CN104589575A - Ceramic and plastic composite structure and manufacturing method thereof - Google Patents
Ceramic and plastic composite structure and manufacturing method thereof Download PDFInfo
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- CN104589575A CN104589575A CN201410710858.7A CN201410710858A CN104589575A CN 104589575 A CN104589575 A CN 104589575A CN 201410710858 A CN201410710858 A CN 201410710858A CN 104589575 A CN104589575 A CN 104589575A
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Abstract
The invention discloses a ceramic and plastic composite structure and a manufacturing method thereof, wherein the manufacturing method comprises the following steps: mixing a ceramic powder with a plastic-based auxiliary agent, and forming a slurry suitable for injection, wherein the plastic-based auxiliary agent comprises 3-7% by weight of a surfactant, 55-70% by weight of wax and/or grease, and 25-42% by weight of a thermoplastic plastic; carrying out injection molding on the slurry into a desired ceramic structural member shape; degreasing the ceramic structural member, removing the plastic-based auxiliary agent, and then sintering to obtain a ceramic structural member having a porous structure; and putting the ceramic structural member having the porous structure into a mold, carrying out injection molding, and thus obtaining the ceramic and plastic composite structure. The invention also discloses the plastic-based auxiliary agent used for the manufacturing method. The obtained composite structure is stable and reliable and is good in wear resistance.
Description
Technical field
The present invention relates to a kind of pottery and plastic composite structure and preparation method thereof.
Background technology
Along with the fast development of 3C Product, the pursuit of people to 3C Product is more and more higher, particularly for the outward appearance of product.From initial plastics surface structure part hardware till now, but people pursue higher fashionable appearance sense now, and originally the metal appearance structural member of fashion cannot meet require that of people.Pottery surface structure part will bring higher fashion life sense, but due to ceramic hard and crisp special nature own, be not suitable for the application of some structures.How pottery and plastic structural part well to be combined, be the difficult problem that prior art faces.
Summary of the invention
Main purpose of the present invention is for the deficiencies in the prior art, provides a kind of pottery with plastic composite structure, its preparation method and moulds base auxiliary agent.
For achieving the above object, the present invention is by the following technical solutions:
A preparation method for pottery and plastic composite structure, comprises the following steps:
A. by ceramic powders with mould base auxiliary agent and mix and formed and be applicable to the slurry injected, the wherein said thermoplastic plastic moulding base auxiliary agent and comprise the surfactant of 3-7% by weight, the wax of 55-70% and/or grease and 25-42%;
B. be required ceramic structures shape by slurry injection moulding;
C. carry out degreasing to described ceramic structures, after moulding base auxiliary agent described in deviating from, sintering obtains the ceramic structures with loose structure;
D. the ceramic structures with loose structure is put into mould injection moulding, obtain the composite construction of pottery and plastics.
Further:
Described base auxiliary agent of moulding is the polypropylene comprising the stearic acid of 3-7% by weight, the paraffin of 20-25%, the Brazil wax of 35-40%, the polyethylene of 20-30% and 5-10%.
Described ceramic powders is aluminium oxide or zirconia ceramics material, powder diameter scope 1-10 μm.
Described wax and/or grease are selected from paraffin, microwax, Brazil wax, peanut oil, animal fat, described thermoplastic plastic is selected from polyethylene, polypropylene, poly-cerinic acid vinyl acetate, polyacrylate, polyformaldehyde, Merlon, and described surfactant is selected from stearic acid, oleic acid.
In step c, sintering temperature is the 80-90% of material melting point, and preferably, obtain ceramic structures for high-purity type aluminium oxide ceramics, sintering temperature is 1650-1990 DEG C, and temperature retention time is 180min.
In steps d, the plastic material of injection is selected from PPS, PPA, PBT, PA.
Described composite construction is comprise the mobile phone of buckle structure or the panel of panel computer.
A kind of pottery and plastic composite structure are the composite constructions made by described method.
Mould a base auxiliary agent for what make pottery and plastic composite structure, comprise the thermoplastic plastic of the surfactant of 3-7% by weight, the wax of 55-70% and/or grease and 25-42%.
Preferably, the polypropylene of the stearic acid of 3-7% by weight, the paraffin of 20-25%, the Brazil wax of 35-40%, the polyethylene of 20-30% and 5-10% is comprised.
