CN104043826B - Aluminum powder surface hydration processing method and application of aluminum powder in preparing Al@Ag nuclear shell composite particle conductive and electromagnetic shielding filler - Google Patents
Aluminum powder surface hydration processing method and application of aluminum powder in preparing Al@Ag nuclear shell composite particle conductive and electromagnetic shielding filler Download PDFInfo
- Publication number
- CN104043826B CN104043826B CN201410311447.0A CN201410311447A CN104043826B CN 104043826 B CN104043826 B CN 104043826B CN 201410311447 A CN201410311447 A CN 201410311447A CN 104043826 B CN104043826 B CN 104043826B
- Authority
- CN
- China
- Prior art keywords
- aluminum powder
- aluminium powder
- processing method
- electromagnetic shielding
- shell composite
- 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.)
- Active
Links
Abstract
The invention relates to an aluminum powder surface hydration processing method. The aluminum powder surface hydration processing method comprises the following steps that 1, the surface of aluminum powder is washed, filtered in a suction mode and dried; 2, the washed aluminum powder is placed into a solution with the volume ratio of water to ethyl alcohol being 3: 1 for hydroxylation processing; 3, a silane coupling agent is added, sulfhydrylation decoration is conducted on the aluminum powder, and filtering, washing and drying are conducted, so that the aluminum powder obtained after sulfhydrylation decoration is obtained. The invention further provides an application of the aluminum powder obtained according to the aluminum powder surface hydration processing method in preparing Al@Ag nuclear shell composite particle conductive and electromagnetic shielding filler. The aluminum powder serves as a raw material for preparing the conductive and electromagnetic shielding filler. The sulfydryl content of the surface of the processed aluminum powder is high and the processing method is simple and efficient; prepared Al@Ag nuclear shell composite particles have the advantages of being even and dense in silver shell layer, low in silver content, low in cost and the like, and have important application prospect in the fields of conductive and electromagnetic shielding composite materials and the like.
Description
Technical field
The present invention relates to conductive and electromagnetic shielding composite material field.
Background technology
Surface contracted payment Core-shell Composite Particles functional stuffing can overcome the metal packings such as traditional one pack system silver, copper and nickel to exist
Density is big, high cost, difficult dispersed in polymeric matrix, easily causes electrical property, mechanical property and the resistance to ring of composite
The problems such as border poor performance, therefore it is widely used in current high-performance conductive and electromagnetic protection composite.For al@
For ag Core-shell Composite Particles, it is simultaneously with aluminium and silver-colored various good characteristics.Aluminium is lighter, and its density is only 2.72g/
cm3, be approximately copper density 1/3rd.Its electric conductivity and thermal conductivity preferably, are only second to silver, copper and gold, occupy the 4th, this
Outward, the surface energy of aluminium generates one layer of fine and close aluminum oxide film, can effectively completely cut off the contact that aluminium is with oxygen, prevents its oxidation, because
This its there is excellent environmental suitability.
