CN105133298B - Inorganic fire retardant paper and preparation method and application thereof - Google Patents
Inorganic fire retardant paper and preparation method and application thereof Download PDFInfo
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- CN105133298B CN105133298B CN201510646145.3A CN201510646145A CN105133298B CN 105133298 B CN105133298 B CN 105133298B CN 201510646145 A CN201510646145 A CN 201510646145A CN 105133298 B CN105133298 B CN 105133298B
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Abstract
The invention discloses a preparation method of inorganic fire retardant paper. The method comprises the following steps that 1, a silicate glass precursor spinning colloidal sol is synthetized through the sol-gel technology; 2, the silicate glass precursor spinning colloidal sol synthetized in the first step serves as a spinning solution, and a silicate glass nano-fiber non-woven film is prepared through the electrospinning technology; 3, the silicate glass nano-fiber non-woven film obtained in the second step is soaked in an inorganic filler solution, taken out, drained off and dried in air at the room temperature, and then the silicate glass nano-fiber non-woven film is rolled and compacted through a roller mill and transferred into a drying oven to be baked to obtain the inorganic fire retardant paper. According to the preparation method, raw materials are common and cheap, the manufacturing process is simple, efficient, safe, environmentally friendly and capable of saving energy and easily achieving large-scale production, and the obtained inorganic fire retardant paper has the better mechanical performance and the better chemical stability compared with common paper materials.
Description
Technical field
The present invention relates to resistance to combustion paper and its preparation field, more particularly to a kind of inorganic resistance to combustion paper and preparation method thereof, application.
Background technology
Paper is the very important role of performer in our daily lifes.Paper can be used to write, draw a picture, prints, and play the part of
The role for record and transmission information；Paper is used for manufacturing banknote by overwhelming majority of countries in the world, carries appointing for money flow
Business；Additionally, paper material is also widely used in the fields such as packaging, interior decoration and environmental protection, some speciality papers are due to unique warm
The performances such as, mechanics, electricity, magnetics also have some other specific uses.Its main component of traditional paper material is organic
Cellulose, therefore yellowing phenomenon is susceptible to, and meet fiery easily burning.In history many precious documents and materials are therefore all difficult
Intactly to preserve so far.Used as currency paper, traditional paper material there is also same easy combustion problem.It may be said that fire is
The jinx of traditional paper material.On the other hand, traditional paper technology technique is complicated, and easily environment made in process of production
Into serious pollution.The main source of paper making raw material paper pulp is string, every year because the deforestation area that papermaking is caused accounts for the whole world
More than the 40% of Deforestation area, to global environment and weather destruction difficult to the appraisal is caused.And according to British government
Authority's report points out that it is to resist one of most effective also most cheap mode of climate change to stop deforestation.
In order to overcome paper material to hold incendive shortcoming, exploitation substitutes the manufacturing technology of traditional paper material to alleviate environment
Pressure, some researchers attempt making the paper material of resistance to combustion of inorganic material.Such as drawn using collosol and gel or melt
Glass or ceramic fibre prepared by silk is main material, and by applying inorganic binder and filler the inorganic paper of resistance to combustion is manufactured.
This paper has good resistance to combustion characteristic, but because the glass or ceramic fibre diameter of conventional art preparation are thicker, fiber is soft
Toughness is not high, causes the paper material for preparing to there is also the shortcoming of pliability difference.This kind of inorganic resistance to combustion paper is adapted as building
Finishing material, fire proofing material etc. are used, apply writing, paint, banknote manufacture, the aspect such as packaging it is obvious improper.It is another kind of
Method is, with calcium carbonate superfine powder as paper primary raw material, class to be passed through after mixing with a certain proportion of resin and other fillers
Inorganic-organic hybrid paper material, that is, " stone that several years ago at home reputation is made an uproar greatly are manufactured like the manufacturing process of plastic sheeting
Paper ".This paper has resistance to combustion characteristic to a certain extent, but its organic resin constituent limits the raising of its resistance to combustion temperature, and
And it is also an extremely controversial topic that whether its organic resin constituent can degrade in natural environment.Recently, researcher carries
Method of the ceramic nanofibers synthesized using chemical method to prepare inorganic resistance to combustion paper is gone out.This method is with calcium oleate as forerunner
Body, by hydro-thermal reaction the hydroxyapatite overlong nanowire of controlled diameter is prepared, and in this, as the structure of new type of paper
Material, using vacuum filtration technology, prepares the hydroxyapatite paper of resistance to combustion.Although the paper of resistance to combustion prepared by this technology has well
Resistance to elevated temperatures and preferable pliability and mechanical strength, but the preparation efficiency of technology itself is low, from the industrial metaplasia of realization
Produce and also have larger distance.
