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CN112759268A - Heat-insulating sound-absorbing gradient porous foam glass - Google Patents

Heat-insulating sound-absorbing gradient porous foam glass Download PDF

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Publication number
CN112759268A
CN112759268A CN201911132658.7A CN201911132658A CN112759268A CN 112759268 A CN112759268 A CN 112759268A CN 201911132658 A CN201911132658 A CN 201911132658A CN 112759268 A CN112759268 A CN 112759268A
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calcium carbonate
foam glass
powder
glass
porous foam
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陈照峰
张端银
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Nanjing University of Aeronautics and Astronautics
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Nanjing University of Aeronautics and Astronautics
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C11/00—Multi-cellular glass ; Porous or hollow glass or glass particles
    • C03C11/007—Foam glass, e.g. obtained by incorporating a blowing agent and heating
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/06—Other methods of shaping glass by sintering, e.g. by cold isostatic pressing of powders and subsequent sintering, by hot pressing of powders, by sintering slurries or dispersions not undergoing a liquid phase reaction
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/08—Other methods of shaping glass by foaming
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Dispersion Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Glass Compositions (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

本发明公开了一种隔热吸音梯度多孔泡沫玻璃，由三层原料成分占比相同但碳酸钙粉末粒径不同的混合料组成，其中第一层具有40～60％体积分数的开孔且孔径1mm‑2.5mm，第二层具有50～70％体积分数的半开孔且孔径0.2mm‑1mm，第三层具有60～80％体积分数的闭孔且孔径1μm‑200μm；通过模压成型工艺将玻璃粉、碳酸钙粉、纳米氧化锌粉、脱模剂酚醛树脂粘结剂组成的混合料压制成板，然后将压实板加热烧结、发泡、冷却制备出梯度多孔泡沫玻璃。本发明所提供的梯度多孔泡沫玻璃具有轻质环保、隔热保温、吸音等优异性能，广泛应用建筑、汽车、航空航天等领域。The invention discloses a thermal insulation and sound absorption gradient porous foam glass, which is composed of three layers of mixtures with the same proportion of raw materials but different particle sizes of calcium carbonate powders, wherein the first layer has 40-60% volume fraction of open pores and a pore size 1mm-2.5mm, the second layer has semi-open pores with a volume fraction of 50-70% and a diameter of 0.2mm-1mm, and the third layer has closed pores with a volume fraction of 60-80% and a diameter of 1μm-200μm; The mixture composed of glass powder, calcium carbonate powder, nano-zinc oxide powder and mold release agent phenolic resin binder is pressed into a plate, and then the compacted plate is heated, sintered, foamed and cooled to prepare gradient porous foam glass. The gradient porous foam glass provided by the invention has excellent properties such as light weight, environmental protection, heat insulation, sound absorption and the like, and is widely used in the fields of construction, automobile, aerospace and the like.

