CN105695983A - Nano silicon carbide glue-containing slurry for laser melt injection and preparation method thereof - Google Patents
Nano silicon carbide glue-containing slurry for laser melt injection and preparation method thereof Download PDFInfo
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- CN105695983A CN105695983A CN201610061898.2A CN201610061898A CN105695983A CN 105695983 A CN105695983 A CN 105695983A CN 201610061898 A CN201610061898 A CN 201610061898A CN 105695983 A CN105695983 A CN 105695983A
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- silicon carbide
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- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims abstract description 101
- 229910010271 silicon carbide Inorganic materials 0.000 title claims abstract description 60
- 239000003292 glue Substances 0.000 title claims abstract description 21
- 239000002002 slurry Substances 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims description 13
- 239000005543 nano-size silicon particle Substances 0.000 title abstract description 7
- 238000002347 injection Methods 0.000 title abstract 4
- 239000007924 injection Substances 0.000 title abstract 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 87
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 81
- 239000011259 mixed solution Substances 0.000 claims abstract description 48
- 239000000843 powder Substances 0.000 claims abstract description 21
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 claims abstract description 18
- 239000000839 emulsion Substances 0.000 claims abstract description 17
- 229920002689 polyvinyl acetate Polymers 0.000 claims abstract description 16
- 239000011118 polyvinyl acetate Substances 0.000 claims abstract description 16
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims abstract description 9
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 39
- 239000004568 cement Substances 0.000 claims description 35
- 238000003756 stirring Methods 0.000 claims description 30
- 239000006185 dispersion Substances 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 25
- 239000003513 alkali Substances 0.000 claims description 22
- 239000008367 deionised water Substances 0.000 claims description 20
- 229910021641 deionized water Inorganic materials 0.000 claims description 20
- 238000004140 cleaning Methods 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 11
- 239000008187 granular material Substances 0.000 claims description 10
- 238000004806 packaging method and process Methods 0.000 claims description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 4
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000012986 modification Methods 0.000 abstract description 5
- 230000004048 modification Effects 0.000 abstract description 5
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 238000003618 dip coating Methods 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract description 2
- 239000000725 suspension Substances 0.000 abstract description 2
- 238000004062 sedimentation Methods 0.000 abstract 1
- 229960004756 ethanol Drugs 0.000 description 10
- 239000000047 product Substances 0.000 description 5
- 239000002105 nanoparticle Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000009461 vacuum packaging Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 229910000420 cerium oxide Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000051 modifying effect Effects 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 229920001651 Cyanoacrylate Polymers 0.000 description 1
- 206010013786 Dry skin Diseases 0.000 description 1
- MWCLLHOVUTZFKS-UHFFFAOYSA-N Methyl cyanoacrylate Chemical compound COC(=O)C(=C)C#N MWCLLHOVUTZFKS-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000011858 nanopowder Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62625—Wet mixtures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63404—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B35/63416—Polyvinylalcohols [PVA]; Polyvinylacetates
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63448—Polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B35/63488—Polyethers, e.g. alkylphenol polyglycolether, polyethylene glycol [PEG], polyethylene oxide [PEO]
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5454—Particle size related information expressed by the size of the particles or aggregates thereof nanometer sized, i.e. below 100 nm
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- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
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- Processes Of Treating Macromolecular Substances (AREA)
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Abstract
The invention discloses nano silicon carbide glue-containing slurry for laser melt injection. The nano silicon carbide glue-containing slurry for laser melt injection is characterized by comprising, by mass, 3-5% of nano silicon carbide powder, 0.2-0.3% of polyethylene glycol, 0.2-0.3% of tetramethylammonium hydroxide, and the balance a gel-containing alcohol-water mixed solution. The gel-containing alcohol-water mixed solution is composed of ionized water, absolute ethyl alcohol and polyvinyl acetate emulsion (commonly known as white emulsion), wherein the volume fraction of the polyvinyl acetate emulsion accounting for the gel-containing alcohol-water mixed solution is 5-10%, and the balance is an alcohol-water mixed solution containing the absolute ethyl alcohol and the ionized water with the volume ratio being 1:1. The slurry is suitable for brush coating, dip-coating, spray coating and other coating modes; moreover, the slurry has good suspension stability, can stably suspend for 2 months without sedimentation and can meet the requirements for introducing micro-fine powder to the field of particle surface modification technologies such as laser melt injection.
