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    • 5. 发明申请
    • Honeycomb Core Having a High Compression Strength and Articles Made from the Same
    • 具有高抗压强度的蜂窝芯和由其制成的制品
    • US20110244175A1
    • 2011-10-06
    • US12894497
    • 2010-09-30
    • Rainer KehrleYves KlettMikhail R. LevitOlivier Lengwiler
    • Rainer KehrleYves KlettMikhail R. LevitOlivier Lengwiler
    • B32B3/12
    • D21H13/26D21H27/30Y10T428/24149
    • This invention is directed to a honeycomb core structure having a high compression modulus. The core structure comprises (a) a plurality of interconnected walls having surfaces which define a plurality of honeycomb cells, wherein the cell walls are formed from a nonwoven sheet and (b) a cured resin in an amount such that the weight of cured resin as a percentage of combined weight of cured resin and nonwoven sheet is at least 62 percent. The nonwoven sheet further comprises fibers having a modulus of at least 200 grams per denier (180 grams per dtex) and a tenacity of at least 10 grams per denier (9 grams per dtex) wherein, prior to impregnating with the resin, the nonwoven sheet has an apparent density calculated from the equation Dp=K×((dr×(100−%r)/%r)/(1+dr/ds×(100−%r)/%r), where Dp is the apparent density of the sheet before impregnation, dr is the density of cured resin, ds is the density of solid material in the sheet before impregnation, % r is the cured resin content in the final core structure in weight %, K is a number with a value from 1.0 to 1.35. Further, the Gurley porosity of the nonwoven sheet before impregnation with the resin is no greater than 30 seconds per 100 milliliters. The invention is also directed to composite structures incorporating such folded core.
    • 本发明涉及一种具有高压缩模量的蜂窝芯结构。 核心结构包括(a)具有限定多个蜂窝单元的表面的多个互连壁,其中,细胞壁由非织造片形成,(b)固化树脂,其量使得固化树脂的重量为 固化树脂和非织造纸的组合重量的百分比至少为62%。 非织造片材还包括具有至少200克/旦尼尔(180克/分特)的模量和至少10克/旦尼尔(9克/分特)的强度的纤维,其中在用树脂浸渍之前,将非织造纸 具有从公式Dp = K×((dr×(100-%r)/%r)/(1 + dr / ds×(100-%r)/%r))计算出的表观密度,其中Dp是表观密度 浸渍前的片材密度,dr是固化树脂的密度,ds是浸渍前的片材中固体材料的密度,%r是最终芯结构中固化树脂含量的重量%,K是具有 此外,用树脂浸渍之前的非织造纸片的Gurley孔隙率不超过每100毫升30秒。本发明还涉及包含这种折叠芯的复合结构。