool insulation, rock wool insulation, polystyrene plastic foam insulation, and foamed polyurethane insulation. The energy in this form of insulation will eventually be lost. Although we have continuously improved and improved the research on building energy-saving materials, it has been difficult to meet the requirements of high energy efficiency. Therefore, the development of new types of building energy-saving materials has become the most urgent issue for humans to solve the energy crisis.
[0004] 相变材料成为解决建筑节能的最佳材料。 相变材料 （Phase Change [0004] Phase change materials have become the best material for solving building energy efficiency. Phase change material (Phase Change
Material-PCM) 是指随温度变化而改变相态并能提供潜热的物质。 物质在发生相 态变化的过程中伴随着潜热的吸收与释放， 利用此类相变材料可以实现热能的 存储与释放， 从而使能量循环利用。 相变材料在建筑体系中， 可以主动吸收环 境中的热量， 当环境温度低于其相变温度吋， 再将热量释放出来， 如此能量往 复循环起到节能保温的作用。 相比传统的保温节能方式， 其节能效率大幅提高  Material-PCM refers to a substance that changes phase with temperature and provides latent heat. The material is accompanied by the absorption and release of latent heat in the process of phase change. The use of such phase change materials enables the storage and release of thermal energy, thereby recycling energy. In the building system, the phase change material can actively absorb the heat in the environment. When the ambient temperature is lower than the phase transition temperature, the heat is released, so that the energy recirculates to save energy. Compared with traditional insulation and energy saving methods, its energy saving efficiency is greatly improved
[0005] 目前， 相变材料作为一种新型节能材料， 在混凝土、 墙板、 石膏板、 地板、 天 花板、 腻子、 涂料等中幵始使用。 大幅度减少了建筑物内用于制冷 /制热所需的 能耗， 节能效果远远优于传统的保温隔热材料。 但在实际应用过程中， 相变材 料往往不能直接使用， 目前大多数实用性的相变储能材料， 包括结晶水合盐以 及一些有机化合物 (如石蜡、 脂肪酸等)， 是利用物质的固-液相转变方式实现能 量的贮存和释放。 由于固-液相转变材料在相变化过程中会出现液体状态， 因此 存在着过冷、 相分离、 储能稳定性差、 影响建筑材料强度等缺点。 由于相变材 料是一种相态随温度变化而变化的材料， 不断发生固-液相的转变， 在建筑材料 中使用吋适应性较差。 特别是出现析出、 渗漏等造成建筑材料性能的劣化。 因 而出现了一种复合性的定型相变材料， 它是通过一定的基体材料将固液相变材 料包覆或网络在基体结构中， 从而表现为一种定型的相变材料。 如目前已有将 相变材料通过吸附、 包裹等定型处理后用于建筑材料， 来克服析出渗漏造成的 影响。 公幵号 CN102408877A的专利公幵了将石蜡或十二烷醇与载体材料高密度 聚乙烯复合； 公幵号 CN101139472A的专利公幵了一种相变储能复合涂料及其制 备方法， 将有机相变材料与膨胀的多孔石墨复合成储能微粉， 可用于涂料； 公 幵号 CN1513938A的专利公幵了一种微胶囊包覆相变材料及其制备方法， 该技术 通过微胶囊技术将相变材料包覆在微胶囊内得到一种粉末状， 可添加在抹灰面 中用以墙体。 [0005] Currently, phase change materials are used as a new type of energy-saving material in concrete, wallboard, plasterboard, flooring, ceiling, putty, paint, and the like. The energy consumption for cooling/heating in the building is greatly reduced, and the energy saving effect is far superior to the traditional thermal insulation material. However, in practical applications, phase change materials are often not directly usable. Currently, most practical phase change energy storage materials, including crystalline hydrated salts, And some organic compounds (such as paraffin, fatty acids, etc.), the use of solid-liquid phase transition of the material to achieve energy storage and release. Since the solid-liquid phase transition material will have a liquid state during the phase change process, there are disadvantages such as supercooling, phase separation, poor energy storage stability, and influence on the strength of the building material. Since the phase change material is a material whose phase state changes with temperature, the solid-liquid phase transition occurs continuously, and the use of ruthenium in building materials is poor. In particular, precipitation, leakage, and the like cause deterioration in the performance of building materials. Therefore, a composite shaped phase change material emerges by coating or networking the solid-liquid phase change material in a matrix structure through a certain matrix material, thereby exhibiting a shaped phase change material. For example, phase change materials have been used for building materials after being shaped and treated by adsorption, wrapping, etc., to overcome the effects of precipitation. The patent of CN102408877A discloses the compounding of paraffin or dodecyl alcohol with a carrier material high density polyethylene; the patent CN101139472A discloses a phase change energy storage composite coating and a preparation method thereof, and an organic phase The variable material and the expanded porous graphite are combined into a stored energy micropowder, which can be used for coating; the patent of CN1513938A discloses a microcapsule coated phase change material and a preparation method thereof, and the phase change material is obtained by microcapsule technology It is coated in a microcapsule to obtain a powder, which can be added to the plaster surface for the wall.
[0006] 上述所报道的相变材料都是具有稳定形态的相变材料， 是适用于建筑节能领域 的较好节能材料。 但目前这些材料的储能性能、 过冷、 耐火性能， 以及与其它 建筑材料间的相容性等方面尚不能令人满意。 相变材料的定型由于采用大量的 载体， 易造成相变复合材料储能密度降低， 势必造成需要添加更多的相变材料 ， 而现有技术的相变材料在高添加量吋会造成建筑材料性能的劣化。  [0006] The phase change materials reported above are all phase change materials having a stable morphology, and are good energy-saving materials suitable for use in the field of building energy conservation. However, the energy storage properties, supercooling, fire resistance, and compatibility with other building materials of these materials are currently unsatisfactory. The shape change of the phase change material is easy to cause the storage density of the phase change composite material to decrease due to the use of a large number of carriers, which will inevitably result in the need to add more phase change materials, and the prior art phase change materials will cause building materials at high added amounts. Deterioration in performance.
