CN103114502A - Method for preparing high-grade low-temperature bottle insulating paper - Google Patents
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- CN103114502A CN103114502A CN2013100284329A CN201310028432A CN103114502A CN 103114502 A CN103114502 A CN 103114502A CN 2013100284329 A CN2013100284329 A CN 2013100284329A CN 201310028432 A CN201310028432 A CN 201310028432A CN 103114502 A CN103114502 A CN 103114502A
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Abstract
The invention discloses a method for preparing high-grade low-temperature bottle insulating paper, which comprises the following steps: 1) adding 60-85 wt% of alkali-free glass fibers with an average diameter of 0.1-0.3 mu m and 15-40 wt% of high-alkali glass fibers with an average diameter of 0.3-0.5 mu m in a sulfuric-acid-containing aqueous solution so as to carry out dye-beating dispersion; 2) diluting pulp obtained in the step 1), removing slag in the pulp, then carrying out wet-process molding on the obtained product by using a paper-making machine so as to obtain wet paper, and carrying out suction dehydration on the wet paper; and 3) carrying out drying treatment on the wet paper obtained in the step 2) so as to obtain a product. The low-temperature bottle insulating paper prepared by using the method disclosed by the invention has the advantages of low coefficient of thermal conductivity, strong contact thermal resistance, good uniformity, low vacuum gas lowering rate, light weight, wide working temperature range, non-burning in the case of meeting open fire and the like, therefore, the insulating paper is a preferred insulating material for low-temperature pipes and containers for storing and transporting copious cooling liquid such as liquid oxygen, liquid hydrogen, liquefied natural gas, liquid nitrogen, liquid argon, liquid helium and the like.
Description
Technical field
The present invention relates to the heat-insulating material technical field, be specifically related to a kind of preparation method of high grade low-temp bottle sheathing paper.
Background technology
Along with the development of deep cooling industry in China, Cryogenic Thermal Insulating Materials will be also the emphasis in the deep cooling industry, and demand will be increasing.And insulation material commonly used has polyurethane foam heat insulation material, polyvinyl chloride insulation material and simple glass heat-preservation cotton etc., and their performance sees Table 1.
Because the specific area of above-mentioned insulation material is smaller, so thermal conductivity factor is large, and heat insulation effect is limited, can not use as Cryogenic Thermal Insulating Materials.
Summary of the invention
In view of this, the invention provides a kind of preparation method of high grade low-temp bottle sheathing paper, the low temperature bottle sheathing paper specific area of the method preparation is large, thermal conductivity factor is low, high insulating effect.
The preparation method of high grade low-temp bottle sheathing paper of the present invention comprises the following steps:
1) be that 60%～85% average diameter is that the average diameter of the alkali-free glass fibre of 0.1～0.3 μ m and percentage by weight 15%～40% is the dispersion of pulling an oar in being added with the aqueous solution of sulfuric acid of the high alkali glass fibre of 0.3～0.5 μ m with percentage by weight, and the mass concentration of controlling slurry is 2.5%～3.5%, beating degree is 50～52 ° of SR, and acidity is pH 3.0～3.5;
2) it is 0.2%～0.4% that the slurry that step 1) is obtained is diluted to mass concentration, slagging-off, then carry out wet moulding with paper machine again, obtains l Water Paper, under vacuum is the condition of 0.1～0.5MPa, l Water Paper is aspirated dehydration again, make the moisture content of l Water Paper＜10%;
3) with step 2) l Water Paper that obtains carries out drying and processes under 150～180 ℃, get product.
Further, the preparation method of described high alkali glass fibre and alkali-free glass fibre is: after high-alkali glass ball or e-glass marble fusing, it is lower of the arrangement small opening of 0.5～1mm through diameter, the wire drawing diameter control is at 10～20 μ m, drawing speed is 2.5～3m/min, then under 1600～1800 ℃ of high temperature, with the flame of combustion chamber ejection, glass yarn is made glass fibre below 1 μ m, the nozzle width of combustion chamber is 6～10mm, and the winding-up air velocity is 800～1000m/s.
