JPS6257593B2 - - Google Patents
Info
- Publication number
- JPS6257593B2 JPS6257593B2 JP53124850A JP12485078A JPS6257593B2 JP S6257593 B2 JPS6257593 B2 JP S6257593B2 JP 53124850 A JP53124850 A JP 53124850A JP 12485078 A JP12485078 A JP 12485078A JP S6257593 B2 JPS6257593 B2 JP S6257593B2
- Authority
- JP
- Japan
- Prior art keywords
- molding material
- weight
- stearic acid
- fired ceramic
- metal salt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000012778 molding material Substances 0.000 claims description 38
- 235000021355 Stearic acid Nutrition 0.000 claims description 17
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 17
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 17
- 239000008117 stearic acid Substances 0.000 claims description 17
- 239000000919 ceramic Substances 0.000 claims description 11
- 150000003839 salts Chemical class 0.000 claims description 11
- 239000000839 emulsion Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims 4
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000008187 granular material Substances 0.000 description 31
- 239000000463 material Substances 0.000 description 22
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 16
- 239000006082 mold release agent Substances 0.000 description 16
- 238000000465 moulding Methods 0.000 description 16
- 239000000203 mixture Substances 0.000 description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 8
- 235000019359 magnesium stearate Nutrition 0.000 description 8
- 239000000047 product Substances 0.000 description 7
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 4
- 239000008116 calcium stearate Substances 0.000 description 4
- 235000013539 calcium stearate Nutrition 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 239000006063 cullet Substances 0.000 description 3
- KYIDJMYDIPHNJS-UHFFFAOYSA-N ethanol;octadecanoic acid Chemical compound CCO.CCCCCCCCCCCCCCCCCC(O)=O KYIDJMYDIPHNJS-UHFFFAOYSA-N 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 159000000007 calcium salts Chemical class 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
Classifications
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1018—Coating or impregnating with organic materials
- C04B20/1022—Non-macromolecular compounds
- C04B20/1025—Fats; Fatty oils; Ester type waxes; Higher fatty acids; Derivatives thereof
Description
【発明の詳細な説明】
本発明は流動性及び離型性の改善された、無機
質成形材料およびその製造法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an inorganic molding material with improved fluidity and mold releasability, and a method for producing the same.
更に詳しくは、本発明は顆粒状低温焼成セラミ
ツク材料表面上にステアリン酸またはその金属塩
の薄層を有する無機質成形材料およびその製造法
に関するものである。 More particularly, the present invention relates to an inorganic molding material having a thin layer of stearic acid or its metal salt on the surface of a granular low-temperature fired ceramic material, and a method for producing the same.
従来、粘土質系の成形材料を含め各種の無機質
成形材料は、その材料粒子の流動性ならびに成形
後の離型性につき種々の欠点を有していた。 Conventionally, various inorganic molding materials including clay-based molding materials have had various drawbacks regarding the fluidity of the material particles and the releasability after molding.
これらの各種欠点を改良する方法として、一般
的には、顆粒状成形材料を製造する前に、該材料
中に、例えばステアリン酸またはその塩類などの
離型剤を添加することが行われていた。 As a method to improve these various drawbacks, it has generally been done to add a mold release agent, such as stearic acid or its salts, to the granular molding material before producing the material. .
しかしながら、この種の従来技術では、所望の
離型効果を達成するために比較的大量の離型剤を
必要とし、その結果、各種欠点例えば、緻密性が
劣るとか（特に低温短時間焼成の場合）、離型剤
が炭素として製品内に残ることによる各種の欠点
があつた。 However, this type of prior art requires a relatively large amount of mold release agent to achieve the desired mold release effect, resulting in various drawbacks such as poor densification (particularly in the case of low-temperature, short-time firing). ), there were various drawbacks due to the release agent remaining in the product as carbon.
本発明は、これら公知技術の有する各種欠点を
解消または改善する、低温焼成セラミツク成形材
料またはその製造法に関する。 The present invention relates to a low-temperature fired ceramic molding material and a method for producing the same, which eliminates or improves various drawbacks of these known techniques.
