JPH02275741A - Cement composition and production of molded article of cement - Google Patents
Cement composition and production of molded article of cementInfo
- Publication number
- JPH02275741A JPH02275741A JP9612489A JP9612489A JPH02275741A JP H02275741 A JPH02275741 A JP H02275741A JP 9612489 A JP9612489 A JP 9612489A JP 9612489 A JP9612489 A JP 9612489A JP H02275741 A JPH02275741 A JP H02275741A
- Authority
- JP
- Japan
- Prior art keywords
- cement
- phenol resin
- hydraulic cement
- weight
- hydraulic
- 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 47
- 239000000203 mixture Substances 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000005011 phenolic resin Substances 0.000 claims abstract description 32
- 239000011396 hydraulic cement Substances 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000378 calcium silicate Substances 0.000 claims description 8
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 8
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 8
- 239000013078 crystal Substances 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 2
- -1 methylol group Chemical group 0.000 abstract description 2
- 239000011164 primary particle Substances 0.000 abstract description 2
- 239000011163 secondary particle Substances 0.000 abstract description 2
- 238000005452 bending Methods 0.000 description 14
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 11
- 229920001568 phenolic resin Polymers 0.000 description 11
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 4
- 239000003063 flame retardant Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000011398 Portland cement Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- UGGQKDBXXFIWJD-UHFFFAOYSA-N calcium;dihydroxy(oxo)silane;hydrate Chemical compound O.[Ca].O[Si](O)=O UGGQKDBXXFIWJD-UHFFFAOYSA-N 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- MKTRXTLKNXLULX-UHFFFAOYSA-P pentacalcium;dioxido(oxo)silane;hydron;tetrahydrate Chemical compound [H+].[H+].O.O.O.O.[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O MKTRXTLKNXLULX-UHFFFAOYSA-P 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 229910052895 riebeckite Inorganic materials 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/30—Condensation polymers of aldehydes or ketones
- C04B24/302—Phenol-formaldehyde condensation polymers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (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）
本発明は、セメント組成物及びセメント成形体の製造方
法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for producing a cement composition and a cement molded body.
（従来の技術）
建築用材料として、セメント成形体が広（使用されてい
る。この種のセメント成形体には、難燃、軽量で高強度
が要求される。(Prior Art) Cement molded bodies are widely used as building materials. This type of cement molded body is required to be flame retardant, lightweight, and high strength.
セメント成形体は、通常、ポルトランドセメントのよう
な水硬性セメントと水、さらに必要に応じて無機骨材や
石綿等を含有するセメント組成物を、所望の型枠に入れ
て成形しこれを硬化させることにより得られる。Cement molded bodies are usually made by placing a cement composition containing a hydraulic cement such as Portland cement, water, and, if necessary, inorganic aggregate or asbestos, etc. into a desired mold, molding it, and hardening it. It can be obtained by
このようなセメント成形体は、比重が約２．３と重く、
しかも曲げ強度が小さい。軽量化のために無機軽量骨材
を配合すると、曲げ強度がさらに小さ（なる。Such cement molded bodies are heavy with a specific gravity of approximately 2.3,
Moreover, the bending strength is low. When inorganic lightweight aggregate is added to reduce weight, the bending strength becomes even lower.
（発明が解決しようとする課題）
本発明は、上記の問題を解決するもので、その目的とす
るところは、難燃、軽量で曲げ強度が改善されたセメン
ト成形体が得られるセメント組成物及びセメント成形体
の製造方法を提供することにある。(Problems to be Solved by the Invention) The present invention is intended to solve the above-mentioned problems, and its purpose is to provide a cement composition and a cement molded article that is flame retardant, lightweight, and has improved bending strength. An object of the present invention is to provide a method for manufacturing a cement molded body.
（課題を解決するための手段）
本発明のセメント組成物は、ｐＨ９以下の水硬性セメン
トと反応性フェノール樹脂と水とを含有するか、或いは
これに無機軽量骨材を含有するか、或いはこれに更に針
状珪酸カルシウム結晶を含有する。(Means for Solving the Problems) The cement composition of the present invention contains a hydraulic cement having a pH of 9 or less, a reactive phenolic resin, and water, or contains an inorganic lightweight aggregate in this, or It further contains acicular calcium silicate crystals.
また、本発明のセメント成形体の製造方法は、上記のセ
メント組成物を成形し、水硬性セメントを硬化させた後
反応性フェノール樹脂を硬化させることを特徴とする。Furthermore, the method for producing a cement molded body of the present invention is characterized in that the above cement composition is molded, the hydraulic cement is hardened, and then the reactive phenol resin is hardened.
本発明において、ｐＨ９以下の水硬性セメントとしては
、アルミナセメント、焼石膏などが好適に用いられる。In the present invention, alumina cement, calcined gypsum, etc. are preferably used as the hydraulic cement having a pH of 9 or less.
