JP4589632B2 - Adhesive composition for building materials - Google Patents
Adhesive composition for building materials Download PDFInfo
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- JP4589632B2 JP4589632B2 JP2004017437A JP2004017437A JP4589632B2 JP 4589632 B2 JP4589632 B2 JP 4589632B2 JP 2004017437 A JP2004017437 A JP 2004017437A JP 2004017437 A JP2004017437 A JP 2004017437A JP 4589632 B2 JP4589632 B2 JP 4589632B2
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- 239000000853 adhesive Substances 0.000 title claims description 82
- 230000001070 adhesive effect Effects 0.000 title claims description 82
- 239000004566 building material Substances 0.000 title claims description 15
- 239000000203 mixture Substances 0.000 title claims description 13
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 30
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 30
- 239000004567 concrete Substances 0.000 claims description 19
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 claims description 16
- 238000006116 polymerization reaction Methods 0.000 claims description 9
- 229920003086 cellulose ether Polymers 0.000 claims description 7
- 238000007127 saponification reaction Methods 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000006261 foam material Substances 0.000 claims 2
- 229920000609 methyl cellulose Polymers 0.000 description 18
- 239000001923 methylcellulose Substances 0.000 description 18
- 235000010981 methylcellulose Nutrition 0.000 description 18
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 16
- 238000002156 mixing Methods 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 239000011810 insulating material Substances 0.000 description 13
- 239000010440 gypsum Substances 0.000 description 12
- 229910052602 gypsum Inorganic materials 0.000 description 12
- 239000000654 additive Substances 0.000 description 9
- 238000007718 adhesive strength test Methods 0.000 description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 7
- 239000006260 foam Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000004794 expanded polystyrene Substances 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000011381 foam concrete Substances 0.000 description 2
- -1 hydroxypropoxyl Chemical group 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 229910001562 pearlite Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical group COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- AWMVMTVKBNGEAK-UHFFFAOYSA-N Styrene oxide Chemical compound C1OC1C1=CC=CC=C1 AWMVMTVKBNGEAK-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- NEHMKBQYUWJMIP-NJFSPNSNSA-N chloro(114C)methane Chemical compound [14CH3]Cl NEHMKBQYUWJMIP-NJFSPNSNSA-N 0.000 description 1
- 229920006248 expandable polystyrene Polymers 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000010299 mechanically pulverizing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229940050176 methyl chloride Drugs 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
Images
Classifications
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- 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
- C04B28/14—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 calcium sulfate cements
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00637—Uses not provided for elsewhere in C04B2111/00 as glue or binder for uniting building or structural materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Description
本発明は、有機系発泡断熱材のパネルをコンクリート躯体、軽量コンクリート躯体、或いは軽量気泡コンクリート躯体に対して張りつけるための建材用接着剤組成物に関する。 The present invention relates to an adhesive composition for building materials for attaching an organic foam insulation panel to a concrete frame, a lightweight concrete frame, or a lightweight cellular concrete frame.
コンクリート構造物等の躯体の表面にパネルを取り付ける工法として、パネルの表面に接着剤を塗布し、その後、当該パネルを躯体に対して直接押しつけて圧着させるものが知られている。この種の接着剤としては、例えば、合成ゴム等を主成分とした有機系の接着剤、或いは石膏を主成分とした無機系の接着剤が知られている（特許文献１、図１）。
石膏系の接着剤は接着強度が有機系の接着剤に比べて低く用途が限定（例えば、石膏ボード等）される。また、その使用方法は石膏を水練りした後、躯体に点在的に付着させて使用するが、石膏系の接着剤とパネルが接着されるまでの間に、水練りした石膏の水分が躯体に吸収されないようにしておく必要がある。そのため保水効果を高めるために、接着剤にはパーライト或いはバーミキュライト等の骨材を含ませている（保水材として使用）。そして、使用時にはこぶし大の塊に練って使用することで躯体１に対する接触面積を少なくしている。このように使用することで、更に保水効果を高めている。
A gypsum adhesive has a lower adhesive strength than an organic adhesive and has a limited application (for example, gypsum board). In addition, it is used after kneading gypsum in water and then being scattered and attached to the housing. The gypsum moisture that has been kneaded with water until the gypsum adhesive and panel are bonded together. It is necessary to prevent it from being absorbed into the body. Therefore, in order to enhance the water retention effect, the adhesive contains aggregates such as pearlite or vermiculite (used as a water retention material). And the contact area with respect to the housing 1 is made small by kneading and using it for the lump of a fist large at the time of use. By using in this way, the water retention effect is further enhanced.