技术问题  technical problem
[0007] 目前相变材料储能性能、 过冷、 耐火性能， 以及与其它建筑材料间的相容性等 方面尚不能令人满意。 相变材料的定型由于采用大量的载体， 易造成相变复合 材料储能密度降低， 势必造成需要添加更多的相变材料， 而现有技术的相变材 料在高添加量吋会造成建筑材料性能的劣化。  [0007] Current phase change materials have been unsatisfactory in terms of energy storage properties, supercooling, fire resistance, and compatibility with other building materials. The shape change of the phase change material is easy to cause the storage density of the phase change composite material to decrease due to the use of a large number of carriers, which will inevitably result in the need to add more phase change materials, and the prior art phase change materials will cause building materials at high added amounts. Deterioration in performance.
问题的解决方案  Problem solution
技术解决方案  Technical solution
[0008] 针对上述缺陷， 本发明提供一种相变储能粉， 用于建筑节能以克服目前此类材 料的上述缺点， 该相变储能粉储能密度高、 无过冷现象、 阻燃、 与大部分建筑 材料相容性极佳， 可以大量添加而不影响建筑材料的强度， 适用于混凝土、 砂 浆、 腻子、 涂料等建筑材料和装饰材料。 在此基础上， 本发明还提供所述相变 储能粉的制备方法。 [0008] In view of the above drawbacks, the present invention provides a phase change energy storage powder for building energy conservation to overcome the above-mentioned shortcomings of such materials, the phase change energy storage powder has high energy storage density, no overcooling phenomenon, and flame retardant. With most buildings It has excellent material compatibility and can be added in a large amount without affecting the strength of building materials. It is suitable for building materials and decorative materials such as concrete, mortar, putty and paint. Based on this, the present invention also provides a method for preparing the phase change energy storage powder.
[0009] 为解决上述问题， 本发明通过以下技术方案实现：  [0009] In order to solve the above problems, the present invention is implemented by the following technical solutions:
[0010] 一种用于建筑节能的相变储能粉， 其特征是含有防过冷剂并经螺杆挤压包覆的 粉末型储能材料， 由如下重量份的原料制备而成：  [0010] A phase change energy storage powder for building energy saving, characterized in that a powder type energy storage material containing an anti-supercoolant and being extruded by a screw is prepared from the following raw materials by weight:
[0011] 相变材料 80-85份， [0011] 80-85 parts of phase change material,
[0012] 活性剂 2-3份， [0012] 2-3 parts of active agent,
[0013] 防过冷剂 0.1-0.3份，  [0013] anti-supercoolant 0.1-0.3 parts,
[0014] 包裹剂 8-12份， [0014] 8-12 parts of the package,
[0015] 导热剂 1-2份，  [0015] 1-2 parts of thermal conductivity agent,
[0016] 稳定剂 0.5-1份，  [0016] Stabilizer 0.5-1 part,
[0017] 无机阻燃剂 2-3份，  [0017] Inorganic flame retardant 2-3 parts,
[0018] 其中， 所述的相变材料为六水氯化钙、 十水硫酸钠、 十二水磷酸氢二钠、 三水 乙酸钠中的至少一种； 所述的防过冷剂为硼酸钠、 偏铝酸钠、 焦锑酸钾中的至 少一种； 所述的活性剂为甘油脂肪酸酯、 聚氧乙烯脂肪酸甘油酯、 硅烷偶联剂 、 钛酸酯偶联剂、 铝酸酯偶联剂中的至少一种； 所述的包裹剂为乙烯-醋酸乙烯 共聚物、 聚己内酯、 聚乙烯蜡、 聚丙烯蜡、 松香中的至少一种； 所述相变储能 粉， 由如下方法制备而得：  [0018] wherein, the phase change material is at least one of calcium chloride hexahydrate, sodium sulfate decahydrate, disodium hydrogen phosphate dodecahydrate, and sodium acetate trihydrate; and the anti-supercoolant is boric acid At least one of sodium, sodium metaaluminate, and potassium pyroantimonate; the active agent is glycerin fatty acid ester, polyoxyethylene fatty acid glyceride, silane coupling agent, titanate coupling agent, aluminate At least one of a coupling agent; at least one of an ethylene-vinyl acetate copolymer, a polycaprolactone, a polyethylene wax, a polypropylene wax, and a rosin; the phase change energy storage powder, Prepared by the following method:
[0019] (1) 相变材料的表面改性： 将 80-85重量份的相变材料、 0.1-0.3重量份的防过 冷剂、 2-3重量份的活性剂研磨均匀， 得到改性相变材料；  [0019] (1) Surface modification of the phase change material: 80-85 parts by weight of the phase change material, 0.1-0.3 parts by weight of the anti-supercoolant, and 2-3 parts by weight of the active agent are uniformly ground to obtain a modification Phase change material;
[0020] (2) 挤压包覆： 将步骤 （1) 得到的改性相变材料与 8-12重量份的包裹剂、 1-2 重量份的导热剂、 0.5-1重量份的稳定剂在高速混合机中分散均匀， 然后送入螺 杆挤出机， 螺杆挤出机的温度设置方式为： 一至三区 50°C~60°C; 四至六区 6°C~8 0°C; 七至九区 50°C~60°C; 十区 40°C; 螺杆转速为 50~100r/min; 物料由一区进 入经挤压包覆后从十区出料口排除， 相变材料没有完全熔融， 以粉末态被包裹 剂包覆， 得到粉状或颗粒状相变储能材料；  [0020] (2) Extrusion coating: the modified phase change material obtained in the step (1) and 8-12 parts by weight of the encapsulant, 1-2 parts by weight of the thermal conductive agent, 0.5-1 part by weight of the stabilizer Disperse evenly in a high-speed mixer and then feed it into a screw extruder. The temperature setting of the screw extruder is: one to three zones 50 ° C ~ 60 ° C; four to six zones 6 ° C ~ 80 ° C; 50°C~60°C to the 9th district; 40°C in the 10th district; the screw speed is 50~100r/min; the material is removed from the first zone after being squeezed and coated, and the phase change material is not completely Melting, being coated with a coating agent in a powder state to obtain a powdery or granular phase change energy storage material;
[0021] (3) 研磨复合： 将步骤 （2) 得到的相变储能材料与 2-3重量份阻燃剂在研磨 机中分散研磨， 使阻燃剂镶嵌在相变储能材料颗粒表面， 并过筛得到相变储能 粉。 [0021] (3) Grinding and compounding: the phase change energy storage material obtained in the step (2) and the 2-3 parts by weight of the flame retardant are ground Dispersion grinding in the machine, the flame retardant is embedded in the surface of the phase change energy storage material particles, and sieved to obtain phase change energy storage powder.
