CN102775713B - Preparation method of plastic die material for ceramic forming - Google Patents
Preparation method of plastic die material for ceramic forming Download PDFInfo
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- CN102775713B CN102775713B CN201210240782.7A CN201210240782A CN102775713B CN 102775713 B CN102775713 B CN 102775713B CN 201210240782 A CN201210240782 A CN 201210240782A CN 102775713 B CN102775713 B CN 102775713B
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Abstract
The invention relates to a preparation method of a plastic die material for ceramic forming. The preparation method of the plastic die material comprises the following steps of: 1) adding unsaturated polyester, methyl methacrylate and surfactant to a reaction kettle, controlling the temperature and agitating by a stirrer; 2) adding methyl methacrylate in batch for a plurality of times, and fastening the stirring speed at the same time; 3) adding dibenzoyl peroxide and inorganic powder, and continuing to stir; 4) adding salt and silica gel; and 5) slowly adding water and sodium dodecyl sulfate to a reaction system, fully stirring uniformly and curing at the room temperature. The plastic die material for the ceramic forming, obtained by the preparation method, has better hydroscopicity.
Description
Technical field
The present invention relates to pottery and ceramic die industry, be specifically related to the preparation method for the plastic mould material of forming process of ceramics.
background technology
Gypsum mold is the traditional moulds that domestic ceramics and sanitary pottery industrial production have been used since medium-term and long-term, because its cost of manufacture is cheap and self-characteristic, is still widely used at present in the moulding processs such as slip casting, spinning, roll extrusion, plastic compression (colding pressing).Along with ceramic industry is progressively to the development of mechanize and automatic production direction, the weak point of gypsum mold is also just more and more outstanding, low such as intensity, work-ing life is short etc.Meanwhile, because the quality of gypsum mold directly affects and determined the quality of molding blank, and final decision the quality of product.Therefore, the limitation that gypsum material itself exists, has restricted ceramic industry to high-quality, efficient future development.
Mould of plastics has excellent performance, for example lightweight, tough good springiness, good mechanical property, acid-alkali-corrosive-resisting, long service life etc., can carry out car, milling, plane, mill, brill, the various operations such as bonding, be applicable to various moulding processs, but there is the shortcomings such as water-absorbent is poor in existing mould of plastics, be difficult to meet the demand of ceramic molding, limited the use of mould of plastics in forming process of ceramics.
Summary of the invention
The present invention utilizes liquid phase pore-forming principle, and a kind of preparation method of the plastic mould material for forming process of ceramics is provided.
The preparation method of the plastic mould material for forming process of ceramics of the present invention, comprises the steps:
The first step, adds 1～2 part of 100 parts of unsaturated polyester, 20～30 parts of methyl methacrylates, tensio-active agent in reactor, controls temperature at 40 ℃～60 ℃, stirs 15～25 minutes;
Second step, adds 10～20 parts of polymethylmethacrylates in reactor, strengthens stirring velocity simultaneously, and churning time is 20～30 minutes;
The 3rd step, after polymethylmethacrylate is uniformly dispersed, adds 2～5 parts of 2～5 parts of dibenzoyl peroxide and mineral powders, continues to stir 15～30 minutes;
The 4th step, adds 10～40 parts, 2～5 parts of salt and silica gel, continues to strengthen stirring velocity;
The 5th step, continue to stir after 10～20 minutes, by system cooling, to reaction system, slowly added 2～5 parts of 10～70 parts, water and sodium laurylsulfonates, after stirring, and self-vulcanizing.
Step 2 when adding described polymethylmethacrylate in reactor, preferably repeatedly adds in batches.
More than one in the preferred calcium carbonate of described mineral powder, polynite, talcum powder or titanium dioxide.
More than one in the preferred thionamic acid sodium of described salt, tetrabutylammonium perchlorate sodium or disodium EDTA.
Described in step 5, cooling is preferably reduced to 0～10 ℃.
Increasing stirring velocity of the present invention is: as long as large than step 1 of the stirring velocity that guarantees step 2, the stirring velocity of step 4 is greater than the stirring velocity of step 2, to scope no requirement (NR).
The resulting forming process of ceramics of the present invention plastic mould material good water absorption, can meet the requirement of ceramic molding.
Accompanying drawing explanation
Fig. 1 is the photo that water droplet does not contact plastic mould material surface.
Fig. 2 is the photo behind water droplet contact plastic mould material surface.
Embodiment
Below in conjunction with embodiment, the present invention is done further and described in detail
Embodiment 1
The first step, adds 1 part of 100 parts of unsaturated polyester, 20 parts of methyl methacrylates, polysorbate in reactor, controls temperature at 40 ℃, with agitator, stirs 15 minutes.
