CN103086587B - The preparation method of expanded vermiculite foam glass thermal insulation material - Google Patents
The preparation method of expanded vermiculite foam glass thermal insulation material Download PDFInfo
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- CN103086587B CN103086587B CN201310056116.2A CN201310056116A CN103086587B CN 103086587 B CN103086587 B CN 103086587B CN 201310056116 A CN201310056116 A CN 201310056116A CN 103086587 B CN103086587 B CN 103086587B
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Abstract
A kind of expanded vermiculite foam glass thermal insulation material, be with natural mineral vermiculite and cullet for main raw material, be whipping agent and tackiness agent with water glass, then mix suitable supplementary additive, form through ball milling, preheating, sintering, foaming, cooling, annealing.This foam glass thermal insulation material pore texture is good, lightweight, and water-intake rate is low, and thermal conductivity is little, have good insulation, heat insulation, flame retardant effect, combustionproperty can reach A level, and starting material are extensively easy to get, with low cost, energy-conserving and environment-protective, be desirable building thermal insulation material, development prospect is wide.
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.
Background technology
In recent years, the fire failure caused because of architecture exterior wall insulating materials took place frequently, and the use of organic insulation material is very limited.Multicellular glass is the new green environment protection material of construction that a kind of thermal and insulating performance is superior, and belong to inorganic materials, combustionproperty can reach 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 preparing multicellular glass at present mainly adopt glass powder, and its source is comparatively narrow, and production cost is higher.Vermiculite mineral products be China have potential advantages nonmetallic minerals it, wide material sources, cheap.Violent expansion can be there is in vermiculite under 850 DEG C of-950 DEG C of high temperature, form expanded vermiculite, expanded vermiculite has the features such as fire prevention, insulation, heat insulation, sound absorption, and after mixing with glass powder, under the Additives such as whipping agent, roasting can obtain and has 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 heat insulation, insulation, cold insulation, sound-absorbing effect.
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 Crude vermiculite, are whipping agent, mix suitable supplementary additive, form through preheating, sintering, foaming, cooling, annealing with water glass.Object is the expansion making full use 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) pulverized by natural mineral vermiculite, cullet is milled to below 200 orders;
(2) by the glass powder of massfraction by 60%-90%, the vermiculite of 10%-40%, the admixture of 4-10%, adds the water glass solution of 15%-25%, obtains the admixtion of vermiculite multicellular glass after stirring;
(3) above-mentioned admixtion is put into high temperature steel mould and make flats base substrate, put into baking oven and dry;
(4) base substrate after oven dry is put into process furnace to heat, fires program as follows:
Pre-heating stage, rises to 400 DEG C from room temperature with the heat-up rate of 5-10 DEG C/min, is incubated 30 minutes;
In the sintering stage, heat-up rate is warming up to 850-950 DEG C with 10-20 DEG C/min;
Foaming stages, is incubated 30-60 minute under 850-950 DEG C of constant temperature;
Quick cooling stages, speed of cooling is 15-2 () DEG C/min, is cooled to 550-650 DEG C;
Annealing stage, cooling rate is 1-2 DEG C/min, is annealed to less than 50 DEG C and obtains expanded vermiculite multicellular glass.
The main raw material that the present invention adopts is natural mineral vermiculite and glass cullet, and when Heating temperature is at 850 DEG C-950 DEG C, violent expansion can occur vermiculite, forms expanded vermiculite thus.The thermal conductivity of expanded vermiculite is low, unit weight is light, corrosion-resistant, there is good insulation, heat-proof quality, and cheap, after merging with glass powder, multicellular glass thermal and insulating performance can be improved, reduce unit weight.
Beneficial effect of the present invention is to make full use of rejected material and natural mineral, while improving multicellular glass quality, reduces cost, cost-saving.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 heat insulation, insulation, cold insulation, sound-absorbing effect.
