JPH02229748A - Production of inorganic extrusion molded body - Google Patents
Production of inorganic extrusion molded bodyInfo
- Publication number
- JPH02229748A JPH02229748A JP4918689A JP4918689A JPH02229748A JP H02229748 A JPH02229748 A JP H02229748A JP 4918689 A JP4918689 A JP 4918689A JP 4918689 A JP4918689 A JP 4918689A JP H02229748 A JPH02229748 A JP H02229748A
- Authority
- JP
- Japan
- Prior art keywords
- polyacrylic acid
- molded body
- cement
- derivative
- extrusion molded
- 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
- 238000001125 extrusion Methods 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 229920002125 Sokalan® Polymers 0.000 claims abstract description 20
- 239000004584 polyacrylic acid Substances 0.000 claims abstract description 20
- 239000004568 cement Substances 0.000 claims abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000002002 slurry Substances 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 239000005354 aluminosilicate glass Substances 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 239000012783 reinforcing fiber Substances 0.000 claims abstract description 3
- 239000004576 sand Substances 0.000 claims abstract description 3
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical class [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 235000014692 zinc oxide Nutrition 0.000 claims description 3
- 150000004702 methyl esters Chemical class 0.000 abstract description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract 2
- 238000001723 curing Methods 0.000 abstract 2
- 239000011701 zinc Substances 0.000 abstract 2
- 229910052725 zinc Inorganic materials 0.000 abstract 2
- 229920002319 Poly(methyl acrylate) Polymers 0.000 abstract 1
- 229920000609 methyl cellulose Polymers 0.000 description 7
- 239000001923 methylcellulose Substances 0.000 description 7
- 235000010981 methylcellulose Nutrition 0.000 description 7
- 239000001856 Ethyl cellulose Substances 0.000 description 5
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 5
- 239000000839 emulsion Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 235000010944 ethyl methyl cellulose Nutrition 0.000 description 3
- 229920003087 methylethyl cellulose Polymers 0.000 description 3
- 230000008719 thickening Effects 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000019325 ethyl cellulose Nutrition 0.000 description 2
- 229920001249 ethyl cellulose Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical class COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229920002845 Poly(methacrylic acid) Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 125000004494 ethyl ester group Chemical group 0.000 description 1
- 235000012438 extruded product Nutrition 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 239000007787 solid Substances 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野〕
この発明は無ｎ．質押出成形体の製造方法に関する．
〔従来の技術〕
セメント製品を押出成形法に依って製造する場合、押出
材料に保水性、粘性、塑性変形性などの条件を備えた押
出助剤が必要である．この押出助剤として最も適したも
のとしてメチルセルロース、エチルセルロースが使用さ
れている．
〔従来技術の問題点〕
ところが、上記メチルセルロース、エチルセルロースは
橿めて少量で増粘するから、高粘度液の調製に有利であ
るという利点があるが、配合液の計測、調整に時間がか
かり、調整液に対し粘度変化があるため、取扱いがやっ
かいである欠点が有り、さらに汎用されていないがら高
価である等の問題があった。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a method for producing a quality-free extruded product. [Prior Art] When producing cement products by extrusion, the extrusion material An extrusion aid that satisfies conditions such as water retention, viscosity, and plastic deformability is required. Methyl cellulose and ethyl cellulose are the most suitable extrusion aids. [Problems with conventional technology] However, Methyl cellulose and ethyl cellulose have the advantage of being useful for preparing high viscosity liquids because they increase the viscosity even in small amounts. However, it has the disadvantage that it is troublesome to handle, and furthermore, it is expensive although it is not widely used.