すなわち、本発明は低温焼成セラミツク成形材
料の表面上に、ステアリン酸またはその金属塩の
薄層を形成することからなる、流動性および離型
性の改善された低温焼成セラミツク成形材料又は
その製造法に関する。 That is, the present invention provides a low-temperature-fired ceramic molding material with improved fluidity and mold releasability, which comprises forming a thin layer of stearic acid or its metal salt on the surface of the low-temperature-fired ceramic molding material, and a method for producing the same. Regarding.
以下、本発明を更に具体的に説明する。 The present invention will be explained in more detail below.
まず、本発明に於て低温焼成セラミツク（磁
器）とは、焼成温度が、約900℃以下のものをい
う。それは通常ガラス質成分（ガラスカレツト）
及びアルミナを、少なくとも含有する原料から製
造する。 First, in the present invention, low-temperature fired ceramic (porcelain) refers to one whose firing temperature is about 900°C or lower. It is usually a glassy component (glass cullet)
and alumina from raw materials containing at least.
また本発明の方法に於ては、ステアリン酸又は
その金属塩（以下必要により離型剤という）を使
用する。 Further, in the method of the present invention, stearic acid or a metal salt thereof (hereinafter referred to as a mold release agent if necessary) is used.
本発明において使用可能な離型剤としては、ス
テアリン酸およびその塩類、例えばカルシウム
塩、マグネシウム塩、アルミニウム塩、亜鉛塩な
どがあり、就中ステアリン酸およびそのマグネシ
ウムおよびカルシウム塩の使用が好ましい。 As mold release agents that can be used in the present invention, there are stearic acid and its salts, such as calcium salts, magnesium salts, aluminum salts, zinc salts, etc. Among them, stearic acid and its magnesium and calcium salts are preferably used.
なお、本発明で使用する離型剤は常温で固形
で、かつ水不溶性である。 The mold release agent used in the present invention is solid at room temperature and water-insoluble.
また、離型剤の溶剤としては、使用する成形材
料を溶解せず、かつ離型剤を溶解（または水系エ
マルシヨンを形成）し得るものであれば、使用で
きる。例えばアルコール類、エーテル類、ケトン
類、などを挙げることができる。特にメタノー
ル、エタノール、ブタノールなどのアルコール類
の使用が好ましい。 Further, as the solvent for the mold release agent, any solvent can be used as long as it does not dissolve the molding material used and can dissolve the mold release agent (or form an aqueous emulsion). Examples include alcohols, ethers, ketones, and the like. In particular, it is preferable to use alcohols such as methanol, ethanol, and butanol.
なお、本発明に於て、顆粒（又は顆粒状）とい
う用語は、公知の如く約40〜350μの大きさを有
する多孔性の集合体を意味する。 In the present invention, the term granule (or granule-like) refers to a porous aggregate having a size of about 40 to 350 μm, as is well known.
前記離型剤溶液の使用量は、顆粒状低温焼成セ
ラミツク成形材料（以下、必要により顆粒材とい
う）当り、１〜10％（重量）であり、特に２〜５
％の使用が好ましい。換言すれば、顆粒材に対し
て離型剤0.005〜0.6重量％、好ましくは0.05〜0.5
重量％となるような割合で使用する。 The amount of the release agent solution used is 1 to 10% (by weight), particularly 2 to 5%, per granular low-temperature fired ceramic molding material (hereinafter referred to as granule material if necessary).
Preference is given to using %. In other words, 0.005-0.6% by weight of mold release agent, preferably 0.05-0.5% by weight based on the granule material
Use in proportions such as weight %.
前記離型剤の使用量において、前記上限範囲を
越えて使用した場合には、成形時の成形品の保形
力がない。また逆に前記下限範囲に満たない量を
使用した場合には、成形材料の流動性が悪く、離
型性の改善もない。 If the amount of the mold release agent used exceeds the upper limit range, the molded product will not have the ability to retain its shape during molding. On the other hand, if an amount less than the lower limit is used, the fluidity of the molding material will be poor and the mold releasability will not be improved.