Embodiment
Example 1, by massfraction by the glass powder of 55%, the vermiculite of 14%, the borax of 2.5%, the tertiary sodium phosphate of 1.5%, the boric acid Homogeneous phase mixing of 2%, adds the water glass solution of 25%, obtains the admixtion of vermiculite multicellular glass after stirring; Above-mentioned admixtion is put into high temperature steel mould and makes flats base substrate, put into baking oven and smoke 2 hours, the base substrate after oven dry is put into process furnace and heats, fire program as follows:
Pre-heating stage, rises to 400 DEG C from room temperature with the heat-up rate of 5 DEG C/min, is incubated 30 minutes;
In the sintering stage, heat-up rate is warming up to 850 DEG C with 10 DEG C/min;
Foaming stages, is incubated 60 minutes under 850 DEG C of constant temperature;
Quick cooling stages, with 15 DEG C/min, is cooled to 550 DEG C;
Annealing stage, cooling rate is 1 DEG C/min, is annealed to less than 50 DEG C.
Adopt the vermiculite foam glass thermal insulation material that aforesaid method obtains, its performance is: unit weight 410kg/m3, ultimate compression strength 3MPa, folding strength 1MPa, thermal conductivity 0.041W/mk, water-intake rate < 5% (24 hours volume water absorption rates).
Example 2, by massfraction by the glass powder of 53%, the vermiculite of 20%, the borax of 3.5%, the tertiary sodium phosphate of 2%, the boric acid Homogeneous phase mixing of 1.5%, adds the water glass solution of 20%, obtains the admixtion of vermiculite multicellular glass after stirring; Above-mentioned admixtion is put into high temperature steel mould and makes flats base substrate, put into baking oven and smoke 2 hours.Base substrate after oven dry is put into process furnace heat, fires program as follows:
Pre-heating stage, rises to 400 DEG C from room temperature with the heat-up rate of 8 DEG C/min, is incubated 30 minutes;
In the sintering stage, heat-up rate is warming up to 900 DEG C with 15 DEG C/min;
Foaming stages, is incubated 40 minutes under 900 DEG C of constant temperature;
Quick cooling stages, with 18 DEG C/min, is cooled to 600 DEG C;
Annealing stage, cooling rate is 1 DEG C/min, is annealed to less than 50 DEG C.
Adopt the vermiculite foam glass thermal insulation material that aforesaid method obtains, its performance is: unit weight 370kg/m3, 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, by massfraction by the glass powder of 45%, the vermiculite of 30%, the borax of 4%, the tertiary sodium phosphate of 3%, the boric acid Homogeneous phase mixing of 1%, adds the water glass solution of 17%, obtains the admixtion of vermiculite multicellular glass after stirring; Above-mentioned admixtion is put into high temperature steel mould and makes flats base substrate, put into baking oven and smoke 2 hours.Base substrate after oven dry is put into process furnace heat, fires program as follows:
Pre-heating stage, rises to 400 DEG C from room temperature with the heat-up rate of 10 DEG C/min, is incubated 30 minutes;
In the sintering stage, heat-up rate is warming up to 950 DEG C with 20 DEG C/min;
Foaming stages, is incubated 30 minutes under 950 DEG C of constant temperature;
Quick cooling stages, with 20 DEG C/min, is cooled to 650 DEG C;
Annealing stage, cooling rate is 1 DEG C/min, is annealed to less than 50 DEG C.
Adopt the vermiculite foam glass thermal insulation material that aforesaid method obtains, its performance is: unit weight 330kg/m3, 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 foam glass structure intensity 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, 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 heating and refrigeration expense, and have higher security and weather resistance, development prospect is wide.
