JPS5965146A - Long panel material having pre-sealing material - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 本発明はセメント系長尺板材の側端部に設けられた実質
的に不実構造部分を接合する場合に優れた施工性、防水
性および経済性を発揮するプレシーリング材を有する長
尺板材に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a pre-sealing material that exhibits excellent workability, waterproofness, and economical efficiency when joining substantially unstructured parts provided at the side ends of cement-based long board materials. The present invention relates to a long plate material having the following characteristics.

従来、ポルトランドセメント、石綿などを原料として作
られたセメント系或いは石・１系、金属系などの板材を
継ぎ合せて壁面を構成し７てゆく建築工法が行なわれて
いる。その際、板材と板材の接合は、これらの板材の長
手方向に設けられた、突き付け、相法り、本実などの各
構造によって行なわれ、また通常、防水と変位吸収のた
めに、その接合部に弾性シーリング材が充填される。BACKGROUND ART Conventionally, a construction method has been used in which walls are constructed by joining together boards made of cement, stone, or metal made from materials such as Portland cement and asbestos. At that time, the joining of the boards is done by various structures such as tsutsuki, otoriori, and honjitsu provided in the longitudinal direction of these boards, and the joining is usually done for waterproofing and displacement absorption. The area is filled with an elastic sealant.

上記板材の側端部が相法シ構造である場合には、一般に
ホットメルトと称されるスチレン、イソプチレン共重合
体、メチ１／ン、ブタジェン共重合体、ポリイソブチレ
ン等の熱可塑性エラストマーをベースポリマーとする合
成樹脂を主成分とする樹脂組成物が使用されることが多
い。しかしながら、長尺板材の接合部が不実構造の場合
には、ホットメルトは採用されていない。この理由は、
相法りの場合には接合部に介在するホットメルトが板材
へ釘を打ち込む力によって圧締されるのに対し、不実構
造の場合は、ホラ！・メルトをその本実部の雌実、雄実
のの間に介在さぞ、これを挾んで施工作業者の手の力に
よって雄実を雌実の中に押込み、水密性を確保できる程
度まで充分に雌、雄実を圧着せしめた後、一方の板材に
釘打をしている。これは、板材の通常２〜３ｍもある長
さ方向に直角な方向のホットメルト全体の反撥弾性が大
きな抵抗力となってか〃り困難な作業となる。しかも、
セメント系の板材では板材の端部の長さ方向の凹凸、曲
り、反りなどがあり相当強くホントメルトを介して雄実
を押込′−！！ないと、板材と板材との嵌合部の全長に
わたって水密性を確保することが出来す、一部に雨洩れ
の恐れを生ずる。When the side edges of the above-mentioned plate material have a phase structure, the base material is a thermoplastic elastomer such as styrene, isobutylene copolymer, methylene 1/1, butadiene copolymer, polyisobutylene, etc., which is generally called hot melt. Resin compositions whose main component is a synthetic resin as a polymer are often used. However, hot melt is not used when the joints of long plate materials have an unreliable structure. The reason for this is
In the case of mutual bonding, the hot melt intervening at the joint is compressed by the force of driving the nail into the board, whereas in the case of unfavorable construction, the hot melt intervening at the joint is compressed by the force of driving the nail into the board.・Place the melt between the female and male fruits of the main body part, and squeeze it and push the male fruit into the female fruit with the force of the construction worker's hands, sufficiently to ensure watertightness. After crimping the female and male fruit on the wood, nails are driven into one of the boards. This is a difficult task because the repulsion of the entire hot melt in a direction perpendicular to the length of the plate material, which is usually 2 to 3 meters, creates a large resistance. Moreover,
Cement-based boards have irregularities, bends, warps, etc. in the length direction of the ends of the boards, so the male fruit must be pushed through the melt with great force! ! Otherwise, watertightness can be ensured over the entire length of the fitting portion between the plates, but there is a risk of rain leaking in a portion.

