JPH01103943A - Method for extrusion molding inorganic product - Google Patents
Method for extrusion molding inorganic productInfo
- Publication number
- JPH01103943A JPH01103943A JP26098687A JP26098687A JPH01103943A JP H01103943 A JPH01103943 A JP H01103943A JP 26098687 A JP26098687 A JP 26098687A JP 26098687 A JP26098687 A JP 26098687A JP H01103943 A JPH01103943 A JP H01103943A
- Authority
- JP
- Japan
- Prior art keywords
- cement
- extrusion
- asbestos
- lubricant
- compound
- 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 27
- 238000000034 method Methods 0.000 title claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000004568 cement Substances 0.000 claims abstract description 19
- 239000002245 particle Substances 0.000 claims abstract description 17
- 239000000314 lubricant Substances 0.000 claims abstract description 15
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 12
- 239000010425 asbestos Substances 0.000 claims abstract description 11
- 229910052895 riebeckite Inorganic materials 0.000 claims abstract description 11
- 150000001875 compounds Chemical class 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 6
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 6
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000008117 stearic acid Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000012783 reinforcing fiber Substances 0.000 claims abstract description 5
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims abstract description 4
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims abstract description 4
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000005642 Oleic acid Substances 0.000 claims abstract description 4
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims abstract description 4
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims abstract description 4
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 11
- 239000004615 ingredient Substances 0.000 claims description 5
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 claims description 3
- 239000010954 inorganic particle Substances 0.000 claims description 3
- 239000001993 wax Substances 0.000 claims description 3
- 239000011146 organic particle Substances 0.000 claims description 2
- 239000004576 sand Substances 0.000 abstract description 5
- 239000002002 slurry Substances 0.000 abstract description 5
- 229920000609 methyl cellulose Polymers 0.000 abstract description 3
- 239000001923 methylcellulose Substances 0.000 abstract description 3
- 235000014113 dietary fatty acids Nutrition 0.000 abstract 1
- 239000000194 fatty acid Substances 0.000 abstract 1
- 229930195729 fatty acid Natural products 0.000 abstract 1
- 150000004665 fatty acids Chemical class 0.000 abstract 1
- 235000021313 oleic acid Nutrition 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 235000010981 methylcellulose Nutrition 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 description 1
- DCXXMTOCNZCJGO-UHFFFAOYSA-N Glycerol trioctadecanoate Natural products CCCCCCCCCCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCCCC DCXXMTOCNZCJGO-UHFFFAOYSA-N 0.000 description 1
- 206010058109 Hangnail Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 235000012438 extruded product Nutrition 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Landscapes
- Producing Shaped Articles From Materials (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は無機質製品の押出成形方法に関し、詳しくは
補強繊維として石綿を含まない繊維補強無機質製品の押
出成形方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an extrusion molding method for inorganic products, and more particularly to an extrusion molding method for fiber-reinforced inorganic products that do not contain asbestos as reinforcing fibers.
従来、セメント等を主成分とする無機質製品の補強繊維
として、石綿が非常に有効であることが公知である。It has been known that asbestos is very effective as a reinforcing fiber for inorganic products mainly composed of cement and the like.
特に、上記無ｉ質製品を押出成形で成形する場合、石綿
は押出スラリーの滑性を付与すると共に押出後の成形品
の保型性を付与するなど種々の利点を有する。In particular, when the above-mentioned quality-free product is formed by extrusion molding, asbestos has various advantages such as providing lubricity to the extrusion slurry and providing shape retention to the molded product after extrusion.
しかしながら、石綿は資源枯渇及び公害防止の見地より
使用が制限されつつ有り、無石綿配合の無機質製品の製
造が種々試みられている。However, the use of asbestos is being restricted from the viewpoint of resource depletion and pollution prevention, and various attempts have been made to produce asbestos-free inorganic products.
この石綿に代わる繊維としてガラス繊維、金属繊維ある
いは化学合成繊維等が提案されている。Glass fibers, metal fibers, chemically synthetic fibers, and the like have been proposed as fibers to replace asbestos.
