Polyamide (PA) composition

Abstract

The invention provides a polyamide (PA) composition, belonging to the field of PA. The PA composition is used for solving the problems of the existing PA / ABS (Acrylonitrile-Butadiene-Styrene copolymer) alloy products that strength and toughness can not be improved simultaneously. The PA composition contains the following ingredients in percentage by weight: 55-65% of PA, 5-10% of functionalized ABS toughening agent and 25-40% of glass fibers. According to the PA composition, in the functionalized ABS toughening agent, a rubber phase and the glass fibers are dispersed into PA matrix resin, and GMA (Glycidyl Methacrylate) in functionalized ABS can react with terminal groups in PA, so that the interfacial adhesion force is increased, the interfacial adhesion for the glass fibers and a PA matrix is promoted, and the interfacial adhesion force of the glass fibers is increased, thus the prepared PA composition has relatively high strength and toughness. The PA composition provided by the invention has the advantages that the impact strength is not lower than 120J / m, the elongation at break is not lower than 3%, the tensile strength is not lower than 85MPa, and the bending strength is not lower than 5.5GPa.

Description

technical field

[0001] The invention belongs to the field of polyamides, in particular to a polyamide composition. technical background

[0002] Polyamide (PA) is a class of engineering plastics with excellent performance, which has good mechanical properties and heat resistance stability, but the toughness and impact resistance of PA have a great dependence on temperature and moisture absorption. When the amount is low, the impact strength is low, which greatly limits its use, and PA alloy materials are more suitable for high performance requirements. The blending modification of PA and ABS is one of the effective ways to overcome the above-mentioned defects of PA. The preparation of PA / ABS alloys had patent reports as early as the 1960s, but it was not until the 1980s that the Elemid series alloys researched and developed by the American Borg Warner Company were successfully applied to the outer panels of automobiles, and the industrial development and application of this...

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