Beneficial effect of the present invention:
Slurry is made into by moulding together with base auxiliary agent of the specific components that ceramic powders and the present invention proposed, and sintered by Zhu Su Cheng Xing ﹑ Tuo Zhi ﹑, prepare the ceramic structures of band porous, again gained ceramic structures is put into mould, utilize in-mould injection shaping, obtain the composite construction of pottery and injection moulding, the preparation method of this composite construction can solve the Complex Problem of pottery and plastic cement very well, and technique is simple, operation is convenient, and cost is low.The ceramic plastic composite construction obtained by the present invention, as the shell of the electronic equipments such as mobile phone faceplate, this composite construction combines quite firm, and durability is strong, have very strong stylishness and feel, and wearability is good.Particularly, adopt materials and process of the present invention, when making ceramic structures, can be formed on ceramic structures and being very beneficial for the follow-up loose structure be combined effectively with plastics.
Composite construction of the present invention is made the panel of mobile phone and panel computer, the buckle structure that injection moulding goes out effectively can also solve the buckle selection and design problem that ceramic structure is in the past difficult to overcome.
Accompanying drawing explanation
Fig. 1 is the porous structure ceramic part local surfaces status scan formula electron microscope picture in an embodiment of the present invention.
Detailed description of the invention
Below embodiments of the present invention are elaborated.It is emphasized that following explanation is only exemplary, instead of in order to limit the scope of the invention and apply.
According to embodiments of the invention, a kind of preparation method of ceramic plastic composite, comprise the following steps: by ceramic powders with mould base auxiliary agent and mix, preferably carry out mixing, form the slurry of appropriate injection, this ceramic powders particle size range 1-10 μm of pottery, can be the ceramic materials such as Yangization Lv ﹑ zirconia, special, this be moulded base auxiliary agent composition and comprises surfactant 3-7 % by weight, wax and/or grease ratio 55-70 % by weight, thermoplastic plastic 25-42 % by weight; Then injection moulding becomes to meet part shape and the size of design; Again by degreasing, sintering, be prepared into the ceramic mobile phone panel with multiple hole, obtain the ceramic part with loose structure; Again the ceramic part obtained is put into mould and carry out in-mould injection, obtain pottery and plastic composite part.The plastic material of mold-in injection can be PPS, PPA, PBT, PA.
According to some embodiments, describedly mould in base auxiliary agent, wherein wax and/or grease can be paraffin, microwax, Brazil wax, peanut oil, animal fat etc., thermoplastic plastic can be polyethylene, polypropylene, poly-cerinic acid vinyl acetate, polyacrylate, polyformaldehyde, Merlon, and surfactant can be stearic acid, oleic acid etc.But research finds, be conducive to most for being formed the porous structure ceramic part that is combined with plastics, the best of the present invention mould the polypropylene that base auxiliary agent comprises the stearic acid of 3-7% by weight, the paraffin of 20-25%, the Brazil wax of 35-40%, the polyethylene of 20-30% and 5-10%.
In aforementioned sintering step, preferably, sintering temperature controls the 80-90% in material melting point.In a preferred embodiment, adopt high-purity type aluminium oxide ceramics, sintering temperature controls at 1650-1990 DEG C, temperature retention time 180min.
In certain embodiments, the pottery that injection moulding goes out and plastic composite part comprise buckle structure, such as, comprise the mobile phone faceplate of buckle structure.
Method of the present invention, material and product is further described below by way of instantiation
Example 1
Select average grain diameter 10 μm of zirconia ceramics powder 5Kg, 0.9Kg plastic additives mixing, plastic additive composition is: 1. stearic acid 5%; 2. paraffin 25%; 3. Brazil wax 35%; 4. polyethylene 30%; 5. polypropylene 5%.Put into banbury simultaneously, be heated to 180 DEG C mixing 120 minutes.Obtain pottery and the feeding that mixes of auxiliary agent, injector is added after feeding being taken out fragmentation, obtain desired ceramic green part by mould, after adopting solvent extraction, part is put into sintering furnace, control heating rate and technique, ceramic green is sintered, maximum temperature 1350 DEG C, duration 180mim, then obtains the pottery with loose structure, record porosity 1.6%, carry out surface treatment (grinding, polishing etc.) for part outer surface.Again gained ceramic product is carried out in-mould injection, injected plastics material selects PA66, and injection temperature 270 DEG C, makes PA66 enter ceramic capillary, realizes plastics and Ceramic bond, obtains pottery and plastic composite material.