しかしながら、これらはいずれも石綿に比し、繊維形態
が棒状をなすため、押出成形スラリーに対する滑性、粘
性が充分に付与出来ず、成形性が悪く、また成形後のセ
メントマトリックスの強度も充分に向上出来ないと言っ
た問題が育った。However, compared to asbestos, these fibers have a rod-like shape, so they cannot provide sufficient lubricity and viscosity to extrusion molding slurry, resulting in poor moldability and insufficient strength of the cement matrix after molding. I developed a problem that said I couldn't improve.
かかる点に鑑み、無石綿配合とした場合の補強を充分に
得るため、セメントマトリックス自体の結合強度を高め
ることが試みられ、例えば配合原料中に金属石鹸、ワッ
クス等の滑材を添加し、これらを均一に混合することに
より配合物相互の滑性を高め、より、緻密なセメントマ
トリックスとすることが行なわれている。In view of this, attempts have been made to increase the bonding strength of the cement matrix itself in order to obtain sufficient reinforcement when asbestos-free formulations are used. By uniformly mixing these ingredients, the mutual lubricity of the mixture is increased and a denser cement matrix is created.
この手段は、滑材によって粒子相互の均一混合性が高め
られ、セメントマトリックスの強度向上がある程度実現
され得るのであるが、第２図に示すように滑材Ａが他の
粒子Ｂ、Ｃ間に粒状に分散するだけであるので、滑性の
効果は滑材Ａ粒子付哲のみに限られ、マトリックス全体
に滑性効果が発揮されない問題が有った。This means that the lubricant improves the uniformity of mixing between the particles and can improve the strength of the cement matrix to some extent, but as shown in Figure 2, the lubricant A is used between the other particles B and C. Since the lubricant is only dispersed in granular form, the lubricating effect is limited only to the particles of lubricant A, and there is a problem in that the lubricating effect is not exerted on the entire matrix.
この発明は上記問題点に鑑み、無石綿配合でありなから
押出成彩性が良く、しかも製品強度も充分に高め得る無
機質製品の押出成形方法を提供することを目的としてな
されたものである。In view of the above problems, the present invention was made with the object of providing an extrusion molding method for an inorganic product that is asbestos-free, has good extrusion colorability, and can sufficiently increase product strength.
〔問題点を解決する技術〕 ゛
即ち、この発明の無機質製品の押出成形方法はシリカ分
、セメント分及び石綿を含まない補強繊維から成るセメ
ント配合物に耐熱性を有する有機又は無機粒子表面にス
テアリン酸、オレイン酸、又は脂肪族カルボン酸系、あ
るいは各種ワックスなど滑材をコーティングした粒子を
添加し、次いで上記配合成分を水と共に均一混合し押出
成形することを特徴とするものである。[Technology for Solving the Problems] In other words, the extrusion molding method for inorganic products of the present invention involves adding stearin to the surface of heat-resistant organic or inorganic particles in a cement mixture made of reinforcing fibers that do not contain silica, cement, and asbestos. It is characterized by adding particles coated with a lubricant such as acid, oleic acid, aliphatic carboxylic acid, or various waxes, and then uniformly mixing the above ingredients with water and extrusion molding.
この発明において、適用されるセメント配合物としては
、無石綿とされる以外は従来の常法によるものと同じで
あり、例えばシリカ分として珪砂４０〜４７重量％、セ
メント４０〜４７重量％、パルプ３〜６１ｉ量％、など
の配合量とされ、これに外削でメチルセルロースなどの
押出助剤及び必要量の水を添加したものが使用される。In this invention, the applied cement mixture is the same as the conventional method except that it is asbestos-free. For example, the silica content is 40 to 47% by weight of silica sand, 40 to 47% by weight of cement, and pulp. The blending amount is 3 to 61i%, and an extrusion aid such as methyl cellulose and a necessary amount of water are added to this by external milling.