At present with regard to the document of al@ag compound particle, it is initially using two-step method it may be assumed that first removing aluminium surface oxide layer, then
Plating last layer copper transition zone, finally carrying out chemical silvering, such as: the proposition such as Zhang Zhen China " silver coated aluminum powder technical study " and plating with
Cover with paint, lacquer, colour wash, etc. " (2007,26 (1): 23-25).There is complicated process of preparation in this method, covered effect is not fine and close, and compound particle
Silver layer is to be combined by way of physical absorption with aluminium kernel, causes the problems such as between core and shell, adhesion is weak.Ask for above-mentioned
Topic wencai wang etc. proposes " dopamine-induced surface functionalization for the
preparation of al–ag bimetallic microspheres《journal of the electrochemical
Society " (2011,158 (4): d228-d233) ", its processing step is aluminium surface to be carried out with dopamine modification, by many
Amino on bar amine adsorbs silver ion and realizes in-situ chemical reduction silver.Although solving silver-colored nucleus to deposit in aluminium powder surface orientation
Technical problem, but due to dopamine polymer layer will be formed on aluminium powder surface, therefore cause whole reaction time longer, cost is relatively
High.Cn102757670a and Wen Jianghong (the shell structurre regulation and control of silver-colored alclad Core-shell Composite Particles and performance study: [master's degree
Paper]. Wuhan: Wuhan University of Technology, 2013) propose on the premise of not needing to remove aluminium surface oxide layer, first in aluminium powder
Surface carries out sulfhydrylation modification it is established that Nano silver grain orientated deposition, in the technical foundation on aluminium powder surface, has finally given silver
Shell densification and the strong al@ag Core-shell Composite Particles of nucleocapsid adhesion.This method need not be using expensive special chemical reagent, one
Determine to reduce preparation cost in degree.However, the al@ag Core-shell Composite Particles that both the above method obtains still suffer from silver content relatively
High problem.For example: when the silver content of this Core-shell Composite Particles is less than 8%, its volume filling point in polymeric matrix simultaneously
When number is only 42.5%, the specific insulation difficult to reach 10 of composite-3The ω cm order of magnitude.The present invention is by aluminium powder surface
Carry out hydroxylating process, improve aluminium powder density of surface hydroxyl, be that silane coupler molecular linkage provides more on aluminium powder surface
Many avtive spots, thus improve sulfhydryl content after aluminium powder surface chemical modification；Pass through control surface hydroxylating simultaneously and process temperature
Degree and time control aluminium powder surface topography it is ensured that its pattern try one's best constant under conditions of, liquid phase chemical reduction silver during, lead to
Cross the nucleation quantity improving silver-colored nucleus, obtain low silver content, the al ag Core-shell Composite Particles of high conductivity.
Content of the invention
The technical problem to be solved there is provided a kind of aluminium powder surface hydration processing method and its in preparation al@
Application in ag Core-shell Composite Particles conduction and electromagnetic shielding filler, solves existing preparation al@ag Core-shell Composite Particles and there is silver
Consumption is big, high cost, or the problems such as complex process.
The technical solution used in the present invention is to design a kind of aluminium powder surface hydration processing method, comprise the following steps: step
1st, aluminium powder surface is carried out, suction filtration, drying；Step 2, the volume ratio that the aluminium powder after cleaning is placed in water and ethanol are 3:1
Solution in carry out hydroxylating process；Step 3, add silane coupler, above-mentioned aluminium powder is carried out with sulfhydrylation modification, suction filtration, wash
Wash, be dried；Obtain the aluminium powder of sulfhydrylation modification.
Wherein, in step 2, the temperature of solution is 70-75 DEG C.
In step 2, the aluminium powder time that hydroxylating is processed in the solution is 2-5 min.
Present invention also offers a kind of aluminium powder being obtained according to above-mentioned surface hydration processing method is in preparation al@ag nucleocapsid again
Close the application in particle conductive and electromagnetic shielding filler, above-mentioned aluminium powder can be used as to prepare such conduction and electromagnetic shielding filler
Raw material.
The present invention compared with prior art has a following major advantage:
First, silver-colored shell is fine and close and thin, silver content is low, low cost.The present invention is mainly by carrying out hydroxyl to aluminium powder surface
Baseization is processed, and improves aluminium powder density of surface hydroxyl, is that silane coupler molecular linkage provides on aluminium powder surface and more lives
Property site, thus improving sulfhydryl content after aluminium powder surface chemical modification, simultaneously pass through control surface hydroxylating treatment temperature and when
Between control aluminium powder surface topography it is ensured that its pattern try one's best constant under conditions of, liquid phase chemical reduction silver during, by improve
The Nucleation of silver-colored nucleus, obtains low silver content, the al@ag Core-shell Composite Particles of high conductivity.The al ag nucleocapsid of this method preparation is multiple
Close particle and there is good electric conductivity, be expected to there is important application prospect conductive with fields such as electromagnetic shielding composite materials.
Second, being easy to mass produce.Preparation technology of the present invention, raw material composition are simple, and short preparation period, are easy to promote
Application.
Specific embodiment
A kind of aluminium powder surface hydration processing method proposed by the present invention, comprises the following steps:
Step 1, aluminium powder surface is carried out, suction filtration, drying；
Step 2, the aluminium powder after cleaning is placed in the volume ratio of the water and ethanol solution for 3:1 and carries out hydroxylating process；
Step 3, addition silane coupler, carry out sulfhydrylation modification, suction filtration, washing, drying to above-mentioned aluminium powder；Obtain sulfydryl
Change the aluminium powder modified.
