【発明の詳細な説明】
本発明は合成樹脂等の高粘度液体中にたとえばシリカ、
アルミナ等の鉱物質の粉体を分散混合する方法に関する
。DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to the use of silica, for example, in high viscosity liquids such as synthetic resins.
This invention relates to a method for dispersing and mixing mineral powder such as alumina.
従来にあっては高粘度液体に粉体を分散混合するには混
合槽中の高粘度液体に粉体を投入して三木のロールで混
練した後脱気して行なったり、またいわゆるホ℃ミ＋す
で分散混合波脱気させて行なっていたが、両者とも脱気
に長時聞要し生産性が悪＜、シかも三本の０−ルによる
方法では混線時０−ルに付着した液体が落下し配合組成
が久わってしまい品質のバラツキを引き起こし、またホ
℃三牛す−でｔま全体攪拌ができず均一な分散混合を行
なうには長時聞を必要とするという問題があった。Conventionally, to disperse and mix powder into a high viscosity liquid, the powder was added to the high viscosity liquid in a mixing tank, kneaded with a Miki roll, and then degassed. + Dispersion mixed wave degassing was already used, but both methods required long degassing and were poor in productivity.The method using three wires would cause the wires to adhere to the wires during crosstalk. The problem is that the liquid falls and the composition changes for a long time, causing variations in quality.Also, it is not possible to stir the entire product at once, so it takes a long time to achieve uniform dispersion and mixing. there were.
未発ＩＪ１はこのような事情に鑑みてなされたもので、
粉体および晶粘度液体金子熱し、高粘度液体中に粉体を
投入して低速および高速で撹拌すること傾より、高粘度
液体中に粉体を均一に分散混合でき、しかも混合物の脱
気も迅速に行なうことができる高粘度液体への粉体の分
散混合方法全提供することを目的とする。The unreleased IJ1 was made in view of these circumstances,
Powder and crystal viscosity liquid Kaneko By heating the powder and adding it to the high viscosity liquid and stirring at low and high speeds, the powder can be uniformly dispersed and mixed in the high viscosity liquid, and the mixture can also be degassed. The object of the present invention is to provide a complete method for dispersing and mixing powder into a high viscosity liquid that can be carried out quickly.
すなわち本発明の高粘度液体への粉体の分散混合方法は
、粉体および高粘度液体を予熱した後、１Ｖｆ３粘度液
体に粉体を投入して低連撹拌で全体攪拌を行ない、高速
Ｉｌｔ拌で粉体を分散させると共に減圧上脱気すること
を特徴とする。未発１９１にあっては粉体は・シリカ、
アルミナ等の鉱物質で１〜１０μ程度の粒径を有するも
のであり、この粉体を６０〜１００℃で予熱する。なお
粉体を予熱する前にたとえばジセケッ１−旬づレンター
で減圧乾燥し、含水率を０．１〜０．０１重量％の範囲
で一定にしておくのが予熱効果を、−６めるためにも奸
才しい。高粘度液体とは合成樹脂等の液状物で、あり、
粘度は５，０００〜１００．０００ｃＰのものを採用す
ることができ、この高粘度液体を５０〜８０°Ｃで予熱
する１、この後必要に応じて−７００〜−７５０πｔｎ
Ｈ２で減圧脱気する。この尚粘度液体は混合槽内で予熱
し、脱気すれはよい。高粘度液体の予熱を完了した後粉
体を投入し、低速、すなわら３０〜１１００ｒＰで全体
を攪拌し、高速、すなわち３０〜３６００ｒｐｍで粉体
を分散させて高粘度液体の表面から粉体が消失するまで
約１５〜３０分間攪拌し、混合物を得る。なお、この場
合全体攪拌すると同時に高速攪拌を行なってもよい。こ
のようにして得た混合物全低速および筒速で〜攪拌して
粉体を分散させながら約１゜０〜１．５時間減圧下で脱
気を行なう。すなわち粉体粒子が凝集した状態で、いわ
ゆる「ぬれ」が起った状況下より減圧下分散を行ないな
がら脱気するのである。これは粉体粒子の表面に気泡が
合成樹脂等で旧人されると除去に時間全一ルするからで
ある。つ甘り粉体の分散全完了した後に減圧して脱気す
ることｔ」効率が悲いからである。−凹は本発明の方法
を実施するための混合（）“ツの一例を示しており、混
合槽本体ｔ１＋には先端にディスバー、ターヒシ翼等の
ｌＩ−＋Ｊ速撹拌川用（２）を先端に数句けた高速撹拌
棒（３）と、先端にイカリエ（す、アンカー型等の全体
攪拌用Ｒ（４）を数句けた低速を戊打棒（５）を回転自
在に数句けている。高３１ＩＮ拌川穆（２）は混合槽本
体（１）内の中位に位置させ、低速の全体（醪拌用諷（
４）に［混合槽本体＋１］内の下位に位１１゛）“させ
ている。混合槽本体［＋）の外周に１７Ｌ断熱杓ｔ６］
＠：被１″ｆ目〜でおり、槽蓋（７）の上に高速および
低速＃′？Ｉ：拌欅ｆ３） ＋５） ｆｆｉ回転させる
ための℃−タｔ８＋ ＋９＋および混合（Ｙ１本体（１
）内をＪ′４−窄にするための真孕ポンプ（Ｉｌｌを配
