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WO2020253092A1 - Manufacturing method for aerogel superhydrophobic thermally-insulating ultrathin felt - Google Patents

Manufacturing method for aerogel superhydrophobic thermally-insulating ultrathin felt Download PDF

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Publication number
WO2020253092A1
WO2020253092A1 PCT/CN2019/119450 CN2019119450W WO2020253092A1 WO 2020253092 A1 WO2020253092 A1 WO 2020253092A1 CN 2019119450 W CN2019119450 W CN 2019119450W WO 2020253092 A1 WO2020253092 A1 WO 2020253092A1
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aerogel
parts
felt
super
fiber
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Chinese (zh)
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郑凯
张格丰
时磊
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Suzhou Zhuona Nanotechnology Co Ltd
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Suzhou Zhuona Nanotechnology Co Ltd
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds

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  • the invention relates to a preparation method of aerogel super-hydrophobic heat-insulating super-thin felt, which belongs to the technical field of new materials.
  • Aerogel felt can be mainly used for thermal insulation in petrochemical pipelines, urban heating network pipelines, steel furnaces and other fields.
  • the operating temperature is around 700 degrees.
  • the advantages are thin thickness, light weight, low thermal conductivity, safety and environmental protection, and convenient construction.
  • aerogels are sprayed on the surface of glass fiber mats, or sols and fibers are mixed to prepare aerogel insulation mats, but the aerogel mats require supercritical drying to achieve good results. The process is complicated and cumbersome, and the aerogel particles and dust are scattered after the drying, and the general specifications are above 3mm, which cannot be used in some specific application environments.
  • the present invention provides a method for preparing aerogel super-hydrophobic heat-insulating super-thin felt.
  • the first object of the present invention is to provide a method for preparing aerogel super-hydrophobic heat-insulating super-thin felt, which includes the following steps:
  • step (1) Disperse 0.1-5 parts of fiber disintegrant in the slurry obtained in step (1) based on parts by mass, add 1-15 parts of fibers to dissolve, and form after disintegration;
  • step (3) Dry the product formed in step (2) to obtain an aerogel super-hydrophobic thermal insulation mat.
  • the dispersant is one or more combinations of cellulose, polyvinyl alcohol, polyethylene glycol, polyvinylpyrrolidone, fatty acid dispersant, aliphatic amide dispersant, and ester dispersant .
  • the solvent is water.
  • the aerogel powder includes SiO 2 aerogel, TiO 2 aerogel, ZrO 2 aerogel, Al 2 O 3 aerogel, NiO aerogel, ZnO aerogel, carbon gas One or more mixtures of gel, carbon nanotube aerogel, and graphene aerogel.
  • step (1) the speed of high-speed dispersion is 500-2000 rpm, and the dispersion time is 10-20 min.
  • the fiber disintegrant is polymethyl cellulose, hydroxyethyl cellulose, EVA, polyacrylamide, polyvinylpyrrolidone, polyethylene oxide, stearic acid, sodium dodecylbenzene sulfonate, quaternary One or more of ammonium compound, lecithin, amino acid type, betaine type, alkyl glucoside, fatty acid glyceride, fatty acid sorbitan, and polysorbate are mixed.
  • the fiber is one or more of glass fiber, man-made fiber and natural fiber.
  • step (2) the molding is suction filtration molding or press filtration molding.
  • step (2) the drying temperature is 60-100° C., and the pressure is 0.1-1 atmosphere.
  • step (2) the disintegration is mechanical stirring under normal temperature and pressure, 100-1000 rpm, 0.5-1 h.
  • the second object of the present invention is to provide aerogel super-hydrophobic heat-insulating super-thin felt prepared by the method.