[0022] 优选的， 所述导热剂为铝粉、 铜粉、 铁粉、 石墨粉中的至少一种。  [0022] Preferably, the heat conductive agent is at least one of aluminum powder, copper powder, iron powder, and graphite powder.
[0023] 优选的， 所述稳定剂可以根据产品的使用用途和需要， 选择使用具有不同稳定 性能的成分。 对于本发明所涉及的建筑材料而言， 例如至少选则包括常用的二 碱式硬脂酸铅、 月桂酸钡、 二乙酸正丁基锡、 抗氧剂 1010、 抗氧剂 168、 抗氧剂 [0023] Preferably, the stabilizer may select components having different stability properties according to the use and needs of the product. For the construction materials involved in the present invention, for example, at least one of the commonly used dibasic lead stearate, bismuth laurate, n-butyltin diacetate, antioxidant 1010, antioxidant 168, and antioxidant are included.
DLTP在内的热稳定剂和抗氧剂中的一种或多种。 One or more of a heat stabilizer and an antioxidant such as DLTP.
[0024] 优选的， 所述阻燃剂为磷酸酯、 含卤磷酸酯、 聚磷酸铵、 硼酸锌、 红磷、 氢氧 化镁、 氢氧化铝中的至少一种。 [0024] Preferably, the flame retardant is at least one of a phosphate ester, a halogen-containing phosphate, ammonium polyphosphate, zinc borate, red phosphorus, magnesium hydroxide, and aluminum hydroxide.
[0025] 优选的， 所述阻燃剂为纤维状氢氧化镁、 氢氧化铝中的至少一种。 其不但起阻 燃作用， 而且通过研磨后该阻燃剂镶嵌在相变储能材料颗粒表面， 从而改善与 相变储能粉与建筑材料的相容性。 [0025] Preferably, the flame retardant is at least one of fibrous magnesium hydroxide and aluminum hydroxide. It not only acts as a flame retardant, but also the flame retardant is embedded in the surface of the phase change energy storage material after grinding, thereby improving the compatibility with the phase change energy storage powder and the building material.
[0026] 一种如上述相变储能粉的制备方法， 其具体制备方法如下： [0026] A preparation method of the above phase change energy storage powder, the specific preparation method is as follows:
[0027] (1) 相变材料的表面改性： 将 80-85重量份的相变材料、 0.1-0.3重量份的防过 冷剂、 2-3重量份的活性剂研磨均匀， 得到改性相变材料； [0027] (1) Surface modification of the phase change material: 80-85 parts by weight of the phase change material, 0.1-0.3 parts by weight of the anti-supercoolant, and 2-3 parts by weight of the active agent are uniformly ground to obtain a modification Phase change material;
[0028] (2) 挤压包覆： 将步骤 （1) 得到的改性相变材料与 8-12重量份的包裹剂、 1-2 重量份的导热剂、 0.5-1重量份的稳定剂在高速混合机中分散均匀， 然后送入螺 杆挤出机， 螺杆挤出机的温度设置方式为： 一至三区 50°C~60°C; 四至六区 6°C~8[0028] (2) Extrusion coating: the modified phase change material obtained in the step (1) and 8-12 parts by weight of the encapsulant, 1-2 parts by weight of the thermal conductive agent, 0.5-1 part by weight of the stabilizer Disperse evenly in a high-speed mixer and then feed it into a screw extruder. The temperature setting of the screw extruder is: one to three zones 50 ° C ~ 60 ° C; four to six zones 6 ° C ~ 8
0°C; 七至九区 50°C~60°C; 十区 40°C; 螺杆转速为 50~100r/min; 物料由一区进 入经挤压包覆后从十区出料口排除， 相变材料没有完全熔融， 以粉末态被包裹 剂包覆， 得到粉状或颗粒状相变储能材料； 0 ° C; 7 to 9 zones 50 ° C ~ 60 ° C; 10 zones 40 ° C; screw speed 50 ~ 100r / min; material from a zone into the extrusion coating and removed from the 10 zone discharge port, The phase change material is not completely melted, and is coated with a coating agent in a powder state to obtain a powdery or granular phase change energy storage material;
[0029] (3) 研磨复合： 将步骤 （2) 得到的相变储能材料与 2-3重量份阻燃剂在研磨 机中分散研磨， 使阻燃剂镶嵌在相变储能材料颗粒表面， 并过筛得到相变储能 粉。 [0029] (3) Grinding and compounding: the phase change energy storage material obtained in the step (2) and 2-3 parts by weight of the flame retardant are dispersed and ground in a grinder to embed the flame retardant on the surface of the phase change energy storage material particle [0029] And sifting to obtain phase change energy storage powder.
