A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
WATERPROOF SHEET AND WATERPROOF CONSTRUCTION METHOD
SOLUTION: A waterproof sheet comprises an adhesive layer stacked on a base material layer. The adhesive layer comprises: (A) an organopolysiloxane containing two or more alkenyl groups; (B) a resinous copolymer comprising mainly of RSiOunits and SiOunits; (C) an organohydrogenpolysiloxane containing two or more SiH groups; and (D) a cured product of addition reaction-curable silicone composition containing addition reaction catalyst. The hardness after curing is 3 to 20 measured by a CSR-2 type hardness tester. The base material layer is made of a cured product of an elastomer composition which does not contain silicone as a main component polymer and contains the above-mentioned components (C) and (D).EFFECT: A waterproof sheet is laid for water intrusion in a boundary part between a bottom side of an outdoor tank and a foundation part, with stable adhesion characteristics maintained over a long period of time, as well as characteristics that can withstand impact of falling objects and the like, so that rainwater intrusion thereinto due to damage, would hardly occur to inhibit deterioration of the layered structure, thereby enabling long-term use.SELECTED DRAWING: Figure 1
【解決手段】基材層に粘着層を積層した防水シートであり、粘着層が、（Ａ）２個以上のアルケニル基を含有するオルガノポリシロキサン、（Ｂ）Ｒ23ＳｉＯ1/2単位とＳｉＯ2単位とを主成分とする樹脂質共重合体、（Ｃ）２個以上のＳｉＨ基を含有するオルガノハイドロジェンポリシロキサン、（Ｄ）付加反応触媒を含有する付加反応硬化型シリコーン組成物の硬化物からなり、硬化後の硬さがＣＳＲ−２型硬度計で３〜２０であり、基材層が、主成分のポリマーにシリコーンを含まず、かつ上記（Ｃ）成分及び（Ｄ）成分を含有するエラストマー組成物の硬化物からなる防水シート。【効果】屋外タンクの底部側と土台部分との境界部分に雨水の浸入を目的として敷設され、長期に亘り安定した貼着特性を保持すると共に、落下物の衝撃等に耐え得る特性を有するため、破損による雨水の浸入も起こり難く、敷設された構造物の劣化が抑制されることで、長期使用が可能となる。【選択図】図１
WATERPROOF SHEET AND WATERPROOF CONSTRUCTION METHOD
SOLUTION: A waterproof sheet comprises an adhesive layer stacked on a base material layer. The adhesive layer comprises: (A) an organopolysiloxane containing two or more alkenyl groups; (B) a resinous copolymer comprising mainly of RSiOunits and SiOunits; (C) an organohydrogenpolysiloxane containing two or more SiH groups; and (D) a cured product of addition reaction-curable silicone composition containing addition reaction catalyst. The hardness after curing is 3 to 20 measured by a CSR-2 type hardness tester. The base material layer is made of a cured product of an elastomer composition which does not contain silicone as a main component polymer and contains the above-mentioned components (C) and (D).EFFECT: A waterproof sheet is laid for water intrusion in a boundary part between a bottom side of an outdoor tank and a foundation part, with stable adhesion characteristics maintained over a long period of time, as well as characteristics that can withstand impact of falling objects and the like, so that rainwater intrusion thereinto due to damage, would hardly occur to inhibit deterioration of the layered structure, thereby enabling long-term use.SELECTED DRAWING: Figure 1
【解決手段】基材層に粘着層を積層した防水シートであり、粘着層が、（Ａ）２個以上のアルケニル基を含有するオルガノポリシロキサン、（Ｂ）Ｒ23ＳｉＯ1/2単位とＳｉＯ2単位とを主成分とする樹脂質共重合体、（Ｃ）２個以上のＳｉＨ基を含有するオルガノハイドロジェンポリシロキサン、（Ｄ）付加反応触媒を含有する付加反応硬化型シリコーン組成物の硬化物からなり、硬化後の硬さがＣＳＲ−２型硬度計で３〜２０であり、基材層が、主成分のポリマーにシリコーンを含まず、かつ上記（Ｃ）成分及び（Ｄ）成分を含有するエラストマー組成物の硬化物からなる防水シート。【効果】屋外タンクの底部側と土台部分との境界部分に雨水の浸入を目的として敷設され、長期に亘り安定した貼着特性を保持すると共に、落下物の衝撃等に耐え得る特性を有するため、破損による雨水の浸入も起こり難く、敷設された構造物の劣化が抑制されることで、長期使用が可能となる。【選択図】図１
WATERPROOF SHEET AND WATERPROOF CONSTRUCTION METHOD
防水シート及び防水施工方法
UNO TAKAO (author) / NAKAJIMA TAKESHI (author) / YOSHIDA MASAYUKI (author)
2019-01-10
Patent
Electronic Resource
Japanese
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