Wherein, in step 2, the temperature of solution is 70-75 DEG C, and the aluminium powder time that hydroxylating is processed in this solution is 2-5
min.In step 3, silane coupler is γ-mercapto-propyl trimethoxy silane, and after adding silane coupler, the reaction time is 4
h.
Present invention also offers a kind of aluminium powder being obtained according to above-mentioned surface hydration processing method is in preparation al@ag nucleocapsid again
Close the application in particle conductive and electromagnetic shielding filler, above-mentioned aluminium powder can be used as to prepare such conduction and electromagnetic shielding filler
Raw material.
With reference to instantiation, the invention will be further described.
First embodiment
Comprise the following steps: (1) to add 40g aluminium powder, stirring in the first embodiment in 400ml deionized water, place 30 points
Clock, outwells supernatant, repeatedly cleans, and to supernatant no floating thing, suction filtration, vacuum drying is stand-by；
Mixed solution 400 ml for 3:1 for the volume ratio of step 2, water intaking and ethanol is in there-necked flask, and is placed on
Heat in temperature-regulated oil bath, after controlling temperature to be 72 DEG C, add above-mentioned aluminium powder, stir 3 min；
Step 3, add 30 ml γ-mercapto-propyl trimethoxy silane, be stirred until homogeneous, keep solution temperature 72
DEG C, after reaction 4h hour, filter, vacuum drying is stand-by；
Step 4, preparation reducing solution, take 22.5 g glucose, 2 g sodium potassium tartrate tetrahydrates and 500 ml deionized waters, boil 5
Min, is cooled to room temperature stand-by；Take 200 ml reducing solutions, be subsequently adding 10 g polyvinylpyrrolidones (pvp), add 16 g tables
Aluminium powder after the chemical modification of face, stirs and is made into reduction mixture；
Step 5, it is slowly added dropwise silver ammino solution 60 ml in mixed liquor, silver ammino solution proportioning used: 8.5 wt %
agno3, 5.5 wt % nh3•h2O, 3 wt % naoh, under magnetic stirrer, room temperature reaction 1h after completion of dropping, quiet
Put, settle, filter；
Step 6, cleaned with running water 4-5 time, 3-5 h is dried in 60 DEG C of vacuum drying chambers, obtain al@ag nucleocapsid multiple
Close particle.
Second embodiment
Comprise the following steps: (1) to add 40g aluminium powder, stirring in a second embodiment in 400ml deionized water, place 30 points
Clock, outwells supernatant, repeatedly cleans, and to supernatant no floating thing, suction filtration, vacuum drying is stand-by；
Mixed solution 400 ml for 3:1 for the volume ratio of step 2, water intaking and ethanol is in there-necked flask, and is placed on
Heat in temperature-regulated oil bath, after controlling temperature to be 74 DEG C, add above-mentioned aluminium powder, stir 2 min；
Step 3, add 30 ml γ-mercapto-propyl trimethoxy silane, be stirred until homogeneous, keep solution temperature 74
DEG C, after reaction 4h hour, filter, vacuum drying is stand-by；
Step 4, preparation reducing solution, take 22.5 g glucose, 2 g sodium potassium tartrate tetrahydrates and 500 ml deionized waters, boil 5
Min, is cooled to room temperature stand-by；Take 200 ml reducing solutions, be subsequently adding 10 g polyvinylpyrrolidones (pvp), add 16 g tables
Aluminium powder after the chemical modification of face, stirs and is made into reduction mixture；
Step 5, it is slowly added dropwise silver ammino solution 60 ml in mixed liquor, silver ammino solution proportioning used: 8.5 wt %
agno3, 5.5 wt % nh3•h2O, 3 wt % naoh, 3 wt % naoh, under magnetic stirrer, completion of dropping rear chamber
Temperature reaction 1h, standing, sedimentation, filtration；
Step 6, cleaned with running water 4-5 time, 3-5 h is dried in 60 DEG C of vacuum drying chambers, obtain al@ag nucleocapsid multiple
Close particle.