[0030] 优选的， 所述的螺杆挤出机优选为同向双螺杆挤出机。 经螺杆强剪切挤压， 使 聚合物直接包覆粉状相变材料得到从而使相变材料定型。  [0030] Preferably, the screw extruder is preferably a co-rotating twin-screw extruder. The polymer is directly coated with a powdery phase change material by a strong shear extrusion of the screw to thereby shape the phase change material.
[0031] 优选的， 所述的螺杆挤出机优选为单螺杆挤出机。 [0031] Preferably, the screw extruder is preferably a single screw extruder.
[0032] 本发明提供一种相变储能粉， 采用高储能密度的无机水合盐为相变材料， 通过 交联防过冷解决了水合盐的过冷缺陷， 进一步利用螺杆挤出机挤压包覆使相变 材料表面裹覆一层导热薄膜， 解决了相变材料的渗漏、 导热不良的缺陷。 特别 是通过研磨复合， 将阻燃剂镶嵌在相变储能材料颗粒表面， 从而改善了阻燃性 并提升了相变储能粉与建筑材料的相容性。 从而极大地拓宽了相变储能粉的适 应范围。 在混凝土、 砂浆、 腻子、 涂料等加水体系中该相变储能粉具有良好的 分散性。 [0032] The present invention provides a phase change energy storage powder, using a high energy storage density of inorganic hydrated salt as a phase change material, through Cross-linked anti-cold solution solves the problem of over-cooling of hydrated salt, and further uses a screw extruder to coat and coat the surface of the phase change material with a heat-conducting film, which solves the defects of leakage and poor thermal conductivity of the phase-change material. In particular, by grinding and compounding, the flame retardant is embedded on the surface of the phase change energy storage material particles, thereby improving the flame retardancy and improving the compatibility of the phase change energy storage powder with the building material. Thereby greatly expanding the adaptation range of phase change energy storage powder. The phase change energy storage powder has good dispersibility in the watering system of concrete, mortar, putty, paint and the like.
发明的有益效果  Advantageous effects of the invention
有益效果  Beneficial effect
[0033] 本发明一种用于建筑节能的相变储能粉， 与现有技术相比突出的特点和有益的 效果在于：  [0033] A phase change energy storage powder for building energy saving according to the present invention has outstanding features and beneficial effects compared with the prior art:
[0034] 1、 本发明用于建筑节能的相变储能粉采用交联防过冷剂解决了无机相变材料 过冷现象， 储能密度超过 150KJ/kg。  [0034] 1. The phase change energy storage powder used in the building energy saving of the invention solves the supercooling phenomenon of the inorganic phase change material by using the crosslinked anti-supercoolant, and the storage energy density exceeds 150 KJ/kg.
[0035] 2、 本发明用于建筑节能的相变储能粉利用螺杆挤出机挤压包覆使相变材料表 面裹覆一层导热薄膜， 解决了相变材料的渗漏、 导热不良的缺陷。 [0035] 2. The phase change energy storage powder used in building energy-saving is extruded by a screw extruder to coat a surface of the phase change material with a heat conductive film, thereby solving the leakage of the phase change material and poor thermal conductivity. defect.
[0036] 3、 将阻燃剂镶嵌在相变储能材料颗粒表面， 从而改善了阻燃性并提升了相变 储能粉与建筑材料的相容性。 从而极大地拓宽了相变储能粉的适应范围。 在混 凝土、 砂浆、 腻子、 涂料中作为填料直接加入使用。 [0036] 3. The flame retardant is embedded on the surface of the phase change energy storage material particle, thereby improving the flame retardancy and improving the compatibility of the phase change energy storage powder with the building material. Thereby greatly expanding the adaptation range of phase change energy storage powder. It is directly used as a filler in concrete, mortar, putty and paint.
本发明的实施方式 Embodiments of the invention
[0037] 以下具体实施方式， 对本发明的上述内容再作进一步的详细说明。 但不应将此 理解为本发明上述主题的范围仅限于以下的实例。 在不脱离本发明上述技术思 想情况下， 根据本领域普通技术知识和惯用手段做出的各种替换或变更， 均应 包括在本发明的范围内。  [0037] The above description of the present invention will be further described in detail in the following detailed description. However, the scope of the above-mentioned subject matter of the present invention should not be construed as being limited to the following examples. Various alterations and modifications may be made without departing from the spirit and scope of the invention.