最近、上記欠点を解決するため、ホットメルトに細かい
泡を多数含ませることが試みられている。Recently, in order to solve the above-mentioned drawbacks, attempts have been made to include a large number of fine bubbles in hot melt.

しかしこの方法では、雄実を押込む労力は少なくてすむ
が以下のような難点があり、実用化に到っていない。す
なわち、通常板材同士の嵌合け、−回で所定の位置に納
められず、再度、機材同士を引離して嵌合をやシ直すこ
とが多い。この場合ホットメルトが押しつぶされて変形
していたり、始めの位置からずれていることがあるとや
り直しをしても完全なシールは出来ない。上記シール材
は長期的にも形状の復元性（弾性）を失わないことが必
須条件である。しかし現在のホットメルトの技術は、上
記の点について完全なものでない。とくにホントメルト
を加熱溶融し、ガスを混入して板材の本実部分に吐出発
泡させることにより、泡を含んだホットメルトを作る場
合には、泡のために断熱性が増すこと、熱容量が減少す
ること、などの理由から吐出されたホットメルトは板材
上で早く冷却し板材への浸透が殆んどなぐアンカー効果
が期待できないので板材への接着力は極めて弱い。However, although this method requires less effort to push the male seeds, it has the following drawbacks and has not been put to practical use. That is, usually when the plates are fitted together, they cannot be placed in the predetermined position after one turn, and the fittings are often re-separated and re-fitted. In this case, if the hot melt is compressed and deformed, or has shifted from its initial position, a complete seal cannot be achieved even if you try again. It is essential that the sealing material does not lose its shape restorability (elasticity) even over a long period of time. However, current hot melt technology is not perfect in this respect. In particular, when hot melt containing bubbles is made by heating and melting hot melt, mixing gas and causing foam to be discharged onto the real part of the board, the foam increases the heat insulation and reduces the heat capacity. For these reasons, the hot melt that is discharged quickly cools down on the plate material and cannot be expected to have an anchoring effect, which hardly prevents it from penetrating into the plate material, so its adhesion to the plate material is extremely weak.

また相法り接合の場合に一液型のウレタン樹脂を用いる
方法が提案されている。しかし−液型のウレタン樹脂は
発泡、硬化が本質的に空気中の湿気に依存している。こ
とから、硬化が極めて遅く、コンベア方式の工場生産に
は適さず、発泡率についても任意に調節することが出来
ない。この点を改良するため板材に塗布した後、この上
に水を噴霧するようなことも提案されているが、発泡は
表面で激しく、内部に向って急速に弱まるため極めて不
均一となり、表面の強度が不当に弱くなシ易く、さらに
発泡率のバラツキも大きく、実用に適さない。なおここ
で硬化とは、硬くなることではなく、発泡して弾性体と
なった発泡体がキュアー（分子架橋）して非粘着化する
ことを意味する。Furthermore, a method using a one-component urethane resin in the case of phase bonding has been proposed. However, the foaming and curing of liquid-type urethane resins essentially depend on moisture in the air. Therefore, curing is extremely slow, making it unsuitable for conveyor-type factory production, and the foaming rate cannot be adjusted arbitrarily. In order to improve this point, it has been proposed to spray water on the board after applying it, but foaming is intense on the surface and rapidly weakens towards the inside, resulting in extremely uneven surface formation. The strength is unduly weak and it is easy to break, and the foaming rate also varies widely, making it unsuitable for practical use. Note that hardening here does not mean becoming hard, but means that the foamed material that has become an elastic body is cured (molecularly crosslinked) and becomes non-adhesive.