この発明は上記問題点に鑑み、従来のメチルセルロース
、エチルセルロースの押出助剤としての性能を保持し、
かつ、作業性が良好であり製造時の標準作業や工程管理
にバラッキの少ない押出助剤を使用し、容易にセメント
スラリーを押出成形することを目的としてなされたもの
である．〔課題を解決するための技術〕
即ち、この発明の無機質押出成形体の製造方法はセメン
ト、珪砂、補強用繊維、その他がら成るセメント組成物
スラリーにポリアクリル酸もしくはボリアクリル酸誘導
体と曲釦華、又はポリアクリル酸もしくはポリアクリル
酸誘導体とアルミノ珪酸塩ガラスを添加混合し、該混合
原料を押出成形する事を特徴とするものである，
〔作用）
この発明に於いて使用されるポリアクリル酸はポリメチ
ルアクリル酸、ポリエチールアクリル酸、ボリメタアク
リル酸等である。ポリアクリル酸誘導体としてはポリア
クリル酸メチルエステル、ポリアクリル酸エチルエステ
ル、もしくは分子中にカルボキシル基等の官能基をもつ
もの等で、分子量が大きくメチルセルロース、エチルセ
ルロースなどと同じ増粘効果があり、汎用性のあるエマ
ルジョン型のものが好ましく、添加量は対固型分比で０
．２〜５．０重而％、望ましくは０．５〜３．０重Ｈ％
である。In view of the above problems, this invention maintains the performance of conventional methylcellulose and ethylcellulose as extrusion aids,
In addition, it was developed with the aim of easily extruding cement slurry by using an extrusion aid that has good workability and has little variation in standard operations and process control during manufacturing. [Technology for Solving the Problems] That is, the method for producing an inorganic extrusion molded article of the present invention involves adding polyacrylic acid or a polyacrylic acid derivative and a polyacrylic acid derivative to a cement composition slurry consisting of cement, silica sand, reinforcing fibers, and others. , or is characterized by adding and mixing polyacrylic acid or a polyacrylic acid derivative and aluminosilicate glass, and extruding the mixed raw material. [Function] Polyacrylic acid used in this invention are polymethylacrylic acid, polyethylacrylic acid, polymethacrylic acid, etc. Polyacrylic acid derivatives include polyacrylic acid methyl ester, polyacrylic acid ethyl ester, or those with functional groups such as carboxyl groups in the molecule, which have a large molecular weight and have the same thickening effect as methyl cellulose and ethyl cellulose, and are widely used. It is preferable to use an emulsion-type product with a certain amount of properties, and the amount added is 0 in terms of solid content ratio.
．． 2 to 5.0% by weight, preferably 0.5 to 3.0% by weight
It is.
この発明のポリアクリル酸もしくはポリアクリルＦＩ！
誘導体のエマルジョンは調製されたｐＨに依って安定し
、高濃度、低粘度を保っているから、計量作業などの調
製が容易であり、これをセメントスラリーに添加混合し
た場合、ｐｌｌの変化に依りエマルジョンが破壊されて
高粘度に変化し、セメン１−スラリーを増枯する。一方
、上記エマルジョンはチクソ１・ロビー的な性状を呈し
、圧力に対して弱いから押出圧力で流動性を増し、押出
直後、即ら圧力のかからない状態となれば、再び粘度が
復帰するから押出直後の形崩れが起らない。Polyacrylic acid or polyacrylic FI of this invention!
Derivative emulsions are stable depending on the adjusted pH and maintain high concentration and low viscosity, so they are easy to prepare by measuring and mixing. The emulsion is broken and becomes highly viscous, causing the cement 1 slurry to thicken and dry. On the other hand, the above emulsion exhibits thixo-1 lobby-like properties and is weak against pressure, so its fluidity increases with extrusion pressure, and immediately after extrusion, when no pressure is applied, the viscosity returns again, so immediately after extrusion. Does not lose its shape.
この発明のポリアクリル酸、ポリ“アクリルｌｖ誘導体
はカルボキシル基を含有しているから亜鉛華、アルミノ
珪酸塩ガラスに依り架橋が出来る．架橋反応はセメント
成形体の養生時における加熱で行なわれる．
〔実施例〕
次に、この発明の実施例を説明する。Since the polyacrylic acid and polyacrylic lv derivative of this invention contain carboxyl groups, they can be crosslinked with zinc white or aluminosilicate glass.The crosslinking reaction is carried out by heating during curing of the cement molded body. Example] Next, an example of the present invention will be described.
