CN103086587A - Preparation method of expanded vermiculite foam glass insulating material - Google Patents
Preparation method of expanded vermiculite foam glass insulating material Download PDFInfo
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- CN103086587A CN103086587A CN2013100561162A CN201310056116A CN103086587A CN 103086587 A CN103086587 A CN 103086587A CN 2013100561162 A CN2013100561162 A CN 2013100561162A CN 201310056116 A CN201310056116 A CN 201310056116A CN 103086587 A CN103086587 A CN 103086587A
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Abstract
The invention discloses a preparation method of an expanded vermiculite foam glass insulating material. The preparation method comprises the steps of taking natural mineral vermiculite and waste glass as primary materials; taking water glass as a foaming agent and a binder; doping a proper amount of auxiliary additive; ball-milling, pre-heating, sintering, foaming, cooling and annealing to obtain the expanded vermiculite foam glass insulating material. The foam glass insulating material is good in pore structure, light in weight, low in water absorption, small in heat conductivity coefficient, good in heat preservation effect, heat insulation effect and flame retardant efficiency, wide in material source, easy to obtain the materials, low in cost, energy-saving and environment-friendly, wide in development prospect, and is an ideal building insulating material; and the combustion performance can achieve level A.
Description
Technical field
The present invention relates to a kind of inorganic heat insulation material, be specifically related to expanded vermiculite foam glass thermal insulation material and preparation method thereof.
Technical background
In recent years, the fire failure that causes because of architecture exterior wall insulating materials took place frequently, and the use of organic insulation material is very limited.Multicellular glass is the superior new green environment protection material of construction of a kind of thermal and insulating performance, belongs to inorganic materials, and combustionproperty can reach the A level.It has the advantages such as apparent density is little, physical strength is high, water-intake rate is low, moisture permeable coefficient is low, the coefficient of expansion is little, freezing and thawing performance is good, thermal conductivity is low, thermal stability is good, do not burn, corrosion-resistant, processability is good.
The starting material of preparation multicellular glass mainly adopt glass powder at present, and its source is comparatively narrow, and production cost is higher.The vermiculite mineral products are that China has one of nonmetallic minerals of potential advantages, and wide material sources are cheap.The violent expansion can occur in vermiculite under 850 ℃ of-950 ℃ of high temperature, form expanded vermiculite, expanded vermiculite has the characteristics such as fire prevention, insulation, heat insulation, sound absorption, after mixing with glass powder under the Additives such as whipping agent roasting can obtain to have some strength and the good external-wall heat-insulation material of heat-insulating property.It not only can be used for the heat-insulation and heat-preservation on covil construction exterior wall and roof, also can be widely used in the fields such as oil, chemical industry, underground works, defence and military, can reach the effect of heat insulation, insulation, cold insulation, sound-absorbing.
Summary of the invention
The invention provides a kind of preparation method of expanded vermiculite foam glass thermal insulation material, starting material adopt glass powder and natural vermiculite, take water glass as whipping agent, mix suitable supplementary additive, form through preheating, sintering, foaming, cooling, annealing.Purpose is to take full advantage of the expansion of natural mineral vermiculite, improves thermal and insulating performance, and then improves quality of materials, reduces costs simultaneously.
For achieving the above object, the technical solution used in the present invention is:
(1) the natural mineral vermiculite is pulverized, cullet is milled to below 200 orders;
(2) press massfraction with the glass powder of 60%-90%, the vermiculite of 10%-40%, the admixture of 4-10% adds the water glass solution of 15%-25%, after stirring the admixtion of vermiculite multicellular glass;
(3) above-mentioned admixtion is put into the high temperature steel mould and make the flats base substrate, put into baking oven and dry;
(4) base substrate after drying is put into process furnace and is heated, and fires program as follows:
Pre-heating stage rises to 400 ℃ from room temperature with the heat-up rate of 5-10 ℃/minute, is incubated 30 minutes;
In the sintering stage, heat-up rate is warming up to 850-950 ℃ with 10-20 ℃/minute;
Foaming stages, insulation is 30-60 minute under 850-950 ℃ of constant temperature;
Quick cooling stages, speed of cooling is 15-20 ℃/minute, is cooled to 550-650 ℃;
Annealing stage, cooling rate is 1-2 ℃/minute, is annealed to and gets expanded vermiculite multicellular glass below 50 ℃.