本発明に於て、顆粒材表面上に付着した離型剤
溶液は、使用溶剤が蒸発および／または顆粒材内
部へ一部浸透するに際し、該溶剤に溶解した離型
剤が顆粒材表面に主として析出し、離型剤の薄層
が形成される。 In the present invention, when the release agent solution adhered to the surface of the granule material, when the solvent used evaporates and/or partially penetrates into the inside of the granule material, the release agent dissolved in the solvent is mainly deposited on the surface of the granule material. A thin layer of mold release agent is formed by precipitation.
なお、離型剤溶液を顆粒材に添加する方法とし
ては、例えばスプレー等による噴霧吹付、所定濃
度の離型剤溶液にごく短時間の浸漬を行なう等の
方法が適用可能である。 As a method for adding the release agent solution to the granule material, methods such as spraying, immersion in a release agent solution of a predetermined concentration for a very short time, etc. can be applied.
本発明に於ては、前記の如く離型剤の水系エマ
ルシヨンを形成し、半乾燥状態の顆粒材表面にこ
れを適用してもよい。 In the present invention, an aqueous emulsion of the mold release agent may be formed as described above and applied to the surface of the semi-dry granules.
例えば、まず離型剤のエマルシヨン（離型剤含
量0.05〜0.5重量％）を作成し、これを容器（例
えばポリエチレン、ポリ塩化ビニルなどの合成樹
脂製のもの）内壁に薄く塗布し、これに顆粒状成
形材料を装入し、急速に撹拌することにより該顆
粒材表面に離型剤薄層の形成を短時間に行うこと
ができる。 For example, first create a release agent emulsion (release agent content: 0.05 to 0.5% by weight), apply this thinly to the inner wall of a container (for example, one made of synthetic resin such as polyethylene or polyvinyl chloride), and then granulate it. By charging the molding material and stirring rapidly, a thin layer of mold release agent can be formed on the surface of the granule material in a short time.
エマルシヨンの作成用媒質としては、水の使用
が好ましく、該水に表面活性剤を加え使用する。 Water is preferably used as the medium for preparing the emulsion, and a surfactant is added to the water.
エマルシヨンの使用量は、顆粒状成形材料に対
して前記エマルシヨン0.1〜５重量％である。ま
た好ましくは0.2〜25重量％である。 The amount of emulsion used is 0.1 to 5% by weight based on the granular molding material. Moreover, it is preferably 0.2 to 25% by weight.
本発明の方法に従えば、公知の各種方法に比べ
極めて少量の離型剤を使用することにより、著し
い離型効果を達成することができ、更に顆粒材自
体の流動性も高めることが可能となる。 According to the method of the present invention, a remarkable mold release effect can be achieved by using an extremely small amount of mold release agent compared to various known methods, and it is also possible to improve the fluidity of the granule material itself. Become.
本発明に於ては、前記の如く離型剤の使用量が
極めて少くてすむところから、最終製品中に不要
な物質（炭素など）の含有量の少い、緻密なもの
が得られるという特長を有する。このことは本発
明の対象物、特に低温条件下で短時間焼成する成
形材料（磁器）においてとりわけ有利なことであ
る。更に経済的でもある。 The present invention has the advantage that, as mentioned above, the amount of mold release agent used is extremely small, resulting in a dense final product with a low content of unnecessary substances (such as carbon). has. This is particularly advantageous for objects of the invention, especially molding materials (porcelain) which are fired for a short time under low temperature conditions. It is also more economical.
また、水不溶性の離型剤を使用しているので、
吸湿性がなく、そのため貯蔵安定性にも優れてい
る。 In addition, since we use a water-insoluble mold release agent,
It has no hygroscopicity and therefore has excellent storage stability.