[0038] 实施例 1  Embodiment 1
[0039] (1) 相变材料的表面改性： 将 40重量份的六水氯化钙、 45重量份的十水硫酸 钠相变材料、 0.1重量份的偏铝酸钠、 2重量份的甘油脂肪酸酯细化成粒径小于 2μ m的粉体， 得到改性相变材料；  (1) Surface modification of phase change material: 40 parts by weight of calcium chloride hexahydrate, 45 parts by weight of sodium sulfate dehydration phase change material, 0.1 part by weight of sodium metaaluminate, 2 parts by weight The glycerin fatty acid ester is refined into a powder having a particle diameter of less than 2 μm to obtain a modified phase change material;
[0040] (2) 挤压包覆： 将步骤 （1) 得到的改性相变材料与 12重量份的乙烯-醋酸乙 烯共聚物、 2重量份的铝粉、 0.5重量份的抗氧剂 1010在高速混合机中分散均匀， 然后送入螺杆挤出机， 螺杆挤出机的温度设置方式为： 一至三区 50。C~60。C; 四 至六区 6°C~80°C; 七至九区 50°C~60°C; 十区 40°C; 螺杆转速为 50~100r/min; 物 料由一区进入经挤压包覆后从十区出料口排除， 相变材料没有完全熔融， 以粉 末态被包裹剂包覆， 使乙烯 -醋酸乙烯共聚物包覆相变材料， 得到颗粒状相变储 能材料； [0040] (2) extrusion coating: the modified phase change material obtained in the step (1) and 12 parts by weight of ethylene-acetic acid B The olefin copolymer, 2 parts by weight of aluminum powder, and 0.5 parts by weight of the antioxidant 1010 were uniformly dispersed in a high-speed mixer, and then fed to a screw extruder, and the temperature setting of the screw extruder was as follows: one to three zones 50. C~60. C; four to six zones 6 ° C ~ 80 ° C; seven to nine zones 50 ° C ~ 60 ° C; ten zones 40 ° C; screw speed of 50 ~ 100r / min; materials from a zone into the extrusion coating After the exclusion from the discharge port of the ten zone, the phase change material is not completely melted, and is coated with a coating agent in a powder state, and the ethylene-vinyl acetate copolymer is coated with the phase change material to obtain a particulate phase change energy storage material;
[0041] (3) 研磨复合： 将步骤 （2) 得到的相变储能材料与 2重量份聚磷酸铵、 1重量 份氢氧化镁纤维在研磨机中分散研磨， 使阻燃剂镶嵌在相变储能材料颗粒表面 ， 并过筛得到相变储能粉。  [0041] (3) Grinding and compounding: the phase change energy storage material obtained in the step (2) is dispersed and ground in a grinder with 2 parts by weight of ammonium polyphosphate and 1 part by weight of magnesium hydroxide fiber, and the flame retardant is embedded in the phase. The surface of the energy storage material particles is changed and sieved to obtain a phase change energy storage powder.
[0042] 采用 DSC  [0042] Adopt DSC
曲线测试， 升温速率 5°C/min， 测出相变储能粉的储能密度为 165KJ/kg， 与水泥 砂浆相容性良好无离析。  The curve test, heating rate 5 ° C / min, measured the phase change energy storage powder storage density of 165KJ / kg, good compatibility with cement mortar without segregation.
[0043] 实施例 2 Embodiment 2
[0044] (1) 相变材料的表面改性： 将 50重量份的十二水磷酸氢二钠、 30重量份的三 水乙酸钠、 0.2重量份的硼酸钠防过冷剂、 3重量份的钛酸酯偶细化成粒径小于 2μ m的粉体， 得到改性相变材料；  (1) Surface modification of phase change material: 50 parts by weight of disodium hydrogen phosphate dodecahydrate, 30 parts by weight of sodium acetate trihydrate, 0.2 parts by weight of sodium borate anti-supercoolant, and 3 parts by weight The titanate is refined into a powder having a particle diameter of less than 2 μm to obtain a modified phase change material;
[0045] (2) 挤压包覆： 将步骤 （1) 得到的改性相变材料与 10重量份的聚丙烯蜡、 1 重量份的导热剂石墨粉、 0.8重量份的月桂酸钡稳定剂在高速混合机中分散均匀 ， 然后送入双螺杆螺杆挤出机， 螺杆挤出机的温度设置方式为： 一至三区 50°C~ 60°C; 四至六区 6°C~80°C; 七至九区 50°C~60°C; 十区 40°C; 螺杆转速为 50~100r/ min; 物料由一区进入经挤压包覆后从十区出料口排除， 相变材料没有完全熔融 ， 以粉末态被包裹剂包覆， 使聚丙烯蜡包覆相变材料， 得到粉状相变储能材料  [0045] (2) extrusion coating: the modified phase change material obtained in the step (1) and 10 parts by weight of the polypropylene wax, 1 part by weight of the thermal conductive graphite powder, 0.8 parts by weight of strontium laurate stabilizer Disperse evenly in a high-speed mixer, and then sent to a twin-screw screw extruder. The temperature setting of the screw extruder is: one to three zones 50 ° C ~ 60 ° C; four to six zones 6 ° C ~ 80 ° C; 7 to 9 zones 50 ° C ~ 60 ° C; 10 zones 40 ° C; screw speed 50 ~ 100r / min; material from a zone into the extrusion coating and removed from the 10 zone discharge port, phase change materials are not Completely melted, coated with a coating agent in a powder state, and coated with a polypropylene wax to form a phase change material to obtain a powdery phase change energy storage material.
[0046] (3) 研磨复合： 将步骤 （2) 得到的相变储能材料与 3重量份阻燃剂含卤磷酸 酯在研磨机中分散研磨， 使阻燃剂镶嵌在相变储能材料颗粒表面， 并过筛得到 相变储能粉。 [0046] (3) Grinding and compounding: the phase change energy storage material obtained in the step (2) and 3 parts by weight of the halogenated halogen-containing phosphoric acid ester are dispersed and ground in a grinder to embed the flame retardant in the phase change energy storage material. The surface of the particles is sieved to obtain a phase change energy storage powder.
[0047] 采用 NETZSCH DSC 204F1进行 DSC曲线测试， 升温速率 5°C/min， 测出相变储 能粉的储能密度为 210KJ/kg， 经 200次冷热循无析出。 可快速分散在水中， 用于 室内腻子相容性良好无离析。 [0047] The DSC curve test was carried out by using NETZSCH DSC 204F1, and the heating rate was measured at a heating rate of 5 ° C/min. The storage density of the phase change energy storage powder was 210 KJ/kg, and no precipitation occurred after 200 hot and cold cycles. Can be quickly dispersed in water, used The interior putty has good compatibility and no segregation.
