Polyamide/Polyphenylene Ether Resin Composition, and Vehicle Molded Product Prepared Therefrom
Active Publication Date: 2019-01-17
LOTTE ADVANCED MATERIALS CO LTD
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Benefits of technology
[0032]The polyamide/polyphenylene ether resin composition according to the present invention exhibits good adhesion to urethane paints, melamine paints and acrylic paints and can be advantageously applied to an electrostatic painting process using various kinds of paints.
[0033]In addition, the polyamide/polyphenylene ether resin composition according to the present invention exhibits high impact resistance and thus can be advantageously applied to components requiring high impact strength, for example, automobile fender components.
[0034]FIG. 1 is a flowchart illustrating a method of preparing a polyamide/polyphenylene ether resin composition according to the present invention.
[0035]FIG. 2 is a view of an extruder used in the preparation method according to the present invention.
[0036]Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0037]As a result of repeated studies to develop a polyamide/polyphenylene ether resin composition having good adhesion to various paints while exhibiting high impact resistance, the present inventors have found that such a polyamide/polyphenylene ether resin composition can be prepared by reacting a polyphenylene ether, a compatibilizer, a polyamide and a polyamine in a specific sequence, and completed the present invention.
Problems solved by technology
However, despite good adhesion to urethane paints used in on-line electrostatic painting for automobiles, such a typical conductive polyamide/polyphenylene ether resin exhibits insufficient adhesion to melamine or acrylic paints, thereby limiting the kind of available paint.
However, this technique does not secure sufficient improvement in adhesion to melamine paints or acrylic paints, despite improvement in adhesion to acrylic urethane paints.
However, since the resin composition of this patent is prepared by simultaneously melting and mixing the polyamine, the polyamide, the polyphenylene ether, and a compatibilizer, the polyamine reacts with the compatibilizer instead of the polyamide to reduce the content of the polyphenylene ether-compatibilizer-polyamide copolymer in the resin composition, thereby reducing impact resistance.
As a result, the resin composition of this patent is not suitable for automobile fender components.
Method used
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EXAMPLES 1 TO 16 AND COMPARATIVE EXAMPLES 1 TO 5
[0149]Resin compositions were prepared in pellet form by supplying components as listed in Tables 1 to 4 to a twin-screw extruder (KZW-58, Technovel Co.), followed by extrusion and kneading. The twin-screw extruder is composed of thirteen barrels, in which feeding ports are provided to the first, sixth and eighth barrels (hereinafter referred to as “Barrel 1”, “Barrel 6”, and “Barrel 8”, respectively); vacuum vents are provided to the fifth and eleventh barrels (hereinafter referred to as “Barrel 5” and “Barrel 11”, respectively); liquid feeding nozzles are provided to the sixth, eighth, and twelfth barrels (hereinafter referred to as “Barrel 6”, “Barrel 8”, and “Barrel 12”, respectively); and kneading screw elements are provided to the third, fourth, seventh, tenth, and twelfth barrels (hereinafter referred to as “Barrel 3”, “Barrel 4”, “Barrel 7”, “Barrel 10” and “Barrel 12”, respectively).
[0150]Barrels 2 to 4 were set to have a cylinde
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Abstract
The present invention relates to a polyamide/polyphenylene ether resin composition containing: a base resin comprising polyphenylene ether, a polyamide and an impact modifier; a compatibilizer; and a polyamine, and to: a polyamide/polyphenylene ether resin composition having a notched Izod impact strength of about 12 kJ/m2 or more when measured at 23° C. according to the ISO 180 standard, and a number of checkerboard lattices, in which peeling off occurs, being about 5% or less of the total number of checkerboard lattices in a 1 mm-gap checkerboard pattern test for testing adhesion to acrylic paints and a melamine-based paints according to the JIS K5600-5-6 standard; and a preparation method therefor.
Description
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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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