Description
Technical field
The present invention relates to a kind of nanometer silicon carbide slurry, especially a kind of nanometer silicon carbide is containing rubber cement material and preparation method thereof, and specifically the molten note nanometer silicon carbide of a kind of laser is containing rubber cement material and preparation method thereof。
Background technology
It is that a kind of granule received much concern in recent years strengthens process for modifying surface that laser melts note technology。Its ultimate principle is: utilizing high energy density laser heat modification surface of the work to form it into molten bath while, granule will be strengthened and introduce modified surface of the work molten bath, granule enhanced surface layers is formed at modified surface of the work, thus realizing improving the performances such as the wearability of workpiece, corrosion resistance after condensation。At present, in the molten note process of laser, powder body introduces and relies primarily on powder feeder；But, diameter of particle is had strict demand by existing powder feeder, is difficulty with conveying let alone conveying nano-powder for the particle diameter powder body less than 10 microns。It can be said that melt the introducing of nano-particle in note technology at laser can only adopt pre-setting method at present。
It is known that nano-particle is only small due to its grain diameter, as easy as rolling off a log generation agglomeration, causes the modifying properties of the many excellences of nano-particle to be not in full use。Nano silicon carbide powder is as a kind of purposes nano material extremely widely, and presenting polymolecularity feature in application is also one of its target pursued all the time。It is dispersed in nano silicon carbide powder after a certain particular solution prepares into nanometer silicon carbide slurry to apply again, is a good solution route of its agglomeration traits。The correlational study both domestic and external of this respect is more, for instance the research paper " research of nano SiC aqueous suspension stability " of Deng Bin etc. (" Changsha Institute of Electric Power Engineering journal ", 2003, the 18th volume the 1st phase), etc.。But, after these slurry dryings solidify, nano silicon carbide granulate is very poor with material modified surface adhesive, it is difficult to meets laser and melts the requirement of note introducing nano silicon carbide granulate。
Solving the method that this problem is easiest to expect is be dispersed in by nano silicon carbide powder a certain specific in sol solution so that it is can be high dispersive feature the characteristic adhering well to material modified surface after having dry solidification。But, theoretical according to Granular composite, subparticle can only just have high dispersive stable suspersion feature in solution system suitable with it, say, that subparticle and its dispersion soln have uniqueness。Such as, research paper " nano-cerium oxide dispersion behavior in alcohol water mixed solution " (" rare earth " according to Wang Hongyu, Cheng Man etc., 2014,35th volume the 3rd phase) known, for nano-cerium oxide, no matter it be adopt pure water or ethanol all cannot obtain high dispersive stable suspersion feature as dispersion soln, then has good high dispersive stable suspersion in alcohol water mixed solution。In other words, for different types of subparticle develop high dispersive stable suspersion containing rubber cement material, it is necessary to creatively select with it adaptive dispersion soln based on Granular composite theory and adopt specific process for dispersing。
As far as the applicant is aware, it is available to there is no a kind of nanometer silicon carbide material containing rubber cement at present, this has the nano material of excellent specific property and melts the application of the particle surface modification technical fields such as note at laser to a certain degree to constrain nanometer silicon carbide。
Summary of the invention
It is an object of the invention to be available for it and use in the particle surface modification technical fields such as the molten note of laser for there is no a kind of nanometer silicon carbide material containing rubber cement at present, the molten note nanometer silicon carbide of a kind of laser of invention is containing rubber cement material and preparation method thereof。
