The invention discloses a high-strength and high-toughness phthalonitrile-based composite material as well as a preparation method and application thereof. The composite material includes a plurality of matrix layers in a stacked form, and each matrix layer includes a fiber reinforced phthalonitrile resin; and the composite material further comprises at least one interlayer region, each interlayer region is formed between two adjacent matrix layers, each interlayer region contains toughening particles, and the toughening particles are selected from thermoplastic resin particles and/or inorganic particles. Through a method of directionally introducing a toughening particle component into an interlayer region, the excellent heat resistance of the phthalonitrile composite material is maintained to the greatest extent, the fracture toughness of the phthalonitrile composite material is greatly improved, the rapid damage of the interlayer interface area under the load effect is limited, and the original mechanical strength of the composite material is ensured or improved to some extent; and meanwhile, the aims of toughening and strengthening are fulfilled. The composite material can be applied to the field of aerospace high-temperature-resistant structure composite materials.

    本发明公开一种高强高韧邻苯二甲腈基复合材料及其制备方法与应用。复合材料包括呈堆叠形式的多个基体层,每个基体层包括纤维增强的邻苯二甲腈树脂;复合材料还包括至少一个层间区域,每个层间区域均形成于两个邻近的基体层之间,且每个层间区域中均含有增韧颗粒,增韧颗粒选自热塑性树脂颗粒和/或无机颗粒。本发明通过向层间区域定向引入增韧颗粒组分的方法,最大程度保持邻苯二甲腈复合材料优异耐热性的同时,大幅度提高了其断裂韧性,限制了层间界面区域在载荷作用下的快速破坏,并且保证复合材料原有力学强度或有所提高,以同时达到增韧增强的目的。该复合材料可应用于航空航天耐高温结构复合材料领域。


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    Title :

    High-strength and high-toughness phthalonitrile-based composite material as well as preparation method and application thereof


    Additional title:

    一种高强高韧邻苯二甲腈基复合材料及其制备方法与应用


    Contributors:
    SUN JINGSONG (author) / ZHOU HENG (author) / GUO YING (author) / ZHAO TONG (author) / ZHAO ZEHUA (author)

    Publication date :

    2021-08-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    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 / B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B64G Raumfahrt , COSMONAUTICS / C08G MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind



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