The present disclosure relates to a method for reducing or preventing colloids adhesion and/or fouling on a substrate in need thereof by forming a coating having a first layer that includes a polyphenol compound, and a second layer that includes a hydrophilic polymer having repeating units derived from one or more zwitterionic monomers, typically one or more betaine monomers, on the substrate. The present disclosure also relates to the coating made thereby and an article having the said coating.

Disclosed herein are methods for manufacturing a functionally graded polymer material. The methods comprise preparing a melted polymer mixture comprising a thermoplastic polymer and a magnetic filler dispersed in the thermoplastic polymer, molding the melted polymer mixture and applying a magnetic field to a portion of the melted polymer mixture to form a functionally graded polymer material. The resulting functionally graded polymer material has a magnetic filler gradient formed through a thickness of the material.

A non-dispensing manufacturing process includes forming a paper cone; engaging the paper cone with a voice coil to form a vibration assembly; fixing a yoke, a magnet set, and a washer to form a magnetic circuit assembly; engaging a basket with the magnetic circuit assembly; and engaging the basket with the vibration assembly to form a speaker, where no glue is used in the manufacturing process. A speaker includes a paper cone; a voice coil engaged with the paper cone to form a vibration assembly, where a junction between a bobbin of the voice coil and the paper cone has a first welding layer; a magnetic circuit assembly including a yoke, a magnet set, and a washer that are integrally fixed; and a basket engaged with the magnetic circuit assembly and the vibration assembly.

Provided are a carbon fibre thermoplastic resin prepreg which is a carbon fibre prepreg obtained by impregnating a PAN-based carbon fibre in which the average fibre fineness of a single fibre is 1.0 dtex to 2.4 dtex with a thermoplastic resin, wherein the thermoplastic resin satisfies 20<(FM/FS)<40 (where FM: flexural modulus (MPa) of a resin sheet comprising only the thermoplastic resin, and FS: flexural strength (MPa) of the resin sheet), a method for manufacturing the same, and a carbon fibre composite material employing the carbon fibre prepreg.

A method of making a multilayer sheet includes: forming a substrate including a substrate first surface and a substrate second surface; applying a conductive layer including a base and a conductive coating to the substrate first surface; and applying an ultraviolet cured coating layer to a surface of the conductive layer opposite that in contact with the substrate second surface, wherein the ultraviolet cured coating layer comprises a multifunctional acrylate oligomer and an acrylate monomer; pressing the substrate, conductive layer, and ultraviolet cured coating layer together to form a stack; heating the stack; activating the ultraviolet cured coating layer with an ultraviolet radiation source; and removing the base from the stack leaving a conductive multilayer sheet; wherein the ultraviolet cured coating layer remains adhered to the conductive layer.

A fiber reinforced thermoplastic resin molded article includes (A) carbon fibers, (B) graphite and (C) a thermoplastic resin, wherein the carbon fibers (A), the graphite (B) and the thermoplastic resin (C) are contained in amounts of 1 to 30 parts by weight, 1 to 40 parts by weight and 30 to 98 parts by weight, respectively, relative to 100 parts by weight, of the carbon fibers (A), the graphite (B) and the thermoplastic resin (C), the weight average fiber length of the carbon fibers (A) is 0.3 to 3 mm and the specific gravity of the molded article is 1.1 to 1.9 g/cm.sup.3. The fiber reinforced thermoplastic resin molded article has excellent bending strength and heat conductivity.

In general, the present invention is directed to a continuous method of making a polymer foam by using a polymer having a first monomeric component and a second monomeric component. The method employs a tandem type extruder having a first extruder and a second extruder. The method disclosed herein can provide a foam having a desired cell size, cell density, porosity, foam density, and/or thermal conductivity, etc. In turn, the polymer foams produced according to the present method can have numerous applications, such as thermal insulation applications for appliances including ovens, freezers, refrigerators, etc.

A method of making a plastic article is disclosed. According to this method, a plastic article is formed from a thermoplastic composition that includes a first polymer component that is (i) a poly(siloxane-carbonate) copolymer, (ii) a poly(aliphatic ester)-polycarbonate having soft block ester units, derived from monomers including an alpha, omega C.sub.6-20 aliphatic dicarboxylic acid or derivative thereof, a dihydroxyaromatic compound, and a carbonate source, (iii) a thermoplastic polyurethane, (iv) a thermoplastic polyurethane, or a combination comprising any of the foregoing. An additive such as a photochromic dye is then loaded into the plastic article by contacting a surface of the article with supercritical fluid carbon dioxide comprising the additive dissolved or dispersed therein.

The present invention pertains to a method for producing a long-fiber composite in which a fiber bundle is impregnated with a non-Newtonian resin. More specifically, the present invention pertains to a method for producing a thermoplastic long-fiber composite, wherein the efficiency of a non-Newtonian resin impregnation process is improved using Equation 1 representing the correlation between the penetration pressure, effective viscosity, transverse permeability, and average penetration velocity of the non-Newtonian resin, and the thickness of the fiber bundle.

An active energy ray-curable resin composition which contains (A) inorganic oxide particles each having an organic functional group on the surface, (B) a siloxane oligomer which has at least one functional group selected from the group consisting of a (meth)acryloyl group, an epoxy group and a vinyl group, while having a weight average molecular weight of 200-3,000, (C) a polyfunctional (meth)acrylate having a specific structure, (D) a urethane (meth)acrylate having two or more (meth)acryloyl groups in each molecule, and (E) an ultraviolet absorbent.