One of technical scheme is:
The molten note nanometer silicon carbide of a kind of laser containing rubber cement material, it is characterized in that it by accounting for the nano silicon carbide powder of stock quality mark 3-5%, the Polyethylene Glycol accounting for stock quality mark 0.2%-0.3%, the mixed solution containing gum alcohol water of Tetramethylammonium hydroxide and surplus that accounts for stock quality mark 0.2%-0.3% form。Described it is made up of deionized water, dehydrated alcohol and polyvinyl acetate emulsion (being commonly called as white glue with vinyl) containing gum alcohol water mixed solution；Wherein, it is 5-10% that polyvinyl acetate emulsion accounts for the volume fraction containing gum alcohol water mixed solution, and surplus is then for dehydrated alcohol and alcohol water mixed solution that deionized water volume ratio is 1:1。
The mean diameter of described nano silicon carbide powder is 20-60 nanometer。
Vinyl acetate content in described polyvinyl acetate emulsion is between 20% to 40%。
The two of technical scheme are:
The molten note nanometer silicon carbide of a kind of laser, containing rubber cement preparation method for material, is characterized in that it comprises the following steps:
First, alcohol water mixed solution is prepared according to the volume ratio 1:1 of dehydrated alcohol and deionized water；
Secondly, measure the dehydrated alcohol prepared of polyvinyl acetate emulsion that volume fraction is 5-10% and surplus and alcohol water mixed solution that deionized water volume ratio is 1:1, both being put in container stirs no less than 5 minutes after mixing, it is thus achieved that containing gum alcohol water mixed solution, and measure its density；
Again, measure that mass fraction accounts for the nano silicon carbide powder of stock quality mark 3-5%, mass fraction accounts for the Polyethylene Glycol of stock quality mark 0.25%, mass fraction accounts for the Tetramethylammonium hydroxide of stock quality mark 0.25% and surplus containing gum alcohol water mixed solution, place them in container and stir no less than 10 minutes after mixing, it is thus achieved that nanometer silicon carbide is containing glue dispersion liquid；
Finally, being placed in ultrasonic device and carry out ultrasonic disperse by the nanometer silicon carbide dispersion liquid containing glue after stirring, jitter time is 30 ~ 60 minutes, can obtain the molten note nanometer silicon carbide of laser containing rubber cement material finished product。
Described nano silicon carbide powder is preferably made alkali cleaning before measuring and processes to remove in powder body impurity and powder granule surface is carried out pretreatment, it is characterized in that alkali cleaning process comprises the steps: 1. alkali cleaning；Being put into by nano silicon carbide powder equipped with in the sodium hydrate aqueous solution container that concentration is 10%, stirring was no less than 20 minutes。2. alkali liquor is removed；Stand until nano silicon carbide powder is all deposited in container bottom after stirring, with the alkali liquor in suction pipe sucking-off container。3. clean；Addition deionized water in the container of nano silicon carbide powder is left in bottom, nano silicon carbide powder after alkali cleaning is cleaned repeatedly, stirring removed ionized water after 5 minutes every time, and rejoin clean deionized water, until clean up the pH value after namely adding deionized water and stirring equal to 7。4. dry powder body；By the nano silicon carbide powder after cleaning, it is placed in drying baker and dries。
If the antivacuum packaging powder body of described nano silicon carbide powder, when measuring need on required mass fraction basis divided by its dispersion rate after weigh。
The measuring method of described dispersion rate is: weighing 1g is dried antivacuum packaging powder body through 120 DEG C × 4 hours, puts it in the container of the alcohol water mixed solution (volume ratio of dehydrated alcohol and deionized water is 1:1) being placed with 10ml, ultrasonic disperse 30 minutes；After standing 10 minutes, measuring container is slurry 5ml at the middle and upper levels, and measures particles contained quality in this 5ml slurry and, again divided by 0.5g, can obtain dispersion rate。