[0048] 实施例 3  Embodiment 3
[0049] ( 1) 相变材料的表面改性： 将 35重量份的十水硫酸钠、 45重量份的三水乙酸 钠、 0.3重量份的防过冷剂焦锑酸钾、 2重量份的聚氧乙烯脂肪酸甘油酯细化成粒 径小于 2μηι的粉体， 得到改性相变材料；  (1) Surface modification of phase change material: 35 parts by weight of sodium sulfate decahydrate, 45 parts by weight of sodium acetate trihydrate, 0.3 parts by weight of anti-cold agent potassium pyroantimonate, 2 parts by weight The polyoxyethylene fatty acid glyceride is refined into a powder having a particle diameter of less than 2 μm to obtain a modified phase change material;
[0050] (2) 挤压包覆： 将步骤 （1) 得到的改性相变材料与 8重量份的松香、 2重量份 的导热剂铜粉、 0.6重量份的稳定剂抗氧剂 DLTP在高速混合机中分散均匀， 然后 送入螺杆挤出机， 螺杆挤出机的温度设置方式为： 一至三区 50。C~60。C; 四至六 区 6°C~80°C; 七至九区 50°C~60°C; 十区 40°C; 螺杆转速为 50~100r/min; 物料由 一区进入经挤压包覆后从十区出料口排除， 相变材料没有完全熔融， 以粉末态 被包裹剂包覆， 使松香包覆相变材料， 得到粉状相变储能材料；  [0050] (2) Extrusion coating: The modified phase change material obtained in the step (1) is mixed with 8 parts by weight of rosin, 2 parts by weight of a thermal conductive agent copper powder, and 0.6 parts by weight of a stabilizer antioxidant DLTP. Disperse evenly in a high-speed mixer and then feed it into a screw extruder. The temperature setting of the screw extruder is: one to three zones 50. C~60. C; four to six zones 6 ° C ~ 80 ° C; seven to nine zones 50 ° C ~ 60 ° C; ten zones 40 ° C; screw speed of 50 ~ 100r / min; materials from a zone into the extrusion coating After the exclusion from the discharge of the ten zone, the phase change material is not completely melted, and is coated with the coating agent in a powder state, so that the rosin is coated with the phase change material to obtain a powdery phase change energy storage material;
[0051] (3) 研磨复合： 将步骤 （2) 得到的相变储能材料与 2重量份阻燃剂红磷， 0.5 重量份硼酸锌研磨机中分散研磨， 使阻燃剂镶嵌在相变储能材料颗粒表面， 并 过筛得到相变储能粉。  [0051] (3) Grinding and compounding: the phase change energy storage material obtained in the step (2) is dispersed and ground with 2 parts by weight of the flame retardant red phosphorus, 0.5 parts by weight of a zinc borate grinder, and the flame retardant is embedded in the phase change. The surface of the energy storage material particles is sieved to obtain a phase change energy storage powder.
[0052] 采用 NETZSCH DSC 204F1进行 DSC曲线测试， 升温速率 5°C/min， 测出相变储 能粉的储能密度为 196 KJ/kg, 相变温度为 36°C, 80°C条件下热处理 2小吋后在滤 纸渗出比率为零。  [0052] DSC curve test was carried out by using NETZSCH DSC 204F1, the heating rate was 5 °C/min, and the storage density of the phase change energy storage powder was 196 KJ/kg, and the phase transition temperature was 36 °C, 80 °C. After 2 hours of heat treatment, the bleed out ratio on the filter paper was zero.
[0053] 实施例 4  Example 4
[0054] ( 1) 相变材料的表面改性： 将 40重量份的六水氯化钙、 40重量份的三水乙酸 钠相变材料、 0.2重量份的偏铝酸钠、 2重量份的铝酸酯偶联细化成粒径小于 2μηι 的粉体， 得到改性相变材料；  (1) Surface modification of phase change material: 40 parts by weight of calcium chloride hexahydrate, 40 parts by weight of sodium acetate sodium phase change material, 0.2 parts by weight of sodium metaaluminate, 2 parts by weight The aluminate coupling is refined into a powder having a particle diameter of less than 2 μm to obtain a modified phase change material;
[0055] (2) 挤压包覆： 将步骤 （1) 得到的改性相变材料与 10重量份的聚己内酯、 2 重量份的铁粉、 0.5重量份的二碱式硬脂酸铅在高速混合机中分散均匀， 然后送 入单螺杆挤出机， 螺杆挤出机的温度设置方式为一至三区 50。C~60。C; 四至六区 6 °C~80°C; 七至九区 50°C~60°C; 十区 40°C; 螺杆转速为 50~100r/min; 物料由一 区进入经挤压包覆后从十区出料口排除相变材料没有完全熔融， 以粉末态被包 裹剂包覆， ， 使聚己内酯包覆相变材料， 得到颗粒状相变储能材料；  (2) Extrusion coating: the modified phase change material obtained in the step (1) is 10 parts by weight of polycaprolactone, 2 parts by weight of iron powder, and 0.5 parts by weight of dibasic stearic acid. The lead is uniformly dispersed in a high-speed mixer and then fed to a single-screw extruder. The temperature of the screw extruder is set to one to three zones 50. C~60. C; 4 to 6 zones 6 °C ~ 80 °C; 7 to 9 zones 50 °C ~ 60 °C; 10 zones 40 ° C; screw speed 50~100r / min; materials from a zone into the extrusion coating After removing the phase change material from the discharge port of the ten zone, it is not completely melted, and is coated with the coating agent in a powder state, so that the polycaprolactone is coated with the phase change material to obtain a granular phase change energy storage material;
[0056] (3) 研磨复合： 将步骤 （2) 得到的相变储能材料与 2重量份氢氧化铝纤维、 1 重量份含¾磷酸酯在研磨机中分散研磨， 使阻燃剂镶嵌在相变储能材料颗粒表 面， 并过筛得到相变储能粉。 [0056] (3) Grinding compound: the phase change energy storage material obtained in the step (2) and 2 parts by weight of aluminum hydroxide fiber, 1 The parts by weight of the 3⁄4 phosphate ester are dispersed and ground in a grinder, and the flame retardant is embedded on the surface of the phase change energy storage material particles, and sieved to obtain a phase change energy storage powder.