  • the aerogel super-hydrophobic heat-insulating ultra-thin felt of the present invention adopts a secondary molding aerogel felt processing technology, which is simpler;
  • the thickness of the aerogel super-hydrophobic heat-insulating ultra-thin felt of the present invention can be 1000 ⁇ m-5000 ⁇ m, which makes up for the shortcomings in the application of aerogel felt, and can be widely used in precision industries such as electronics, and new energy automobile battery packs.
  • the overall heat insulation can play a role in fire prevention, flame retardancy, heat insulation and heat preservation. If the lithium battery catches fire, it can also buy more time for escape and fire fighting.
  • the aerogel ultra-thin felt can be used for thermal insulation of batteries, and also for thermal insulation of electronic products such as notebook computers.
  • Figure 1 is a comparison diagram of the thermal insulation felt of the present invention and the commercially available thermal insulation felt, wherein the left picture is the thermal insulation felt of the present invention, and the right photo is the commercial thermal insulation felt.
  • the preparation of aerogel super-hydrophobic thermal insulation felt includes the following steps:
  • step (2) In parts by mass, disperse 2 parts of fiber disintegrant polymethyl cellulose in the slurry obtained in step (1), add 5 parts of glass fiber for disintegration, and stir at 300 rpm for 30 min under normal temperature and pressure. , It can be diluted with water during the unwinding process to ensure that the fibers are not agglomerated or damaged. After unwinding, it is measured according to the thickness and formed by suction filtration;
  • step (3) The product formed in step (2) is dried at 100° C. under normal pressure to obtain an aerogel super-hydrophobic thermal insulation mat.
  • step (2) Disperse 1 part of the fiber disintegrant polyvinylpyrrolidone in the slurry obtained in step (1) in parts by mass, add 10 parts of glass fiber for disintegration, and stir at 500 rpm for 1 h at normal temperature and pressure.
  • the process can be diluted with water to ensure that the fibers are not agglomerated or damaged. After unraveling, they are measured according to the thickness and formed by suction filtration;
  • step (3) The product formed in step (2) is dried at 80° C. under normal pressure to obtain an aerogel super-hydrophobic thermal insulation mat.
  • step (2) Disperse 3 parts of fiber disintegrant polymethyl cellulose in the slurry obtained in step (1) in parts by mass, add 8 parts of glass fiber for disintegration, and stir at 500 rpm for 30 min under normal temperature and pressure. , It can be diluted with water during the unwinding process to ensure that the fibers are not agglomerated or damaged. After unwinding, it is measured according to the thickness and formed by suction filtration;
  • step (3) The product formed in step (2) is dried under negative pressure at 60° C. and 0.1 atm to obtain an aerogel super-hydrophobic thermal insulation mat.
  • the heat insulation effect is to place the insulation felt to be tested on a hot stage with a temperature of 80°C, and then use an infrared imaging thermometer to detect the surface temperature of the insulation felt after 1 min.
  • the hydrophobic effect is measured by a contact angle tester. Drop the drop on the surface of the insulation felt to be tested, and calculate the contact angle of the drop with a contact angle tester.
  • the powder drop rate is tested in accordance with GB/T 20810-2018.
  • Figure 1 is a comparison diagram of the aerogel super-hydrophobic thermal insulation ultra-thin felt of Example 2 of the present invention and the commercially available thermal insulation felt. It can be seen from the figure that the thickness of the thermal insulation felt of the present invention is significantly reduced, and it is tighter and tighter. , Not easy to drop powder.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Thermal Insulation (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

