High-performance engineering plastic/polyester type TPU (thermoplastic polyurethane) alloy material and preparation method thereof

Abstract

The invention discloses a high-performance engineering plastic / polyester type TPU (thermoplastic polyurethane) alloy material comprising the following components in parts by mass: 15 to 25 parts of polyester type TPU, 30 to 60 parts of long glass fibers, 20 to 45 parts of engineering plastics, 3 to 6 parts of compatilizer, 0.4 to 0.6 part of fluidity aid, 0.8 to 1.2 parts of chain extender and 0.4 to 0.6 part of antioxidant. According to the alloy material disclosed by the invention, the fluidity of the engineering plastics (AS (acrylonitrile styrene), PS (polystyrene), ABS (acrylonitrile butadiene styrene), PC (polycarbonate), PBT (polybutylene terephthalate) or PMMA (polymethyl methacrylate)) is improved, and the problem that resin has low probability of infiltrating glass fibers is solved by adopting the high-fluidity polyester type TPU; the 'floating fiber' phenomenon of the glass fibers can be eliminated and the interfacial strength of the glass fibers and the resin can be improved by adding the fluidity modifier and the compatilizer; the defect of reduction of the molecular weight of the TPU in the processing process is overcome by adding the hydroxy-containing chain extender.

Description

technical field [0001] The invention relates to the field of material science, in particular to a polymer material and a preparation method thereof. Background technique [0002] The engineering plastics selected by the present invention are AS, PS, ABS, PC, PBT, PMMA, all of which have good rigidity. It is difficult for these materials to obtain high-strength and high-toughness composite materials. They are all modified by adding glass fiber reinforced grafts containing elastomers, but their toughness is not greatly improved. For example: AS or PC is added The notched impact strength of the glass fiber is not as good as that of the raw material. At present, the use of long fiber reinforced technology can not only reduce the cost of materials, but also greatly improve the mechanical properties of materials and the phenomenon of "floating fibers"; but ordinary TPU has high viscosity, low melt index, poor fluidity and low hardness. , so that the preparation of long glass fib...

AI Technical Summary

Problems solved by technology

At present, the use of long fiber reinforced technology can not only reduce the cost of materials, but also greatly improve the mechanical properties of materials and the phenomenon of "floating fibers"; but ordinary TPU has high viscosity, low melt index, poor fluidity and low hardness. , so that the preparation of long glass fiber reinforced TPU is limited

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