CN108914703A - A kind of preparation method of low-temperature thermal insulation paper - Google Patents
A kind of preparation method of low-temperature thermal insulation paper Download PDFInfo
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- CN108914703A CN108914703A CN201810825820.2A CN201810825820A CN108914703A CN 108914703 A CN108914703 A CN 108914703A CN 201810825820 A CN201810825820 A CN 201810825820A CN 108914703 A CN108914703 A CN 108914703A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4209—Inorganic fibres
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4209—Inorganic fibres
- D04H1/4218—Glass fibres
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4209—Inorganic fibres
- D04H1/4242—Carbon fibres
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/492—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/38—Inorganic fibres or flakes siliceous
- D21H13/40—Inorganic fibres or flakes siliceous vitreous, e.g. mineral wool, glass fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/46—Non-siliceous fibres, e.g. from metal oxides
- D21H13/50—Carbon fibres
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- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
The present invention relates to a kind of preparation methods of low-temperature thermal insulation paper, belong to environment-friendly materials technical field.The present invention is combined by wet papermaking process and water jet process, alkali-free glass fibre, ceramic fibre and carbon fiber are prepared into a kind of Cryo Heat Insulation paper material, carbon fiber has many excellent performances, the axial strength and modulus of carbon fiber are high, density is low, higher than performance, no creep, superhigh temperature resistant under non-oxidizing atmosphere, fatigue durability is good, improves heat-insulating property；Ceramic fibre is a kind of fibrous light refractory material, have many advantages, such as that light-weight, high temperature resistant, thermal stability are good, thermal conductivity is low, specific heat is small and mechanical resistant vibration, by alkali-free glass fibre, ceramic fibre and the compound composition three-dimensional network space of carbon fiber and carry out water jet process, the low temperature sheathing paper thermal insulation of materials performance and good flame resistance of preparation, thermal contact resistance is big, and the small profiling of abandonment rate is good under vacuum, dustless, nontoxic, long service life, stability are good.
Description
Technical field
The present invention relates to a kind of preparation methods of low-temperature thermal insulation paper, belong to environment-friendly materials technical field.
Background technique
All-glass paper is the widely used heat-insulating material in deep cooling Cryo Heat Insulation, is usually used as vacuum multi-layer
Interval insulant in insulation uses, and glass fibre sheathing paper plays vital work to the heat insulation of multiple layer heat insulation structure
With.With the continuous popularization of Cryo Heat Insulation technical application, more requirements also proposed to the performance of thermally insulated container；Especially as liquid
This kind of latent heat of vaporization of nitrogen, liquid hydrogen is small, the cryogenic liquid of low boiling point, requires the heat-insulating property of storage-transport vessel very high.In order to as far as possible
Cryogenic liquid is reduced in storage and the loss in transmission process, improves efficiency of storage, it is necessary to improve the thermal insulation of heat-barrier material
Energy.The multilayer heat insulation low temperature storage-transport vessel overwhelming majority of domestic production uses this material of glass fibre sheathing paper for spacer,
And demand is big, and the specific gravity for accounting for entire production is very big, high production cost.
At present cryogenic liquid storage-transport vessel and its substantially used with circuits ordinary packing insulation and vacuum insulation two major classes.
Vacuum insulation is divided into again：It is high-vacuum insulation, vacuum fiber (powder isolation), high vacuum multiple layer heat insulation, high vacuum multi shields insulation, more
Layer insulation etc., wherein vacuum fiber (powder isolation) is common, and vacuum fiber insulation is divided into organic fiber and inorfil again.Have
Machine fiber uses polyester fiber, and high temperature resistant is poor, easily shrinks, and around burning, area is big, and inorfil glass fabric, there is also cloth covers
Thickness>0.1mm, fiber is thick and generates drawbacks, the powder isolation materials such as evaporative power under vacuum is big and there is the combustion of easily flowing and material
Inherent shortcoming is heated, application field is restricted, and service life is short.