ところで、躯体１と仕上げ板２との間に他の建材（例えば、断熱材等）を介在させる場合には壁全体の厚みが増すため、接着剤３の薄塗りが要望されるが、石膏系の接着剤は、保水剤として骨材を使用しているため上記要請（接着剤の薄塗り）に応ずることができず、更には、接着強度のアップという点においても改良の余地があった。また、有機系のものは薄塗りが可能で接着強度もあるが、有機溶剤を含んでおり作業環境への配慮が必要となる。
本発明は上記のような事情に基づいて完成されたものであって、薄塗りが可能で、作業環境にやさしい建材用接着材組成物を提供することを目的とする。
By the way, when another building material (for example, a heat insulating material) is interposed between the housing 1 and the finishing plate 2, the thickness of the entire wall increases, so that a thin coating of the adhesive 3 is required. The above adhesives cannot meet the above requirements (thin coating with an adhesive) because aggregates are used as water retention agents, and there is still room for improvement in terms of increasing adhesive strength. In addition, organic materials can be thinly coated and have adhesive strength, but they contain an organic solvent and require consideration for the working environment.
This invention is completed based on the above situations, Comprising: It aims at providing the adhesive composition for building materials which can be thinly coated and is easy to work environment.
上記の目的を達成するための手段として、請求項１の発明は、有機系発泡材のパネルのうちコンクリート躯体に張り合わされる接着面の全面に塗られて前記有機系発泡材のパネルを前記コンクリート躯体に対して張り合わせる建材用接着剤組成物であって、半水石膏８０重量部〜９７重量部、硬化調整剤０．１重量部〜１重量部、水溶性セルロースエーテル０．０３重量部〜０．５重量部、有機樹脂系の糊材０．５重量部〜３重量部を含み、骨材を含まないところに特徴を有する。
尚、有機樹脂系の糊剤としては酢酸ビニル系、アクリル系の樹脂粉末、或いはポリビニルアルコールが使用可能である。
また、水溶性セルロースエーテルとしては、セルロールにエーテル剤として塩化メチルを反応させたメチルセルロール、或いはセルロースに異なるエーテル化剤（塩化メチル、酸化プロピレン、酸化スチレンを混合させたもの）を反応させて生成されるヒドロキシプロポキシルセルロースエーテル、ヒドロキシエトキシルセルロースエーテルが使用可能である。
As a means for achieving the above object, the invention according to claim 1 is characterized in that the organic foam panel is applied to the entire surface of the adhesive surface of the organic foam panel bonded to the concrete frame, and the concrete foam panel is applied to the concrete foam. It is an adhesive composition for building materials to be bonded to a casing, and hemihydrate gypsum 80 parts by weight to 97 parts by weight, a curing regulator 0.1 parts by weight to 1 part by weight, water-soluble cellulose ether 0.03 parts by weight It is characterized in that it contains 0.5 parts by weight, 0.5 parts by weight to 3 parts by weight of an organic resin paste, and does not contain aggregates.
As the organic resin paste, vinyl acetate, acrylic resin powder, or polyvinyl alcohol can be used.
Moreover, as water-soluble cellulose ether, methyl cellulose obtained by reacting cellulose with methyl chloride as an ether agent, or a different etherifying agent (a mixture of methyl chloride, propylene oxide and styrene oxide) is reacted with cellulose. The produced hydroxypropoxyl cellulose ether and hydroxyethoxyl cellulose ether can be used.
請求項２の発明は、請求項１に記載のものにおいて、前記有機樹脂系の糊材はポリビニルアルコールであるところに特徴を有する。 The invention of claim 2 is characterized in that, in the invention of claim 1, the organic resin paste material is polyvinyl alcohol.