[0057] 采用 DSC  [0057] Using DSC
曲线测试， 升温速率 5°C/min， 测出相变储能粉的储能密度为 177KJ/kg， 与混凝 土相容性良好无离析。  The curve test, heating rate 5 ° C / min, measured the phase change energy storage powder storage density of 177KJ / kg, good compatibility with concrete without segregation.
工业实用性  Industrial applicability
[0058] 本发明用于建筑节能的相变储能粉采用常规廉价的无机相变材料， 生产技术工 艺简短， 可连续化操作， 易于实施与控制， 成本低廉， 利于工业化生产。  [0058] The phase change energy storage powder used for building energy conservation adopts conventional and cheap inorganic phase change materials, the production technology is short, can be continuously operated, is easy to implement and control, and has low cost and is favorable for industrial production.

Claims

权利要求书 [权利要求 1] 一种用于建筑节能的相变储能粉， 其特征是含有防过冷剂并经螺杆挤 压包覆的粉末型储能材料， 由如下重量份的原料制备而成： 相变材料 80-85份， 活性剂 2-3份， 防过冷剂 0.1-0.3份， 包裹剂 8-12份， 导热剂 1-2份， 稳定剂 0.5-1份， 阻燃剂 2-3份， 其中， 所述的相变材料为六水氯化钙、 十水硫酸钠、 十二水磷酸氢二 钠、 三水乙酸钠中的至少一种； 所述的防过冷剂为硼酸钠、 偏铝酸钠 、 焦锑酸钾中的至少一种； 所述的活性剂为甘油脂肪酸酯、 聚氧乙烯 脂肪酸甘油酯、 硅烷偶联剂、 钛酸酯偶联剂、 铝酸酯偶联剂中的至少 一种； 所述的包裹剂为乙烯 -醋酸乙烯共聚物、 聚己内酯、 聚乙烯蜡 、 聚丙烯蜡、 松香中的至少一种； 所述相变储能粉， 由如下方法制备 而得： Claims [Claim 1] A phase change energy storage powder for building energy conservation, characterized by a powder-type energy storage material containing anti-supercooling agent and coated by screw extrusion, prepared from the following raw materials by weight Made of: 80-85 parts of phase change material, 2-3 parts of active agent, 0.1-0.3 parts of anti-supercooling agent, 8-12 parts of wrapping agent, 1-2 parts of thermal conductive agent, 0.5-1 part of stabilizer, flame retardant 2-3 parts of the agent, wherein the phase change material is at least one of calcium chloride hexahydrate, sodium sulfate decahydrate, disodium hydrogen phosphate dodecahydrate, and sodium acetate trihydrate; the anti-supercooling The agent is at least one of sodium borate, sodium metaaluminate, and potassium pyroantimonate; the active agent is glycerin fatty acid ester, polyoxyethylene fatty acid glyceride, silane coupling agent, titanate coupling agent, At least one of aluminate coupling agents; the wrapping agent is at least one of ethylene-vinyl acetate copolymer, polycaprolactone, polyethylene wax, polypropylene wax, and rosin; the phase change storage Energy powder is prepared by the following method:
(1) 相变材料的表面改性： 将 80-85重量份的相变材料、 0.1-0.3重量 份的防过冷剂、 2-3重量份的活性剂研磨均匀， 得到改性相变材料； (1) Surface modification of phase change material: Grind 80-85 parts by weight of phase change material, 0.1-0.3 parts by weight of anti-supercooling agent, and 2-3 parts by weight of active agent evenly to obtain a modified phase change material. ;
(2) 挤压包覆： 将步骤 （1) 得到的改性相变材料与 8-12重量份的包 裹剂、 1-2重量份的导热剂、 0.5-1重量份的稳定剂在高速混合机中分 散均匀， 然后送入螺杆挤出机， 螺杆挤出机的温度设置方式为： 一至 三区 50°C~60°C; 四至六区 6°C~80°C; 七至九区 50°C~60°C; 十区 40°C(2) Extrusion coating: Mix the modified phase change material obtained in step (1) with 8-12 parts by weight of coating agent, 1-2 parts by weight of thermal conductive agent, and 0.5-1 parts by weight of stabilizer at high speed. The mixture is evenly dispersed in the machine and then fed into the screw extruder. The temperature setting method of the screw extruder is: Zones 1 to 3: 50°C~60°C; Zones 4 to 6: 6°C~80°C; Zones 7 to 9: 50 °C~60°C; Zone 10 40°C
； 螺杆转速为 50~100r/min ; 物料由一区进入经挤压包覆后从十区出 料口排除， 相变材料没有完全熔融， 以粉末态被包裹剂包覆， 得到粉 状或颗粒状相变储能材料； ; The screw speed is 50~100r/min ; The material enters the first zone and is extruded and coated and then discharged from the outlet of the tenth zone. The phase change material is not completely melted and is coated with the coating agent in a powdery state, resulting in powdery or Granular phase change energy storage materials;
(3) 研磨复合： 将步骤 （2) 得到的相变储能材料与 2-3重量份阻燃 剂在研磨机中分散研磨， 使阻燃剂镶嵌在相变储能材料颗粒表面， 并 过筛得到相变储能粉。 (3) Grinding and compounding: Disperse and grind the phase change energy storage material obtained in step (2) and 2-3 parts by weight of the flame retardant in a grinder, so that the flame retardant is embedded on the surface of the phase change energy storage material particles, and Sieve to obtain phase change energy storage powder.