Description

Heat-insulating sound-absorbing gradient porous foam glass
Technical Field
The invention belongs to the field of heat-insulating sound-absorbing porous materials, and particularly relates to heat-insulating sound-absorbing gradient porous foam glass.
Background
With the continuous development of economic society, the normal production and life of people are seriously affected by environmental noise pollution, and a material which is energy-saving, environment-friendly and capable of absorbing noise is urgently needed. Foam glass is an artificially made inorganic non-metallic porous material, and consists of numerous connected or closed air holes. The material is a porous material with heat insulation, sound absorption, environmental protection and light weight, and is widely applied to the fields of buildings, automobiles, transportation, aerospace and the like.
The foam glass is prepared by crushing cullet, a foaming agent, a foaming promoter and the like, uniformly mixing the crushed cullet, the foaming agent, the foaming promoter and the like according to a proportion, and then sintering at a high temperature, foaming and annealing. The holes can be divided into open holes and closed holes according to different hole types; wherein the closed-cell bubbles in the heat-insulating foam glass account for more than 75 percent, and the open-cell bubbles in the sound-absorbing foam glass account for more than 50 percent. The closed-cell bubbles realize heat insulation and preservation performance through heat loss in ways of heat convection, heat radiation, solid heat conduction, gas heat conduction and the like; the open-cell bubbles achieve sound absorption performance by increasing the propagation path of sound waves inside the material, so that sound energy is converted into heat loss.
Patent CN107500551A discloses a heat insulation foam glass and a preparation method thereof, wherein a calcium hydroxide saturated solution and nano activated carbon are stirred and mixed to obtain a primary mixed solution, carbon dioxide is introduced into the primary mixed solution to obtain a secondary mixed solution, the secondary mixed solution is filtered and dried to obtain coated nano activated carbon, waste glass and plant ash are mixed and ball-milled to obtain mixed powder, the obtained mixed powder, the coated nano activated carbon and a fluxing agent are stirred and mixed, the mixture is subjected to compression molding, a release agent is sprayed, and preheating, sintering, foaming, annealing, dipping and drying are carried out to obtain the heat insulation foam glass. According to the invention, the foaming rate of the glass can be greatly improved by using the calcium carbonate-coated nano activated carbon as a foaming agent, and the heat-insulating foam glass with an open-cell structure is prepared, but the heat-insulating property of the foam glass with the open-cell structure is inferior to that of closed-cell foam glass.
Patent CN108405862A discloses a gradient porous foam steel material and a preparation method thereof. The gradient foam steel material is composed of a plurality of layers of foam steel with different porosities or different pore diameters. Weighing stainless steel powder and a pore-forming agent according to different proportions according to the number of layers of the gradient porous foam steel, uniformly mixing, sequentially pressurizing each layer of mixed raw materials by adopting a step-by-step increasing pressurizing mode, finally integrally forming, drying the formed blank, integrally sintering the dried blank, cooling along with a furnace after sintering is finished, taking out, fully washing with water, and finally obtaining the prepared gradient porous foam steel sample. The invention can prepare the gradient porous foam steel with controllable pore diameter and porosity, but the control of the open pores and the closed pores of the foam glass is not realized by changing the particle size of the foaming agent.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide gradient porous foam glass which can obviously improve the heat insulation and sound absorption performance.
The technical scheme provided for realizing the purpose is as follows:
the heat-insulating sound-absorbing gradient porous foam glass consists of three layers of mixed materials with the same raw material components in percentage and different calcium carbonate powder particle sizes, and is characterized in that the first layer has 40-60% of volume fraction open pores with the pore diameter of 1-2.5 mm, the second layer has 50-70% of volume fraction semi-open pores with the pore diameter of 0.2-1 mm, the third layer has 60-80% of volume fraction closed pores with the pore diameter of 1-200 mu m, the average sound-absorbing coefficient is 0.25-0.55, the heat conductivity coefficient is 0.03-0.06W/m.K, the compressive strength is 0.8-1.4MPa, and the volume weight is 100 plus 160kg/m3The water absorption is less than 0.4 percent.
The preparation method of the heat-insulating sound-absorbing gradient porous foam glass comprises the following steps in sequence:
(1) crushing the glass material by a ball mill to prepare glass powder, wherein the particle size of the glass powder is distributed between 0.1 and 10 mu m;
(2) preparing three calcium carbonate powders, wherein the first average particle size is 3.5-5 μm, the second average particle size is 2-3.5 μm, and the third average particle size is 0.5-2 μm;
(3) respectively mixing three calcium carbonate powders with the mass fraction of 0.1-5% with glass powder to form three initial mixtures, wherein the mixing amount of the calcium carbonate is 0.1-5%;
(4) respectively adding 0.1-0.5% of nano zinc oxide powder, 0.05-0.1% of release agent and 0.1-1% of phenolic resin binder into the three initial mixtures by weight ratio, and uniformly mixing to obtain 3 groups of mixtures;
