Expandable chlorinated vinyl chloride-based resin particles from which a chlorinated vinyl chloride-based resin foamed molded product achieving both high expansion ratio and excellent surface appearance are provided. The expandable chlorinated vinyl chloride-based resin particles have a porosity of not more than 5.5 (ml/100 g).

The present application relates to a field of a flame retardant polystyrene, and specifically discloses a preparation method for a flame retardant polystyrene. The preparation method for a flame retardant polystyrene includes the following steps: predissolving a brominated flame retardant containing a first active functional group in a reaction system of a styrene monomer to form a homogeneous solution; then, performing an end capping reaction by an olefin monomer containing a second active functional group to introduce a double bond at an end of the brominated flame retardant, so that it can be bonded to a polystyrene molecular chain by copolymerizing; performing a prepolymerization in a reactor to obtain a prepolymer; performing a post polymerization in the reactor or by extruding, to obtain a special material or a flame retardant masterbatch of the flame retardant polystyrene.

Disclosed is a blood-compatible polymer represented by Formula 1. A polymer obtained by grafting a fluorinated methacrylate onto a polyvinylidene fluoride copolymer and provided in one aspect of the present invention is a polymer with blood compatibility, and may provide a blood-compatible material with hydrophobicity. In addition, it is possible to provide a material with controlled contact angle and surface energy properties by controlling the hydrogen fluoride length of the fluorinated methacrylate monomer for modification. Furthermore, it is possible to provide coating with controlled surface properties and blood compatibility through a simple process. Furthermore, it is possible to provide a freestanding polymer film with blood compatibility.

Disclosed herein are thermoplastic polymer matrix compositions for a continuous fiber reinforced thermoplastic composite article, comprising at least one of poly(vinyl chloride) and/or chlorinated poly(vinyl chloride). Also disclosed herein are methods for formulating thermoplastic polymer matrix compositions suitable for impregnating continuous fibers for continuous fiber-reinforced thermoplastic composite articles, wherein the thermoplastic polymer matrix compositions have sufficient viscosity and thermal stability to impregnate continuous fibers and withstand thermal treatment at high temperatures and long residence times without decomposing.

The claimed material relates to a fiber and polymer composite having enhanced modulus, viscoelastic and rheological properties.

The present application relates to a field of a flame retardant polystyrene, and specifically discloses a preparation method for a flame retardant polystyrene. The preparation method for a flame retardant polystyrene includes the following steps: predissolving a brominated flame retardant containing a first active functional group in a reaction system of a styrene monomer to form a homogeneous solution; then, performing an end capping reaction by an olefin monomer containing a second active functional group to introduce a double bond at an end of the brominated flame retardant, so that it can be bonded to a polystyrene molecular chain by copolymerizing; performing a prepolymerization in a reactor to obtain a prepolymer; performing a post polymerization in the reactor or by extruding, to obtain a special material or a flame retardant masterbatch of the flame retardant polystyrene.

The present invention relates to a master mixture comprising: from 40 to 95% by weight of a photoluminescent pigment, said pigment having a particle size limited by sifting at 30 μm; 5 to 60% by weight of a polymer in the form of an elastomer or an elastomer precursor chosen from fluorinated polymers from the FKM family, the polyurethane (TPU) family, Ethylene vinyl acetate (EVA) copolymers, silicones, ethylene propylene rubbers (EPR) and the thermoplastic derivatives (TPO) thereof and acrylic elastomers.

A fluororesin film including a fluorine-containing composition, wherein the oxygen element percentage as measured when heat treatment is performed at 180° C. for 3 minutes and then the state of one or both surfaces of the film is observed by scanning X-ray photoelectron spectroscopy (XPS/ESCA) is 1.35 atom % or more, and an absolute value of the rate of dimensional change in MD and TD before and after heat treatment as measured when the film is heat-treated at 180° C. for 10 minutes and then cooled to room temperature is 2% or less. Also disclosed is a copper-clad laminate, including copper foil and the fluororesin film; a substrate for circuit, including the copper-clad laminate; and a method for producing the copper-clad laminate.

The claimed material relates to a fiber and polymer composite having enhanced modulus, viscoelastic and rheological properties.

An ion exchange membrane includes a layer S including a fluorine-containing polymer having a sulfonic acid group, a layer C including a fluorine-containing polymer having a carboxylic acid group, and a plurality of strengthening materials arranged inside the layer S and functioning as at least one of reinforcement yarn and sacrifice yarn. A and B satisfy following formulas:
B≤240 μm  (1)
2.0≤B/A≤5.0  (2) wherein, when the ion exchange membrane is viewed from the top surface, A represents an average cross-sectional thickness of the membrane measured in pure water for a region, in which the strengthening materials do not exist, and B represents an average cross-sectional thickness of the membrane measured in pure water for a region, in which strands of the reinforcement yarn overlap with each other, and in a region, in which the reinforcement yarn overlaps with the sacrifice yarn.