Glass fiber-reinforced polyamide resin composition, and molded article for vehicle interior or vehicle exterior comprising same
A technology of polyamide resin and glass fiber, which is applied in the field of glass fiber reinforced polyamide resin composition, can solve the problems that the appearance and weather resistance of molded products cannot be highly satisfied, and achieve the effect of excellent weather resistance
Pending Publication Date: 2021-09-24
TOYOBO CO LTD
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- Application Information
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Problems solved by technology
However, although the glass fiber-reinforced polyamide resin composition proposed in Patent Document 4 has improved weather resistance to a certain extent, it may not be able to satisfy the appearance and weather resistance of molded products to a high degree.
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1～9、 comparative example 1～4
[0093] According to the content shown in Table 1, components other than mica (D) and glass fiber (E) were dry-blended using a vented twin-screw extruder "STS35mm" manufactured by Coperion Co., Ltd. (The barrel consists of 12 sections), the barrel temperature is 280°C, the screw speed is 250rpm, and the extrusion conditions are melted and mixed, and then the mica (D) and glass fiber are supplied in the way of side feeding for melting and mixing . The strands extruded from the extruder were rapidly cooled and made into pellets using a strand cutter. The obtained pellets were dried at 100° C. for 12 hours, and a textured plate was molded at a cylinder temperature of 285° C. and a mold temperature of 90° C. using an injection molding machine (manufactured by Toshiba Machine Co., Ltd., IS80) for evaluation. The evaluation results are shown in Table 1.
[0094]
[0095] According to Table 1, the test pieces of Examples 1 to 9 have a small color difference ΔE before and after th...
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Abstract
The present invention provides a glass fiber-reinforced polyamide resin composition that comprises a crystalline aliphatic polyamide resin (A), an amorphous polyamide resin (B), an acrylic resin (C), mica (D), glass fibers (E) and a carbon black masterbatch (F) at a mass ratio of (17-30):(10-16):(3-8):(10-25):(20-50):(1-8), wherein the mass ratio (B) / (A) of the (A) and (B) components is 0.50-0.61, and a copper compound is included at a proportion of 0.005-1.0 parts by mass if the total content of the (A)-(F) components is taken as 100 parts by mass. The glass fiber-reinforced polyamide resin composition is capable of forming a molded article that has a significantly superior surface appearance (textured surface uniformity) and has weather resistance such that the superior surface appearance can be maintained even after a weathering test.
Description
technical field [0001] The present invention relates to a glass fiber-reinforced polyamide resin composition capable of obtaining a molded article having an extremely excellent appearance of the molded article, and the molded article has an excellent appearance even when it is used outdoors, especially when exposed to rainfall. weather resistance. Background technique [0002] Polyamide resins are widely used in automobiles, electrical appliances, and electronic products due to their excellent mechanical properties, thermal properties, and chemical resistance. In addition, the reinforced polyamide resin composition obtained by mixing polyamide resin and glass fiber has greatly improved mechanical properties, heat resistance, and chemical resistance. From the perspective of weight reduction and process rationalization, etc. , studies on the use of reinforced polyamide resin compositions as metal substitute materials have been earnestly focused. [0003] Reinforced polyamide...
Claims
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IPC IPC(8): C08J5/08C08J3/22C08K3/04C08K3/105C08K3/34C08K7/14C08L33/04C08L77/00
CPCC08L77/02C08L77/06C08J5/043C08J2377/02C08J2377/06C08K3/346C08K7/14C08K3/04C08K3/105C08K2003/085C08K3/16C08K3/34C08L23/06C08L33/12C08L77/00C08L33/00C08J5/10C08J3/20C08L2205/02C08L2205/03
Inventor 吉村信宏梅木亮
Owner TOYOBO CO LTD