上記配合物に対し、耐熱性を有する粒子表面にステアリ
ン酸、オレイン酸、又は脂肪族カルボン酸系の滑材、あ
るいはワックスなどの滑材をコーティングしたものを添
加するのは、配合添加される粒子表面そのものに滑性を
付与し、混合性を良くするためである。Adding a heat-resistant particle surface coated with a lubricant such as stearic acid, oleic acid, or aliphatic carboxylic acid, or a lubricant such as wax to the above-mentioned compound is the addition of the particles to be blended. This is to impart lubricity to the surface itself and improve mixability.
この滑材のコーティングには、ある程度の温度での熱処
理を要するため、コーティングされる粒子は熱処理時の
温度に対する耐熱性を有していることが必要となる。Since this lubricant coating requires heat treatment at a certain temperature, the particles to be coated need to have heat resistance to the temperature during the heat treatment.
従うで、この処理を行なう粒子として、配合物である炭
酸カルシウム、アルミナ、シリカ等無機粒子が主として
選ばれるがコーティング工程中に若干熱的影響を受ける
ので熱的に安定なものであれば、合成繊維等であっても
良い。Therefore, inorganic particles such as compounded calcium carbonate, alumina, and silica are mainly selected as particles for this treatment, but since they are slightly affected by heat during the coating process, synthetic particles can be used as long as they are thermally stable. It may also be a fiber or the like.
なお、粒子の形状も出来るだけ球形をなすものが望まし
く、これらとしてフライアッシュ、シリカヒユーム、さ
らにはアルミナ、シリカ、他のセラミックの球状粒子な
どが有る。It is desirable that the particles be as spherical as possible, and examples thereof include fly ash, silica hume, alumina, silica, and other ceramic spherical particles.
これらコーティング処理された粒子を他の配合物と共に
混合した場合、第１図に示すように表面が滑材１により
滑性化された粒子２・・・２により一層均−混合され、
緻密な組織の混合物とされる。When these coated particles are mixed with other ingredients, as shown in FIG.
It is considered to be a mixture of dense tissues.
また、この混合物に水、及び押出助剤を添加し、均一混
合後、押出成形する場合、滑材によって押出性も良（な
り、押出抵抗により起因する表面のささくれ、クランク
などが有効に防止される。In addition, when water and an extrusion aid are added to this mixture and extrusion molded after uniform mixing, the extrusion properties are good due to the lubricant, which effectively prevents cracks and cracks on the surface caused by extrusion resistance. Ru.
また、養生硬化時には、添加配合物がきわめて密な状態
となるので、セメントマトリックスの結合強度も高く、
それだけ高強度となし得、無石綿配合と同等以上の強度
となし得るのである。In addition, during curing and curing, the additive mixture becomes extremely dense, so the bonding strength of the cement matrix is high.
The strength can be increased accordingly, and the strength can be equal to or higher than that of asbestos-free formulations.
次に、この発明の実施例を説明する。 Next, embodiments of the invention will be described.
珪砂 ４２．５重量％
セメント ４２．５重量％
パルプ ５ 重量％
上記配合物に対し、ステアリン酸系滑材をコーティング
した炭酸カルシウム粒子を１０重量％添加し、次いで、
これら配合物に外削で１．２重量％のメチルセルロース
及び４０重量％の水を加え均一混合し、このスラリーを
用いて押出成形を行なった。Silica sand 42.5% by weight Cement 42.5% by weight Pulp 5% by weight To the above mixture, 10% by weight of calcium carbonate particles coated with a stearic acid-based lubricant was added, and then,
To these formulations, 1.2% by weight of methyl cellulose and 40% by weight of water were added by external scraping and mixed uniformly, and extrusion molding was performed using this slurry.
この場合、成形性は非常に良く、押出速度は２０ｍ／ｗ
ｉｎが得られ、かつ、押出成形品の表面状態も平滑で全
くささくれ、クランクなどは見られなかった。In this case, the moldability is very good and the extrusion speed is 20 m/w
In addition, the surface condition of the extruded product was smooth, with no hangnails or cracks observed.
