CN106584640B - The preparation method of casting mold and potsherd, hand-set lid and mobile phone backboard - Google Patents
The preparation method of casting mold and potsherd, hand-set lid and mobile phone backboard Download PDFInfo
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- CN106584640B CN106584640B CN201611116947.4A CN201611116947A CN106584640B CN 106584640 B CN106584640 B CN 106584640B CN 201611116947 A CN201611116947 A CN 201611116947A CN 106584640 B CN106584640 B CN 106584640B
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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
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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
- 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
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Signal Processing (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Producing Shaped Articles From Materials (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The present invention relates to the preparation methods of a kind of casting mold and potsherd, hand-set lid and mobile phone backboard.The casting mold includes first substrate, the second substrate and cushion block, and first substrate has guide face, is provided with multiple diversion grooves on guide face so that the roughness of guide face is 6.3 microns~12.5 microns；The second substrate is used to cooperate with first substrate, and the second substrate has shiny surface, and shiny surface with guide face for being oppositely arranged；Filler strip, for being held between first substrate and the second substrate, and it can be removably secured and connect with first substrate, the second substrate, and filler strip can enclose jointly with first substrate, the second substrate and set to form the die cavity with an opening, when filler strip is fixedly connected with the first substrate, the second substrate, the shiny surface of the second substrate and the guide face of first substrate are oppositely arranged, and the minimum range of shiny surface and guide face is 0.2 millimeter~1.2 millimeters.Above-mentioned casting mold can reduce energy consumption.
Description
Technical field
The present invention relates to the technical field of ceramic forming material mold and ceramic, in particular to one kind is injection molded as pattern
Preparation method, the preparation method of the preparation method of hand-set lid and mobile phone backboard of tool and potsherd.
Background technique
In general, gel casting forming is suitable for preparing ceramic green sheet with a thickness of 0.6mm~10mm, due to gel injection-moulding at
Type relies primarily on gravity as power source, and to prepare the mould that relatively narrow die cavity is needed when thickness is lower than the ceramic green sheet of 0.6mm
Tool, and this relatively narrow die cavity can make slurry be difficult to only flow under gravity inside it, need to apply external force to guarantee
The smooth inflow of slurry and flow velocity, increase energy consumption.
Summary of the invention
Based on this, it is necessary to provide a kind of casting mold that can reduce energy consumption.
In addition, 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 mold, comprising:
First substrate, has guide face, be provided with multiple diversion grooves on the guide face so that the guide face it is thick
Rugosity is 6.3 microns~12.5 microns；
The second substrate for cooperating with the first substrate, has shiny surface, and 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
It states the second substrate and is removably secured connection, and the filler strip can be enclosed jointly and be 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 and the guide face of the first substrate are oppositely arranged, and the minimum range of the shiny surface and the guide face
It is 0.2 millimeter~1.2 millimeters.
The first substrate and the second substrate are transparent substrate in one of the embodiments,.
The roughness of the shiny surface is less than or equal to 0.6 micron in one of the embodiments,.
A kind of preparation method of potsherd, includes the following steps:
The ceramic slurry that viscosity is 100mPas~5000mPas is provided；
By the ceramic slurry from the opening injection die cavity of above-mentioned casting mold, to the ceramic slurry gel
Afterwards, blank is formed；
By the blank demoulding, then by the blank successively drying and sintering, obtain the potsherd.
The guide face of the first substrate of the casting mold is prepared by the following steps in one of the embodiments:
Blasting treatment is carried out to the surface of substrate, obtains the first substrate with the guide face.
In one of the embodiments, by blank demoulding the step of are as follows: first will be described in the casting mold
The second substrate is removed, then toward spray water between the blank and the guide face of the first substrate, then by the blank and institute
State first substrate separation.
The step that the blank is dry in one of the embodiments, are as follows: do the blank at 60 DEG C~80 DEG C
It dries at dry to 60 DEG C~80 DEG C to the blank weightlessness 10%~15%.
In one of the embodiments, by after the dry step of the blank, the step of sintering before, further include that will do
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, includes the following steps:
Potsherd is prepared using the preparation method of above-mentioned potsherd；
The potsherd is handled, the hand-set lid is obtained.
