CN106584640A - Injection molding die and preparing method for ceramic sheet, mobile phone cover plate and mobile phone back plate - Google Patents
Injection molding die and preparing method for ceramic sheet, mobile phone cover plate and mobile phone back plate Download PDFInfo
- Publication number
- CN106584640A CN106584640A CN201611116947.4A CN201611116947A CN106584640A CN 106584640 A CN106584640 A CN 106584640A CN 201611116947 A CN201611116947 A CN 201611116947A CN 106584640 A CN106584640 A CN 106584640A
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- Prior art keywords
- substrate
- blank
- potsherd
- guide face
- preparation
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0002—Auxiliary parts or elements of the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0002—Auxiliary parts or elements of the mould
- B28B7/0014—Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0029—Moulds or moulding surfaces not covered by B28B7/0058 - B28B7/36 and B28B7/40 - B28B7/465, e.g. moulds assembled from several parts
- B28B7/0035—Moulds characterised by the way in which the sidewalls of the mould and the moulded article move with respect to each other during demoulding
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
Abstract
The invention relates to an injection molding die and a preparing method for a ceramic sheet, a mobile phone cover plate and a mobile phone back plate. The injection molding die comprises a first base plate, a second base plate and a cushion strip. The first base plate is provided with a flow guiding face, and the flow guiding face is provided with multiple flow guiding grooves so that the roughness of the flow guiding face can range from 6.3 microns to 12.5 microns. The second base plate is used for being matched with the first base plate. The second base plate is provided with a smooth face used for being opposite to the flow guiding face. The cushion strip is used for being clamped between the first base plate and the second base plate and can be detachably and fixedly connected with the first base plate and the second base plate. A die cavity with an opening can be jointly defined by the cushion strip, the first base plate and the second base plate. When the cushion strip is fixedly connected with the first base plate and the second base plate, the smooth face of the second base plate is opposite to the flow guiding face of the first base plate, and the minimum distance between the smooth face and the flow guiding face ranges from 0.2 mm to 1.2 mm. By means of the above injection molding die, energy consumption can be reduced.
Description
Technical field
The present invention relates to preparation method, the handss of ceramic material field, more particularly to a kind of casting mould and potsherd
The preparation method of cover plate and the preparation method of mobile phone backboard.
Background technology
Generally, gel casting forming be applied to prepare thickness be 0.6mm～10mm ceramic green sheet, due to gel injection-moulding into
Type relies primarily on gravity as power source, and the mould of narrower die cavity is needed when preparing ceramic green sheet of the thickness less than 0.6mm
Tool, and this narrower die cavity can make slurry be difficult to only flow under gravity inside it, need to apply external force to ensure
The smooth inflow of slurry and flow velocity, increased energy consumption.
The content of the invention
Based on this, it is necessary to provide a kind of casting mould for being capable of reducing energy consumption.
Additionally, also providing the preparation side of a kind of preparation method of potsherd, the preparation method of hand-set lid and mobile phone backboard
Method.
A kind of casting mould, including：
First substrate, with guide face, multiple diversion grooves are provided with the guide face so that the guide face it is thick
Rugosity is 6.3 microns～12.5 microns；
For the second substrate coordinated with the first substrate, with shiny surface, the shiny surface is used for and the water conservancy diversion
Face is oppositely arranged；
Filler strip, for being held between the first substrate and the second substrate, and can be with the first substrate, institute
State second substrate and be removably secured connection, and the filler strip can jointly enclose and set with the first substrate, the second substrate
Form the die cavity with an opening, when the filler strip is fixedly connected with the first substrate, the second substrate, described second
The shiny surface of substrate is oppositely arranged with the guide face of the first substrate, and the minimum range of the shiny surface and the guide face
For 0.2 millimeter～1.2 millimeters.
Wherein in one embodiment, the first substrate and the second substrate are transparency carrier.
Wherein in one embodiment, the roughness of the shiny surface is less than or equal to 0.6 micron.
A kind of preparation method of potsherd, comprises the steps：
Ceramic size of the viscosity for 100mPas～5000mPas is provided；
By the ceramic size from the opening injection die cavity of above-mentioned casting mould, the ceramic slurry gel is treated
Afterwards, blank is formed；
By the blank demoulding, then the blank is dried successively and is sintered, obtain the potsherd.
Wherein in one embodiment, the guide face of the first substrate of the casting mould is prepared by following steps：
Blasting treatment is carried out to the surface of substrate, the first substrate with the guide face is obtained.
Wherein in one embodiment, it is the step of by the blank demoulding：First by described in the casting mould
Second substrate is removed, then toward spray water between the guide face of the blank and the first substrate, then by the blank and institute
State first substrate separation.
Wherein in one embodiment, it is by the step that the blank is dried：The blank is done at 60 DEG C～80 DEG C
It is dried to the blank weightlessness 10%～15% at dry to 60 DEG C～80 DEG C.
Wherein in one embodiment, after the step that the blank is dried, the step of sintering before, also including will be dry
Dry blank constant temperature and humidity sofening treatment 2 under conditions of temperature is 20 DEG C～30 DEG C and humidity is 80%RH～98%RH
Hour～4 hours the step of.
