WO2018058399A1 - 一种钨酸铯纳米隔热浆料、涂料及其制备方法 - Google Patents

一种钨酸铯纳米隔热浆料、涂料及其制备方法 Download PDF

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WO2018058399A1
WO2018058399A1 PCT/CN2016/100712 CN2016100712W WO2018058399A1 WO 2018058399 A1 WO2018058399 A1 WO 2018058399A1 CN 2016100712 W CN2016100712 W CN 2016100712W WO 2018058399 A1 WO2018058399 A1 WO 2018058399A1
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tungstate nano
barium tungstate
slurry
insulation
insulation slurry
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PCT/CN2016/100712
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English (en)
French (fr)
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吕维忠
郑威猛
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深圳大学
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Priority to PCT/CN2016/100712 priority Critical patent/WO2018058399A1/zh
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04Polyurethanes
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/32Radiation-absorbing paints

Definitions

  • the invention relates to the field of nano materials, in particular to a barium tungstate nano heat insulation slurry, a coating and a preparation method thereof.
  • Bismuth tungstate (Cs 2 WO 4 ) is a new material that has been discovered in recent years. At present, some famous coating companies such as Japan, Germany, and the United States have vigorously developed transparent heat-insulating coatings of barium tungstate. Barium tungstate nano-slurry is a nano-paste that has the best absorption capacity in the near-infrared. It has strong absorption characteristics not only in the near-infrared region, but also has strong transmission characteristics in the visible region, and is in the ultraviolet region. Also has a strong shielding characteristics. Because barium tungstate nano-slurry has outstanding near-infrared absorption and visible light transmission characteristics, it has broad application prospects in many fields such as building glass insulation, automobile film, sunshade insulation, plastic greenhouses and so on.
  • the current nano-insulation coatings on the market have the following problems: 1.
  • the particle size of the heat-insulating particles is too large, resulting in low transmittance, excessive haze, and poor heat insulation effect;
  • the surface treatment of the heat-insulating particles in the coating does not close, resulting in excessive haze and storage time;
  • the selected insulation particles are single, mostly ITO or ATO, can not be fully effective control Solar spectral radiation at a wavelength of 800-2500 nm;
  • the weather resistance is poor, and problems such as fading and poor heat insulation effect may occur during long-term use.
  • the thermal insulation coating using barium tungstate nano slurry has the advantages of good stability, good heat insulation effect, high visible light transmittance, strong hardness, strong adhesion, weather resistance, low cost and large-scale production.
  • a method for preparing a barium tungstate nano-insulation slurry comprises the steps of: solvent 67-80%, barium tungstate nano powder 10-30% and dispersant 2-10%, pre-dispersed by stirring or ultrasonication, followed by grinding and dispersion to obtain a barium tungstate nano-insulation slurry.
  • the preparation method of the barium tungstate nano heat-insulating slurry wherein, in the grinding and dispersing, the filling volume of the grinding ball is controlled to be 70-90%, and the grinding time is 5-10h.
  • the barium tungstate nano-insulation slurry wherein the barium tungstate nano-insulation slurry has a particle size below 100 nm, and the solid content is 10-30wt%.
  • a barium tungstate nano-insulating water-based paint which is prepared by weight percentage, including the following components: 10-30% Barium tungstate nano-insulation paste, 30-65% water-based resin, 1-10% paint additive, 15-55%
  • the solvent of the barium tungstate nano-insulation slurry is a barium tungstate nano-insulation slurry as described above.
  • the barium tungstate nano-insulating water-based paint wherein the water-based resin is one of an aqueous polyurethane resin and an aqueous acrylic resin.
  • the barium tungstate nano-insulating water-based paint wherein the paint auxiliary agent comprises at least one of a dispersant, a film-forming aid, a leveling agent, an antifoaming agent, and a thickener.
  • the barium tungstate nano-insulation slurry prepared by the method of the invention is extremely stable, and has strong absorption to sunlight, ensuring high visible light transmission and effective control of solar radiation.
