Abstract: A method for producing a polyester polyol is provided, which includes: feeding a first antioxidant and a raw material reactant that includes a polyacid and a polyol into a reactor; subjecting the polyacid and the polyol to an esterification reaction to form an oligomer; and performing a prepolymerization reaction on the oligomer to obtain a prepolymerization reactant. During the prepolymerization reaction, the method includes sampling and monitoring an acid value of the prepolymerization reactant. When the acid value of the prepolymerization reactant reaches a first acid value, an esterification reaction catalyst is added to the prepolymerization reactant for carrying out a polycondensation reaction and generating a polycondensation reactant that contains the polyester polyol. During the polycondensation reaction, the method includes sampling and monitoring an acid value of the polycondensation reactant.

Abstract: A composition and a manufacturing method of a highly flame-retardant and low-smoke extruded polyvinyl chloride pipe are provided. The composition includes a polyvinyl chloride resin material, a flame retardant additive and a carbon forming additive. The polyvinyl chloride resin material is in an amount between 10 PHR (parts per hundred resin) and 90 PHR. The flame retardant additive is in an amount between 0.5 PHR and 2.0 PHR, and is a phosphorus-containing flame retardant modified by a modifier. The carbon forming additive is in an amount between 0.2 PHR and 1.0 PHR. The carbon forming additive is at least one material selected from a group consisting of zinc chloride, zinc stearate, calcium stearate, zinc hydroxystannate, anhydrous zinc stannate, zinc phosphate and zirconium phosphate. A total added amount of the flame retardant additive and the carbon forming additive in the composition is not greater than 3 PHR.

Abstract: A manufacturing method of a heat-resistant tableware and a molded article of the heat-resistant tableware are provided. The manufacturing method of the heat-resistant tableware includes: providing a polyester composite material that includes 50 wt % to 85 wt % of polyethylene terephthalate, 0 wt % to 5 wt % of an organic nucleating agent, and 10 wt % to 30 wt % of an inorganic nucleating agent; and injecting the polyester composite material into a mold in an injection molding process, in which a mold temperature of the mold is controlled to be not less than 110° C., and a crystallinity of the polyester composite material in the mold is controlled to be between 20% and 30%, so that the polyester composite material is formed into the molded article of the heat-resistant tableware in the mold, and the molded article has a heat distortion temperature of not less than 150° C.

Abstract: A composition and a manufacturing method of a highly flame-retardant and low-smoke injection-molded polyvinyl chloride pipe are provided. The composition includes a polyvinyl chloride resin material, a chlorinated polyvinyl chloride resin material, a flame retardant additive and a carbon forming additive. A first number-average degree of polymerization (DPn) of the polyvinyl chloride resin material is between 600 and 1,000. A second number-average degree of polymerization of the chlorinated polyvinyl chloride resin material is between 600 and 800. A difference between the first number-average degree of polymerization and the second number-average degree of polymerization is within 400. The flame retardant additive is a phosphorus-containing flame retardant modified by a modifier. A total added amount of the flame retardant additive and the carbon forming additive in the composition is not greater than 3 PHR.

Abstract: A chlorinated polyvinyl chloride resin composition, an extruded sheet and a method for manufacturing the same are provided. The chlorinated polyvinyl chloride resin composition includes a chlorinated polyvinyl chloride resin and a plasticizing processing aid. The chlorinated polyvinyl chloride resin has an amount of 80 parts by weight to 120 parts by weight, a degree of polymerization of from 500 to 1,100, and a chlorine content of from 60% to 75%. The plasticizing processing aid includes a vinyl chloride graft copolymer and an acrylic compound. A grafted functional group of the vinyl chloride graft copolymer is at least one of polyol ester and ethylene vinyl acetate.