According to document and related data, domestic more advanced common sheathing paper can only produce thickness reluctantly>0.06mm's
Ultra-fine fibre glass sheathing paper, and, base weight lower sheathing paper thinner for requiring, then be difficult to control, it is difficult to wind, paper rises
Wrinkle is serious, and the uniformity cannot ensure, tension intensity is even more to be unable to satisfy user's requirement.Due to low-temperature pressure container ectonexine gap
It is limited, and the installation requirement that insulating paper cannot be less than 50 layers is wound, to constrain the infiltration and development of low-temperature pressure container.Mesh
Preceding common thermal insulation material has polyurethane foam heat insulation material, polyvinyl chloride thermal insulation material and simple glass, heat-preservation cotton etc., still
The specific surface area of above-mentioned thermal insulation material is smaller, therefore thermal coefficient is big, and heat insulation effect is limited, cannot function as Cryogenic Thermal Insulating Materials
It uses.
Novel heat insulation material is researched and developed, bigger profit can be obtained to help enterprise to reduce cost；It can rise simultaneously
To effect that is energy saving, reducing environmental pollution.The development and popularization of the heat-insulating material of economical and efficient are steamed to cryogenic liquid is reduced
Hair, it is energy saving significant.
Summary of the invention
The technical problems to be solved by the invention：Polyester fiber is used for organic fiber, high temperature resistant is poor, easily shrinks, around
It is big to burn area；Inorfil glass fabric, there is also cloth face thicknesses>0.1mm, fiber is thick and generates evaporative power under vacuum
Greatly, the limited problem of the heat insulation effect of thermal insulation material provides a kind of preparation method of low-temperature thermal insulation paper.
In order to solve the above technical problems, the technical solution adopted by the present invention is that：
（1）It in mass fraction is 20% by alkali-free glass fibre, ceramic fibre and carbon fiber that average diameter is 0.2~0.5 μm
Mashing dispersion is carried out in sulfuric acid solution, obtains mixed slurry；
（2）It is 0.2~0.3% that mixed slurry, which is diluted to mass concentration, removes filter residue, then carries out wet forming with paper machine,
L Water Paper is obtained, l Water Paper is processed using 4 spun lacings, obtains spun lacing l Water Paper；Roll compacting dehydration is carried out to spun lacing l Water Paper using double-roll rolling mill,
It must be dehydrated paper, l Water Paper is dried in baking oven to constant weight, Cryo Heat Insulation paper material is obtained.
Step（1）The sulfuric acid solution that alkali-free glass fibre, ceramic fibre and the carbon fiber and mass fraction are 20% is pressed
Mass ratio 1: 0.5: 0.2: 10 mixes.
Step（1）The mashing dispersion condition is that the mass concentration of control slurry is 1~3%, and beating degree is 50~70 °
SR, acidity pH are 2~4.
Step（2）The spun lacing processing conditions is 1.5~3bar, second to the 4th main spun lacing pressure for hydraulic pressure of prewetting
Power is respectively 15~35bar, 70~80bar, 40~50bar.
Step（2）The roll compacting dehydration conditions coefficient is that the pressure between two rolls is 1.8~3.2MPa/cm2, pick-up
It is 70~90%.
Step（2）The drying is dried in three stages, and the temperature of first stage is 160~180 DEG C, keeps the temperature 1~2h；The
The temperature of two-stage is 140~160 DEG C, keeps the temperature 2~3h；The temperature of phase III is 120~150 DEG C, dry to constant weight.