Further, the fusion temperature of described high-alkali glass ball is 1300～1500 ℃, and the fusion temperature of described e-glass marble is 1700～1900 ℃.
Further, wire drawing bushing material used is the GH4755 alloy, and the nozzle material is No. 22 zircon corundum bricks.
During suction processed further, described step 2), minute three sections vacuum draves, the vacuum of first paragraph is 0.1～0.2Mpa, and the vacuum of second segment is 0.2～0.25Mpa, and the vacuum of the 3rd section is 0.4～0.5Mpa.
Further, when the drying in described step 3) is processed, minute three sections dryings, the temperature of first paragraph is 180 ℃, and the temperature of second segment is 150 ℃, and the temperature of the 3rd section is 150 ℃, is dried to the final products moisture lower than 0.03%.
Beneficial effect of the present invention is: the ultra-fine fibre glass of the present invention take average diameter as 0.1～0.5 μ m makes low temperature bottle sheathing paper as raw material through the papermaking moulding; Due to the average diameter of the present invention's fiber used less than 0.5 μ m, wherein the thinnest average fibre diameter is lower than 0.1 μ m, this is other relevant insulation material average fibre diameter that is beyond one's reach, the specific area of the low temperature bottle sheathing paper that is therefore made by the present invention is large, thermal conductivity factor is low, high insulating effect, and owing to adopting the papermaking moulding process, make it have the advantages such as surfacing, density compactness, steady quality, thermal conductivity factor be even.
The low temperature bottle sheathing paper of the present invention preparation has that thermal conductivity factor is low, thermal contact resistance large, the venting rate is little under good uniformity, vacuum, grammes per square metre is light, operating temperature range is wide, meet the advantages such as naked light can not burn, and is the heat-insulating material of the cryogenic liquid storage-transport vessels such as liquid oxygen, liquid hydrogen, liquefied natural gas and liquid helium, liquid argon, liquid nitrogen, cryogenic piping first-selection.
The specific embodiment
Below will be described in detail the preferred embodiments of the present invention.
Embodiment 1
The preparation method of the high grade low-temp bottle sheathing paper of the present embodiment comprises the following steps:
1) preparation high alkali glass fibre: after 1300 ℃ of fusings of high-alkali glass ball, it is lower of the arrangement small opening of 1mm through diameter, the wire drawing diameter control is at 10 μ m, drawing speed is 2.5m/min, again under 1600 ℃ of high temperature, with the flame of combustion chamber ejection, glass yarn is made glass fibre below 1 μ m, the nozzle width of combustion chamber is 10mm, and the winding-up air velocity is 800m/s;
Preparation alkali-free glass fibre: after 1700 ℃ of fusings of e-glass marble, it is lower of the arrangement small opening of 0.5mm through diameter, the wire drawing diameter control is at 10 μ m, drawing speed is 3m/min, again under 1800 ℃ of high temperature, with the flame of combustion chamber ejection, glass yarn is made glass fibre below 0.5 μ m, the nozzle width of combustion chamber is 6mm, and the winding-up air velocity is 1000m/s;
Wire drawing bushing material used is the GH4755 alloy, and the nozzle material is No. 22 zircon corundum bricks;
2) be that 60% average diameter is that the average diameter of the alkali-free glass fibre of 0.3 μ m and percentage by weight 40% is the dispersion of pulling an oar in being added with the aqueous solution of sulfuric acid of the high alkali glass fibre of 0.5 μ m with percentage by weight, and the mass concentration of controlling slurry is 3%, beating degree is 52 ° of SR, and acidity is pH 3.0;
3) with step 2) to be diluted to mass concentration be 0.3% for the slurry that obtains, then slagging-off, then carries out wet moulding with paper machine, obtains l Water Paper, this wet therapy forming process is to copy paper rear end principle similar;
Under vacuum is the condition of 0.1～0.5MPa, l Water Paper is aspirated dehydration again, minute three sections vacuum draves; First paragraph slightly dewaters, and its vacuum is 0.1Mpa; It is long that second segment guarantees that waterline is difficult for, and water absorption reaches 40%, and its vacuum is 0.2Mpa, the moisture content of the 3rd section assurance l Water Paper＜10%, and its vacuum is 0.5Mpa;
4) l Water Paper that step 3) is obtained carries out drying under 150～180 ℃ processes, minute three sections dryings, and the temperature of first paragraph is 180 ℃, and the temperature of second segment is 150 ℃, and the temperature of the 3rd section is 150 ℃, is dried to the final products moisture lower than 0.03%.
