JPS6241109B2 - - Google Patents
Info
- Publication number
- JPS6241109B2 JPS6241109B2 JP3464279A JP3464279A JPS6241109B2 JP S6241109 B2 JPS6241109 B2 JP S6241109B2 JP 3464279 A JP3464279 A JP 3464279A JP 3464279 A JP3464279 A JP 3464279A JP S6241109 B2 JPS6241109 B2 JP S6241109B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- rubber
- waterproof sheet
- adhesive
- 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.)
- Expired
Links
- 230000001070 adhesive effect Effects 0.000 claims description 33
- 239000000853 adhesive Substances 0.000 claims description 31
- 229920001971 elastomer Polymers 0.000 claims description 26
- 239000005060 rubber Substances 0.000 claims description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 21
- 239000000945 filler Substances 0.000 claims description 19
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 16
- 229920005549 butyl rubber Polymers 0.000 claims description 12
- 239000012790 adhesive layer Substances 0.000 claims description 11
- 239000000377 silicon dioxide Substances 0.000 claims description 10
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 8
- 239000004014 plasticizer Substances 0.000 claims description 5
- 229920001083 polybutene Polymers 0.000 claims description 5
- 239000004636 vulcanized rubber Substances 0.000 claims description 5
- 239000006229 carbon black Substances 0.000 claims description 4
- 239000004927 clay Substances 0.000 claims description 4
- 229920001577 copolymer Polymers 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 235000019271 petrolatum Nutrition 0.000 claims description 4
- 239000004264 Petrolatum Substances 0.000 claims description 3
- 229920002367 Polyisobutene Polymers 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- 229940066842 petrolatum Drugs 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 238000000034 method Methods 0.000 description 11
- 239000000203 mixture Substances 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 8
- 230000007423 decrease Effects 0.000 description 6
- 238000004078 waterproofing Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000004132 cross linking Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 235000014692 zinc oxide Nutrition 0.000 description 2
- MHKLKWCYGIBEQF-UHFFFAOYSA-N 4-(1,3-benzothiazol-2-ylsulfanyl)morpholine Chemical compound C1COCCN1SC1=NC2=CC=CC=C2S1 MHKLKWCYGIBEQF-UHFFFAOYSA-N 0.000 description 1
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 239000006237 Intermediate SAF Substances 0.000 description 1
- OUBMGJOQLXMSNT-UHFFFAOYSA-N N-isopropyl-N'-phenyl-p-phenylenediamine Chemical compound C1=CC(NC(C)C)=CC=C1NC1=CC=CC=C1 OUBMGJOQLXMSNT-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920003244 diene elastomer Polymers 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- -1 lithopone Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 229940032017 n-oxydiethylene-2-benzothiazole sulfenamide Drugs 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 235000019645 odor Nutrition 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920002589 poly(vinylethylene) polymer Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 239000008262 pumice Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
