LAMINATE

• Main Authors: KOMAZAWA KOZUE, INABA TSUYOSHI, MASUI TOSHIAKI, KUWAJIMA HIROKI, ONO TAKESHI
• Format: Patent
• Language: English; Japanese
• Published: 23.03.2017
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; BLASTING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERAL PROCESSES OF COMPOUNDING; HEATING; JOINTS OR FITTINGS FOR PIPES; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THEIR PREPARATION OR CHEMICAL WORKING-UP; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS; WORKING-UP

PROBLEM TO BE SOLVED: To provide a laminate capable of not only preventing fuel from permeating to the thickness direction of the laminate but also of preventing fuel from permeating to the length direction of the laminate, while excelling in all of a rubber adhesive property, fuel resistance and flexibility.SOLUTION: There is provided a laminate 11 comprising: a layer (A) 11a comprising a cross-linked fluororubber (a) and a fluororesin (a); a layer (B) 11b comprising a rubber (b); a layer (C) 11c comprising a fluororesin (c) having a fuel permeability coefficient of 5.0 g mm/m/day or less; and a layer (D) 11d comprising a rubber (d) (excluding a fluororubber). In the layer (A) 11a of the laminate 11, the cross-linked fluororubber (a) is obtained by dynamically subjecting an uncross-linked fluororubber (a) to cross-linking treatment in the presence of the fluororesin (a) under melting condition of the fluororesin (a).SELECTED DRAWING: Figure 1 【課題】ゴム接着性、耐燃料性、及び、柔軟性のいずれにも優れていると共に、積層体の厚み方向への燃料の透過を抑制できるだけでなく、積層体の長さ方向への燃料の透過をも抑制できる積層体を提供する。【解決手段】架橋フッ素ゴム（ａ）及びフッ素樹脂（ａ）からなる層（Ａ）１１ａ、ゴム（ｂ）からなる層（Ｂ）１１ｂ、燃料透過係数が５．０ｇ・ｍｍ／ｍ２／ｄａｙ以下のフッ素樹脂（ｃ）からなる層（Ｃ）１１ｃ、及び、ゴム（ｄ）（但しフッ素ゴムを除く）からなる層（Ｄ）１１ｄを含む積層体１１。層（Ａ）１１ａにおいて、架橋フッ素ゴム（ａ）が、フッ素樹脂（ａ）の存在下、フッ素樹脂（ａ）の溶融条件下にて、未架橋フッ素ゴム（ａ）を動的に架橋処理して得られた積層体１１。【選択図】図１