以下、実施例により、本発明を更に詳しく説明
する。 Hereinafter, the present invention will be explained in more detail with reference to Examples.
実施例 １
第１リン酸アルミニウム20重量部、アルミナ
（Al2O3）100重量部およびケイ砂20重量部を混合
し、ボールミルにより粒径100μ以下に粉砕し
た。この混合物に水10重量部を添加し十分に混合
し、これから常法に従つて150〜300μの大きさの
顆粒状成形材料を形成した。この顆粒材に４％ス
テアリン酸エタノール溶液を顆粒材に対してステ
アリン酸0.1重量％（顆粒材100ｇに対し４％ステ
アリン酸エタノール溶液2.5ｇに相当）となる量
で添加し、撹拌混合し、約３時間放置して風乾
し、該顆粒表面上にステアリン酸の薄層を形成し
た。Example 1 20 parts by weight of primary aluminum phosphate, 100 parts by weight of alumina (Al 2 O 3 ) and 20 parts by weight of silica sand were mixed and ground to a particle size of 100 μm or less using a ball mill. To this mixture, 10 parts by weight of water was added and thoroughly mixed, from which a granular molding material having a size of 150 to 300 μm was formed according to a conventional method. A 4% stearic acid ethanol solution was added to the granules in an amount of 0.1% by weight of stearic acid based on the granules (equivalent to 2.5 g of a 4% stearic acid ethanol solution per 100 g of the granules), and the mixture was stirred and mixed. The granules were left to air dry for 3 hours to form a thin layer of stearic acid on the surface of the granules.
ここで得られた試料を用いて、連続プレス成形
機によつて円板（30φ×３mm）状成型物を形成し
た。 Using the sample obtained here, a disc-shaped molded product (30φ x 3mm) was formed using a continuous press molding machine.
本発明の方法で処理した試料は、優れた離型性
を示し、10000回の連続成型後も、金型への材料
の付着は観察されなかつた。また顆粒材の流動性
もよく、満足できる結果を与えた。 The sample treated by the method of the present invention showed excellent mold releasability, and no material was observed to adhere to the mold even after 10,000 continuous moldings. Furthermore, the fluidity of the granules was good, giving satisfactory results.
一方、離型剤で処理しない成型材料では１回目
の成型で既に金型への付着がみられ、連続成型は
不可能であつた。 On the other hand, with the molding material not treated with a mold release agent, adhesion to the mold was already observed in the first molding, and continuous molding was impossible.
実施例 ２
テトラポリリン酸ナトリウム15重量部、アルミ
ナ（Al2O3）60重量部、ガラス粉末（カレツト）
40重量部および粘土20重量部を混合し、ボールミ
ルによつて粉砕した。この混合物に水10重量部を
添加し十分に撹拌し、これから約100〜180μの大
きさの顆粒状成形材料を作成した。この顆粒材に
４％ステアリン酸エタノール溶液を、顆粒材100
ｇ当り7.5ｇ（顆粒材に対してステアリン酸0.3重
量％）となる量で添加して撹拌混合した後、風乾
して該顆粒材表面上にステアリン酸の薄層を形成
した。Example 2 15 parts by weight of sodium tetrapolyphosphate, 60 parts by weight of alumina (Al 2 O 3 ), glass powder (cullet)
40 parts by weight and 20 parts by weight of clay were mixed and ground using a ball mill. 10 parts by weight of water was added to this mixture and thoroughly stirred, from which a granular molding material having a size of approximately 100 to 180 μm was prepared. Add 4% stearic acid ethanol solution to this granule material and add 100% of the granule material.
The mixture was added in an amount of 7.5 g/g (0.3% by weight of stearic acid based on the granules), stirred and mixed, and then air-dried to form a thin layer of stearic acid on the surface of the granules.
ここで得られた試料を用いて、連続プレス成形
機によつて円板（30φ×３mm）状成形物を形成し
た。 Using the sample obtained here, a disc-shaped molded product (30φ x 3mm) was formed using a continuous press molding machine.
