JP2002047040A - Method of producing w/o emulsion containing cement - Google Patents
Method of producing w/o emulsion containing cementInfo
- Publication number
- JP2002047040A JP2002047040A JP2000233365A JP2000233365A JP2002047040A JP 2002047040 A JP2002047040 A JP 2002047040A JP 2000233365 A JP2000233365 A JP 2000233365A JP 2000233365 A JP2000233365 A JP 2000233365A JP 2002047040 A JP2002047040 A JP 2002047040A
- Authority
- JP
- Japan
- Prior art keywords
- emulsion
- cement
- water
- oily substance
- emulsion composition
- 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.)
- Pending
Links
- 239000004568 cement Substances 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title abstract description 22
- 239000007762 w/o emulsion Substances 0.000 title 1
- 239000000839 emulsion Substances 0.000 claims abstract description 83
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000000203 mixture Substances 0.000 claims abstract description 35
- 238000004898 kneading Methods 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims description 38
- 238000004519 manufacturing process Methods 0.000 claims description 21
- 239000003995 emulsifying agent Substances 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 239000012783 reinforcing fiber Substances 0.000 claims description 8
- 239000002736 nonionic surfactant Substances 0.000 claims description 4
- 238000000465 moulding Methods 0.000 abstract description 5
- 239000012778 molding material Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract 1
- 238000003756 stirring Methods 0.000 description 10
- 239000002994 raw material Substances 0.000 description 8
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 5
- 239000000178 monomer Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 5
- 229920002554 vinyl polymer Polymers 0.000 description 5
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 239000003505 polymerization initiator Substances 0.000 description 4
- 230000009974 thixotropic effect Effects 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- OKKRPWIIYQTPQF-UHFFFAOYSA-N Trimethylolpropane trimethacrylate Chemical compound CC(=C)C(=O)OCC(CC)(COC(=O)C(C)=C)COC(=O)C(C)=C OKKRPWIIYQTPQF-UHFFFAOYSA-N 0.000 description 3
- ZORQXIQZAOLNGE-UHFFFAOYSA-N 1,1-difluorocyclohexane Chemical compound FC1(F)CCCCC1 ZORQXIQZAOLNGE-UHFFFAOYSA-N 0.000 description 2
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000001593 sorbitan monooleate Substances 0.000 description 2
- 235000011069 sorbitan monooleate Nutrition 0.000 description 2
- 229940035049 sorbitan monooleate Drugs 0.000 description 2
- 229920006337 unsaturated polyester resin Polymers 0.000 description 2
- QEQBMZQFDDDTPN-UHFFFAOYSA-N (2-methylpropan-2-yl)oxy benzenecarboperoxoate Chemical compound CC(C)(C)OOOC(=O)C1=CC=CC=C1 QEQBMZQFDDDTPN-UHFFFAOYSA-N 0.000 description 1
- JNYAEWCLZODPBN-JGWLITMVSA-N (2r,3r,4s)-2-[(1r)-1,2-dihydroxyethyl]oxolane-3,4-diol Chemical compound OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O JNYAEWCLZODPBN-JGWLITMVSA-N 0.000 description 1
- PHDVPEOLXYBNJY-KTKRTIGZSA-N 2-(2-hydroxyethoxy)ethyl (z)-octadec-9-enoate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCCOCCO PHDVPEOLXYBNJY-KTKRTIGZSA-N 0.000 description 1
- PWVUXRBUUYZMKM-UHFFFAOYSA-N 2-(2-hydroxyethoxy)ethyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCCOCCO PWVUXRBUUYZMKM-UHFFFAOYSA-N 0.000 description 1
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- HVUMOYIDDBPOLL-XWVZOOPGSA-N Sorbitan monostearate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O HVUMOYIDDBPOLL-XWVZOOPGSA-N 0.000 description 1
- 229920002978 Vinylon Polymers 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 239000011400 blast furnace cement Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- YQEMORVAKMFKLG-UHFFFAOYSA-N glycerine monostearate Natural products CCCCCCCCCCCCCCCCCC(=O)OC(CO)CO YQEMORVAKMFKLG-UHFFFAOYSA-N 0.000 description 1
- SVUQHVRAGMNPLW-UHFFFAOYSA-N glycerol monostearate Natural products CCCCCCCCCCCCCCCCC(=O)OCC(O)CO SVUQHVRAGMNPLW-UHFFFAOYSA-N 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000007764 o/w emulsion Substances 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910021487 silica fume Inorganic materials 0.000 description 1
- 239000001587 sorbitan monostearate Substances 0.000 description 1
- 235000011076 sorbitan monostearate Nutrition 0.000 description 1
- 229940035048 sorbitan monostearate Drugs 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、セメント系成形品
の成形材料として好適な、水、セメント及び油性物質か
らなるセメント含有Ｗ／Ｏエマルジョン組成物を安定し
た品質で、効率よく連続的に製造する方法に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cement-containing W / O emulsion composition comprising water, cement and an oily substance, which is suitable as a molding material for a cement-based molded product, and which is efficiently and continuously produced with a stable quality. How to do it.