A kind of preparation method of hand-set lid, comprises the steps：
Potsherd is prepared using the preparation method of above-mentioned potsherd；
The potsherd is processed, the hand-set lid is obtained.
A kind of preparation method of mobile phone backboard, comprises the steps：
Potsherd is prepared using the preparation method of above-mentioned potsherd；
The potsherd is processed, the mobile phone backboard is obtained.
Due to having multiple diversion grooves, the light of second substrate on the guide face of the first substrate of above-mentioned casting mould
Sliding surface is used to be oppositely arranged with guide face, and filler strip is used to be held between first substrate and second substrate, and can be with first
Substrate, second substrate are removably secured connection, and filler strip can enclose to set to be formed with one jointly with first substrate, second substrate
The die cavity of opening, and when filler strip is fixedly connected with first substrate, second substrate, shiny surface and the first substrate of second substrate
Guide face is oppositely arranged, i.e., guide face and shiny surface are respectively the relative side wall of the die cavity of injection forming mold, and due to leading
Multiple diversion grooves are provided with stream interface so that guide face roughness be 6.3 microns～12.5 microns so that diversion groove rise
To the effect of capillary water conservancy diversion, and ensure with certain viscosity ceramic size only under gravity just can shiny surface with
The minimum range of guide face is the casting of 0.2 millimeter～1.2 millimeters (i.e. mold cavity width is only 0.2 millimeter～1.2 millimeters)
It is quick and be smoothly flowed in die cavity in mould, and without the need for apply external force again, energy consumption is relatively low, and filler strip can be with the first base
Plate, second substrate are removably secured connection, so that the base substrate of molding encloses jointly in filler strip and first substrate, second substrate sets shape
Into die cavity in can demoulding, realize the function of casting mould.
Description of the drawings
Fig. 1 is the structural representation of the casting mould of an embodiment；
Fig. 2 is the flow chart of the preparation method of the hand-set lid of an embodiment；
Fig. 3 is the flow chart of the preparation method of the potsherd in the preparation method of the hand-set lid shown in Fig. 2.
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give the preferred embodiment of the present invention.But, the present invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose for providing these embodiments is to make the understanding to the disclosure more saturating
It is thorough comprehensive.
Unless otherwise defined, all of technology used herein and scientific terminology and the technical field for belonging to the present invention
The implication that technical staff is generally understood that is identical.The term for being used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that of the invention in limiting.Term as used herein " and/or " include one or more phases
The arbitrary and all of combination of the Listed Items of pass.
As shown in figure 1, the casting mould 100 of an embodiment, is particularly well-suited to produce thickness less than 0.6 millimeter
Ceramic green sheet.The casting mould 100 includes first substrate 110, second substrate 120 and filler strip 130.
First substrate 110 and second substrate 120 are transparency carrier, in order to observe the inflow situation of slurry.In this reality
In applying example, first substrate 110 and second substrate 120 are glass substrate.Specifically in the illustrated embodiment, the He of first substrate 110
Second substrate 120 is square tabular, and the length, width and height of first substrate 110 and second substrate 120 are equal.It is appreciated that the
The shape of one substrate 110 and second substrate 120 is also not necessarily limited to as the shape of square tabular, first substrate 110 and second substrate 120
Can be adjusted according to specific needs.
First substrate 110 has guide face 112, and multiple diversion groove (not shown) are provided with guide face so that guide face
112 roughness Ra is 6.3 microns～12.5 microns.Because ceramic size typically all has certain viscosity, and the mould of mould
The width in chamber 140 is only 0.2 millimeter～1.2 millimeters, if the roughness of guide face 112 is too small, it is impossible to ensure slurry in gravity
In the presence of it is quick and smoothly flow into, need to apply inflow of the external force to ensure slurry；If the coarse of guide face 112 is spent
Greatly, the surface roughness of potsherd produced with this mould can be caused larger, causes the fineness of potsherd poor, and not
Preferably use as product.And the roughness Ra of guide face 112 is set to into 6.3 microns～12.5 microns, water conservancy diversion can not only be made
Groove plays a part of capillary drain, it is ensured that slurry only smoothly flows along diversion groove under gravity, while can also
Enough ensure the fineness on the surface of the potsherd produced.
Wherein, the guide face 112 is obtained by blasting treatment, so as to form rough guide face 112, so that whole
Individual guide face 112 is a rough structure.
Second substrate 120 is used to coordinate with first substrate 110.Second substrate 120 has shiny surface 122, the shiny surface 122
For being oppositely arranged with guide face 112.
Specifically, the roughness of shiny surface 122 is suitable with second substrate 120 in order to base substrate less than or equal to 0.6 micron
Profit is separated.
Filler strip 130 is used to be held between first substrate 110 and second substrate 120, and can with first substrate 110, the
Two substrates 120 are removably secured connection, and filler strip 130 can enclose to set to be formed jointly with first substrate 110, second substrate 120
Die cavity 140 with an opening.When filler strip 130 is fixedly connected with first substrate 110, second substrate 120, second substrate 120
Shiny surface 122 be oppositely arranged with the guide face 112 of first substrate 110, and the minimum range of shiny surface and guide face is 0.2 milli
Rice～substantially 0.2 millimeter～1.2 millimeters of 1.2 millimeters, the i.e. width of die cavity 140.