  • the preparation method has the advantages of simple preparation method, low production cost, large-scale production, and simple and high-efficiency preparation of barium tungstate nano-insulating water-based paint, which has high visible light transmittance, high infrared and ultraviolet blocking rate, and hardness. Strong, strong adhesion and weather resistance.
  • the present invention provides a barium tungstate nano-insulation slurry, a coating material and a preparation method thereof.
  • a barium tungstate nano-insulation slurry a coating material and a preparation method thereof.
  • a method for preparing a barium tungstate nano-insulation slurry of the present invention comprising the steps of: 67-80% of solvent , barium tungstate nano powder 10-30% and dispersant 2-10% Pre-dispersion is carried out under the action of stirring or ultrasonication, followed by grinding and dispersion to obtain a barium tungstate nano-insulation slurry.
  • the barium tungstate nano-insulation slurry prepared by the method of the invention is extremely stable and has strong absorption to sunlight, ensuring high visible light transmission and effective control of solar radiation.
  • the solvent of the invention is deionized water.
  • the dispersant may be a polymeric anionic dispersant.
  • the present invention places the pre-dispersion in a grinder or a sander for grinding and dispersing to obtain a barium tungstate nano-insulation slurry.
  • the filling volume of the grinding ball is controlled to be 70-90%, and the grinding time is 5-10h.
  • the present invention also provides a barium tungstate nano-insulation slurry, which is prepared by the method for preparing a barium tungstate nano-insulation slurry as described above.
  • the average particle size of the barium tungstate nano-insulation slurry is 100 nm
  • the solid content is 10-30% by weight.
  • the invention also provides a barium tungstate nano-insulating water-based paint, wherein the following components are made by weight percentage: 10-30% Barium tungstate nano-insulation paste, 30-65% water-based resin, 1-10% paint additive, 15-55% a solvent (such as deionized water); the barium tungstate nano-insulation slurry is a barium tungstate nano-insulation slurry as described above.
  • the aqueous resin is one of an aqueous polyurethane resin and an aqueous acrylic resin.
  • the coating aid of the present invention comprises at least one of a dispersing agent, a film forming aid, a leveling agent, an antifoaming agent and a thickening agent.
  • the dispersing agent may be a polymeric anionic dispersing agent
  • the film forming aid may be at least one of ethylene glycol monobutyl ether and dipropylene glycol butyl ether
  • the leveling agent may be an acrylic copolymer or Non-reactive polyether modified polysiloxane
  • the antifoaming agent may be a non-silicone containing hydrophobic particle mineral mixture
  • the thickening agent may be a modified polyurethane thickener or a sodium polyacrylate thickener.
  • the invention also provides a preparation method of the barium tungstate nano-insulating water-based paint according to any one of the above, wherein, according to the above formula, the barium tungstate nano-insulation slurry is added to the water-based resin, and the mixture is stirred and dispersed. Minutes, then add paint auxiliaries, solvents, stir and mix evenly, that is, the strontium tungstate nano-insulating water-based paint is prepared.
  • barium tungstate nano-insulating waterborne coatings are made up of the following components:
  • Adhesion promoter 1% Adhesion promoter 1% ;
  • barium tungstate nano-insulating waterborne coatings are made up of the following components:
  • Adhesion promoter 1% Adhesion promoter 1% ;
  • barium tungstate nano-insulating waterborne coatings are made up of the following components:
  • Adhesion promoter 1% Adhesion promoter 1% ;
  • barium tungstate nano-insulating waterborne coatings are made up of the following components:
  • Adhesion promoter 1% Adhesion promoter 1% ;
  • the present invention provides a barium tungstate nano heat-insulating slurry, a coating and a preparation method thereof
  • the nano-insulating slurry of barium tungstate prepared by the method of the invention is extremely stable, and has strong absorption to sunlight, ensuring high visible light transmission and effective control of solar radiation.
  • the preparation method has the advantages of simple preparation method, low production cost, large-scale production, and simple and high-efficiency preparation of barium tungstate nano-insulating water-based paint, which has high visible light transmittance, high infrared and ultraviolet blocking rate, and hardness. Strong, strong adhesion and weather resistance.

Abstract

一种钨酸铯纳米隔热浆料,其制备方法包括:将重量百分比为67-80%的溶剂、10-30%的钨酸铯纳米粉体和2-10%的分散剂,在搅拌或超声波破碎的作用下进行预分散,接着进行研磨分散,得到钨酸铯纳米隔热浆料。该浆料稳定,对太阳光有强烈吸收,可用于制备隔热水性涂料。按重量百分比计,该水性涂料包括10-30%的钨酸铯纳米隔热浆料、30-65%的水性树脂、1-10%的涂料助剂和15-55%的溶剂。