The main raw material that the present invention adopts is natural mineral vermiculite and glass cullet, and during at 850 ℃-950 ℃, violent expansion can occur vermiculite, forms thus expanded vermiculite when Heating temperature.The thermal conductivity of expanded vermiculite is low, unit weight is light, corrosion-resistant, have good insulation, heat-proof quality, and cheap, after merging with glass powder, can improve the multicellular glass thermal and insulating performance, reduce unit weight.
Beneficial effect of the present invention is to take full advantage of rejected material and natural mineral, when improving the multicellular glass quality, reduces cost, saves cost.Manufacture craft of the present invention simply not only can be used for the heat-insulation and heat-preservation on covil construction exterior wall and roof, also can be widely used in the fields such as oil, chemical industry, underground works, defence and military, can reach the effect of heat insulation, insulation, cold insulation, sound-absorbing.
Embodiment
Example 1 is pressed massfraction with 55% glass powder, 14% vermiculite, 2.5% borax, 1.5% tertiary sodium phosphate, 2% boric acid evenly mixes, and adds 25% water glass solution, after stirring the admixtion of vermiculite multicellular glass; Above-mentioned admixtion is put into the high temperature steel mould makes the flats base substrate, put into baking oven and smoked 2 hours, the base substrate after oven dry is put into process furnace heat, fire program as follows:
Pre-heating stage rises to 400 ℃ from room temperature with the heat-up rate of 5 ℃/minute, is incubated 30 minutes;
In the sintering stage, heat-up rate is warming up to 850 ℃ with 10 ℃/minute;
Foaming stages, insulation is 60 minutes under 850 ℃ of constant temperature;
Cooling stages, with 15 ℃/minute, be cooled to 550 ℃ fast;
Annealing stage, cooling rate is 1 ℃/minute, is annealed to below 50 ℃.
The vermiculite foam glass thermal insulation material that adopts aforesaid method to obtain, its performance is: unit weight 410kg/m
3, ultimate compression strength 3MPa, folding strength 1MPa, thermal conductivity 0.041W/mk, water-intake rate＜5% (24 hours volume water absorption rates).
Example 2 is pressed massfraction with 53% glass powder, 20% vermiculite, 3.5% borax, 2% tertiary sodium phosphate, 1.5% boric acid evenly mixes, and adds 20% water glass solution, after stirring the admixtion of vermiculite multicellular glass; Above-mentioned admixtion is put into the high temperature steel mould make the flats base substrate, put into baking oven and smoked 2 hours.Base substrate after oven dry is put into process furnace heats, fire program as follows:
Pre-heating stage rises to 400 ℃ from room temperature with the heat-up rate of 8 ℃/minute, is incubated 30 minutes;
In the sintering stage, heat-up rate is warming up to 900 ℃ with 15 ℃/minute;
Foaming stages, insulation is 40 minutes under 900 ℃ of constant temperature;
Cooling stages, with 18 ℃/minute, be cooled to 600 ℃ fast;
Annealing stage, cooling rate is 1 ℃/minute, is annealed to below 50 ℃.
The vermiculite foam glass thermal insulation material that adopts aforesaid method to obtain, its performance is: unit weight 370kg/m
3, ultimate compression strength 3.8MPa, folding strength 1.5MPa, thermal conductivity 0.045W/mk, water-intake rate＜5% (24 hours volume water absorption rates).