Description
本発明は屋外の構築物の使用に適した防水シー
トに関する。
屋外の構築物の防水に関しては、従来よりアス
フアルト、シート、塗膜等による防水工法が行わ
れている。しかしながら、アスフアルト防水は悪
臭、火気、作業者の不足等の要因により年々その
施工比率は低下の傾向にあり、一方塗膜防水は現
場で均一な厚みを形成するのがなかなか困難であ
る等の問題により、近年では工場であらかじめ均
一な厚みに成形された現場施工の容易なシート防
水に対する期待が高まりつつある。
シート防水の施工法としては、プライマーや接
着剤をシートの裏面および下地に塗布してシート
貼りする工法と、あらかじめ裏面に未加硫ゴムを
主体とする粘着層を積層したシートを用いプライ
マー等により下地に接着する方法とがあり、とく
に施工の容易な後者のタイプがよく用いられつつ
ある。従来用いられている粘着層は主として未加
橋状態のポリイソブチレン、ブチルゴム、エチレ
ン−プロピレン共重合体（EPR）などを主体と
するものであつた。しかしながら、従来の防水シ
ートは耐水性能および粘着性に関し不充分であ
り、場合によつては充填剤の吸水による膨潤によ
る変形はく離が発生することがあつた。また従来
の粘着層は粘着力の保持を重要視しているため主
に未加橋のブチルゴム（IIR）あるいはEPDMが
使用されているが、夏場の高温の場合、流動が起
り過度にべたつくと同時に粘着剤の形状保持が困
難になることが多い。これを改善するために充て
ん剤としてシリカ（SiO2）の微粒子を使用すると
形状保持性は維持されるが、充てん剤の吸水性が
強く、防水性を低下させるので好ましくない。
本発明者らは、粘着剤層中のポリマー成分を架
橋化すると、シリカの吸水現象が抑制されること
を見出し、四季を通じて安定した状態で使用でき
かつ防水性の優れた防水シートを得ることに成功
し、本発明を達成するに至つた。
すなわち本発明は、加硫ゴム、未加硫ゴムもし
くは樹脂系シートの片面に粘着層を設けてなる防
水シートにおいて、前記粘着層が
(a) 少なくとも50重量％の架橋化耐候性ゴムを含
むゴム100重量部
(b) 粘着性可塑剤200〜1000重量部、および
(c) 充填剤10重量部以上
からなることを特徴とする防水シートに係る。
以下本発明を更に詳細に説明する。
本発明で用いられる架橋化耐候性ゴム(a)は、ブ
チルゴム、エチレン−プロピレン−不飽和成分共
重合体（EPDM）、クロロプレンなどのいわゆる
耐候性ゴムの架橋化物、部分架橋化物である。こ
れらのゴムの架橋化の方法としては、種々の方法
を用いることができるが、例えば重合時、ジビニ
ルベンゼン等の架橋性モノマーを混入し、架橋を
行わせる方法、過酸化物を混在させて架橋を行な
う方法、沃化イソシアネート等を用いる方法（特
公昭53−20072号）、あるいはアルキルハイポハラ
イトと重合性不飽和モノマーとを反応させる方法
（特公昭53−6198号）などがある。
これらの中でも、架橋化ブチルゴム、架橋化
EPDMが好ましく、架橋化ブチルゴムが最も好結
果を与える。本発明においては上記架橋化耐候性
ゴムもしくはこれらの混合物を少くとも50重量％
含有するゴム組成物が用いられる。上記架橋化耐
候性ゴムの分量が50重量％以下では防水性が低下
して好ましくない。ここで架橋化耐候性ゴムと組
合わせるゴムとしては未架橋の耐候性ゴム、ジエ
ンゴム、ジエン−スチレン共重合ゴムなどがあげ
られる。
本発明で用いられる粘着性可塑剤(b)はポリブテ
ン、液状ポリイソブチレン、ワセリンおよびパラ
フインから選ばれた少くとも１つである。
中でもポリブテンが好ましい。こゝで(b)成分の
用いられる量は架橋化耐候性ゴムその他のゴム分
100重量部に対し200〜1000重量部の範囲内で用い
られる。(b)成分が200重量部以下であれば、粘着
性が乏しくなり逆に1000重量部以上であれば得ら
れる組成物は軟かくなりすぎ、流動する恐れがあ
り好ましくない。中でも好ましい範囲は(a)成分
100重量部に対し、200〜400重量部である。
本発明で用いられる充填剤(c)は、シリカ、カー
ボンブラツク、クレー、炭酸カルシウム、炭酸マ
グネシウム、亜鉛華、タルク、アルミナ、マイ
カ、硫酸バリウム、硫酸アルミニウム、リトポ
ン、アスベスト、軽石粉、グラフアイト、二硫化
モリブデン、ガラス粉、酸化チタン、顔料その他
公知の充填剤から選ばれた少くとも１つである。
中でもシリカ、カーボンブラツク、クレーおよ
び炭酸カルシウムの少くとも１つを用いることが
好ましく、更にはシリカを少くともその１成分と
して用いることが好ましい。
ここで用いられる充填剤(c)の量は上述の(a)成分
100重量部当り10重量部以上必要である。
(c)成分の使用量が10重量部以下であると得られ
た粘着層組成物は柔らかくなりすぎ粘着力が不足
し、好ましくない。
一方充填剤の添加量が多すぎると粘着力が低下
するし、充填剤の種類によつては防水性能も低下
する場合があるが、その上限量は充填剤の種類に
よつて異なるので一義的に決めることはできな
い。たとえば最も代表的なシリカを用いる場合、
60重量部以上ではその吸水性のために防水性に悪
影響を及ぼすので10〜60重量部、好ましくは30〜
50重量部添加される。他の充填剤、カーボンブラ
ツクを用いる場合は粘着力を考慮して100重量部
まで加えることができる。またクレーや炭酸カル
シウムでは500重量部まで添加しても粘着力およ
び耐水性が保持される。
本発明の防水シートを形成する粘着層の成分と
しては上述の(a)、(b)および(c)成分が用いられる
が、その他、公知の老化防止剤、安定剤、着色剤
を適宜添加してもよい。
防水シートの基布となるシート状基材は加硫ゴ
ム、未加硫ゴム、もしくは樹脂系のいずれのシー
トを用いてもよい。
防水シート作製に当つては、通常、(a)、(b)およ
び(c)成分を主体とした各成分をニーダー等の混合
装置で混和し、これを上記シート状基材の上に必
要な厚さまで、通常0.2〜10mm塗布もしくは積層
する方法がとられる。しかしながら必ずしもこれ
らの方法には限定されない。
得られた防水シートは、後述する実施例に示す
如く、粘着層の粘度の変化が少く取扱いが容易で
あり、作業性に優れ、かつ防水性、粘着性に優れ
ている。また施工条件によつては下地にプライマ
ーを塗布する工程を省略して本防水シートをその
まま下地に貼着することもできるので施工に要す