本発明は、以上の欠点を種々検討した結果、セメント系
長尺板材の長手方向の側端部に設けられた本実構造の雌
実内側上下の面ふ・よび雄実の上下の表面の中から選ば
れた少なくとも一つの面に二液型発泡性ウレタン樹脂液
を塗布した後、２〜５倍、好ましくは３〜４倍に発泡、
硬化させることによって得られるプレシーリング材を有
する長尺板材を提供することを目的・とするものである
。As a result of various studies on the above-mentioned drawbacks, the present invention has been developed in the upper and lower surfaces of the inside of the female grain of the real fruit structure provided at the longitudinal side ends of the cement-based long board material and the upper and lower surfaces of the male fruit. After applying the two-component foamable urethane resin liquid to at least one surface selected from
It is an object of the present invention to provide a long plate material having a pre-sealing material obtained by curing.

第１図はセメント系長尺板材１の本実構造の一例を示す
ものて、雌実２の内側上下の面２ａ、２ｂおよび雄実３
の上下の表面３　ａ　ｍ　３　ｂから選ばれた少なくと
も一つの面にプレシーリング材ヲ設けることによりセメ
ント系板材において本質的に避けられない成程度の曲シ
ー反りにより或いは施工のバラツキにより生ずる嵌合度
合のバラツキを吸収し易くなる。上記プレシーリング材
は雌実２の奥２ｃまたは雄実３の先端３ｃＶＣ設けても
差支えないが、ここのみに塗布しても通常上記のバラツ
キは吸収出来ない。；またこの嵌合度合のバラツキは本
発明に用いるウレタン樹脂の発泡倍率を充分大キくシて
プレシーリング材の圧縮率が大きくなるように設定して
も対応出来る。FIG. 1 shows an example of the actual structure of a cement-based long board 1, in which the inner and upper surfaces 2a and 2b of the female fruit 2 and the male fruit 3 are shown.
By providing a pre-sealing material on at least one surface selected from the upper and lower surfaces 3a m 3b of the cement board, the fitting caused by the essentially unavoidable degree of bending or warping of the cement board or due to variations in construction. It becomes easier to absorb variations in degree. The above-mentioned pre-sealing material may be applied to the inner part 2c of the female fruit 2 or the tip 3c of the male fruit 3, but the above-mentioned variations cannot usually be absorbed even if it is applied only here. Also, this variation in the degree of fitting can be dealt with by setting the expansion ratio of the urethane resin used in the present invention to be sufficiently large so as to increase the compression ratio of the pre-sealing material.

現在市販の又は今後市場に出ることが予想されるセメン
ト系板材は、ウレタンの発泡倍率を２〜６倍好ましくは
３〜５倍にすれば上記バラツキを充分に吸収出来る。６
倍以上ではプレシーリング材の強度低下が犬きぐ、覗扱
う時破損し易く、２倍以下ではバラツキの吸収効果が劣
る。Cement-based board materials currently on the market or expected to be on the market in the future can sufficiently absorb the above-mentioned variations by increasing the foaming ratio of urethane from 2 to 6 times, preferably from 3 to 5 times. 6
If it is more than double the strength, the strength of the pre-sealing material will be reduced and it will be easily damaged when handled with care or inspection, and if it is less than twice the strength, the effect of absorbing variations will be poor.

また施工時圧縮に要する労力も本発明の方がホントメル
トの場合に比して格段に少ない。さらに本発明に用いる
二液型発泡性ウレタン樹脂は、二つの原液を混合するタ
イプであるだめ、ポリイソシアネートを含まないポリエ
ーテル、ポリオールの側の原液に発泡剤、硬化促進剤を
添加し、これによって工場生産時のコンベア速度に合せ
て硬化させることが出来る。Further, the labor required for compaction during construction is significantly less in the present invention than in the case of true melt. Furthermore, since the two-component foamable urethane resin used in the present invention is a type in which two stock solutions are mixed, a blowing agent and a curing accelerator are added to the stock solution on the side of polyether and polyol that do not contain polyisocyanate. This allows curing to match the conveyor speed during factory production.

