CN107141842A - A kind of method for improving silicon carbide micro-powder dispersiveness - Google Patents
A kind of method for improving silicon carbide micro-powder dispersiveness Download PDFInfo
- Publication number
- CN107141842A CN107141842A CN201710460433.9A CN201710460433A CN107141842A CN 107141842 A CN107141842 A CN 107141842A CN 201710460433 A CN201710460433 A CN 201710460433A CN 107141842 A CN107141842 A CN 107141842A
- Authority
- CN
- China
- Prior art keywords
- silicon carbide
- powder
- carbide micro
- micro
- weight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000843 powder Substances 0.000 title claims abstract description 75
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 229910010271 silicon carbide Inorganic materials 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 15
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims abstract description 21
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000007864 aqueous solution Substances 0.000 claims abstract description 16
- XKJCHHZQLQNZHY-UHFFFAOYSA-N phthalimide Chemical compound C1=CC=C2C(=O)NC(=O)C2=C1 XKJCHHZQLQNZHY-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000725 suspension Substances 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 238000012986 modification Methods 0.000 claims abstract description 8
- 230000004048 modification Effects 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 239000002244 precipitate Substances 0.000 claims abstract description 6
- 238000010583 slow cooling Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 5
- 150000001336 alkenes Chemical class 0.000 claims 1
- 150000001412 amines Chemical class 0.000 claims 1
- 239000002826 coolant Substances 0.000 claims 1
- 125000004177 diethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims 1
- 238000004537 pulping Methods 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910003978 SiClx Inorganic materials 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910001651 emery Inorganic materials 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- WLLGXSLBOPFWQV-UHFFFAOYSA-N MGK 264 Chemical compound C1=CC2CC1C1C2C(=O)N(CC(CC)CCCC)C1=O WLLGXSLBOPFWQV-UHFFFAOYSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/28—Compounds of silicon
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/08—Treatment with low-molecular-weight non-polymer organic compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/22—Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a kind of method for improving silicon carbide micro-powder dispersiveness, comprise the following steps：(1) silicon carbide micro-powder and phthalimide are mixed to join in closed reactor, stir and slowly heat up；(2) when mixture temperature rises to 366 DEG C~380 DEG C in step (1), 20~50 minutes are incubated, then slow cooling adds the diethylenetriamine aqueous solution to 25 DEG C, and 10~20 minutes are stood after mixing；(4) mixed liquor is divided into two layers：Upper strata is modified silicon carbide micro-powder suspension, and lower floor is the silicon carbide micro-powder particle reunited；(5) the modified silicon carbide micro-powder suspension in upper strata is extracted out and filtered, precipitate washed with benzene, then dry modified silicon carbide micro-powder；Modification is used the silicon carbide micro-powder particle that lower floor reunites again after de-agglomerated.The present invention can preferably solve the scattered and scattered rear stable problem in silicon carbide micro-powder pulping process, obtain the silicon carbide micro-powder that high-performance meets practical application.
Description
Technical field
The present invention relates to a kind of method for improving silicon carbide micro-powder dispersiveness, the side that particularly silicon carbide micro-powder surface is modified
Method.
Background technology
Silicon carbide micro-powder is as abrasive material or filler in ceramic microabrasive tools, resin finish emery wheel and diamond wheel
In terms of have a wide range of applications.Because its excellent properties such as hardness is high, intensity is high, and anti-oxidant and anti-wear performance is very prominent
Deng the application of, silicon carbide micro-powder in terms of the non-grinding purposes such as refractory material, engineering ceramics, structural material also widely.Mesh
Before, silicon carbide micro-powder has become the main raw material(s) of development modern national defense, modern industry and high and new technology.Due to fine granularity
The silicon carbide micro-powder of (less than 10 μm) is in irregular shape, surface can it is larger, easily cause reunions, formation offspring makes superfine powder
The advantage of body is difficult to play.Not only dispersiveness and mobility do not reach moulded manufacturability in the pouring forming technology of ceramic abrasive tool
Can require, and also poor with the compatibility of bonding agent in the production of resin finish emery wheel, had a strong impact on finished product quality and
Excellent properties.