第１表に示す配合材料を同表に示す重量比で配合し、充
分に混練した後、真空押出機により従来周知Ｔ段により
板状体を押出成形し、ｊ￥さ１５ｍｍ、縦横１５０ｎｍ
Ｘ ２００ｍｍの試験片を得、室温にて３日間自然養
生の後オートクレープにより高温高圧養生を行ない、こ
れらにつき表２に示した試験項目につき試験を行八った
。The materials shown in Table 1 were mixed in the weight ratio shown in the same table, thoroughly kneaded, and then extruded into a plate-shaped body using a vacuum extruder using a conventionally well-known T-stage.
A test piece of 200 mm in diameter was obtained, and after natural curing at room temperature for 3 days, high temperature and high pressure curing was performed in an autoclave, and tests were conducted on the test items shown in Table 2.
なお、試験項目のうち、押出成形性は押出成形後の形崩
れの可否を判定したものである。Among the test items, extrusion moldability is a test to determine whether or not the product loses its shape after extrusion molding.
マタ、増粘保水性付与剤にメチルセルロースヲ用いたも
のを比較例として示した。As a comparative example, methylcellulose was used as the thickening and water-retaining agent.
表ｌ
表２
〔効果〕
表２の試験結果から明らかなように、この発明によれば
増粘保水性付与剤にメチルセルロースヲ使用しなくても
、押出成形性、強度等の物性に何ら遜色のない無機質製
品が得られる。Table 1 Table 2 [Effect] As is clear from the test results in Table 2, according to the present invention, even if methylcellulose is not used as the thickening and water retention agent, there is no inferiority in physical properties such as extrudability and strength. No mineral products are obtained.
又この発明はカルボ牛シル基をもつポリ゛？クリル酸も
しくはポリアクリル酸誘導体に架橋剤として亜鉛華、ア
ルミノ珪酸塩ガラスとを添加したものであるから、押出
助剤の不溶化が図れると同時にエマルジョンの状態で使
用出来るから、作業が容易となり、押出成形工程管理、
標準作業が有利となる。Also, this invention is applicable to polyamides having a carboxylic group. Since it is made by adding zinc white or aluminosilicate glass as a crosslinking agent to acrylic acid or a polyacrylic acid derivative, it is possible to insolubilize the extrusion aid and at the same time, it can be used in an emulsion state, making the work easier and extrusion easier. Molding process management,
Standard work is advantageous.
さらに、発明の押出助剤はメチルセルロース、エチルセ
ルロースに比して廉価であり、経済的効果が大きいなど
種々の効果を有する。Furthermore, the extrusion aid of the invention is less expensive than methylcellulose and ethylcellulose, and has various effects such as being highly economical.
Claims (1)
メント組成物スラリーにポリアクリル酸もしくはポリア
クリル酸誘導体と亜鉛華、又はポリアクリル酸もしくは
ポリアクリル酸誘導体とアルミノ珪酸塩ガラスを添加混
合し、該混合原料を押出成形する事を特徴とする無機質
押出成形体の製造方法。(1) Adding and mixing polyacrylic acid or a polyacrylic acid derivative and zinc white, or polyacrylic acid or a polyacrylic acid derivative and aluminosilicate glass to a cement composition slurry consisting of cement, silica sand, reinforcing fibers, etc., A method for producing an inorganic extrusion molded article, which comprises extrusion molding the mixed raw material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4918689A JPH02229748A (en) | 1989-03-01 | 1989-03-01 | Production of inorganic extrusion molded body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4918689A JPH02229748A (en) | 1989-03-01 | 1989-03-01 | Production of inorganic extrusion molded body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02229748A true JPH02229748A (en) | 1990-09-12 |
Family
ID=12824003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4918689A Pending JPH02229748A (en) | 1989-03-01 | 1989-03-01 | Production of inorganic extrusion molded body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02229748A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994024062A1 (en) * | 1993-04-14 | 1994-10-27 | Boral Concrete Products, Inc. | Lightweight concrete roof tiles |
-
1989
- 1989-03-01 JP JP4918689A patent/JPH02229748A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994024062A1 (en) * | 1993-04-14 | 1994-10-27 | Boral Concrete Products, Inc. | Lightweight concrete roof tiles |
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