Wherein, the material of filler strip 130 is rustless steel.The substantially U-shaped of filler strip 130.It is appreciated that filler strip 130 is not also limited
In for said structure, the construction of filler strip 130 can according to specific needs or the shape of first substrate 110 and second substrate 120 is carried out
Adjustment.
In the present embodiment, using bandage 150 first substrate 110 and second substrate 120 are bundled fixed and realizes first
Substrate 110, second substrate 120 and filler strip 130 are removably secured connection.It is appreciated that fixture can also be used by the first base
Plate 110 and second substrate 120 are fixed together and realize that first substrate 110, second substrate 120 and filler strip 130 are removably solid
Fixed connection.
Due to having multiple diversion grooves on the guide face 112 of the first substrate 110 of above-mentioned casting mould 100, the
The shiny surface 122 of two substrates 120 is used to be oppositely arranged with guide face 112, and filler strip 130 is used to be held on the He of first substrate 110
Between second substrate 120, and can be removably secured and be connected with first substrate 110, second substrate 120, and filler strip 130 can
Enclose jointly with first substrate 110, second substrate 120 and set to form the die cavity 140 with an opening, and when the base of filler strip 130 and first
When plate 110, second substrate 120 are fixedly connected, the shiny surface 122 of second substrate 120 and the phase of guide face 112 of first substrate 110
To arranging, i.e., guide face 112 and shiny surface 122 are respectively the relative side wall of the die cavity 140 of injection forming mold, and due to leading
Multiple diversion grooves are provided with stream interface 112 so that and guide face 112 roughness be 6.3 microns～12.5 microns, so as to lead
Stream groove plays a part of capillary water conservancy diversion, and ensures that the ceramic size with certain viscosity only under gravity just can be
The minimum range of shiny surface 122 and guide face 112 be 0.2 millimeter～1.2 millimeters (i.e. the width of die cavity 140 be only 0.2 millimeter～
1.2 millimeters) casting mould 100 in it is quick and be smoothly flowed in die cavity 140, and without the need for apply external force again, energy consumption
It is relatively low, and filler strip 130 can be removably secured and be connected with first substrate 110, second substrate 120, so that the base substrate of molding exists
Filler strip 130 and first substrate 110, second substrate 120 enclose jointly set in the die cavity 140 to be formed can demoulding, realize casting
The function of mould 100.
As shown in Fig. 2 the preparation method of the hand-set lid of an embodiment, comprises the steps：
Step S210：Prepare potsherd.
Wherein, as shown in figure 3, the preparation method of the potsherd of step S210 is as follows：
Step S212：Ceramic size of the viscosity for 100mPas～5000mPas is provided.
In the present embodiment, the preparation process of ceramic size is：By organic monomer, cross-linking agent, dispersant, solvent and ceramics
Powder mixes, and adds catalyst and initiator, forms the ceramic size that viscosity is 100mPas～5000mPas.
Wherein, the step of organic monomer, cross-linking agent, dispersant, solvent and ceramic powder being mixed is specially：By organic list
The mixing of body, cross-linking agent, dispersant and solvent, and pH value is adjusted to 9～10, obtain pre-mixing liquor；Ceramic powder is added to prewired
Mix in liquid, catalyst and initiator are then added under conditions of 22 DEG C～28 DEG C, obtain ceramic size.
Wherein, the purpose for catalyst and initiator being added under conditions of 22 DEG C～28 DEG C is to prevent ceramic size from coagulating
Gel, in order to follow-up injection.
In the present embodiment, organic monomer is acrylamide, Methacrylamide or n-methylolacrylamide；Cross-linking agent is
N, N'- methylene-bisacrylamide or poly- (ethylene glycol) methacrylate；Dispersant is selected from ammonium polyacrylate, Fructus Citri Limoniae
One kind in sour ammonia and Polyethylene Glycol；Solvent is water；Ceramic powder for example can be zirconia powder material；Catalyst is N, N, N',
N'- tetramethylethylenediamines；Initiator is Ammonium persulfate..
Wherein, in pre-mixing liquor, the weight/mass percentage composition of organic monomer is 10～20%, the weight/mass percentage composition of dispersant
For 2～5%, organic monomer is 10 with the mass ratio of cross-linking agent:1～40:1；Catalyst is 0.1 with the mass ratio of organic monomer:
100～2:100；Initiator is 0.1 with the mass ratio of organic monomer:100～2:100.
Wherein, it is ammonia to adjust pH value to 9～10 reagents for using.
Wherein, step ceramic powder being added in pre-mixing liquor is specially：By 3/5ths ceramic powder with it is prewired
After liquid ball milling mixing 30 minutes, add remaining ceramic powder and continue ball milling 18 hours～24 hours.Due to disposably making pottery
Ceramic powder all adds and is difficult to be mixed into homogeneous slurry, and first by 3/5ths ceramic powder and pre-mixing liquor ball milling mixing,
Add remaining 2/5ths and continue ball milling, conveniently prepare homogeneous slurry.