【０００２】[0002]
【従来の技術】従来、セメント系成形品を製造する有効
な方法として、セメント、水、及び油性物質からなるセ
メント含有Ｗ／Ｏエマルジョン組成物を利用する方法が
提案されている。このセメント含有Ｗ／Ｏエマルジョン
組成物は、成形時の保形性、成形性に優れており、ま
た、水／セメント比を変化させることにより得られるセ
メント系成形品の比重を自由にコントロールできるとい
う特徴を有している。更に、得られたセメント系成形品
は、微細でかつ均一な発泡構造を有しているため表面平
滑性、鋸引き性や釘打ち性等の加工性、或いはネジ保持
力等に優れた性質を有していることが知られている（特
公平１−３０７７８号公報等参照）。2. Description of the Related Art Hitherto, as an effective method for producing a cement-based molded article, a method utilizing a cement-containing W / O emulsion composition comprising cement, water and an oily substance has been proposed. This cement-containing W / O emulsion composition is excellent in shape retention and moldability at the time of molding, and can freely control the specific gravity of a cement-based molded product obtained by changing the water / cement ratio. Has features. Furthermore, since the obtained cement-based molded product has a fine and uniform foamed structure, it has excellent properties such as surface smoothness, workability such as sawing and nailing, and screw holding power. Is known (see Japanese Patent Publication No. 1-30778).
【０００３】このようなセメント含有Ｗ／Ｏエマルジョ
ン組成物を連続的に形成する方法としては、（１）まず
水と油性物質とからなるＷ／Ｏエマルジョンを調製し、
次いでセメントを配合する方法や、（２）セメント、水
及び油性物質を同時に配合してＷ／Ｏエマルジョンを調
製する方法等が提案されている（特開平９−２５５４５
０号公報等）。これらの方法は、いずれもセメント含有
Ｗ／Ｏエマルジョン組成物を連続的に形成させる上で有
効な方法ではあるが、例えば、（１）の方法を採用した
場合、水と油性物質とからなるＷ／Ｏエマルジョンが、
比較的高粘度でチクソトロピー性を有しているため、配
管内の中心付近と管壁付近とに粘度差を生じたり、配管
の屈曲部位に滞留するという問題や、該Ｗ／Ｏエマルジ
ョンと、粒子間隙や空隙に多量の空気を含んでいるセメ
ントとのなじみが悪く、時間当たりのセメント含有Ｗ／
Ｏエマルジョン組成物の生産量を増やすために、水と油
性物質とからなるＷ／Ｏエマルジョンと、セメントの供
給量を増やすと、時間当たりの供給体積が増えて連続混
錬装置の入り口付近において滞留して詰まりを生じ、そ
れが原因で配合比がばらつくという問題があった。As a method for continuously forming such a cement-containing W / O emulsion composition, (1) First, a W / O emulsion composed of water and an oily substance is prepared,
Then, a method of blending cement, and (2) a method of simultaneously blending cement, water and an oily substance to prepare a W / O emulsion have been proposed (Japanese Patent Application Laid-Open No. 9-25545).
No. 0). Any of these methods is an effective method for continuously forming a cement-containing W / O emulsion composition. For example, when the method (1) is adopted, the W / O emulsion composed of water and an oily substance is used. / O emulsion,
Since it has a relatively high viscosity and has thixotropic properties, there is a problem that a difference in viscosity occurs between the vicinity of the center of the pipe and the vicinity of the pipe wall, or the stagnation occurs at a bent portion of the pipe. Poor compatibility with cement containing a large amount of air in gaps and voids, and cement-containing W /
When the supply amount of the W / O emulsion composed of water and an oily substance and the cement is increased in order to increase the production amount of the O emulsion composition, the supply volume per hour increases, and the stagnant liquid stays near the entrance of the continuous kneading apparatus. Clogging, which causes a problem that the mixing ratio varies.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、セメント成
形品の成形用材料として好適なセメント含有Ｗ／Ｏエマ
ルジョン組成物を工業的に安定した品質で、しかも高い
生産性で、連続的に製造する方法を提供することを目的
とする。DISCLOSURE OF THE INVENTION The present invention is to continuously produce a cement-containing W / O emulsion composition suitable as a molding material for a cement molded product with industrially stable quality and high productivity. The purpose is to provide a way to:
【０００５】[0005]
【課題を解決するための手段】本発明者等は鋭意検討を
重ねた結果、水と油性物質とから形成されるＯ／Ｗエマ
ルジョンとセメント及びその他の原材料とを混練した場
合に、驚くべきことに当該Ｏ／ＷエマルジョンがＷ／Ｏ
エマルジョンに転化してセメント含有Ｗ／Ｏエマルジョ
ン組成物を形成しうることを見いだし、しかもＯ／Ｗエ
マルジョンは、同組成のＷ／Ｏエマルジョンに比べてセ
メントとの親和性に優れているとともに、粘度が低く流
動性に優れているので上記問題を解決できることを見い
だし本発明に到達した。As a result of intensive studies, the present inventors have found that, when an O / W emulsion formed from water and an oily substance is kneaded with cement and other raw materials, it is surprising. The O / W emulsion is W / O
It has been found that a W / O emulsion composition can be converted into an emulsion to form a cement-containing W / O emulsion composition, and that the O / W emulsion has a higher affinity for cement and a higher viscosity than a W / O emulsion of the same composition. And excellent fluidity, so that the above problem can be solved.