Embodiment 2
The preparation method of the high grade low-temp bottle sheathing paper of the present embodiment comprises the following steps:
1) preparation high alkali glass fibre: after 1400 ℃ of fusings of high-alkali glass ball, it is lower of the arrangement small opening of 1mm through diameter, the wire drawing diameter control is at 10 μ m, drawing speed is 2.5m/min, again under 1600 ℃ of high temperature, with the flame of combustion chamber ejection, glass yarn is made glass fibre below 1 μ m, the nozzle width of combustion chamber is 10mm, and the winding-up air velocity is 800m/s;
Preparation alkali-free glass fibre: after 1800 ℃ of fusings of e-glass marble, it is lower of the arrangement small opening of 0.5mm through diameter, the wire drawing diameter control is at 10 μ m, drawing speed is 3m/min, again under 1800 ℃ of high temperature, with the flame of combustion chamber ejection, glass yarn is made glass fibre below 0.5 μ m, the nozzle width of combustion chamber is 6mm, and the winding-up air velocity is 1000m/s;
Wire drawing bushing material used is the GH4755 alloy, and the nozzle material is No. 22 zircon corundum bricks;
2) be that 75% average diameter is that the average diameter of the alkali-free glass fibre of 0.2 μ m and percentage by weight 25% is the dispersion of pulling an oar in being added with the aqueous solution of sulfuric acid of the high alkali glass fibre of 0.4 μ m with percentage by weight, and the mass concentration of controlling slurry is 3.5%, beating degree is 50 ° of SR, and acidity is pH 3.5;
3) with step 2) to be diluted to mass concentration be 0.4% for the slurry that obtains, then slagging-off, then carries out wet moulding with paper machine, obtains l Water Paper, this wet therapy forming process is to copy paper rear end principle similar;
Under vacuum is the condition of 0.1～0.5MPa, l Water Paper is aspirated dehydration again, minute three sections vacuum draves; First paragraph slightly dewaters, and its vacuum is 0.1Mpa; It is long that second segment guarantees that waterline is difficult for, and water absorption reaches 40%, and its vacuum is 0.2Mpa, the moisture content of the 3rd section assurance l Water Paper＜10%, and its vacuum is 0.4Mpa;
4) l Water Paper that step 3) is obtained carries out drying under 150～180 ℃ processes, minute three sections dryings, and the temperature of first paragraph is 180 ℃, and the temperature of second segment is 150 ℃, and the temperature of the 3rd section is 150 ℃, is dried to the final products moisture lower than 0.03%.