本発明の方法に従つてステアリン酸処理した顆
粒材は優れた離型性を示し、10000回の連続成形
後も金型への付着は見られなかつた。更に流動性
においても満足できる結果を与えた。 The granules treated with stearic acid according to the method of the present invention exhibited excellent mold releasability, and no adhesion to the mold was observed even after 10,000 continuous moldings. Furthermore, satisfactory results were obtained in terms of fluidity.
実施例 ３
第１リン酸アルミニウム20重量部、アルミナ
100重量部、およびケイ砂20重量部を一緒にボー
ルミルによつて粉砕混合した。この配合物から以
下の三種の約125〜250μの大きさの顆粒状成形材
料を作成した。Example 3 20 parts by weight of primary aluminum phosphate, alumina
100 parts by weight and 20 parts by weight of silica sand were ground and mixed together in a ball mill. The following three types of granular molding materials having a size of about 125 to 250 microns were prepared from this blend.
(A) 上記配合物に10重量部の水を添加して撹拌混
合し、これから顆粒状成形材料を作成した。次
いでステアリン酸マグネシウムのエマルシヨン
（ステアリン酸マグネシウム分５重量％）を作
成し、これをポリエチレン容器内面に、顆粒状
成形材料に対してステアリン酸マグネシウム分
0.1重量％となるように前記エマルシヨンを塗
布し、半乾燥状態の前記顆粒材を投入し急速に
撹拌して、該顆粒材表面上にステアリン酸マグ
ネシウムの薄層を形成した。(A) 10 parts by weight of water was added to the above mixture and mixed with stirring, and a granular molding material was prepared from the mixture. Next, an emulsion of magnesium stearate (magnesium stearate content: 5% by weight) was created, and this was placed on the inner surface of a polyethylene container, and the magnesium stearate content was added to the granular molding material.
The emulsion was applied to a concentration of 0.1% by weight, and the semi-dry granules were added and rapidly stirred to form a thin layer of magnesium stearate on the surface of the granules.
(B) 対照：前記(A)においてステアリン酸マグネ
シウム処理しない顆粒状成形材料を作成した。(B) Control: A granular molding material that was not treated with magnesium stearate in (A) above was prepared.
(C) 対照：前記配合物にステアリン酸マグネシ
ウム エマルシヨン（ステアリン酸マグネシウ
ム分５重量％）をステアリン酸マグネシウムの
量が１重量％となるように大量に添加し、更に
10重量部の水を加えて撹拌混合し、これから顆
粒状成形材料を作成した。(C) Control: A large amount of magnesium stearate emulsion (magnesium stearate content: 5% by weight) was added to the above formulation so that the amount of magnesium stearate was 1% by weight, and
10 parts by weight of water was added and mixed by stirring, and a granular molding material was prepared from the mixture.
上記３種の顆粒状成形材料を用いて、実施例
１、２と同様の成形物を連続プレス成形機で形成
することを試みた。 Using the above three types of granular molding materials, an attempt was made to form molded products similar to those in Examples 1 and 2 using a continuous press molding machine.
この結果は以下の通りであつた。 The results were as follows.
本発明にあたる(A)の試料は、優れた離型性を示
した。すなわち、10000回の連続成形後も金型へ
の付着は、みられなかつた。更に材料ホツパー内
で良好な流動性を示した。 Sample (A) according to the present invention exhibited excellent mold release properties. That is, no adhesion to the mold was observed even after continuous molding 10,000 times. Furthermore, it exhibited good fluidity within the material hopper.
他方、(B)の試料を用いた場合、１回の成形です
でに金型への付着がみられ、連続成形は不可能で
あつた。更に、材料ホツパー内での流動性が悪
く、金型への材料が充分に出来なかつた。 On the other hand, when sample (B) was used, adhesion to the mold was already observed after one molding, and continuous molding was impossible. Furthermore, the fluidity within the material hopper was poor, and the material could not be sufficiently poured into the mold.