Therefore, surface modification is carried out to silicon carbide micro-powder, makes it have good dispersiveness, mobility, eliminates and reunite,
The silicon carbide micro-powder prepared in follow-up mist projection granulating can be configured to be uniformly dispersed, and stable and solid concentration is higher, viscosity is relatively low
Slurry.There is the shortcomings of energy consumption is big, particle dispersion is bad, production cycle length, product stability are poor in prior art.The present invention
Have the advantages that operating procedure is simple, it is high to wrap up uniform, stably dispersing, production efficiency.
The content of the invention
For deficiency of the prior art, the invention provides a kind of method for improving silicon carbide micro-powder dispersiveness.
The present invention is achieved through the following technical solutions, and its step is as follows：
(1) silicon carbide micro-powder and phthalimide are mixed to join in closed reactor, stir and slowly rise
The weight of temperature, wherein phthalimide is the 0.5%~2.0% of silicon carbide micro-powder weight；
(2) when mixture temperature rises to 366 DEG C~380 DEG C in step (1), 20~50 minutes are incubated, then slow drop
Temperature adds the diethylenetriamine aqueous solution to 25 DEG C, standing 10~20 minutes after stirring mixing, wherein the diethylenetriamine aqueous solution
Weight is 1~3 times of silicon carbide micro-powder weight；
(3) mixed liquor is divided into two layers：Upper strata is modified silicon carbide micro-powder suspension, and lower floor is micro- for the carborundum reunited
Powder；
(4) the modified silicon carbide micro-powder suspension in upper strata is extracted out and filtered, precipitate washed with benzene, it is then dry must be modified
Silicon carbide micro-powder afterwards；Modification is used the silicon carbide micro-powder particle that lower floor reunites again after de-agglomerated.
The weight concentration of diethylenetriamine is 0.5%~1.0% in the wherein described diethylenetriamine aqueous solution.
Wherein described reactor carries chuck and agitating device.
Wherein described cooling method is situated between to remove heating source and naturally cooling to less than 110 DEG C and be passed through to cool down again in chuck
Matter cools.
Beneficial effects of the present invention：
The present invention is heated up simultaneously by the way that silicon carbide micro-powder and phthalimide are stirred into mixing in closed reactor
Allow phthalimide distillation to be changed into gaseous state, be evenly distributed on around silicon carbide micro-powder, then slow cooling makes adjacent benzene two again
Carboximide is set in silicon carbide micro-powder surface, and diethylenetriamine reacts the larger band of generation molecular weight with phthalimide
There is the organic molecule of amido and carbonyl, in silicon carbide micro-powder space forming surface steric hindrance, hinder the interparticle group of silicon carbide micro-powder
It is poly-, improve the dispersiveness of silicon carbide micro-powder.The particle diameter reunited in silicon carbide micro-powder is larger, surface coated modification point
Son is insufficient to allow it to disperse, therefore is deposited in bottom.The silicon carbide micro-powder particle do not reunited is disperseed well.The present invention
The silicon carbide micro-powder surface parcel of processing is uniform, is firmly combined with, silicon carbide micro-powder particle diameter is evenly distributed, and dispersiveness and divides again
Scattered property has great raising.
The present invention has the advantages that operating procedure is simple, it is high to wrap up uniform, stably dispersing, production efficiency.
Specific implementation method
With reference to instantiation, the present invention will be described, and implementation below is merely to illustrate the present invention, and without
In limitation scope of the present invention.
A kind of embodiment 1, method for improving silicon carbide micro-powder dispersiveness, its step is as follows：
(1) silicon carbide micro-powder and phthalimide are mixed to join in closed reactor, stir and slowly rise
The weight of temperature, wherein phthalimide is the 0.5% of silicon carbide micro-powder weight；
(2) when mixture temperature rises to 366 DEG C~368 DEG C in step (1), 20 minutes are incubated, then slow cooling is extremely
25 DEG C, the diethylenetriamine aqueous solution is added, 10 minutes are stood after stirring mixing, wherein the weight of the diethylenetriamine aqueous solution is carbon
1.5 times of SiClx micropowder weight；
(3) mixed liquor is divided into two layers：Upper strata is modified silicon carbide micro-powder suspension, and lower floor is micro- for the carborundum reunited
Powder；
(4) the modified silicon carbide micro-powder suspension in upper strata is extracted out and filtered, precipitate washed with benzene, it is then dry must be modified
Silicon carbide micro-powder afterwards；Modification is used the silicon carbide micro-powder particle that lower floor reunites again after de-agglomerated.