発泡剤としては水Ｎなど、硬化促進剤としてもアミン系
物質（例えば商品名ダプコ３３ＬＶ）等公知の物質を用
いることが出来る。また混合する二つの原液を一定温に
保って、例えば専用混合注入機を使用して高速混合し、
吐出後数十秒で発泡、ゲル化させることが可能である。As a foaming agent, water N or the like can be used, and as a curing accelerator, a known substance such as an amine substance (for example, trade name DAPCO 33LV) can be used. In addition, the two stock solutions to be mixed are kept at a constant temperature and mixed at high speed using a special mixing injection machine, for example.
It is possible to foam and gel within several tens of seconds after discharging.

このため、プレシーリング材を有する長尺板材の大量生
産が可能となり、発泡、硬化速度が気温、湿度の影響を
受は難く、均一な品質の工場製品を生産することができ
る。For this reason, it is possible to mass-produce long plate materials having a pre-sealing material, and the foaming and curing speeds are hardly affected by temperature and humidity, making it possible to produce factory products of uniform quality.

本発明に使用できるインシアネート、プレポリマーとし
ては、メチレンジフェニルジイソシアネート　（ＭＤＩ
）、）リレンジイソシアネート　（ＴＤｆｌヘキサンメ
チレンジイソシアネー）　　１ｆ）Ｉ）　３どとポリオ
ールからつくられたプレポリマーであるが、中でも引き
裂き強度の強いことがらトリレンジイソシアネートによ
るプレポリマーが優れている。これと混合すべき一方の
液はポリオール類であって硬化剤と呼ばれるが５両液と
もにタレ止め剤、顔料、充填剤を混入して使用すること
も可能である。As the incyanate and prepolymer that can be used in the present invention, methylene diphenyl diisocyanate (MDI
),) lylene diisocyanate (TDfl hexane methylene diisocyanate) 1f) I) It is a prepolymer made from 3 and polyols, but among them, a prepolymer made from tolylene diisocyanate is excellent because of its strong tear strength. One of the liquids to be mixed with this is a polyol and is called a curing agent, but it is also possible to mix an anti-sagging agent, a pigment, or a filler with both liquids.

上記二液型発泡ウレタン樹脂とセメント系板材との密着
性は極めてよい。塗布された樹脂は発泡するまでに板材
に一部含浸するため充分なアンカー効果を発揮して優れ
た接着力を示す。また上記樹脂は、ホットメルトに比し
、長期間の加圧による復元性の低下が少い。このことは
建築用のシーリング材としては重要な長所である。The adhesion between the two-component foamed urethane resin and the cement board material is extremely good. The applied resin partially impregnates the board material before foaming, so it exhibits a sufficient anchoring effect and exhibits excellent adhesive strength. In addition, the above-mentioned resin has less deterioration in restorability due to long-term pressurization than hot melt. This is an important advantage as a sealing material for construction.

また本発明の一つの態様として発泡ウレタン材が嵌合作
業時に相手実部のセメント面で擦られる時の摩擦抵抗を
減するために油等を前もって二つの原液の一方、または
両方に添加しておき、二液が混合、吐出され発泡、硬化
するとともに、上記添加した油等が滲出し、発泡したウ
レタン樹脂の表面を覆い滑剤として作用するものも含ま
れる。Furthermore, in one embodiment of the present invention, oil or the like is added in advance to one or both of the two stock solutions in order to reduce the frictional resistance when the foamed urethane material is rubbed against the cement surface of the mating part during the fitting operation. The two liquids are mixed and discharged, foamed and hardened, and the added oil etc. oozes out and covers the surface of the foamed urethane resin, acting as a lubricant.

この目的に使用される油等とは、天然壕だけ合成の油脂
、液状炭化水素、高級脂肪酸の金属塩である。これらの
油等は多くのものが撥水性であり、プレシーリング材の
防水性の向上にも寄与する。The oils used for this purpose are synthetic oils and fats, liquid hydrocarbons, and metal salts of higher fatty acids. Many of these oils are water repellent and contribute to improving the waterproof properties of the pre-sealing material.