3rd embodiment
Comprise the following steps: (1) to add 40g aluminium powder, stirring in the third embodiment in 400ml deionized water, place 30 points
Clock, outwells supernatant, repeatedly cleans, and to supernatant no floating thing, suction filtration, vacuum drying is stand-by；
Mixed solution 400 ml for 3:1 for the volume ratio of step 2, water intaking and ethanol is in there-necked flask, and is placed on
Heat in temperature-regulated oil bath, after controlling temperature to be 75 DEG C, add above-mentioned aluminium powder, stir 2 min；
Step 3, add 30 ml γ-mercapto-propyl trimethoxy silane, be stirred until homogeneous, keep solution temperature 75
DEG C, after reaction 4h hour, filter, vacuum drying is stand-by；
Step 4, preparation reducing solution, take 22.5 g glucose, 2 g sodium potassium tartrate tetrahydrates and 500 ml deionized waters, boil 5
Min, is cooled to room temperature stand-by；Take 200 ml reducing solutions, be subsequently adding 10 g polyvinylpyrrolidones (pvp), add 16 g tables
Aluminium powder after the chemical modification of face, stirs and is made into reduction mixture；
Step 5, it is slowly added dropwise silver ammino solution 60 ml in mixed liquor, silver ammino solution proportioning used: 8.5 wt %
agno3, 5.5 wt % nh3•h2O, 3 wt % naoh, 3 wt % naoh, under magnetic stirrer, completion of dropping rear chamber
Temperature reaction 1h, standing, sedimentation, filtration；
Step 6, cleaned with running water 4-5 time, 3-5 h is dried in 60 DEG C of vacuum drying chambers, obtain al@ag nucleocapsid multiple
Close particle.
Fourth embodiment
Comprise the following steps: (1) to add 40g aluminium powder, stirring in the fourth embodiment in 400ml deionized water, place 30 points
Clock, outwells supernatant, repeatedly cleans, and to supernatant no floating thing, suction filtration, vacuum drying is stand-by；
Mixed solution 400 ml for 3:1 for the volume ratio of step 2, water intaking and ethanol is in there-necked flask, and is placed on
Heat in temperature-regulated oil bath, after controlling temperature to be 70 DEG C, add above-mentioned aluminium powder, stir 5 min；
Step 3, add 30 ml γ-mercapto-propyl trimethoxy silane, be stirred until homogeneous, keep solution temperature 70
DEG C, after reaction 4h hour, filter, vacuum drying is stand-by；
Step 4, preparation reducing solution, take 22.5 g glucose, 2 g sodium potassium tartrate tetrahydrates and 500 ml deionized waters, boil 5
Min, is cooled to room temperature stand-by；Take 200 ml reducing solutions, be subsequently adding 10 g polyvinylpyrrolidones (pvp), add 16 g tables
Aluminium powder after the chemical modification of face, stirs and is made into reduction mixture；
Step 5, it is slowly added dropwise silver ammino solution 60 ml in mixed liquor, silver ammino solution proportioning used: 8.5 wt %
agno3, 5.5 wt % nh3•h2O, 3 wt % naoh, 3 wt % naoh, under magnetic stirrer, completion of dropping rear chamber
Temperature reaction 1h, standing, sedimentation, filtration；
Step 6, cleaned with running water 4-5 time, 3-5 h is dried in 60 DEG C of vacuum drying chambers, obtain al@ag nucleocapsid and be combined
Particle.