ポルトランドセメントのようなｐＨ９を越える強アルカ
リ性の水硬性セメントを用いると、セメント組成物中の
反応性フェノール樹脂が劣化して硬化しない。一般に、
ｐＨ５〜９の水硬性セメントが好適に用いられる。If a strongly alkaline hydraulic cement with a pH exceeding 9, such as Portland cement, is used, the reactive phenolic resin in the cement composition deteriorates and does not harden. in general,
Hydraulic cement having a pH of 5 to 9 is preferably used.
また、反応性フェノール樹脂としては、メチロール基を
５重量％以上含むフェノール樹脂で一次粒子が２０μ以
下で二次粒子を持つ粉末状のものが好適に用いられる。Further, as the reactive phenol resin, a powdered phenol resin containing 5% by weight or more of methylol groups and having primary particles of 20 μm or less and secondary particles is preferably used.
かかる反応性フェノール樹脂は、ｐＨ９以下の水硬性セ
メント１００重量部に対し、一般に、５〜５０重量部の
範囲で含有される。Such reactive phenolic resin is generally contained in an amount of 5 to 50 parts by weight per 100 parts by weight of hydraulic cement having a pH of 9 or less.
反応性フェノール樹脂が５重量部よりも少ないと、成形
体の曲げ強度があまり向上しない。If the amount of reactive phenol resin is less than 5 parts by weight, the bending strength of the molded article will not improve much.
一方、反応性フェノール樹脂が５０重量部よりも多くな
ると、水硬性セメントが硬化しにくくなる。成形体の難
燃性を大きくするには、反応性フェノール樹脂は５〜２
０重量部の範囲で含有されるのが好ましい。On the other hand, when the amount of reactive phenol resin exceeds 50 parts by weight, the hydraulic cement becomes difficult to harden. In order to increase the flame retardancy of the molded product, the reactive phenol resin should be 5 to 2
It is preferably contained in a range of 0 parts by weight.
また、上記水硬性セメントと反応性フェノール樹脂には
、水が含有される。この水は、水硬性セメント１００重
量部に対し、−Ｃに、１０〜８０重量部の範囲で成形と
硬化に適した量が含有される。この水には、水硬性セメ
ントと反応性フェノール樹脂との接着性を向上させるた
めに、公知のシランカップリング剤を含有させておくの
が好ましい。Further, the hydraulic cement and the reactive phenol resin contain water. This water contains -C in an amount suitable for molding and curing in the range of 10 to 80 parts by weight per 100 parts by weight of hydraulic cement. This water preferably contains a known silane coupling agent in order to improve the adhesiveness between the hydraulic cement and the reactive phenol resin.
本発明のセメント組成物は、ｐＨ９以下の水硬性セメン
トと反応性フェノール樹脂と水とを必須とするが、これ
に更に無機軽量骨材を含有させて、さらに軽量化を行う
ことができる。このような無機軽量骨材としては、抗火
石、膨張頁岩、膨張粘土、パーライト等が用いられ、加
圧成形を行う場合は、英国標準規格（ＢＳ ８１２）
ｒ骨材の破砕試験」における１０％破砕荷重が０．３
ｔｏｎ以上のものが好ましい。The cement composition of the present invention essentially contains a hydraulic cement having a pH of 9 or less, a reactive phenol resin, and water, but can further reduce the weight by containing an inorganic lightweight aggregate. Such inorganic lightweight aggregates include anti-firestone, expanded shale, expanded clay, perlite, etc. When pressure molding is performed, British Standards (BS 812) are used.
The 10% crushing load in the ``R aggregate crushing test'' was 0.3.
ton or more is preferable.
このような無機軽量骨材は、水硬性セメント１００重量
部に対し、一般に、１０〜５０重量部の範囲で含有され
る。無機軽量骨材が５重量部よりも少ないと、軽量化の
効果があまりない。一方、無機軽量骨材が５０重量部よ
りも多くなると、曲げ強度の低下が大きくなる。Such inorganic lightweight aggregate is generally contained in a range of 10 to 50 parts by weight per 100 parts by weight of hydraulic cement. If the inorganic lightweight aggregate is less than 5 parts by weight, the weight reduction effect will not be significant. On the other hand, when the amount of inorganic lightweight aggregate exceeds 50 parts by weight, the bending strength decreases significantly.
また、本発明のセメント組成物には、上記無機軽量骨材
とともに針状珪酸カルシウム結晶を含有させて、無機軽
量骨材の含有により低下する曲げ強度を補強することが
できる。このような針状珪酸カルシウム結晶としては、
ゾノトライト、トバモライト、ヒレブランダイトなどが
ある。Further, the cement composition of the present invention can contain acicular calcium silicate crystals together with the above-mentioned inorganic lightweight aggregate to reinforce the bending strength that is reduced due to the inclusion of the inorganic lightweight aggregate. As such acicular calcium silicate crystals,
These include xonotlite, tobermorite, and hillbrandite.