Wherein, after the step of ceramic powder is added to mixing in pre-mixing liquor, the step of catalyst and initiator is added
Before rapid, the step of also include the mixed liquor evacuation degasification by ceramic powder and pre-mixing liquor.Specifically, evacuation degasification 10～
30 minutes.
It is appreciated that ceramic size is also not necessarily limited to for above-mentioned ceramic size, can as needed select specific ceramic slurry
Material, as long as the viscosity of ceramic size is 100mPas～5000mPas.
Step S214：By ceramic size from the opening injection die cavity of casting mould, after ceramic slurry gel,
Form blank.
Wherein, also including casting mould first substrate guide face forming step：Pending substrate is provided, it is right
The surface of substrate carries out blasting treatment, obtains the first substrate of the guide face with said structure.
Wherein, temperature when is injected in die cavity ceramic size is 22 DEG C～28 DEG C, to prevent ceramic size from injecting
There is gelation in journey.Specifically, ceramic slurry gel is carried out at normal temperatures and pressures.
Wherein, when ceramic size being injected into die cavity, the speed in the injection die cavity of ceramic size need to be controlled, to avoid injection
During sputter bubble.
Step S216：By blank demoulding, then blank is dried successively and is sintered, obtain potsherd.
Wherein, by blank demoulding the step of is：First the second substrate of casting mould is removed, then toward blank and
Spray water between the guide face of one substrate, then blank is separated with first substrate.Because the face that second substrate is contacted with blank is
Shiny surface, therefore, second substrate is easy to be separated with blank；And the face that first substrate is contacted with blank is guide face, it is more difficult to point
From, by the spray water between guide face and blank blank can be made simpler separate with first substrate.
Wherein, it is by the step that blank is dried：Blank is dried to blank weightlessness 10%～15% at 60 DEG C～80 DEG C,
I.e. weight loss is 10%～15%.
Wherein, after step blank being dried, the step of sintering before, also include dry blank in temperature being 20
DEG C～30 DEG C and humidity is the step of be constant temperature and humidity sofening treatment 2 hours～4 hours under conditions of 80%RH～98%RH.Its
In, %RH represents relative humidity.There is certain volume contraction during being dried due to blank, if blank has not been completely dried
Just cut, then the potsherd size that may be finally obtained has very big error, and dried blank is very crisp very hard, passes through
It is positioned over again after first blank is dried after blank after moisturizing is made moist in climatic chamber can soften, is not only convenient for punching molding, and
And can be effectively prevented from the larger error for directly causing to wet base cutting.
The preparation method of above-mentioned potsherd by using said structure casting mould so that viscosity is 100mPa
The ceramic size of s～5000mPas can be only quick under gravity and be smoothly flowed in die cavity, and need not be applied
Plus external force, reduce energy consumption.And the preparation method of above-mentioned potsherd is simple to operate, it is easy to industrialized production.
It is appreciated that the method for preparing potsherd is not limited to using the method for upper gel casting forming, can also be using stream
Prolong or dry-pressing, but casting apparatus are expensive, high cost, the sintering briquette intensity of sintering briquette strength ratio gel forming is low (because of slurry configuration
When, much higher than flow casting molding of gel forming solid content), and it is dry-pressing formed be also easy to produce pore, intensity is also not so good as gel forming
The blank for obtaining, and post-production is complicated, needs the thinning thickness for removing more, therefore, in the present embodiment, preferably gel
The method of casting prepares potsherd.
Step S220：Potsherd is processed, hand-set lid is obtained.
Wherein, the step of potsherd being processed is specially：By potsherd cutting, grinding and buffing, so as to it is in one's hands
Cover plate.
Potsherd used in preparation method due to the hand-set lid is prepared into by the preparation method of above-mentioned potsherd
Arrive, with relatively low energy consumption.
The preparation method of the mobile phone backboard of one embodiment, difference roughly the same with the preparation method of above-mentioned hand-set lid
Only carry out process in the potsherd prepared with present embodiment employing and obtain mobile phone backboard.
It is below specific embodiment part, following examples are with acrylic acid amides as organic monomer, Zirconium powder is pottery
Ceramic powder is illustrated：
Embodiment 1
The preparation process of the potsherd of the present embodiment is as follows：
(1) by acrylamide, N, N'- methylene-bisacrylamides and ammonium polyacrylate add deionized water stirring mixing, make
Adjusted to pH value to 9 with ammonia, obtain pre-mixing liquor, wherein, in pre-mixing liquor, the weight/mass percentage composition of acrylamide is 15%,
The weight/mass percentage composition of ammonium polyacrylate is 3%, and the mass ratio of acrylamide and N, N'- methylene-bisacrylamide is 25:1.
(2) by quality for 3/5ths Zirconium powder and pre-mixing liquor ball milling mixing 30 minutes after, add remaining five
/ bis- Zirconium powder, continues ball milling 21 hours, then evacuation degasification 20 minutes, then, under conditions of 25 DEG C according to
Secondary addition catalyst and initiator, and stir 1 minute respectively, obtain the ceramic size that viscosity is 100mPas.Wherein, it is catalyzed
Agent is N, and N, N', N'- tetramethylethylenediamine, catalyst is 1 with the mass ratio of acrylamide:100；Initiator is Ammonium persulfate.,
Initiator is 1 with the mass ratio of acrylamide:100.