The content of the invention
In order to overcome the disadvantages mentioned above and deficiency of prior art, an object of the present invention is to provide a kind of inorganic resistance to combustion
The preparation method of paper, preparation efficiency is high, and raw material is common and cheap, and manufacture process is simple, efficient, safe and environment-friendly, energy-conservation, easily
Accomplish scale production.
The second object of the present invention is to provide a kind of inorganic paper of resistance to combustion, strong with good pliability and very high mechanics
Degree and chemical stability.
The third object of the present invention is to provide the application of above-mentioned inorganic resistance to combustion paper.
The purpose of the present invention is achieved through the following technical solutions：
A kind of preparation method of inorganic resistance to combustion paper, comprises the following steps：
(1) by sol-gel technique synthetic silicate glass precursor spinning colloidal sols；
(2) the silicate glass precursor spinning colloidal sols with step (1) synthesis are prepared as spinning solution by electrostatic spinning technique
Silicate glass nano fiber non-woven film；
(3) the silicate glass nano fiber non-woven film for obtaining step (2) is immersed in inorganic fill agent solution, is taken out
And drain, subsequently dry under room temperature in atmosphere, then be compacted with roller machine rolling, it is transferred in baking oven and toasts, obtain inorganic resistance to
Combustion paper；
The inorganic fill agent solution is ethanol solution, the ethanol solution of tetraethyl orthosilicate, the aluminium isopropoxide of butyl titanate
One or more of ethanol solution, the ethanol solution of zirconium nitrate, the aqueous solution of calcium nitrate.
Step (1) is described to pass through sol-gel technique synthetic silicate glass precursor spinning colloidal sols, specially：
By tetraethyl orthosilicate, absolute ethyl alcohol, water and concentration for 30wt% HCl solution with mass ratio 10:(8.7～
43.6):(1.1～3.2):(0.04～0.25) is well mixed, and is then obtained before silicate glass by adding pyrohydrolysis and ageing
Drive spinning colloidal sols.
Step (2) the silicate glass precursor spinning colloidal sols with step (1) synthesis as spinning solution, by electrostatic spinning
Technology prepares silicate glass nano fiber non-woven film, specially：
The sealing of silicate glass precursor spinning colloidal sols is connected with one end in the glass of metal needle or plastic containers,
Colloidal sol is released from container by metal needle by syringe pump, wherein liquid supply speed is 0.1～3mL/h, while to metal needle
Applying the high-magnitude DC electrostatic field of 5～20kV carries out electrostatic spinning, and the fiber rotating speed for obtaining is the metal of 1000～3000rpm
Cylinder is collected, and by the length of acquisition time the thickness of silicate glass nano fiber non-woven film is regulated and controled.
It is molten that step (3) the silicate glass nano fiber non-woven film for obtaining step (2) is immersed in inorganic filler
In liquid, take out and drain, subsequently dry under room temperature in atmosphere, be then transferred to be toasted in baking oven, specially：
Butyl titanate is added in ethanol, is well mixed, control the volume ratio of butyl titanate and etoh solvent 1:0.5
To 1:Between 5, inorganic fill agent solution is obtained；Then silicate glass nano fiber non-woven film is immersed into inorganic fill agent solution
In, immersion is taken out and is drained after 3～10 minutes, is subsequently dried under room temperature in atmosphere, is then transferred in baking oven in 100～200
DEG C baking 1～3 hour.