Example 3 is pressed massfraction with 45% glass powder, 30% vermiculite, 4% borax, 3% tertiary sodium phosphate, 1% boric acid evenly mixes, and adds 17% water glass solution, after stirring the admixtion of vermiculite multicellular glass; Above-mentioned admixtion is put into the high temperature steel mould make the flats base substrate, put into baking oven and smoked 2 hours.Base substrate after oven dry is put into process furnace heats, fire program as follows:
Pre-heating stage rises to 400 ℃ from room temperature with the heat-up rate of 10 ℃/minute, is incubated 30 minutes;
In the sintering stage, heat-up rate is warming up to 950 ℃ with 20 ℃/minute;
Foaming stages, insulation is 30 minutes under 950 ℃ of constant temperature;
Cooling stages, with 20 ℃/minute, be cooled to 650 ℃ fast;
Annealing stage, cooling rate is 1 ℃/minute, is annealed to below 50 ℃.
The vermiculite foam glass thermal insulation material that adopts aforesaid method to obtain, its performance is: unit weight 330kg/m
3, ultimate compression strength 4.6MPa, folding strength 1.7MPa, thermal conductivity 0.051W/mk, water-intake rate＜5% (24 hours volume water absorption rates).
The expanded vermiculite multicellular glass structural strength that the present invention produces is good, lightweight, and water-intake rate is low, and thermal conductivity is little, has good thermal insulation, flame retardant effect.Manufacture craft of the present invention is simple to operate, and raw material fully adopts rejected material and natural mineral, and is with low cost, energy-conserving and environment-protective, it is used for roof and exterior-wall heat insulation as heat preserving and insulating material, can effectively reduce the heating and refrigeration expense, and have higher security and weather resistance, development prospect is wide.
Claims (1)
1. the preparation method of vermiculite multicellular glass is characterized in that comprising the following steps:
(1) the natural mineral vermiculite is pulverized, cullet is milled to below 200 orders;
(2) press massfraction with the glass powder of 60%-90%, the vermiculite of 10%-40%, the admixture of 4-10% adds the water glass solution of 15%-25%, after stirring the admixtion of vermiculite multicellular glass;
(3) above-mentioned admixtion is put into the high temperature steel mould and make the flats base substrate, put into baking oven and dry;
(4) base substrate after drying is put into process furnace and is heated, and fires program as follows:
Pre-heating stage rises to 400 ℃ from room temperature with the heat-up rate of 5-10 ℃/minute, is incubated 30 minutes;
In the sintering stage, heat-up rate is warming up to 850-950 ℃ with 10-20 ℃/minute;
Foaming stages, insulation is 30-60 minute under 850-950 ℃ of constant temperature;
Quick cooling stages, speed of cooling is 15-20 ℃/minute, is cooled to 550-650 ℃;
Annealing stage, cooling rate is 1-2 ℃/minute, is annealed to and gets expanded vermiculite multicellular glass below 50 ℃.
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| CN201310056116.2A CN103086587B (en) | 2013-02-22 | 2013-02-22 | The preparation method of expanded vermiculite foam glass thermal insulation material |
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| CN201310056116.2A CN103086587B (en) | 2013-02-22 | 2013-02-22 | The preparation method of expanded vermiculite foam glass thermal insulation material |
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| CN103086587A true CN103086587A (en) | 2013-05-08 |
| CN103086587B CN103086587B (en) | 2015-12-02 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106674595A (en) * | 2016-11-22 | 2017-05-17 | 闫博文 | Preparation method of environment-friendly compound fire retarding agent used for flame retardant plastic |
| CN107921492A (en) * | 2015-02-17 | 2018-04-17 | 南洋理工大学 | The method for manufacturing light material |
| CN107986733A (en) * | 2017-11-29 | 2018-05-04 | 滨州学院 | Flame-retardant thermal insulation material comprising the modified expanded vermiculite of ceramic fibre and preparation method thereof |