(3) under conditions of 25 DEG C, ceramic size is slowly injected in transparent die cavity, until filling die cavity, treats ceramic slurry
After material gelation, blank is formed.Wherein, the shiny surface of second substrate and the minimum range of the guide face of first substrate are 0.2 milli
Rice, the roughness Ra of guide face is 12.5 microns, and the specification of first substrate and second substrate is 300 × 390mm, die cavity
Depth is 280 millimeters.
(4) first the second substrate of casting mould removed, gently uncover blank one jiao, then toward blank and first
Clear water is sprayed between the guide face of substrate, then blank is uncovered from first substrate, so that blank demoulding.
(5) blank is dried to weightless 10% at 60 DEG C, it is 80% with humidity to be 20 DEG C in temperature by dry blank
Constant temperature and humidity sofening treatment 4 hours under conditions of RH, then it is sintered, obtain the potsherd that thickness is 0.18 millimeter.
Using manual time-keeping, the ceramic size for obtaining the present embodiment fills time of die cavity and is shown in Table 1.
Embodiment 2
The preparation process of the potsherd of the present embodiment is as follows：
(1) by acrylamide, N, N'- methylene-bisacrylamides and ammonium polyacrylate add deionized water stirring mixing, make
Adjusted to pH value to 9 with ammonia, obtain pre-mixing liquor, wherein, in pre-mixing liquor, the weight/mass percentage composition of acrylamide is 15%,
The weight/mass percentage composition of ammonium polyacrylate is 3%, and the mass ratio of acrylamide and N, N'- methylene-bisacrylamide is 25:1.
(2) by quality for 3/5ths Zirconium powder and pre-mixing liquor ball milling mixing 30 minutes after, add remaining five
/ bis- Zirconium powder, continues ball milling 18 hours, then evacuation degasification 20 minutes, then, under conditions of 22 DEG C according to
Secondary addition catalyst and initiator, and stir 1 minute respectively, obtain the ceramic size that viscosity is 5000mPas.Wherein, it is catalyzed
Agent is N, and N, N', N'- tetramethylethylenediamine, catalyst is 1 with the mass ratio of acrylamide:100；Initiator is Ammonium persulfate.,
Initiator is 1 with the mass ratio of acrylamide:100.
(3) under conditions of 22 DEG C, ceramic size is slowly injected in die cavity, until filling die cavity, treats that ceramic size coagulates
After gel, blank is formed.Wherein, the shiny surface of second substrate and the minimum range of the guide face of first substrate are 1.2 millimeters, are led
The roughness Ra of stream interface is 6.3 microns, and the specification of first substrate and second substrate is 300 × 390mm, the depth of die cavity with
The depth of the die cavity of embodiment 1 is identical.
(4) first the second substrate of casting mould removed, gently uncover blank one jiao, then toward blank and first
Clear water is sprayed between the guide face of substrate, then blank is uncovered from first substrate, so that blank demoulding.
(5) blank is dried to weightless 10% at 80 DEG C, it is 98% with humidity to be 30 DEG C in temperature by dry blank
Constant temperature and humidity sofening treatment 2 hours under conditions of RH, then it is sintered, obtain the potsherd that thickness is 0.4 millimeter.
The ceramic size for obtaining the present embodiment using the identical method of embodiment 1 fills the time of die cavity and is shown in Table 1.
Embodiment 3
The preparation process of the potsherd of the present embodiment is as follows：
(1) by acrylamide, N, N'- methylene-bisacrylamides and ammonium polyacrylate add deionized water stirring mixing, make
Adjusted to pH value to 9 with ammonia, obtain pre-mixing liquor, wherein, in pre-mixing liquor, the weight/mass percentage composition of acrylamide is 15%,
The weight/mass percentage composition of ammonium polyacrylate is 3%, and the mass ratio of acrylamide and N, N'- methylene-bisacrylamide is 25:1.
(2) quality is added in pre-mixing liquor for 3/5ths Zirconium powder, Jing after ball milling mixing 30 minutes, is added
Remaining 2/5ths Zirconium powder, continues ball milling 24 hours, then evacuation degasification 20 minutes, then, at 22 DEG C
Under the conditions of sequentially add catalyst and initiator, and stir 1 minute respectively, obtain the ceramic size that viscosity is 500mPas.Its
In, catalyst is N, and N, N', N'- tetramethylethylenediamine, catalyst is 1 with the mass ratio of acrylamide:100；Initiator was
Ammonium sulfate, initiator is 1 with the mass ratio of acrylamide:100.
(3) under conditions of 22 DEG C, ceramic size is slowly injected in die cavity, until filling die cavity, treats that ceramic size coagulates
After gel, blank is formed.Wherein, the shiny surface of second substrate and the minimum range of the guide face of first substrate are 0.5 millimeter, are led
The roughness Ra of stream interface is 9 microns, and the specification of first substrate and second substrate is 300 × 390mm, the depth and reality of die cavity
The depth for applying the die cavity of example 1 is identical.
