LIGHT OR HEAT TRIGGERED FRONTALLY CURED CURE-ON-DEMAND ADHESIVES KIT

    公开(公告)号:US20230129505A1

    公开(公告)日:2023-04-27

    申请号:US17968824

    申请日:2022-10-19

    Abstract: A cure-on-demand adhesive kit capable of self-sustaining frontal polymerization after a heat or actinic radiation trigger for bonding two substrates is provided. The kit includes a first monomer/oligomer component and a UV or thermal cure catalyst component. In practical application, the first monomer/oligomer component and the UV or thermal cure catalyst component are mixed together to form a ready-to-use prepolymer mixture. The prepolymer mixture is applied onto the surface of a first substrate, and the first substrate is contacted with a second substrate by the mixture applied side. After giving a heat or actinic radiation trigger, a self-sustaining frontal polymerization of the mixture will be started for curing the mixture between two substrates as an adhesive to adhere the two substrates.

    MULTI-COMPONENT SHAPE MEMORY THREADS, FIBERS, TUBES, TAPES AND METHOD FOR PRODUCING THE SAME

    公开(公告)号:US20210404093A1

    公开(公告)日:2021-12-30

    申请号:US17344929

    申请日:2021-06-10

    Abstract: The invention relates to multi-component shape memory threads, fibers, tubes, or tapes, which includes at least two shape-memory polymeric (SMP-N) components. Each of the at least two SMP-N components is of at least 1% of the total weight, and N is a positive integer starting from 1, and the SMP-N components have a selectively engineered shape recovery temperature (Tr) between approximately 0° C. to 130° C. Also, when TrN and TrN+1 are higher than room temperature, the threads, fibers, tubes, or tapes are configured to assume a substantially helical configuration upon heating to above TrN and lower than TrN+1 by a stimulus when an elongation of the threads, fibers, tubes, or tapes is approximately 30% to approximately 300%, and having a coil diameter from 0.5 to 10 mm and a number of the turns per cm from 5 to 30.

    Transparent EMI shielding film and production method for the same

    公开(公告)号:US20220394892A1

    公开(公告)日:2022-12-08

    申请号:US17740381

    申请日:2022-05-10

    Abstract: The present invention provides a transparent EMI shielding film that includes a first transparent polymeric substrate layer. A first conductive mesh layer having a first pattern is printed on the first layer, the conductive mesh having a line width from approximately 5 μm to approximately 500 μm and having a space between two adjacent conductive lines of 100 μm to 1000 μm. The conductive mesh blocks electromagnetic signals. A second transparent polymeric layer is positioned over the first transparent polymeric substrate layer having the first conductive mesh layer printed thereon. A second conductive mesh layer having a second pattern is printed on the second transparent polymeric layer, the second pattern being substantially identical to the first pattern, and being substantially identically positioned above the first pattern in order to maximize transparent spaces between adjacent conductive lines. The transparency is approximately 80% or greater in a visible light spectral region.

    ENERGY ABSORBING FOAM MATERIAL AND METHOD OF USING THEREOF

    公开(公告)号:US20220098382A1

    公开(公告)日:2022-03-31

    申请号:US17460330

    申请日:2021-08-30

    Abstract: The present invention provides an energy absorbing foam material includes at least one shape memory polymer foam having a non-impact resistant configuration in a first force-application time, an impact resistant configuration in a second force-application time at a working temperature, a first glass transition temperature equal to or lower than a working temperature in the first force-application time, and a second glass transition temperature higher than a working temperature in the second force-application time. A second elastic modulus of the shape memory polymer foam in the second force-application time is at least 10 times than a first elastic modulus of the shape memory polymer form in the first force-application time at the working temperature.

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