次に実施例および比較例を示し、本発明をざらに詳細に
説明する。EXAMPLES Next, the present invention will be explained in detail with reference to Examples and Comparative Examples.

実施例１ トリレンジインシアネート　ＣＴＤ工）とヂエチレング
リコール〔ＨＯ（Ｃ２Ｈ４０Ｃ２Ｈ４）ＯＨ〕との反応
によって作られた分子末端にインシアネート基を有する
プレポリマーをＡ液とし、プロピンオキサイド、エチレ
ンオキサイド共重合物［［）　（ＣＨＣ馬。Example 1 A prepolymer having an incyanate group at the molecular end produced by the reaction of tolylene diincyanate (CTD) and diethylene glycol [HO(C2H40C2H4)OH] was used as liquid A, and propylene oxide and ethylene oxide were mixed together. Polymer [[) (CHC horse.

ＣＨ２０）ｍ（Ｃ２Ｈ４０）ＯＨ：分子量約１０００］
にアミン系反応促進剤（例えば商品名ダブコ３３　ＬＶ
）および水をそれぞれ混合後の全体に対して１チおよび
２％となるように添加したものをＢ液とする。CH20)m(C2H40)OH: molecular weight approximately 1000]
Add an amine reaction accelerator (for example, DABCO 33 LV (trade name)
) and water were added to the total amount of 1% and 2% of the total after mixing, respectively, to form a B solution.

これらＡ液およびＢ液を専用の混合機（例えばツバコー
社製Ｆ−２００型）に入れ両液の混合比がイソシアネー
ト基とヒドロキシル基の当量比で１：１となるようにす
る。これを１５ミリ厚さのセメント石綿板材の本実構造
の雌内部の下面にコンベア上を走らせながら巾６ミリ、
高さ３ミリの線状に塗布する。室温２７℃で２５秒で発
泡が始り約４０秒で発泡がほぼ終了し、一応硬化し、そ
の時点で板材の包装も可能であシ、さらに２時間後硬化
を終り施工に供しても差支えなかった。このプレシーリ
ング材の発泡倍率は約４倍であった。These A liquid and B liquid are placed in a special mixer (for example, F-200 model manufactured by Tubako Co., Ltd.), and the mixing ratio of both liquids is adjusted to be 1:1 in equivalent ratio of isocyanate groups to hydroxyl groups. While running this on the conveyor on the underside of the female interior of the real structure of cement asbestos board material with a thickness of 15 mm,
Apply in a line 3mm high. Foaming begins in 25 seconds at a room temperature of 27°C, and foaming is almost completed in about 40 seconds, and it is temporarily cured, at which point it is possible to package the board, and after another 2 hours, it is completely cured and can be used for construction. There wasn't. The foaming ratio of this pre-sealing material was approximately 4 times.

この板材を施工して壁面を作ったが、施工性は優れてい
た。これに水道水を注いで水蜜性を調べたが、裏面への
水洩れはなかった。This board material was used to create a wall surface, and the workability was excellent. I poured tap water on this to check the water quality, but there was no water leakage to the back side.

実施例２ 実施例１のＢ液に流動パラフィン（液状炭化水素）を２
チ添加した外は実施例１と全く回じに行なって板材を製
造した。２．５時間後この板材を施工に供したところ、
嵌合作業時に滑かに嵌合し、極めて作業性がよかった。Example 2 Two liquid paraffins (liquid hydrocarbons) were added to liquid B in Example 1.
A plate material was manufactured in exactly the same manner as in Example 1 except that CH was added. After 2.5 hours, this board was used for construction.
They fit together smoothly during the fitting process, and the workability was extremely good.

また、流動パラフィンは板の嵌合によって雄実にも耐着
ｌ〜、その撥水性によシ、ζらに防水性が向上した。In addition, the liquid paraffin is resistant to adhesion even when the plates are fitted, and its water repellency improves waterproofness.

