Compositions including a polyimide and one or more thermally conductive fillers, and compaction rollers for an automated fiber placement machine incorporating the compositions are provided. The polyimide may be a polymeric reaction product of a dianhydride and one or more diamines. The one or more diamines may include a fluorine-containing alkyl ether diamine. The one or more thermally conductive fillers may include one or more of a carbon-based filler, boron nitride, a metal, or combinations thereof. The compositions may have a thermal conductivity of from about 0.2 to about 50 Watts per meter Kelvin (Wm.sup.−1 K.sup.−1).

One aspect of the present invention is an adhesive film comprising: a first adhesive layer comprising a first adhesive component, a first conductive particle that is a dendritic conductive particle, and a second conductive particle that is a conductive particle other than the first conductive particle, the second conductive particle comprising a nonconductive core body and a conductive layer provided on the core body; and a second adhesive layer comprising a second adhesive component, wherein a volume proportion of the second adhesive component in the second adhesive layer is larger than a volume proportion of the first adhesive component in the first adhesive layer.

Tunable thermoplastic polymer powder feedstock formulations and tunable conductive thermoplastic polymer powder feedstock formulations are disclosed for delivery to a high-velocity sprayer, along with tunable coatings made from the disclosed formulations and methods for coating installed fasteners, and fasteners, fastener/substrate interfaces and substrates coated with the tunable thermoplastic polymer coatings.

Disclosed are examples for printing a one-dimensional (1D) nanomaterial for use in stretchable electronic devices. An ink comprising a nanomaterial solution is dispersed from a pneumatic dispensing system of a printing device. The 1D nanomaterial is printed in a predefined pattern on an underlying substrate positioned on a ground electrode. A voltage is applied between the printing nozzle and the ground electrode to cause the ink to form into a cone during the printing. The substrate can be modified to increase the wettability of the substrate to enhance adhesion of the ink to the substrate.

Anisotropic conductive films, each including an insulating adhesive layer and conductive particles insulating adhesive layer in a lattice-like manner. Among center distances between an arbitrary conductive particle and conductive particles adjacent to the conductive particle, the shortest distance to the conductive particle is a first center distance; the next shortest distance is a second center distance. These center distances are 1.5 to 5 times the conductive particles' diameter. The arbitrary conductive particle, conductive particle spaced apart from the conductive particle by the first center distance, conductive particle spaced apart from the conductive particle by first center distance or second center distance form an acute triangle. Regarding this acute triangle, an acute angle formed between a straight line orthogonal to a first array direction passing through the conductive particles and second array direction passing through conductive particles being 18 to 35°. These anisotropic conductive films have stable connection reliability in COG connection.

The composition described herein for the prevention of corrosion includes sacrificial metal particles more noble than a metal substrate to which the composition contacts, carbonaceous material that can form electrical contact between the sacrificial metal particles, and means for providing an anticorrosion coating material for the metal substrate. The composition can form a coating on a metal substrate surface.

The disclosure provides a composite for forming an insulating substrate. The composite includes 100 parts by weight of a liquid crystal polymer and 0.5-85 parts by weight of a dielectric additive. The liquid crystal polymer has a repeating unit represented by ##STR00001##
in which Ar is 1,4-phenylene, 1,3-phenylene, 2,6-naphthalene, or 4,4′-biphenylene, Y is —O— or —NH—, and X is carboxamido, imido/imino, amidino, aminocarbonylamino, aminothiocarbonyl, aminocarbonyloxy, aminosulfonyl, aminosulfonyloxy, aminosulfonylamino, carboxyl ester, (carboxyl ester)amino, (alkoxycarbonyl)oxy, alkoxycarbonyl, hydroxyamino, alkoxyamino, cyanato, isocyanato, or a combination thereof.

A polyimide composite film having good adhesion to a metal layer without deterioration in mechanical properties.

The present invention provides a bio-electrode composition comprising a polymer compound having a repeating unit A that contains silver salt of fluorosulfonic acid, silver salt of fluorosulfonimide, or silver salt of fluorosulfonamide. This can form a living body contact layer for a bio-electrode with excellent electric conductivity, biocompatibility and light weight, which can be manufactured at low cost and does not cause large lowering of the electric conductivity even when it is wetted with water or dried. The present invention also provides a bio-electrode in which the living body contact layer is formed from the bio-electrode composition and a method for manufacturing the bio-electrode.

A composite material includes a polymer matrix and a quantity of electrically conductive microparticles dispersed within the polymer matrix in an amount and distribution structured so that the composite material exhibits an increase in thermal emissivity of at least about 8% with increasing temperature of the composite material, for temperatures over a range of 23° C.-60° C. inclusive. The composite material may be used as (or as part of) a passive variable radiator for cooling an object in thermal communication with the composite material.