Example 2
Select average grain diameter 8 μm of zirconia ceramics powder 5Kg, 0.9Kg plastic additives mixing, plastic additive composition is: 1. stearic acid 6%; 2. paraffin 20%; 3. Brazil wax 40%; 4. polyethylene 24%; 5. polypropylene 10%.Put into banbury simultaneously, be heated to 180 DEG C mixing 120 minutes.Obtain pottery and the feeding that mixes of auxiliary agent, injector is added after feeding being taken out fragmentation, obtain desired ceramic green part by mould, after adopting solvent extraction, part is put into sintering furnace, control heating rate and technique, ceramic green is sintered, maximum temperature 1350 DEG C, duration 180mim, then obtains the pottery with loose structure, record porosity 1.3%, carry out surface treatment (grinding, polishing etc.) for part outer surface.Again gained ceramic product is carried out in-mould injection, injected plastics material selects PA66, and injection temperature 270 DEG C, makes PA66 enter ceramic capillary, realizes plastics and Ceramic bond, obtains pottery and plastic composite material.
Example 3
Select average grain diameter 10 μm of zirconia ceramics powder 5Kg, 0.9Kg plastic additives mixing, plastic additive composition is: 1. stearic acid 3%; 2. paraffin 25%; 3. Brazil wax 35%; 4. polyethylene 30%; 5. polypropylene 7%.Put into banbury simultaneously, be heated to 180 DEG C mixing 120 minutes.Obtain pottery and the feeding that mixes of auxiliary agent, injector is added after feeding being taken out fragmentation, obtain desired ceramic green part by mould, after adopting solvent extraction, part is put into sintering furnace, control heating rate and technique, ceramic green is sintered, maximum temperature 1400 DEG C, duration 180mim, then obtains the pottery with loose structure, record porosity 1.2%, carry out surface treatment (grinding, polishing etc.) for part outer surface.Again gained ceramic product is carried out in-mould injection, injected plastics material selects PA66, and injection temperature 270 DEG C, makes PA66 enter ceramic capillary, realizes plastics and Ceramic bond, obtains pottery and plastic composite material.
Example 4
Select average grain diameter 5 μm of zirconia ceramics powder 5Kg, 0.9Kg plastic additives mixing, plastic additive composition is: 1. stearic acid 7%; 2. paraffin 22%; 3. Brazil wax 40%; 4. polyethylene 21%; 5. polypropylene 10%.Put into banbury simultaneously, be heated to 180 DEG C mixing 120 minutes.Obtain pottery and the feeding that mixes of auxiliary agent, injector is added after feeding being taken out fragmentation, obtain desired ceramic green part by mould, after adopting solvent extraction, part is put into sintering furnace, control heating rate and technique, ceramic green is sintered, maximum temperature 1450 DEG C, duration 180mim, then obtains the pottery with loose structure, record porosity 0.5%, carry out surface treatment (grinding, polishing etc.) for part outer surface.Again gained ceramic product is carried out in-mould injection, injected plastics material selects PA66, and injection temperature 270 DEG C, makes PA66 enter ceramic capillary, realizes plastics and Ceramic bond, obtains pottery and plastic composite material.
Based on gained degreasing sintered in above-mentioned example porous structure ceramic part surface state as shown in Figure 1, ceramic structures can be combined with injected plastics material admirably by its surperficial this loose structure.Example 1-4 all can obtain similar excellent results.
Above content combines concrete/preferred embodiment further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; its embodiment that can also describe these makes some substituting or modification, and these substitute or variant all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a preparation method for pottery and plastic composite structure, is characterized in that, comprises the following steps:
A. by ceramic powders with mould base auxiliary agent and mix and formed and be applicable to the slurry injected, the wherein said thermoplastic plastic moulding base auxiliary agent and comprise the surfactant of 3-7% by weight, the wax of 55-70% and/or grease and 25-42%;
B. be required ceramic structures shape by slurry injection moulding;
C. carry out degreasing to described ceramic structures, after moulding base auxiliary agent described in deviating from, sintering obtains the ceramic structures with loose structure;
D. the ceramic structures with loose structure is put into mould injection moulding, obtain the composite construction of pottery and plastics.
2. the preparation method of pottery as claimed in claim 1 and plastic composite structure, it is characterized in that, described in mould base auxiliary agent be the polypropylene comprising the stearic acid of 3-7% by weight, the paraffin of 20-25%, the Brazil wax of 35-40%, the polyethylene of 20-30% and 5-10%.
3. the preparation method of pottery as claimed in claim 1 or 2 and plastic composite structure, it is characterized in that, described ceramic powders is aluminium oxide or zirconia ceramics material, powder diameter scope 1-10 μm.
4. the preparation method of pottery as claimed in claim 1 and plastic composite structure, it is characterized in that, described wax and/or grease are selected from paraffin, microwax, Brazil wax, peanut oil, animal fat, described thermoplastic plastic is selected from polyethylene, polypropylene, poly-cerinic acid vinyl acetate, polyacrylate, polyformaldehyde, Merlon, and described surfactant is selected from stearic acid, oleic acid.