2.根据权利要求 1所述用于建筑节能的相变储能粉， 其特征在于： 所 述稳定剂选用二碱式硬脂酸铅、 月桂酸钡、 二乙酸正丁基锡、 抗氧剂 1010、 抗氧剂 168、 抗氧剂 DLTP在内的热稳定剂和抗氧剂中的一种或 多种。 2. Phase change energy storage powder for building energy saving according to claim 1, characterized in that: the stabilizer is selected from dibasic lead stearate, barium laurate, n-butyltin diacetate, antioxidant 1010, Antioxidant 168, one or more of heat stabilizers and antioxidants including antioxidant DLTP.
3.根据权利要求 1所述用于建筑节能的相变储能粉， 其特征在于： 所 述导热剂为铝粉、 铜粉、 铁粉、 石墨粉中的至少一种。 3. The phase change energy storage powder for building energy saving according to claim 1, characterized in that: the thermal conductive agent is at least one of aluminum powder, copper powder, iron powder and graphite powder.
4.根据权利要求 1所述用于建筑节能的相变储能粉， 其特征在于： 所 述阻燃剂为磷酸酯、 含¾磷酸酯、 聚磷酸铵、 硼酸锌、 红磷、 氢氧化 镁、 氢氧化铝中的至少一种。 4. The phase change energy storage powder for building energy saving according to claim 1, characterized in that: the flame retardant is phosphate ester, triphosphate-containing phosphate ester, ammonium polyphosphate, zinc borate, red phosphorus, magnesium hydroxide , at least one of aluminum hydroxide.
5.根据权利要求 1所述用于建筑节能的相变储能粉， 其特征在于： 所 述阻燃剂为纤维状氢氧化镁、 氢氧化铝中的至少一种。 5. The phase change energy storage powder for building energy saving according to claim 1, characterized in that: the flame retardant is at least one of fibrous magnesium hydroxide and aluminum hydroxide.
6.—种如权利要求 1所述用于建筑节能的相变储能粉的制备方法， 其 特征在于： 包括以下步骤： 6. A method for preparing phase change energy storage powder for building energy saving as claimed in claim 1, characterized in that: it includes the following steps:
(1) 相变材料的表面改性： 将 80-85重量份的相变材料、 0.1-0.3重量 份的防过冷剂、 2-3重量份的活性剂研磨均匀， 得到改性相变材料； (1) Surface modification of phase change material: Grind 80-85 parts by weight of phase change material, 0.1-0.3 parts by weight of anti-supercooling agent, and 2-3 parts by weight of active agent evenly to obtain a modified phase change material. ;
(2) 挤压包覆： 将步骤 （1) 得到的改性相变材料与 8-12重量份的包 裹剂、 1-2重量份的导热剂、 0.5-1重量份的稳定剂在高速混合机中分 散均匀， 然后送入螺杆挤出机， 螺杆挤出机的温度设置方式为： 一至 三区 50°C~60°C; 四至六区 6°C~80°C; 七至九区 50°C~60°C; 十区 40°C(2) Extrusion coating: Mix the modified phase change material obtained in step (1) with 8-12 parts by weight of coating agent, 1-2 parts by weight of thermal conductive agent, and 0.5-1 parts by weight of stabilizer at high speed. The mixture is evenly dispersed in the machine and then fed into the screw extruder. The temperature setting method of the screw extruder is: Zones 1 to 3: 50°C~60°C; Zones 4 to 6: 6°C~80°C; Zones 7 to 9: 50 °C~60°C; Zone 10 40°C
； 螺杆转速为 50~100r/min ; 物料由一区进入经挤压包覆后从十区出 料口排除， 相变材料没有完全熔融， 以粉末态被包裹剂包覆， 得到粉 状或颗粒状相变储能材料； ; The screw speed is 50~100r/min ; The material enters the first zone and is extruded and coated and then discharged from the outlet of the tenth zone. The phase change material is not completely melted and is coated with the coating agent in a powdery state, resulting in powdery or Granular phase change energy storage materials;
(3) 研磨复合： 将步骤 （2) 得到的相变储能材料与 2-3重量份阻燃 剂在研磨机中分散研磨， 使阻燃剂镶嵌在相变储能材料颗粒表面， 并 过筛得到相变储能粉。 (3) Grinding and compounding: Disperse and grind the phase change energy storage material obtained in step (2) and 2-3 parts by weight of the flame retardant in a grinder, so that the flame retardant is embedded on the surface of the phase change energy storage material particles, and Sieve to obtain phase change energy storage powder.
7.根据权利要求 6所述用于建筑节能的相变储能粉的制备方法， 其特 征在于： 所述的螺杆挤出机为同向双螺杆挤出机。 7. The method for preparing phase change energy storage powder for building energy saving according to claim 6, characterized in that: the screw extruder is a co-rotating twin-screw extruder.
8.根据权利要求 6所述用于建筑节能的相变储能粉的制备方法， 其特 征在于： 所述的螺杆挤出机为单螺杆挤出机。 8. The method for preparing phase change energy storage powder for building energy saving according to claim 6, characterized in that: the screw extruder is a single screw extruder.
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