(5) respectively carrying out compression molding on the 3 groups of mixed materials to obtain 3 groups of compression plates;
(6) laminating 3 groups of compaction plates to 50MPa-300MPa, wherein the compaction plate containing calcium carbonate powder with the average particle size of 2-3.5 μm is arranged in the middle;
(7) heating the laminated compacting plate to 200-650 ℃, carrying out heat preservation sintering, then continuously heating to 800-1000 ℃ for foaming, then rapidly cooling to 500-600 ℃, carrying out heat preservation for 5-10min, then slowly cooling to room temperature, and taking out to obtain the gradient porous foam glass. Compared with the prior art, the invention has the following advantages:
the gradient porous foam glass prepared by the invention can effectively improve the average sound absorption coefficient of the foam glass and reduce the heat conductivity coefficient, has the advantages of simple preparation process, convenience in operation, light weight, environmental friendliness and the like, and is widely applied to the fields of building outer walls, transportation, automobiles, aerospace and the like.
Detailed Description
The present invention is further illustrated by the following examples, which are intended to be purely exemplary and are not intended to limit the scope of the invention, as various equivalent modifications of the invention will occur to those skilled in the art upon reading the present specification and which fall within the limits of the appended claims.
Examples
The heat-insulating sound-absorbing gradient porous foam glass is composed of three layers of mixed materials which are identical in raw material component ratio and different in calcium carbonate powder particle size, wherein the first layer is provided with 40-60% of open pores in volume fraction and the pore diameter is 1mm-2.5mm, the second layer is provided with 50-70% of half open pores in volume fraction and the pore diameter is 0.2mm-1mm, and the third layer is provided with 60-80% of closed pores in volume fraction and the pore diameter is 1 mu m-200 mu m.
The preparation method of the heat-insulating sound-absorbing gradient porous foam glass comprises the following steps in sequence:
(1) crushing the glass material by a ball mill to prepare glass powder, wherein the particle size of the glass powder is distributed between 0.1 and 10 mu m;
(2) preparing three calcium carbonate powders, wherein the first average particle size is 3.5-5 μm, the second average particle size is 2-3.5 μm, and the third average particle size is 0.5-2 μm;
(3) mixing three kinds of calcium carbonate powder with glass powder to form three kinds of initial mixture, wherein the calcium carbonate content is 0.1-5%;
(4) respectively adding 0.1-0.5% of nano zinc oxide powder, 0.05-0.1% of release agent and 0.1-1% of phenolic resin binder into the three initial mixtures by weight ratio, and uniformly mixing to obtain 3 groups of mixtures;
(5) respectively carrying out compression molding on the 3 groups of mixed materials to obtain 3 groups of compression plates;
(6) laminating 3 groups of compaction plates to 50MPa-300MPa, wherein the compaction plate containing calcium carbonate powder with the average particle size of 2-3.5 μm is arranged in the middle;
(7) heating the laminated compacting plate to 200-650 ℃, carrying out heat preservation sintering, then continuously heating to 800-1000 ℃ for foaming, then rapidly cooling to 500-600 ℃, carrying out heat preservation for 5-10min, then slowly cooling to room temperature, and taking out to obtain the gradient porous foam glass.
Comparative example
The heat-insulating sound-absorbing gradient porous foam glass consists of a layer of mixture which comprises the same raw material components in proportion as in the embodiment, has 50-70% of half-open pores in volume fraction and has the pore diameter of 0.2-1 mm.
The preparation method of the heat-insulating sound-absorbing gradient porous foam glass comprises the following steps in sequence:
(1) crushing the glass material by a ball mill to prepare glass powder, wherein the particle size of the glass powder is distributed between 0.1 and 10 mu m;
(2) preparing calcium carbonate powder of the second particle size in the example;
(3) mixing calcium carbonate powder with a second particle size with glass powder to form an initial mixture, wherein the mixing amount of the calcium carbonate is 0.1-5%;
(4) respectively adding 0.1-0.5% of nano zinc oxide powder, 0.05-0.1% of release agent and 0.1-1% of phenolic resin binder into the initial mixture by weight ratio, and uniformly mixing to obtain a mixture;
(5) compression molding the mixture to obtain a compression plate;
(6) pressing the laminated layers of the compaction plates to 50MPa-300 MPa;
(7) heating the compacted plate to 200-650 ℃, carrying out heat preservation sintering, then continuing to heat to 800-1000 ℃ for foaming, then rapidly cooling to 500-600 ℃, carrying out heat preservation for 5-10min, then slowly cooling to room temperature, and taking out to obtain the uniform porous foam glass.
In the embodiment, the gradient control of the porous foam glass is realized by controlling the particle size of the foaming agent, and the gradient porous foam glass is prepared. Compared with the comparative example, the performances of the gradient porous foam glass prepared by the invention are improved to a certain degreeHigh, wherein the thermal conductivity is as low as 0.03-0.06W/m.K, the average sound absorption coefficient is 0.20-0.55, the compressive strength is 0.8-1.4MPa, and the volume weight is 100-3The water absorption is less than 0.4 percent.
The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the protection scope of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the protection scope of the technical solution of the present invention.