The weight concentration of diethylenetriamine is 0.5% in the wherein described diethylenetriamine aqueous solution.
Wherein described reactor carries chuck and agitating device.
Wherein described cooling method is situated between to remove heating source and naturally cooling to less than 110 DEG C and be passed through to cool down again in chuck
Matter cools.
A kind of embodiment 2, method for improving silicon carbide micro-powder dispersiveness, its step is as follows：
(1) silicon carbide micro-powder and phthalimide are mixed to join in closed reactor, stir and slowly rise
The weight of temperature, wherein phthalimide is the 1.5% of silicon carbide micro-powder weight；
(2) when mixture temperature rises to 368 DEG C~370 DEG C in step (1), 25 minutes are incubated, then slow cooling is extremely
25 DEG C, the diethylenetriamine aqueous solution is added, 15 minutes are stood after stirring mixing, wherein the weight of the diethylenetriamine aqueous solution is carbon
2 times of SiClx micropowder weight；
(3) mixed liquor is divided into two layers：Upper strata is modified silicon carbide micro-powder suspension, and lower floor is micro- for the carborundum reunited
Powder；
(4) the modified silicon carbide micro-powder suspension in upper strata is extracted out and filtered, precipitate washed with benzene, it is then dry must be modified
Silicon carbide micro-powder afterwards；Modification is used the silicon carbide micro-powder particle that lower floor reunites again after de-agglomerated.
The weight concentration of diethylenetriamine is 0.8% in the wherein described diethylenetriamine aqueous solution.
Wherein described reactor carries chuck and agitating device.
Wherein described cooling method is situated between to remove heating source and naturally cooling to less than 110 DEG C and be passed through to cool down again in chuck
Matter cools.
A kind of embodiment 3, method for improving silicon carbide micro-powder dispersiveness, its step is as follows：
(1) silicon carbide micro-powder and phthalimide are mixed to join in closed reactor, stir and slowly rise
The weight of temperature, wherein phthalimide is the 2.0% of silicon carbide micro-powder weight；
(2) when mixture temperature rises to 375 DEG C~380 DEG C in step (1), 35 minutes are incubated, then slow cooling is extremely
25 DEG C, the diethylenetriamine aqueous solution is added, 20 minutes are stood after stirring mixing, wherein the weight of the diethylenetriamine aqueous solution is carbon
3 times of SiClx micropowder weight；
(3) mixed liquor is divided into two layers：Upper strata is modified silicon carbide micro-powder suspension, and lower floor is micro- for the carborundum reunited
Powder；
(4) the modified silicon carbide micro-powder suspension in upper strata is extracted out and filtered, precipitate washed with benzene, it is then dry must be modified
Silicon carbide micro-powder afterwards；Modification is used the silicon carbide micro-powder particle that lower floor reunites again after de-agglomerated.
The weight concentration of diethylenetriamine is 1.0% in the wherein described diethylenetriamine aqueous solution.
Wherein described reactor carries chuck and agitating device.
Wherein described cooling method is situated between to remove heating source and naturally cooling to less than 110 DEG C and be passed through to cool down again in chuck
Matter cools.
Claims (4)
1. a kind of method for improving silicon carbide micro-powder dispersiveness, it is characterised in that：Comprise the following steps：
(1) silicon carbide micro-powder and phthalimide are mixed to join in closed reactor, stir and slowly heat up, its
The weight of middle phthalimide is the 0.5%~2.0% of silicon carbide micro-powder weight；
(2) when mixture temperature rises to 366 DEG C~380 DEG C in step (1), 20~50 minutes are incubated, then slow cooling is extremely
25 DEG C, the diethylenetriamine aqueous solution is added, 10~20 minutes are stood after stirring mixing, wherein the weight of the diethylenetriamine aqueous solution
For 1~3 times of silicon carbide micro-powder weight；
(3) mixed liquor is divided into two layers：Upper strata is modified silicon carbide micro-powder suspension, and lower floor is the silicon carbide micro-powder grain reunited
Son；
(4) the modified silicon carbide micro-powder suspension in upper strata is extracted out and filtered, precipitate washed with benzene is then modifiedly dry
Silicon carbide micro-powder；Modification is used the silicon carbide micro-powder particle that lower floor reunites again after de-agglomerated.
