Disclosed herein is an intrinsically self-healing composite based upon in situ thermal remendability of an embedded polymeric interphase. The fiber-reinforced composite (FRC) material may incorporate a thermoset polymer with a defined glass transition temperature (T.sub.g) and/or a thermoplastic material of amorphous or semi-crystalline nature. The polymeric interphase can be incorporated as a plurality of particles, fibers, meshes, films, or 3D-printed structures. The self-healing composite includes a resistive heating component as a structural element that minimizes electrical energy demand and impact on mechanical integrity. Healing occurs in situ via resistive heating and can be enabled below, at, or above the glass-transition temperature of the FRC matrix, demonstrating viability for in-service repair under sustained loads. In addition to providing rapid healing functionality, the polymeric interphase increases inherent resistance to interlaminar fracture. Repeated heal cycles have been achieved in a double cantilever beam (DCB) fracture test without significant degradation in performance.

Various embodiments are directed to apparatuses and methods involving an elastomer material comprising a flexible polymer backbone with a particular ratio of at least first moieties and second moieties. The first moieties provide a first number of dynamic bonds resulting from interactions between the first moieties and the second moieties provide a second number of dynamic bonds resulting from interactions between the second moieties, the second number of dynamic bonds having a weaker bonding strength than the first number of dynamic bonds. The elastomer material, based on the ratio of the first moieties and second moieties, exhibits autonomous self-healing, a particular toughness, and is stretchable.

A structural shape memory assisted self-healing polymer formed by laminating thin layers of an ionomer, such as a member of the poly(styrene sulfonate) (PSS) family of ionomers, with a WEGP-type SMP, such as atactic poly(styrene) (PS) with molecular weight in the 200 kDa range (or alternatively poly(methyl methacrylate) (PMMA)) in combination with polycyclooctene (PCO). The self-healing polymer may also comprise an interpenetrating, immiscible polymer network (IPN) based on a blend of polystyrene and polystyrene sulfonate (PSS).

A self-healing glass panel includes first and second glass layers, a reservoir between the first and second glass layers, and a liquid healing agent for healing the first or second glass layers if a crack occurs. The liquid healing agent is entrapped in the reservoir by at least one of the first or second glass layers.

One variation of tactile interface includes: a flexible substrate configured to deform to a first offset in response to application of a deflecting force on the flexible substrate; a tactile layer defining a tactile surface and configured to deform to a second offset in response to application of the deflecting force on the tactile surface; and a tie layer configured to retain the tactile layer against the substrate, the tie layer defining a first surface contacting the flexible substrate and a second surface contacting the tactile layer, the first surface of the tie layer configured to stretch by the first offset to maintain contact with the substrate and the second surface of the tie layer configured to stretch by the second offset to maintain contact with the tactile layer.

A pen input device sheet, which contacts a tip part of a core body of an electronic pen for a pen input device, includes a resin film layer. A diameter of the tip part is SR. An amount of sinking of the resin film layer is and a coefficient of kinetic friction between the resin film layer and the tip part is , which change according to a load when the tip part is in contact with the pen input device sheet. When the load applied to the tip part of the core body is changed and corresponding measurements are taken, and the measurements plotted with allocated to an ordinate axis and a ratio of /SR is allocated to an abscissa axis, a fitted straight line plotted based on the measurements has a proportional relation corresponding to a proportional relation between and the ratio of /SR.

The present invention addresses the problem of providing a surface protection film which is resistant to discoloration, expansion, etc. due to the penetration of oils or plasticizers. To solve the problem, a surface protection film having a protective layer made of polyester-based polyurethane on the outermost surface thereof is provided.

A self-healing vacuum insulation panel and a method of manufacture are provided. The vacuum insulation panel includes a self-healing, multi-layer barrier film including a separator between a curing agent and a curable resin. Upon damage to the separator, the curing agent penetrates the separator due to a pressure differential across the barrier film and reacts with the curable resin to seal any cuts or punctures. The curing agent and the curable resin can be selected to have long term stability and a short reaction time with no need for external stimuli. As a result, the multi-layer barrier film can retain the internal vacuum and maintain a desirably low thermal conductivity using low-cost, commercially available epoxies and curing agents.

Provided are cementitious panel that include a swellable material within a core layer, a dense layer, and/or a sheet of facing material that make up a cementitious panel, as well as methods of manufacturing such cementitious panels that include a swellable material and methods of providing a moisture or water barrier in a cementitious panel.

A display device and a manufacturing method of the same are provided. The display device includes a display panel and a polarizer disposed on the display panel. The display panel includes a first substrate, a second substrate, a display medium, and a self-healing layer including a self-healing polymer material. The display medium is disposed between the first substrate and the second substrate. The self-healing layer is formed on at least a surface of the first substrate or the second substrate.