る工数を著しく改善することが可能である。
以下実施例により、本発明を具体化するが、必
ずしも記載の範囲に限定されるものではない。
実施例１および比較例１
下記配合物を160℃で20分間加硫した厚さ1.1mm
の加硫ゴムシートを作成した。
エチレン−プロピレン−ジエンモノマー三元
共重合体（注１） 40重量部
１，２−ポリブタジエン（注２） 60 〃
ISAFブラツク 50 〃
プロセスオイル ５ 〃
ステアリン酸 ２ 〃
パラフインワツクス １ 〃
Ｎ−フエニル−N′−イソプロピル−ｐ−フ
エニレンジアミン １ 〃
ロジン ２ 〃
亜鉛華 ５ 〃
硫 黄 ２ 〃
Ｎ−オキシジエチレン−２−ベンゾチアゾー
ルスルフエンアミド １ 〃
（注１）日本合成ゴム(株)製、商品名JSR・
EP33
（注２） 〃 〃 JSR・
RB820
つぎに、表１記載の各組成を有する粘着材を配
合し、上記の加硫ゴムシート上に厚さ0.6mmに塗
布し、防水シートを形成した。
このようにして作成した防水シートをコンクリ
ート上に貼合わせ、その耐水性能および180゜剥
離粘着力を測定した。得られた結果を表１に記載
する。
The present invention relates to a tarpaulin sheet suitable for use in outdoor structures. Regarding the waterproofing of outdoor structures, waterproofing methods using asphalt, sheets, coatings, etc. have been conventionally used. However, the construction rate of asphalt waterproofing is decreasing year by year due to factors such as bad odors, fire, and lack of workers.On the other hand, coating waterproofing has problems such as it is difficult to form a uniform thickness on site. In recent years, expectations have been increasing for waterproofing sheets that are pre-formed to a uniform thickness in a factory and can be easily installed on site. There are two methods for installing sheet waterproofing: one is to apply a primer or adhesive to the back side of the sheet and the base and then paste the sheet, and the other is to use a sheet with an adhesive layer mainly made of unvulcanized rubber laminated on the back side in advance using a primer, etc. There is a method of adhering it to the base, and the latter type, which is easy to install, is becoming more and more popular. Conventionally used adhesive layers have mainly been made of uncrosslinked polyisobutylene, butyl rubber, ethylene-propylene copolymer (EPR), and the like. However, conventional waterproof sheets have insufficient water resistance and adhesive properties, and in some cases deformation and peeling may occur due to swelling of the filler due to water absorption. In addition, conventional adhesive layers place importance on maintaining adhesive strength, so unlinked butyl rubber (IIR) or EPDM is mainly used, but in the high temperatures of summer, they flow and become excessively sticky. It is often difficult for the adhesive to maintain its shape. In order to improve this problem, if fine particles of silica (SiO 2 ) are used as a filler, shape retention is maintained, but this is not preferable because the filler has strong water absorption and reduces waterproofness. The present inventors discovered that crosslinking the polymer component in the adhesive layer suppresses the water absorption phenomenon of silica, and thus obtained a waterproof sheet that can be used stably throughout the year and has excellent waterproof properties. This led to the achievement of the present invention. That is, the present invention provides a waterproof sheet comprising a vulcanized rubber, unvulcanized rubber, or resin sheet with an adhesive layer on one side, wherein the adhesive layer is (a) a rubber