置１′１“している。（＋１）。That is, the method of dispersing and mixing powder into a high viscosity liquid according to the present invention involves preheating the powder and high viscosity liquid, then adding the powder to the 1Vf3 viscosity liquid, stirring the entire body with low continuous stirring, and then performing high-speed Ilt stirring. It is characterized by dispersing the powder and degassing it under reduced pressure. For unreleased 191, the powder is silica,
It is a mineral material such as alumina and has a particle size of about 1 to 10 microns, and this powder is preheated at 60 to 100°C. In addition, before preheating the powder, dry it under reduced pressure using a Jiseket 1-Junzu rental machine to keep the moisture content constant in the range of 0.1 to 0.01% by weight in order to reduce the preheating effect by -6. It's also very clever. High viscosity liquids are liquid materials such as synthetic resins,
A viscosity of 5,000 to 100.000 cP can be used, and this high viscosity liquid is preheated at 50 to 80°C1, and then heated to -700 to -750πtn as necessary.
Degas under reduced pressure with H2. This viscous liquid can be preheated in a mixing tank and easily degassed. After completing the preheating of the high viscosity liquid, the powder is added and the whole is stirred at a low speed, that is, 30 to 1100 rP, and the powder is dispersed at a high speed, that is, 30 to 3600 rpm, so that the powder is removed from the surface of the high viscosity liquid. Stir for about 15-30 minutes until disappear to obtain a mixture. In this case, high-speed stirring may be performed at the same time as the whole stirring. The mixture thus obtained was stirred at low speed and barrel speed to disperse the powder, and degassed under reduced pressure for about 1.0 to 1.5 hours. In other words, the powder particles are degassed while being dispersed under reduced pressure under conditions where so-called "wetting" has occurred in the aggregated state. This is because if air bubbles are formed on the surface of powder particles by synthetic resin or the like, it takes a long time to remove them. This is because it is inefficient to depressurize and degas after the solid powder has been completely dispersed. - The concave part shows an example of mixing (2) for carrying out the method of the present invention, and the mixing tank main body t1+ is equipped with a disburr, a tarshi blade, etc. (2) for I-+J speed stirring river at the tip. There is a high-speed stirring rod (3) with several holes in the middle, and a rotatable low-speed stirring rod (5) with several anchor-type R (4) at the tip for stirring the whole body. The high 31IN mixing tank (2) is located in the middle of the mixing tank main body (1), and the whole body at a low speed (for mixing)
4) is placed 11゛)" in the lower part of the [mixing tank body +1]. A 17L insulation scoop t6 is placed around the outer periphery of the mixing tank body [+].
