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Thermoplastic resin composition, and molded product using same

A thermoplastic resin and composition technology, applied in the field of thermoplastic resin composition and its molded products, can solve problems such as flow marks or welding lines, and achieve excellent impact resistance

Active Publication Date: 2015-03-25
LOTTE ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is disclosed in Japanese Patent Publications 2001-262003 and 2007-137963, but the metal-like texture did not appear in actual experiments, and there are problems with flow marks or weld lines in the injection molding process
Likewise, Japanese Patent Laid-Open No. 1995-196901 imparts a metal-like texture to plastic resins by adding a glazing agent obtained through a stamping process and having an average shape ratio (thickness / average particle diameter) of 1 / 100 to 1 / 8, But this technique has limitations such as forming weld lines

Method used

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  • Thermoplastic resin composition, and molded product using same
  • Thermoplastic resin composition, and molded product using same
  • Thermoplastic resin composition, and molded product using same

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1 to 9 and comparative example 1 to 6

[0098] The thermoplastic resin compositions of Experimental Examples 1 to 9 and Comparative Examples 1 to 6 were prepared according to the compositions described in Table 1 using the above-mentioned components in Tables 1 and 2 below.

[0099] For the manufacturing method, the compositions shown in Tables 1 and 2 below are mixed components, and the mixture is extruded with a typical twin-screw extruder at a temperature range of 180 to 240° C., and the extruded material is in the form of pellets form of manufacture.

experiment example

[0101] The manufactured pellets were dried at 80°C for 4 hours, and then material samples were manufactured by using an injection molding machine capable of molding 6 oz. The injection molding machine was set at a barrel temperature of 210-230°C, a molding temperature of 100°C, and a molding cycle of 30 seconds. and injection molded with ASTM dumbbell-shaped specimens. The properties of the produced raw material samples were measured by the following methods, and the measurement results are shown in Table 12 below.

[0102] 1) IZOD impact strength: Measured according to ASTM D256 (sample thickness 1 / 8").

[0103] 2) Injection molding appearance: Injection was performed by using a mold having two doors to form a welding line, and based on the criteria shown in Table 2 below, the observed appearance results of the injection molding material are shown.

[0104] Table 1

[0105]

[0106] Table 2

[0107]

Flow marks

Metallic texture

welding wire

...

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Abstract

Provided are a thermoplastic resin composition including a thermoplastic resin and an amorphous sheet-shaped metal particle having a ratio of thickness relative to long diameter of about 1:20 to about 1:1, and a molded product using the same.

Description

technical field [0001] The present disclosure relates to a thermoplastic resin composition and a molded article thereof having excellent appearance. Background technique [0002] Recently, plastic case products in different colors are popular for electronic parts, automobile parts, etc., and plastic case products with high-quality touch. [0003] Plastic housing products usually contain plastic resin and metal, and give the resin appearance a metal-like texture. This is disclosed in Japanese Patent Laid-Open Nos. 2001-262003 and 2007-137963, but the metal-like texture has not appeared in actual experiments, and there are problems of flow marks or welding lines in the injection molding process. Likewise, Japanese Patent Laid-Open No. 1995-196901 imparts a metal-like texture to plastic resins by adding a glazing agent that is obtained through a stamping process and has an average shape ratio (thickness / average particle diameter) of 1 / 100 to 1 / 8, But this technique has limita...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K3/08C08K7/02C08K3/40C08L69/00C08L51/04
CPCC08L101/00C08J5/00C08L69/00C08K7/02C08L55/02C08K3/40C08K3/08
Inventor 李炯卓河斗汉赵真卿权宁喆
Owner LOTTE ADVANCED MATERIALS CO LTD