By silicate glass nano fiber non-woven film and it is filled in the glassy silicate of silicate glass nano fiber non-woven film
Inorganic filler between glass nanofiber is constituted；
The inorganic filler is SiO2、Al2O3、CaO、ZrO2、TiO2One or more of.
The principal component of the silicate glass nanofiber is SiO2, also comprising Al2O3、CaO、ZrO2、TiO2In one kind
More than.
Described inorganic resistance to combustion paper is for printing, writing, painting, banknote prints and the papery finishing of building.
Compared with prior art, the present invention has advantages below and beneficial effect：
(1) present invention combines sol-gel technique and electrostatic spinning technique, and prepared by batch has good flexible silicic acid
Salt glass nano-fibre nonwoven film is logical soak-be dried-to be compacted-be thermally treated resulting in good pliability and very high mechanics
The paper of resistance to combustion of intensity, raw material is common and cheap, and manufacture process is simple, efficient, safe and environment-friendly, energy-conservation, easily realizes scale metaplasia
Produce, alleviate traditional paper-making industry and consume paper pulp in a large number and the environmental pressure that causes of falling trees.
(2) the inorganic paper of resistance to combustion prepared by the present invention, fibrous matrix is closely knit, and surface is smooth, fibre diameter be in nanoscale,
Therefore the paper of resistance to combustion for finally giving has more preferable mechanical property than common paper material.
(3) the inorganic paper of resistance to combustion prepared by the present invention, main composition is inorganic silicate glass nano-fibre, hardly
Containing any organic principle, therefore chance fire will not burn, even if any shape will not also occur at a high temperature of higher than 800 degrees Celsius
Become, additionally, it is this it is resistance to combustion paper also have good chemical stability, humidity, resistance to chemical attack, non-yellowing, nondiscolouring, therefore
Inorganic resistance to combustion paper disclosed by the invention has practical application widely, can be used to substitute or part substitutes traditional prints, book
Write, paint and banknote printing, replacement is traditionally used for the papery finishing material of building.
Description of the drawings
Fig. 1 is SiO prepared by the electrostatic spinning of embodiments of the invention 12Glass nano-fibre stereoscan photograph.
Fig. 2 is the stereoscan photograph of the inorganic resistance to combustion paper of embodiments of the invention 1.
Fig. 3 is the mechanical experimental results of embodiments of the invention 1.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, but embodiments of the present invention not limited to this.
Embodiment 1
The present embodiment is with SiO2Nanofiber prepared by colloidal sol electrostatic spinning is used as inorganic resistance to combustion paper material of main part, TiO2Make
For paper filler, by embodiment, the invention will be further described, but should not limit the protection domain of this patent with this, its
His all unorganic glass forerunner colloidal sols that can be used to spinning and can be by follow-up immersion-be dried-compacting-heat treatment to silicic acid
The material such as SiO that salt electricity spinning fibre nonwoven film is filled2、CaO、Al2O3、ZrO2Deng and its mixture be suitable for this
The bright disclosed inorganic paper of resistance to combustion.
The preparation process of the inorganic resistance to combustion paper of the present embodiment is as follows：
Step 1. is with tetraethyl orthosilicate (TEOS), absolute ethyl alcohol (EtOH), water (H2O), acid is (including hydrochloric acid (HCl), nitric acid
(HNO3), sulfuric acid (H2SO4), acetic acid) be raw material, SiO is synthesized by sol-gel technique2Can spinning colloidal sols.In the present embodiment
In, with SiO2Colloidal sol is prepared as example.Acid used is hydrochloric acid (HCl), and its concentration is 30wt%.By TEOS, EtOH, water and
HCl is with volume ratio 10:10:1:0.03 (can also be 10：10：1.5:0.03 or 10:10:2:0.03 or 10:10:1:0.02 or
10:10:1:0.04 or 10:10:1.5:0.02 or 10:10:1.5:0.03 or 10:10:1.5:0.04 or 10:10:2:0.02 or
10:10:2:0.04) it is well mixed, then obtains spinnable SiO by adding pyrohydrolysis and ageing2Precursor spinning colloidal sols.Plus hot water
The representative temperature of solution is 70 DEG C, and typical time period is 3 hours；Ageing representative temperature is 40 DEG C, and the time is 5 hours.