A manufacturing method for an aerogel superhydrophobic thermally-insulating ultrathin felt. First, an aerogel powder is dispersed in a solvent, then a fiber is dissolved therein, and then, by means of a secondary molding process of preforming followed by drying, the aerogel superhydrophobic thermally-insulating ultrathin felt is manufactured. For the aerogel superhydrophobic thermally-insulating ultrathin felt, the secondary molding process for aerogel felt processing is employed for increased simplicity; moreover, the aerogel felt manufactured is not prone to dropping powder and prevents dust pollution and performance loss; the thickness can be 500 μm to 5000 μm, thus making up for shortcomings of the aerogel felt in application.

Description

一种气凝胶超疏水隔热超薄毡的制备方法Preparation method of aerogel super-hydrophobic heat-insulating super-thin felt 技术领域Technical field

本发明涉及一种气凝胶超疏水隔热超薄毡的制备方法，属于新材料技术领域。The invention relates to a preparation method of aerogel super-hydrophobic heat-insulating super-thin felt, which belongs to the technical field of new materials.

背景技术Background technique

气凝胶毡主要可以应用在石油化工管道、城市热网管道、钢铁窑炉等领域的绝热保温。使用温度在700度左右。优势就是厚度薄、质量轻、导热系数低、安全环保、施工便捷。现有技术中有采用将气凝胶喷洒在玻纤毡表面，或采用溶胶与纤维混合的方式制备气凝胶隔热毡，但是气凝胶毡需要超临界干燥才能达到很好的效果，此工艺复杂繁琐，并且干燥完成后气凝胶颗粒和粉尘散落，且一般规格都在3mm以上，在某些特定应用环境下没办法使用。Aerogel felt can be mainly used for thermal insulation in petrochemical pipelines, urban heating network pipelines, steel furnaces and other fields. The operating temperature is around 700 degrees. The advantages are thin thickness, light weight, low thermal conductivity, safety and environmental protection, and convenient construction. In the prior art, aerogels are sprayed on the surface of glass fiber mats, or sols and fibers are mixed to prepare aerogel insulation mats, but the aerogel mats require supercritical drying to achieve good results. The process is complicated and cumbersome, and the aerogel particles and dust are scattered after the drying, and the general specifications are above 3mm, which cannot be used in some specific application environments.

发明内容Summary of the invention

为解决上述技术问题，本发明提供一种气凝胶超疏水隔热超薄毡的制备方法。To solve the above technical problems, the present invention provides a method for preparing aerogel super-hydrophobic heat-insulating super-thin felt.

本发明的第一个目的是提供一种气凝胶超疏水隔热超薄毡的制备方法，包括如下步骤：The first object of the present invention is to provide a method for preparing aerogel super-hydrophobic heat-insulating super-thin felt, which includes the following steps:

(1)按质量份计，将0.1～5份分散剂分散在90～120份溶剂中，加入1～15份气凝胶粉体，高速分散，将粉体均匀分散在溶剂中；(1) Based on parts by mass, disperse 0.1-5 parts of dispersant in 90-120 parts of solvent, add 1-15 parts of aerogel powder, disperse at high speed, and evenly disperse the powder in the solvent;

(2)按质量份计，将0.1～5份纤维疏解剂分散在步骤(1)得到的浆料中，加入1-15份纤维进行疏解，疏解后进行成型；(2) Disperse 0.1-5 parts of fiber disintegrant in the slurry obtained in step (1) based on parts by mass, add 1-15 parts of fibers to dissolve, and form after disintegration;

(3)将步骤(2)成型后的产品进行干燥，得到气凝胶超疏水隔热薄毡。(3) Dry the product formed in step (2) to obtain an aerogel super-hydrophobic thermal insulation mat.

进一步地，所述的分散剂为纤维素、聚乙烯醇、聚乙二醇、聚乙烯吡咯烷酮、脂肪酸类分散剂、脂肪族酰胺类分散剂、酯类分散剂中的一种或一种以上 组合。Further, the dispersant is one or more combinations of cellulose, polyvinyl alcohol, polyethylene glycol, polyvinylpyrrolidone, fatty acid dispersant, aliphatic amide dispersant, and ester dispersant .

进一步地，所述的溶剂为水。Further, the solvent is water.

进一步地，所述的气凝胶粉体包括SiO 2气凝胶、TiO 2气凝胶、ZrO 2气凝胶、Al 2O 3气凝胶、NiO气凝胶、ZnO气凝胶、碳气凝胶、碳纳米管气凝胶、石墨烯气凝胶中的一种或者多种混合。 Further, the aerogel powder includes SiO 2 aerogel, TiO 2 aerogel, ZrO 2 aerogel, Al 2 O 3 aerogel, NiO aerogel, ZnO aerogel, carbon gas One or more mixtures of gel, carbon nanotube aerogel, and graphene aerogel.

进一步地，在步骤(1)中，高速分散的转速为500-2000rpm，分散时间为10～20min。Further, in step (1), the speed of high-speed dispersion is 500-2000 rpm, and the dispersion time is 10-20 min.

