Resin composition and molded body formed from resin composition

A resin composition and molding technology, applied in the field of moldings, can solve problems such as changing physical properties, and achieve the effects of simple manufacturing, excellent mechanical properties, and excellent chemical properties

Inactive Publication Date: 2016-11-16
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, in the blending of these block polymers and vinylidene fluoride resins, in most cases, the mechanical and thermal properties of vinylidene fluoride resins have been improved by introducing domains with different chemical properties, and there has been no control Example of changing physical properties by crystal size

Method used

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  • Resin composition and molded body formed from resin composition
  • Resin composition and molded body formed from resin composition
  • Resin composition and molded body formed from resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0182] Hereinafter, although an Example demonstrates this invention, this invention is not limited to these Examples.

[0183] In addition, "part" and "%" in an Example represent "part by mass" and "% by mass".

[0184] [Evaluation method]

[0185] Each evaluation in an Example and a comparative example was implemented by the following method.

[0186] (Evaluation method of resin composition)

[0187] (1) Determination of molecular weight and molecular weight distribution

[0188] The mass average molecular weight (Mw) and the number average molecular weight (Mn) were measured using gel permeation chromatography (GPC) (manufactured by TOSOH Corporation, trade name: HLC-8220) under the following conditions.

[0189] Column: Connect TSK GUARD COLUMN SUPER HZ-L (4.6×35mm) and 2 pieces of TSK-GELSUPER HZM-N (6.0×150mm) in series

[0190] Eluent: THF

[0191] Measuring temperature: 40℃

[0192] Flow rate: 0.6mL / min

[0193] In addition, Mw and Mn were calculated|required using...

Embodiment 2

[0263] A granular molding material was prepared in the same manner as in Example 1 except that the blending amount of PVDF was changed to 30 parts and the blending amount of the copolymer (Y-2) was changed to 70 parts.

[0264] The melt mass flow rate of the obtained granular molding material was measured, and compared with the measured values ​​of the polymer X and the copolymer (Y-2) alone. In addition, the crystal melting enthalpy of the block of the molding material (resin composition) was measured. The results are shown in Table 3 and figure 1 .

[0265]

[0266] A granular molding material was prepared in the same manner as in Example 1 except that 70 parts of commercially available PMMA (manufactured by Mitsubishi Rayon Corporation, trade name: ACRYPET VH001) was used instead of the copolymer (Y-2).

[0267] The melt mass flow rate of the obtained granular molding material was measured and compared with the individual measured values ​​for polymer X and PMMA. In ad...

Embodiment 3

[0274] [Preparation of resin composition]

[0275] 40 parts of PVDF (manufactured by Arkema Co., Ltd., trade name: kynar720) as polymer X and 60 parts of copolymer (Y-1) produced in Production Example 3 as polymer Y were preliminarily dried at 80° C. overnight, After dry blending, it was extruded at a maximum temperature of 220° C. using a φ30 mm twin-screw kneading extruder (manufactured by Werner & Pfleiderer) to obtain a granular molding material (resin composition).

[0276] [Production of moldings]

[0277] Using the molding material obtained as described above, injection molding was performed with an injection molding machine (manufactured by Toshiba Corporation, trade name: IS100) at a resin temperature of 220° C. and a mold temperature of 40° C. to obtain a molded body with a thickness of 3 mm.

[0278] The crystalline melting enthalpy, total light transmittance (TT), haze (HZ), elastic modulus, elongation at break, and Charpy impact value of the obtained molded body ...

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Abstract

A resin composition which contains from 5% by mass to 65% by mass (inclusive) of a polymer (X) described below and from 35% by mass to 95% by mass (inclusive) of a polymer (Y) described below. Alternatively, a resin composition which contains more than 65% by mass but 85% by mass or less of a polymer (X) described below and 15% by mass or more but less than 35% by mass of a polymer (Y) described below, wherein a domain (y1) described below or a domain (y2) described below contains a macromonomer unit. Polymer (X): a vinylidene fluoride resin Polymer (Y): a copolymer having a domain (y1) that is compatible with the polymer (X) and a domain (y2) that is incompatible with the polymer (X)

Description

technical field [0001] The present invention relates to a resin composition and a molded body composed of the resin composition. [0002] This application claims priority based on Japanese Patent Application No. 2014-061682 for which it applied in Japan on March 25, 2014, and uses the content here. Background technique [0003] Fluororesins are crystalline resins that exhibit excellent properties such as weather resistance, flame retardancy, heat resistance, antifouling properties, smoothness, and chemical resistance, and are particularly suitable as materials for articles exposed to outdoor environments. Among fluororesins, especially vinylidene fluoride-based resins (hereinafter referred to as "PVDF") are thermoplastic resins suitable for molding because of a large difference between melting point and decomposition temperature. [0004] However, since PVDF crystals tend to grow to a size larger than the wavelength of visible light and scatter part of visible light, the tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/00C08J5/00C08L27/16C08L53/00C08L55/00
CPCC08L27/16C08L101/00C08L55/005C08L53/00
Inventor 井川雅资细川宏冈本英子藤山恒祐
Owner MITSUBISHI CHEM CORP
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