CN109912986A - A kind of wax class aggregation and preparation method thereof of carbons powder thickening - Google Patents
A kind of wax class aggregation and preparation method thereof of carbons powder thickening Download PDFInfo
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- CN109912986A CN109912986A CN201910169870.4A CN201910169870A CN109912986A CN 109912986 A CN109912986 A CN 109912986A CN 201910169870 A CN201910169870 A CN 201910169870A CN 109912986 A CN109912986 A CN 109912986A
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- wax
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Abstract
The invention discloses a kind of wax class aggregation and preparation method thereof of carbons powder thickening, component includes wax and carbons powder, and the wax infiltration is in the carbons powder surface；Preparation method is to be heated to melting in the case where being higher than its melting temperature by wax class, and carbons powder is added while stirring at a certain temperature, at a certain temperature refining a period of time, is cooled to room temperature and obtains the product.The following are solids to significantly reduce percolation ratio of wax material during solid-liquid phase change, and the thermal conductivity of wax class significantly improves in fusing point with the semifluid shape not trickled within the scope of 200 DEG C in wax class fusing point for the wax class aggregation of this carbons powder thickening.
Description
Technical field
A kind of be thickened the present invention relates to content of wax aggregation technical field more particularly to carbons powder wax class aggregation and its
Preparation method.
Background technique
The advantages that wax class is many kinds of with its, nontoxic, latent heat of phase change is big is widely used in multiple fields.But low melting point
Wax class cannot keep its original shape under its fusing point and temperatures above, generate trickling, cause to generate in its application system
Leakage phenomenon.
In order to solve leakage problem of the wax class under its fusing point and temperatures above, people have attempted a variety of methods.Li X etc.
(Fabrication and stability of form-stable diatomite/paraffin phase change
Material composites [J] .Energy&Buildings, 2014,76 (2): 284-294.) pass through the paraffin to fusing
Middle diatomite/paraffin sizing phase-change material that diatomite is added and is prepared for powdery, and by the modified paraffin that reduces in surface mixed
Leaching rate in solidifying soil body system.(the Preparation and characterization of expanded such as Lu Z
perlite/paraffin composite as form-stable phase change material[J].Solar
Energy, 2014,108 (108): 460-466.) by into paraffin be added expanded perlite be prepared for expanded perlite/paraffin
Phase-change material, obtained composite phase-change material can keep 2h to ooze out without paraffin at 95 DEG C.(the Preparation and such as Wei
characterization of novel polyamide paraffin MEPCM by interfacial
polymerization technique.J Appl Polym Sci 2013；127:4588-93.) pass through interfacial polymerization legal system
For a kind of novel polyamide/paraffin phase change material microcapsules have been gone out, can disperse very well in water and organic solvent, table
Good chemical stability and thermal stability are revealed.(the Preparation of polyethylene-paraffin such as Ye H
compound as a form-stable solid-liquid phase change material[J].Solar Energy
Materials&Solar Cells, 2000,64 (1): 37-44.) it is prepared for a series of polyethylene/paraffin (PPC) sizing phase transformations
Material has probed into influence of the type of polyethylene and paraffin to PPC heat accumulation and other performances.
(Zhao Tianbo, Li Hongyu, sieve are seen, and bis- urea groups wax class aggregation of and its preparation are waited in research before for this seminar
Method, Chinese invention patent CN106281237A.2017.) react by diisocyanate with organic monoamine to obtain two urea groups it is thick
Wax-basis oil systems of agent thickening.(Zhao Tianbo, Han Xue, sieve are seen, and a kind of wax class aggregation of solid nano particle thickening of is waited
Body and preparation method thereof, Chinese invention patent CN106751939A.2017.) it is obtained by using solid nanoparticles thickening wax class
The wax class aggregation of solid nanoparticles thickening is arrived.Wax class aggregation refining temperature described in both the above patent of invention is higher,
Up to 170 DEG C or more.