Claims (3)
1. a preparation method for expanded vermiculite multicellular glass, is characterized in that, comprises the following steps:
Pulverized by natural mineral vermiculite, cullet is milled to below 200 orders; By massfraction by the glass powder of 55%, the vermiculite of 14%, the borax of 2.5%, the tertiary sodium phosphate of 1.5%, the boric acid Homogeneous phase mixing of 2%, adds the water glass solution of 25%, obtains the admixtion of vermiculite multicellular glass after stirring; Above-mentioned admixtion is put into high temperature steel mould and makes flats base substrate, put into baking oven and smoke 2 hours, the base substrate after oven dry is put into process furnace and heats, fire program as follows:
Pre-heating stage, rises to 400 DEG C from room temperature with the heat-up rate of 5 DEG C/min, is incubated 30 minutes;
In the sintering stage, heat-up rate is warming up to 850 DEG C with 10 DEG C/min;
Foaming stages, is incubated 60 minutes under 850 DEG C of constant temperature;
Quick cooling stages, with 15 DEG C/min, is cooled to 550 DEG C;
Annealing stage, cooling rate is 1 DEG C/min, is annealed to less than 50 DEG C and obtains expanded vermiculite multicellular glass.
2. a preparation method for expanded vermiculite multicellular glass, is characterized in that, comprises the following steps:
Pulverized by natural mineral vermiculite, cullet is milled to below 200 orders; By massfraction by the glass powder of 53%, the vermiculite of 20%, the borax of 3.5%, the tertiary sodium phosphate of 2%, the boric acid Homogeneous phase mixing of 1.5%, adds the water glass solution of 20%, obtains the admixtion of vermiculite multicellular glass after stirring; Above-mentioned admixtion is put into high temperature steel mould and makes flats base substrate, put into baking oven and smoke 2 hours, the base substrate after oven dry is put into process furnace and heats, fire program as follows:
Pre-heating stage, rises to 400 DEG C from room temperature with the heat-up rate of 8 DEG C/min, is incubated 30 minutes;
In the sintering stage, heat-up rate is warming up to 900 DEG C with 15 DEG C/min;
Foaming stages, is incubated 40 minutes under 900 DEG C of constant temperature;
Quick cooling stages, with 18 DEG C/min, is cooled to 600 DEG C;
Annealing stage, cooling rate is 1 DEG C/min, is annealed to less than 50 DEG C and obtains expanded vermiculite multicellular glass.
3. a preparation method for expanded vermiculite multicellular glass, is characterized in that, comprises the following steps:
Pulverized by natural mineral vermiculite, cullet is milled to below 200 orders; By massfraction by the glass powder of 45%, the vermiculite of 30%, the borax of 4%, the tertiary sodium phosphate of 3%, the boric acid Homogeneous phase mixing of 1%, adds the water glass solution of 17%, obtains the admixtion of vermiculite multicellular glass after stirring; Above-mentioned admixtion is put into high temperature steel mould and makes flats base substrate, put into baking oven and smoke 2 hours, the base substrate after oven dry is put into process furnace and heats, fire program as follows:
Pre-heating stage, rises to 400 DEG C from room temperature with the heat-up rate of 10 DEG C/min, is incubated 30 minutes;
In the sintering stage, heat-up rate is warming up to 950 DEG C with 20 DEG C/min;
Foaming stages, is incubated 30 minutes under 950 DEG C of constant temperature;
Quick cooling stages, with 20 DEG C/min, is cooled to 650 DEG C;
Annealing stage, cooling rate is 1 DEG C/min, is annealed to less than 50 DEG C and obtains expanded vermiculite multicellular glass.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016133463A1 (en) * | 2015-02-17 | 2016-08-25 | Nanyang Technological University | Method of manufacturing a lightweight 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 |
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1000136A (en) * | 1961-05-02 | 1965-08-04 | Werner Hermann Kreidl | Insulating material and process for its production |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63252932A (en) * | 1987-04-06 | 1988-10-20 | Nippon Funen Kk | Production of foamed glass board |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1000136A (en) * | 1961-05-02 | 1965-08-04 | Werner Hermann Kreidl | Insulating material and process for its production |
| 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)
| Title |
|---|
| 利用珍珠岩尾粉制备发泡材料;范玲玲等;《化学研究》;20110131;第22卷(第1期);第92-95页 * |
| 废玻璃珍珠岩隔热保温材料;石荣铭等;《化学建材》;19980430(第2期);第37页 * |
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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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Granted publication date: 20151202 |