containing at least 50% by weight of crosslinked weather-resistant rubber; The present invention relates to a waterproof sheet comprising: (b) 200 to 1000 parts by weight of an adhesive plasticizer; and (c) 10 parts by weight or more of a filler. The present invention will be explained in more detail below. The crosslinked weather-resistant rubber (a) used in the present invention is a cross-linked product or partially cross-linked product of a so-called weather-resistant rubber such as butyl rubber, ethylene-propylene-unsaturated component copolymer (EPDM), and chloroprene. Various methods can be used to crosslink these rubbers, including a method in which crosslinking monomers such as divinylbenzene are mixed during polymerization to effect crosslinking, and a method in which crosslinking is performed by mixing peroxide. A method using iodized isocyanate, etc. (Japanese Patent Publication No. 53-20072), and a method of reacting an alkyl hypohalite with a polymerizable unsaturated monomer (Japanese Patent Publication No. 53-6198). Among these, crosslinked butyl rubber, crosslinked
EPDM is preferred, with crosslinked butyl rubber giving the best results. In the present invention, at least 50% by weight of the above-mentioned crosslinked weather-resistant rubber or mixture thereof is used.
A rubber composition containing the above is used. If the amount of the crosslinked weather-resistant rubber is less than 50% by weight, the waterproof property will deteriorate, which is not preferable. Rubbers to be combined with the crosslinked weather-resistant rubber include uncrosslinked weather-resistant rubber, diene rubber, diene-styrene copolymer rubber, and the like. The adhesive plasticizer (b) used in the present invention is at least one selected from polybutene, liquid polyisobutylene, petrolatum and paraffin. Among them, polybutene is preferred. Here, the amount of component (b) used is based on the amount of crosslinked weather-resistant rubber and other rubber.
It is used in a range of 200 to 1000 parts by weight per 100 parts by weight. If component (b) is less than 200 parts by weight, the adhesiveness will be poor, and if it is more than 1000 parts by weight, the resulting composition will be too soft and may flow, which is not preferable. Among them, the preferred range is component (a)
The amount is 200 to 400 parts by weight per 100 parts by weight. The filler (c) used in the present invention includes silica, carbon black, clay, calcium carbonate, magnesium carbonate, zinc white, talc, alumina, mica, barium sulfate, aluminum sulfate, lithopone, asbestos, pumice powder, graphite, At least one filler selected from molybdenum disulfide, glass powder, titanium oxide, pigments and other known fillers. Among them, it is preferable to use at least one of silica, carbon black, clay, and calcium carbonate, and it is more preferable to use silica as at least one component thereof. The amount of filler (c) used here is the same as that of component (a) above.