Embodiment 3
The preparation method of the high grade low-temp bottle sheathing paper of the present embodiment comprises the following steps:
1) preparation high alkali glass fibre: after 1500 ℃ of fusings of high-alkali glass ball, it is lower of the arrangement small opening of 1mm through diameter, the wire drawing diameter control is at 10 μ m, drawing speed is 2.5m/min, again under 1600 ℃ of high temperature, with the flame of combustion chamber ejection, glass yarn is made glass fibre below 1 μ m, the nozzle width of combustion chamber is 10mm, and the winding-up air velocity is 800m/s;
Preparation alkali-free glass fibre: after 1900 ℃ of fusings of e-glass marble, it is lower of the arrangement small opening of 0.5mm through diameter, the wire drawing diameter control is at 10 μ m, drawing speed is 3m/min, again under 1800 ℃ of high temperature, with the flame of combustion chamber ejection, glass yarn is made glass fibre below 0.5 μ m, the nozzle width of combustion chamber is 6mm, and the winding-up air velocity is 1000m/s;
Wire drawing bushing material used is the GH4755 alloy, and the nozzle material is No. 22 zircon corundum bricks;
2) be that 85% average diameter is that the average diameter of the alkali-free glass fibre of 0.1 μ m and percentage by weight 15% is the dispersion of pulling an oar in being added with the aqueous solution of sulfuric acid of the high alkali glass fibre of 0.3 μ m with percentage by weight, and the mass concentration of controlling slurry is 2.5%, beating degree is 52 ° of SR, and acidity is pH 3.0;
3) with step 2) to be diluted to mass concentration be 0.2% for the slurry that obtains, then slagging-off, then carries out wet moulding with paper machine, obtains l Water Paper, this wet therapy forming process is to copy paper rear end principle similar;
Under vacuum is the condition of 0.1～0.5MPa, l Water Paper is aspirated dehydration again, minute three sections vacuum draves; First paragraph slightly dewaters, and its vacuum is 0.2Mpa; It is long that second segment guarantees that waterline is difficult for, and water absorption reaches 40%, and its vacuum is 0.25Mpa, the moisture content of the 3rd section assurance l Water Paper＜10%, and its vacuum is 0.5Mpa;
4) l Water Paper that step 3) is obtained carries out drying under 150～180 ℃ processes, minute three sections dryings, and the temperature of first paragraph is 180 ℃, and the temperature of second segment is 150 ℃, and the temperature of the 3rd section is 150 ℃, is dried to the final products moisture lower than 0.03%.
The low temperature bottle sheathing paper that embodiment 1 ~ 3 is prepared carries out Performance Detection, and result is as shown in table 2.
This shows, the thermal conductivity factor of the low temperature bottle sheathing paper that the present invention makes is far below existing insulation material, so high insulating effect.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although by invention has been described with reference to the preferred embodiments of the present invention, but those of ordinary skill in the art is to be understood that, can make various changes to it in the form and details, and not depart from the spirit and scope of the present invention that appended claims limits.
Claims (6)
1. the preparation method of one kind high grade low-temp bottle sheathing paper is characterized in that: comprise the following steps:
1) be that 60%～85% average diameter is that the average diameter of the alkali-free glass fibre of 0.1～0.3 μ m and percentage by weight 15%～40% is the dispersion of pulling an oar in being added with the aqueous solution of sulfuric acid of the high alkali glass fibre of 0.3～0.5 μ m with percentage by weight, and the mass concentration of controlling slurry is 2.5%～3.5%, beating degree is 50～52 ° of SR, and acidity is pH 3.0～3.5;
2) it is 0.2%～0.4% that the slurry that step 1) is obtained is diluted to mass concentration, slagging-off, then carry out wet moulding with paper machine again, obtains l Water Paper, under vacuum is the condition of 0.1～0.5MPa, l Water Paper is aspirated dehydration again, make the moisture content of l Water Paper＜10%;
3) with step 2) l Water Paper that obtains carries out drying and processes under 150～180 ℃, get product.
2. the preparation method of high grade low-temp bottle sheathing paper according to claim 1, it is characterized in that: the preparation method of described high alkali glass fibre and alkali-free glass fibre is: after high-alkali glass ball or e-glass marble fusing, it is lower of the arrangement small opening of 0.5～1mm through diameter, the wire drawing diameter control is at 10～20 μ m, drawing speed is 2.5～3m/min, again under 1600～1800 ℃ of high temperature, with the flame of combustion chamber ejection, glass yarn is made glass fibre below 1 μ m, the nozzle width of combustion chamber is 6～10mm, the winding-up air velocity is 800～1000m/s.