Description

一种钨酸铯纳米隔热浆料、涂料及其制备方法
技术领域
本发明涉及纳米材料领域,尤其涉及一种钨酸铯纳米隔热浆料、涂料及其制备方法。
背景技术
随着科学技术的发展与社会生产的快速发展,能源和环境成为社会日益瞩目的两大问题,从而为节能和环境提出了更高要求。现代建筑广泛采用大面积玻璃窗及豪华气派的玻璃幕墙,每到夏天,空调、风扇等降温设备所消耗的能源,占每年能源消耗的 20% ,造成了极大浪费,因此具有热反射及热吸收性能的玻璃表面涂层对于建筑节能有着十分重要的意义。但目前玻璃反射膜和吸收膜以及金属镀膜玻璃的制备需要特殊的工艺和设备,生产工艺复杂,设备投入巨大,生产耗电量高,不利于市场大面积推广。
钨酸铯( Cs2WO4 )是近几年才被发现的新材料,目前一些日本、德国、美国等有名的涂料公司均大力发展钨酸铯的透明隔热涂料。钨酸铯纳米浆料是对近红外具有最佳吸收能力的一种纳米浆料,它不仅在近红外区域具有极强吸收特性,同时在可见光区域具有较强透过特性,而且在紫外光区域也具有较强屏蔽特性。因钨酸铯纳米浆料具有突出近红外吸收、可见光透射特征,所以在建筑玻璃隔热、汽车贴膜、遮阳隔热、塑料温室大棚等多行业领域已具有广阔的应用前景。
但是,目前市场上的纳米隔热涂料存在以下问题: 1 、隔热粒子粒径过大,导致透过率低,雾度过大,隔热效果差; 2 、涂料内隔热粒子表面处理不过关,导致雾度过大以及存放时间不长; 3 、选用的隔热粒子品种单一,多为 ITO 或 ATO ,不能完全有效的控制 800-2500nm 波长内太阳光谱辐射; 4 、耐候性能差,长时间使用会出现褪色及隔热效果变差等问题。而使用钨酸铯纳米浆料的隔热涂料具有稳定性好、隔热效果好、可见光透过率高、硬度强、附着力强、耐候、成本低和能大规模生产等优点。
因此,现有技术还有待于改进和发展。
发明内容
鉴于上述现有技术的不足,本发明的目的 在 于提供 一种 钨酸铯纳米隔热浆料、涂料及其制备方法。
本发明的技术方案如下:
一种钨酸铯纳米隔热浆料的制备方法,其中,按重量百分比计,包括步骤:将溶剂 67-80% 、钨酸铯纳米粉体 10-30% 和分散剂 2-10% ,在搅拌或超声波破碎的作用下进行预分散,接着进行研磨分散,得到钨酸铯纳米隔热浆料。
所述的钨酸铯纳米隔热浆料的制备方法,其中,所述溶剂为去离子水。
所述的钨酸铯纳米隔热浆料的制备方法,其中,所述分散剂为聚合物性阴离子分散剂。
所述的钨酸铯纳米隔热浆料的制备方法,其中,研磨分散时,控制研磨球的填充体积为 70-90% ,研磨时间为 5-10h 。
一种钨酸铯纳米隔热浆料,其中,采用如上任一所述的钨酸铯纳米隔热浆料的制备方法制备而成。
所述的钨酸铯纳米隔热浆料,其中,所述钨酸铯纳米隔热浆料的粒径在 100nm 以下,固含量在 10-30wt% 。
一种钨酸铯纳米隔热水性涂料,其中,按重量百分比计,包括以下组分制成: 10-30% 的钨酸铯纳米隔热浆料、 30-65% 的水性树脂、 1-10% 的涂料助剂、 15-55% 的溶剂;所述钨酸铯纳米隔热浆料为如上任一所述的钨酸铯纳米隔热浆料。
所述的钨酸铯纳米隔热水性涂料,其中,所述水性树脂为水性聚氨酯树脂、水性丙烯酸树脂中的一种。
所述的钨酸铯纳米隔热水性涂料,其中,所述涂料助剂包括分散剂、成膜助剂、流平剂、消泡剂和增稠剂中的至少一种。
一种如上任一所述的钨酸铯纳米隔热水性涂料的制备方法,其中,按照上述配方,将钨酸铯纳米隔热浆料加到水性树脂中,搅拌分散 10-30 分钟,再加入涂料助剂、溶剂,搅拌混合均匀,即制得钨酸铯纳米隔热水性涂料。
有益效果:本发明方法制得的钨酸铯纳米隔热浆料极其稳定,且对太阳光有强烈吸收,保证高可见光透过的同时,能有效控制太阳辐射。另外,本发明制备方法简单、生产成本低廉,能大规模生产;且能够简单、高效的制备钨酸铯纳米隔热水性涂料,该涂料具有可见光透过率高、红外线及紫外线阻隔率高、硬度强、附着力强和耐候等优点。
具体实施方式
本发明提供一种钨酸铯纳米隔热浆料、涂料及其制备方法,为使本发明的目的、技术方案及效果更加清楚、明确,以下对本发明进一步详细说明。应当理解,此处所描述的具体实施例仅仅用以解释本发明,并不用于限定本发明。
本发明的一种钨酸铯纳米隔热浆料的制备方法,其中,按重量百分比计,包括步骤:将溶剂 67-80% 、钨酸铯纳米粉体 10-30% 和分散剂 2-10% ,在搅拌或超声波破碎的作用下进行预分散,接着进行研磨分散,得到钨酸铯纳米隔热浆料。本发明方法制得的钨酸铯纳米隔热浆料极其稳定,且对太阳光有强烈吸收,保证高可见光透过的同时,能有效控制太阳辐射。