比較例として、珪砂４６．５重量％、セメント４６．５
重量％、パルプ５重量％、及びステアリン酸のみを２重
量％の配′合とする他は実施例と同様にして押出成形を
行なったところ、成形性は悪く、押出速度もｌ１ｍ／ｗ
ｉｎと本発明より劣り、かつ、成形直後の表面状態もク
ランクが見られ、良好ではなかった。As a comparative example, silica sand 46.5% by weight, cement 46.5%
When extrusion molding was carried out in the same manner as in the example except that the proportions were 5% by weight, 5% by weight of pulp, and 2% by weight of stearic acid, the moldability was poor and the extrusion speed was 11 m/w.
In addition, the surface condition immediately after molding was not good as cranks were observed.
また、ステアリン酸を４重量％とじ、その分珪砂、及び
セメントの配合量を減じ、同様に行なっても押出速度が
やや向上（１４ｍ／５ｉｎ） シたものの、成形性、表
面平滑性共に本願発明より劣っていた。In addition, even if the same procedure was carried out by adding 4% by weight of stearic acid and reducing the amount of silica sand and cement, the extrusion speed was slightly improved (14 m/5 in), but both the formability and surface smoothness were improved according to the present invention. It was inferior.
この発明は以上説明したように、滑材をそれ単味だけで
なく、粒子表面にコーティングして添加するため、滑材
の表面積の増加によって粒子がきわめて均一に混合され
、より緻密なマトリックスとすることが出来、また、ス
ラリー全体の滑り性も良くなるので石綿配合と同等以上
の成形性、押出速度とすることが可能となるのである。As explained above, in this invention, the lubricant is added not only as a single substance but also as a coating on the particle surface, so that the particles are mixed extremely uniformly by increasing the surface area of the lubricant, resulting in a more dense matrix. In addition, the slipperiness of the slurry as a whole improves, making it possible to achieve moldability and extrusion speed equivalent to or higher than those containing asbestos.
第１図はこの発明の実施例の拡大断面図、第２１１ｆＪ ？ −７２団 FIG. 1 is an enlarged sectional view of an embodiment of the present invention, No. 211fJ ? -72nd group
Claims (1)
維から成るセメント配合物に耐熱性を有する有機又は無
機粒子表面にステアリン酸、オレイン酸、又は脂肪族カ
ルボン酸系、あるいは各種ワックスなど滑材をコーティ
ングした粒子を添加し、次いで上記配合成分を水と共に
均一混合し押出成形することを特徴とする無機質製品の
押出成形方法。(1) A cement compound made of reinforcing fibers that does not contain silica, cement, and asbestos, and a lubricant such as stearic acid, oleic acid, aliphatic carboxylic acid, or various waxes on the surface of heat-resistant organic or inorganic particles. 1. A method for extrusion molding an inorganic product, characterized by adding particles coated with the above ingredients, then uniformly mixing the above ingredients with water, and extruding the mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26098687A JPH01103943A (en) | 1987-10-15 | 1987-10-15 | Method for extrusion molding inorganic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26098687A JPH01103943A (en) | 1987-10-15 | 1987-10-15 | Method for extrusion molding inorganic product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01103943A true JPH01103943A (en) | 1989-04-21 |
Family
ID=17355483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26098687A Pending JPH01103943A (en) | 1987-10-15 | 1987-10-15 | Method for extrusion molding inorganic product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01103943A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0657258A1 (en) * | 1993-12-08 | 1995-06-14 | Stahlton AG | Process for making building elements, in particular from fibre reinforced mineral materials |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61291441A (en) * | 1985-06-18 | 1986-12-22 | 松下電工株式会社 | Manufacture of inorganic hardened body |
-
1987
- 1987-10-15 JP JP26098687A patent/JPH01103943A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61291441A (en) * | 1985-06-18 | 1986-12-22 | 松下電工株式会社 | Manufacture of inorganic hardened body |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0657258A1 (en) * | 1993-12-08 | 1995-06-14 | Stahlton AG | Process for making building elements, in particular from fibre reinforced mineral materials |
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