Second step, adds 10 parts of polymethylmethacrylates in reactor, divides and adds for 3 times, strengthens stirring velocity simultaneously, and churning time is 30 minutes.
The 3rd step, after polymethylmethacrylate is uniformly dispersed, adds 5 parts, 5 parts of dibenzoyl peroxide and calcium carbonate, continues to stir 15 minutes.
The 4th step, adds 10 parts, 2 parts, thionamic acid sodium and silica gel, and now emulsion viscosity obviously increases, and should continue suitably to strengthen stirring velocity.
The 5th step, continue to stir after 10 minutes, and system is cooled to 10 ℃, to reaction system, slowly added 2 parts of 20 parts, water and sodium laurylsulfonates, after stirring, and self-vulcanizing.
Embodiment 2
The first step, adds 1 part of 100 parts of unsaturated polyester, 20 parts of methyl methacrylates, polysorbate in reactor, controls temperature at 45 ℃, with agitator, stirs 15 minutes.
Second step, adds 10 parts of polymethylmethacrylates in reactor, divides and adds for 3 times, strengthens stirring velocity simultaneously, and churning time is 20 minutes.
The 3rd step, after polymethylmethacrylate is uniformly dispersed, adds 4 parts of 4 parts of dibenzoyl peroxide and titanium dioxide, continues to stir 20 minutes.
The 4th step, adds 20 parts, 2 parts, thionamic acid sodium and silica gel, and now emulsion viscosity obviously increases, and should continue suitably to strengthen stirring velocity.
The 5th step, continue to stir after 10 minutes, and system is cooled to 10 ℃, to reaction system, slowly added 3 parts of 30 parts, water and sodium laurylsulfonates, after stirring, and self-vulcanizing.
Embodiment 3
The first step, adds 1.5 parts of 100 parts of unsaturated polyesters, 25 parts of methyl methacrylates, glycerin fatty acid ester in reactor, controls temperature at 50 ℃, with agitator, stirs 20 minutes.
Second step, adds 15 parts of polymethylmethacrylates in reactor, divides and adds for 4 times, strengthens stirring velocity simultaneously, and churning time is 25 minutes.
The 3rd step, after polymethylmethacrylate is uniformly dispersed, adds 3 parts, 3 parts of dibenzoyl peroxide and calcium carbonate, continues to stir 15 minutes.
The 4th step, adds 25 parts, 4 parts, tetrabutylammonium perchlorate sodium and silica gel, and now emulsion viscosity obviously increases, and should continue suitably to strengthen stirring velocity.
The 5th step, continue to stir after 15 minutes, and system is cooled to 5 ℃, to reaction system, slowly added 4 parts of 40 parts, water and sodium laurylsulfonates, after stirring, and self-vulcanizing.
Embodiment 4
The first step, adds 1.5 parts of 100 parts of unsaturated polyesters, 25 parts of methyl methacrylates, glycerin fatty acid ester in reactor, controls temperature at 55 ℃, with agitator, stirs 15 minutes.
Second step, adds 20 parts of polymethylmethacrylates in reactor, divides and adds for 5 times, strengthens stirring velocity simultaneously, and churning time is 20 minutes.
The 3rd step, after polymethylmethacrylate is uniformly dispersed, adds 3 parts of 3 parts of dibenzoyl peroxide and talcum powder, continues to stir 20 minutes.
The 4th step, adds 30 parts, 2 parts of disodium ethylene diamine tetraacetate and silica gel, and now emulsion viscosity obviously increases, and should continue suitably to strengthen stirring velocity.
The 5th step, continue to stir after 20 minutes, and system is cooled to 5 ℃, to reaction system, slowly added 5 parts of 50 parts, water and sodium laurylsulfonates, after stirring, and self-vulcanizing.
Embodiment 5
The first step, adds 2 parts of 100 parts of unsaturated polyesters, 30 parts of methyl methacrylates, glycerin fatty acid ester in reactor, controls temperature at 60 ℃, with agitator, stirs 25 minutes.
Second step, adds 15 parts of polymethylmethacrylates in reactor, divides and adds for 4 times, strengthens stirring velocity simultaneously, and churning time is 30 minutes.
The 3rd step, after polymethylmethacrylate is uniformly dispersed, adds 2 parts of 2 parts of dibenzoyl peroxide and polynites, continues to stir 15 minutes.
The 4th step, adds 40 parts, 5 parts, thionamic acid sodium and silica gel, and now emulsion viscosity obviously increases, and should continue suitably to strengthen stirring velocity.