优选地,本发明所述溶剂为去离子水。所述分散剂可以为聚合物性阴离子分散剂。
上述预分散后,本发明将预分散体置于研磨机或磨砂机中进行研磨分散,得到钨酸铯纳米隔热浆料。研磨分散时,控制研磨球的填充体积为 70-90% ,研磨时间为 5-10h 。
本发明还提供一种钨酸铯纳米隔热浆料,其中,采用如上任一所述的钨酸铯纳米隔热浆料的制备方法制备而成。所述钨酸铯纳米隔热浆料的平均粒径在 100nm 以下,固含量在 10-30wt% 。
本发明还提供一种钨酸铯纳米隔热水性涂料,其中,按重量百分比计,包括以下组分制成: 10-30% 的钨酸铯纳米隔热浆料、 30-65% 的水性树脂、 1-10% 的涂料助剂、 15-55% 的溶剂(如去离子水);所述钨酸铯纳米隔热浆料为如上任一所述的钨酸铯纳米隔热浆料。
优选地,所述水性树脂为水性聚氨酯树脂、水性丙烯酸树脂中的一种。
本发明所述涂料助剂包括分散剂、成膜助剂、流平剂、消泡剂和增稠剂中的至少一种。其中,所述分散剂可以为聚合物性阴离子分散剂,所述成膜助剂可以为乙二醇单丁醚、二丙二醇丁醚中的至少一种,所述流平剂可以为丙烯酸共聚物或非反应型聚醚改性聚硅氧烷,所述消泡剂可以为非硅酮含疏水粒子矿物混合物,所述增稠剂可以为改性聚氨酯增稠剂或者聚丙烯酸钠增稠剂。
本发明还提供一种如上任一所述的钨酸铯纳米隔热水性涂料的制备方法,其中,按照上述配方,将钨酸铯纳米隔热浆料加到水性树脂中,搅拌分散 10-30 分钟,再加入涂料助剂、溶剂,搅拌混合均匀,即制得钨酸铯纳米隔热水性涂料。
下面通过实施例对本发明进行详细说明。
实施例 1
按重量百分比计,钨酸铯纳米隔热水性涂料包括以下组分制成:
水性聚氨酯树脂 55% ;
钨酸铯纳米隔热浆料 10% ;
消泡剂 1% ;
润湿剂 1% ;
附着力促进剂 1% ;
增稠剂 1% ;
去离子水 31% ;
先制取钨酸铯纳米隔热浆料,然后按上述配方,将钨酸铯纳米隔热浆料在搅拌下缓慢加入到计量的水性聚氨酯树脂中,搅拌分散,然后加入计量的去离子水及上述助剂,继续搅拌 l0min 后,静置 30min 即可。
实施例 2
按重量百分比计,钨酸铯纳米隔热水性涂料包括以下组分制成:
水性聚氨酯树脂 60% ;
钨酸铯纳米隔热浆料 10% ;
消泡剂 1% ;
润湿剂 1% ;
附着力促进剂 1% ;
增稠剂 1% ;
去离子水 26% ;
先制取钨酸铯纳米隔热浆料,然后按上述配方,将钨酸铯纳米隔热浆料在搅拌下缓慢加入到计量的水性聚氨酯树脂,搅拌分散,然后加入计量的去离子水及上述助剂,继续搅拌 l0min 后,静置 30min 即可。
实施例 3
按重量百分比计,钨酸铯纳米隔热水性涂料包括以下组分制成:
水性丙烯酸树脂 55% ;
钨酸铯纳米隔热浆料 10% ;
消泡剂 1% ;
润湿剂 1% ;
附着力促进剂 1% ;
增稠剂 1% ;
去离子水 31% ;
先制取钨酸铯纳米隔热浆料,然后按上述配方,将钨酸铯纳米隔热浆料在搅拌下缓慢加入到计量的水性丙烯酸树脂中,搅拌分散,然后加入计量的去离子水及上述助剂,继续搅拌 l0min 后,静置 30min 即可。
实施例 4
按重量百分比计,钨酸铯纳米隔热水性涂料包括以下组分制成:
水性丙烯酸树脂 60% ;
钨酸铯纳米隔热浆料 10% ;
消泡剂 1% ;
润湿剂 1% ;
附着力促进剂 1% ;
增稠剂 1% ;
去离子水 26% ;
先制取钨酸铯纳米隔热浆料,然后按上述配方,将钨酸铯纳米隔热浆料在搅拌下缓慢加入到计量的水性丙烯酸树脂中,搅拌分散,然后加入计量的去离子水及上述助剂,继续搅拌 l0min 后,静置 30min 即可。
综上所述,本发明提供的一种 钨酸铯纳米隔热浆料、涂料及其制备方法 ,本发明方法制得的钨酸铯纳米隔热浆料极其稳定,且对太阳光有强烈吸收,保证高可见光透过的同时,能有效控制太阳辐射。另外,本发明制备方法简单、生产成本低廉,能大规模生产;且能够简单、高效的制备钨酸铯纳米隔热水性涂料,该涂料具有可见光透过率高、红外线及紫外线阻隔率高、硬度强、附着力强和耐候等优点。
应当理解的是,本发明的应用不限于上述的举例,对本领域普通技术人员来说,可以根据上述说明加以改进或变换,所有这些改进和变换都应属于本发明所附权利要求的保护范围。