このような針状珪酸カルシウム結晶は、水硬性セメン）
１００重量部に対し、一般に、３〜５０重量部の範囲で
含有される。針状珪酸カルシウム結晶が３重量部よりも
少ないと、曲げ強度向上の効果があまりない。一方、針
状珪酸カルシウム結晶が５０重量部よりも多くなると、
軽量化が阻害され、また分散性が悪（なり強度が低下す
る。Such acicular calcium silicate crystals are called hydraulic cement)
It is generally contained in a range of 3 to 50 parts by weight per 100 parts by weight. When the amount of acicular calcium silicate crystals is less than 3 parts by weight, the effect of improving bending strength is not so great. On the other hand, when the amount of acicular calcium silicate crystals exceeds 50 parts by weight,
Weight reduction is hindered, and dispersibility is poor (and strength is reduced).
本発明のセメント組成物は、例えば、受型枠に入れられ
、押型に圧力をかけて加圧成形され、所望の形状に成形
される。そして、この成形体は、所定の条件下（例えば
１０〜６０°Ｃ１相対湿度８０％以上で５時間以上）で
放置（養生）され、それにより水硬性セメントが硬化す
る。その後、例えば１００〜２００°Ｃに加熱され、そ
れにより反応性フェノール樹脂が硬化する。かくして、
本発明のセメント成形体が得られる。The cement composition of the present invention is, for example, placed in a receiving mold frame and pressure-molded by applying pressure to a press mold to be molded into a desired shape. Then, this molded body is left to stand (cured) under predetermined conditions (for example, 10 to 60° C., relative humidity of 80% or more, and 80% or more for 5 hours or more), whereby the hydraulic cement hardens. Thereafter, it is heated to, for example, 100 to 200°C, thereby curing the reactive phenolic resin. Thus,
A cement molded article of the present invention is obtained.
反応性フェノール樹脂を水硬性セメントよりも先に硬化
させると、反応性フェノール樹脂の硬化温度が一般に１
００〜２００°Ｃと高いため組成物中の水が蒸発し、そ
のため水硬性セメントは充分な水と反応することができ
ず、大きな曲げ強度は得られない。When the reactive phenolic resin is cured before the hydraulic cement, the curing temperature of the reactive phenolic resin is generally 1.
Since the temperature is as high as 00 to 200°C, the water in the composition evaporates, and therefore the hydraulic cement cannot react with sufficient water and cannot obtain high bending strength.
（作用）
本発明において、ｐｌ＋９以下の水硬性セメントと反応
性フェノール樹脂と水とを含有するセメント組成物を用
いて、水硬性セメントを硬化させた後反応性フェノール
樹脂を硬化させると、水硬性セメントと反応性フェノー
ル樹脂の両方の硬化により、難燃、軽量で曲げ強度が向
上したセメント成形体が得られる。(Function) In the present invention, when a cement composition containing a hydraulic cement with a pl+9 or less, a reactive phenolic resin, and water is used and the reactive phenolic resin is cured after the hydraulic cement is cured, the hydraulic By curing both the cement and the reactive phenolic resin, a cement molded body that is flame retardant, lightweight, and has improved bending strength is obtained.
上記反応性フェノール樹脂の作用機構は必ずしも明らか
でないが、曲げ強度の向上は顕著である。Although the mechanism of action of the above-mentioned reactive phenol resin is not necessarily clear, the improvement in bending strength is remarkable.
（実施例） 以下、本発明の実施例及び比較例を示す。(Example) Examples and comparative examples of the present invention are shown below.
夫施圀ユ
アルミナセメント１００重量部と反応性フェノール樹脂
（ベルパール：カネボウ製）１０重量部と水１９重量部
とを、ミキサー（アイリッヒミキサーＲＶＯ２型：日本
アイリッヒ社製）で混合してセメント組成物を得た。こ
のセメント組成物を受型枠に入れ、押型に１１０ ｋｇ
／ ｃｔＭの圧力をかけてプレス成形した。得られたプ
レス板を６０゛Ｃ２相対湿度９５％以上の雰囲気で１２
時間養生した後、１２０°Ｃで２時間硬化させ、厚さ８
ｍｍのセメント成形体を製造した。A cement composition was prepared by mixing 100 parts by weight of Yusekuni Yualumina cement, 10 parts by weight of a reactive phenol resin (Bell Pearl, manufactured by Kanebo), and 19 parts by weight of water using a mixer (Eirich Mixer RVO2 type, manufactured by Nihon Eirich Co., Ltd.). I got something. This cement composition was put into a receiving mold frame and 110 kg was put into a pressing mold.