The 5th step, continue to stir after 20 minutes, and system is cooled to 0 ℃, to reaction system, slowly added 2 parts of 70 parts, water and sodium laurylsulfonates, after stirring, and self-vulcanizing.
The plastic mould material obtaining according to above-described embodiment 1-5, measured respectively water at its surperficial surface contact angle, result shows when water droplet contact plastic mould material surface, water droplet is paved on mould of plastics surface soon, the surface contact angle of Gu Shui on plastic mould material surface is 0 °, this presentation of results, the resulting plastic mould material of the present invention has good water-absorbent.Measurement result is as shown in attached Fig. 1 and 2.Fig. 1 is the photo that water droplet does not contact plastic mould material surface, and Fig. 2 is the photo behind water droplet contact plastic mould material surface.
Claims (4)
1. for the preparation method of the plastic mould material of forming process of ceramics, comprise the steps:
The first step, adds 1～2 part of 100 parts of unsaturated polyester, 20～30 parts of methyl methacrylates, tensio-active agent in reactor, controls temperature at 40 ℃～60 ℃, stirs 15～25 minutes;
Second step, adds 10～20 parts of polymethylmethacrylates in reactor, strengthens stirring velocity simultaneously, and churning time is 20～30 minutes;
The 3rd step, after polymethylmethacrylate is uniformly dispersed, adds 2～5 parts of 2～5 parts of dibenzoyl peroxide and mineral powders, continues to stir 15～30 minutes;
The 4th step, adds 10～40 parts, 2～5 parts of salt and silica gel, continues to strengthen stirring velocity; Described salt comprises more than one in thionamic acid sodium, tetrabutylammonium perchlorate or disodium ethylene diamine tetraacetate;
The 5th step, continue to stir after 10～20 minutes, by system cooling, to reaction system, slowly added 2～5 parts of 10～70 parts, water and sodium laurylsulfonates, after stirring, and self-vulcanizing.
2. preparation method according to claim 1, is characterized in that, step 2 repeatedly adds when adding described polymethylmethacrylate in reactor in batches.
3. preparation method according to claim 1, is characterized in that, described mineral powder comprises more than one in calcium carbonate, polynite, talcum powder or titanium dioxide.
4. preparation method according to claim 1, is characterized in that, cooling is to be reduced to 0～10 ℃ described in step 5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210240782.7A CN102775713B (en) | 2012-07-12 | 2012-07-12 | Preparation method of plastic die material for ceramic forming |
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| CN201210240782.7A CN102775713B (en) | 2012-07-12 | 2012-07-12 | Preparation method of plastic die material for ceramic forming |
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| CN102775713A CN102775713A (en) | 2012-11-14 |
| CN102775713B true CN102775713B (en) | 2014-04-02 |
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| CN104194236A (en) * | 2014-08-28 | 2014-12-10 | 云南云天化股份有限公司 | Acrylate-ceramic composite material and preparation method thereof, and base plate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3763056A (en) * | 1971-06-02 | 1973-10-02 | G Will | Porous polymeric compositions processes and products |
| US4801624A (en) * | 1983-12-14 | 1989-01-31 | Guenther Will | Molding of ceramic materials |
| EP0516224A1 (en) * | 1991-05-30 | 1992-12-02 | SACMI Cooperativa Meccanici Imola Soc. Coop. a Resp. Lim. | Porous mould materials, their production and their use for forming ceramic castings |
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2012
- 2012-07-12 CN CN201210240782.7A patent/CN102775713B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3763056A (en) * | 1971-06-02 | 1973-10-02 | G Will | Porous polymeric compositions processes and products |
| US4801624A (en) * | 1983-12-14 | 1989-01-31 | Guenther Will | Molding of ceramic materials |
| EP0516224A1 (en) * | 1991-05-30 | 1992-12-02 | SACMI Cooperativa Meccanici Imola Soc. Coop. a Resp. Lim. | Porous mould materials, their production and their use for forming ceramic castings |
Non-Patent Citations (4)
| Title |
|---|
| "陶瓷成型用不饱和树脂基模具的研究";武光 等;《山东轻工业学院学报》;20061231;第20卷(第4期);82-84 * |
| "陶瓷成形用多孔塑料模具的研究进展";田燕 等;《陶瓷》;20051231(第10期);19-22 * |
| 武光 等."陶瓷成型用不饱和树脂基模具的研究".《山东轻工业学院学报》.2006,第20卷(第4期),82-84. |
| 田燕 等."陶瓷成形用多孔塑料模具的研究进展".《陶瓷》.2005,(第10期),19-22. |
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