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 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: A polyurethane adhesive and a mixture used for manufacturing a plastic athletic track are provided. The polyurethane adhesive includes a urethane pre-polymer which is formed by a reaction between an isocyanate and a polyol. The polyol is selected from the group consisting of polyether polyol and polybutadiene polyol, and a number average molecular weight of the polyol is between 1,000 g/mole and 6,000 g/mole. Based on the total weight of the polyurethane adhesive, a content of the urethane pre-polymer is between 80 wt % and 99.5 wt %, and a viscosity of the polyurethane adhesive is between 1,000 cps and 3,000 cps under an environmental temperature of between 15° C. and 40° C.

Abstract: A resin composition suitable for profile extrusion processing is provided. Based on the total weight of the resin composition, the resin composition includes 40 wt. % to 92.1 wt. % of polyester; 2 wt. % to 15 wt. % of modifier, 0.2 wt. % to 1.5 wt. % of tackifier, and 0.1 wt. % to 40 wt. % of filler.

Abstract: A thermoplastic polyurethane resin suitable for melt spinning is formed from a reaction mixture via a polymerization reaction. The reaction mixture includes an isocyanate component and a polyol component. The polyol component includes a first polyol that has a first number average molecular weight and a second polyol that has a second number average molecular weight. The first number average molecular weight is between 1,000 g/mol and 1,500 g/mol, and the second number average molecular weight is between 2,500 g/mol and 3,000 g/mol. One resin component formed by the first polyol via the polymerization reaction is defined as a low melting point segment and correspondingly has a first melting point between 170° C. and 185° C. Another resin component formed by the second polyol via the polymerization reaction is defined as a high melting point segment and correspondingly has a second melting point between 195° C. and 210° C.

Abstract: An extruder and a long fiber thermoplastic (LFT) extrusion member manufactured thereby, and the extruder uses the LFT as a raw material to produce LFT extrusion members such as LFT sheets, pipes and profiles by a continuous extrusion molding process. The structural improvement of the extruder screw, including the screw body having three different thread groove deep sections, in sequence, a feed section, a compression section and a metering section, so that the LFT extrusion member produced by the extruder has high strength, high stiffness, high dimensional stability, low warpage and resistance to creep.

Abstract: A thermoplastic polyurethane resin suitable for a laminating process and a method for producing the same are provided. The thermoplastic polyurethane resin is formed of an isocyanate component, a polyol component, a chain extender component, and a chain terminator component that is a monohydric alcohol via a polymerization reaction. The polyol component includes a first polyol having a number average molecular weight between 600 and 2,000 g/mol and a second polyol having a number average molecular weight between 1,500 and 3,000 g/mol. The chain extender component includes a first chain extender and a second chain extender. The first chain extender is a dihydric alcohol having a carbon chain length of C2-6, and a molecular structure thereof is linear and symmetrical. The second chain extender is a dihydric alcohol having a carbon chain length of C3-10, and a molecular structure thereof has a side chain and/or an ether group.

Abstract: A polyurethane hot melt adhesive is provided. The polyurethane hot melt adhesive is formed by reacting an isocyanate component, a polyol component, and a chain extender component. The polyol component includes a first polyol and a second polyol, a number-average molecular weight of the first polyol is within a range from 650 to 1,500, and a number-average molecular weight of the second polyol is within a range from 1,500 to 3,000. The chain extender component includes a first chain extender and a second chain extender, and the second chain extender is a diyol having an ether group or a hydrocarbyl. A ratio between a weight percentage of the first chain extender and a weight percentage of the second chain extender is within a range from 9:1 to 4:1. A forming temperature of the polyurethane hot melt adhesive is within a range from 100° C. to 150° C.

Abstract: A thermoplastic polyurethane resin suitable for melt spinning is formed from a reaction mixture via a polymerization reaction. The reaction mixture includes an isocyanate component and a polyol component. The polyol component includes a first polyol that has a first number average molecular weight and a second polyol that has a second number average molecular weight. The first number average molecular weight is between 1,000 g/mol and 1,500 g/mol, and the second number average molecular weight is between 2,500 g/mol and 3,000 g/mol. One resin component formed by the first polyol via the polymerization reaction is defined as a low melting point segment and correspondingly has a first melting point between 170° C. and 185° C. Another resin component formed by the second polyol via the polymerization reaction is defined as a high melting point segment and correspondingly has a second melting point between 195° C. and 210° C.