A kind of preparation method of mobile phone backboard, includes the following steps:
Potsherd is prepared using the preparation method of above-mentioned potsherd；
The potsherd is handled, the mobile phone backboard is obtained.
Due to having multiple diversion grooves, the light of the second substrate on the guide face of the first substrate of above-mentioned casting mold
Sliding surface with guide face for being oppositely arranged, and filler strip is used to be held between first substrate and the second substrate, and can be with first
Substrate, the second substrate are removably secured connection, and filler strip can enclose to set to be formed with one jointly with first substrate, the second substrate
The die cavity of opening, and when filler strip is fixedly connected with first substrate, the second substrate, the shiny surface of the second substrate and first substrate
Guide face is oppositely arranged, i.e. guide face and the shiny surface opposite side wall that is respectively the die cavity of injection forming mold, and due to leading
Multiple diversion grooves are provided on stream interface so that the roughness of guide face is 6.3 microns~12.5 microns, so that diversion groove rises
To the effect of capillary water conservancy diversion, and guarantee to have the ceramic slurry of certain viscosity only under gravity 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)
In mold quickly and be smoothly flowed into die cavity, without applying external force again, energy consumption is lower, and filler strip can be with the first base
Plate, the second substrate are removably secured connection, so that molding green body encloses jointly in filler strip and first substrate, the second substrate sets shape
At die cavity in can demoulding, realize casting mold function.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the casting mold 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 hand-set lid shown in Fig. 2.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give preferred embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more saturating
It is thorough comprehensive.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
As shown in Figure 1, the casting mold 100 of an embodiment, is no more than 0.6 millimeter especially suitable for production thickness
Ceramic green sheet.The casting mold 100 includes first substrate 110, the second substrate 120 and filler strip 130.
First substrate 110 and the second substrate 120 are transparent substrate, in order to observe the inflow situation of slurry.In this reality
It applies in example, first substrate 110 and the second substrate 120 are glass substrate.Specifically in the illustrated embodiment, 110 He of first substrate
The second substrate 120 is rectangular plate, and the length, width and height of first substrate 110 and the second substrate 120 are equal.It is appreciated that the
The shape of one substrate 110 and the second substrate 120 is also not necessarily limited to as rectangular plate, the shape of first substrate 110 and the second substrate 120
It is adjusted according to specific needs.
First substrate 110 has guide face 112, is provided with multiple diversion groove (not shown) so that guide face on guide face
112 roughness Ra is 6.3 microns~12.5 microns.Since ceramic slurry generally all has certain viscosity, and the mould of mold
The width of chamber 140 is only 0.2 millimeter~1.2 millimeters, if the roughness of guide face 112 is too small, it cannot be guaranteed that slurry is in gravity
Under the action of quickly and smoothly flow into, need to apply external force to guarantee the inflow of slurry；If the coarse of guide face 112 is spent
Greatly, the surface roughness that will lead to the potsherd produced with this mold is larger, causes the finish of potsherd poor, without
Preferably product is used as to use.And 6.3 microns~12.5 microns are set by the roughness Ra of guide face 112, water conservancy diversion can not only be made
Groove plays the role of capillary drainage, guarantees that slurry is only smoothly flowed along diversion groove under gravity, while can also
Enough guarantee the finish on the surface for the potsherd produced.
Wherein, which is obtained by blasting treatment, thus to form rough guide face 112, so that whole
A guide face 112 is a rough structure.
The second substrate 120 is used to cooperate with first substrate 110.The second substrate 120 has shiny surface 122, the shiny surface 122
For being oppositely arranged with guide face 112.
It is suitable in order to green body and the second substrate 120 specifically, the roughness of shiny surface 122 is less than or equal to 0.6 micron
Benefit separation.
Filler strip 130, and can be with first substrate 110, for being held between first substrate 110 and the second substrate 120
Two substrates 120 are removably secured connection, and filler strip 130 can enclose to set to be formed jointly with first substrate 110, the second substrate 120
Die cavity 140 with an opening.When filler strip 130 is fixedly connected with first substrate 110, the second substrate 120, the second substrate 120
Shiny surface 122 and the guide face 112 of first substrate 110 be oppositely arranged, and the minimum range of shiny surface and guide face be 0.2 milli
Rice~1.2 millimeters, i.e. substantially 0.2 millimeter~1.2 millimeters of the width of die cavity 140.
