CN107880903A - A kind of nanometer barium hydroxide/hexagonal nanometer boron nitride composite and preparation method - Google Patents
A kind of nanometer barium hydroxide/hexagonal nanometer boron nitride composite and preparation method Download PDFInfo
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- CN107880903A CN107880903A CN201710871660.0A CN201710871660A CN107880903A CN 107880903 A CN107880903 A CN 107880903A CN 201710871660 A CN201710871660 A CN 201710871660A CN 107880903 A CN107880903 A CN 107880903A
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Abstract
The present invention relates to a kind of nanometer barium hydroxide/hexagonal nanometer boron nitride composite and preparation method, wherein the mass percent of hexagonal boron nitride is 10% 15%, and remaining is barium hydroxide.By barium hydroxide octahydrate and oxidation hexagonal boron nitride powder, heating stirring obtains a nanometer barium hydroxide/hexagonal nanometer boron nitride composite in isopropanol, and method can simply accomplish largely to produce.Secondly, due to the addition of hexagonal boron nitride, compared with existing barium hydroxide, nanometer barium hydroxide particulate load is on hexagonal boron nitride lamella in the barium hydroxide/hexagonal nanometer boron nitride composite, after absorption air becomes barium carbonate, barium carbonate particle is due to a length of big crystal grain barium carbonate that is formed by connecting of hexagonal boron nitride piece, on the one hand the gap between historical relic can be connected so as to reinforce historical relic, on the other hand because the excellent heat endurance of hexagonal boron nitride can make historical relic that there is fire protecting performance not to be destroyed in unexpected fire so as to historical relic.
Description
Technical field
The invention belongs to field of material preparation, be related to a kind of nanometer barium hydroxide/hexagonal nanometer boron nitride composite and
Preparation method.
Background technology
Barium hydroxide is basic chemical industry raw material, and purposes is quite varied.At present, manufacturing barium salt using barium hydroxide, having
Machine barium compound etc. development is more rapid.In addition, the preparation for refined the animals and plants oils, sucrose that people often eat usually
It is also required to use barium hydroxide (CN201310240980.8, China).In addition, barium hydroxide can be additionally used in quantitative measurment two
Carbonoxide, the content and insecticide of chlorophyll, the production of rubber.Different from other most of alkali, barium hydroxide is soluble in water
Highly basic, this property can make it be used for the depickling of historical relic.With the development of chemical industry, the new application of barium hydroxide by
Gradually expanded.
Absorbing carbon dioxide, can be with reinforced wall using this principle so as to generate barium carbonate in atmosphere for barium hydroxide exposure
The historical relics such as picture, stone matter sculpture.The depickling soluble in water for forming the aqueous solution and being used for mural painting, stone cultural artifact of early stage barium hydroxide.However,
Because most of mural paintings and stone cultural artifact are all more sensitive to moisture content, therefore this method can cause bigger injury to historical relic
(Arai,Yasuo.Chemistry of powder production.Vol.6.Springer Science&Business
Media,2012).Nanometer barium hydroxide is the nanoscale solids particle of barium hydroxide.In recent years, nanometer barium hydroxide is synthesized
For in historical relic's protection, and certain effect is shown.This method is the solid particle dispersions by nanometer barium hydroxide in alcohol
Solution in so as to reinforcing historical relic.Such as Piero Baglioni strengthen the pigment of Mayan mural painting using nanometer barium hydroxide,
Achieve good effect (Journal of Colloid and Interface Science, 2013,392:42-49).Ana
Paula Ferreira Pinto have studied consolidation effect (Journal of of nanometer barium hydroxide for stone cultural artifact comprehensively
Colloid and Interface Science,2016,19:467–476).However, the problem of presently, there are is a nanometer hydrogen-oxygen
Thing does not possess fire-proof function to historical relic hereinafter after changing barium reinforcing historical relic.
The content of the invention
Technical problems to be solved
In order to avoid the shortcomings of the prior art, the present invention proposes a kind of nanometer barium hydroxide/hexagonal nanometer boron nitride
Composite and preparation method, thing does not possess asking for fire-proof function to historical relic hereinafter after solving current nanometer barium hydroxide reinforcing historical relic
Topic.The preparation process of the present invention is simple, controllable.Meanwhile different barium hydroxides can be obtained by adjusting material content and born
Nanometer barium hydroxide/hexagonal nanometer boron nitride composite of carrying capacity.Compared with prior art, six are added in preparation process
Square boron nitride.Nanometer barium hydroxide is connected by hexagonal boron nitride piece.One side nanometer barium hydroxide generates barium carbonate
It is connected with each other afterwards between particle so as to obtain the barium carbonate of big crystal.On the other hand, the superpower heat endurance of hexagonal boron nitride makes
Historical relic has fireproof function.