2. a kind of method for improving silicon carbide micro-powder dispersiveness according to claim 1, it is characterised in that：Described diethyl
The mass concentration of diethylenetriamine is 0.5%~1.0% in the amine aqueous solution of alkene three.
3. a kind of method for improving silicon carbide micro-powder dispersiveness according to claim 1, it is characterised in that：Described reaction
Device carries chuck and agitating device.
4. a kind of method of raising silicon carbide micro-powder dispersiveness according to claim 1 or 3, it is characterised in that：Described
Cooling method for remove heating source naturally cool to less than 110 DEG C be passed through again in chuck cooling medium cool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710460433.9A CN107141842B (en) | 2017-06-17 | 2017-06-17 | A method of improving silicon carbide micro-powder dispersibility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710460433.9A CN107141842B (en) | 2017-06-17 | 2017-06-17 | A method of improving silicon carbide micro-powder dispersibility |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107141842A true CN107141842A (en) | 2017-09-08 |
| CN107141842B CN107141842B (en) | 2018-11-06 |
Family
ID=59781655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710460433.9A Active CN107141842B (en) | 2017-06-17 | 2017-06-17 | A method of improving silicon carbide micro-powder dispersibility |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107141842B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3914312A (en) * | 1973-02-07 | 1975-10-21 | Centre Etd Ind Pharma | Process for the preparation of propargylamine |
| SU1142473A1 (en) * | 1983-03-03 | 1985-02-28 | Физико-химический институт АН УССР | Method of obtaining 2,2'-diphthalimidoethylamine |
| CN101230211A (en) * | 2007-12-27 | 2008-07-30 | 同济大学 | Method for preparing small-molecule imide modified carbon nano-tube |
| CN101531373A (en) * | 2009-04-13 | 2009-09-16 | 四川大学 | Active organo montmorillonite and preparation method thereof |
| CN101948317A (en) * | 2010-09-17 | 2011-01-19 | 青州宇信陶瓷材料有限公司 | Method for preparing silicon carbide micro-powder modifying agent |
| CN102923706A (en) * | 2012-11-29 | 2013-02-13 | 江苏乐园新材料集团有限公司 | Preparation method of silicon carbide micro powder capable of improving dispersity |
| CN103833378A (en) * | 2014-01-27 | 2014-06-04 | 连云港海蓝研磨材料有限公司 | Surface modification method of silicon carbide micropowder |
| CN104610780A (en) * | 2015-01-12 | 2015-05-13 | 中国科学院宁波材料技术与工程研究所 | Modification method for silicon carbide particles |
| CN105645968A (en) * | 2016-03-03 | 2016-06-08 | 南京工业大学 | Preparation method of ultramicro silicon carbide powder high-performance size |
| CN105884377A (en) * | 2014-12-09 | 2016-08-24 | 任海涛 | Method for carrying out surface modification on silicon carbide powder by silane coupling agent |
-
2017
- 2017-06-17 CN CN201710460433.9A patent/CN107141842B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3914312A (en) * | 1973-02-07 | 1975-10-21 | Centre Etd Ind Pharma | Process for the preparation of propargylamine |
| SU1142473A1 (en) * | 1983-03-03 | 1985-02-28 | Физико-химический институт АН УССР | Method of obtaining 2,2'-diphthalimidoethylamine |
| CN101230211A (en) * | 2007-12-27 | 2008-07-30 | 同济大学 | Method for preparing small-molecule imide modified carbon nano-tube |
| CN101531373A (en) * | 2009-04-13 | 2009-09-16 | 四川大学 | Active organo montmorillonite and preparation method thereof |
| CN101948317A (en) * | 2010-09-17 | 2011-01-19 | 青州宇信陶瓷材料有限公司 | Method for preparing silicon carbide micro-powder modifying agent |
| CN102923706A (en) * | 2012-11-29 | 2013-02-13 | 江苏乐园新材料集团有限公司 | Preparation method of silicon carbide micro powder capable of improving dispersity |
| CN103833378A (en) * | 2014-01-27 | 2014-06-04 | 连云港海蓝研磨材料有限公司 | Surface modification method of silicon carbide micropowder |
| CN105884377A (en) * | 2014-12-09 | 2016-08-24 | 任海涛 | Method for carrying out surface modification on silicon carbide powder by silane coupling agent |
| CN104610780A (en) * | 2015-01-12 | 2015-05-13 | 中国科学院宁波材料技术与工程研究所 | Modification method for silicon carbide particles |