請求項３の発明は、請求項２に記載のものにおいて、前記ポリビニルアルコールの鹸化度は７７ｍｏｌ％から９０ｍｏｌ％であるところに特徴を有する。
請求項４の発明は、請求項２又は請求項３に記載のものにおいて、前記ポリビニルアルコールの重合度は１０００以上であるところに特徴を有する。
The invention of claim 3 is characterized in that, in the invention of claim 2, the saponification degree of the polyvinyl alcohol is from 77 mol% to 90 mol%.
The invention of claim 4 is characterized in that, in the invention of claim 2 or 3 , the degree of polymerization of the polyvinyl alcohol is 1000 or more.
＜請求項１の発明＞
本願の建材用接着剤組成物によれば適度な保水性が得られ、十分な接着強度を確保できる。更に、保水剤としてはパーライト等の骨材を含むものが従来より知られているが、これに替えて水溶性のセルロースエーテルを使用しているから、骨材の場合と比較して斑なく接着剤を薄塗りすることが出来できる。
また、成分として有機溶剤が含まれていないため作業環境への配慮等を行う必要がない。
<Invention of Claim 1>
According to the adhesive composition for building materials of the present application, appropriate water retention is obtained, and sufficient adhesive strength can be ensured. Furthermore, water-retaining agents that contain aggregates such as pearlite have been conventionally known, but instead of this, water-soluble cellulose ether is used, so there is no unevenness compared to aggregates. The agent can be applied thinly.
Moreover, since no organic solvent is contained as a component, it is not necessary to consider the working environment.
＜請求項２の発明＞
ポリビニルアルコールは、酢酸ビニル系、アクリル系のものに比べて保水性が高いから保水効果が高まり石膏の水和反応が確実に行われる。
<Invention of Claim 2>
Polyvinyl alcohol has higher water retention than vinyl acetate and acrylic, so that the water retention effect is enhanced and the gypsum hydration reaction is reliably performed.
＜請求項３の発明＞
ポリビニルアルコールの鹸化度が７７ｍｏｌ％から９０ｍｏｌ％の範囲内にあれば、水への溶解性が良好となる。
＜請求項４の発明＞
ポリビニルアルコールの重合度が高くなるとポリビニルアルコールの粘性が高まるから、接着剤全体としての接着強度も高まる。
<Invention of Claim 3 >
If the degree of saponification of polyvinyl alcohol is within the range of 77 mol% to 90 mol%, the solubility in water will be good.
<Invention of Claim 4 >
When the degree of polymerization of polyvinyl alcohol increases, the viscosity of polyvinyl alcohol increases, so that the adhesive strength of the adhesive as a whole also increases.
本実施形態の建材用接着剤組成物（以下、単に接着剤とする）は半水石膏、硬化調整剤、メトローズ（保水剤）及びポリビニルアルコール（糊剤）を含んで構成された粉末タイプであって、接着剤１００重量部に対して水を約４０重量部加えて混練して使用される。
ここで、半水石膏とは例えば天然石膏、化学石膏等を焼成することによって製造され、水和硬化性を有するものである。炭酸カルシウムは石灰石、貝殻、白亜などＣａＣＯ３を主成分とする天然原料を機械的に粉砕したものである。
The adhesive composition for building materials of the present embodiment (hereinafter simply referred to as an adhesive) is a powder type comprising hemihydrate gypsum, a curing regulator, metroise (water retention agent), and polyvinyl alcohol (glue). Then, about 40 parts by weight of water is added to 100 parts by weight of the adhesive and kneaded.
Here, the hemihydrate gypsum is produced by firing natural gypsum, chemical gypsum, or the like and has hydration curability. Calcium carbonate is obtained by mechanically pulverizing natural raw materials mainly composed of CaCO 3 such as limestone, shells and chalk.