【０００６】すなわち、本発明は （１）水（Ａ）及び油性物質（Ｃ）から形成されるＯ／
Ｗエマルジョン（Ｉ）と、セメント（Ｂ）を連続混練装
置に供給して混練することを特徴とする成形品成形用の
セメント含有Ｗ／Ｏエマルジョン組成物（ＩＩ）の製造
方法。 （２）Ｏ／Ｗエマルジョン（Ｉ）が、水（Ａ）と油性物
質（Ｃ）を乳化剤（Ｅ）の存在下で混合することにより
形成されたものであることを特徴とする（１）記載のセ
メント含有Ｗ／Ｏエマルジョン組成物（ＩＩ）の製造方
法。 （３）乳化剤（Ｅ）が、ＨＬＢ価が３〜９の非イオン性
界面活性剤であることを特徴とする（２）記載のセメン
ト含有Ｗ／Ｏエマルジョン組成物（ＩＩ）の製造方法。 （４）セメント含有Ｗ／Ｏエマルジョン組成物（ＩＩ）
が、更に補強繊維（Ｄ）を含有していることを特徴とす
る（１）乃至（３）のいずれかに記載のセメント含有Ｗ
／Ｏエマルジョン組成物（ＩＩ）の製造方法をその要旨
とするものである。That is, the present invention relates to (1) O / O formed from water (A) and oily substance (C).
A method for producing a cement-containing W / O emulsion composition (II) for molding a molded article, wherein the W emulsion (I) and the cement (B) are supplied to a continuous kneading apparatus and kneaded. (2) The O / W emulsion (I) is characterized by being formed by mixing water (A) and an oily substance (C) in the presence of an emulsifier (E). Production method of the cement-containing W / O emulsion composition (II). (3) The method for producing a cement-containing W / O emulsion composition (II) according to (2), wherein the emulsifier (E) is a nonionic surfactant having an HLB value of 3 to 9. (4) Cement-containing W / O emulsion composition (II)
But further comprises a reinforcing fiber (D), the cement-containing W according to any one of (1) to (3),
The gist of the present invention is a method for producing the / O emulsion composition (II).
【０００７】[0007]
【発明の実施の形態】以下に、本発明の実施の形態を詳
細に説明する。本発明のセメント含有Ｗ／Ｏエマルジョ
ン組成物（ＩＩ）は、水（Ａ）、セメント（Ｂ）、油性
物質（Ｃ）及び必要に応じて補強繊維（Ｄ）、その他の
原材料を原材料とするものであって、油性物質（Ｃ）の
連続相の中に水（Ａ）が微小な水滴となって存在する所
謂Ｗ／Ｏエマルジョン中に、更にセメント（Ｂ）や補強
繊維（Ｄ）等が分散している状態のものである。Embodiments of the present invention will be described below in detail. The cement-containing W / O emulsion composition (II) of the present invention comprises water (A), cement (B), an oily substance (C), and, if necessary, reinforcing fibers (D), and other raw materials. The cement (B) and the reinforcing fibers (D) are further dispersed in a so-called W / O emulsion in which water (A) exists as minute water droplets in the continuous phase of the oily substance (C). It is in the state of doing.
【０００８】本発明で使用するセメント（Ｂ）として
は、ポルトランドセメント、フライアッシュセメント、
高炉セメント、アルミナセメント、ハイアルミナセメン
ト、シリカヒューム等の単独物或いはそれらの混合物が
挙げられる。The cement (B) used in the present invention includes Portland cement, fly ash cement,
A single product such as blast furnace cement, alumina cement, high alumina cement, silica fume and the like, or a mixture thereof can be used.
【０００９】また、油性物質（Ｃ）としては、水（Ａ）
とエマルジョンを形成し得るものであれば特に制限はな
いが、通常疎水性の液状物質が利用され、例えば、トル
エン、キシレン、灯油、スチレン、ジビニルベンゼン、
メチルメタクリレート、トリメチロールプロパントリメ
タクリレート、不飽和ポリエステル樹脂等が挙げられ
る。特に、油性物質（Ｃ）として、スチレン、ジビニル
ベンゼン、メチルメタクリレート、トリメチロールプロ
パントリメタクリレート、不飽和ポリエステル樹脂等の
重合性二重結合を有するものを使用すれば、セメント
（Ｂ）の水和反応と重合性二重結合を有する油性物質
（Ｃ）の重合反応が同時に起こり、ポリマーがマトリッ
クスを形成して、優れた物理的、機械的性質を有するセ
メント成形品が得られるので望ましい。なお、重合性二
重結合を有する油性物質（Ｃ）を使用する場合には、油
性物質（Ｃ）の重合を促進するために、有機過酸化物や
過硫酸塩等の重合開始剤を併用することが望ましい。As the oily substance (C), water (A)
There is no particular limitation as long as it can form an emulsion, but usually a hydrophobic liquid substance is used, for example, toluene, xylene, kerosene, styrene, divinylbenzene,
Examples include methyl methacrylate, trimethylolpropane trimethacrylate, and unsaturated polyester resins. In particular, when a substance having a polymerizable double bond such as styrene, divinylbenzene, methyl methacrylate, trimethylolpropane trimethacrylate, or an unsaturated polyester resin is used as the oily substance (C), the hydration reaction of the cement (B) can be achieved. And a polymerization reaction of the oily substance (C) having a polymerizable double bond and the polymer form a matrix, thereby obtaining a cement molded article having excellent physical and mechanical properties. When an oily substance (C) having a polymerizable double bond is used, a polymerization initiator such as an organic peroxide or a persulfate is used in combination to promote the polymerization of the oily substance (C). It is desirable.