5th embodiment
Comprise the following steps: (1) to add 40g aluminium powder, stirring in the 5th embodiment in 400ml deionized water, place 30 points
Clock, outwells supernatant, repeatedly cleans, and to supernatant no floating thing, suction filtration, vacuum drying is stand-by；
Mixed solution 400 ml for 3:1 for the volume ratio of step 2, water intaking and ethanol is in there-necked flask, and is placed on
Heat in temperature-regulated oil bath, after controlling temperature to be 71 DEG C, add above-mentioned aluminium powder, stir 4 min；
Step 3, add 30 ml γ-mercapto-propyl trimethoxy silane, be stirred until homogeneous, keep solution temperature 71
DEG C, after reaction 4h hour, filter, vacuum drying is stand-by；
Step 4, preparation reducing solution, take 22.5 g glucose, 2 g sodium potassium tartrate tetrahydrates and 500 ml deionized waters, boil 5
Min, is cooled to room temperature stand-by；Take 200 ml reducing solutions, be subsequently adding 10 g polyvinylpyrrolidones (pvp), add 16 g tables
Aluminium powder after the chemical modification of face, stirs and is made into reduction mixture；
Step 5, it is slowly added dropwise silver ammino solution 60 ml in mixed liquor, silver ammino solution proportioning used: 8.5 wt %
agno3, 5.5 wt % nh3•h2O, 3 wt % naoh, 3 wt % naoh, under magnetic stirrer, completion of dropping rear chamber
Temperature reaction 1h, standing, sedimentation, filtration；
Step 6, cleaned with running water 4-5 time, 3-5 h is dried in 60 DEG C of vacuum drying chambers, obtain al@ag nucleocapsid multiple
Close particle.
Following table is the conducting resinl volume resistance of the al ag Core-shell Composite Particles drawing in the first to five embodiment.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (2)
1. a kind of aluminium powder surface hydration processing method is it is characterised in that comprise the following steps:
Step 1, aluminium powder surface is carried out, suction filtration, drying；
Step 2, the aluminium powder after cleaning is placed in the volume ratio of the water and ethanol solution for 3:1 and carries out hydroxylating process；
Step 3, addition silane coupler, carry out sulfhydrylation modification, suction filtration, washing, drying to above-mentioned aluminium powder；Obtain sulfhydrylation to repair
The aluminium powder of decorations；
In step 2, the temperature of solution is 70-75 DEG C；
In step 2, the aluminium powder time that hydroxylating is processed in the solution is 2-5min；
After adding silane coupler in step 3, the reaction time is 4h.
2. the aluminium powder that a kind of method according to claim 1 obtains is in preparation al@ag Core-shell Composite Particles conduction and electromagnetic screen
Cover the application in filler it is characterised in that: by described aluminium powder be used as preparation al@ag Core-shell Composite Particles conduction fill out with electromagnetic shielding
The raw material of material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410311447.0A CN104043826B (en) | 2014-07-02 | 2014-07-02 | Aluminum powder surface hydration processing method and application of aluminum powder in preparing Al@Ag nuclear shell composite particle conductive and electromagnetic shielding filler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410311447.0A CN104043826B (en) | 2014-07-02 | 2014-07-02 | Aluminum powder surface hydration processing method and application of aluminum powder in preparing Al@Ag nuclear shell composite particle conductive and electromagnetic shielding filler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104043826A CN104043826A (en) | 2014-09-17 |
| CN104043826B true CN104043826B (en) | 2017-01-18 |
Family
ID=51497492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410311447.0A Active CN104043826B (en) | 2014-07-02 | 2014-07-02 | Aluminum powder surface hydration processing method and application of aluminum powder in preparing Al@Ag nuclear shell composite particle conductive and electromagnetic shielding filler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104043826B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107414072A (en) * | 2017-07-03 | 2017-12-01 | 湖南宁乡吉唯信金属粉体有限公司 | A kind of preparation method of alumina-coated aluminium powder |
| CN108326293B (en) * | 2018-01-11 | 2021-03-09 | 宁波广新纳米材料有限公司 | Method for producing silver-coated nickel powder |
| CN111426732A (en) * | 2020-04-03 | 2020-07-17 | 中国船舶重工集团公司第七二五研究所 | Preparation method of AgX @ Ag core-shell electrode material |
| CN112264613B (en) * | 2020-10-20 | 2023-02-03 | 西安工程大学 | Preparation method of nickel-coated aluminum powder for electromagnetic shielding |