Technical scheme
A kind of nanometer barium hydroxide/hexagonal nanometer boron nitride composite, it is characterised in that component is：Mass percent is
10%-15% hexagonal boron nitride, remaining is barium hydroxide.
The barium hydroxide is barium hydroxide octahydrate.
A kind of method for preparing the nanometer barium hydroxide/hexagonal nanometer boron nitride composite, it is characterised in that step
It is as follows：
The stripping of step 1, hexagonal boron nitride：Hexagonal boron nitride powder is added in dimethylformamide and obtains 2.9%-
The ultrasonic 8-12h under conditions of 300-500W, 80-100KHz of 4.7% hexagonal boron nitride solution；By the good solution of ultrasound
Supernatant after 5000-7000 revs/min of centrifugation 5-10 minute nitrogenizes in 80-100 degrees Celsius of drying, six sides for obtaining having peeled off
Boron powder aoxidizes hexagonal boron nitride powder；
The preparation of step 2, nanometer barium hydroxide/hexagonal boron nitride：By barium hydroxide octahydrate and oxidation hexagonal boron nitride
Powder mixing is added in isopropanol, is placed in the closed container full of high-purity argon gas；Heat and stir to 200~220 degree, be incubated
Room temperature is naturally cooled to after 36-84h；
Wherein barium hydroxide octahydrate, the mass ratio for aoxidizing hexagonal boron nitride and isopropanol is 1:61.5~150:100；
Step 3：By the solution after cooling, 30-50 degree dries 6-12h and obtains nanometer barium hydroxide/six in vacuum drying chamber
Square boron nitride nm composite material.
Beneficial effect
A kind of nanometer barium hydroxide/hexagonal nanometer boron nitride composite proposed by the present invention and preparation method, wherein six
The mass percent of square boron nitride is 10%-15%, and remaining is barium hydroxide.By barium hydroxide octahydrate and oxidation six sides nitridation
Boron powder heating stirring in isopropanol obtains a nanometer barium hydroxide/hexagonal nanometer boron nitride composite, and method simply may be used
To accomplish largely to produce.Secondly as the addition of hexagonal boron nitride, compared with existing barium hydroxide, the side of the barium hydroxide/six
Nanometer barium hydroxide particulate load becomes carbonic acid on hexagonal boron nitride lamella in absorption air in boron nitride nm composite material
After barium, on the one hand barium carbonate particle can connect historical relic due to a length of big crystal grain barium carbonate that is formed by connecting of hexagonal boron nitride piece
Between gap so as to reinforce historical relic, on the other hand due to the excellent heat endurance of hexagonal boron nitride can make historical relic have fire prevention
Performance is not destroyed so as to historical relic in unexpected fire.
Embodiment
In conjunction with embodiment, the invention will be further described：
First by the stripping of hexagonal boron nitride：Hexagonal boron nitride powder is added in dimethylformamide and obtains 2.9%-
The ultrasonic 8-12h under conditions of 300-500W, 80-100KHz of 4.7% hexagonal boron nitride solution；By the good solution of ultrasound
Supernatant after 5000-7000 revs/min of centrifugation 5-10 minute nitrogenizes in 80-100 degrees Celsius of drying, six sides for obtaining having peeled off
Boron powder aoxidizes hexagonal boron nitride powder.
Embodiment one：
Barium hydroxide octahydrate is mixed to add in isopropanol with oxidation hexagonal boron nitride powder and is placed in full of high-purity argon gas
Closed container in.Wherein barium hydroxide octahydrate, the mass ratio for aoxidizing hexagonal boron nitride and absolute ethyl alcohol is 1:61.5:100.
By said mixture heating and strong agitation is to 200 degree.Room temperature is naturally cooled to after insulation 36h.Solution after cooling is poured into
Beaker 30 degree of dry 6h in vacuum drying chamber obtain a nanometer barium hydroxide/hexagonal nanometer boron nitride composite.
Embodiment two：
Barium hydroxide octahydrate is mixed to add in isopropanol with oxidation hexagonal boron nitride powder and is placed in full of high-purity argon gas
Closed container in.Wherein barium hydroxide octahydrate, the mass ratio for aoxidizing hexagonal boron nitride and absolute ethyl alcohol is 1:85.5:100.
By said mixture heating and strong agitation is to 210 degree.Room temperature is naturally cooled to after insulation 48h.Solution after cooling is poured into
Beaker 40 degree of dry 9h in vacuum drying chamber obtain a nanometer barium hydroxide/hexagonal nanometer boron nitride composite.
Embodiment three：
Barium hydroxide octahydrate is mixed to add in isopropanol with oxidation hexagonal boron nitride powder and is placed in full of high-purity argon gas
Closed container in.Wherein barium hydroxide octahydrate, the mass ratio for aoxidizing hexagonal boron nitride and absolute ethyl alcohol is 1:110.5:
100.By said mixture heating and strong agitation is to 215 degree.Room temperature is naturally cooled to after insulation 60h.By the solution after cooling
Pour into beaker 50 degree of dry 12h in vacuum drying chamber and obtain a nanometer barium hydroxide/hexagonal nanometer boron nitride composite.