Abstract: A use of a low specific gravity PET composite material that is suitable for manufacturing a tableware article by injection molding is provided. The tableware article provides a balance between aesthetic appearance and food safety and can be used in place of melamine tableware. The low specific gravity PET composite material includes 66.5-96.3 wt % of PET, 0-20 wt % of PBT, 3-10 wt % of an inorganic filler, 0.1-0.5 wt % of an antioxidant, 0.1-1 wt % of a processing aid, and 0.5-2 wt % of a nucleating agent, and the total amount of all components is 100 wt %.

Abstract: A PBT composite material having high heat resistance and high gloss for a vehicle mirror and a method for preparing the same are provided. The PBT composite material includes 57.2-88.9 wt % of PBT, 5-20 wt % of PET, 5-20 wt % of calcium silicate, 0-10 wt % of coupling agent-modified talc, 0.1-0.3 wt % of an antioxidant, 0.5-1.5 wt % of a flowing aid and 0.5-1.0 wt % of a nucleating agent. In the preparing method, the above components are placed into an extruding machine to perform a melt plasticization, and a molten material extruded by a die head of the extruding machine is water-cooled and stretched into a stripe to be granulated. The resulting PBT composite material has an excellent heat resistance and a good surface gloss and is suitable for manufacturing a high heat-resistant and high gloss vehicle mirror.

Abstract: A polyurethane adhesive and a mixture used for manufacturing a plastic athletic track are provided. The polyurethane adhesive includes a urethane pre-polymer which is formed by a reaction between an isocyanate and a polyol. The polyol is selected from the group consisting of polyether polyol and polybutadiene polyol, and a number average molecular weight of the polyol is between 1,000 g/mole and 6,000 g/mole. Based on the total weight of the polyurethane adhesive, a content of the urethane pre-polymer is between 80 wt % and 99.5 wt %, and a viscosity of the polyurethane adhesive is between 1,000 cps and 3,000 cps under an environmental temperature of between 15° C. and 40° C.

Abstract: A use of a low specific gravity PET composite material that is suitable for manufacturing a tableware article by injection molding is provided. The tableware article provides a balance between aesthetic appearance and food safety and can be used in place of melamine tableware. The low specific gravity PET composite material includes 66.5-96.3 wt % of PET, 0-20 wt % of PBT, 3-10 wt % of an inorganic filler, 0.1-0.5 wt % of an antioxidant, 0.1-1 wt % of a processing aid, and 0.5-2 wt % of a nucleating agent, and the total amount of all components is 100 wt %.

Abstract: An extruder and an LFT extrusion member manufactured thereby, and the extruder uses a long fiber thermoplastic (LFT) as a raw material to produce LFT extrusion members such as LFT sheets, pipes and profiles by a continuous extrusion molding process. The structural improvement of the extruder screw, including the screw body having three different thread groove deep sections, in sequence, a feed section, a compression section and a metering section, so that the LFT extrusion member produced by the extruder has high strength, high stiffness, high dimensional stability, low warpage and resistance to creep.

Abstract: A polypropylene composition provided with lightweight, highly tough and highly rigid as well as having a specific weight of 1.0-1.05 is made of a polypropylene resin, inorganic powder, a toughener, a coupling agent, a compatibilizer and an anti-oxidant; a method of manufacturing the composition involves grafting the inorganic powder onto the polypropylene resin and the coupling agent to form a masterbatch, and mixing the masterbatch with the other additives to enhance bonding ability of the inorganic powder inside the polypropylene composition to endow the composite with good toughness, rigidity and mobility, and reducing undesirable dust.