(4) first the second substrate of casting mould removed, gently uncover blank one jiao, then toward blank and first
Clear water is sprayed between the guide face of substrate, then blank is uncovered from first substrate, so that blank demoulding.
(5) blank is dried to weightless 12% at 70 DEG C, it is 90% with humidity to be 25 DEG C in temperature by dry blank
Constant temperature and humidity sofening treatment 3 hours under conditions of RH, then it is sintered, obtain the potsherd that thickness is 0.24 millimeter.
The ceramic size for obtaining the present embodiment using the identical method of embodiment 1 fills the time of die cavity and is shown in Table 1.
Embodiment 4
The preparation process of the potsherd of the present embodiment is as follows：
(1) by acrylamide, N, N'- methylene-bisacrylamides and ammonium polyacrylate add deionized water stirring mixing, make
Adjusted to pH value to 9 with ammonia, obtain pre-mixing liquor, wherein, in pre-mixing liquor, the weight/mass percentage composition of acrylamide is 15%,
The weight/mass percentage composition of ammonium polyacrylate is 3%, and the mass ratio of acrylamide and N, N'- methylene-bisacrylamide is 25:1.
(2) quality is added in pre-mixing liquor for 3/5ths Zirconium powder, Jing after ball milling mixing 30 minutes, is added
Remaining 2/5ths Zirconium powder, continues ball milling 24 hours, then evacuation degasification 20 minutes, then, at 28 DEG C
Under the conditions of sequentially add catalyst and initiator, and stir 1 minute respectively, obtain the ceramic size that viscosity is 300mPas.Its
In, catalyst is N, and N, N', N'- tetramethylethylenediamine, catalyst is 1 with the mass ratio of acrylamide:100；Initiator was
Ammonium sulfate, initiator is 1 with the mass ratio of acrylamide:100.
(3) under conditions of 28 DEG C, ceramic size is slowly injected in die cavity, until filling die cavity, treats that ceramic size coagulates
After gel, blank is formed.Wherein, the shiny surface of second substrate and the minimum range of the guide face of first substrate are 0.4 millimeter, are led
The roughness Ra of stream interface is 7 microns, and the specification of first substrate and second substrate is 300 × 390mm, the depth and reality of die cavity
The depth for applying the die cavity of example 1 is identical.
(4) first the second substrate of casting mould removed, gently uncover blank one jiao, then toward blank and first
Clear water is sprayed between the guide face of substrate, then blank is uncovered from first substrate, so that blank demoulding.
(5) blank is dried to weightless 13% at 65 DEG C, it is 85% with humidity to be 26 DEG C in temperature by dry blank
Constant temperature and humidity sofening treatment 3.5 hours under conditions of RH, then it is sintered, obtain the potsherd that thickness is 0.32 millimeter.
The ceramic size for obtaining the present embodiment using the identical method of embodiment 1 fills the time of die cavity and is shown in Table 1.
Embodiment 5
The preparation process of the potsherd of the present embodiment is as follows：
(1) by acrylamide, N, N'- methylene-bisacrylamides and ammonium polyacrylate add deionized water stirring mixing, make
Adjusted to pH value to 9 with ammonia, obtain pre-mixing liquor, wherein, in pre-mixing liquor, the weight/mass percentage composition of acrylamide is 15%,
The weight/mass percentage composition of ammonium polyacrylate is 3%, and the mass ratio of acrylamide and N, N'- methylene-bisacrylamide is 25:1.
(2) quality is added in pre-mixing liquor for 3/5ths Zirconium powder, Jing after ball milling mixing 30 minutes, is added
Remaining 2/5ths Zirconium powder, continues ball milling 24 hours, then evacuation degasification 20 minutes, then, at 25 DEG C
Under the conditions of sequentially add catalyst and initiator, and stir 1 minute respectively, obtain the ceramic size that viscosity is 1000mPas.
Wherein, catalyst is N, and N, N', N'- tetramethylethylenediamine, catalyst is 1 with the mass ratio of acrylamide:100；Initiator is
Ammonium persulfate., initiator is 1 with the mass ratio of acrylamide:100.
(3) under conditions of 25 DEG C, ceramic size is slowly injected in die cavity, until filling die cavity, treats that ceramic size coagulates
After gel, blank is formed.Wherein, the shiny surface of second substrate and the minimum range of the guide face of first substrate are 0.4 millimeter, are led
The roughness Ra of stream interface is 8.5 microns, and the specification of first substrate and second substrate is 300 × 390mm, the depth of die cavity with
The depth of the die cavity of embodiment 1 is identical.
(4) first the second substrate of casting mould removed, gently uncover blank one jiao, then toward blank and first
Clear water is sprayed between the guide face of substrate, then blank is uncovered from first substrate, so that blank demoulding.
(5) blank is dried to weightless 14% at 75 DEG C, it is 95% with humidity to be 28 DEG C in temperature by dry blank
Constant temperature and humidity sofening treatment 2.5 hours under conditions of RH, then it is sintered, obtain the potsherd that thickness is 0.32 millimeter.