进一步地，所述的纤维疏解剂为聚甲基纤维素、羟乙基纤维素、EVA、聚丙烯酰胺、聚乙烯吡咯烷酮、聚氧化乙烯、硬脂酸、十二烷基苯磺酸钠、季铵化物、卵磷脂、氨基酸型、甜菜碱型、烷基葡糖苷、脂肪酸甘油酯、脂肪酸山梨坦、聚山梨酯中的一种或者多种混合。Further, the fiber disintegrant is polymethyl cellulose, hydroxyethyl cellulose, EVA, polyacrylamide, polyvinylpyrrolidone, polyethylene oxide, stearic acid, sodium dodecylbenzene sulfonate, quaternary One or more of ammonium compound, lecithin, amino acid type, betaine type, alkyl glucoside, fatty acid glyceride, fatty acid sorbitan, and polysorbate are mixed.

进一步地，所述的纤维为玻璃纤维、人造纤维、天然纤维中的一种或多种。Further, the fiber is one or more of glass fiber, man-made fiber and natural fiber.

进一步地，在步骤(2)中，所述的成型是采用抽滤成型或压滤成型。Further, in step (2), the molding is suction filtration molding or press filtration molding.

进一步地，在步骤(2)中，所述的干燥的温度为60～100℃，压力为0.1-1个大气压。Further, in step (2), the drying temperature is 60-100° C., and the pressure is 0.1-1 atmosphere.

进一步地，在步骤(2)中，所述的疏解是常温常压下通过机械搅拌，100-1000rpm，疏解0.5-1h。Further, in step (2), the disintegration is mechanical stirring under normal temperature and pressure, 100-1000 rpm, 0.5-1 h.

本发明的第二个目的是提供所述方法制备得到的气凝胶超疏水隔热超薄毡。The second object of the present invention is to provide aerogel super-hydrophobic heat-insulating super-thin felt prepared by the method.

本发明的有益效果是：The beneficial effects of the present invention are:

(1)本发明的气凝胶超疏水隔热超薄毡，采用二次成型的气凝胶毡加工工艺，更加简单；(1) The aerogel super-hydrophobic heat-insulating ultra-thin felt of the present invention adopts a secondary molding aerogel felt processing technology, which is simpler;

(2)本发明方法制成的气凝胶超疏水隔热超薄毡不容掉粉，避免了粉尘污染以及性能损失；(2) The aerogel super-hydrophobic heat-insulating super-thin felt made by the method of the present invention can not tolerate powder, avoiding dust pollution and performance loss;

(3)本发明的气凝胶超疏水隔热超薄毡厚度可以做到1000μm-5000μm，弥补了气凝胶毡应用上的不足，可以广泛应用于电子等精密行业，以及新能源汽车电池包的整体隔热，可起到防火、阻燃、隔热、保温等作用。万一锂电池 发生起火，还可为逃生和救火争取更多的时间。另一方面，气凝胶超薄毡可以应用在电芯间隔热，还可用于笔记本电脑等电子产品的绝热。(3) The thickness of the aerogel super-hydrophobic heat-insulating ultra-thin felt of the present invention can be 1000 μm-5000 μm, which makes up for the shortcomings in the application of aerogel felt, and can be widely used in precision industries such as electronics, and new energy automobile battery packs. The overall heat insulation can play a role in fire prevention, flame retardancy, heat insulation and heat preservation. If the lithium battery catches fire, it can also buy more time for escape and fire fighting. On the other hand, the aerogel ultra-thin felt can be used for thermal insulation of batteries, and also for thermal insulation of electronic products such as notebook computers.

附图说明Description of the drawings

图1为本发明隔热毡与市售隔热毡的对比图，其中，左图为本发明隔热毡，右图为市售隔热毡。Figure 1 is a comparison diagram of the thermal insulation felt of the present invention and the commercially available thermal insulation felt, wherein the left picture is the thermal insulation felt of the present invention, and the right photo is the commercial thermal insulation felt.

具体实施方式Detailed ways

下面结合附图和具体实施例对本发明作进一步说明，以使本领域的技术人员可以更好地理解本发明并能予以实施，但所举实施例不作为对本发明的限定。The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention, but the cited embodiments are not intended to limit the present invention.

