SACRIFICIAL DEFLAGRATION MATERIALS, COMPONENTS, AND METHODS OF USE THEREOF

    公开(公告)号:US20210162672A1

    公开(公告)日:2021-06-03

    申请号:US16701528

    申请日:2019-12-03

    Abstract: Methods for forming channels within a substrate include molding a sacrificial component directly into the substrate and igniting the sacrificial component to deflagrate of the sacrificial component and form a channel in the substrate. The sacrificial component can include oxidizing agents such as chlorates, perchlorates, nitrates, dichromates, nitramides, and/or sulfates imbedded in a polymeric matrix, and the oxidizing agents can be 30 wt. % to 80 wt. % of the sacrificial component. The sacrificial component can further include one or more of unoxidized metal powder fuels, flammable gas-filled polymeric bubbles, one or more metallocenes and/or one or more metal oxide particles, one or more polymers with nitroester, nitro, azido, and/or nitramine functional groups, one or more burn rate suppressants such as oxamide, ammonium sulphate, calcium carbonate, calcium phosphate, and ammonium chloride, and non-combustible hollow bubbles and/or inert particles. The polymeric matrix can have a limiting oxygen index of less than about 30.

    VASCULAR CHANNEL MANUFACTURE BY DEFLAGRATION
    66.
    发明申请

    公开(公告)号:US20190168473A1

    公开(公告)日:2019-06-06

    申请号:US15829051

    申请日:2017-12-01

    Abstract: A method of forming channels within a substrate includes: (a) molding a sacrificial component directly into the substrate; (b) igniting the sacrificial component to cause a deflagration of the sacrificial component, thereby forming a channel in the substrate; and (c) cleaning the channel in the substrate to remove byproducts of the deflagration of the sacrificial component. The sacrificial component includes a combustible material with a protective shell, and the substrate includes a polymeric material.

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