Abstract: A PVC resin composition and a method for manufacturing a pipe having high heat resistance and transparency are provided. The PVC resin composition includes 100 phr of a PVC resin, 0.5 phr to 5 phr of a modifier, and 1 phr to 10 phr of a heat resistance improving agent. A degree of polymerization of the PVC resin is from 800 to 1,350. The modifier is a polymer containing a first monomer and a second monomer. The first monomer is ethylene or a derivative of the ethylene, and the second monomer is a polyester.

Abstract: A circuit board cleaning system includes a cleaning tank, an ion exchange resin column, and a pump unit. The cleaning tank accommodates a cleaning liquid and allows a circuit board to be immersed in the cleaning liquid. The cleaning liquid includes a liquid water and a hydrocarbon-based surfactant. An ion exchange resin filled in the ion exchange resin column is a basic ion exchange resin. The pump unit is configured to pump the cleaning liquid into the ion exchange resin column, and enable the cleaning liquid to pass through the ion exchange resin column. When the cleaning liquid passes through the ion exchange resin column, the basic ion exchange resin deprotonates the hydrocarbon-based surfactant. After the cleaning liquid passes through the ion exchange resin column, the cleaning liquid is returned to the cleaning tank to remove acidic residue remaining on a surface of the circuit board.

Abstract: A powder composition includes a first powder, a second powder, and a modified functional group. A particle size range of the first powder is between 1 micron and 100 microns. The second powder and the modified functional group are modified on the first powder. A particle size range of the second powder is between 10 nanometers and 1 micron. A manufacturing method of a powder composition is also provided.

Abstract: A fiber composite material is provided. The fiber composite material includes 40 phr to 65 phr of a polypropylene resin, 30 phr to 60 phr of a long glass fiber, 0.5 phr to 5 phr of a black masterbatch, and 0.5 phr to 10 phr of a compatibilizer. The black masterbatch contains carbon black having a basic active group on a surface of the carbon black. The compatibilizer is grafted with maleic anhydride.

Abstract: The disclosure discloses a heat-sealable polyester film, including a base layer and a heat-seal layer formed on the base layer. The heat-seal layer includes a physically regenerated polyester resin, a chemically regenerated polyester resin, and a modifier. The heat-sealable temperature of the heat-sealable polyester film is between 100° C. and 230° C.

Abstract: A rubber resin material with high dielectric constant and a metal substrate with high dielectric constant are provided. The rubber resin material with high dielectric constant includes a rubber resin composition with high dielectric constant and inorganic fillers. The rubber resin composition with high dielectric constant includes: 40 wt % to 70 wt % of a liquid rubber, 10 wt % to 30 wt % of a polyphenylene ether resin, and 20 wt % to 40 wt % of a crosslinker. A molecular weight of the liquid rubber ranges from 800 g/mol to 6000 g/mol. A dielectric constant of the rubber resin material with high dielectric constant is higher than or equal to 2.0.

Abstract: A matte film for hot pressing and a manufacturing method thereof are provided. The manufacturing method includes steps of forming at least one polyester composition into an unstretched polyester thick film and stretching the unstretched polyester thick film in a machine direction (MD) and a transverse direction (TD). The polyester composition includes 81% to 97.9497% by weight of a polyester resin, 0.02% to 2% by weight of an antioxidative ingredient, 0.0003% to 1% by weight of a nucleating agent, 0.01% to 2% by weight of a flow aid, 0.01% to 2% by weight of a polyester modifier, 0.01% to 2% by weight of an inorganic filler, and 2% to 10% by weight of silica particles. The polyester resin has an intrinsic viscosity between 0.60 dl/g and 0.80 dl/g.

Abstract: A heat-insulating fireproof structure and a method of manufacturing the heat-insulating fireproof structure are provided. The heat-insulating fireproof structure includes a fireproof fiber layer, and at least one fireproof reinforcement layer. The fireproof fiber layer includes an inorganic aerogel. The inorganic aerogel is present in the fireproof fiber layer by being attached on surfaces of fibers therein. Based on the fireproof fiber layer being 100 wt %, a content of the inorganic aerogel is from 20 wt % to 50 wt %.

Abstract: A polyphenylene ether bismaleimide resin is provided. The polyphenylene ether bismaleimide resin (PPE-BMI) is formed from a modified polyphenylene ether diamine and a maleic anhydride by a condensation polymerization. The modified polyphenylene ether diamine is formed by reacting a phenol-based compound with a polyphenylene ether.

Abstract: A polyurethane resin and a method for manufacturing the same are provided. The method includes the following steps: mixing a polyester polyol, a polyether polyol, a first chain extender, diisocyanate, and a mixed solvent for polymerization, so as to obtain a prepolymer; and adding a second chain extender into the prepolymer for chain extension, so as to obtain the polyurethane resin. The mixed solvent includes diethylformamide and methyl ethyl ketone, and a mass ratio of the diethylformamide to the methyl ethyl ketone in the mixed solvent ranges from 0.45 to 1.80. Based on a total weight of the polyurethane resin being 100 wt %, a total added amount of the first chain extender and the second chain extender ranges from 0.9 wt % to 2.5 wt %.