Part that the present invention does not relate to is all same as the prior art maybe can adopt existing techniques in realizing。
Beneficial effects of the present invention:
(1) present invention obtains the molten note nanometer silicon carbide of a kind of laser containing rubber cement material, it is coated onto material surface to be modified, can form at material surface to be modified after dry solidification that adhesiveness is strong and the nano silicon carbide granulate initialization layer of Dispersed precipitate, it is possible to meet the particle surface modification technical fields such as the molten note of laser and introduce nano-particle needs。
(2) the molten note nanometer silicon carbide of laser of the present invention is containing rubber cement material, is adaptable to adopt the painting methods such as brushing, dip-coating and spraying；And, this slurry has good suspension stability, within 2 months, can not settle by stable suspersion, has splendid serviceability。
(3) the molten note nanometer silicon carbide preparation method for material containing rubber cement of laser of the present invention is simple and easy to do, and productivity ratio is high, it is not necessary to special installation；Dispersion rate is introduced, it may be achieved the precise controlling of nano silicon carbide silicone content simultaneously for antivacuum packaging granule。
Accompanying drawing explanation
Fig. 1 adds the nanometer silicon carbide of other glues containing rubber cement material (left side test tube) and nanometer silicon carbide of the present invention containing rubber cement material (the right test tube) sample object photo。
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further illustrated。
The following is laser of the present invention and melt the note nanometer silicon carbide example containing rubber cement material and preparation method thereof, but be not limited only to these examples, as long as adopting the method for the invention, all can reach the purpose of the present invention。
Following instance supposes the proportion of ethanol be 0.78, the proportion of water be 1, can carry out calculating accordingly and adjusting according to actual specific gravity time actually used。Simultaneously, it is contemplated that add nano silicon carbide powder disposed slurry change in volume only small, therefore be left out add powder body disposed slurry volume change。Nano silicon carbide powder in following embodiment is preferably made alkali cleaning before measuring and processes to remove in powder body impurity and adopt following methods to carry out alkali cleaning pretreatment on powder granule surface, and concrete process step is: 1. alkali cleaning；Being put into by nano silicon carbide powder equipped with in the sodium hydrate aqueous solution container that concentration is 10%, stirring was no less than 20 minutes。2. alkali liquor is removed；Stand until nano silicon carbide powder is all deposited in container bottom after stirring, with the alkali liquor in suction pipe sucking-off container。3. clean；Addition deionized water in the container of nano silicon carbide powder is left in bottom, nano silicon carbide powder after alkali cleaning is cleaned repeatedly, stirring removed ionized water after 5 minutes every time, and rejoin clean deionized water, until clean up the pH value after namely adding deionized water and stirring equal to 7。4. dry powder body；By the nano silicon carbide powder after cleaning, it is placed in drying baker and dries。If nano silicon carbide powder is antivacuum packaging powder body, when measuring need on required mass fraction basis divided by its dispersion rate after weigh。The measuring method of dispersion rate is: weighing 1g is dried antivacuum packaging powder body through 120 DEG C × 4 hours, puts it in the container of the alcohol water mixed solution (volume ratio of dehydrated alcohol and deionized water is 1:1) being placed with 10ml, ultrasonic disperse 30 minutes；After standing 10 minutes, measuring container is slurry 5ml at the middle and upper levels, and measures particles contained quality in this 5ml slurry and, again divided by 0.5g, can obtain dispersion rate。
Embodiment one。
