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Polyamide resin composition and molded body molded with the same

A technology of polyamide resin and composition, which is applied in the field of polyamide resin composition, can solve the problems of poor productivity and high cost, and achieve the effects of excellent brightness and excellent weather resistance

Active Publication Date: 2014-04-02
UNITIKA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this metal coating has problems in terms of working environment due to the use of organic solvents, and also has problems of poor productivity and high cost.

Method used

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  • Polyamide resin composition and molded body molded with the same
  • Polyamide resin composition and molded body molded with the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0169] To 80 parts by mass of ε-caprolactone and 20 parts by mass of 11-aminoundecanoic acid, add 0.4 parts by mass of phosphorous acid, 5 parts by mass of swelling phyllosilicate (B-1), and 5 parts by mass of water , after stirring at 80°C for 1 hour, stirring at 260°C and 0.7MPa for 1 hour, and then stirring at 260°C and normal pressure for 1 hour to polymerize and obtain a swellable phyllosilicate containing 5.2% by mass ( B-1) Polyamide resin (P-1).

[0170] Mix the obtained polyamide resin (P-1) containing swellable phyllosilicate with metallic pigment (C-1) according to the compounding amount shown in Table 1, and put it into the main hopper of the single-screw extruder , melt-kneaded, extruded from a die in the shape of a strand, cooled, and pelletized to obtain polyamide resin composition pellets. Melt-kneading was performed at a resin temperature of 260° C., a screw rotation of 200 rpm, and a discharge rate of 30 kg / h.

[0171] Using the obtained polyamide resin com...

Embodiment 2～24、 comparative example 1～9

[0177] Except having followed the charged composition described in Table 1, swelling phyllosilicate-containing polyamide resins (P-2) to (P-12) were obtained in the same manner as in Example 1. Next, the polyamide resin composition pellets were obtained in the same manner as in Example 1 except that the respective components were compounded in the compounding amounts described in Table 1, and injection molding was further performed. Various evaluations were performed using the obtained plate-shaped molded body. The results are shown in Table 2. However, in Example 11, polyamide resin composition pellets were produced using a twin-screw extruder instead of a single-screw extruder.

[0178]In Examples 1 to 24, each component constituting the resin composition was within the range prescribed by the present invention, so the obtained molded body was excellent in welding strength and brightness. In the example where the copolymer was used as the polyamide resin (A), the welding s...

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Abstract

The present invention relates to a polyamide resin composition and molded body molded with the same. The polyamide resin composition can mold the polyamide resin molded body excellent in weld strength and luminance, having rigidity. The polyamide resin composition is characterized that 100 parts by mass of polyamide resin (A), 1-10 parts by mass of swelling sheet silicates (B), and a polyamide resin composition which is a polyamide resin composition containing 0.5-5 parts by mass of metallic pigment (C), and is characterized by polyamide resin (A) comprising 2 or more type of aminocarboxylic acid units.

Description

technical field [0001] The present invention relates to a polyamide resin composition capable of being molded into a polyamide resin molded article having rigidity and excellent weld strength and brightness. Background technique [0002] Molded articles molded from thermoplastic resins such as polyamide resins are generally used for engine covers of automobiles and interior and exterior trim covers of home appliances. [0003] For the appearance of such a resin molded article, a metallic color such as steel or aluminum alloy may be required. Especially in recent years, the demand for the aesthetic appearance of the resin molded article has increased, and the appearance of the resin molded article has been required not only to have a metallic tone but also to suppress the highlight in addition to having a glossy feeling. In addition, various types of metallic tones ranging from silver gray to slightly off-white off-white are also required. [0004] In order to satisfy the a...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08K7/00C08K3/34
CPCC08K3/34C08K3/346C08K7/00C08L77/02
Inventor 迎弘文祢宜行成正木辰典田中祐子
Owner UNITIKA LTD
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