Claims (2)

1.一种隔热吸音梯度多孔泡沫玻璃，由三层原料成分占比相同但碳酸钙粉末粒径不同的混合料组成，其特征在于第一层具有40～60％体积分数的开孔且孔径1mm-2.5mm，第二层具有50～70％体积分数的半开孔且孔径0.2mm-1mm，第三层具有60～80％体积分数的闭孔且孔径1μm-200μm，平均吸音系数0.20-0.55，导热系数0.03-0.06W/m·K，抗压强度0.8-1.4MPa，容重100-160kg/m3，吸水率＜0.4％。1. A heat-insulating and sound-absorbing gradient porous foam glass, consisting of three layers of mixtures with the same proportion of raw materials but different particle sizes of calcium carbonate powder, is characterized in that the first layer has 40 to 60% volume fraction of openings and a pore size. 1mm-2.5mm, the second layer has semi-open pores with a volume fraction of 50-70% and a diameter of 0.2mm-1mm, the third layer has closed pores with a volume fraction of 60-80% and a diameter of 1μm-200μm, and the average sound absorption coefficient is 0.20- 0.55, thermal conductivity 0.03-0.06W/m·K, compressive strength 0.8-1.4MPa, bulk density 100-160kg/m 3 , water absorption <0.4%. 2.一种隔热吸音梯度多孔泡沫玻璃的制备方法，其特征在于包括以下顺序的步骤：2. a preparation method of thermal insulation and sound absorption gradient porous foam glass is characterized in that comprising the steps of the following order: (1)将玻璃料球磨机粉碎，制备玻璃粉，玻璃粉的粒径分布在0.1μm～10μm；(1) Pulverize the glass frit ball mill to prepare glass powder, and the particle size of the glass powder is distributed in the range of 0.1 μm to 10 μm; (2)准备三种碳酸钙粉，第一种平均粒径3.5-5μm，第二种平均粒径2-3.5μm，第三种平均粒径0.5-2μm；(2) Prepare three kinds of calcium carbonate powders, the first with an average particle size of 3.5-5 μm, the second with an average particle size of 2-3.5 μm, and the third with an average particle size of 0.5-2 μm; (3)将三种碳酸钙粉分别与玻璃粉混合形成三种初始混合料，其中碳酸钙掺量为0.1％-5％；(3) Mixing three kinds of calcium carbonate powders with glass powder respectively to form three kinds of initial mixtures, wherein the calcium carbonate content is 0.1%-5%; (4)在三种初始混合料中分别加入重量比为0.1％-0.5％的纳米氧化锌粉、0.05％-0.1％的脱模剂、0.1-1％酚醛树脂粘结剂，均匀混合制得3组混合料；(4) Add 0.1%-0.5% of nano-zinc oxide powder, 0.05%-0.1% of mold release agent and 0.1-1% of phenolic resin binder to the three initial mixtures, and mix them uniformly to obtain 3 groups of mixtures; (5)将3组混合料分别模压成型，得到3组压实板；(5) 3 groups of mixed materials are respectively molded to obtain 3 groups of compacted plates; (6)将3组压实板叠层加压至50MPa-300MPa，其中含有平均粒径2-3.5μm碳酸钙粉的压实板在中间；(6) 3 groups of compacted plates are laminated to 50MPa-300MPa, and the compacted plates containing calcium carbonate powder with an average particle size of 2-3.5 μm are in the middle; (7)将叠层压实板升温至200℃～650℃保温烧结，然后继续升温至800℃-1000℃发泡，随后快速冷却至500-600℃保温5-10min，再缓慢冷却至室温取出得到梯度多孔泡沫玻璃。(7) The laminated compacted plate is heated to 200℃～650℃ for heat preservation and sintering, then continue to heat up to 800℃-1000℃ for foaming, then rapidly cooled to 500-600℃ for 5-10min, and then slowly cooled to room temperature and taken out Gradient cellular foam glass is obtained.
CN201911132658.7A 2019-11-06 2019-11-06 Heat-insulating sound-absorbing gradient porous foam glass Pending CN112759268A (en)