Selecting mean diameter is the vacuum packaging nano silicon carbide powder of 40 nanometers, prepare nanometer silicon carbide mass fraction be 5% containing rubber cement material 100ml。When preparation is containing gum alcohol water mixed solution, used ethanol is SILVER REAGENT dehydrated alcohol, water is deionized water, and the polyvinyl acetate emulsion added is commercial white glue with vinyl, and its vinyl acetate content is more than 20% to 40%。
First, alcohol water mixed solution is prepared according to the volume ratio 1:1 of second alcohol and water。Secondly, measure the polyvinyl acetate emulsion of 5ml and the ethanol prepared of 95ml and alcohol water mixed solution that water volume ratio is 1:1, both being put in container stirs no less than 5 minutes after mixing, it is thus achieved that containing gum alcohol water mixed solution, measuring its density is 0.9g/ml。Again, measure the nano silicon carbide powder after 4.8g alkali cleaning processes, the 0.24g(arbitrary value that is alternatively between 0.196g-0.288g) Polyethylene Glycol, the 0.24g(arbitrary value that is alternatively between 0.196g-0.288g) Tetramethylammonium hydroxide and 100ml containing gum alcohol water mixed solution (its quality is 90g), place them in container and stir no less than 10 minutes after mixing, it is thus achieved that nanometer silicon carbide is containing glue dispersion liquid。Finally, being placed in ultrasonic device and carry out ultrasonic disperse by the nanometer silicon carbide dispersion liquid containing glue after stirring, jitter time is 45 minutes, and can obtain nanometer silicon carbide mass fraction is that the molten note nanometer silicon carbide of 5% laser is containing rubber cement material finished product。
Embodiment two。
Select mean diameter be 40 nanometers vacuum packaging nano silicon carbide powder, prepare nanometer silicon carbide mass fraction be 4% containing rubber cement material 100ml。When preparation is containing gum alcohol water mixed solution, used raw material is identical with embodiment one。
First, alcohol water mixed solution is prepared according to the volume ratio 1:1 of second alcohol and water。Secondly, measure the polyvinyl acetate emulsion of 10ml and the ethanol prepared of 90ml and alcohol water mixed solution that water volume ratio is 1:1, both being put in container stirs no less than 5 minutes after mixing, it is thus achieved that containing gum alcohol water mixed solution, measuring its density is 0.9g/ml。Again, measure the nano silicon carbide powder after 3.8g alkali cleaning processes, the 0.24g(arbitrary value that is alternatively between 0.196g-0.288g) Polyethylene Glycol, the 0.24g(arbitrary value that is alternatively between 0.196g-0.288g) Tetramethylammonium hydroxide and 100ml containing gum alcohol water mixed solution (its quality is 90g), place them in container and stir no less than 10 minutes after mixing, it is thus achieved that nanometer silicon carbide is containing glue dispersion liquid。Finally, being placed in ultrasonic device and carry out ultrasonic disperse by the nanometer silicon carbide dispersion liquid containing glue after stirring, jitter time is 60 minutes, and can obtain nanometer silicon carbide mass fraction is that the molten note nanometer silicon carbide of 4% laser is containing rubber cement material finished product。
Embodiment three。
Select mean diameter be 60 nanometers vacuum packaging nano silicon carbide powder, prepare nanometer silicon carbide mass fraction be 3% containing rubber cement material 100ml。When preparation is containing gum alcohol water mixed solution, used raw material is identical with embodiment one。
First, alcohol water mixed solution is prepared according to the volume ratio 1:1 of second alcohol and water。Secondly, measure the polyvinyl acetate emulsion of 5ml and the ethanol prepared of 95ml and alcohol water mixed solution that water volume ratio is 1:1, both being put in container stirs no less than 5 minutes after mixing, it is thus achieved that containing gum alcohol water mixed solution, measuring its density is 0.9g/ml。Again, measure the nano silicon carbide powder after 3g alkali cleaning processes, arbitrary value between 0.23g(or 0.184g-0.276g) Polyethylene Glycol, arbitrary value between 0.23g(or 0.184g-0.276g) Tetramethylammonium hydroxide and 100ml containing gum alcohol water mixed solution (its quality is 90g), place them in container and stir no less than 10 minutes after mixing, it is thus achieved that nanometer silicon carbide is containing glue dispersion liquid。Finally, being placed in ultrasonic device and carry out ultrasonic disperse by the nanometer silicon carbide dispersion liquid containing glue after stirring, jitter time is 30 minutes, and can obtain nanometer silicon carbide mass fraction is that the molten note nanometer silicon carbide of 4% laser is containing rubber cement material finished product。