3. the preparation method of high grade low-temp bottle sheathing paper according to claim 2, it is characterized in that: the fusion temperature of described high-alkali glass ball is 1300～1500 ℃, the fusion temperature of described e-glass marble is 1700～1900 ℃.
4. the preparation method of high grade low-temp bottle sheathing paper according to claim 3, it is characterized in that: wire drawing bushing material used is the GH4755 alloy, the nozzle material is No. 22 zircon corundum bricks.
5. the preparation method of the described high grade low-temp bottle sheathing paper of according to claim 1 to 4 any one, it is characterized in that: during suction processed described step 2), divide three sections vacuum draves, the vacuum of first paragraph is 0.1～0.2Mpa, the vacuum of second segment is 0.2～0.25Mpa, and the vacuum of the 3rd section is 0.4～0.5Mpa.
6. the preparation method of the described high grade low-temp bottle sheathing paper of according to claim 1 to 4 any one, it is characterized in that: when the drying in described step 3) is processed, divide three sections dryings, the temperature of first paragraph is 180 ℃, the temperature of second segment is 150 ℃, the temperature of the 3rd section is 150 ℃, is dried to the final products moisture lower than 0.03%.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277631A (en) * | 2013-05-31 | 2013-09-04 | 重庆再升科技股份有限公司 | Glass-fiber vacuum insulation panel nano core material and preparation method thereof |
| CN103276629A (en) * | 2013-05-31 | 2013-09-04 | 重庆再升科技股份有限公司 | Glass fiber air filter paper with antibacterial property and preparation method thereof |
| CN104294698A (en) * | 2014-08-18 | 2015-01-21 | 常州大利节能新材料有限公司 | Ultrastrong vacuum thermal insulation plate core material manufacturing technology |
| CN107354818A (en) * | 2017-08-02 | 2017-11-17 | 合肥帧讯低温科技有限公司 | A kind of preparation technology of sheathing paper for low-temperature storage tank |
| CN108951291A (en) * | 2018-07-06 | 2018-12-07 | 南京鼎日新材料有限公司 | A kind of low-temperature thermal insulation paper and preparation method thereof |
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| CN101694080A (en) * | 2009-09-30 | 2010-04-14 | 重庆再升科技发展有限公司 | Preparation method of special VIP nanometer core material for refrigerator |
| CN102330871A (en) * | 2011-07-13 | 2012-01-25 | 苏州维艾普新材料有限公司 | Vacuum heat insulation plate core material and manufacturing method thereof |
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Patent Citations (4)
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| JPH0931884A (en) * | 1995-07-11 | 1997-02-04 | Nippon Glass Fiber Co Ltd | Heat-resistant and insulating sheet and its production |
| CN101058961A (en) * | 2006-12-13 | 2007-10-24 | 应建明 | Low-temperature thermal insulation paper, preparation method and application thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277631A (en) * | 2013-05-31 | 2013-09-04 | 重庆再升科技股份有限公司 | Glass-fiber vacuum insulation panel nano core material and preparation method thereof |
| CN103276629A (en) * | 2013-05-31 | 2013-09-04 | 重庆再升科技股份有限公司 | Glass fiber air filter paper with antibacterial property and preparation method thereof |
| CN103277631B (en) * | 2013-05-31 | 2015-11-11 | 重庆再升科技股份有限公司 | A kind of glass-fiber vacuum insulation panel nano core material and preparation method thereof |
| CN104294698A (en) * | 2014-08-18 | 2015-01-21 | 常州大利节能新材料有限公司 | Ultrastrong vacuum thermal insulation plate core material manufacturing technology |
| CN107354818A (en) * | 2017-08-02 | 2017-11-17 | 合肥帧讯低温科技有限公司 | A kind of preparation technology of sheathing paper for low-temperature storage tank |
| CN108951291A (en) * | 2018-07-06 | 2018-12-07 | 南京鼎日新材料有限公司 | A kind of low-temperature thermal insulation paper and preparation method thereof |
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