【００１０】更に、Ｗ／Ｏエマルジョンの形成性を高め
たり、安定性を付与するために乳化剤（Ｅ）を使用する
ことが望ましい。乳化剤（Ｅ）としては、非イオン性界
面活性剤や各種アニオン系界面活性剤やカチオン系界面
活性剤等が挙げられるが、ソルビタンモノオレート、ソ
ルビタンセスキオレート、ソルビタンモノステアレー
ト、グリセロールモノステアレート、ジエチレングリコ
ールモノステアレート、ジグリセロールモノオレート等
のＨＬＢ価が３〜９である非イオン性界面活性剤を使用
するのが好ましい。Furthermore, it is desirable to use an emulsifier (E) in order to enhance the formability of the W / O emulsion and to impart stability. Examples of the emulsifier (E) include nonionic surfactants, various anionic surfactants, and cationic surfactants. Sorbitan monooleate, sorbitan sesquiolate, sorbitan monostearate, glycerol monostearate, It is preferable to use a nonionic surfactant having an HLB value of 3 to 9, such as diethylene glycol monostearate and diglycerol monooleate.
【００１１】更にまた、得られる成形品の機械的強度を
改善するために補強繊維（Ｄ）を使用することが好まし
い。補強繊維（Ｄ）としては、ポリプロピレン繊維、ア
クリル繊維、ビニロン繊維、アラミド繊維等の合成繊維
や、炭素繊維、ガラス繊維等が挙げられ、これらを単独
で、或いは混合して使用することができる。更に、上記
原材料に加えて砂、砂利、パーライト、シラスバルー
ン、ガラス粉、発泡ガラス粒等の骨材や、各種添加剤を
併用することも勿論可能である。Further, it is preferable to use a reinforcing fiber (D) in order to improve the mechanical strength of the obtained molded article. Examples of the reinforcing fiber (D) include synthetic fibers such as polypropylene fiber, acrylic fiber, vinylon fiber, and aramid fiber, carbon fiber, and glass fiber, and these can be used alone or in combination. Further, in addition to the above-described raw materials, aggregates such as sand, gravel, pearlite, shirasu balloon, glass powder, foamed glass particles, and various additives can be used in combination.
【００１２】次に、本発明のセメント含有Ｗ／Ｏエマル
ジョン組成物（ＩＩ）の製造方法を手順に従って説明す
る。ここで、本発明でいうＯ／Ｗエマルジョン（Ｉ）と
は、水（Ａ）の連続相の中に油性物質（Ｃ）が微小な液
滴となって存在している状態のエマルジョンを意味して
いる。まず、水（Ａ）及び油性物質（Ｃ）からなるＯ／
Ｗエマルジョン（Ｉ）を製造するのであるが、この際に
上述した乳化剤（Ｅ）の存在下で、水（Ａ）と油性物質
（Ｃ）とを混合するのが望ましく、その際、乳化剤
（Ｅ）を油性物質（Ｃ）に溶解させて使用するのが一般
的である。Next, the method for producing the cement-containing W / O emulsion composition (II) of the present invention will be described according to the procedure. Here, the O / W emulsion (I) referred to in the present invention means an emulsion in which the oily substance (C) is present as fine droplets in a continuous phase of water (A). ing. First, O / composed of water (A) and oily substance (C)
The W emulsion (I) is produced. At this time, it is desirable to mix the water (A) and the oily substance (C) in the presence of the emulsifier (E) described above. ) Is generally used by dissolving it in the oily substance (C).
【００１３】このようなＯ／Ｗエマルジョン（Ｉ）は、
例えば、（１）水（Ａ）に油性物質（Ｃ）を少しずつ添
加しながら攪拌するか、或いは（２）水（Ａ）と油性物
質（Ｃ）を同時に加えＷ／Ｏエマルジョンにならない程
度にゆるやかに攪拌する方法などがあるが、本発明にお
いてはいずれの方法を採用することも可能である。ま
た、攪拌装置としては、例えば、ディゾルバー、スクリ
ューラインミキサー、超音波ホモジナイザー、コロイド
ミル、プラネタリーミキサー、スタティックミキサー、
ナウターミキサー、リボンブレンダー、タンブルミキサ
ー、パドル式ミキサー等が挙げられる。Such an O / W emulsion (I) is
For example, (1) stirring while adding the oily substance (C) little by little to the water (A), or (2) adding the water (A) and the oily substance (C) at the same time so as not to form a W / O emulsion. Although there is a method of gentle stirring, any method can be adopted in the present invention. Further, as the stirring device, for example, a dissolver, a screw line mixer, an ultrasonic homogenizer, a colloid mill, a planetary mixer, a static mixer,
Examples include a Nauta mixer, a ribbon blender, a tumble mixer, and a paddle mixer.
【００１４】また、水（Ａ）と油性物質（Ｃ）との配合
割合は、油性物質：水＝１：１．５以上が好ましい。油
性物質：水＝１：１．５未満では、得られるＯ／Ｗエマ
ルジョン（Ｉ）の粘度や、チクソトロピー性が高くなる
ので好ましくない。このようにして得られるＯ／Ｗエマ
ルジョン（Ｉ）は、同組成のＷ／Ｏエマルジョンに比べ
て粘度が低くて取り扱いやすく、しかもセメントとの親
和性に優れているという特徴を有している。The mixing ratio of water (A) to oily substance (C) is preferably oily substance: water = 1: 1.5 or more. When the ratio of oily substance: water is less than 1: 1.5, the viscosity and thixotropy of the obtained O / W emulsion (I) are undesirably high. The O / W emulsion (I) thus obtained has the characteristics that it has a lower viscosity than the W / O emulsion of the same composition, is easy to handle, and has excellent affinity with cement.