Embodiment four。
Selecting mean diameter is the common packed nano silicon carbide powder of 50 nanometers, prepare nanometer silicon carbide mass fraction be 4% containing rubber cement material 100ml。When preparation is containing gum alcohol water mixed solution, used raw material is identical with embodiment one。
First, alcohol water mixed solution is prepared according to the volume ratio 1:1 of second alcohol and water。Secondly, measure the polyvinyl acetate emulsion of 10ml and the ethanol prepared of 90ml and alcohol water mixed solution that water volume ratio is 1:1, both being put in container stirs no less than 5 minutes after mixing, it is thus achieved that containing gum alcohol water mixed solution, measuring its density is 0.9g/ml。Again, the dispersion rate of the common packed nano silicon carbide powder measuring 50 nanometers is 35% that is 0.35, measure the nano silicon carbide powder after 10.86g alkali cleaning processes, the Polyethylene Glycol of 0.24g, the Tetramethylammonium hydroxide of 0.24g and 100ml containing gum alcohol water mixed solution (its quality is 90g), place them in container and stir no less than 10 minutes after mixing, it is thus achieved that nanometer silicon carbide is containing glue dispersion liquid。Finally, nanometer silicon carbide dispersion liquid containing glue after stirring is placed in ultrasonic device and carries out ultrasonic disperse, jitter time is 50 minutes, and after standing 10 minutes, removal container bottom precipitation can obtain nanometer silicon carbide mass fraction is that the molten note nanometer silicon carbide of 4% laser is containing rubber cement material finished product。
" polyvinyl acetate emulsion of 10ml and the ethanol prepared of 90ml and the alcohol water mixed solution that water volume ratio is 1:1 " is replaced in embodiment four respectively with " the alcohol water mixed solution that the ethanol of the 100ml prepared and water volume ratio are 1:1 " and " the cyanoacrylate glue (being commonly called as all-purpose adhesive) of 10ml and the ethanol prepared of 90ml and the alcohol water mixed solution that water volume ratio is 1:1 ", other conditions are all identical, prepare the nanometer silicon carbide of glue-free nanometer silicon carbide slurry and other glues of interpolation containing rubber cement material。
The invention described above nanometer silicon carbide is containing rubber cement material, glue-free nanometer silicon carbide slurry and the nanometer silicon carbide performance comparison containing rubber cement material adding other glues, and as shown in table 1, effect in kind is as shown in Figure 1。
Test shows, the effect in kind of embodiment one to three is similar to Fig. 1, and performance parameter is close with table 1。
Table 1
By embodiment one to three gained containing rubber cement material with carry out contrast test without rubber cement material, it have been experienced that its performance is similar with table 1 or matches。Coating or molten note effect are substantially better than existing without rubber cement material, will not enumerate。
Foregoing description and explanation simply have expressed technology design and feature and the representative case study on implementation thereof of the present invention; can not limit the scope of the invention with this; all equivalences done according to present inventive concept essence change or modify, and all should be encompassed in protection scope of the present invention。
Part that the present invention does not relate to is same as the prior art maybe can adopt prior art to be realized。
Claims (7)
1. the molten note nanometer silicon carbide of laser is containing a rubber cement material, it is characterized in that it by accounting for the nano silicon carbide powder of stock quality percent 3-5%, the Polyethylene Glycol accounting for stock quality percent 0.2%-0.3%, the mixed solution containing gum alcohol water of Tetramethylammonium hydroxide and surplus that accounts for stock quality mark 0.2%-0.3% form；Described it is made up of deionized water, dehydrated alcohol and polyvinyl acetate emulsion containing gum alcohol water mixed solution；Wherein, it is 5-10% that polyvinyl acetate emulsion accounts for the volume fraction containing gum alcohol water mixed solution, and surplus is then for dehydrated alcohol and alcohol water mixed solution that deionized water volume ratio is 1:1。
