Abstract: The present invention applies to a molding method for a fiber-reinforced plastic structure having an internal cavity Firstly, grain groups, which mainly consist of a plurality of high-rigidity grains, are accommodated in bags, and a plurality of cores are formed. A reinforcing fiber substrate, is placed between the plurality of adjacent cores so as to be interposed therebetween. For example, a plurality of molding base materials are prepared by surrounding each core with a prepreg, and the plurality of molding base materials are combined and placed inside a molding die, and the molding base materials are compression molded. When compression molding, a part of the outer surface of the cores is locally pressurized, and the internal pressure of the cores is increased, changing the shape thereof, thus eliminating voids that are present between the cores and the prepreg and/or the prepreg and the molding surface of the die.
Abstract: This method for producing a compound uses a continuous tank reactor which is provided with two or more reaction tanks for producing the compound and with a reaction liquid feeding pipe that feeds a reaction liquid from an upstream reaction tank to a downstream reaction tank, said method being characterized in that the Reynold's number of the reaction liquid that flows in the reaction liquid feeding pipe is configured to be 1800-22000. Furthermore, this compound production system is used in said method for producing a compound, and is formed by housing at least one of the reaction tanks in a portable container.
July 3, 2015
May 3, 2018
Mitsubishi Rayon Co., Ltd., Mitsubishi Chemical Engineering Corporation
Abstract: To reduce formation of side products and to enhance a selectivity rate in a method for producing 3-chloro-2-hydroxypropyl (meth)acrylate and in a method for producing glycidyl (meth)acrylate. The present invention is characterized by a method for producing 3-chloro-2-hydroxypropyl (meth)acrylate through a reaction of (meth)acrylic acid and epichlorohydrin; more specifically, the reaction is carried out by using 0.5 to 2 mol of epichlorohydrin relative to 1 mol of (meth)acrylic acid, and by adding epichlorohydrin to (meth)acrylic acid in the presence of a catalyst. Also, the present invention is characterized by a method for producing glycidyl (meth)acrylate through a reaction of 3-chloro-2-hydroxypropyl (meth)acrylate and a basic carbonate compound in a polar solvent.
Abstract: The present invention relates to a molding material, having: (A): a fiber substrate made of carbon fibers 5 mm or longer; (B): at least either an epoxy (meth)acrylate resin or an unsaturated polyester resin; (C): (C-1) inorganic fibrous filler with a cross-sectional area of at least 0.8 ?m2, or (C-2) inorganic flaky filler with a cross-sectional area of at least 0.05 ?m2, both of which have an aspect ratio of 2.0 or higher and a length of less than 3 mm; and (D): a polyisocyanate compound.
Abstract: The present invention relates to an amide compound solution comprising an amide compound and a surfactant. More specifically, the invention relates to an amide compound solution comprising amide compound, and 2.7˜20 mg of a cationic surfactant per 1 kg of the amide compound or 0.01˜10 mg of a C15˜C20 carboxylic acid or its salt as an anionic surfactant per 1 kg of the amide compound. The present invention provides an amide compound solution which is manufactured using a biocatalyst and which has a low level of foaming, and thereby improving the operability and yield when manufacturing an amide compound-based polymer.
Abstract: A resin composition including an epoxy resin (A), a curing agent (B), and vinyl polymer particles (C), in which the contained amount of epoxy resin (a1) having a molecular weight of 100-480 is 30-90 parts by mass per 100 parts by mass of the epoxy resin (A), the contained amount of epoxy resin (a2) having a molecular weight of 2,000-40,000 is 10-70 parts by mass per 100 parts by mass of the epoxy resin (A), the contained amount of the vinyl polymer particles (C) is 2-30 parts by mass per 100 parts by mass of the epoxy resin (A), and the instantaneous maximum thickening value of the vinyl polymer particles obtained by the following method is 0.3-5.0 Pa·s/° C.
Abstract: The invention provides a hollow fiber membrane exhibiting a favorable gas permeation performance and an excellent heat resistance in which the generation of pinholes are suppressed, and a hollow fiber membrane module using the same. The hollow fiber membrane comprising a gas permeable nonporous layer; and a porous supporting layer to support the nonporous layer formed of a thermoplastic elastomer having a DSC melting peak temperature of 130° C. or higher and a rupture elongation prescribed in ISO 37 (2010) of 300% or more.
Abstract: A production method for a fiber-reinforced thermoplastic resin composite material, the method using a crosshead die (1) that has a maximum aperture height of 1 mm or more, wherein reinforcing fibers are supplied in a reinforcing fiber bundle to the crosshead die (1), the reinforcing fibers are conjugated with a melted thermoplastic resin, and the conjugate is brought into contact with a pressurization surface that is at or below the solidification temperature of the thermoplastic resin, is pressurized, and is shaped to have a thickness that is 50% or less of the aperture height.
Abstract: A (meth)acrylate resin material comprising a polymer (A1) having constituent units (a1) derived from a compound represented by formula (1) and constituent units (a2) derived from methyl methacrylate, and an acid (B) and/or a nucleating agent (C). In the formula, Ar represents an aryl group, and the aromatic ring in Ar is directly bonded to the ester end in formula (1).
Abstract: A binder resin for a nonaqueous secondary battery electrode of the invention satisfies Is?30 (Is indicates a sum of scattering intensities observed in a particle size range of from 1 to 100 nm) when a solution is formed by dissolving the binder resin in water at a concentration of 5% by mass and particle size distribution is measured by a dynamic light scattering method at 25° C. The binder resin contains a polymer (B) having a structural unit represented by the following Formula (11) and a specific structural unit. The binder resin also contains a polymer (?) having a specific structural unit and a structural unit represented by the following Formula (22), and/or a mixture of a polymer (?1) having a specific structural unit and a polymer (?2) having a structural unit represented by the following Formula (22).