また、接着剤の配合比率は次述する接着強度試験（パネル剥離試験）、接着剤粘度の測定に基づいて算定され、配合比率が半水石膏８０重量部〜９７重量部、硬化調整剤０．１重量部〜１重量部、メチルセルロース０.０３重量部〜０．５重量部、ポリビニルアルコール０．５重量部〜３重量部、その他添加剤であれば使用可能であることがわかった。 The blending ratio of the adhesive is calculated based on the adhesive strength test (panel peeling test) described below and the measurement of the adhesive viscosity. It was found that 1 to 1 part by weight, 0.03 to 0.5 part by weight of methylcellulose, 0.5 to 3 parts by weight of polyvinyl alcohol, and other additives can be used.
＜接着強度試験＞
接着強度試験並びに接着剤粘度の測定について説明する。
接着強度試験の試験方法は接着剤を水練りし、これを一辺が約６０ｍｍの正方形状をなす発泡ポリスチレン製のパネルに塗りつけ、その後、当該パネルをコンクリート躯体の表面に押しつけて張り合わせる。続いて、張りつけたパネルを一辺が４０ｍｍの正方形状にカットするとともに、パネルに対し試験器で剥離方向に力を加えてゆく。そして、コンクリート躯体からパネルを剥離させ、その際の剥離強度、すなわち接着強度を測定するものであって、これを保水剤（メチルセルロース）の配合比率を種々変更して行った。
尚、試験は次の条件に従って行った。
１）接着剤の成分のうちメチルセルロース以外の配合比率は半水石膏８７重量部、炭酸カルシウム９重量部、硬化調整剤０．３重量部、ポリビニルアルコール２重量部、その他添加剤とした。また、ポリビニルアルコールの鹸化度は８７ｍｏｌ％のものを使用し、重合度は１０００から１５００のものを使用し、半水石膏の粒度は８０００のものを使用した。
尚、炭酸カルシウムは混水量や作業性を微調整するために配合されるものであって（添加剤の一種）、接着強度等に寄与するものではない。
２）パネルに対する接着剤の塗布厚は約４ｍｍ（圧着後の厚さは約２ｍｍ）とした。
３）接着剤１００重量部に対して水４０重量部を混合し、約３０秒間練り合わせた。
４）試験時の室温は２３°Ｃ、湿度は５０％ＲＨとし、パネルを張り合わせた後、９６時間後に試験器によりパネルを剥離させた。
＜接着粘度の測定＞
粘度については水練り完了後５分経過した後に、粘度測定器により測定をおこなった。尚、粘度について測定を行うのは、接着剤の粘度が高くなりすぎると、パネルに接着剤を薄塗りする際に接着剤の伸びが悪くなり、又、接着剤が鏝から離れ難くなって、作業性が低下してしまうためである。
<Adhesive strength test>
The adhesive strength test and the measurement of the adhesive viscosity will be described.
In the test method of the adhesive strength test, the adhesive is kneaded with water, and this is applied to a panel made of expanded polystyrene having a square shape of about 60 mm on one side, and then the panel is pressed against the surface of the concrete frame. Subsequently, the pasted panel is cut into a square shape with a side of 40 mm, and a force is applied to the panel in the peeling direction with a tester. Then, the panel was peeled from the concrete casing, and the peel strength at that time, that is, the adhesive strength was measured, and this was performed by changing the blending ratio of the water retention agent (methyl cellulose).
The test was conducted according to the following conditions.
1) Among the components of the adhesive, the blending ratio other than methylcellulose was 87 parts by weight of hemihydrate gypsum, 9 parts by weight of calcium carbonate, 0.3 parts by weight of a curing modifier, 2 parts by weight of polyvinyl alcohol, and other additives. Polyvinyl alcohol having a saponification degree of 87 mol%, a polymerization degree of 1000 to 1500, and a hemihydrate gypsum particle size of 8000 was used.
Calcium carbonate is added to finely adjust the amount of mixed water and workability (a kind of additive) and does not contribute to adhesive strength.
2) The thickness of the adhesive applied to the panel was about 4 mm (the thickness after pressure bonding was about 2 mm).
3) 40 parts by weight of water was mixed with 100 parts by weight of the adhesive and kneaded for about 30 seconds.
4) The room temperature during the test was 23 ° C. and the humidity was 50% RH. After the panels were bonded together, the panels were peeled off by a tester after 96 hours.