The SiO that step 2. is synthesized with above-mentioned steps 12Precursor spinning colloidal sols are spinning solution, are prepared by electrostatic spinning technique
SiO2Glass nano-fibre nonwoven film.It is fine electrospun nanofibre to be collected during electrostatic spinning using the motorized pulleys of rotation at a high speed
Dimension, by the fiber spin-off cylinder of collection the good silicate glass nano fiber non-woven film of pliability is obtained.The mistake of electrostatic spinning
Journey is as follows：The sealing of silicate glass precursor spinning colloidal sols is connected with one end in the glass of metal needle or plastic containers,
Colloidal sol is released from container by metal needle by syringe pump, wherein liquid supply speed is 2mL/h, while applying to metal needle
The high-magnitude DC electrostatic field of 10kV carries out electrostatic spinning, and the fiber rotating speed for obtaining is that the metal roller of 2000rpm is collected, and is passed through
The length of acquisition time regulates and controls the thickness of silicate glass nano fiber non-woven film.
SiO manufactured in the present embodiment2The stereoscan photograph of glass nano-fibre nonwoven film is as shown in Figure 1.
Step 3.TiO2Filling and densification process.First, the TiO of the inorganic resistance to combustion paper of the present invention is prepared2Filling forerunner
Liquid solution：Butyl titanate is added in ethanol, is well mixed, the volume ratio for controlling butyl titanate and etoh solvent is 1:0.5
(1 can also be taken:0.5 to 1:Other values between 5).The concentration of butyl titanate affects single immersion to be filled into SiO2Electrospun is fine
Amount in dimension nonwoven film.Then by SiO2Electricity spinning fibre film immerses above-mentioned solution, and immersion is taken out and drained after 3 minutes, with
Dry under room temperature in atmosphere afterwards, be then transferred in baking oven be toasted 3 hours in 100 DEG C.If the concentration of butyl titanate ethanol solution
Relatively low, single immersion-be dried-heat treatment may be unable to reach preferable effect, now some times of repeatable said process, until
Reach preferable effect.In the present embodiment, the inorganic resistance to combustion paper is referred to as into the ST paper of resistance to combustion, its stereoscan photograph such as Fig. 2 institutes
Show.
The test result of the present embodiment is as follows：
It is disclosed by the invention it is inorganic it is resistance to combustion paper mainly by diameter nanoscale inorganic silicate glass nano-fibre structure
Into.This resistance to combustion paper had both had good pliability and mechanical strength, there is fabulous chemical stability and heat endurance again.By scheming
1 and Fig. 2 can be seen silicate glass nanofiber diameter in the space major part after 300nm or so, filling process between fiber
By TiO2Filled；The elastic modelling quantity of this resistance to combustion paper of Jing tests is 67.29MPa, and tearing strength is 12.24N, corresponding strain
For 2.21% (paper sheet thickness for test is 0.3mm, and width is 2cm) (see Fig. 3 and Biao 1)；Using ceramic ink this
There is no significantly deformation and change colour in the long-time calcination under alcolhol burner after writing on the paper of resistance to combustion, paper, the figure of pattern and
Color also can completely keep the state before calcination, and burning deformation at once, blackening after the quiet alcolhol burner calcination of common A4 printing papers.