比較例１ 市販の一液型ウレタン樹脂を不実構造の嵌合部を有する
セメント、石綿板材の雌実の内部下面に幅５ｕ、高さ３
朋の線状に塗布した。室温２５°Ｃ５湿度７５％であっ
た。数時間後表面が皮張り状態となったが、該ウレタン
樹脂はセメント石綿板材上に広がり、かつ吸い込捷れる
ため高さは１．７−になり幅９間まで広がった。数日後
硬化状態となったが、この開の発泡倍率は２倍以下であ
り、嵌合した場合充分な圧縮比が得られず、嵌合部隙間
の大きなバラツキをカバー出来ず現実の要求に沿うこと
が出来なかった。Comparative Example 1 A commercially available one-component urethane resin was applied to the inner lower surface of the female grain of cement and asbestos board material having a false structure fitting part, with a width of 5u and a height of 3
I applied it in my line. The room temperature was 25° C. and the humidity was 75%. After several hours, the surface became skinned, but the urethane resin spread over the cement asbestos board and was sucked in, so that the height increased to 1.7 cm and the width increased to 9 cm. Although it became hardened after a few days, the expansion ratio of this expansion was less than 2 times, and when mated, it was not possible to obtain a sufficient compression ratio, and it was not possible to cover the large variation in the gap between the mating parts, which could not meet the actual requirements. I couldn't do it.

比較例２ 市販の一液型ウレタン樹脂の代りに実施例１に挙げたＡ
液を用いた場合も比較例１とはソ同様な結果であつ４た
。Comparative Example 2 A used in Example 1 instead of a commercially available one-component urethane resin
Even when the liquid was used, the results were similar to those of Comparative Example 1.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、セメント系板材の本実構造の−ｃ！Ａ、ｌを
示す斜視図である。Figure 1 shows -c! of the actual structure of cement-based board material. It is a perspective view showing A and l.

Claims (1)

【特許請求の範囲】 （１１セメント系長尺板材の長手方向に沿った側端部に
設けられた実質的に本実構造の雌実の内側上下面および
雄実の上下の表面から選ばれた少なくとも一つの面に二
液型発泡性ウレタン樹脂液を塗布し、発泡、硬化せしめ
てなるプレシーリング材を有する長尺板材。 （２）二液型発泡性ウレタン樹脂液の一方の原液がトリ
１／ンジイソシアネートを含むプレポリマーである特許
請求の範囲第ｆｉ１項記載のプレシーリング材を有する
長尺板材。 （３）　　二液型発泡性ウレタン樹脂液のいずれか一方
の原液または両方の原液に発泡、硬化後表面にじみ出て
、セメント硬化体とウレタン発泡体との摩擦抵抗を低下
させる滑剤を含有している特許請求の範囲第（１）項記
載のプレシーリング材を有する長尺板材。 （４）滑剤が天然または合成の油脂、液状炭化水素、高
級脂肪酸の金属塩のうちから選ばれた少なくとも一つで
ある特許請求の範囲第（３）項記載のプレシーリング材
を有する長尺板材。[Scope of Claims] (11) Selected from the inner upper and lower surfaces of the female fruit and the upper and lower surfaces of the male fruit, which have a substantially real fruit structure provided at the side end along the longitudinal direction of the cement-based long board material. A long plate material having a pre-sealing material made by applying a two-component foamable urethane resin liquid on at least one surface, foaming, and hardening. (2) One stock solution of the two-component foaming urethane resin liquid is A long plate material having a pre-sealing material according to claim 1, which is a prepolymer containing a diisocyanate. (4) A long plate material having a pre-sealing material according to claim (1), which contains a lubricant that oozes out from the surface after hardening and reduces the frictional resistance between the hardened cement body and the urethane foam. A long plate material having a pre-sealing material according to claim (3), wherein the lubricant is at least one selected from natural or synthetic oils and fats, liquid hydrocarbons, and metal salts of higher fatty acids.