The present invention is compared with other methods, and advantageous effects are：
The present invention is combined by wet papermaking process and water jet process, by alkali-free glass fibre, ceramic fibre and carbon fiber system
A kind of standby Cryo Heat Insulation paper material, carbon fiber have many excellent performances, and the axial strength and modulus of carbon fiber are high, density is low,
Higher than performance, no creep, superhigh temperature resistant under non-oxidizing atmosphere, fatigue durability is good, and specific heat and electric conductivity are between nonmetallic and metal
Between, thermal expansion coefficient is small and has anisotropy, and good corrosion resistance, X-ray transparent is good, good electrical and thermal conductivity performance,
Electromagnetic wave shielding is good etc., and carbon fiber has adsorption function, and the interval insulant that adsorption area is big, can effectively inhale in multilayer heat insulation
The gas that attached interlayer is released reduces interlayer pressure, improves heat-insulating property；Ceramic fibre is a kind of fibrous light refractory material,
Have many advantages, such as that light-weight, high temperature resistant, thermal stability are good, thermal conductivity is low, specific heat is small and mechanical resistant vibration, by alkali-free glass fibre
Dimension, ceramic fibre and the compound composition three-dimensional network space of carbon fiber simultaneously carry out water jet process, and high-pressure water jet punctures fibre web, make fibre
A part of surface fibre in net is subjected to displacement, after water jet penetrates fibre web, by the rebound of lace curtaining, again from different directions
It is interspersed and tangle fibre web, in fibre web fiber under the hydraulic action that different directions high-speed water jet interts, generate displacement, it is interspersed,
Entanglement and obvolvent, so that fibre web be made to be reinforced；The low temperature sheathing paper thermal insulation of materials performance and good flame resistance of preparation, thermal contact resistance
Greatly, the small profiling of abandonment rate is good under vacuum, dustless, nontoxic, long service life, and stability is good.
Specific embodiment
Average diameter is 0.2~0.5 μm of alkali-free glass fibre, ceramic fibre and carbon by mass ratio 1: 0.5: 0.2: 10
Fiber carries out mashing dispersion in the sulfuric acid solution that mass fraction is 20%, obtains mixed slurry, and the mass concentration for controlling slurry is
1~3%, beating degree is 50~70 ° of SR, and acidity pH is 2~4；It is 0.2~0.3% that mixed slurry, which is diluted to mass concentration, is removed
Then filter residue carries out wet forming with paper machine, obtains l Water Paper, to l Water Paper using 4 spun lacings process, hydraulic pressure of prewetting be 1.5~
3bar, second to the 4th main spun lacing pressure is respectively 15~35bar, and 70~80bar, 40~50bar obtain spun lacing l Water Paper；
Roll compacting dehydration is carried out to spun lacing l Water Paper using double-roll rolling mill, the pressure between two rolls is 1.8~3.2MPa/cm2, pick-up 70
~90%, dehydration paper is obtained, l Water Paper is dried in baking oven to constant weight, Cryo Heat Insulation paper material is obtained；The drying is done in three stages
Dry, the temperature of first stage is 160~180 DEG C, keeps the temperature 1~2h；The temperature of second stage is 140~160 DEG C, keeps the temperature 2~3h；
The temperature of phase III is 120~150 DEG C, dry to constant weight.
Example 1
Average diameter is 0.2 μm of alkali-free glass fibre, ceramic fibre and carbon fiber in matter by mass ratio 1: 0.5: 0.2: 10
The mass concentration for carrying out mashing dispersion in the sulfuric acid solution that amount score is 20%, obtaining mixed slurry, and control slurry is 1%, mashing
Degree is 50 ° of SR, and acidity pH is 2；It is 0.2% that mixed slurry, which is diluted to mass concentration, removes filter residue, is then carried out with paper machine
Wet forming obtains l Water Paper, is processed to l Water Paper using 4 spun lacings, hydraulic pressure of prewetting is 1.5bar, second to the 4th main spun lacing
Pressure is respectively 15bar, 70bar, 40bar, obtains spun lacing l Water Paper；Using double-roll rolling mill to spun lacing l Water Paper carry out roll compacting dehydration, two
Pressure between roll is 1.8MPa/cm2, pick-up 70% obtains dehydration paper, and l Water Paper is dry to constant weight in baking oven, obtain low temperature
It is insulated paper material；The drying is dried in three stages, and the temperature of first stage is 160 DEG C, keeps the temperature 1h；The temperature of second stage
It is 140 DEG C, keeps the temperature 2h；The temperature of phase III is 120 DEG C, dry to constant weight.