【００１５】次いで、本発明においては前記方法で得ら
れたＯ／Ｗエマルジョン（Ｉ）に、セメント（Ｂ）、必
要に応じて補強繊維（Ｄ）、或いは追加の水（Ａ）や油
性物質（Ｃ）を連続混練装置に供給して混練することに
より、原料として使用したＯ／Ｗエマルジョン（Ｉ）が
Ｗ／Ｏエマルジョンに転化して本発明のセメント含有Ｗ
／Ｏエマルジョン組成物（ＩＩ）が得られるのである。
連続混練装置としては、連続ニーダー、二軸押出機等が
挙げられる。Next, in the present invention, the O / W emulsion (I) obtained by the above method is added to the cement (B), if necessary, the reinforcing fiber (D), or additional water (A) or oily substance ( C) is supplied to a continuous kneading apparatus and kneaded, whereby the O / W emulsion (I) used as a raw material is converted into a W / O emulsion, and the cement-containing W of the present invention is converted.
Thus, an / O emulsion composition (II) is obtained.
Examples of the continuous kneading device include a continuous kneader and a twin-screw extruder.
【００１６】このようにして得られた本発明のセメント
含有Ｗ／Ｏエマルジョン組成物（ＩＩ）は、押出成形
法、射出成形法、注型法、プレス成形法等、従来から知
られている可塑物の成形方法によって各種形状に成形
し、次いで養生固化させてセメント成形品とすることが
できる。The thus-obtained cement-containing W / O emulsion composition (II) of the present invention can be prepared by a conventional plasticizing method such as an extrusion molding method, an injection molding method, a casting method or a press molding method. It can be molded into various shapes according to the molding method of the product and then cured and solidified to obtain a cement molded product.
【００１７】[0017]
【実施例】以下に本発明を実施例によって具体的に説明
するが、本発明はそれらによって何ら限定されるもので
はない。本実施例においては、以下の原材料を使用し
た。 ＜水（Ａ）＞ 水道水 ＜セメント（Ｂ）＞ 普通ポルトランドセメント ＜油性物質（Ｃ）＞ スチレンモノマーとトリメチロールプロパントリメタク
リレートを重量比１００：１で混合したものを使用し
た。 ＜乳化剤（Ｅ）＞ ソルビタンモノオレート（ＨＬＢ価＝４．０） ＜重合開始剤＞ ｔ−ブチルパーオキシベンゾエート ＜繊維（Ｄ）＞ ポリプロピレン繊維EXAMPLES The present invention will be described in more detail with reference to the following examples, which should not be construed as limiting the invention thereto. In this example, the following raw materials were used. <Water (A)> Tap water <Cement (B)> Ordinary Portland cement <Oilous substance (C)> A mixture of a styrene monomer and trimethylolpropane trimethacrylate at a weight ratio of 100: 1 was used. <Emulsifier (E)> Sorbitan monooleate (HLB value = 4.0) <Polymerization initiator> t-butyl peroxybenzoate <Fiber (D)> Polypropylene fiber
【００１８】以下の方法で水（Ａ）と油性物質（Ｃ）と
からなる各種エマルジョンを調製してその性質を評価し
た。 製造例１ 上記油性物質（Ｃ）に、乳化剤（Ｅ）及び重合開始剤
を、乳化剤（Ｅ）：油性物質（Ｃ）：重合開始剤が重量
比で１：３．０３：０．０３になるように溶解混合して
ビニルモノマー溶液となし、水（Ａ）６８．８重量部を
ミキサーにて６００ｒｐｍで攪拌しながら、ビニルモノ
マー溶液８．９重量部（油性物質（Ｃ）は６．６重量
部）を徐々に添加してＯ／Ｗエマルジョン（Ｉ）を形成
させた。Various emulsions comprising water (A) and oily substance (C) were prepared by the following methods, and their properties were evaluated. Production Example 1 The emulsifier (E) and the polymerization initiator were added to the oily substance (C), and the weight ratio of the emulsifier (E): the oily substance (C): the polymerization initiator was 1: 3.03: 0.03. 8.8 parts by weight of the vinyl monomer solution (6.6 parts by weight of the oily substance (C)) while stirring and mixing 68.8 parts by weight of water (A) with a mixer at 600 rpm. Part) was gradually added to form an O / W emulsion (I).
【００１９】製造例２ ビニルモノマー溶液８．９重量部（油性物質（Ｃ）は
６．６重量部）をミキサーにて６００ｒｐｍで攪拌しな
がら、徐々に水（Ａ）６８．８重量部を添加した以外は
製造例１と同様にしてＷ／Ｏエマルジョンを形成させ
た。Production Example 2 While stirring 8.9 parts by weight of the vinyl monomer solution (6.6 parts by weight of the oily substance (C)) with a mixer at 600 rpm, 68.8 parts by weight of water (A) was gradually added. A W / O emulsion was formed in the same manner as in Production Example 1 except for the above.