实施例1：气凝胶超疏水隔热超薄毡的制备Example 1: Preparation of aerogel super-hydrophobic heat-insulating super-thin felt

气凝胶超疏水隔热薄毡的制备包括如下步骤：The preparation of aerogel super-hydrophobic thermal insulation felt includes the following steps:

(1)按质量份计，将2份聚乙烯醇分散剂分散在100份水中，加入5份SiO 2气凝胶粉体，在1000rpm转速下高速分散15min，将粉体均匀分散在水中； (1) In parts by mass, disperse 2 parts of polyvinyl alcohol dispersant in 100 parts of water, add 5 parts of SiO 2 aerogel powder, and disperse at high speed at 1000 rpm for 15 minutes, and evenly disperse the powder in water;

(2)按质量份计，将2份纤维疏解剂聚甲基纤维素分散在步骤(1)得到的浆料中，加入5份玻璃纤维进行疏解，在常温常压下，采用300rpm进行搅拌30min，疏解过程可加水稀释，保证纤维不结团，不损伤，疏解后根据厚度计量，采用抽滤进行成型；(2) In parts by mass, disperse 2 parts of fiber disintegrant polymethyl cellulose in the slurry obtained in step (1), add 5 parts of glass fiber for disintegration, and stir at 300 rpm for 30 min under normal temperature and pressure. , It can be diluted with water during the unwinding process to ensure that the fibers are not agglomerated or damaged. After unwinding, it is measured according to the thickness and formed by suction filtration;

(3)将步骤(2)成型后的产品在100℃常压下进行干燥，得到气凝胶超疏水隔热薄毡。(3) The product formed in step (2) is dried at 100° C. under normal pressure to obtain an aerogel super-hydrophobic thermal insulation mat.

实施例2：气凝胶超疏水隔热超薄毡的制备Example 2: Preparation of aerogel super-hydrophobic heat-insulating super-thin felt

(1)按质量份计，将1份聚乙烯醇分散在90份水中，加入10份SiO 2气凝胶粉体，在1500rpm转速下高速分散10min，将粉体均匀分散在水中； (1) Based on parts by mass, disperse 1 part of polyvinyl alcohol in 90 parts of water, add 10 parts of SiO 2 aerogel powder, and disperse at high speed at 1500 rpm for 10 minutes, and evenly disperse the powder in water;

(2)按质量份计，将1份纤维疏解剂聚乙烯吡咯烷酮分散在步骤(1)得到的浆料中，加入10份玻璃纤维进行疏解，在常温常压下，采用500rpm进行搅拌1h，疏解过程可加水稀释，保证纤维不结团，不损伤，疏解后根据厚度计量，采用抽滤进行成型；(2) Disperse 1 part of the fiber disintegrant polyvinylpyrrolidone in the slurry obtained in step (1) in parts by mass, add 10 parts of glass fiber for disintegration, and stir at 500 rpm for 1 h at normal temperature and pressure. The process can be diluted with water to ensure that the fibers are not agglomerated or damaged. After unraveling, they are measured according to the thickness and formed by suction filtration;

(3)将步骤(2)成型后的产品在80℃常压下进行干燥，得到气凝胶超疏水隔热薄毡。(3) The product formed in step (2) is dried at 80° C. under normal pressure to obtain an aerogel super-hydrophobic thermal insulation mat.

实施例3：气凝胶超疏水隔热超薄毡的制备Example 3: Preparation of aerogel super-hydrophobic heat-insulating super-thin felt

(1)按质量份计，将3份聚乙烯醇分散在120份水中，加入8份SiO 2气凝胶粉体，在1500rpm转速下高速分散15min，将粉体均匀分散在水中； (1) In parts by mass, disperse 3 parts of polyvinyl alcohol in 120 parts of water, add 8 parts of SiO 2 aerogel powder, and disperse at high speed at 1500 rpm for 15 minutes, and evenly disperse the powder in water;

(2)按质量份计，将3份纤维疏解剂聚甲基纤维素分散在步骤(1)得到的浆料中，加入8份玻璃纤维进行疏解，在常温常压下，采用500rpm进行搅拌30min，疏解过程可加水稀释，保证纤维不结团，不损伤，疏解后根据厚度计量，采用抽滤进行成型；(2) Disperse 3 parts of fiber disintegrant polymethyl cellulose in the slurry obtained in step (1) in parts by mass, add 8 parts of glass fiber for disintegration, and stir at 500 rpm for 30 min under normal temperature and pressure. , It can be diluted with water during the unwinding process to ensure that the fibers are not agglomerated or damaged. After unwinding, it is measured according to the thickness and formed by suction filtration;