<Measurement of adhesive viscosity>
The viscosity was measured with a viscosity measuring instrument after 5 minutes had elapsed after completion of water kneading. In addition, the viscosity is measured when the viscosity of the adhesive becomes too high, when the adhesive is thinly applied to the panel, the elongation of the adhesive is deteriorated, and the adhesive is difficult to be separated from the flaw, This is because workability is lowered.
上記試験より表１の結果が得られた。
次に、前記した接着強度試験並びに粘度測定を以下の条件のもとで、ポリビニルアルコールの配合比率を種々変更して行った。
１）接着剤の成分のうちポリビニルアルコール以外の配合比率は半水石膏８７重量部、硬化調整剤０．３重量部、メチルセルロース０．１重量部、炭酸カルシウムその他添加剤とした。
２）その他の試験条件については、メチルセルロースの場合と同じ条件設定とした。
Next, the above-mentioned adhesive strength test and viscosity measurement were performed under various conditions with various blending ratios of polyvinyl alcohol.
1) Among the components of the adhesive, the blending ratio other than polyvinyl alcohol was 87 parts by weight of hemihydrate gypsum, 0.3 parts by weight of a curing regulator, 0.1 parts by weight of methylcellulose, calcium carbonate and other additives.
2) About other test conditions, it was set as the same conditions as the case of methylcellulose.
上記試験より表２の結果が得られた。
次に、前記した接着強度試験並びに粘度測定を以下の条件のもとで、半水石膏の配合比率を種々変更して行った。
１）接着剤の成分のうち半水石膏以外の配合比率は硬化調整剤０．３重量部、メチルセルロース０．１重量部、ポリビニルアルコール２重量部、炭酸カルシウム及びその他添加剤とした。
２）その他の試験条件については、メチルセルロースの場合と同じ条件設定とした。
Next, the above-described adhesive strength test and viscosity measurement were performed under various conditions with various mixing ratios of hemihydrate gypsum.
1) The blending ratio of the adhesive components other than hemihydrate gypsum was 0.3 parts by weight of the curing modifier, 0.1 part by weight of methylcellulose, 2 parts by weight of polyvinyl alcohol, calcium carbonate and other additives.
2) About other test conditions, it was set as the same conditions as the case of methylcellulose.
上記試験より表３の結果が得られた。
次に、ポリビニルアルコールの鹸化度を種々変更して、以下の条件のもと接着強度試験を行った。
１）接着剤は半水石膏８７重量部、炭酸カルシウム９重量部、硬化調整剤０．３重量部、メチルセルロース０．１重量部、ポリビニルアルコール２重量部、その他添加剤とした。
２）その他の試験条件については、メチルセルロースの場合と同じ条件設定とした。
Next, the adhesive strength test was performed under the following conditions with various changes in the degree of saponification of polyvinyl alcohol.
1) The adhesive was 87 parts by weight of hemihydrate gypsum, 9 parts by weight of calcium carbonate, 0.3 parts by weight of a curing regulator, 0.1 parts by weight of methylcellulose, 2 parts by weight of polyvinyl alcohol, and other additives.
2) About other test conditions, it was set as the same conditions as the case of methylcellulose.
上記試験より表４の結果が得られた。
次に、ポリビニルアルコールの重合度を種々変更して、以下の条件のもと接着強度試験を行った。
１）建材用接着剤は半水石膏８７重量部、炭酸カルシウム９重量部、硬化調整剤０．３重量部、メチルセルロース０．１重量部、ポリビニルアルコール２重量部とし、その他添加剤とした。
２）その他の試験条件については、メチルセルロースの場合と同じ条件設定とした。
Next, the degree of polymerization of polyvinyl alcohol was variously changed, and an adhesive strength test was performed under the following conditions.
1) The adhesive for building materials was 87 parts by weight of hemihydrate gypsum, 9 parts by weight of calcium carbonate, 0.3 parts by weight of a curing regulator, 0.1 parts by weight of methylcellulose, 2 parts by weight of polyvinyl alcohol, and other additives.
2) About other test conditions, it was set as the same conditions as the case of methylcellulose.