【００２０】参考例１、２ 製造例１で形成されたＯ／Ｗエマルジョン（Ｉ）と製造
例２で形成されたＷ／Ｏエマルジョンのセメント（Ｂ）
に対するなじみ易さを比較するために、ポリエチレン製
ビーカーに、エマルジョン７７．７重量部とセメント１
５７．９重量部を各々投入し、攪拌速度６００ｒｐｍで
攪拌混合した際の、投入直後における混合物の見かけ体
積（初期見かけ体積（Ｖｓ））、攪拌混合してこの見か
け体積が最低量になるまでの攪拌時間（ｔ）、及びその
ときの見かけ体積（最終見かけ体積（Ｖｅ））を測定し
てセメントとのなじみやすさを評価した。結果を表１に
示す。Reference Examples 1 and 2 Cement of the O / W emulsion (I) formed in Production Example 1 and the W / O emulsion formed in Production Example 2 (B)
77.7 parts by weight of the emulsion and cement 1
When 57.9 parts by weight were charged and stirred and mixed at a stirring speed of 600 rpm, the apparent volume of the mixture immediately after the charging (initial apparent volume (Vs)), and the mixture was stirred and mixed until the apparent volume became the minimum amount. The stirring time (t) and the apparent volume at that time (final apparent volume (Ve)) were measured to evaluate the ease of adaptation to the cement. Table 1 shows the results.
【００２１】[0021]
【表１】 [Table 1]
【００２２】表１からも明らかなように、エマルジョン
の状態を変えた以外は全く同じ条件であるにも拘わら
ず、Ｗ／Ｏエマルジョンを使用した場合（参考例２）
は、最終見かけ体積（Ｖｅ）が約１３０ｃｍ３であるの
に対して、投入直後の初期見かけ体積（Ｖｓ）が約２０
０ｃｍ３であり約１．５倍にもなって嵩張っていること
がわかる。また、見かけ体積が最低量になるまで（なじ
み合うまで）に１０秒の攪拌時間（ｔ）が必要であっ
た。一方、本発明の製造方法で用いるＯ／Ｗエマルジョ
ン（Ｉ）を使用した場合（参考例１）は、投入後直ちに
見かけ体積が最低量の約１３０ｃｍ３となり、Ｗ／Ｏエ
マルジョンに比べてＯ／Ｗエマルジョン（Ｉ）の方がセ
メントと非常になじみやすいという結果が得られた。As is clear from Table 1, the W / O emulsion was used under the same conditions except that the state of the emulsion was changed (Reference Example 2).
Means that the final apparent volume (Ve) is about 130 cm 3 , while the initial apparent volume (Vs)
It can be seen that it is 0 cm 3 , about 1.5 times larger and bulky. In addition, a stirring time (t) of 10 seconds was required until the apparent volume became the minimum amount (until it became compatible). On the other hand, when the O / W emulsion (I) used in the production method of the present invention was used (Reference Example 1), the apparent volume immediately after the introduction was reduced to a minimum amount of about 130 cm 3 , which was lower than that of the W / O emulsion. The result showed that the W emulsion (I) was more readily compatible with the cement.
【００２３】製造例３〜９ 水（Ａ）と製造例１で使用したビニルモノマー溶液とを
表２に示す配合割合で、Ｏ／Ｗエマルジョン（Ｉ）を形
成させる場合は、水（Ａ）をミキサーにて６００ｒｐｍ
で攪拌しながら、ビニルモノマー溶液を徐々に添加し、
一方、Ｗ／Ｏエマルジョンを形成させる場合は、ビニル
モノマー溶液をミキサーにて６００ｒｐｍで攪拌しなが
ら、徐々に水（Ａ）を添加してエマルジョンを形成し
た。得られたエマルジョンの粘度及びチクソトロピー指
数は以下の方法で測定した。粘度はＢＭ型粘度計を用い
て、６ｒｐｍと６０ｒｐｍで測定を行った。また、せん
断速度依存性（チクソトロピー性）を示す指標としてチ
クソトロピー指数を以下の式に基づいて算出した。 （チクソトロピー指数）＝（６ｒｐｍでの粘度）／（６
０ｒｐｍでの粘度）Production Examples 3 to 9 When the water (A) and the vinyl monomer solution used in Production Example 1 were mixed at the mixing ratio shown in Table 2 to form an O / W emulsion (I), water (A) was used. 600 rpm with a mixer
While stirring with, gradually add the vinyl monomer solution,
On the other hand, in the case of forming a W / O emulsion, water (A) was gradually added while stirring the vinyl monomer solution at 600 rpm with a mixer to form an emulsion. The viscosity and thixotropy index of the obtained emulsion were measured by the following methods. The viscosity was measured at 6 rpm and 60 rpm using a BM type viscometer. In addition, a thixotropy index was calculated based on the following equation as an index indicating the shear rate dependence (thixotropic property). (Thixotropic index) = (viscosity at 6 rpm) / (6
(Viscosity at 0 rpm)
【００２４】[0024]
【表２】 [Table 2]
【００２５】表２からも明らかなように製造例３〜７の
本発明に係るＯ／Ｗエマルジョン（Ｉ）は、製造例８、
９に係るＷ／Ｏエマルジョンに比べて粘度が低く、しか
もチクソトロピー指数も低いため取り扱いやすいことが
わかる。また、油性物質（Ｃ）に対する水（Ａ）の配合
割合が多くなるほど粘度が低下して取り扱いやすいこと
がわかる。As is clear from Table 2, the O / W emulsions (I) of Production Examples 3 to 7 according to the present invention were prepared in Production Example 8,
9, the viscosity is lower and the thixotropy index is lower than that of the W / O emulsion according to No. 9, so that it is easy to handle. In addition, it can be seen that as the mixing ratio of water (A) with respect to the oily substance (C) increases, the viscosity decreases and the handling becomes easier.