2. the molten note nanometer silicon carbide of laser according to claim 1 is containing rubber cement material, it is characterized in that: the mean diameter of described nano silicon carbide powder is 20-60 nanometer。
3. the molten note nanometer silicon carbide of laser according to claim 1 is containing rubber cement material, it is characterized in that: the vinyl acetate content in described polyvinyl acetate emulsion is between 20% to 40%。
4. the molten note nanometer silicon carbide of laser is containing a rubber cement preparation method for material, it is characterized in that it comprises the following steps:
First, alcohol water mixed solution is prepared according to the volume ratio 1:1 of dehydrated alcohol and deionized water；
Secondly, measure the alcohol water mixed solution of polyvinyl acetate emulsion that volume fraction is 5-10% and surplus, both are put in container and stir no less than 5 minutes after mixing, it is thus achieved that containing gum alcohol water mixed solution, and measure its density；
Again, measure that mass fraction accounts for the nano silicon carbide powder of stock quality mark 3-5%, mass fraction accounts for the Polyethylene Glycol of stock quality mark 0.2%-0.3%, mass fraction accounts for the Tetramethylammonium hydroxide of stock quality mark 0.2%-0.3% and surplus containing gum alcohol water mixed solution, place them in container and stir no less than 10 minutes after mixing, it is thus achieved that nanometer silicon carbide is containing glue dispersion liquid；
Finally, being placed in ultrasonic device and carry out ultrasonic disperse by the nanometer silicon carbide dispersion liquid containing glue after stirring, jitter time is 30 ~ 60 minutes, namely obtains the molten note nanometer silicon carbide of laser containing rubber cement material finished product。
5. method according to claim 4, is characterized in that described nano silicon carbide powder carries out alkali cleaning before measuring and processes to remove in powder body impurity and powder granule surface is carried out pretreatment；Described alkali cleaning processes and comprises the steps: 1. alkali cleaning；Being put into by nano silicon carbide powder equipped with in the sodium hydrate aqueous solution container that concentration is 10%, stirring was no less than 20 minutes；2. alkali liquor is removed；Stand until nano silicon carbide powder is all deposited in container bottom after stirring, with the alkali liquor in suction pipe sucking-off container；3. clean；Addition deionized water in the container of nano silicon carbide powder is left in bottom, nano silicon carbide powder after alkali cleaning is cleaned repeatedly, stirring removed ionized water after 5 minutes every time, and rejoin clean deionized water, until clean up the pH value after namely adding deionized water and stirring equal to 7；4. dry powder body；By the nano silicon carbide powder after cleaning, it is placed in drying baker and dries。
6. method according to claim 4, if it is characterized in that the antivacuum packaging powder body of described nano silicon carbide powder, when measuring need on required mass fraction basis divided by its dispersion rate after weigh。
7. method according to claim 6, it is characterized in that the measuring method of described dispersion rate is: weighing 1g is dried antivacuum packaging powder body through 120 DEG C × 4 hours, put it in the alcohol water mixed solution container that volume ratio is 1:1 being placed with 10ml dehydrated alcohol and deionized water, ultrasonic disperse 30 minutes；After standing 10 minutes, measuring container is slurry 5ml at the middle and upper levels, and measures particles contained quality in this 5ml slurry and, again divided by 0.5g, can obtain dispersion rate。
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| CN108892509A (en) * | 2018-08-03 | 2018-11-27 | 宁波哈泰雷碳化物有限公司 | A kind of preparation method of the nanometer silicon carbide slurry for ceramic moulding by casting |
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