上記試験より表５の結果が得られた。
次に、半水石膏の粒度を種々変更して、以下の条件のもと可使時間の比較を行った。ここで、可使時間とは、水練りした後に接着剤が固化し始めるまでの時間、すなわち接着剤を水練りした後、パネル側への塗布作業を行うまでの時間的な余裕である。
１）接着剤は半水石膏８７重量部、炭酸カルシウム９重量部、硬化調整剤０．３重量部、水溶性セルロースエーテル０．１重量部、ポリビニルアルコール２重量部、その他添加剤とした。
２）その他の試験条件については、メチルセルロースの場合と同じ条件設定とした。
Next, the particle size of hemihydrate gypsum was variously changed, and the pot life was compared under the following conditions. Here, the pot life is the time until the adhesive starts to solidify after being kneaded with water, that is, the time margin from the time when the adhesive is kneaded to the application to the panel side.
1) The adhesive was 87 parts by weight of hemihydrate gypsum, 9 parts by weight of calcium carbonate, 0.3 parts by weight of a curing regulator, 0.1 parts by weight of water-soluble cellulose ether, 2 parts by weight of polyvinyl alcohol, and other additives.
2) About other test conditions, it was set as the same conditions as the case of methylcellulose.
上記試験より表６の結果が得られた。
次に施工例について説明する。
本施工例において使用される接着剤３０は粉末であって、その配合比率は半水石膏８７重量部、硬化調整剤０．３重量部、メチルセルロース０．１重量部、ポリビニルアルコール２重量部、炭酸カルシウム９重量部、その他添加剤である。施工にあたっては、接着剤１００重量部に対して水４０重量部を加えて、約３０秒間水練りする。尚、メチルセルロースとしては信越化学工業株式会社製の９０ＳＨ−３００００の品番のものを使用し、また、ポリビニルアルコールとしては日本合成化学工業株式会社製のＧＭ−１４Ｓの品番のものを使用した。
Next, a construction example will be described.
The adhesive 30 used in this construction example is powder, and the blending ratio is 87 parts by weight of hemihydrate gypsum, 0.3 parts by weight of a curing regulator, 0.1 parts by weight of methylcellulose, 2 parts by weight of polyvinyl alcohol, carbonic acid. 9 parts by weight of calcium and other additives. In the construction, 40 parts by weight of water is added to 100 parts by weight of the adhesive and kneaded with water for about 30 seconds. In addition, the thing of the product number of 90SH-30000 by Shin-Etsu Chemical Co., Ltd. was used as methylcellulose, and the product number of GM-14S made by Nippon Synthetic Chemical Industry was used as polyvinyl alcohol.
また、図３に示す４０は接着剤３０をパネル状の発泡ポリスチレン断熱材（以下、単に断熱材とする）２０に対して塗りつける鏝であるが、その前縁部及び側縁部には径が約５ｍｍの半円状の溝４０ａが一定ピッチで複数個設けられている。そして、図１に示すように鏝４０で、断熱材２０の接着面に水練りされた接着剤３０を左右に塗り合わせてゆく。この際に、鏝４０の側縁部（溝４０ａが設けられた側）をパネル２０の表面側に斜めに当てて（逆側の縁は浮いた状態とし、鏝４０の角度は約６０度とする）塗り付ける。すると、断熱材２０にはその接着面の全面に亘って接着剤３０が薄塗りされるとともに、溝４０ａと対応した部分には接着剤３０が高さ約４ｍｍ、幅約５ｍｍ、全体としては縞状に盛られる。その後、断熱材２０をコンクリート躯体１０に対して圧着してやれば縞状に肉盛りされた部分の接着剤３０がコンクリート躯体１０の接触面全体に広がり、断熱材２０はコンクリート躯体１０に対して直張りされることとなる。
尚、圧着により接着剤３０がコンクリート躯体１０の表面の凹凸に沿って広がるから、コンクリート躯体１０の表面に凹凸があっても、しっかりと断熱材２０を張り合わせることが出来る。また、接着後における接着剤３０の厚みはほぼ２ｍｍである。
Further,
In addition, since the adhesive 30 spreads along the unevenness of the surface of the
このように接着剤３０の各成分が所定の重量比率であれば適度な保水性が得られ、接着剤３０を薄塗りした場合であっても十分な接着強度を確保できる。従って、石膏ボードに比べて接着に不向きな有機系のパネル（発泡ポリスチレン断熱材２０）であっても躯体への張り合わせを容易に行うことが可能となるし、躯体表面１０ａから断熱材表面２０ａまでの厚み（図２におけるＣ寸法）が、従来のこぶし大の塊に練って使用する接着材の場合と比較して薄く出来る。また、成分として有機溶剤が含まれていないから、作業環境への配慮等の必要がない。
