Abstract: Systems for positioning and bonding a nutplate to a substrate having an aperture include a nutplate engagement fixture and a temperature sensor retention fixture. The nutplate engagement fixture includes a rigid tube and an elastomeric tube engaged with the rigid tube, the elastomeric tube having an elongated tube sized to provide a friction fit with the aperture and retain the elastomeric tube within the aperture. The rigid tube is operable to engage the nutplate at one end and the elastomeric tube is configured to anchor the nutplate engagement fixture at the aperture and secure the nutplate in contact with the substrate. The temperature sensor retention fixture includes a fixture body sized and configured to engage with the nutplate and at least one passageway within the fixture body sized and configured to allow a temperature sensor to be inserted or embedded therein with an end proximal a surface of the nutplate.

Abstract: Systems for positioning and bonding a nutplate to a substrate having an aperture include a nutplate engagement fixture and a temperature sensor retention fixture. The nutplate engagement fixture includes a rigid tube and an elastomeric tube engaged with the rigid tube, the elastomeric tube having an elongated tube sized to provide a friction fit with the aperture and retain the elastomeric tube within the aperture. The rigid tube is operable to engage the nutplate at one end and the elastomeric tube is configured to anchor the nutplate engagement fixture at the aperture and secure the nutplate in contact with the substrate. The temperature sensor retention fixture includes a fixture body sized and configured to engage with the nutplate and at least one passageway within the fixture body sized and configured to allow a temperature sensor to be inserted or embedded therein with an end proximal a surface of the nutplate.

Abstract: Embodiments of systems and methods for positioning and bonding a nutplate to a substrate comprising at least one aperture, wherein the system includes a nutplate engagement fixture formed from a rigid tube and an elastomeric tube, a heater operable to deliver heat to a bonding surface of the nutplate, at least one temperature sensor operable to measure the temperature of the bonding surface of the nutplate, a temperature sensor retention fixture operable to position and secure the at least one temperature sensor to the nutplate, and a heater controller operable to control the output from the heater.

Abstract: Systems for positioning and bonding a nutplate to a substrate having an aperture include a nutplate engagement fixture and a temperature sensor retention fixture. The nutplate engagement fixture includes a rigid tube and an elastomeric tube engaged with the rigid tube, the elastomeric tube having an elongated tube sized to provide a friction fit with the aperture and retain the elastomeric tube within the aperture. The rigid tube is operable to engage the nutplate at one end and the elastomeric tube is configured to anchor the nutplate engagement fixture at the aperture and secure the nutplate in contact with the substrate. The temperature sensor retention fixture includes a fixture body sized and configured to engage with the nutplate and at least one passageway within the fixture body sized and configured to allow a temperature sensor to be inserted or embedded therein with an end proximal a surface of the nutplate.

Abstract: The present discovery uses monomers which contain reversible photo-crosslinkable groups in addition to primary polymerizable groups. The mechanical properties of these materials and the reversibility of the photo-activated shape memory effect demonstrate the effectiveness of using photo-irradiation to effect change in modulus and shape memory effect. In the preferred embodiment the reaction mixture includes a photo-reactive monomer comprising a photo reactive group and a polymerizable group; a second monomer, which is more preferably a mixture of monomers, which are acrylate based; a multi-functional crosslinking agent, preferably 1,6 hexanediol diacrylate (HDODA); an initiator, preferably a free radical initiator; and a fifth, optional, component which is a modifying polymer. The mixture of the second monomer, crosslinking agent, and initiator comprise the base polymer matrix into which the photo-reactive monomer is incorporated.

Abstract: The present discovery shows how to make a self-crosslinking SMP. Shape Memory Polymer (SMP) can be formulated as a castable coating. This process allows the polymer to dissolve in solvent, and as the solvent evaporates the polymers self-crosslink at room temperature in air, creating a copolymer coating wherein the copolymer coating is an SMP. This technology has coating applications where shape memory would be an asset: from shape memory textile and fabric to self-healing coatings for vehicles and morphing skins for aircraft.

Abstract: A method of repairing a composite component having a damaged area including: laying a composite patch over the damaged area; activating the shape memory polymer resin to easily and quickly mold said patch to said damaged area; deactivating said shape memory polymer so that said composite patch retains the molded shape; and bonding said composite patch to said damaged part.

