The invention relates to a structure/stealth integrated composite material and a preparation method thereof. The structure/stealth integrated composite material comprises at least two resin-based composite material layers; at least one frequency selective surface layer clamped between the at least two resin-based composite material layers, the resin-based composite material layers and the frequency selective surface layers being alternately arranged; and a bottommost metal reflective layer. The relative dielectric constant of a resin-based composite material forming the resin-based composite material layers in the frequency band of 2-20 GHz is 2-5. The frequency selective surface layer is provided with conductive patterns which are periodically arranged in a two-dimensional mode, and the size of the adjacent conductive patterns and the distance between the geometric centers of the conductive patterns are between 1/20 and 1/5 of the wavelength corresponding to the lowest limit of the wave-absorbing working frequency band of the structure/stealth integrated composite material. The tensile strength of the structure/stealth integrated composite material is not less than 200MPa.
本发明涉及一种结构/隐身一体化复合材料及其制备方法,该结构/隐身一体化复合材料包括:至少两层树脂基复合材料层;夹于至少两层所述树脂基复合材料层间的至少一层频率选择表面层,所述树脂基复合材料层与所述频率选择表面层交替排列;以及最底层金属反射层,构成所述树脂基复合材料层的树脂基复合材料在2~20 GHz频段内的相对介电常数为2~5,所述频率选择表面层具有二维周期性排列的导电图案,相邻的所述导电图案的尺寸及其几何中心间的间距在所述结构/隐身一体化复合材料的吸波工作频段最低限对应波长的1/20至1/5之间,所述结构/隐身一体化复合材料的抗拉强度不小于200MPa。
Structure/stealth integrated composite material and preparation method thereof
一种结构/隐身一体化复合材料及其制备方法
2021-05-25
Patent
Electronic Resource
Chinese
IPC: | B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / B64C AEROPLANES , Flugzeuge |
Heat protection/heat insulation/stealth/bearing integrated structure and preparation method thereof
European Patent Office | 2024
|ANTI-ICING MATERIAL WITH STEALTH FUNCTION, PREPARATION METHOD AND USE THEREOF
European Patent Office | 2023
|Scarf patch repair method for stealth composite structure
European Patent Office | 2024
|