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CN104003753A (en) * 2014-05-21 2014-08-27 河北工业大学 Preparation method of an ultra-light graded cell array foam material
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CN107151098A (en) * 2017-06-13 2017-09-12 合肥钢骨玻璃制品有限公司 A kind of quartz foam glass and its production technology
CN206554296U (en) * 2017-03-09 2017-10-13 天津市华利杰科技发展有限公司 A kind of gradient-structure is incubated exterior sheathing
CN108405862A (en) * 2018-03-13 2018-08-17 昆明理工大学 A kind of gradient porous foam Steel material and preparation method
CN108640527A (en) * 2018-08-02 2018-10-12 巩义市欧洁源环保技术服务有限公司 It is a kind of to open pass crystallite foam glass sound absorption acoustic material and preparation method thereof more

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010036970A1 (en) * 2000-03-17 2001-11-01 Park Chung P. Cellular acoustic absorption polymer foam having improved thermal insulating performance
CN1559947A (en) * 2004-02-23 2005-01-05 中国家用电器研究院 Method for Producing Foam Glass Using Waste Picture Tube
CN102561532A (en) * 2011-12-16 2012-07-11 南京航空航天大学 Functionally-graded cellular-concrete thermal-insulating material and preparation method thereof
CN104118980A (en) * 2013-04-28 2014-10-29 浙江高明玻璃有限公司 Method for preparing aperture-controllable low-temperature foam glass
CN103332958A (en) * 2013-07-09 2013-10-02 广东天弼陶瓷有限公司 Foamed ceramic with gradient pore structure and preparation method thereof
CN103496854A (en) * 2013-08-29 2014-01-08 朱均 Foam glass and its manufacturing method
CN104003753A (en) * 2014-05-21 2014-08-27 河北工业大学 Preparation method of an ultra-light graded cell array foam material
CN104030572A (en) * 2014-07-01 2014-09-10 武汉理工大学 High-performance gradient foam glass thermal insulation material and manufacturing method thereof
CN105948467A (en) * 2016-04-22 2016-09-21 天津大学 Preparation method of low density and high strength foam glass sintering at low temperature
CN206554296U (en) * 2017-03-09 2017-10-13 天津市华利杰科技发展有限公司 A kind of gradient-structure is incubated exterior sheathing
CN107151098A (en) * 2017-06-13 2017-09-12 合肥钢骨玻璃制品有限公司 A kind of quartz foam glass and its production technology
CN108405862A (en) * 2018-03-13 2018-08-17 昆明理工大学 A kind of gradient porous foam Steel material and preparation method
CN108640527A (en) * 2018-08-02 2018-10-12 巩义市欧洁源环保技术服务有限公司 It is a kind of to open pass crystallite foam glass sound absorption acoustic material and preparation method thereof more

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Inventor after: Chen Zhaofeng

Inventor after: Zhang Duanyin

Inventor after: Yang Lixia

Inventor before: Chen Zhaofeng

Inventor before: Zhang Duanyin

WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20210507