Abstract: The shape memory polymers disclosed are a reaction product of at least one reagent containing two active amino-hydrogen or two active phenolic-hydrogen with at least one multifunctional cross linking reagent which contains at least three or more active amino- or phenolic-hydrogen or is a reagent containing at least three glycidyl ether moieties which is then further mixed with at least one diglycidyl ether reagent whereupon the resulting mixture is cured and has a glass transition temperature higher than 00 C. This reaction creates crosslinking between the monomers and polymers such that during polymerization they form a crosslinked thermoset network.

Abstract: The present discovery shows how to make a self-crosslinking SMP. Shape Memory Polymer (SMP) can be formulated as a castable coating. This process allows the polymer to dissolve in solvent, and as the solvent evaporates the polymers self-crosslink at room temperature in air, creating a copolymer coating wherein the copolymer coating is an SMP. This technology has coating applications where shape memory would be an asset: from shape memory textile and fabric to self-healing coatings for vehicles and morphing skins for aircraft.

Abstract: Cyanate ester shape memory polymers (SMP). The polymers are preferably formed via reaction of a multifunctional cyanate ester and a mono functional cyanate ester and exist, in one inventive aspect, in the form of a cross-linked thermoset network. Optional catalysts and structural modifiers may be added to the reaction moieties to help control the glass transition temperature of the resulting SMP to greater than 0° C., preferably from about 150° C.-300° C.

Abstract: The currently disclosed device is a novel poly(azidoaminoether)-based energetic polymer utilizing a chemical design that possesses great versatility in tailoring properties such as endothermicity, oxygen balance, flexibility, toughness, and crystallinity. Furthermore, this new chemical design will also be compatible with current polyisocyanate curing chemistry. These attributes will give such novel polymers great potential in meeting the demands of a highly energetic, yet insensitive propellant binder. This material's tailorable mechanical properties and oxygen balance as well as its backwards compatibility with current diisocyanate crosslinking methods make this novel polymer an ideal energetic binder material for use in a variety of munition systems.

Abstract: A method of repairing a composite component having a damaged area including: laying a composite patch over the damaged area; activating the shape memory polymer resin to easily and quickly mold said patch to said damaged area; deactivating said shape memory polymer so that said composite patch retains the molded shape; and bonding said composite patch to said damaged part.

Abstract: A method of repairing a composite component having a damaged area including: laying a composite patch over the damaged area; activating the shape memory polymer resin to easily and quickly mold said patch to said damaged area; deactivating said shape memory polymer so that said composite patch retains the molded shape; and bonding said composite patch to said damaged part.

Abstract: New polyaspartimide compositions and methods of forming and using those compositions arc provided. The compositions are formed by reacting a bismaleimide and diamine in a solvent-free environment. The resulting polyaspartimide comprising recurring monomers of The compositions have properties desirable for use as shape memory polymers as well as in composite products that are useful for building components present in airplanes.

Abstract: The shape memory polymers disclosed are a reaction product of at least one reagent containing two active amino-hydrogen or two active phenolic-hydrogen with at least one multifunctional cross linking reagent which contains at least three or more active amino- or phenolic-hydrogen or is a reagent containing at least three glycidyl ether moieties which is then further mixed with at least one diglycidyl ether reagent whereupon the resulting mixture is cured and has a glass transition temperature higher than 00C. This reaction creates crosslinking between the monomers and polymers such that during polymerization they form a crosslinked thermoset network.

Abstract: Shape memory polymers prepared by copolymerizing two monomers, which each separately produce polymers characterized by different glass transition temperatures in the presence of a multi-functional monomer whereby the copolymer formed is cross-linked during the polymerization to form a thermoset network. The transition temperature of the final polymers is adjusted by the ratio of the monomers selected, to from about 150° C. to about 270° C., while the degree of crosslinking controls the rubbery modulus plateau. The shape memory polymers can be processed as castable formulations in the form of bulk articles, coatings and films. The invention also relates to the articles of manufacture thereof and methods of the preparation and use thereof.

Abstract: A shape memory polymer which is a reaction product of styrene, a vinyl compound, a multifunctional crosslinking agent and an initiator. The shape memory polymer has particular application as a contact lens mold.

Abstract: A shape memory polymer which is a reaction product of styrene, a vinyl compound, a multifunctional crosslinking agent and an initiator. The shape memory polymer has particular application as a contact lens mold.