The mechanical experimental results of the present embodiment of table 1
This resistance to combustion paper manufacture raw material is common and cheap, and manufacture process is simple, efficient, safe and environment-friendly, energy-conservation, easily real
Existing large-scale production.The capital equipment (electrostatic spinning machine) of needs is also very simple, easily operated, and price is relatively low, on the market
The electrostatic spinning machine for being used for industrialized production is sold.So this resistance to combustion paper has completely the feasible of industrialized mass production
Property.Additionally, the production of this resistance to combustion paper as tradition paper-making industry completely without falling trees in a large number, therefore this paper shell is replaced
Generation or part substitute traditional paper material and play a part of environmental protection indirectly.
Due to its remarkable performance, resistance to combustion paper disclosed by the invention has huge diving in many aspects such as printing, buildings
In using value：
Using 1：Substitute or part substitutes traditional prints, writes and drawing paper.Printing, the book of conventional papermaking technique manufacture
Write and drawing paper, main body is organic material, meet fire easily burning.It may be said that fire is the jinx of traditionally on paper material.Additionally, passing
The printing of system, write and drawing paper poor chemical stability, as the prolongation of resting period can occur the phenomenons such as flavescence embrittlement.This
A little long-term preservations for being all unfavorable for the rare cultural relics such as important literature and famous painting.The resistance to combustion paper of inorfil that the present invention is announced not only has
There are traditional prints, write and drawing paper generally uses characteristic, and with remarkable resistance to elevated temperatures, even if undergoing 800
High temperature more than degree Celsius will not also burn and deform, and not affect its performance.Using inorganic ink (such as commercial pottery
Porcelain marking ink) as the pigment for printing, writing and paint, even across higher than 800 celsius temperature calcinations, in inorganic resistance to combustion
Font and pattern on paper also will not change colour.Therefore, the inorganic resistance to combustion paper announced using the present invention is used as printing, write and paint
Be conducive to the long-term preservation of important literature, archives, data, precious art drawing etc. with paper.
Using 2：As banknote printing.As banknote printing, coordinate inorganic ink, it is disclosed by the invention inorganic
The banknote of the resistance to combustion paper manufacture of nanofiber is set fire, waterproof, anti-chemical medicine, easily long-term to preserve.Additionally, nothing disclosed by the invention
The resistance to combustion paper of machine is not easy counterfeit, can prevent counterfeit money from circulating on the market to a certain extent.
Using 3：Replacement is traditionally used for the papery finishing material of building.Fire protecting performance is to weigh building safety performance
Important indicator.Paper material (such as wallpaper) is in modern building fitting-up using more and more extensive, traditional organic papery
Material is met fire and easily burns and give off poisonous gas so that the hidden danger that building occurs fire is greatly increased.Additionally, tradition is organic
Paper material poor chemical stability, as the prolongation of use time is susceptible to aging phenomenon, generally uses the life-span shorter.This
Bright disclosed inorganic resistance to combustion paper has highly stable chemical property, and with outstanding resistance to elevated temperatures, even if Celsius 800
Also will not burn deformation at a high temperature of degree, will not more release any toxic gas.Additionally, this inorganic resistance to combustion paper also has very well
Moisture-proof function, even if make moist for a long time also will not occur it is mouldy discoloration etc. phenomenon.It is resistance to inorganic nano-fiber disclosed by the invention
Combustion paper substitutes traditional building papery finishing material, can greatly prolong the service life of papery finishing material, and significantly
Improve the performance such as the insulation of building, fire prevention, waterproof, mothproof.