Claims (10)

  1. 一种钨酸铯纳米隔热浆料的制备方法,其特征在于,按重量百分比计,包括步骤:将溶剂 67-80% 、钨酸铯纳米粉体 10-30% 和分散剂 2-10% ,在搅拌或超声波破碎的作用下进行预分散,接着进行研磨分散,得到钨酸铯纳米隔热浆料。
  2. 根据权利要求 1 所述的钨酸铯纳米隔热浆料的制备方法,其特征在于,所述溶剂为去离子水。
  3. 根据权利要求 1 所述的钨酸铯纳米隔热浆料的制备方法,其特征在于,所述分散剂为聚合物性阴离子分散剂。
  4. 根据权利要求 1 所述的钨酸铯纳米隔热浆料的制备方法,其特征在于,研磨分散时,控制研磨球的填充体积为 70-90% ,研磨时间为 5-10h 。
  5. 一种钨酸铯纳米隔热浆料,其特征在于,采用如权利要求 1~4 任一所述的钨酸铯纳米隔热浆料的制备方法制备而成。
  6. 根据权利要求 5 所述的钨酸铯纳米隔热浆料,其特征在于,所述钨酸铯纳米隔热浆料的粒径在 100nm 以下,固含量在 10-30wt% 。
  7. 一种钨酸铯纳米隔热水性涂料,其特征在于,按重量百分比计,包括以下组分制成: 10-30% 的钨酸铯纳米隔热浆料、 30-65% 的水性树脂、 1-10% 的涂料助剂、 15-55% 的溶剂;所述钨酸铯纳米隔热浆料为权利要求 5~6 任一所述的钨酸铯纳米隔热浆料。
  8. 根据权利要求 7 所述的钨酸铯纳米隔热水性涂料,其特征在于,所述水性树脂为水性聚氨酯树脂、水性丙烯酸树脂中的一种。
  9. 根据权利要求 7 所述的钨酸铯纳米隔热水性涂料,其特征在于,所述涂料助剂包括分散剂、成膜助剂、流平剂、消泡剂和增稠剂中的至少一种。
  10. 一种如权利要求 7~9 任一所述的钨酸铯纳米隔热水性涂料的制备方法,其特征在于,按照上述配方,将钨酸铯纳米隔热浆料加到水性树脂中,搅拌分散 10-30 分钟,再加入涂料助剂、溶剂,搅拌混合均匀,即制得钨酸铯纳米隔热水性涂料。
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