Wherein, the material of filler strip 130 is stainless steel.The substantially U-shaped of filler strip 130.It is appreciated that filler strip 130 is also unlimited
In for above structure, the construction of filler strip 130 is according to specific needs or the shape of first substrate 110 and the second substrate 120 carries out
Adjustment.
In the present embodiment, first substrate 110 and 120 bundled fixed of the second substrate are realized first using bandage 150
Substrate 110, the second substrate 120 and filler strip 130 are removably secured connection.It is appreciated that fixture can also be used the first base
Plate 110 and the second substrate 120 are fixed together and realize that first substrate 110, the 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 mold 100, the
The shiny surface 122 of two substrates 120 with guide face 112 for being oppositely arranged, and filler strip 130 is for being held on 110 He of first substrate
Between the second substrate 120, and it can be removably secured and connect with first substrate 110, the second substrate 120, and filler strip 130 can
It is enclosed jointly with first substrate 110, the second substrate 120 and sets to form the die cavity 140 with an opening, and work as filler strip 130 and the first base
When plate 110, the second substrate 120 are fixedly connected, 112 phase of guide face of the shiny surface 122 and first substrate 110 of the second substrate 120
To setting, the i.e. opposite side wall of guide face 112 and the shiny surface 122 respectively die cavity 140 of injection forming mold, and due to leading
Multiple diversion grooves are provided on stream interface 112 so that and guide face 112 roughness be 6.3 microns~12.5 microns, so as to lead
Stream groove plays the role of capillary water conservancy diversion, and guarantees to have the ceramic slurry of certain viscosity only under gravity can be
The minimum range of shiny surface 122 and guide face 112 be 0.2 millimeter~1.2 millimeters (i.e. 140 width of die cavity be only 0.2 millimeter~
1.2 millimeters) casting mold 100 in quickly and be smoothly flowed into die cavity 140, without applying external force, energy consumption again
It is lower, and filler strip 130 can be removably secured and connect with first substrate 110, the second substrate 120, so that molding green body exists
Filler strip 130 and first substrate 110, the second substrate 120 enclose jointly set in the die cavity 140 to be formed can demoulding, realize casting
The function of mold 100.
As shown in Fig. 2, the preparation method of the hand-set lid of an embodiment, includes the following steps:
Step S210: potsherd is prepared.
Wherein, as shown in figure 3, the potsherd of step S210 the preparation method is as follows:
Step S212: the ceramic slurry that viscosity is 100mPas~5000mPas is provided.
In the present embodiment, the preparation step of ceramic slurry are as follows: by organic monomer, crosslinking agent, dispersing agent, solvent and ceramics
Powder mixing, adds catalyst and initiator, forms the ceramic slurry that viscosity is 100mPas~5000mPas.
Wherein, the step of organic monomer, crosslinking agent, dispersing agent, solvent and ceramic powder being mixed specifically: by organic list
Body, crosslinking agent, dispersing agent and solvent mixing, and pH value is adjusted to 9~10, obtain pre-mixing liquor；Ceramic powder is added to prewired
It is mixed in liquid, catalyst and initiator is then added under conditions of 22 DEG C~28 DEG C, obtains ceramic slurry.
Wherein, the purpose that catalyst and initiator are added under conditions of 22 DEG C~28 DEG C is that ceramic slurry is solidifying in order to prevent
Gelatinization, in order to subsequent injection molding.
In the present embodiment, organic monomer is acrylamide, Methacrylamide or hydroxymethyl acrylamide；Crosslinking agent is
N, N'- methylene-bisacrylamide or poly- (ethylene glycol) methacrylate；Dispersing agent is selected from ammonium polyacrylate, lemon
One of sour ammonia and polyethylene glycol；Solvent is water；Ceramic powder for example can be zirconia powder material；Catalyst is N, N, N',
N'- tetramethylethylenediamine；Initiator is ammonium persulfate.
Wherein, in pre-mixing liquor, the mass percentage of organic monomer is 10~20%, the mass percentage of dispersing agent
It is 2~5%, the mass ratio of organic monomer and crosslinking agent is 10:1~40:1；The mass ratio of catalyst and organic monomer is 0.1:
100~2:100；The mass ratio of initiator and organic monomer is 0.1:100~2:100.