10 parts by weight or more is required per 100 parts by weight. When the amount of component (c) used is 10 parts by weight or less, the resulting adhesive layer composition becomes too soft and lacks adhesive strength, which is not preferable. On the other hand, if the amount of filler added is too large, the adhesive force will decrease, and depending on the type of filler, the waterproof performance may also decrease, but the upper limit is unique because it differs depending on the type of filler. I can't decide. For example, when using the most typical silica,
If it exceeds 60 parts by weight, it will have a negative effect on waterproofness due to its water absorption, so it should be 10 to 60 parts by weight, preferably 30 to 60 parts by weight.
50 parts by weight is added. When using other fillers such as carbon black, up to 100 parts by weight can be added in consideration of adhesive strength. In addition, clay and calcium carbonate retain their adhesive strength and water resistance even when added up to 500 parts by weight. The above-mentioned components (a), (b), and (c) are used as the components of the adhesive layer forming the waterproof sheet of the present invention, and in addition, known anti-aging agents, stabilizers, and colorants may be added as appropriate. It's okay. The sheet-like base material serving as the base fabric of the waterproof sheet may be a vulcanized rubber sheet, an unvulcanized rubber sheet, or a resin-based sheet. When producing a waterproof sheet, each component, mainly components (a), (b), and (c), is usually mixed using a mixing device such as a kneader, and this is placed on the sheet-like base material as required. The method used is to apply or laminate layers to a thickness of usually 0.2 to 10 mm. However, the method is not necessarily limited to these methods. As shown in the Examples described later, the obtained waterproof sheet has little change in the viscosity of the adhesive layer, is easy to handle, has excellent workability, and has excellent waterproof properties and adhesive properties. Furthermore, depending on the construction conditions, the step of applying a primer to the base can be omitted and the waterproof sheet can be directly attached to the base, so the number of man-hours required for construction can be significantly improved. The present invention will now be illustrated by examples, but is not necessarily limited to the scope described. Example 1 and Comparative Example 1 The following formulation was vulcanized at 160°C for 20 minutes to a thickness of 1.1 mm.
A vulcanized rubber sheet was created. Ethylene-propylene-diene monomer terpolymer (Note 1) 40 parts by weight 1,2-polybutadiene (Note 2) 60 〃 ISAF Black 50 〃 Process oil 5 〃 Stearic acid 2 〃 Paraffin wax 1 〃 N-Phenyl- N'-isopropyl-p-phenylenediamine 1 〃 Rosin 2 〃 Zinc white 5 〃 Sulfur 2 〃 N-oxydiethylene-2-benzothiazolesulfenamide 1 〃 (Note 1) Manufactured by Nippon Gosei Rubber Co., Ltd., product Name JSR・
EP33 (Note 2) 〃 〃 JSR・
RB820 Next, adhesive materials having the respective compositions listed in Table 1 were blended and coated onto the above vulcanized rubber sheet to a thickness of 0.6 mm to form a waterproof sheet. The waterproof sheet thus prepared was laminated onto concrete, and its water resistance and 180° peel adhesive strength were measured. The results obtained are listed in Table 1.
【表】【table】
【表】
更に、実施例１および比較例１で用いた粘着材
の粘度の温度依存性を測定した。得られた結果を
添付図面に示す。表１に示した結果から、本発明
になる架橋ブチルゴムを用いた防水シート（実施
例１）の防水性能および粘着力は、未架橋ブチル
ゴムを用いたそれよりもはるかに優れていること
がわかる。また、図面から明らかなように本発明
品の粘度の温度依存性は小さく、つまり、夏場
（40℃付近）でも冬場でも粘度の変化なく、取扱
い保存は容易であり作業性に優れていることを示
している。
実施例２−３および比較例２
実施例１と同様にして、ただし、粘着材の配合
を表２に記載した如くして、防水シートを作製
し、耐水性能および粘着力を測定した。得られた
結果を表２に示す。[Table] Furthermore, the temperature dependence of the viscosity of the adhesive materials used in Example 1 and Comparative Example 1 was measured. The results obtained are shown in the attached drawings. From the results shown in Table 1, it can be seen that the waterproof performance and adhesive strength of the waterproof sheet using crosslinked butyl rubber according to the present invention (Example 1) are far superior to those using uncrosslinked butyl rubber. Furthermore, as is clear from the drawings, the temperature dependence of the viscosity of the present invention product is small, meaning that the viscosity does not change in both summer (around 40°C) and winter, and it is easy to handle and store, and has excellent workability. It shows. Examples 2-3 and Comparative Example 2 Waterproof sheets were prepared in the same manner as in Example 1, but with the adhesive formulations shown in Table 2, and their water resistance and adhesive strength were measured. The results obtained are shown in Table 2.
