The invention belongs to a material modification technology, and relates to an elastomer, in particular to a low-density modified elastomer material as well as a preparation method and application thereof. The technical difficulty in the prior art is that a core-shell polymer foaming agent is uniformly added into dense modified rubber, so that the dense modified rubber expands when heated to reduce the particle density to obtain a foamed elastomer, although the density is reduced, the cross section is gradually enlarged in the production process when the foaming elastomer is applied to a production end, and the density of a finished product is increased and even reaches 0.81. The characteristics of a sectional control process are mainly utilized, after dynamic vulcanization of the modified rubber, the polymer microspheres are uniformly distributed in the modified rubber, and in the extrusion molding process of an application end, the prepared product achieves the appearance shape of the sealing strip of the automobile part, and has the same physical properties as dense modified rubber and the effect of light weight at the same time.

    本发明属于材料改性技术,涉及一种弹性体,具体为一种低密度改性弹性体材料及其制备方法与应用。现有技术难点是将一种核壳聚合物发泡剂均匀添加至密实改性橡胶中,使其受热膨胀降低粒子密度得到发泡弹性体,虽然降低了密度,但是在生产端应用时,生产过程中断面放大时大时小,且成品密度提高甚至达到0.81。本发明主要运用分段式控制工艺的特点,改性橡胶的动态硫化后,聚合物微球均匀分布在改性橡胶内,制备的产品在应用端挤出成型过程中,达到汽车零部件密封条外观形状的同时,拥有与密实改性橡胶同样的物理性能且轻量化的效果。


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    Title :

    Low-density modified elastomer material as well as preparation method and application thereof


    Additional title:

    一种低密度改性弹性体材料及其制备方法与应用


    Contributors:
    XU TAO (author) / ZHOU LENING (author) / HARA RYO (author) / NIU ZHUOHUA (author)

    Publication date :

    2025-02-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    C08J Verarbeitung , WORKING-UP / B60J WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES , Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen



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