更に、(C)の試料を用いた場合においては、離型
性において若干の改良がみられた。即ち、10回程
度の連続成形が可能となつた。しかしながら、そ
の後、金型表面に曇りが生じ、20回目には成形材
料が金型から離れなかつた。 Furthermore, when sample (C) was used, a slight improvement in mold releasability was observed. In other words, it became possible to perform continuous molding about 10 times. However, after that, the mold surface became cloudy, and the molding material did not separate from the mold after the 20th test.
実施例 ４
テトラポリリン酸ナトリウム15重量部、アルミ
ナ60重量部、ガラス粉末（カレツト）40重量部、
および粘土20重量部を一緒にボールミルにて混合
粉砕した。この混合物に10重量部の水を添加して
撹拌混合し、これから約70〜210μの大きさの顆
粒状成形材料を作成した。ステアリン酸カルシウ
ムのエマルシヨン（ステアリン酸カルシウム分５
重量％）をポリエチレン容器内壁に、顆粒材に対
してステアリン酸カルシウム分が0.2重量％とな
るような量を塗布し、これに半乾燥状態の顆粒材
を投入し十分に撹拌した後、風乾して顆粒材表面
上にステアリン酸カルシウムの薄層を形成した。Example 4 15 parts by weight of sodium tetrapolyphosphate, 60 parts by weight of alumina, 40 parts by weight of glass powder (cullet),
and 20 parts by weight of clay were mixed and ground together in a ball mill. To this mixture, 10 parts by weight of water was added and mixed by stirring, and a granular molding material having a size of approximately 70 to 210 μm was prepared from the mixture. Calcium stearate emulsion (calcium stearate: 5
% by weight) was applied to the inner wall of a polyethylene container in an amount such that the calcium stearate content was 0.2% by weight relative to the granule material, and the semi-dry granule material was added to this, thoroughly stirred, and then air-dried. A thin layer of calcium stearate was formed on the surface of the granulate.
得られた顆粒材を用いて前記実施例と同様にし
て円板状成型物を得た。 Using the obtained granules, a disc-shaped molded product was obtained in the same manner as in the above example.
前記実施例の顆粒材と同様の優れた性能を示し
た。 It showed the same excellent performance as the granule material of the previous example.
比較例 １
第１リン酸アルミニウム20重量部、酸化アルミ
ニウム100重量部およびケイ砂20重量部をボール
ミルにより材料粒径100μ以下に粉砕混合した。Comparative Example 1 20 parts by weight of primary aluminum phosphate, 100 parts by weight of aluminum oxide, and 20 parts by weight of silica sand were ground and mixed in a ball mill to a material particle size of 100 μm or less.
この混合物に水10重量部を添加し十分混合し、
以下のようにして顆粒状成型材料を形成した；
まずヘキサン20c.c.を45℃に加温し、ポリブテン
1.2ｇを添加し撹拌溶解した後、真空ライカン機
へ投入した。これに上記顆粒状成型材料を加えて
混合し350mmHgで溶媒のヘキサン分を0.1w％以下
に脱気した。 Add 10 parts by weight of water to this mixture and mix thoroughly.
A granular molding material was formed as follows: First, 20 c.c. of hexane was heated to 45°C, and polybutene was heated to 45°C.
After adding 1.2 g and stirring to dissolve, the mixture was charged into a vacuum Lycan machine. The above granular molding material was added to this, mixed, and degassed at 350 mmHg to reduce the hexane content of the solvent to 0.1 w% or less.
ここで、得られた試料を用いて、連続プレス成
形機によつて円板（30φ×３mm）状成型物を作成
した。その際、顆粒材の流動性が悪く、金型内材
料を自動供給する容器（ホツパー）内で顆粒材同
志およびホツパー内の壁面等に付着し、金型内へ
の均一充填ができなかつた。 Here, using the obtained sample, a disc-shaped molded product (30φ x 3mm) was created using a continuous press molding machine. At that time, the fluidity of the granules was poor, and the granules adhered to each other and to the walls of the hopper in the container (hopper) that automatically supplies the material into the mold, making it impossible to fill the mold uniformly.