Wherein, adjusting the reagent that pH value is used to 9~10 is ammonium hydroxide.
Wherein, step ceramic powder being added in pre-mixing liquor specifically: by 3/5ths ceramic powder with it is prewired
After liquid ball milling mixing 30 minutes, adds remaining ceramic powder and continue ball milling 18 hours~24 hours.Due to will disposably make pottery
Ceramic powder is all added and is difficult to be mixed into uniform slurry, and first by 3/5ths ceramic powder and pre-mixing liquor ball milling mixing,
It adds remaining 2/5ths and continues ball milling, uniform slurry is conveniently prepared.
Wherein, after ceramic powder to be added to the step of mixing in pre-mixing liquor, the step of catalyst and initiator is added
Before rapid, further include the steps that the mixed liquor by ceramic powder and pre-mixing liquor vacuumizes degasification.Specifically, vacuumize degasification 10~
30 minutes.
It is appreciated that ceramic slurry is also not necessarily limited to can according to need the specific ceramic slurry of selection for above-mentioned ceramic slurry
Material, as long as the viscosity of ceramic slurry is 100mPas~5000mPas.
Step S214: by ceramic slurry from the opening injection die cavity of casting mold, after ceramic slurry gel,
Form blank.
Wherein, further include casting mold first substrate guide face forming step: substrate to be processed is provided, it is right
The surface of substrate carries out blasting treatment, obtains the first substrate of the guide face with above structure.
Wherein, temperature when ceramic slurry being injected in die cavity is 22 DEG C~28 DEG C, to prevent ceramic slurry from injecting
Gelation occurs in journey.Specifically, ceramic slurry gel carries out at normal temperatures and pressures.
Wherein, when ceramic slurry being injected die cavity, the speed in the injection die cavity of ceramic slurry need to be controlled, to avoid injection
Bubble is sputtered in the process.
Step S216: by blank demoulding, then by blank successively drying and sintering, potsherd is obtained.
Wherein, by blank demoulding the step of are as follows: first remove the second substrate of casting mold, then toward blank and
Spray water between the guide face of one substrate, then blank is separated with first substrate.Since the face that the second substrate is contacted with blank is
Shiny surface, therefore, the second substrate are easy to separate with blank；And the face that first substrate is contacted with blank is guide face, it is more difficult to point
From, by between guide face and blank spray water blank can be made to separate simplerly with first substrate.
Wherein, the step that blank is dry are as follows: blank is dried at 60 DEG C~80 DEG C to blank weightlessness 10%~15%,
I.e. weight loss is 10%~15%.
Wherein, by after the dry step of blank, the step of sintering before, further include blank that will dry in temperature be 20
DEG C~30 DEG C and humidity be 80%RH~98%RH under conditions of constant temperature and humidity sofening treatment 2 hours~4 hours the step of.Its
In, %RH indicates relative humidity.There is certain volume contraction during due to blank drying, if blank has not been completely dried
It just cuts, it would be possible that the potsherd size finally obtained has very big error, and the blank after drying is very crisp very hard, passes through
First will blank it is dry after be placed in after blank can soften after moisturizing dampness in climatic chamber again, be not only convenient for punching molding, and
And it can be effectively prevented from directly to large error caused by the cutting of wet base.
The preparation method of above-mentioned potsherd by using above structure casting mold so that viscosity be 100mPa
The ceramic slurry of s~5000mPas can be only quick under gravity and be smoothly flowed into die cavity, without applying
Add external force, reduces production energy consumption.And the preparation method of above-mentioned potsherd is easy to operate, it is easy to industrialized production.
It is appreciated that the method for preparing potsherd is not limited to the method using upper gel casting forming, it can also be using stream
Prolong or dry-pressing, however casting apparatus is expensive, at high cost, sintering briquette intensity is lower than the sintering briquette intensity of gel forming (because slurry configures
When, much higher than tape casting of gel forming solid content), and it is dry-pressing formed be also easy to produce stomata, intensity is also not so good as gel forming
Obtained blank, and post-production is complicated, it is more to need to be thinned the thickness removed, therefore, in the present embodiment, preferably gel
The method of casting prepares potsherd.
Step S220: potsherd is handled, and obtains hand-set lid.
Wherein, the step of potsherd being handled specifically: by potsherd cutting, grinding and buffing, to obtain in one's hands
Cover plate.
The potsherd as used in the preparation method of the hand-set lid is prepared by the preparation method of above-mentioned potsherd
It arrives, there is lower production 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 handled to obtain mobile phone backboard using the potsherd being prepared with present embodiment.
The following are specific embodiment part, following embodiment is pottery by organic monomer, Zirconium powder of acrylic acid amides
Ceramic powder illustrates:
Embodiment 1
The preparation process of the potsherd of the present embodiment is as follows:
(1) by acrylamide, N, N'- methylene-bisacrylamide and ammonium polyacrylate add deionized water to be stirred, make
PH value is adjusted to 9 with ammonium hydroxide, obtains pre-mixing liquor, wherein in pre-mixing liquor, the mass percentage of acrylamide is 15%,
The mass percentage of ammonium polyacrylate is 3%, and the mass ratio of acrylamide and N, N'- methylene-bisacrylamide is 25:1.
(2) by quality be 3/5ths Zirconium powder and after pre-mixing liquor ball milling mixing 30 minutes, be added remaining five
/ bis- Zirconium powder, continue ball milling 21 hours, then vacuumize 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 slurry that viscosity is 100mPas.Wherein, it is catalyzed
Agent is N, N, N', N'- tetramethylethylenediamine, and the mass ratio of catalyst and acrylamide is 1:100；Initiator is ammonium persulfate,
The mass ratio of initiator and acrylamide is 1:100.
(3) under conditions of 25 DEG C, ceramic slurry is slowly injected into transparent die cavity, until die cavity is filled, to ceramic slurry
After expecting gelation, blank is formed.Wherein, the minimum range of the guide face of the shiny surface and first substrate of the second substrate is 0.2 milli
Rice, the roughness Ra of guide face is 12.5 microns, and the specification of first substrate and the second substrate is 300 × 390mm, die cavity
Depth is 280 millimeters.
(4) first the second substrate of casting mold is removed, one jiao for gently uncovering blank, 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 at 60 DEG C to weightlessness 10%, by dry blank be 20 DEG C in temperature and humidity is 80%
Constant temperature and humidity sofening treatment 4 hours under conditions of RH, then be sintered, obtain the potsherd with a thickness of 0.18 millimeter.
Using manual time-keeping, the ceramic slurry 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-bisacrylamide and ammonium polyacrylate add deionized water to be stirred, make
PH value is adjusted to 9 with ammonium hydroxide, obtains pre-mixing liquor, wherein in pre-mixing liquor, the mass percentage of acrylamide is 15%,
The mass percentage of ammonium polyacrylate is 3%, and the mass ratio of acrylamide and N, N'- methylene-bisacrylamide is 25:1.
(2) by quality be 3/5ths Zirconium powder and after pre-mixing liquor ball milling mixing 30 minutes, be added remaining five
/ bis- Zirconium powder, continue ball milling 18 hours, then vacuumize 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 slurry that viscosity is 5000mPas.Wherein, it is catalyzed
Agent is N, N, N', N'- tetramethylethylenediamine, and the mass ratio of catalyst and acrylamide is 1:100；Initiator is ammonium persulfate,
The mass ratio of initiator and acrylamide is 1:100.
(3) under conditions of 22 DEG C, ceramic slurry is slowly injected into die cavity, until die cavity is filled, it is solidifying to ceramic slurry
After gelatinization, blank is formed.Wherein, the minimum range of the guide face of the shiny surface and first substrate of the second substrate is 1.2 millimeters, is led
The roughness Ra of stream interface is 6.3 microns, and the specification of first substrate and the 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 mold is removed, one jiao for gently uncovering blank, 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 at 80 DEG C to weightlessness 10%, by dry blank be 30 DEG C in temperature and humidity is 98%
Constant temperature and humidity sofening treatment 2 hours under conditions of RH, then be sintered, obtain the potsherd with a thickness of 0.4 millimeter.
1 is shown in Table using the time that the ceramic slurry that the identical method of embodiment 1 obtains the present embodiment fills die cavity.
Embodiment 3
The preparation process of the potsherd of the present embodiment is as follows:
(1) by acrylamide, N, N'- methylene-bisacrylamide and ammonium polyacrylate add deionized water to be stirred, make
PH value is adjusted to 9 with ammonium hydroxide, obtains pre-mixing liquor, wherein in pre-mixing liquor, the mass percentage of acrylamide is 15%,
The mass percentage of ammonium polyacrylate is 3%, and the mass ratio of acrylamide and N, N'- methylene-bisacrylamide is 25:1.
(2) Zirconium powder that quality is 3/5ths is added in pre-mixing liquor, after ball milling mixing 30 minutes, is added
Remaining 2/5ths Zirconium powder continues ball milling 24 hours, degasification is then vacuumized 20 minutes, then, at 22 DEG C
Under the conditions of sequentially add catalyst and initiator, and respectively stir 1 minute, obtain viscosity be 500mPas ceramic slurry.Its
In, catalyst N, N, N', N'- tetramethylethylenediamine, the mass ratio of catalyst and acrylamide is 1:100；Initiator was
The mass ratio of ammonium sulfate, initiator and acrylamide is 1:100.
(3) under conditions of 22 DEG C, ceramic slurry is slowly injected into die cavity, until die cavity is filled, it is solidifying to ceramic slurry
After gelatinization, blank is formed.Wherein, the minimum range of the guide face of the shiny surface and first substrate of the second substrate is 0.5 millimeter, is led
The roughness Ra of stream interface is 9 microns, and the specification of first substrate and the 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 mold is removed, one jiao for gently uncovering blank, 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 at 70 DEG C to weightlessness 12%, by dry blank be 25 DEG C in temperature and humidity is 90%
Constant temperature and humidity sofening treatment 3 hours under conditions of RH, then be sintered, obtain the potsherd with a thickness of 0.24 millimeter.
1 is shown in Table using the time that the ceramic slurry that the identical method of embodiment 1 obtains the present embodiment fills die cavity.
Embodiment 4
The preparation process of the potsherd of the present embodiment is as follows:
(1) by acrylamide, N, N'- methylene-bisacrylamide and ammonium polyacrylate add deionized water to be stirred, make
PH value is adjusted to 9 with ammonium hydroxide, obtains pre-mixing liquor, wherein in pre-mixing liquor, the mass percentage of acrylamide is 15%,
The mass percentage of ammonium polyacrylate is 3%, and the mass ratio of acrylamide and N, N'- methylene-bisacrylamide is 25:1.
(2) Zirconium powder that quality is 3/5ths is added in pre-mixing liquor, after ball milling mixing 30 minutes, is added
Remaining 2/5ths Zirconium powder continues ball milling 24 hours, degasification is then vacuumized 20 minutes, then, at 28 DEG C
Under the conditions of sequentially add catalyst and initiator, and respectively stir 1 minute, obtain viscosity be 300mPas ceramic slurry.Its
In, catalyst N, N, N', N'- tetramethylethylenediamine, the mass ratio of catalyst and acrylamide is 1:100；Initiator was
The mass ratio of ammonium sulfate, initiator and acrylamide is 1:100.
(3) under conditions of 28 DEG C, ceramic slurry is slowly injected into die cavity, until die cavity is filled, it is solidifying to ceramic slurry
After gelatinization, blank is formed.Wherein, the minimum range of the guide face of the shiny surface and first substrate of the second substrate is 0.4 millimeter, is led
The roughness Ra of stream interface is 7 microns, and the specification of first substrate and the 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 mold is removed, one jiao for gently uncovering blank, 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 at 65 DEG C to weightlessness 13%, by dry blank be 26 DEG C in temperature and humidity is 85%
Constant temperature and humidity sofening treatment 3.5 hours under conditions of RH, then be sintered, obtain the potsherd with a thickness of 0.32 millimeter.
1 is shown in Table using the time that the ceramic slurry that the identical method of embodiment 1 obtains the present embodiment fills die cavity.
Embodiment 5
The preparation process of the potsherd of the present embodiment is as follows:
(1) by acrylamide, N, N'- methylene-bisacrylamide and ammonium polyacrylate add deionized water to be stirred, make
PH value is adjusted to 9 with ammonium hydroxide, obtains pre-mixing liquor, wherein in pre-mixing liquor, the mass percentage of acrylamide is 15%,
The mass percentage of ammonium polyacrylate is 3%, and the mass ratio of acrylamide and N, N'- methylene-bisacrylamide is 25:1.
(2) Zirconium powder that quality is 3/5ths is added in pre-mixing liquor, after ball milling mixing 30 minutes, is added
Remaining 2/5ths Zirconium powder continues ball milling 24 hours, degasification is then vacuumized 20 minutes, then, at 25 DEG C
Under the conditions of sequentially add catalyst and initiator, and respectively stir 1 minute, obtain viscosity be 1000mPas ceramic slurry.
Wherein, the mass ratio of catalyst N, N, N', N'- tetramethylethylenediamine, catalyst and acrylamide is 1:100；Initiator is
The mass ratio of ammonium persulfate, initiator and acrylamide is 1:100.
(3) under conditions of 25 DEG C, ceramic slurry is slowly injected into die cavity, until die cavity is filled, it is solidifying to ceramic slurry
After gelatinization, blank is formed.Wherein, the minimum range of the guide face of the shiny surface and first substrate of the second substrate is 0.4 millimeter, is led
The roughness Ra of stream interface is 8.5 microns, and the specification of first substrate and the 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 mold is removed, one jiao for gently uncovering blank, 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 at 75 DEG C to weightlessness 14%, by dry blank be 28 DEG C in temperature and humidity is 95%
Constant temperature and humidity sofening treatment 2.5 hours under conditions of RH, then be sintered, obtain the potsherd with a thickness of 0.32 millimeter.
1 is shown in Table using the time that the ceramic slurry that the identical method of embodiment 1 obtains the present embodiment fills die cavity.
Embodiment 6
The preparation process of the potsherd of the present embodiment is as follows:
(1) by acrylamide, N, N'- methylene-bisacrylamide and ammonium polyacrylate add deionized water to be stirred, make
PH value is adjusted to 10 with ammonium hydroxide, obtains pre-mixing liquor, wherein in pre-mixing liquor, the mass percentage of acrylamide is 10%,
The mass percentage of ammonium polyacrylate is 2%, and the mass ratio of acrylamide and N, N'- methylene-bisacrylamide is 10:1.
(2) Zirconium powder that quality is 3/5ths is added in pre-mixing liquor, after ball milling mixing 30 minutes, is added
Remaining 2/5ths Zirconium powder continues ball milling 24 hours, degasification is then vacuumized 20 minutes, then, at 22 DEG C
Under the conditions of sequentially add catalyst and initiator, and respectively stir 1 minute, obtain viscosity be 200mPas ceramic slurry.Its
In, catalyst N, N, N', N'- tetramethylethylenediamine, the mass ratio of catalyst and acrylamide is 1:100；Initiator was
The mass ratio of ammonium sulfate, initiator and acrylamide is 1:100.
(3) under conditions of 22 DEG C, ceramic slurry is slowly injected into die cavity, until die cavity is filled, it is solidifying to ceramic slurry
After gelatinization, blank is formed.Wherein, the minimum range of the guide face of the shiny surface and first substrate of the second substrate is 0.8 millimeter, is led
The roughness Ra of stream interface is 10.5 microns, and the specification of first substrate and the second substrate is 300 × 390mm, the depth of die cavity
It is identical as the depth of the die cavity of embodiment 1.
(4) first the second substrate of casting mold is removed, one jiao for gently uncovering blank, 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 at 75 DEG C to weightlessness 14%, by dry blank be 28 DEG C in temperature and humidity is 95%
Constant temperature and humidity sofening treatment 2.5 hours under conditions of RH, then be sintered, obtain the potsherd with a thickness of 0.32 millimeter.
1 is shown in Table using the time that the ceramic slurry that the identical method of embodiment 1 obtains the present embodiment fills die cavity.
Comparative example 1
The preparation process of the potsherd of comparative example 1 is as follows:
(1) viscosity is that the preparation of ceramic slurry of 500mPas is identical as (1) of embodiment 3 and (2) step.
(2) under conditions of 22 DEG C, ceramic slurry is slowly injected into die cavity, until die cavity is filled, it is solidifying to ceramic slurry
After gelatinization, blank is formed.Wherein, the second substrate of casting mold two faces opposite with first substrate are shiny surface,
It is 0.3 millimeter at a distance from the second substrate two faces opposite with first substrate, and the specification of first substrate and the second substrate is
300 × 390mm, the deep equality of the die cavity of the depth and embodiment 3 of die cavity.
(3) blank is removed from the second substrate and first substrate, so that blank demoulding.
(4) blank is dried at 70 DEG C to weightlessness 12%, by dry blank be 25 DEG C in temperature and humidity is 90%
Constant temperature and humidity sofening treatment 3 hours under conditions of RH, then be sintered, obtain the potsherd with a thickness of 0.24 millimeter.
1 is shown in Table using the time that the ceramic slurry that the identical method of embodiment 1 obtains comparative example 1 fills die cavity.
Comparative example 2
The preparation process of the potsherd of comparative example 2 is as follows:
(1) viscosity is that the preparation of ceramic slurry of 500mPas is identical as (1) of embodiment 3 and (2) step.
(2) under conditions of 22 DEG C, ceramic slurry is slowly injected into die cavity, until die cavity is filled, it is solidifying to ceramic slurry
After gelatinization, blank is formed.Wherein, the minimum range of the guide face of the shiny surface and first substrate of the second substrate is 0.5 millimeter, is led
The roughness Ra of stream interface is 6 microns, and the specification of first substrate and the 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 mold is removed, one jiao for gently uncovering blank, 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 at 70 DEG C to weightlessness 12%, by dry blank be 25 DEG C in temperature and humidity is 90%
Constant temperature and humidity sofening treatment 3 hours under conditions of RH, then be sintered, obtain the potsherd with a thickness of 0.4 millimeter.
1 is shown in Table using the time that the ceramic slurry that the identical method of embodiment 1 obtains comparative example 2 fills die cavity.
Table 1 fills the time of die cavity for the ceramic slurry of Examples 1 to 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 the time that the ceramic slurry of Examples 1 to 6 fills die cavity is at most only 128 seconds, and it is right
The time that the ceramic slurry of ratio 1 and comparative example 2 fills die cavity is respectively 540 seconds and 244 seconds, significantly larger than Examples 1 to 6
Ceramic slurry the injection molding time, exactly because the guide face of the first substrate of the casting mold of this Examples 1 to 6 has
The effect of capillary water conservancy diversion enables the ceramic slurry of Examples 1 to 6 to fill die cavity in a relatively short period of time.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies 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, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of casting mold characterized by comprising
First substrate, has guide face, be provided with multiple diversion grooves on the guide face so that the guide face roughness
It is 6.3 microns~12.5 microns；
The second substrate for cooperating with the first substrate, has shiny surface, and the shiny surface is used for and the guide face phase
To setting；
Filler strip, for being held between the first substrate and the second substrate, and can be 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
The guide face of shiny surface and the first substrate be oppositely arranged, and the minimum range of the shiny surface and the guide face is
0.2 millimeter~1.2 millimeters.
2. casting mold according to claim 1, which is characterized in that the first substrate and the second substrate are equal
For transparent substrate.
3. casting mold according to claim 1, which is characterized 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, which comprises the steps of:
The ceramic slurry that viscosity is 100mPas~5000mPas is provided；
The opening of casting mold described in the ceramic slurry 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 by the blank successively drying and sintering, obtain the potsherd.
5. the preparation method of potsherd according to claim 4, which is characterized in that the first base of the casting mold
The guide face of plate is prepared by the following steps: being carried out blasting treatment to the surface of substrate, is obtained having described the of the guide face
One substrate.
6. the preparation method of potsherd according to claim 4, which is characterized in that the step of by the blank demoulding are as follows:
First the second substrate of the casting mold is removed, then toward the guide face of the blank and the first substrate it
Between spray water, then the blank is separated with the first substrate.
7. the preparation method of potsherd according to claim 4, which is characterized in that by the step that the blank is dry are as follows:
The blank is dried at 60 DEG C~80 DEG C to the blank weightlessness 10%~15%.
8. the preparation method of potsherd according to claim 4, which is characterized in that by the dry step of the blank it
Afterwards, before the step of sintering, further include the blank after drying 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, which comprises the steps of:
Potsherd is prepared using the preparation method of potsherd described in claim 4~8 any one；
The potsherd is handled, the hand-set lid is obtained.
10. a kind of preparation method of mobile phone backboard, which comprises the steps of:
Potsherd is prepared using the preparation method of potsherd described in claim 4~8 any one；
The potsherd is handled, the mobile phone backboard is obtained.
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