＠：1″f～, high speed and low speed #′?I: stirring keyaki f3) +5) ffi rotating ℃-tat8+ +9+ and mixing (Y1 main body (1
) A true pump (Ill is arranged 1'1" to make the inside J'4- narrowed. (+1).
（１２）は減速機である。木発り１の方１尺を実施でき
る他の装置αとしては「アジホを三クリ−」（商品名、
特殊機化工業（株）製）を挙げることができる。Ａ・発
り１の方法は熱硬化型またｔま光（ｌ史化！す↓散状１
１イ、子杓料用成型材料、塗料等のＦ！造にθ了適に採
用でき、得られた製品においては鉱物質の粉体粒子表面
の凹凸が高粘度液体で表面被機されることにより品質が
確保される。(12) is a speed reducer. Another device α that can perform 1 shaku from wood start 1 is ``Ajiho wo Sancree'' (product name,
(manufactured by Tokushu Kika Kogyo Co., Ltd.). A. Method 1 is thermosetting type or light (l history! ↓ Dispersed 1
1.F for molding materials for ladle materials, paints, etc. In the resulting product, the unevenness on the surface of the mineral powder particles is coated with a high viscosity liquid, thereby ensuring quality.
以上本発りＪの高粘度液体へ、の粉体の分散混合方法に
おいては低速で全体攪拌を行なわせながら高速攪拌で粉
体を分散させるので、短時間で均一な分散混合物を得る
ことができる。筐た粉体および高粘度液体を予熱してい
るので得られた混合物の脱気も迅速に行なうことができ
る。これは粉体を予熱することでぬれ性が良くなりしか
も高粘度液体を予熱することで粘度が低下するため脱気
がされやすくなるからである。すなわちＲｕｍｐ ｆの
理論式
％式％：
α：液の表面張力、ε：突隙率、δ：固定に対する液の
接触角、ψ：液充満度、ｄ：粒径）によれば温度全上昇
させることにより表面張力が低下するので凝集力が低下
し、ぬれ憔が向上するのである。しかも攪拌して粉体を
分散させながら減圧下で脱気を行なうので、脱気が容易
となる。このように木発す」の方法によれば生産性を著
しく向上させることができる。As mentioned above, in the dispersion mixing method of powder into a high viscosity liquid of this invention J, the powder is dispersed by high speed stirring while stirring the entire body at low speed, so it is possible to obtain a uniformly dispersed mixture in a short time. . Since the powder and high viscosity liquid in the casing are preheated, the resulting mixture can be quickly degassed. This is because preheating the powder improves its wettability, and preheating a high viscosity liquid lowers its viscosity, making it easier to degas. That is, according to the theoretical formula for Rump f (% formula %: α: surface tension of liquid, ε: porosity, δ: contact angle of liquid with respect to fixation, ψ: liquid filling degree, d: particle size), the total temperature is increased. This lowers the surface tension, lowers the cohesive force, and improves wetting. Moreover, since deaeration is performed under reduced pressure while stirring and dispersing the powder, deaeration becomes easy. By using this method, productivity can be significantly improved.
【図面の簡単な説明】[Brief explanation of the drawing]
図は本発明の方法を実ＩｉＥするたと′）の混合槽の一
例を示す概略断面図であり、（１）＃：ｌ混台混水槽本
体３）は高速撹拌棒、（５）は低速抗拌梓、（８） 、
＋９） ＆：ｔ Ｅ−夕、＋１０１は真窄ホンプであ
る。The figure is a schematic sectional view showing an example of a mixing tank when the method of the present invention is put into practice. Azusa, (8),
+9) &:t E-Yu, +101 is a true stenosis homp.