Example IV：
Barium hydroxide octahydrate is mixed to add in isopropanol with oxidation hexagonal boron nitride powder and is placed in full of the close of nitrogen
Close in container.Wherein barium hydroxide octahydrate, the mass ratio for aoxidizing hexagonal boron nitride and absolute ethyl alcohol is 1:150:100.Will be upper
State mixture heating and strong agitation is to 220 degree.Room temperature is naturally cooled to after insulation 84h.Solution after cooling is poured into beaker
40 degree of dry 10h obtain a nanometer barium hydroxide/hexagonal nanometer boron nitride composite in vacuum drying chamber.
Claims (3)
1. a kind of nanometer barium hydroxide/hexagonal nanometer boron nitride composite, it is characterised in that component is：Mass percent is
10%-15% hexagonal boron nitride, remaining is barium hydroxide.
2. nanometer barium hydroxide/hexagonal nanometer boron nitride composite according to claim 1, it is characterised in that：The hydrogen
Barium monoxide is barium hydroxide octahydrate.
3. a kind of method for preparing the described nanometer of barium hydroxide of claim 1 or 2/hexagonal nanometer boron nitride composite, it is special
Sign is that step is as follows：
The stripping of step 1, hexagonal boron nitride：Hexagonal boron nitride powder is added in dimethylformamide and obtains 2.9%-
The ultrasonic 8-12h under conditions of 300-500W, 80-100KHz of 4.7% hexagonal boron nitride solution；By the good solution of ultrasound
Supernatant after 5000-7000 revs/min of centrifugation 5-10 minute nitrogenizes in 80-100 degrees Celsius of drying, six sides for obtaining having peeled off
Boron powder aoxidizes hexagonal boron nitride powder；
The preparation of step 2, nanometer barium hydroxide/hexagonal boron nitride：By barium hydroxide octahydrate and oxidation hexagonal boron nitride powder
Mixing is added in isopropanol, is placed in the closed container full of high-purity argon gas；Heat and stir to 200~220 degree, be incubated 36-
Room temperature is naturally cooled to after 84h；
Wherein barium hydroxide octahydrate, the mass ratio for aoxidizing hexagonal boron nitride and isopropanol is 1:61.5~150:100；
Step 3：By the solution after cooling, 30-50 degree dries 6-12h and obtains the side's nitrogen of a nanometer barium hydroxide/six in vacuum drying chamber
Change boron nano composite material.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109971285A (en) * | 2019-04-25 | 2019-07-05 | 西北工业大学 | A kind of nanometer of barium hydroxide/polyacrylic resin composite material and preparation method |
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| US4016244A (en) * | 1974-01-23 | 1977-04-05 | Hitachi, Ltd. | Process for production of cubic boron nitride |
| CN106006693A (en) * | 2016-05-17 | 2016-10-12 | 西北工业大学 | High-stability calcium hydroxide/graphene nanocomposite and preparation method |
| CN106834975A (en) * | 2015-12-03 | 2017-06-13 | 宁波欧凯洛五金有限公司 | A kind of high-strength alloy drill bit |
| CN107140669A (en) * | 2017-06-20 | 2017-09-08 | 西北工业大学 | The preparation method of nano calcium hydroxide/hexagonal nanometer boron nitride composite |
-
2017
- 2017-09-25 CN CN201710871660.0A patent/CN107880903A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4016244A (en) * | 1974-01-23 | 1977-04-05 | Hitachi, Ltd. | Process for production of cubic boron nitride |
| CN106834975A (en) * | 2015-12-03 | 2017-06-13 | 宁波欧凯洛五金有限公司 | A kind of high-strength alloy drill bit |
| CN106006693A (en) * | 2016-05-17 | 2016-10-12 | 西北工业大学 | High-stability calcium hydroxide/graphene nanocomposite and preparation method |
| CN107140669A (en) * | 2017-06-20 | 2017-09-08 | 西北工业大学 | The preparation method of nano calcium hydroxide/hexagonal nanometer boron nitride composite |
Non-Patent Citations (1)
| Title |
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| 华维三等: "石墨/Ba(OH)2 8H2O复合相变材料的制备及热性能", 《太阳能学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109971285A (en) * | 2019-04-25 | 2019-07-05 | 西北工业大学 | A kind of nanometer of barium hydroxide/polyacrylic resin composite material and preparation method |
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Inventor after: Li Xuanhua Inventor after: Zhu Jinmeng Inventor after: Wei Bingqing Inventor before: Li Xuanhua Inventor before: Zhu Jinmeng |
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Application publication date: 20180406 |