5. the preparation method of pottery as claimed in claim 1 or 2 and plastic composite structure, it is characterized in that, in step c, sintering temperature is the 80-90% of material melting point, preferably, obtain ceramic structures for high-purity type aluminium oxide ceramics, sintering temperature is 1650-1990 DEG C, and temperature retention time is 180min.
6. the preparation method of pottery as claimed in claim 1 or 2 and plastic composite structure, it is characterized in that, in steps d, the plastic material of injection is selected from PPS, PPA, PBT, PA.
7. the pottery as described in any one of claim 1 to 6 and the preparation method of plastic composite structure, is characterized in that, described composite construction is comprise the mobile phone of buckle structure or the panel of panel computer.
8. pottery and a plastic composite structure, is characterized in that, is the composite construction made by the method described in any one of claim 1 to 7.
9. mould a base auxiliary agent for what make pottery and plastic composite structure, it is characterized in that, comprise the thermoplastic plastic of the surfactant of 3-7% by weight, the wax of 55-70% and/or grease and 25-42%.
10. mould base auxiliary agent as claimed in claim 9, it is characterized in that, it is characterized in that, comprise the polypropylene of the stearic acid of 3-7% by weight, the paraffin of 20-25%, the Brazil wax of 35-40%, the polyethylene of 20-30% and 5-10%.
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Cited By (8)
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| CN105195745A (en) * | 2015-10-10 | 2015-12-30 | 深圳艾利门特科技有限公司 | Method for manufacturing mobile phone middle frame through powder injection forming technology |
| CN106911824A (en) * | 2017-03-06 | 2017-06-30 | 广东长盈精密技术有限公司 | Ceramic shell processing technology, ceramic shell and electronic equipment |
| CN107755702A (en) * | 2016-08-15 | 2018-03-06 | 晟铭电子科技股份有限公司 | Improved powder injection molding compound, product made therefrom and method of making the product |
| CN108202440A (en) * | 2016-12-16 | 2018-06-26 | 北京小米移动软件有限公司 | Ceramic component and its moulding process, electronic equipment |
| JP2019043129A (en) * | 2017-09-01 | 2019-03-22 | 谷▲しゅう▼精密工業股▲ふん▼有限公司 | Ceramic plastic composite and production method thereof |
| CN109626998A (en) * | 2019-01-25 | 2019-04-16 | 韶关瑞锦新材料科技有限公司 | A kind of mobile phone pottery backboard and its processing technology |
| CN114953095A (en) * | 2021-02-22 | 2022-08-30 | 杭州中好东峻科技有限公司 | Die pressing process for manufacturing ceramic composite material filter for communication |
| CN106911824B (en) * | 2017-03-06 | 2024-04-30 | 广东长盈精密技术有限公司 | Ceramic shell processing technology, ceramic shell and electronic equipment |
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Cited By (10)
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| CN107755702A (en) * | 2016-08-15 | 2018-03-06 | 晟铭电子科技股份有限公司 | Improved powder injection molding compound, product made therefrom and method of making the product |
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| CN108202440B (en) * | 2016-12-16 | 2021-03-30 | 北京小米移动软件有限公司 | Ceramic member, molding process thereof, and electronic device |
| CN106911824A (en) * | 2017-03-06 | 2017-06-30 | 广东长盈精密技术有限公司 | Ceramic shell processing technology, ceramic shell and electronic equipment |
| CN106911824B (en) * | 2017-03-06 | 2024-04-30 | 广东长盈精密技术有限公司 | Ceramic shell processing technology, ceramic shell and electronic equipment |
| JP2019043129A (en) * | 2017-09-01 | 2019-03-22 | 谷▲しゅう▼精密工業股▲ふん▼有限公司 | Ceramic plastic composite and production method thereof |
| CN109626998A (en) * | 2019-01-25 | 2019-04-16 | 韶关瑞锦新材料科技有限公司 | A kind of mobile phone pottery backboard and its processing technology |
| CN114953095A (en) * | 2021-02-22 | 2022-08-30 | 杭州中好东峻科技有限公司 | Die pressing process for manufacturing ceramic composite material filter for communication |
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Address after: 523878 Changan City, Guangdong Province town on the corner management area Applicant after: Guangdong wins smart group Limited by Share Ltd Applicant after: Dongguan Hua Jing powder metallurgy company limited Address before: 523878 Changan City, Guangdong Province town on the corner management area Applicant before: Dongguan Janus Precision Components Co., Ltd. Applicant before: Dongguan Hua Jing powder metallurgy company limited |
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Application publication date: 20150506 |