Summary of the invention
The purpose of the present invention is to provide a kind of semifluid shapes in wax class fusing point not trickle within the scope of 200 DEG C
The wax class aggregation with higher heat-conductivity, which can be significantly reduced wax class during solid-liquid phase change
Percolation ratio.The wax class aggregation is made of the wax class and carbons powder of different quality ratio, is soaked using wax class to carbons powder
Profit.
Another object of the present invention is to provide a kind of preparation methods of above-mentioned wax class aggregation.
The present invention through the following technical solutions to achieve the above objectives:
The present invention is to be mixed with out carbon under the conditions of heating and thermal insulation in certain mass ratio using carbons powder and wax class
The wax class aggregation of class powder thickening, the wax infiltration is in the carbons powder surface.The carbons powder thickening prepared
Wax class aggregation wax class fusing point within the scope of 200 DEG C for the semifluid shape that does not trickle, and thermal conductivity with higher,
Percolation ratio of wax class during solid-liquid phase change is significantly reduced under conditions of not influencing wax class normal use itself.
As advanced optimizing, the wax class accounts for the 80%~95% of total weight, and the carbons powder accounts for the 5% of total weight
~20%.
As advanced optimizing, the wax refer to one of vegetable wax, animal wax, mineral wax, pertroleum wax, synthetic wax or
Several compositions, preferably pertroleum wax.Wherein vegetable wax includes but is not limited to haze tallow, bayberry wax；Animal wax includes but is not limited to
Beeswax, lanocerin；Mineral wax includes but is not limited to lignite wax, ceresine；Pertroleum wax refers mainly to coarse-grain wax and microwax, including but not
It is limited to No. 50, No. 60, No. 70 paraffin；Synthetic wax includes but is not limited to Fischer-Tropsch wax, polyethylene wax, Ethylene-vinyl acetate copolymerization wax.
As advanced optimizing, the carbons powder refers to graphite powder, carbon black powder, Graphon powder, active powdered carbon, stone
Black alkene powder, graphene oxide powder, graphene nanometer sheet, modified graphene powder, modified graphene oxide powder, modified graphene nanometer
The composition of one or more of piece powder, fullerene powder, carbon nanotube dust.Wherein preferred graphene powder, oxidation stone
Black alkene powder, graphene nanometer sheet.Wherein carbon black powder includes but is not limited to lampblack, channel black, furnace black；Graphene powder includes but unlimited
In the graphene of oxidation-reduction method preparation, the graphene of mechanical stripping method preparation, single-layer graphene, few layer graphene, multilayer stone
Black alkene；Graphene oxide powder includes but is not limited to single-layer graphene oxide, few layer graphene oxide, multilayer graphene oxide；Change
Property Graphene powder include but is not limited to N, B, P doping functional modification graphene.
The present invention also provides the preparation methods of above-mentioned above-mentioned wax class aggregation, comprising the following steps:
(1) wax is heated to its fusing point or more, is completely melt wax；
(2) carbons powder is mixed with wax class liquid obtained by (1), refines certain time at a certain temperature；
(3) stop heating, be cooled to room temperature the wax class aggregation that the thickening of carbons powder can be obtained.
As advanced optimizing, the heating temperature of the step (1) is 50~120 DEG C, and heating time is 0.5~3h.Institute
The heating temperature for stating step (2) is 60~200 DEG C, and the reaction time is 0.5~3h.
The beneficial effects of the present invention are:
(1) the wax class aggregation of carbons powder of the present invention thickening is by the physisorption of carbons powder by wax
Class Molecular Adsorption is in carbons powder surface, and the wax class aggregation of this carbons powder thickening is in wax class fusing point up to 200 DEG C of models
It is the semifluid shape not trickled in enclosing, significantly reduces percolation ratio of wax class during solid-liquid phase change.
(2) thermal conductivity of wax material significantly improves.
(3) present invention selected by carbons powder it is from a wealth of sources, type is more, is easy to buy.