Thus, if each component of the adhesive 30 is a predetermined weight ratio, moderate water retention is obtained, and sufficient adhesive strength can be ensured even when the adhesive 30 is thinly coated. Therefore, even an organic panel (foamed polystyrene heat insulating material 20) that is not suitable for bonding compared to a gypsum board can be easily attached to the housing, and from the
＜他の実施形態＞
本発明は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本発明の技術的範囲に含まれ、さらに、下記以外にも要旨を逸脱しない範囲内で種々変更して実施することができる。
<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
（１）本施工例においては躯体をコンクリート製とし、またパネルを発泡ポリスチレン製の断熱材としたが、躯体については、例えば、軽量コンクリート躯体、或いは軽量気泡コンクリート躯体であってもよく、パネルとしては、例えば、ポリウレタン製等の他の断熱材等であってもよい。 (1) In this construction example, the casing is made of concrete, and the panel is made of expanded polystyrene. However, the casing may be, for example, a lightweight concrete casing or a lightweight cellular concrete casing. May be other heat insulating materials such as made of polyurethane, for example.
１０…コンクリート躯体
２０…発泡ポリスチレン断熱材
３０…建材用接着剤組成物
DESCRIPTION OF
Claims (4)
半水石膏８０重量部〜９７重量部、硬化調整剤０．１重量部〜１重量部、水溶性セルロースエーテル０．０３重量部〜０．５重量部、有機樹脂系の糊材０．５重量部〜３重量部を含み、骨材を含まないことを特徴とする建材用接着剤組成物。 It is an adhesive composition for building materials that is applied to the entire surface of an adhesive surface that is bonded to a concrete frame among the panels of an organic foam material, and bonds the panel of the organic foam material to the concrete frame,
Hemihydrate gypsum 80 parts by weight to 97 parts by weight, curing regulator 0.1 parts by weight to 1 part by weight, water-soluble cellulose ether 0.03 parts by weight to 0.5 parts by weight, organic resin paste 0.5 part by weight The adhesive composition for building materials characterized by including 3 parts by weight to 3 parts by weight and not including aggregates.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5291038A (en) * | 1976-01-28 | 1977-08-01 | Mitsui Toatsu Chem Inc | Novel adhesive composition |
| JPH10259357A (en) * | 1997-03-19 | 1998-09-29 | Nichias Corp | Adhesive composition for building board |
| JPH11152450A (en) * | 1997-11-21 | 1999-06-08 | Nichias Corp | Adhesive |
| JP2000063785A (en) * | 1998-08-21 | 2000-02-29 | Taiheiyo Cement Corp | Tacky agent and formation of decorative face using the same |
-
2004
- 2004-01-26 JP JP2004017437A patent/JP4589632B2/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5291038A (en) * | 1976-01-28 | 1977-08-01 | Mitsui Toatsu Chem Inc | Novel adhesive composition |
| JPS6114193B2 (en) * | 1976-01-28 | 1986-04-17 | Mitsui Toatsu Chemicals | |
| JPH10259357A (en) * | 1997-03-19 | 1998-09-29 | Nichias Corp | Adhesive composition for building board |
| JPH11152450A (en) * | 1997-11-21 | 1999-06-08 | Nichias Corp | Adhesive |
| JP2000063785A (en) * | 1998-08-21 | 2000-02-29 | Taiheiyo Cement Corp | Tacky agent and formation of decorative face using the same |
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| JP2005206767A (en) | 2005-08-04 |
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