【００２６】実施例 あらかじめ調製した製造例７のＯ／Ｗエマルジョン
（Ｉ）をタンクから配管を通じて６３．３重量部、セメ
ント（Ｂ）１３２．６重量部、補強繊維（Ｄ）２．９重
量部の配合割合で連続ニーダーに供給して、回転数２０
０ｒｐｍで混練した。その結果、Ｏ／Ｗエマルジョン
（Ｉ）はＷ／Ｏエマルジョンに転化して、均質なセメン
ト含有Ｗ／Ｏエマルジョン組成物（ＩＩ）を吐出量２０
０ｋｇ／ｈｒで安定して生産することができた。連続ニ
ーダーの入口付近の状態を観察したところ、原材料のニ
ーダーへのかみ込みは良好でフィードスクリュー部での
滞留は見られなかった。また、定量供給性も良好であ
り、長時間連続運転しても配管の屈曲部位に滞留するこ
とはなかった。Example 6/3 parts by weight of the O / W emulsion (I) of Preparation Example 7 prepared in advance from a tank through a pipe, 132.6 parts by weight of cement (B), 2.9 parts by weight of reinforcing fiber (D) To a continuous kneader at a mixing ratio of
Kneaded at 0 rpm. As a result, the O / W emulsion (I) is converted into a W / O emulsion, and a homogeneous cement-containing W / O emulsion composition (II) is discharged at a discharge rate of 20%.
It could be produced stably at 0 kg / hr. Observation of the state near the inlet of the continuous kneader showed that the raw materials had been well trapped in the kneader, and no stagnation was observed in the feed screw portion. In addition, the quantitative supply property was good, and there was no stagnation at the bent portion of the pipe even after continuous operation for a long time.
【００２７】[0027]
【効果】本発明の方法において使用する水（Ａ）と油性
物質（Ｃ）とからなるＯ／Ｗエマルジョン（Ｉ）は、同
じ組成のＷ／Ｏエマルジョンに比べ粘度及びチクソトロ
ピー性が低いため、配管内の中心付近と管壁付近での粘
度差が少なくなり、滞留もしにくい。その結果、均一な
組成で安定的に連続定量供給することが可能となった。
更にＯ／Ｗエマルジョン（Ｉ）は、連続相が水（Ａ）で
あるため、セメント（Ｂ）粉体の間隙や空隙中の空気と
容易に置換し、連続混練装置の入り口付近での原材料体
積が瞬時に減少して連続混練装置にかみこみやすくな
り、原材料供給量を増やしても滞留して詰まることな
く、また連続混練装置で混練することによりＷ／Ｏエマ
ルジョンに転化するため、セメント成形品の成形材料と
して好適な均質なセメント含有Ｗ／Ｏエマルジョン組成
物（ＩＩ）を安定して大量生産することが可能となっ
た。The O / W emulsion (I) comprising the water (A) and the oily substance (C) used in the method of the present invention has a lower viscosity and thixotropic property than the W / O emulsion having the same composition. The difference in viscosity between the vicinity of the center of the inside and the vicinity of the tube wall is reduced, and the stagnation hardly occurs. As a result, it has become possible to stably and continuously supply with a uniform composition.
Furthermore, since the continuous phase of the O / W emulsion (I) is water (A), the O / W emulsion (I) easily replaces the air in the gaps and voids of the cement (B) powder, and the raw material volume near the entrance of the continuous kneading apparatus. Is reduced instantaneously and becomes easy to bite into the continuous kneading device. Even if the raw material supply amount is increased, it does not stay and clog, and is converted into a W / O emulsion by kneading with the continuous kneading device. It has become possible to stably mass-produce a homogeneous cement-containing W / O emulsion composition (II) suitable as a molding material for (1).
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０４Ｂ 24:26 Ｃ０４Ｂ 24:26 Ｇ 24:04） 24:04） (72)発明者 近藤 準士 香川県丸亀市中津町1515番地 大倉工業株 式会社内 (72)発明者 松田 ▲ひで▼明 香川県丸亀市中津町1515番地 大倉工業株 式会社内 (72)発明者 吉田 繁夫 大阪府豊中市新千里西町１丁目１番４号 ナショナル住宅産業株式会社内 (72)発明者 北川 聡 大阪府豊中市新千里西町１丁目１番４号 ナショナル住宅産業株式会社内 (72)発明者 佐藤 寛 大阪府豊中市新千里西町１丁目１番４号 ナショナル住宅産業株式会社内 Ｆターム(参考） 4G012 PA24 PB16 PB27 PB31 4G035 AB40 AB43 AE13 ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) C04B 24:26 C04B 24:26 G 24:04) 24:04) (72) Inventor Junji Kondo Kagawa 1515 Nakatsu-cho, Marugame-shi Okura Industrial Co., Ltd. 1-4-1 National Housing Industry Co., Ltd. (72) Inventor Satoshi Kitagawa 1-4-1 Shinsenri Nishimachi, Toyonaka City, Osaka Prefecture National Housing Industry Co., Ltd. (72) Inventor Hiroshi Sato New Toyonaka City, Osaka Prefecture 1-4 1-4 Senri Nishimachi National Housing Industry Co., Ltd. F-term (reference) 4G012 PA24 PB16 PB27 PB31 4G035 AB40 AB43 AE13
Claims (4)
るＯ／Ｗエマルジョン（Ｉ）と、セメント（Ｂ）を連続
混練装置に供給して混練することを特徴とする成形品成
形用のセメント含有Ｗ／Ｏエマルジョン組成物（ＩＩ）
の製造方法。1. A molded article characterized in that an O / W emulsion (I) formed from water (A) and an oily substance (C) and a cement (B) are supplied to a continuous kneading apparatus and kneaded. W / O Emulsion Composition for Cement (II)
Manufacturing method.
