A multiple chamber pneumatic tire having an upper section and a lower section. A diaphragm separates the upper section from the lower section. The lower section has at least two chambers. The chambers each have a chamber valve, a nail guard layer, a plurality of fibers having an end connected to an inner wall surface of a chamber, and an interconnected barrier connected to at least two portions of a chamber wall surface. The upper section of the tire has at least one linkage located within at least one tube with a primary end connected to a chamber valve of a chamber and a secondary end connected to a tire rim or to a main valve. A tire pressure monitoring system can be in communication with a chamber valve. The tire can have a ring with at least one retractable stud.

A multiple chamber pneumatic tire having an upper section and a lower section. A diaphragm separates the upper section from the lower section. The lower section has at least two chambers. The chambers each have a chamber valve, a nail guard layer, a plurality of fibers having an end connected to an inner wall surface of a chamber, and an interconnected barrier connected to at least two portions of a chamber wall surface. The upper section of the tire has at least one linkage located within at least one tube with a primary end connected to a chamber valve of a chamber and a secondary end connected to a tire rim or to a main valve. A tire pressure monitoring system can be in communication with a chamber valve. The tire can have a ring with at least one retractable stud.

The present invention provides a self-repairing material having self-repairing properties and shape memory properties, as well as high dynamic strength, and also provides a method for manufacturing the same. The self-repairing material of the present invention comprises a polymer comprising specific monomer units in specific ratios, and the concentration of the monomer units is within a specific range.

The present invention provides a self-repairing material having self-repairing properties and shape memory properties, as well as high dynamic strength, and also provides a method for manufacturing the same. The self-repairing material of the present invention comprises a polymer comprising specific monomer units in specific ratios, and the concentration of the monomer units is within a specific range.

A composition comprising thermoset polymer, shape memory polymer to facilitate macro scale damage closure, and a means for molecular scale healing is disclosed; the composition has the ability to resolve structural defects by a bio-mimetic close-then heal process. In use, the shape memory polymer serves to bring surfaces of a structural defect into approximation, whereafter use of the means for molecular scale healing allowed for movement of the healing means into the defect and thus obtain molecular scale healing. The means for molecular scale healing can be a thermoplastic such as fibers, particles or spheres which are used by heating to a level at or above the thermoplastic's melting point, then cooling of the composition below the melting temperature of the thermoplastic. Compositions of the invention have the ability to not only close macroscopic defects, but also to do so repeatedly even if another wound/damage occurs in a previously healed/repaired area.

A composition comprising thermoset polymer, shape memory polymer to facilitate macro scale damage closure, and a means for molecular scale healing is disclosed; the composition has the ability to resolve structural defects by a bio-mimetic close-then heal process. In use, the shape memory polymer serves to bring surfaces of a structural defect into approximation, whereafter use of the means for molecular scale healing allowed for movement of the healing means into the defect and thus obtain molecular scale healing. The means for molecular scale healing can be a thermoplastic such as fibers, particles or spheres which are used by heating to a level at or above the thermoplastic's melting point, then cooling of the composition below the melting temperature of the thermoplastic. Compositions of the invention have the ability to not only close macroscopic defects, but also to do so repeatedly even if another wound/damage occurs in a previously healed/repaired area.

The present disclosure is directed to stress-responsive compositions comprising (1) at least one (co)polymer comprising at least one mechanophore comprising at least one thiocarbonylthio functional group or derivative thereof and (2) at least one compound comprising at least one functional group capable of reacting with a free radical, The present disclosure is also directed to articles, coatings, and 3D printing binders comprising such stress-responsive compositions, as well as to processes of imparting the abilities of forming and maintaining protective barriers and mechanical self-healing to such articles, coatings, and 3D printing binders by incorporating such stress-responsive compositions therein.

The present disclosure is directed to stress-responsive compositions comprising (1) at least one (co)polymer comprising at least one mechanophore comprising at least one thiocarbonylthio functional group or derivative thereof and (2) at least one compound comprising at least one functional group capable of reacting with a free radical, The present disclosure is also directed to articles, coatings, and 3D printing binders comprising such stress-responsive compositions, as well as to processes of imparting the abilities of forming and maintaining protective barriers and mechanical self-healing to such articles, coatings, and 3D printing binders by incorporating such stress-responsive compositions therein.

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.

The present invention provides application of a self-healing material in 3D printing. In the present invention, a self-healing material is taken as a 3D printing material, and the material is intelligently detected and spontaneously healed by utilizing a self-healing function of the self-healing material, so that a potential damage to the self-healing material caused by generated micro-cracks can be prevented. Compared with molding conditions of a product, gentle and mild conditions are required for self-healing, and the overall performance of the product cannot be affected from beginning to end of a self-healing process, thereby reducing the maintenance cost of the product, prolonging the service life of the product, and increasing the utilization rate of resources.