Press molding was performed by applying a pressure of /ctM. The obtained press plate was heated at 60°C2 in an atmosphere with a relative humidity of 95% or higher for 12 hours.
After curing for an hour, it was cured at 120°C for 2 hours to a thickness of 8.
A cement molded body of mm was manufactured.
このセメント成形体について、ＪＩＳ Ａ １４０８に
準じて曲げ強度及び気乾比重を測定した。その結果を第
１表に示す。The bending strength and air-dry specific gravity of this cement molded body were measured according to JIS A 1408. The results are shown in Table 1.
２〜１０ び １〜３
セメント組成物の配合及び成形条件を、第１表に示すよ
うに変更したこと以外は、実施例１と同様に行ってセメ
ント成形体を製造した。このセメント成形体について、
実施例１と同様にして曲げ強度及び気乾比重を測定した
。その結果を第１表に示す。2-10 and 1-3 Cement molded bodies were manufactured in the same manner as in Example 1, except that the blending of the cement composition and the molding conditions were changed as shown in Table 1. Regarding this cement molded body,
Bending strength and air-dried specific gravity were measured in the same manner as in Example 1. The results are shown in Table 1.
（以下余白）
（発明の効果）
上述の通り、ｐ１１９以下の水硬性セメントと反応性フ
ェノール樹脂と水とを含有するセメント組成物を用いて
、水硬性セメントを硬化させた後反応性フェノール樹脂
を硬化させることにより、難燃、軽量で曲げ強度が著し
く改善されたセメント成形体が得られる。(Blank below) (Effects of the invention) As mentioned above, using a cement composition containing a hydraulic cement of p119 or less, a reactive phenolic resin, and water, the reactive phenolic resin was cured after the hydraulic cement was cured. By curing, a cement molded product that is flame retardant, lightweight, and has significantly improved bending strength can be obtained.
また、上記セメント組成物に無機軽量骨材を含有させる
と、さらに軽量化が行われる。また、上記セメント組成
物に無機軽量骨材とともに針状珪酸カルシウム結晶を含
有させると、無機軽量骨材の含有により低下する曲げ強
度を補強することができる。Further, when the above cement composition contains an inorganic lightweight aggregate, the weight is further reduced. Further, when the above cement composition contains acicular calcium silicate crystals together with an inorganic lightweight aggregate, it is possible to reinforce the bending strength that decreases due to the inclusion of the inorganic lightweight aggregate.
したがって、このようなセメント成形体は、例えば、住
宅の外装材、内装材、天井材、瓦材として好適に用いら
れる。Therefore, such a cement molded body is suitably used as, for example, an exterior material, an interior material, a ceiling material, or a roof tile material for a house.
Claims (1)
脂と水とを含有するセメント組成物。 ２、ｐＨ９以下の水硬性セメントと反応性フェノール樹
脂と無機軽量骨材と水とを含有するセメント組成物。 ３、ｐＨ９以下の水硬性セメントと反応性フェノール樹
脂と無機軽量骨材と針状珪酸カルシウム結晶と水とを含
有するセメント組成物。 ４、請求項１又は２又は３に記載のセメント組成物を成
形し、水硬性セメントを硬化させた後反応性フェノール
樹脂を硬化させることを特徴とするセメント成形体の製
造方法。[Claims] 1. A cement composition containing a hydraulic cement having a pH of 9 or less, a reactive phenol resin, and water. 2. A cement composition containing a hydraulic cement having a pH of 9 or less, a reactive phenol resin, an inorganic lightweight aggregate, and water. 3. A cement composition containing a hydraulic cement having a pH of 9 or less, a reactive phenol resin, an inorganic lightweight aggregate, acicular calcium silicate crystals, and water. 4. A method for producing a cement molded article, which comprises molding the cement composition according to claim 1, 2, or 3, curing the hydraulic cement, and then curing the reactive phenol resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9612489A JPH02275741A (en) | 1989-04-14 | 1989-04-14 | Cement composition and production of molded article of cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9612489A JPH02275741A (en) | 1989-04-14 | 1989-04-14 | Cement composition and production of molded article of cement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02275741A true JPH02275741A (en) | 1990-11-09 |
Family
ID=14156633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9612489A Pending JPH02275741A (en) | 1989-04-14 | 1989-04-14 | Cement composition and production of molded article of cement |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02275741A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001048630A (en) * | 1999-06-02 | 2001-02-20 | Asano Slate Co Ltd | Inorganic bearing face material and its production |
-
1989
- 1989-04-14 JP JP9612489A patent/JPH02275741A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001048630A (en) * | 1999-06-02 | 2001-02-20 | Asano Slate Co Ltd | Inorganic bearing face material and its production |
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