【表】
表２に示される結果から、架橋ブチルゴムを用
いたものもしくは50重量％の架橋ブチルゴムを用
いたものは、未架橋ブチルゴムを用いたものに比
べ、耐水性能、粘着力ともに優れていることが明
らかである。
実施例４および比較例３−４
実施例１と同様にして、ただし、粘着材の組成
を表３に示す如くして防水シートを作製し、その
耐水性能、粘着力を評価した。得られた結果を表
３に示す。[Table] From the results shown in Table 2, products using cross-linked butyl rubber or products using 50% by weight cross-linked butyl rubber are superior to products using uncross-linked butyl rubber in both water resistance and adhesive strength. is clear. Example 4 and Comparative Examples 3-4 Waterproof sheets were prepared in the same manner as in Example 1, except that the composition of the adhesive material was as shown in Table 3, and their water resistance and adhesive strength were evaluated. The results obtained are shown in Table 3.
【表】
表３の結果は、本発明になる実施例４に比し、
充填剤SiO2の配合量が多過ぎた場合（比較例
３）、防水性能、粘着力は共に低下し、また充填
材無配合の場合、粘着力が著しく低下することを
示している。
実施例５および比較例５〜６
実施例１と同様にして、ただし、粘着材の配合
を表４に記載した如くして防水シートを作製し、
耐水性能および粘着力を測定した。得られた結果
を表４に示す。[Table] The results in Table 3 show that compared to Example 4 of the present invention,
It is shown that when the amount of the filler SiO 2 is too large (Comparative Example 3), both waterproof performance and adhesive strength are decreased, and when no filler is blended, the adhesive strength is significantly decreased. Example 5 and Comparative Examples 5 to 6 A waterproof sheet was produced in the same manner as in Example 1, but with the adhesive composition as shown in Table 4.
Water resistance and adhesive strength were measured. The results obtained are shown in Table 4.
【表】
表４に示した結果から、本発明になる実施例５
に比し、ポリブテンの量が200重量部以下のと
き、粘着材の粘度は高くなりすぎ、粘着力は低下
する。また、ポリブテン、ワセリン等の可塑剤の
部数が増大した場合、接着面での粘着性は増加す
るが、凝集エネルギーの低下により粘着力は減少
する。さらにこの場合、粘度も低くなりすぎ、形
状保持も困難となる。
実施例６−７、比較例７
実施例５の配合に充填剤としてシリカのほかに
さらに炭酸カルシウムを併用した場合の粘着力と
耐水性能の評価を行つた。結果を表５に示す。[Table] From the results shown in Table 4, Example 5 according to the present invention
In contrast, when the amount of polybutene is less than 200 parts by weight, the viscosity of the adhesive becomes too high and the adhesive strength decreases. Furthermore, when the number of plasticizers such as polybutene and petrolatum increases, the tackiness at the adhesive surface increases, but the adhesive strength decreases due to a decrease in cohesive energy. Furthermore, in this case, the viscosity becomes too low and shape retention becomes difficult. Examples 6-7, Comparative Example 7 Adhesive strength and water resistance were evaluated when calcium carbonate was used in addition to silica as a filler in the formulation of Example 5. The results are shown in Table 5.
【表】
表５の結果は炭酸カルシウムは400重量部添加
しても耐水性能および粘着力は低下しないことを
示している。[Table] The results in Table 5 show that even when 400 parts by weight of calcium carbonate was added, water resistance and adhesive strength did not decrease.
添付図面は実施例１および比較例１で用いた粘
着材の粘度の温度依存性を示す曲線図である。
The accompanying drawing is a curve diagram showing the temperature dependence of the viscosity of the adhesive used in Example 1 and Comparative Example 1.