(3)将步骤(2)成型后的产品在60℃、0.1个大气压下进行负压干燥，得到气凝胶超疏水隔热薄毡。(3) The product formed in step (2) is dried under negative pressure at 60° C. and 0.1 atm to obtain an aerogel super-hydrophobic thermal insulation mat.

实施例4：Example 4:

对实施例1～3制备得到的气凝胶超疏水隔热超薄毡及市售的气凝胶隔热毡进行性能测试。结果如表1所示。The aerogel super-hydrophobic heat-insulating ultra-thin felt prepared in Examples 1 to 3 and the commercially available aerogel heat-insulating felt were tested for performance. The results are shown in Table 1.

隔热效果采用将待测隔热毡置于温度为80℃的热台上，放置1min后采用红外成像测温仪分别检测隔热毡表面的温度。The heat insulation effect is to place the insulation felt to be tested on a hot stage with a temperature of 80°C, and then use an infrared imaging thermometer to detect the surface temperature of the insulation felt after 1 min.

疏水效果采用接触角测试仪测试接触角。将液滴滴于待测隔热毡表面，通过接触角测试仪将液滴的接触角计算出来。The hydrophobic effect is measured by a contact angle tester. Drop the drop on the surface of the insulation felt to be tested, and calculate the contact angle of the drop with a contact angle tester.

掉粉率按照GB/T 20810-2018进行检测。The powder drop rate is tested in accordance with GB/T 20810-2018.

表1 气凝胶隔热毡性能参数Table 1 Performance parameters of aerogel insulation felt

 To 厚度(mm)Thickness(mm) 隔热温度差(℃)Thermal insulation temperature difference (℃) 接触角Contact angle 掉粉率Powder drop rate 实施例1Example 1 0.50.5 3838 ≥160≥160 ≤5‰≤5‰ 实施例2Example 2 22 5050 ≥160≥160 ≤5‰≤5‰ 实施例3Example 3 55 6767 ≥160≥160 ≤5‰≤5‰ 市售隔热毡Commercial insulation felt 1010 6565 ≥160≥160 ≥10％≥10%

图1为本发明实施例2的气凝胶超疏水隔热超薄毡与市售隔热毡的对比图，由图可知，本发明的隔热毡的厚度显著减小，并且更加密切紧实，不易掉粉。Figure 1 is a comparison diagram of the aerogel super-hydrophobic thermal insulation ultra-thin felt of Example 2 of the present invention and the commercially available thermal insulation felt. It can be seen from the figure that the thickness of the thermal insulation felt of the present invention is significantly reduced, and it is tighter and tighter. , Not easy to drop powder.

以上所述实施例仅是为充分说明本发明而所举的较佳的实施例，本发明的保护范围不限于此。本技术领域的技术人员在本发明基础上所作的等同替代或变换，均在本发明的保护范围之内。本发明的保护范围以权利要求书为准。The above-mentioned embodiments are only preferred embodiments for fully explaining the present invention, and the protection scope of the present invention is not limited thereto. The equivalent substitutions or changes made by those skilled in the art on the basis of the present invention are all within the protection scope of the present invention. The protection scope of the present invention is subject to the claims.

Claims (10)