Abstract: A manufacturing method of a polymer material at least includes the following steps. A raw material including polyethylene terephthalate is provided. An alcoholysis reaction is performed by using the raw material with aliphatic diols to form an intermediate product, wherein the intermediate product includes bis 2-hydroxyethyl terephthalate. A polymerization reaction is performed by using the intermediate product and polytetramethylene ether glycol to form a thermoplastic polyester elastomer.

Abstract: A manufacturing method of a thermoplastic polyester elastomer at least includes the following. An alcoholysis reaction is performed by using recycled polyethylene terephthalate with aliphatic diols to form an intermediate product. The intermediate product is bis 2-hydroxyethyl terephthalate. The intermediate product is used for a polymerization reaction with long chain polyalkyl glycols to form the thermoplastic polyester elastomer.

Abstract: A fluoride-based resin prepreg and a circuit substrate using the same are provided. The fluoride-based resin prepreg includes 100 PHR of a fluoride-based resin and 20 to 110 PHR of an inorganic filler. Based on a total weight of the fluoride-based resin, the fluoride-based resin includes 10 to 80 wt % of polytetrafluoroethylene (PTFE), 10 to 50 wt % of fluorinated ethylene propylene (FEP), and 0.1 to 40 wt % of perfluoroalkoxy alkane (PFA). The circuit substrate includes a fluoride-based resin substrate and a circuit layer that is formed on the fluoride-based resin substrate.

Abstract: An aqueous acrylic resin with high heat resistance, a polymeric composition, and a method for preparing the aqueous acrylic resin with high heat resistance are provided. The polymeric composition includes a monomer composition and a reactive emulsifier. Based on 100 wt % of the monomer composition, the monomer composition includes at least one alkyl group containing methyl acrylate, at least one carboxyl group containing methacrylic acid, an alkene-based unsaturated group containing methyl acrylate, a hydroxyl group containing acrylic polyester polyol and/or a hydroxyl group containing acrylic polyether polyol, and an alkoxysilane.

Abstract: A prepreg and a metallic clad laminate are provided. The prepreg includes a reinforcing material and a thermosetting resin layer. The thermosetting resin layer is formed by immersing the reinforcing material in a thermosetting resin composition. The thermosetting resin composition includes a polyphenylene ether resin, a liquid polybutadiene resin, a crosslinker, and fillers. Based on a total weight of the thermosetting resin composition being 100 phr, an amount of the fillers ranges from 50 phr to 70 phr. The fillers include a granular dielectric filler and a flaky thermal conductive filler. The metallic clad laminate is formed by disposing at least one metal layer onto the prepreg.

Abstract: A breathable and waterproof membrane is made from a modified thermoplastic polyester elastomer. The breathable and waterproof membrane has a moisture permeability of greater than or equal to 25000 g/m2·day. The modified thermoplastic polyester elastomer is formed from a thermoplastic polyester elastomer, a regenerated polyethylene terephthalate, and a compatibilizer. Based on a total weight of the modified thermoplastic polyester elastomer being 100 phr, a content of the regenerated polyethylene terephthalate is greater than 0 phr and up to 50 phr. Based on a total weight of the thermoplastic polyester elastomer being 100 wt %, the thermoplastic polyester elastomer includes 25 wt % to 75 wt % of hard segments and 25 wt % to 75 wt % of soft segments.

Abstract: A separating membrane for dental surgeries and a method for manufacturing the same are provided. The separating membrane has biodegradability, and includes a biodegradable porous base layer and a hydrophilic substance. The hydrophilic substance is bonded to the biodegradable porous base layer, and is selected from the group consisting of hyaluronic acid, derivatives of the hyaluronic acid, and water-soluble vitamins. An outer surface of the separating membrane has a water contact angle of less than 80°.

Abstract: A cell culture bag is provided. The cell culture bag includes a plastic bag body and a hydration layer. A culture space is formed in the plastic bag body. The plastic bag body has a zwitterionic polymer plastic surface facing the culture space. A material forming the zwitterionic polymer plastic surface includes a zwitterionic polymer. The hydration layer is attached onto the zwitterionic polymer plastic surface, and the culture space is surrounded by the hydration layer.

Abstract: A method for preparing a low migration plasticizer of di-2-ethylhexyl terephthalate is provided. The method includes a step of adding a short chain alcohol component having 4 to 6 carbon atoms and a long chain alcohol component having 9 to 13 carbon atoms in an esterification reaction between terephthalic acid and 2-ethylhexanol, so as to obtain a modified di-2-ethylhexyl terephthalate including residues derived from the short chain alcohol component and the long chain alcohol component. The esterification reaction is carried out under a temperature from 30° C. to 225° C. and a pressure from 80 mbar to 1033 mbar.

Abstract: The disclosure provides a bottle cap composition and a bottle cap. The bottle cap composition includes polyethylene terephthalate (PET), a soft polyester material, a lubricant, and an antioxidant.