Claims (1)
の片面に粘着層を設けてなる防水シートにおい
て、前記粘着層が (a) 少なくとも50重量％の架橋化耐候性ゴムを含
むゴム100重量部 (b) 粘着性可塑剤200〜1000重量部、および (c) 充填剤10重量部以上 からなることを特徴とする防水シート。 ２ 架橋化耐候性ゴムが架橋化ブチルゴムおよび
架橋化エチレン−プロピレン−不飽和成分共重合
体ゴムから選ばれた少くとも１つである特許請求
の範囲１記載の防水シート。 ３ 粘着性可塑剤がポリブテン、液状ポリイソブ
チレン、ワセリンおよびパラフインから選ばれた
少くとも１つである特許請求の範囲１記載の防水
シート。 ４ 充填剤がシリカ、カーボンブラツク、クレー
および炭酸カルシウムから選ばれた少くとも１つ
である特許請求の範囲１記載の防水シート。 ５ 充填材がシリカである特許請求の範囲１記載
の防水シート。 ６ シリカの配合量がゴム100重量部に対し10〜
60重量部である特許請求の範囲５記載の防水シー
ト。 ７ シリカの配合量がゴム100重量部に対し20〜
50重量部である特許請求の範囲５記載の防水シー
ト。 ８ 充填剤が炭酸カルシウムである特許請求の範
囲１記載の防水シート。 ９ 炭酸カルシウムの配合量がゴム100重量部に
対し10〜500重量部である特許請求の範囲８記載
の防水シート。[Scope of Claims] 1. A waterproof sheet comprising a vulcanized rubber, unvulcanized rubber or resin sheet with an adhesive layer on one side, wherein the adhesive layer (a) contains at least 50% by weight of crosslinked weather-resistant rubber; 1. A waterproof sheet comprising: (b) 100 parts by weight of rubber; (b) 200 to 1000 parts by weight of an adhesive plasticizer; and (c) 10 parts by weight or more of a filler. 2. The waterproof sheet according to claim 1, wherein the crosslinked weather-resistant rubber is at least one selected from crosslinked butyl rubber and crosslinked ethylene-propylene-unsaturated component copolymer rubber. 3. The waterproof sheet according to claim 1, wherein the adhesive plasticizer is at least one selected from polybutene, liquid polyisobutylene, petrolatum, and paraffin. 4. The waterproof sheet according to claim 1, wherein the filler is at least one selected from silica, carbon black, clay, and calcium carbonate. 5. The waterproof sheet according to claim 1, wherein the filler is silica. 6 The blending amount of silica is 10 to 100 parts by weight of rubber.
60 parts by weight of the waterproof sheet according to claim 5. 7 The blending amount of silica is 20 to 100 parts by weight of rubber.
The waterproof sheet according to claim 5, which contains 50 parts by weight. 8. The waterproof sheet according to claim 1, wherein the filler is calcium carbonate. 9. The waterproof sheet according to claim 8, wherein the amount of calcium carbonate is 10 to 500 parts by weight per 100 parts by weight of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3464279A JPS55126437A (en) | 1979-03-24 | 1979-03-24 | Waterproof sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3464279A JPS55126437A (en) | 1979-03-24 | 1979-03-24 | Waterproof sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55126437A JPS55126437A (en) | 1980-09-30 |
| JPS6241109B2 true JPS6241109B2 (en) | 1987-09-01 |
Family
ID=12420077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3464279A Granted JPS55126437A (en) | 1979-03-24 | 1979-03-24 | Waterproof sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55126437A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59136246A (en) * | 1983-01-26 | 1984-08-04 | 日東電工株式会社 | Waterproof sheet with adhesive layer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4999578A (en) * | 1972-12-26 | 1974-09-20 |
-
1979
- 1979-03-24 JP JP3464279A patent/JPS55126437A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4999578A (en) * | 1972-12-26 | 1974-09-20 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55126437A (en) | 1980-09-30 |
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