| CN105645968A (en) * | 2016-03-03 | 2016-06-08 | 南京工业大学 | Preparation method of ultramicro silicon carbide powder high-performance size |
Non-Patent Citations (2)
| Title |
|---|
| E. V. GANIN ET AL.: "REACTION OF PHTHALIMIDE WITH DIETHYLENE TRIAMINE AND TRIETHYLENE TETRAMINE", 《CHEMISTRY FO HETEROCYCLIC COMPOUNDS》 * |
| 黄文信等: "碳化硅粉体表面改性研究进展", 《中国非金属矿工业导刊》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107141842B (en) | 2018-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103468030A (en) | Preparation method of high-dispersity silicon dioxide | |
| CN103205001A (en) | Dispersion method for filling material in rubber solution | |
| CN105153750A (en) | Wear-resistant surface modified calcium carbonate filler and preparation method thereof | |
| CN106927464A (en) | A kind of method of modifying of silicon carbide micro-powder | |
| CN109382193A (en) | A kind of preparation method of superfine powdery material | |
| CN107141842B (en) | A method of improving silicon carbide micro-powder dispersibility | |
| CN108296412A (en) | A kind of inorganic precoated sand and its preparation process | |
| CN113666380A (en) | Preparation method of spherical silicon dioxide | |
| CN104031430B (en) | A kind ofly improve dispersed modified nano-titanium dioxide and preparation method thereof | |
| CN106216660B (en) | A kind of good diamond abrasive tool carcass material of wearability and preparation method | |
| CN113321929A (en) | Carbon black master batch for nylon 6 civil filament fiber and preparation method and application thereof | |
| CN106190091A (en) | A kind of waterproofing type proppant of oil thoroughly and preparation method thereof | |
| CN105038369A (en) | Modified calcium carbonate filler for paint and preparation method thereof | |
| CN108015271A (en) | A kind of 3D printing high strength and modulus composite particulate material preparation method | |
| CN108239304A (en) | A kind of method for preparing modified rubber special graphite alkene-zinc oxide composite assistant | |
| CN102489218A (en) | Method for granulating and forming silicon carbide fine powder and silicon carbide granule | |
| CN104031429B (en) | A kind of surface-modified nano titanium dioxide with antiageing effect and preparation method thereof | |
| CN106189186A (en) | The 3D printing compound polyurethane material that a kind of Graphene is modified | |
| CN107955327B (en) | Phenolic resin abrasive taking modified silicon micropowder as base material | |
| CN108264651B (en) | Process for the preparation of substantially spherical reaction complexes of sulfur-containing silanes with carbon black and products obtained by said process | |
| CN101614973A (en) | A kind of powdered black ink and preparation method thereof | |
| CN108838386A (en) | A kind of carbide alloy mixture preparation method using modified waxes forming agent | |
| CN107879344A (en) | A kind of production process of silicon carbide as electrical material | |
| CN105006268B (en) | A kind of preparation method of solid phase graphene conductive dispersion | |
| CN113199415B (en) | Artificial stone mirror polishing grinding tool and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A Method for Improving the Dispersion of Silicon Carbide Powders Effective date of registration: 20230320 Granted publication date: 20181106 Pledgee: Bank of China Limited by Share Ltd. Zhengzhou high tech Development Zone Branch Pledgor: ZHENGZHOU XILIKANG NEW MATERIAL Co.,Ltd. Registration number: Y2023980035478 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20181106 Pledgee: Bank of China Limited by Share Ltd. Zhengzhou high tech Development Zone Branch Pledgor: ZHENGZHOU XILIKANG NEW MATERIAL Co.,Ltd. Registration number: Y2023980035478 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A method to improve the dispersibility of silicon carbide micro powder Granted publication date: 20181106 Pledgee: Bank of China Limited by Share Ltd. Xinzheng branch Pledgor: ZHENGZHOU XILIKANG NEW MATERIAL Co.,Ltd. Registration number: Y2024980012327 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |