CN111978084A - Double-color ceramic injection process and double-color ceramic product - Google Patents

Double-color ceramic injection process and double-color ceramic product Download PDF

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Publication number
CN111978084A
CN111978084A CN202010916448.3A CN202010916448A CN111978084A CN 111978084 A CN111978084 A CN 111978084A CN 202010916448 A CN202010916448 A CN 202010916448A CN 111978084 A CN111978084 A CN 111978084A
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China
Prior art keywords
banburying
powder
mass
parts
color
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Inventor
吴国亮
刘锋
兰剑
袁云波
黄荣林
纪文义
何岳平
彭朝阳
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Dongguan CSG Ceramics Technology Co Ltd
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Dongguan CSG Ceramics Technology Co Ltd
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Priority to CN202010916448.3A priority Critical patent/CN111978084A/en
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    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
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    • B28—WORKING CEMENT, CLAY, OR STONE
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    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/24—Producing shaped prefabricated articles from the material by injection moulding
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Abstract

The invention relates to the technical field of ceramic parts, and particularly discloses a double-color ceramic injection process and a double-color ceramic part, wherein the double-color ceramic injection process comprises the following steps: performing ball milling, banburying and granulation on the interspersed powder to obtain interspersed particles; banburying and granulating the main powder to obtain main particles; performing double-color injection molding by using the decoration particles and the main body particles to obtain a semi-finished product; and carrying out glue discharging and sintering on the semi-finished product to obtain the double-color ceramic product. The invention provides a bicolor ceramic injection process and a bicolor ceramic product, which can solve the problem of single color of the traditional ceramic product and ensure the connection reliability of the joint of two color ceramic materials; meanwhile, one color area in the bicolor ceramic also has a certain conductive function.

Description

Double-color ceramic injection process and double-color ceramic product
Technical Field
The invention relates to the technical field of ceramic parts, in particular to a double-color ceramic injection process and a double-color ceramic part.
Background
Zirconia is chemically inert, has the properties of high melting point, high resistivity, high refractive index, low thermal expansion coefficient and the like, has become an important high-temperature resistant material, a ceramic insulating material and a ceramic opacifier, and is also a main raw material of artificial drills.
At present, most of products made of zirconia ceramic materials are monochromatic, such as pure black, pure white, pure pink or pure blue. If a double-color ceramic part is prepared, organic glue is generally used for bonding the ceramic parts with two colors, however, after a long time, the glue is easy to age, and finally the two ceramic parts are easy to loosen, so that the performance of the product is indirectly reduced (particularly, the product with higher air tightness requirement is greatly influenced).
Therefore, there is a need for improvement of the existing injection molding process to solve the problem of single color. Meanwhile, bicolor ceramics generally do not impart other functions besides color differences. Because of the properties of the two ceramic materials (the large difference of shrinkage rates exists during molding and sintering), the green body is easy to crack during co-firing, so that the yield of the product is low, and the ceramic material is generally prepared without co-firing process sintering (common products are cracked in batches, and the bonding force of the joint of the two materials is low, so that the ceramic material is easy to break off by hand); but are formed, sintered and processed respectively and then are bonded together by glue to form the product. When two ceramic materials are prepared into bicolor ceramic by a co-firing process, one ceramic material has a certain conductive function, which is rare.
Disclosure of Invention
One purpose of the invention is to provide a double-color ceramic injection process and a double-color ceramic product, which can solve the problem of single color of the traditional ceramic product and ensure the connection reliability of the joint of two color ceramic materials; meanwhile, one color area in the bicolor ceramic also has a certain conductive function.
To achieve the above objects, in one aspect, the present invention provides a bicolor ceramic injection process comprising:
performing ball milling, banburying and granulation on the interspersed powder to obtain interspersed particles;
banburying and granulating the main powder to obtain main particles;
performing double-color injection molding by using the decoration particles and the main body particles to obtain a semi-finished product;
and carrying out glue discharging and sintering on the semi-finished product to obtain the double-color ceramic product.
Preferably, the powder topping comprises:
yttrium-stabilized zirconia powder: 55 to 72 parts by mass, the size of D50 is 0.1 to 1 mu m;
conductive powder: 28 to 45 parts by mass of D50 with the size of 0.2 to 10 mu m;
sintering aid: 0 to 5 parts by mass.
Preferably, the ball milling, banburying and granulating are carried out on the decorated powder, and the obtained decorated particles comprise:
ball-milling the interspersed powder material to disperse and mix the components in the interspersed powder material;
arranging a decoration adhesive;
preparing 10-20 parts by mass of the decoration binder and 80-90 parts by mass of the decoration powder into decoration banburying rubber material;
putting the dotted and banburying rubber material into banburying equipment for banburying to obtain dotted and soft rubber material;
and (3) granulating the dotted soft rubber material to obtain dotted particles.
Preferably, the spot-decoration adhesive comprises:
polypropylene: 30 to 50 parts by mass;
ethylene vinyl acetate copolymer: 5 to 15 parts by mass;
polystyrene: 10 to 35 parts by mass;
paraffin wax: 15 to 40 parts by mass;
fatty acid: 1 to 5 parts by mass.
Preferably, the diameter of the dotted particles ranges from 3mm to 5 mm.
Preferably, the main powder is yttrium-stabilized zirconia powder, and the size of the yttrium-stabilized zirconia powder is 0.1-1 μm of the particle size of D50.
Preferably, the banburying and granulating of the main powder to obtain the main particles comprises:
configuring a body adhesive;
preparing 10-20 parts by mass of the main body binder and 80-90 parts by mass of the main body powder into a main body banburying rubber material;
putting the main body banburying rubber material into banburying equipment for banburying to obtain a main body soft rubber material; preferably, when the main banburying rubber material is banburied, the banburying temperature of the banburying equipment is 160-180 ℃, the banburying time is 120min, and the rotating speed is 30 r/min;
and granulating the main body soft rubber material to obtain the main body particles.
Preferably, the components contained in the main body binder and the mass ratio of each component are the same as those of the spot-decoration binder;
the diameter range of the body particle is the same as the diameter range of the dotted particle.
Preferably, the method further comprises the following steps:
and polishing the bicolor ceramic product.
In another aspect, the present invention provides a bi-colored ceramic article made by the bi-colored ceramic injection process described above.
The invention has the beneficial effects that: the utility model provides a two-color ceramic injection technology and two-color ceramic finished piece, carry out banburying granulation to decorate powder and main part powder respectively in order to obtain the large-size and decorate granule and main part granule after, reuse two-color injection technology makes and decorate granule and main part granule fully to combine, and then can solve traditional ceramic finished piece single problem of colour, can guarantee the reliability of two kinds of colour ceramic material junction connections again, and the electric conduction zone resistance is below 1 omega.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a flow chart of a two-color ceramic injection process provided by an embodiment.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.
Furthermore, the terms "long", "short", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the referred devices or elements must have the specific orientations, be configured to operate in the specific orientations, and thus are not to be construed as limitations of the present invention.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Referring to fig. 1, the present embodiment provides a two-color ceramic injection process for manufacturing a two-color ceramic product, which includes the following steps:
s10: and carrying out ball milling, banburying and granulation on the decorated powder to obtain decorated particles.
Wherein, the powder material of decorating includes:
yttrium-stabilized zirconia powder: 55 to 72 parts by mass, and the size of D50 is 0.1 to 1 μm (at least 50% of particles have a diameter of 0.1 to 1 μm);
conductive powder: 28 to 45 parts by mass of D50 with the size of 0.2 to 10 mu m; optionally, the conductive powder comprises at least one of titanium carbide, titanium boride, titanium nitride and the like; the texture of the bicolor ceramic product can be improved by adding the conductive powder;
sintering aid: 0 to 5 parts by mass; optionally, the sintering aid is at least one of silicon oxide, yttrium oxide, iron oxide, cobalt oxide, magnesium oxide, and the like.
Specifically, S10 includes:
s101: ball-milling the interspersed powder material to disperse and mix the components in the interspersed powder material; it will be appreciated that ball milling facilitates thorough mixing of the components; preferably, the mixing time is between 0.5h and 24h, which is sufficient to allow the components of the above size in the decorated powder to be thoroughly dispersed and mixed;
s102: arranging a decoration adhesive; the dispersion of the dispersion powder is realized by adding dispersion binder, so as to obtain dispersion particles with larger size; optionally, in this embodiment, the dotted adhesive includes:
polypropylene (PP): 30 to 50 parts by mass;
ethylene vinyl acetate copolymer (EVA): 5 to 15 parts by mass;
polystyrene (PS): 10 to 35 parts by mass;
paraffin wax: 15 to 40 parts by mass;
fatty acid: 1 to 5 parts by mass.
S103: preparing 10-20 parts by mass of the decoration binder and 80-90 parts by mass of the decoration powder into decoration banburying rubber material;
s104: putting the dotted and banburying rubber material into banburying equipment for banburying to obtain dotted and soft rubber material; preferably, when the point banburying rubber material is banburied, the banburying temperature of the banburying equipment is 160-180 ℃, the banburying time is 120min, and the rotating speed is 30 r/min;
s105: and putting the dotted soft rubber material into a granulator for granulation to obtain the dotted particles.
It can be understood that the conductive powder, the sintering aid and the like are mixed into the yttrium-stabilized zirconia powder, so that the decorated powder has various colors and higher texture, and a bicolor ceramic product obtained after sintering has conductive performance.
S20: and banburying and granulating the main powder to obtain main particles.
Specifically, S20 includes:
s201: configuring a body adhesive; preferably, the main powder is yttrium-stabilized zirconia powder, and the size of the yttrium-stabilized zirconia powder is D50, and the particle size of the yttrium-stabilized zirconia powder is 0.1-1 um.
S202: preparing 10-20 parts by mass of the main body binder and 80-90 parts by mass of the main body powder into a main body banburying rubber material; preferably, the components contained in the main body binder and the mass ratio of each component are the same as those of the spot-decoration binder; the main body binder and the decoration binder have the same composition, so that the main body particles and the decoration particles can be fully bonded in the subsequent double-color injection, no gap is formed at the joint of the main body binder and the decoration particles, and the reliability of the joint is improved;
s203: putting the main body banburying rubber material into banburying equipment for banburying to obtain a main body soft rubber material; preferably, when the main banburying rubber material is banburied, the banburying temperature of the banburying equipment is 160-180 ℃, the banburying time is 120min, and the rotating speed is 30 r/min;
s204: granulating the main body soft rubber material to obtain main body particles; preferably, the diameter range of the body particle is the same as the diameter range of the dotted particle.
It should be noted that the size, binder composition, banburying parameters and diameter range after granulation of the yttrium-stabilized zirconia powder between the main powder and the interspersed powder are the same, so that the reliability of the two-color injection can be further improved, the two powders can be combined into a unified whole, and the fatal defects such as cracks and the like are not easy to occur at the joint.
S30: performing double-color injection molding by using the decoration particles and the main body particles to obtain a semi-finished product; preferably, the injection temperature is 150-180 ℃, and the injection pressure is 40-100 MPa.
It is concluded from a number of experiments that the injection parameters described above can be used to maximize the reliability of the bonding between the decorated particles and the host particles without any gaps at the bonding sites for the various component ratios used in this example.
S40: and carrying out glue discharging and sintering on the semi-finished product to obtain the double-color ceramic product.
Preferably, the maximum temperature of the discharged rubber is 300 ℃.
In this embodiment, there are two sintering processes:
firstly, a high-temperature vacuum atmosphere furnace is used, the sintering temperature is 1450-1650 ℃, and the heat preservation time is 1-8 h;
secondly, a hydrogen sintering furnace is used, mixed gas (hydrogen and nitrogen in a ratio of 2:8) is introduced, the sintering temperature is 1400-1600 ℃, and the heat preservation time is 1-8 h.
The binder removal sintering temperature can ensure that the binding between the decoration particles and the main body particles is most reliable, and no gap is generated at the binding part of the decoration particles and the main body particles.
S50: and polishing the bicolor ceramic product.
After the conductive area containing the conductive powder is polished, the conductive area is black with a slightly dark golden texture when viewed from the top, and is black and gray with a slightly silvery texture when viewed from the side or obliquely, so that the conductive area has excellent texture and grade. Further, the resistance of the conductive region corresponding to the conductive powder is below 1 Ω.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A bi-color ceramic injection process, comprising:
performing ball milling, banburying and granulation on the interspersed powder to obtain interspersed particles;
banburying and granulating the main powder to obtain main particles;
performing double-color injection molding by using the decoration particles and the main body particles to obtain a semi-finished product;
and carrying out glue discharging and sintering on the semi-finished product to obtain the double-color ceramic product.
2. The bi-color ceramic injection process of claim 1, wherein the interspersing powder comprises:
yttrium-stabilized zirconia powder: 55 to 72 parts by mass, the size of D50 is 0.1 to 1 mu m;
conductive powder: 28 to 45 parts by mass of D50 with the size of 0.2 to 10 mu m;
sintering aid: 0 to 5 parts by mass.
3. The dual-color ceramic injection process of claim 2, wherein the ball milling, banburying and granulating the decorated powder to obtain decorated particles comprises:
ball-milling the interspersed powder material to disperse and mix the components in the interspersed powder material;
arranging a decoration adhesive;
preparing 10-20 parts by mass of the decoration binder and 80-90 parts by mass of the decoration powder into decoration banburying rubber material;
putting the dotted and banburying rubber material into banburying equipment for banburying to obtain dotted and soft rubber material;
and (3) granulating the dotted soft rubber material to obtain dotted particles.
4. The bi-color ceramic injection process of claim 3, wherein the spot adhesive comprises:
polypropylene: 30 to 50 parts by mass;
ethylene vinyl acetate copolymer: 5 to 15 parts by mass;
polystyrene: 10 to 35 parts by mass;
paraffin wax: 15 to 40 parts by mass;
fatty acid: 1 to 5 parts by mass.
5. The bi-color ceramic injection process of claim 4, wherein the diameter of the interspersed particles ranges from 3mm to 5 mm.
6. The bi-color ceramic injection process of claim 5, wherein the bulk powder is yttrium-stabilized zirconia powder having a D50 particle size of 0.1 μm to 1 μm.
7. The two-color ceramic injection process of claim 6, wherein the banburying and granulating a host powder to obtain a host granule comprises:
configuring a body adhesive;
preparing 10-20 parts by mass of the main body binder and 80-90 parts by mass of the main body powder into a main body banburying rubber material;
putting the main body banburying rubber material into banburying equipment for banburying to obtain a main body soft rubber material; preferably, when the main banburying rubber material is banburied, the banburying temperature of the banburying equipment is 160-180 ℃, the banburying time is 120min, and the rotating speed is 30 r/min;
and granulating the main body soft rubber material to obtain the main body particles.
8. The bi-color ceramic injection process of claim 7, wherein the main body binder comprises the same components and the same mass ratio of the components as the spot-decoration binder;
the diameter range of the body particle is the same as the diameter range of the dotted particle.
9. The bi-color ceramic injection process of claim 2, further comprising:
and polishing the bicolor ceramic product.
10. A bi-colored ceramic article made by the bi-colored ceramic injection process of any one of claims 1 to 9.
CN202010916448.3A 2020-09-03 2020-09-03 Double-color ceramic injection process and double-color ceramic product Pending CN111978084A (en)

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US5935515A (en) * 1994-09-12 1999-08-10 Basf Aktiengesellschaft Process for the production of polychrome ceramic shaped parts
CN101857433A (en) * 2010-05-13 2010-10-13 清华大学 Method for preparing colored zirconium oxide ceramic component
JP2014012615A (en) * 2012-07-04 2014-01-23 Tosoh Corp Manufacturing method of ceramic jointed body, and decoration member
CN105130503A (en) * 2015-09-02 2015-12-09 德化县宏顺陶瓷有限公司 Two-color cloud pattern ceramic formed through two-color pouring at same time
CN106470643A (en) * 2014-07-09 2017-03-01 陶瓷技术有限责任公司 The hip cotyle of the full pottery in the set face of the dorsal part with porous
CN106927820A (en) * 2017-03-24 2017-07-07 南京云启金锐新材料有限公司 High-purity high-strength high-ductility zirconia composite ceramics structural member and preparation method thereof
CN108162139A (en) * 2016-12-14 2018-06-15 蓝思科技（长沙）有限公司 A kind of method of ceramics double-shot moulding and double-colored ceramic
CN109704758A (en) * 2019-02-26 2019-05-03 九江嘉远科技有限公司 A kind of anti-static ceramic formula, anti-static ceramic suction nozzle and its manufacture craft

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5935515A (en) * 1994-09-12 1999-08-10 Basf Aktiengesellschaft Process for the production of polychrome ceramic shaped parts
CN101857433A (en) * 2010-05-13 2010-10-13 清华大学 Method for preparing colored zirconium oxide ceramic component
JP2014012615A (en) * 2012-07-04 2014-01-23 Tosoh Corp Manufacturing method of ceramic jointed body, and decoration member
CN106470643A (en) * 2014-07-09 2017-03-01 陶瓷技术有限责任公司 The hip cotyle of the full pottery in the set face of the dorsal part with porous
CN105130503A (en) * 2015-09-02 2015-12-09 德化县宏顺陶瓷有限公司 Two-color cloud pattern ceramic formed through two-color pouring at same time
CN108162139A (en) * 2016-12-14 2018-06-15 蓝思科技（长沙）有限公司 A kind of method of ceramics double-shot moulding and double-colored ceramic
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Application publication date: 20201124