そのために、ホツパーによる自動供給を停止
し、サジにより金型内へ材料を投入し成型を行つ
た。 For this purpose, the automatic supply by the hopper was stopped, and the material was fed into the mold using a spigot to perform molding.
しかし金型上下面の付着があり、離型性が悪く
連続成形ができなかつた。 However, there was adhesion on the upper and lower surfaces of the mold, and the mold release properties were poor, making continuous molding impossible.
Claims (1)
セラミツク成形材料の表面上に、ステアリン酸又
はその金属塩の薄層を有する、流動性及び離型性
の改善された低温焼成セラミツク成形材料。 ２ 顆粒状の低温焼成セラミツク成形材料の表面
上にステアリン酸又はその金属塩の0.5〜６重量
％濃度の有機溶液を、該成形材料に対し１〜10％
の割合で短時間に付与し、ついで該有機溶液を蒸
散するかあるいは蒸散と一部の浸透により、該ス
テアリン酸又はその金属塩の薄層を該成形材料の
表面上に形成することを特徴とする、流動性およ
び離型性の改善された低温焼成セラミツク成形材
料の製造法。 ３ 顆粒状の低温焼成セラミツク成形材料の表面
上にステアリン酸又はその金属塩の0.05〜0.5重
量％濃度の水系エマルシヨンを、該成形材料に対
し0.1〜５重量％の割合で短時間に付与し、つい
で水を蒸散するかあるいは蒸散と一部の浸透によ
り、該ステアリン酸又はその金属塩の薄層を該成
形材料の表面上に形成することを特徴とする、流
動性および離型性の改善された低温焼成セラミツ
ク成形材料の製造法。[Claims] 1. A thin layer of stearic acid or its metal salt on the surface of a granular low-temperature fired ceramic molding material in a proportion of 0.005 to 0.6% by weight, which has improved fluidity and mold release properties. Low-temperature fired ceramic molding material. 2. An organic solution of stearic acid or its metal salt with a concentration of 0.5 to 6% by weight is applied to the surface of a granular low-temperature fired ceramic molding material at a concentration of 1 to 10% of the molding material.
of the stearic acid or its metal salt over a short period of time, and then evaporating the organic solution or evaporating and partially penetrating it to form a thin layer of the stearic acid or its metal salt on the surface of the molding material. A method for producing a low-temperature fired ceramic molding material with improved fluidity and mold releasability. 3. Applying an aqueous emulsion of stearic acid or its metal salt at a concentration of 0.05 to 0.5% by weight to the surface of a granular low-temperature fired ceramic molding material in a short period of time at a rate of 0.1 to 5% by weight relative to the molding material, Then, a thin layer of the stearic acid or its metal salt is formed on the surface of the molding material by evaporating water or by evaporating water and partially permeating the molding material. A method for producing low-temperature fired ceramic molding materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12485078A JPS5551757A (en) | 1978-10-11 | 1978-10-11 | Inorganic molding material with improved fluidness and molddrelease |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12485078A JPS5551757A (en) | 1978-10-11 | 1978-10-11 | Inorganic molding material with improved fluidness and molddrelease |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5551757A JPS5551757A (en) | 1980-04-15 |
| JPS6257593B2 true JPS6257593B2 (en) | 1987-12-01 |
Family
ID=14895631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12485078A Granted JPS5551757A (en) | 1978-10-11 | 1978-10-11 | Inorganic molding material with improved fluidness and molddrelease |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5551757A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS566669A (en) * | 1980-04-21 | 1981-01-23 | Oki Electric Ind Co Ltd | Voltage converting circuit by semiconductor integrated circuit |
| JPS566670A (en) * | 1980-04-21 | 1981-01-23 | Oki Electric Ind Co Ltd | Voltage converting method |
-
1978
- 1978-10-11 JP JP12485078A patent/JPS5551757A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5551757A (en) | 1980-04-15 |
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