Embodiment 2-25
Silicate Electrospun nano-fibers according to the present invention, its composition is with SiO2For main body, can also add Al2O3、ZrO2
Improve the performances such as mechanics, the calorifics of fiber Deng composition.It is illustrated below by embodiment 2-25.The main spy of embodiment 2-25
It is the mol ratio that have adjusted each addition raw material in spinning colloidal sols to levy, as shown in table 2：
Each raw material mass mixture ratio in the spinning colloidal sols of embodiment 2-25 of table 2
Operating procedure is as follows：
Step 1. is with tetraethyl orthosilicate (TEOS), five water aluminum nitrate (Al (NO3)3·5H2O), five water zirconium nitrate (Zr
(NO3)2·5H2O), absolute ethyl alcohol (EtOH), water (H2O), hydrochloric acid (HCl), for raw material, can be spun by sol-gel technique synthesis
Silk colloidal sol.Proportioning of the above-mentioned raw materials as listed by table 1 is well mixed, and then obtains spinnable silicate by adding pyrohydrolysis and ageing
Precursor spinning colloidal sols.Plus the temperature of pyrohydrolysis is 90 DEG C, the time is 2 hours；Aging Temperature is 40 DEG C, and the time is 8 hours.
The colloidal sol that step 2. is synthesized with above-mentioned steps 1 prepares silicate glass and receives as spinning solution by electrostatic spinning technique
Rice fiber membrane.Motorized pulleys during electrostatic spinning using rotation at a high speed collect Electrospun nano-fibers, the fibre that will be collected
Dimension peels off cylinder and obtains the good silicate glass nano-fiber film of pliability.The process of electrostatic spinning is as follows：Colloidal sol is filled
Enter liquid feed device, connect high-voltage DC power supply, the continuous silicate glass nanofiber of overlength is prepared by electrostatic spinning.
Step 3.TiO2The filling of filler：First, the TiO of the inorganic resistance to combustion paper of the present invention is prepared2Filling presoma is molten
Liquid：Butyl titanate is added in ethanol, is well mixed, the volume ratio for controlling butyl titanate and etoh solvent is 1:5.Then will
SiO2Electricity spinning fibre film immerses above-mentioned solution, and immersion is taken out and drained, subsequently dries under room temperature in atmosphere after 10 minutes,
It is then transferred in baking oven be toasted 1 hour in 200 DEG C.
The test result of embodiment 2-25, by adding Al2O3And ZrO2The mechanical behavior under high temperature of fiber can be improved, favorably
In the heat-resisting ability for improving inorganic resistance to combustion paper.By the Al for adding 5wt%2O3, (testing time short time of this resistance to combustion paper
For 10min) high temperature resistant reaches more than 980 DEG C；By the ZrO for adding 5wt% or so2, the short time of this resistance to combustion paper is (during test
Between be 10min) high temperature resistant reaches more than 1150 DEG C.
Other performances of product prepared by embodiment 2-25 are similar to Example 1, will not be described here.
In addition to the implementation, inorganic filler of the invention can also be SiO2、Al2O3、CaO、ZrO2In one kind with
On, when filler is SiO2When, the filling agent solution for being used is the ethanol solution of tetraethyl orthosilicate；When filler is Al2O3
When, the filling agent solution for being used is the ethanol solution of aluminium isopropoxide；When filler is ZrO2When, the filling agent solution for being used
For the ethanol solution of zirconium nitrate, when filler is CaO, the filling agent solution for being used is the aqueous solution of calcium nitrate.
The principal component of the silicate glass nanofiber of the present invention is SiO2, can also include Al2O3、CaO、ZrO2、TiO2In
More than one.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention not by the embodiment
Limit；Other any Spirit Essences without departing from the present invention and the change, modification, replacement made under principle, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (7)
1. it is a kind of it is inorganic it is resistance to combustion paper preparation method, it is characterised in that comprise the following steps：
(1) by sol-gel technique synthetic silicate glass precursor spinning colloidal sols；
(2) the silicate glass precursor spinning colloidal sols with step (1) synthesis prepare silicic acid as spinning solution by electrostatic spinning technique
Salt glass nano-fibre nonwoven film；
(3) the silicate glass nano fiber non-woven film for obtaining step (2) is immersed in inorganic fill agent solution, is taken out and is dripped
It is dry, subsequently dry under room temperature in atmosphere, then be compacted with roller machine rolling, it is transferred in baking oven and toasts, obtain the inorganic paper of resistance to combustion；
The inorganic fill agent solution is ethanol solution, the ethanol solution of tetraethyl orthosilicate, the second of aluminium isopropoxide of butyl titanate
One or more of alcoholic solution, the ethanol solution of zirconium nitrate, aqueous solution of calcium nitrate.