一种气凝胶超疏水隔热超薄毡的制备方法，其特征在于，包括如下步骤：A preparation method of aerogel super-hydrophobic heat-insulating ultra-thin felt, which is characterized in that it comprises the following steps: (1)按质量份计，将0.1～5份分散剂分散在90～120份溶剂中，加入1～15份气凝胶粉体，高速分散，将粉体均匀分散在溶剂中；(1) Based on parts by mass, disperse 0.1-5 parts of dispersant in 90-120 parts of solvent, add 1-15 parts of aerogel powder, disperse at high speed, and evenly disperse the powder in the solvent; (2)按质量份计，将0.1～5份纤维疏解剂分散在步骤(1)得到的浆料中，加入1-15份纤维进行疏解，疏解后进行成型；(2) Disperse 0.1-5 parts of fiber disintegrant in the slurry obtained in step (1) based on parts by mass, add 1-15 parts of fibers to dissolve, and form after disintegration; (3)将步骤(2)成型后的产品进行干燥，得到气凝胶超疏水隔热薄毡。(3) Dry the product formed in step (2) to obtain an aerogel super-hydrophobic thermal insulation mat. 根据权利要求1所述的方法，其特征在于，所述的分散剂为纤维素、聚乙烯醇、聚乙二醇、聚乙烯吡咯烷酮、脂肪酸类分散剂、脂肪族酰胺类分散剂、酯类分散剂中的一种或一种以上组合。The method according to claim 1, wherein the dispersant is cellulose, polyvinyl alcohol, polyethylene glycol, polyvinylpyrrolidone, fatty acid dispersant, aliphatic amide dispersant, ester dispersant One or more than one combination in the agent. 根据权利要求1所述的方法，其特征在于，所述的溶剂为水。The method of claim 1, wherein the solvent is water. 根据权利要求1所述的方法，其特征在于，所述的气凝胶粉体包括SiO 2气凝胶、TiO 2气凝胶、ZrO 2气凝胶、Al 2O 3气凝胶、NiO气凝胶、ZnO气凝胶、碳气凝胶、碳纳米管气凝胶、石墨烯气凝胶中的一种或者多种混合。 The method according to claim 1, wherein the aerogel powder comprises SiO 2 aerogel, TiO 2 aerogel, ZrO 2 aerogel, Al 2 O 3 aerogel, NiO gas One or a combination of gel, ZnO aerogel, carbon aerogel, carbon nanotube aerogel, and graphene aerogel. 根据权利要求1所述的方法，其特征在于，在步骤(1)中，高速分散的转速为500-2000rpm，分散时间为10～20min。The method according to claim 1, characterized in that, in step (1), the speed of high-speed dispersion is 500-2000 rpm, and the dispersion time is 10-20 min. 根据权利要求1所述的方法，其特征在于，所述的纤维疏解剂为聚甲基纤维素、羟乙基纤维素、EVA、聚丙烯酰胺、聚乙烯吡咯烷酮、聚氧化乙烯、硬脂酸、十二烷基苯磺酸钠、季铵化物、卵磷脂、氨基酸型、甜菜碱型、烷基葡糖苷、脂肪酸甘油酯、脂肪酸山梨坦、聚山梨酯中的一种或者多种混合。The method according to claim 1, wherein the fiber disintegrant is polymethyl cellulose, hydroxyethyl cellulose, EVA, polyacrylamide, polyvinylpyrrolidone, polyethylene oxide, stearic acid, One or more of sodium dodecylbenzene sulfonate, quaternary ammonium compound, lecithin, amino acid type, betaine type, alkyl glucoside, fatty acid glyceride, fatty acid sorbitan, and polysorbate are mixed. 根据权利要求1所述的方法，其特征在于，所述的纤维为玻璃纤维、人造纤维、天然纤维中的一种或多种。The method according to claim 1, wherein the fiber is one or more of glass fiber, man-made fiber, and natural fiber. 根据权利要求1所述的方法，其特征在于，在步骤(2)中，所述的成型是采用抽滤成型或压滤成型。The method according to claim 1, characterized in that, in step (2), the molding is suction filtration molding or press filtration molding. 根据权利要求1所述的方法，其特征在于，在步骤(2)中，所述的干燥的温度为60～100℃，压力为0.1-1个大气压。The method according to claim 1, characterized in that, in step (2), the drying temperature is 60-100°C, and the pressure is 0.1-1 atmosphere. 权利要求1～9任一项所述的方法制备得到的气凝胶超疏水隔热超薄毡。The aerogel super-hydrophobic heat-insulating super-thin felt prepared by the method of any one of claims 1-9.
PCT/CN2019/119450 2019-06-21 2019-11-19 Manufacturing method for aerogel superhydrophobic thermally-insulating ultrathin felt Ceased WO2020253092A1 (en)

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