(4) for the wax class aggregation of carbons powder thickening of the present invention in preparation method, refining temperature is lower, minimum
Up to 60 DEG C, preparation method is simple and easy to do.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
In required practical attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the one of the present embodiment
A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is wax class and its aggregation thermal conductivity data；
(a) embodiment 1, (b) embodiment 2, (c) embodiment 3, (d) embodiment 4, (e) embodiment 5；
Fig. 2 is the percolation ratio of the wax class aggregation of carbons powder thickening；
(a) embodiment 1, (b) embodiment 2, (c) embodiment 3, (d) embodiment 4, (e) embodiment 5.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below
Detailed description.Obviously, the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art without making creative work it is obtained it is all its
Its embodiment belongs to the range that the present invention is protected.
Embodiment 1:
By 82.0g50 heating paraffin to 70 DEG C, 1h is kept, is completely melt paraffin.Under stiring by 18.0g graphene
Nanometer sheet is added in the paraffin systems of fusing, is adjusted temperature to 75 DEG C, is refined 2h at this temperature.Stop heating, it is naturally cold
But, continue stirring to mixture to solidify.Continue standing cooled to room temperature and obtains product.
Embodiment 2:
85.0g60 plant haze tallow is heated to 75 DEG C, 1.5h is kept, is completely melt haze tallow.Under stiring by 5.0g
Graphene nanometer sheet and 10.0g multilayer graphene oxide are added in the haze tallow system of fusing, and adjustment temperature is warm herein to 85 DEG C
Degree is lower to refine 1.5h.Stop heating, natural cooling continues stirring to mixture and solidifies.Continue standing cooled to room temperature to obtain
To product.
Embodiment 3:
88.0g60 animal beeswax is heated to 75 DEG C, 1.5h is kept, is completely melt ceresine.Under stiring by 10g stone
Black alkene nanometer sheet and 2g carbon black powder are added in the beeswax system of fusing, are adjusted temperature to 90 DEG C, are refined at this temperature
1.5h.Stop heating, natural cooling continues stirring to mixture and solidifies.Continue standing cooled to room temperature and obtains product.
Embodiment 4:
90.0g70 ceresine is heated to 100 DEG C, 1.5h is kept, is completely melt ceresine.Under stiring by 8.0g graphite
Alkene nanometer sheet and 2.0g graphite composite powder are added in the ceresine system of fusing, are adjusted temperature to 120 DEG C, are refined at this temperature
2h.Stop heating, natural cooling continues stirring to mixture and solidifies.Continue standing cooled to room temperature and obtains product.
Embodiment 5:
88.0g70 Fischer-Tropsch wax is heated to 85 DEG C, 1.5h is kept, is completely melt Fischer-Tropsch wax.Under stiring by 10.0g
Few layer graphene powder and 2.0g carbon nanotube dust are added in the paraffin systems of fusing, and whole temperature is to 100 DEG C, in this temperature
Lower refining 2h.Stop heating, natural cooling continues stirring to mixture and solidifies.Continue standing cooled to room temperature to be produced
Product.
The results are shown in Table 1 for the analysis of Examples 1 to 5 properties of product:
1 Examples 1 to 5 properties of product of table analyze result
As can be seen from Table 1, the wax class aggregation dropping point of carbons powder thickening of the present invention is higher, and at 100 DEG C
Lower 30h Stencil oil-dividing rate is lower.
Fig. 1 is wax class and its aggregation thermal conductivity data；Carbons powder prepared by the present invention is thickened as seen from Figure 1
The thermal conductivity of the relatively used wax class of wax class aggregation significantly improves.
Fig. 2 is the percolation ratio of the wax class aggregation of carbons powder thickening；Carbons powder prepared by the present invention as seen from Figure 2
The wax class aggregation of body thickening significantly reduces wax class in its fusing point with the percolation ratio within the scope of 200 DEG C, and carbons powder
The percolation ratio of the wax class aggregation of thickening is unobvious with the variation of percolation ratio test temperature, can will seep when thickening agent content is higher
Leak rate is reduced to 10% or less.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
It is further to note that specific technical features described in the above specific embodiments, in reconcilable situation
Under, it can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention is to various possible combinations
No further explanation will be given for mode.In addition, various embodiments of the present invention can be combined randomly, as long as its
Without prejudice to thought of the invention, it should also be regarded as the disclosure of the present invention.