The ceramic size for obtaining the present embodiment using the identical method of embodiment 1 fills the time of die cavity and is shown in Table 1.
Embodiment 6
The preparation process of the potsherd of the present embodiment is as follows：
(1) by acrylamide, N, N'- methylene-bisacrylamides and ammonium polyacrylate add deionized water stirring mixing, make
Adjusted to pH value to 10 with ammonia, obtain pre-mixing liquor, wherein, in pre-mixing liquor, the weight/mass percentage composition of acrylamide is 10%,
The weight/mass percentage composition of ammonium polyacrylate is 2%, and the mass ratio of acrylamide and N, N'- methylene-bisacrylamide is 10:1.
(2) quality is added in pre-mixing liquor for 3/5ths Zirconium powder, Jing after ball milling mixing 30 minutes, is added
Remaining 2/5ths Zirconium powder, continues ball milling 24 hours, then evacuation degasification 20 minutes, then, at 22 DEG C
Under the conditions of sequentially add catalyst and initiator, and stir 1 minute respectively, obtain the ceramic size that viscosity is 200mPas.Its
In, catalyst is N, and N, N', N'- tetramethylethylenediamine, catalyst is 1 with the mass ratio of acrylamide:100；Initiator was
Ammonium sulfate, initiator is 1 with the mass ratio of acrylamide:100.
(3) under conditions of 22 DEG C, ceramic size is slowly injected in die cavity, until filling die cavity, treats that ceramic size coagulates
After gel, blank is formed.Wherein, the shiny surface of second substrate and the minimum range of the guide face of first substrate are 0.8 millimeter, are led
The roughness Ra of stream interface is 10.5 microns, and the specification of first substrate and second substrate is 300 × 390mm, the depth of die cavity
It is identical with the depth of the die cavity of embodiment 1.
(4) first the second substrate of casting mould removed, gently uncover blank one jiao, then toward blank and first
Clear water is sprayed between the guide face of substrate, then blank is uncovered from first substrate, so that blank demoulding.
(5) blank is dried to weightless 14% at 75 DEG C, it is 95% with humidity to be 28 DEG C in temperature by dry blank
Constant temperature and humidity sofening treatment 2.5 hours under conditions of RH, then it is sintered, obtain the potsherd that thickness is 0.32 millimeter.
The ceramic size for obtaining the present embodiment using the identical method of embodiment 1 fills the time of die cavity and is shown in Table 1.
Comparative example 1
The preparation process of the potsherd of comparative example 1 is as follows：
(1) viscosity is identical with (1) of embodiment 3 and (2) step for the preparation of ceramic size of 500mPas.
(2) under conditions of 22 DEG C, ceramic size is slowly injected in die cavity, until filling die cavity, treats that ceramic size coagulates
After gel, blank is formed.Wherein, the second substrate of casting mould two faces relative with first substrate are shiny surface,
The distance in second substrate two face relative with first substrate is 0.3 millimeter, and the specification of first substrate and second substrate is
The deep equality of 300 × 390mm, the depth of die cavity and the die cavity of embodiment 3.
(3) blank is removed from second substrate and first substrate, so that blank demoulding.
(4) blank is dried to weightless 12% at 70 DEG C, it is 90% with humidity to be 25 DEG C in temperature by dry blank
Constant temperature and humidity sofening treatment 3 hours under conditions of RH, then it is sintered, obtain the potsherd that thickness is 0.24 millimeter.
The ceramic size for obtaining comparative example 1 using the identical method of embodiment 1 fills the time of die cavity and is shown in Table 1.
Comparative example 2
The preparation process of the potsherd of comparative example 2 is as follows：
(1) viscosity is identical with (1) of embodiment 3 and (2) step for the preparation of ceramic size of 500mPas.
(2) under conditions of 22 DEG C, ceramic size is slowly injected in die cavity, until filling die cavity, treats that ceramic size coagulates
After gel, blank is formed.Wherein, the shiny surface of second substrate and the minimum range of the guide face of first substrate are 0.5 millimeter, are led
The roughness Ra of stream interface is 6 microns, and the specification of first substrate and second substrate is 300 × 390mm, the depth and reality of die cavity
Apply the deep equality of the die cavity of example 3.
(3) first the second substrate of casting mould removed, gently uncover blank one jiao, then toward blank and first
Clear water is sprayed between the guide face of substrate, then blank is uncovered from first substrate, so that blank demoulding.
(4) blank is dried to weightless 12% at 70 DEG C, it is 90% with humidity to be 25 DEG C in temperature by dry blank
Constant temperature and humidity sofening treatment 3 hours under conditions of RH, then it is sintered, obtain the potsherd that thickness is 0.4 millimeter.
The ceramic size for obtaining comparative example 2 using the identical method of embodiment 1 fills the time of die cavity and is shown in Table 1.
Table 1 fills the time of die cavity for the ceramic size of embodiment 1～6 and comparative example 1 and comparative example 2.