| CN114700489B (en) * | 2022-06-07 | 2022-08-12 | 天津德恒永裕金属表面处理有限公司 | Preparation process of silver-coated aluminum powder and silver-coated aluminum powder |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5336234B2 (en) * | 2009-03-19 | 2013-11-06 | 旭化成ケミカルズ株式会社 | Composite particle carrier, method for producing the same, and method for producing carboxylic acid ester |
| CN101633798B (en) * | 2009-08-17 | 2012-08-29 | 昆明理工大学 | Preparation method of aluminum paste for water paint |
| CN102581272B (en) * | 2012-02-06 | 2014-01-29 | 西安近代化学研究所 | Method for preparing nanometer aluminum composite powder coated with nitro-cotton |
| CN102757670B (en) * | 2012-07-12 | 2014-02-19 | 武汉理工大学 | Preparation method of conductive filler |
-
2014
- 2014-07-02 CN CN201410311447.0A patent/CN104043826B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104043826A (en) | 2014-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104043826B (en) | Aluminum powder surface hydration processing method and application of aluminum powder in preparing Al@Ag nuclear shell composite particle conductive and electromagnetic shielding filler | |
| CN106011809B (en) | A method of preparing the composite material of coated with silver on surface by catechol-polyamines | |
| CN105618785B (en) | A kind of preparation method of copper/silver nuclear shell structure nano line | |
| CN101054483B (en) | Silvering graphite and preparation method thereof | |
| CN103341643B (en) | The complex reducing agent liquid phase preparation process of coated with silver on surface shell conductive composite particle | |
| CN101182127B (en) | Method for preparing electric filler and uses thereof | |
| CN106148926B (en) | Silver-coated copper powder and preparation method thereof | |
| CN109423637B (en) | Preparation method of high-conductivity material | |
| CN102321879A (en) | Method for improving appearance and conductive performance of conductive microspheres | |
| CN102381844A (en) | Method for modifying hollow glass microspheres by chemical precipitation process | |
| CN101712076A (en) | Preparation method as well as application of novel electromagnetic shielding filler | |
| CN103691937B (en) | A kind of method preparing nickel bag graphite compound particle | |
| CN1974841A (en) | Core-shell type composite conductive Fe-Ag filler and its prepn process | |
| CN106366409A (en) | Ultra-high molecular weight polyethylene-graphene-nickel composite material and preparation method | |
| CN109957144A (en) | A kind of preparation method of electroplate conductive filler | |
| CN110117732A (en) | A method of MgO protective layer is coated on cenosphere surface | |
| CN102010136A (en) | Chemical plating Ni-P alloy technology of glass micro beads | |
| CN103817323A (en) | Nickel-coated graphite electric conduction powder used for electric conduction rubber and manufacturing method thereof | |
| CN112744870A (en) | Aluminum oxide-carbonyl iron microsphere wave absorbing agent and preparation method thereof | |
| CN1974840A (en) | Composition for chemical Cu plating onto timber surface and the chemical Cu plating process | |
| CN102757670B (en) | Preparation method of conductive filler | |
| CN101979708B (en) | Method for preparing carbon nano tube silvered acrylic acid series electromagnetic shielding coating | |
| CN108461172A (en) | A kind of conducting particles and its preparation method and application | |
| CN103871540B (en) | A kind of nickel bag glass conductive powder body and preparation method thereof for conductive rubber | |
| CN105129773B (en) | Graphite particle of sulfhydrylation modification and its preparation method and application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Gang Inventor after: Zhao Liying Inventor after: Guan Yuyi Inventor after: Wu Qingjun Inventor after: Liao Yingfeng Inventor before: Wang Yilong Inventor before: Shi Tao Inventor before: Zhao Suling Inventor before: Guan Jianguo Inventor before: Wang Gang |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG YILONG SHI TAO ZHAO SULING GUAN JIANGUO WANG GANG TO: WANG GANG ZHAO LIYING GUAN YUYI WU QINGJUN LIAO YINGFENG |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 528251 one of (office building) and one of (workshop I) (residence declaration) No. 6, Bojin Road, hardware industrial zone, Danzao Town, Nanhai District, Foshan City, Guangdong Province Patentee after: Guangdong xinjingang Technology Co.,Ltd. Address before: 528200 office building and workshop, No. 6, Bojin Road, hardware industrial zone, Danzao Town, Nanhai District, Foshan City, Guangdong Province Patentee before: Guangdong Xinjinggang New Material Technology Co.,Ltd. |
|
| CP03 | Change of name, title or address |