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Resin composition and molded article made of the same

A resin composition and resin technology, applied in the field of resin compositions, can solve the problems of inability to satisfy the formability, impaired retention stability, impaired visual recognition, etc., and achieve less reduction in flow length, improved visual recognition, and improved visual recognition. The effect of electromagnetic wave barrier properties

Inactive Publication Date: 2012-10-17
UNITIKA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyarylate resins have the following problems: due to their high melt viscosity, their fluidity during molding is poor, and their moldability is not necessarily good.
However, in the resin composition formed by polyarylate resin and polycarbonate resin described in Japanese Patent Application Publication No. Showa 50-027061 and Japanese Patent Application Publication No. Showa 58-083050, due to poor fluidity during molding, Therefore, sometimes the required formability cannot be satisfied
[0005] In addition, for the resin compositions described in Japanese Patent Application Publication No. Showa 50-027061 and Japanese Patent Application Publication No. Showa 58-083050, if a fluidity modifier is used to improve the fluidity, the visibility will be affected. damage, or impaired retention stability
[0006] In view of the present situation as described above, resin compositions that can sufficiently improve moldability (fluidity) while maintaining good mechanical properties and heat resistance of polyarylate resins have been expected. , There is no bad phenomenon such as poor visual recognition observed when the fluidity modifier is contained in the past

Method used

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  • Resin composition and molded article made of the same
  • Resin composition and molded article made of the same
  • Resin composition and molded article made of the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0248] With the content ratio described in Table 1, the polyarylate resin (A), polycarbonate resin (B), and acrylonitrile resin (C) were set to a total amount of 3 kg for dry blending. Afterwards, using a weight loss compensation type continuous quantitative supply device (manufactured by Kubota Corporation, trade name "CE-W-1"), to a twin-screw extruder (manufactured by Toshiba Machinery Co., Ltd., trade name) with a screw diameter of 26 mm at the vent portion Name "TEM26SS") main supply port supply. Then, in the extruder, set the barrel temperature to 320°C, the exhaust port decompression degree to -0.099MPa (gauge pressure), and carry out melt kneading at a discharge rate of 20kg / h and a screw speed of 300rpm . Next, the resin composition pulled out from the mold into strips was cooled and solidified in a warm bath, and cut with a pelletizer. Then, hot air drying was performed at 120° C. to obtain a granular resin composition. In addition, in Example 1, polycarbonate res...

Embodiment 2～18

[0254] Except having used the composition described in Table 1, it carried out similarly to Example 1, obtained the pellet of the resin composition, and implemented evaluation. Table 1 shows the evaluation results.

Embodiment 19～22 and comparative example 19～22

[0260] According to the combination shown in Table 3, polyarylate resin (A), polycarbonate resin (B), acrylonitrile resin (C), spherical graphite as an additive, carbon black, and an oxide layer were coated on the surface of barium sulfate. Either one of the powders of tin and antimony oxide is dry-blended. Thereafter, melt kneading was performed in the same manner as in Example 1. During the melt-kneading process, carbon fibers and glass fibers were supplied from a side feeder to obtain the compositions shown in Table 3. Using the obtained granular resin composition, evaluation was implemented according to the said evaluation method. The evaluation results are described in Table 3.

[0261] table 3

[0262]

[0263] As can be seen from Table 1, the resin compositions obtained in Examples 1 to 6, 8, 12, 13, 15, and 17 have excellent heat resistance, mechanical properties, thickness dependence during molding, retention stability during molding, and water absorption charac...

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Abstract

A resin composition comprises a polyarylate resin (A), a polycarbonate resin (B) and an acrylonitrile-styrene copolymer (C), wherein the mass proportions of the components simultaneously satisfy the following condition (I) and the following formula (II): a mass proportion of (A) is 30% by mass or more (I); (C) / [(A)+(B)+(C)]=5 / 100 to 30 / 100 (II).

Description

technical field [0001] This invention relates to resin compositions comprising polyarylate resins and acrylonitrile-styrene copolymers. In addition, it relates to a resin composition containing a polyarylate resin, a polycarbonate resin, and an acrylonitrile-styrene copolymer. Background technique [0002] Polyarylate resins composed of bisphenols and aromatic carboxylic acids are well known as engineering plastics. Since polyarylate resins are excellent in heat resistance, mechanical properties, and transparency, molded articles made of polyarylate resins are widely used in fields such as electrics, electronics, automobiles, and machinery. However, polyarylate resins have problems in that their flowability during molding is poor due to their high melt viscosity, and their moldability is not necessarily good. [0003] As an attempt to improve moldability while maintaining the mechanical properties and heat resistance of polyarylate resins, it is disclosed in Japanese Paten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/03C08L69/00C08L25/12
CPCC08L69/00C08L25/12C08L67/02
Inventor 西條健人上川泰生
Owner UNITIKA LTD