Table 1
| Time (second) | |
| Embodiment 1 | 125 |
| Embodiment 2 | 115 |
| Embodiment 3 | 122 |
| Embodiment 4 | 112 |
| Embodiment 5 | 128 |
| Embodiment 6 | 109 |
| Comparative example 1 | 540 |
| Comparative example 2 | 244 |
From table 1 it follows that it is at most only 128 seconds that the ceramic size of embodiment 1～6 fills the time of die cavity, and it is right
The ceramic size of ratio 1 and comparative example 2 fills the time of die cavity and is respectively 540 seconds and 244 seconds, significantly larger than embodiment 1～6
Ceramic size the injection molding time, exactly because the guide face of the first substrate of the casting mould of this embodiment 1～6 has
The effect of capillary water conservancy diversion so that the ceramic size of embodiment 1～6 can in the short period of time fill die cavity.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more concrete and detailed, but and
Can not therefore be construed as limiting the scope of the patent.It should be pointed out that for one of ordinary skill in the art comes
Say, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (10)
1. a kind of casting mould, it is characterised in that include：
First substrate, with guide face, is provided with multiple diversion grooves so that the roughness of the guide face on the guide face
For 6.3 microns～12.5 microns；
For the second substrate coordinated with the first substrate, with shiny surface, the shiny surface is used for and the guide face phase
To arranging；
Filler strip, for being held between the first substrate and the second substrate, and can with the first substrate, described
Two substrates are removably secured connection, and the filler strip can enclose to set to be formed jointly with the first substrate, the second substrate
Die cavity with an opening, when the filler strip is fixedly connected with the first substrate, the second substrate, the second substrate
Shiny surface be oppositely arranged with the guide face of the first substrate, and the shiny surface is with the minimum range of the guide face
0.2 millimeter～1.2 millimeters.
2. casting mould according to claim 1, it is characterised in that the first substrate and the second substrate are equal
For transparency carrier.
3. casting mould according to claim 1, it is characterised in that the roughness of the shiny surface is less than or equal to
0.6 micron.
4. a kind of preparation method of potsherd, it is characterised in that comprise the steps：
Ceramic size of the viscosity for 100mPas～5000mPas is provided；
The opening of the casting mould described in the ceramic size freely claims 1 to 3 any one is injected in die cavity,
After the ceramic slurry gel, blank is formed；
By the blank demoulding, then the blank is dried successively and is sintered, obtain the potsherd.
5. the preparation method of potsherd according to claim 4, it is characterised in that the first base of the casting mould
The guide face of plate is prepared by following steps：Blasting treatment is carried out to the surface of substrate, with the guide face described is obtained
One substrate.
6. the preparation method of potsherd according to claim 4, it is characterised in that be the step of by the blank demoulding：
First the second substrate of the casting mould is removed, then toward the blank and the first substrate guide face it
Between spray water, then the blank is separated with the first substrate.
7. the preparation method of potsherd according to claim 4, it is characterised in that be by the step that the blank is dried：
The blank is dried to the blank weightlessness 10%～15% at 60 DEG C～80 DEG C.
8. the preparation method of potsherd according to claim 4, it is characterised in that the step for being dried the blank it
Afterwards, before the step of sintering, also include by the dried blank temperature be 20 DEG C～30 DEG C and humidity be 80%RH～
Under conditions of 98%RH the step of constant temperature and humidity sofening treatment 2 hours～4 hours.
9. a kind of preparation method of hand-set lid, it is characterised in that comprise the steps：
Potsherd is prepared using the preparation method of potsherd described in claim 4～8 any one；
The potsherd is processed, the hand-set lid is obtained.
10. a kind of preparation method of mobile phone backboard, it is characterised in that comprise the steps：
Potsherd is prepared using the preparation method of potsherd described in claim 4～8 any one；
The potsherd is processed, the mobile phone backboard is obtained.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114643634A (en) * | 2022-03-22 | 2022-06-21 | 重庆臻宝实业有限公司 | Slip casting's vacuum mold |
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| JPH091523A (en) * | 1995-06-23 | 1997-01-07 | K:Kk | Molding method of concrete block and form thereof |
| CN101595536A (en) * | 2006-12-01 | 2009-12-02 | 西蒙公司 | The registered jack that termination variability reduces |
| CN104001856A (en) * | 2014-05-30 | 2014-08-27 | 张勇弢 | Preparation method of oxide ceramic composite shell for precision casting of titanium alloy |
| CN104527166A (en) * | 2014-11-24 | 2015-04-22 | 广东欧珀移动通信有限公司 | Housing, electronic apparatus, and manufacturing method of housing |
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| JPH091523A (en) * | 1995-06-23 | 1997-01-07 | K:Kk | Molding method of concrete block and form thereof |
| CN101595536A (en) * | 2006-12-01 | 2009-12-02 | 西蒙公司 | The registered jack that termination variability reduces |
| CN104001856A (en) * | 2014-05-30 | 2014-08-27 | 张勇弢 | Preparation method of oxide ceramic composite shell for precision casting of titanium alloy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114643634A (en) * | 2022-03-22 | 2022-06-21 | 重庆臻宝实业有限公司 | Slip casting's vacuum mold |
| CN114643634B (en) * | 2022-03-22 | 2022-11-29 | 重庆臻宝实业有限公司 | Slip casting's vacuum mold |
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