Example 2
Average diameter is 0.35 μm of alkali-free glass fibre, ceramic fibre and carbon fiber in matter by mass ratio 1: 0.5: 0.2: 10
The mass concentration for carrying out mashing dispersion in the sulfuric acid solution that amount score is 20%, obtaining mixed slurry, and control slurry is 2%, mashing
Degree is 60 ° of SR, and acidity pH is 3；It is 0.25% that mixed slurry, which is diluted to mass concentration, removes filter residue, is then carried out with paper machine
Wet forming obtains l Water Paper, is processed to l Water Paper using 4 spun lacings, hydraulic pressure of prewetting is 2.2bar, second to the 4th main spun lacing
Pressure is respectively 25bar, 75bar, 45bar, obtains spun lacing l Water Paper；Using double-roll rolling mill to spun lacing l Water Paper carry out roll compacting dehydration, two
Pressure between roll is 2.5MPa/cm2, pick-up 80% obtains dehydration paper, and l Water Paper is dry to constant weight in baking oven, obtain low temperature
It is insulated paper material；The drying is dried in three stages, and the temperature of first stage is 170 DEG C, keeps the temperature 1.5h；The temperature of second stage
Degree is 150 DEG C, keeps the temperature 2.5h；The temperature of phase III is 135 DEG C, dry to constant weight.
Example 3
Average diameter is 0.5 μm of alkali-free glass fibre, ceramic fibre and carbon fiber in matter by mass ratio 1: 0.5: 0.2: 10
The mass concentration for carrying out mashing dispersion in the sulfuric acid solution that amount score is 20%, obtaining mixed slurry, and control slurry is 3%, mashing
Degree is 70 ° of SR, and acidity pH is 4；It is 0.3% that mixed slurry, which is diluted to mass concentration, removes filter residue, is then carried out with paper machine
Wet forming obtains l Water Paper, is processed to l Water Paper using 4 spun lacings, hydraulic pressure of prewetting is 3bar, second to the 4th main spun lacing pressure
Power is respectively 35bar, 80bar, 50bar, obtains spun lacing l Water Paper；Roll compacting dehydration is carried out to spun lacing l Water Paper using double-roll rolling mill, two roll
Pressure between roller is 3.2MPa/cm2, pick-up 90% obtains dehydration paper, and l Water Paper is dry to constant weight in baking oven, it is exhausted to obtain low temperature
Hot paper material；The drying is dried in three stages, and the temperature of first stage is 180 DEG C, keeps the temperature 2h；The temperature of second stage is
160 DEG C, keep the temperature 3h；The temperature of phase III is 150 DEG C, dry to constant weight.
The conventional insulation material that Cryo Heat Insulation paper material prepared by the present invention and Shandong company produce is detected, is had
Body testing result such as following table table 1：
Detection method：
It is thermally conductive by the measurement of intelligent double flat plate thermal conductivity measuring apparatus that Cryo Heat Insulation paper material is prepared in above embodiments
The physical properties of coefficient, paper detect according to concerned countries standard《Cryogenic vacuum reflective insulant standard schedule》Side
Method carries out.
1 low-temperature thermal insulation paper material property of table characterization
Cryo Heat Insulation paper material prepared by the present invention as shown in Table 1, thermal coefficient is low, and high temperature resistant is good, and excellent heat stability has
Wide market value and application prospect.