| CN115041187A (en) * | 2022-07-26 | 2022-09-13 | 南京中洲环保科技有限公司 | Catalyst for catalyzing ozone oxidation and preparation method thereof |
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| GB1000136A (en) * | 1961-05-02 | 1965-08-04 | Werner Hermann Kreidl | Insulating material and process for its production |
| JPS63252932A (en) * | 1987-04-06 | 1988-10-20 | Nippon Funen Kk | Production of foamed glass board |
| CN1164520A (en) * | 1997-03-28 | 1997-11-12 | 大庆油田管理局油田建设设计研究院 | Pumice foam glass thermal insulation material |
| CN101113076A (en) * | 2007-07-05 | 2008-01-30 | 东北大学 | Microcrystal foam glass prepared by kerosene shale ash and manufacturing method thereof |
| CN102515551A (en) * | 2011-12-01 | 2012-06-27 | 南京工业大学 | Multi-hole foam glass carrier for fast mass transfer biological fluidized bed and preparation method and application thereof |
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2013
- 2013-02-22 CN CN201310056116.2A patent/CN103086587B/en not_active Expired - Fee Related
Patent Citations (5)
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| GB1000136A (en) * | 1961-05-02 | 1965-08-04 | Werner Hermann Kreidl | Insulating material and process for its production |
| JPS63252932A (en) * | 1987-04-06 | 1988-10-20 | Nippon Funen Kk | Production of foamed glass board |
| CN1164520A (en) * | 1997-03-28 | 1997-11-12 | 大庆油田管理局油田建设设计研究院 | Pumice foam glass thermal insulation material |
| CN101113076A (en) * | 2007-07-05 | 2008-01-30 | 东北大学 | Microcrystal foam glass prepared by kerosene shale ash and manufacturing method thereof |
| CN102515551A (en) * | 2011-12-01 | 2012-06-27 | 南京工业大学 | Multi-hole foam glass carrier for fast mass transfer biological fluidized bed and preparation method and application thereof |
Non-Patent Citations (2)
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| 石荣铭等: "废玻璃珍珠岩隔热保温材料", 《化学建材》, no. 2, 30 April 1998 (1998-04-30) * |
| 范玲玲等: "利用珍珠岩尾粉制备发泡材料", 《化学研究》, vol. 22, no. 1, 31 January 2011 (2011-01-31) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107921492A (en) * | 2015-02-17 | 2018-04-17 | 南洋理工大学 | The method for manufacturing light material |
| CN106674595A (en) * | 2016-11-22 | 2017-05-17 | 闫博文 | Preparation method of environment-friendly compound fire retarding agent used for flame retardant plastic |
| CN107986733A (en) * | 2017-11-29 | 2018-05-04 | 滨州学院 | Flame-retardant thermal insulation material comprising the modified expanded vermiculite of ceramic fibre and preparation method thereof |
| CN107986733B (en) * | 2017-11-29 | 2020-07-28 | 山东建筑大学 | Flame-retardant heat-insulating material containing ceramic fiber modified expanded vermiculite and preparation method thereof |
| CN115041187A (en) * | 2022-07-26 | 2022-09-13 | 南京中洲环保科技有限公司 | Catalyst for catalyzing ozone oxidation and preparation method thereof |
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| CN103086587B (en) | 2015-12-02 |
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| C14 | Grant of patent or utility model | ||
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| CB03 | Change of inventor or designer information |
Inventor after: Liu Chunliang Inventor after: Chen Jiang Inventor after: Zhao Shangming Inventor after: Lin Wei Inventor after: Wang Lu Inventor before: Li Gang Inventor before: Song Qiang Inventor before: Jiang Shuguang Inventor before: Ma Yuwei Inventor before: Li Jie |
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Effective date of registration: 20170619 Address after: 830000 No. 235 Hongshan Road, Shuimogou District, Xinjiang, Urumqi Co-patentee after: XINJIANG BEIXIN NEW BUILDING MATERIALS CO.,LTD. Patentee after: XINJIANG BNBM INDUSTRY GROUP Co.,Ltd. Address before: 832000 the Xinjiang Uygur Autonomous Region Shihezi city four road Shihezi University Patentee before: Shihezi University |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 |
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| CF01 | Termination of patent right due to non-payment of annual fee |