2. the preparation method of inorganic resistance to combustion paper according to claim 1, it is characterised in that step (1) is described to pass through colloidal sol
Gel technique synthetic silicate glass precursor spinning colloidal sols, specially：
By tetraethyl orthosilicate, absolute ethyl alcohol, water and concentration for 30wt% HCl solution with mass ratio 10:(8.7～43.6):
(1.1～3.2):(0.04～0.25) is well mixed, and then obtains silicate glass precursor spinning by adding pyrohydrolysis and ageing
Colloidal sol.
3. the preparation method of inorganic resistance to combustion paper according to claim 1, it is characterised in that step (2) is described with step (1)
The silicate glass precursor spinning colloidal sols of synthesis be spinning solution, by electrostatic spinning technique prepare silicate glass nanofiber without
Film is spun, specially：
The sealing of silicate glass precursor spinning colloidal sols is connected with one end in the glass of metal needle or plastic containers, by noting
Penetrate pump to be released colloidal sol by metal needle from container, wherein liquid supply speed is 0.1～3mL/h, while applying 5 to metal needle
The high-magnitude DC electrostatic field of～20kV carries out electrostatic spinning, and the fiber rotating speed for obtaining is the metal roller of 1000～3000rpm
Collect, the thickness of silicate glass nano fiber non-woven film is regulated and controled by the length of acquisition time.
4. it is according to claim 1 it is inorganic it is resistance to combustion paper preparation method, it is characterised in that step (3) is described by step (2)
The silicate glass nano fiber non-woven film for obtaining is immersed in inorganic fill agent solution, is taken out and is drained, then is rolled with roller machine
Pressure compacting, subsequently dries in atmosphere under room temperature, is then transferred to be toasted in baking oven, specially：
Butyl titanate is added in ethanol, is well mixed, control the volume ratio of butyl titanate and etoh solvent 1:0.5 to 1:
Between 5, inorganic fill agent solution is obtained；Then silicate glass nano fiber non-woven film is immersed in inorganic fill agent solution,
Immersion is taken out and is drained after 3～10 minutes, then is compacted with roller machine rolling, is subsequently dried under room temperature in atmosphere, is then transferred to
Toast 1～3 hour in 100～200 DEG C in baking oven.
5. a kind of inorganic paper of resistance to combustion, it is characterised in that by silicate glass nano fiber non-woven film and be filled in silicate glass
Inorganic filler between the silicate glass nanofiber of nano fiber non-woven film is constituted；
The inorganic filler is SiO2、Al2O3、CaO、ZrO2、TiO2One or more of.
6. the inorganic paper of resistance to combustion according to claim 5, it is characterised in that the principal component of the silicate glass nanofiber
For SiO2, also comprising Al2O3、CaO、ZrO2、TiO2One or more of.
7. described in claim 5 it is inorganic resistance to combustion paper be used for print, write, painting, banknote printing and building papery finishing.
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| US20190255223A1 (en) * | 2018-02-16 | 2019-08-22 | American Nano, LLC | Silica fiber compositions and methods of use |
| US11135806B2 (en) | 2018-02-16 | 2021-10-05 | American Nano Llc. | Compositions incorporating silica fibers |
| EP3765662A4 (en) * | 2018-03-16 | 2022-04-06 | American Nano, Llc | Compositions incorporating silica fibers |
| CN109338483B (en) * | 2018-09-30 | 2020-12-29 | 西安工程大学 | Preparation method of self-supporting nano-fiber ultra-high temperature filter membrane material |
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| CN104324720A (en) * | 2014-10-15 | 2015-02-04 | 华南理工大学 | Water purification film and preparation method thereof |
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