油性物質（Ｃ）を乳化剤（Ｅ）の存在下で混合すること
により形成されたものであることを特徴とする請求項１
記載のセメント含有Ｗ／Ｏエマルジョン組成物（ＩＩ）
の製造方法。2. The O / W emulsion (I) is formed by mixing water (A) and an oily substance (C) in the presence of an emulsifier (E). 1
Described W / O emulsion composition containing cement (II)
Manufacturing method.
オン性界面活性剤であることを特徴とする請求項２記載
のセメント含有Ｗ／Ｏエマルジョン組成物（ＩＩ）の製
造方法。3. The method for producing a cement-containing W / O emulsion composition (II) according to claim 2, wherein the emulsifier (E) is a nonionic surfactant having an HLB value of 3 to 9. .
（ＩＩ）が、更に補強繊維（Ｄ）を含有していることを
特徴とする請求項１乃至３のいずれかに記載のセメント
含有Ｗ／Ｏエマルジョン組成物（ＩＩ）の製造方法。4. The cement-containing W / O emulsion according to claim 1, wherein the cement-containing W / O emulsion composition (II) further contains a reinforcing fiber (D). A method for producing the emulsion composition (II).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000233365A JP2002047040A (en) | 2000-08-01 | 2000-08-01 | Method of producing w/o emulsion containing cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000233365A JP2002047040A (en) | 2000-08-01 | 2000-08-01 | Method of producing w/o emulsion containing cement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002047040A true JP2002047040A (en) | 2002-02-12 |
Family
ID=18725892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000233365A Pending JP2002047040A (en) | 2000-08-01 | 2000-08-01 | Method of producing w/o emulsion containing cement |
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| Country | Link |
|---|---|
| JP (1) | JP2002047040A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005067961A (en) * | 2003-08-26 | 2005-03-17 | Kubota Matsushitadenko Exterior Works Ltd | Cement composite material |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5650160A (en) * | 1979-09-26 | 1981-05-07 | Jirou Takei | Cementtcontaining coating composition |
| JPS61163156A (en) * | 1985-01-09 | 1986-07-23 | 大倉工業株式会社 | Manufacture of plastic concrete |
| JPS6360143A (en) * | 1986-09-01 | 1988-03-16 | 花王株式会社 | Cement admixing agent |
| JPH0130778B2 (en) * | 1984-07-14 | 1989-06-21 | Okura Industrial Co Ltd | |
| JPH02150455A (en) * | 1988-12-01 | 1990-06-08 | Dainippon Ink & Chem Inc | Resin composition for hydraulic silicate material |
| JPH03279246A (en) * | 1990-03-29 | 1991-12-10 | Okura Ind Co Ltd | Production of molded plate of cement |
| JPH0796508A (en) * | 1993-09-29 | 1995-04-11 | Toray Ind Inc | Production of extrusion molded object from hydraulic composition |
| JPH0796507A (en) * | 1993-09-30 | 1995-04-11 | Toray Ind Inc | Production of extrusion molded object from hydraulic composition |
| JPH07126056A (en) * | 1993-10-26 | 1995-05-16 | Toray Ind Inc | Production of extrusion molded article of hydraulic composition |
-
2000
- 2000-08-01 JP JP2000233365A patent/JP2002047040A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5650160A (en) * | 1979-09-26 | 1981-05-07 | Jirou Takei | Cementtcontaining coating composition |
| JPH0130778B2 (en) * | 1984-07-14 | 1989-06-21 | Okura Industrial Co Ltd | |
| JPS61163156A (en) * | 1985-01-09 | 1986-07-23 | 大倉工業株式会社 | Manufacture of plastic concrete |
| JPS6360143A (en) * | 1986-09-01 | 1988-03-16 | 花王株式会社 | Cement admixing agent |
| JPH02150455A (en) * | 1988-12-01 | 1990-06-08 | Dainippon Ink & Chem Inc | Resin composition for hydraulic silicate material |
| JPH03279246A (en) * | 1990-03-29 | 1991-12-10 | Okura Ind Co Ltd | Production of molded plate of cement |
| JPH0796508A (en) * | 1993-09-29 | 1995-04-11 | Toray Ind Inc | Production of extrusion molded object from hydraulic composition |
| JPH0796507A (en) * | 1993-09-30 | 1995-04-11 | Toray Ind Inc | Production of extrusion molded object from hydraulic composition |
| JPH07126056A (en) * | 1993-10-26 | 1995-05-16 | Toray Ind Inc | Production of extrusion molded article of hydraulic composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005067961A (en) * | 2003-08-26 | 2005-03-17 | Kubota Matsushitadenko Exterior Works Ltd | Cement composite material |
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