Polymer composition and process for coating expanded polystyrene with the polymer composition

    公开(公告)号:US12122891B2

    公开(公告)日:2024-10-22

    申请号:US17775247

    申请日:2020-11-04

    摘要: A polymer composition for coating expanded polystyrene (EPS) is provided, the polymer composition includes a mixture of at least one of polyurea, polyurethane, silicon elastomer, and combination thereof in a predefined ratio. The polymer composition imparts desired properties such as high impact and abrasion resistance, elongation strength, and anti-static property along with flexural strength to the EPS. The present invention also provides the process for coating the polymer composition onto the EPS. The matrix coating process provides much stronger bonding due to overlap of coating of the polymer composition on the sides of the EPS and reduces the wastage of the polymer composition during the coating of the EPS. The present invention also provides the EPS coated with the polymer composition. The EPS coated with the polymer composition possesses the properties such as high impact resistance, abrasion resistance, elongation strength, flexural strength, and anti-static property.

    SELF-REPAIR COMPOSITE MATERIAL AND SENSING PLATFORM UNIT

    公开(公告)号:US20240043641A1

    公开(公告)日:2024-02-08

    申请号:US18265705

    申请日:2021-12-15

    IPC分类号: C08J7/044 G01N27/12 C08K3/04

    摘要: The present invention provides a composite material and a sensing platform unit comprising a self-healing polymer matrix and at least two conductive nanomaterials embedded therein. The polymer matrix has a multi-layer structure comprising a first layer comprising a network of a first nanomaterial, which resistance changes in response to a mechanical damage inflicted on the polymer matrix; and a second layer comprising a network of a second nanomaterial, configured to generate heat under applied voltage. The network of the first nanomaterial and the network of the second nanomaterial are electrically connected to a mutual control circuit which is configured to apply voltage to the second nanomaterial upon a change in resistance of the first nanomaterial. The sensing platform unit further comprises a third layer comprising a network of a third nanomaterial configured to detect at least one of pressure, strain, temperature, pH, humidity, and volatile organic compounds (VOCs).