Claims (6)
1. a kind of preparation method of low-temperature thermal insulation paper, it is characterised in that the specific steps are：
（1）It in mass fraction is 20% by alkali-free glass fibre, ceramic fibre and carbon fiber that average diameter is 0.2~0.5 μm
Mashing dispersion is carried out in sulfuric acid solution, obtains mixed slurry；
（2）It is 0.2~0.3% that mixed slurry, which is diluted to mass concentration, removes filter residue, then carries out wet forming with paper machine,
L Water Paper is obtained, l Water Paper is processed using 4 spun lacings, obtains spun lacing l Water Paper；Roll compacting dehydration is carried out to spun lacing l Water Paper using double-roll rolling mill,
It must be dehydrated paper, l Water Paper is dried in baking oven to constant weight, Cryo Heat Insulation paper material is obtained.
2. a kind of preparation method of low-temperature thermal insulation paper according to claim 1, it is characterised in that：Step（1）The nothing
The sulfuric acid solution in mass ratio 1: 0.5: 0.2: 10 that alkali containing glass fibre, ceramic fibre and carbon fiber and mass fraction are 20% mixes.
3. a kind of preparation method of low-temperature thermal insulation paper according to claim 1, it is characterised in that：Step（1）Described beats
Slurry dispersion condition is that the mass concentration of control slurry is 1~3%, and beating degree is 50~70 ° of SR, and acidity is pH2~4.
4. a kind of preparation method of low-temperature thermal insulation paper according to claim 1, it is characterised in that：Step（2）The water
Thorn processing conditions is 1.5~3bar for hydraulic pressure of prewetting, and second to the 4th main spun lacing pressure is respectively 15~35bar, 70~
80bar, 40~50bar.
5. a kind of preparation method of low-temperature thermal insulation paper according to claim 1, it is characterised in that：Step（2）Described rolls
Press-dehydrating conditional coefficient is that the pressure between two rolls is 1.8~3.2MPa/cm2, pick-up is 70~90%.
6. a kind of preparation method of low-temperature thermal insulation paper according to claim 1, it is characterised in that：Step（2）Described is dry
Dry to dry in three stages, the temperature of first stage is 160~180 DEG C, keeps the temperature 1~2h；The temperature of second stage is 140~160
DEG C, keep the temperature 2~3h；The temperature of phase III is 120~150 DEG C, dry to constant weight.
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| CN201810825820.2A CN108914703A (en) | 2018-07-25 | 2018-07-25 | A kind of preparation method of low-temperature thermal insulation paper |
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| CN201810825820.2A CN108914703A (en) | 2018-07-25 | 2018-07-25 | A kind of preparation method of low-temperature thermal insulation paper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115233375A (en) * | 2022-08-25 | 2022-10-25 | 淄博雨程节能环保科技有限公司 | Fiber needled blanket and preparation method thereof |
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|---|---|---|---|---|
| CN107201687A (en) * | 2016-03-16 | 2017-09-26 | 北京化工大学 | The preparation method of aerogel heat-proof paper |
| CN107313289A (en) * | 2017-06-28 | 2017-11-03 | 浙江贝来新材料有限公司 | Hydrophobicity thermal insulating paper and preparation method thereof |
| CN107354818A (en) * | 2017-08-02 | 2017-11-17 | 合肥帧讯低温科技有限公司 | Preparation process of heat insulation paper for low-temperature storage tank |
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2018
- 2018-07-25 CN CN201810825820.2A patent/CN108914703A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107201687A (en) * | 2016-03-16 | 2017-09-26 | 北京化工大学 | The preparation method of aerogel heat-proof paper |
| CN107313289A (en) * | 2017-06-28 | 2017-11-03 | 浙江贝来新材料有限公司 | Hydrophobicity thermal insulating paper and preparation method thereof |
| CN107354818A (en) * | 2017-08-02 | 2017-11-17 | 合肥帧讯低温科技有限公司 | Preparation process of heat insulation paper for low-temperature storage tank |
Non-Patent Citations (1)
| Title |
|---|
| 曲通馨等: "《绝热材料与绝热工程实用手册》", 31 August 1998 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115233375A (en) * | 2022-08-25 | 2022-10-25 | 淄博雨程节能环保科技有限公司 | Fiber needled blanket and preparation method thereof |
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Application publication date: 20181130 |