Abstract: Provided is a laminate film that exhibits an excellent appearance, chemical resistance, and weather resistance, and suppresses yellowing even after long-term heating. The laminate film is formed from a surface layer including a vinylidene fluoride resin (F) and an acrylic resin composition (Y) layer, the acrylic resin composition (Y) containing a hindered amine light stabilizer having a molecular weight of 1400 or more. Further provided is a molded laminate including a base material and the laminate film laminated to the base material. Further provided is a method for producing a molded laminate including a step for producing a preform body by vacuum forming or pressure forming the laminate film in a first die, and a step for integrating the preform body and the base material by injection molding the resin that is to be the base material in a second die.
Abstract: The present invention provides: an acrylic fiber having a fineness of 0.5 to 3.5 dtex and having excellent gloss, pilling resistance, and texture; a method for producing said acrylic fiber; and a spun yarn and a knitted fabric containing said acrylic fiber. Provided is an acrylic fiber having a filament fineness of 0.5 to 3.5 dtex, wherein the product K of the value of knot strength (cN/dtex) and the value of knot elongation (%) is from 8 to 30 inclusive, and the number of recesses having a depth of 0.1 ?m or greater is 10 or fewer.
Abstract: 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.
Abstract: Provided is an article having high scratch resistance and satisfactory fingerprint wipeability. Disclosed is an article having a microrelief structure containing a cured product of a resin composition on the surface, in which the indentation elastic modulus (X) [MPa] and the creep deformation ratio (Y) [%] of the cured product satisfy the following formulas (1) and (2): 80?X?560??(1) Y?(0.00022X?0.01)×100??(2).
Abstract: An object of the invention is to provide a curable composition having a HALS skeleton and capable of producing polymers having excellent weather resistance and outer appearance. The present invention provides a curable composition including at least a monomer component that contains a monomer (A) represented by a certain formula and a monomer (B) polymerizable with the monomer (A). In the curable composition, the content of the monomer (A) is 0.01 to 35 mol % in the monomer component, and the content of the monomer (B) is 65 to 99.99 mol % in the monomer component.
Abstract: Provided are a thermoplastic resin composition whereby gum formation is suppressed during manufacturing of a matte fluororesin molded article such as a film, and a fluorine-based matte film having excellent matte properties and chemical resistance, and a layered film. A thermoplastic resin composition (?) for a chemical-resistant matte film, comprising a fluorine-based resin (A), a matting agent (B) which is a thermoplastic resin insoluble in the fluorine-based resin (A), and a thermoplastic resin (C) soluble in the fluorine-based resin (A). A thermoplastic resin composition (?) containing the fluorine-based resin (A) and an acrylic matting agent (D) which is a thermoplastic resin, the content ratio of alkyl acrylate units with respect to 100% by mass of monofunctional monomer units in the monomer units constituting the matting agent (D) being 50-100% by mass, and the content ratio of other monofunctional monomer units being 0-50% by mass.
Abstract: A resin composition that has good heat resistance and handleability and that can produce a prepreg which has a good balance between tackyness and drapability and which causes little resin flow during prepreg molding, a prepreg that is manufactured using the resin composition, and a fiber-reinforced composite are provided. A resin composition that contains a maleimide compound, diallyl bisphenol A, and a diallyl isophthalate polymer, a prepreg in which reinforcing fibers are impregnated with the resin composition, and a fiber-reinforced composite material that is obtained by molding the prepreg are provided.
Abstract: According to the present invention, a porous electrode substrate with greater sheet strength, lower production cost, and excellent gas permeability and conductivity as well as its manufacturing method are provided. Also provided are a precursor sheet for forming such a substrate, and a membrane electrode assembly and a polymer electrolyte fuel cell containing such a substrate. The method for manufacturing such a porous electrode substrate includes the following steps ˜:  a step for manufacturing a sheet material in which short carbon fibers (A) are dispersed;  a step for manufacturing a precursor sheet by adding a water-soluble phenolic resin and/or water-dispersible phenolic resin to the sheet material; and  a step for carbonizing the precursor sheet at a temperature of 1000° C. or higher.
Abstract: An acrylic film having few fish eyes and a method for producing latex of an acrylic rubber-containing polymer having low amounts of coarse particles, excellent filtering properties, and low filter clogging frequency during a filtration step for removing foreign substances are provided. An acrylic film containing an acrylic rubber-containing polymer (G) has a thickness of 30 to 300 ?m, wherein the number of fish eyes that are 0.001 mm2 or greater in size is 130/m2 or fewer when a section having a light transmission rate of 75% or less for light having a wavelength of 400 to 1100 nm was detected as a fish eye.
Abstract: To provide a crosslinked polyester resin by using environmentally friendly and low-cost raw materials while reducing the content of a bisphenol A-derived component. [Subject Matter] [Solutions] To provide a polyester resin containing a trivalent or higher acid-derived component and a bisphenol A-alkylene oxide adduct-derived component. In such a polyester resin, the bisphenol A-alkylene oxide adduct-derived component is contained at 0.01˜0.35 mol relative to 1 mol of all the acid-derived components, and the ratio of acid value (mg KOH/g) to hydroxyl value (mg KOH/g) is set to be 1:3˜1:26.