Claims (10)
1. a kind of wax class aggregation of carbons powder thickening, which is characterized in that including wax, carbons powder, the wax infiltration is in institute
State carbons powder surface.
2. feature exists according to the wax class aggregation that carbons powder described in right 1 is thickened, the wax account for total weight 80%~
95%, the carbons powder accounts for the 5%~20% of total weight.
3. the wax class aggregation of described in any item carbons powder thickening according to claim 1~2, which is characterized in that the wax
Refer to one or more of vegetable wax, animal wax, mineral wax, pertroleum wax, synthetic wax.
4. the wax class aggregation of carbons powder according to claim 3 thickening, which is characterized in that the vegetable wax include but
It is not limited to haze tallow, bayberry wax；Animal wax includes but is not limited to beeswax, lanocerin；Mineral wax include but is not limited to lignite wax,
Wax；Pertroleum wax is coarse-grain wax or microwax, including but not limited to No. 50, No. 60, No. 70 paraffin；Synthetic wax includes but is not limited to expense
Wax, polyethylene wax, Ethylene-vinyl acetate is ask to be copolymerized wax.
5. the wax class aggregation of described in any item carbons powder thickening according to claim 1~3, which is characterized in that the wax
It is pertroleum wax.
6. the wax class aggregation of described in any item carbons powder thickening according to claim 1~2, which is characterized in that the carbon
Class powder refers to graphite powder, carbon black powder, Graphon powder, expanded graphite powder, active powdered carbon, Graphene powder, graphene oxide
Powder, graphene nanometer sheet, modified graphene powder, modified graphene oxide powder, modified graphene nanometer sheet powder, fullerene powder,
One or more of carbon nanotube powders.
7. the wax class aggregation of carbons powder according to claim 6 thickening, which is characterized in that the carbon black powder include but
It is not limited to lampblack, channel black, furnace black；Graphene powder includes but is not limited to the graphene of oxidation-reduction method preparation, mechanical stripping legal system
Standby graphene, single-layer graphene, few layer graphene, multi-layer graphene；Graphene oxide powder is including but not limited to mono-layer oxidized
Graphene, few layer graphene oxide, multilayer graphene oxide；Modified graphene powder includes but is not limited to N, B, P doping functionalization
Modified graphene.
8. according to the preparation method of the wax class aggregation of the described in any item carbons powders of right 1~7 thickening, which is characterized in that
The following steps are included:
(1) wax is heated to its fusing point or more, is completely melt wax；
(2) carbons powder is mixed with wax class liquid obtained by (1), refines certain time at a certain temperature；
(3) stop heating, be cooled to room temperature the wax class aggregation that the thickening of carbons powder can be obtained.
9. the preparation method of the wax class aggregation of carbons powder thickening according to claim 8, which is characterized in that the step
Suddenly the heating temperature of (1) is 50~120 DEG C, and heating time is 0.5~3h.
10. the preparation method of the wax class aggregation of carbons powder thickening according to claim 8, which is characterized in that described
The heating temperature of step (2) is 60~200 DEG C, and the reaction time is 0.5~3h.
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Cited By (2)
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| CN111732842A (en) * | 2020-07-03 | 2020-10-02 | 山东永丰轮胎有限公司 | Method for improving compatibility of carbon-based material in tire and flame-retardant tire tread using carbon-based material |
| WO2021042442A1 (en) * | 2019-09-06 | 2021-03-11 | 东莞理工学院 | Precision casting wax and preparation method therefor |
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| CN111732842A (en) * | 2020-07-03 | 2020-10-02 | 山东永丰轮胎有限公司 | Method for improving compatibility of carbon-based material in tire and flame-retardant tire tread using carbon-based material |
| CN111732842B (en) * | 2020-07-03 | 2021-06-04 | 山东永丰轮胎有限公司 | Method for improving compatibility of carbon-based material in tire and flame-retardant tire tread using carbon-based material |
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