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Polyarylene sulfide resin composition and fluid pipe material

A technology of resin composition and polyarylene sulfide, which is applied in the direction of pipes/pipe joints/fittings, hoses, pipes, etc., which can solve the problems of reduced heat resistance, weakened joint force of formed pipelines, increased creep deformation, etc. , to achieve the effect of inhibiting breakage, small elongation and high toughness

Inactive Publication Date: 2011-10-19
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, as the amount of thermoplastic elastomer added increases, the resin composition is given flexibility and stickiness, and although damage and cracking due to freezing can be improved, there is a problem that heat resistance decreases.
That is, the addition of a thermoplastic elastomer also imparts viscosity, so there is a problem that creep deformation increases as the amount of addition increases
In particular, creep deformation is further increased in the high-temperature region, so as a fluid pipe through which a high-temperature (approximately 70°C or higher) fluid flows under high pressure, such as a pipe member for a hot water device, creep deformation begins to follow the external force over time , so that the material itself deforms and there is a problem of weakening the joint force that constitutes the pipeline

Method used

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  • Polyarylene sulfide resin composition and fluid pipe material
  • Polyarylene sulfide resin composition and fluid pipe material
  • Polyarylene sulfide resin composition and fluid pipe material

Examples

Experimental program
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preparation example Construction

[0060] As the preparation method of the PAS resin composition of the present invention, for example, the following method can be mentioned: PAS resin (A), metal particles (B) containing at least one metal species selected from copper, nickel and zinc, and thermoplastic elastomer The body (C) is mixed in advance with a Henschel mixer or a drum mixer, and then supplied to a single-screw or twin-screw extrusion kneader, etc., and kneaded at 200°C to 360°C, Then pelletized to obtain a PAS resin composition. It is particularly preferable to use a twin-screw extrusion kneader rotating in the same direction provided with kneading discs for kneading. In addition, after granulation, processing such as annealing treatment, UV irradiation, and plasma irradiation may be performed.

[0061] The fluid piping member of the present invention obtained by molding the aforementioned PAS resin composition can be used in a wide temperature range with little deformation, and thus can be used for v...

Embodiment

[0067] Hereinafter, the present invention will be further described with reference to examples. In addition, the peak molecular weight and melt viscosity of the PAS resin obtained in the following manufacture example were measured by the following method.

[0068] [Determination of peak molecular weight]

[0069] The peak molecular weight of the PAS resin was measured by gel permeation chromatography using six types of monodisperse polystyrenes for calibration under the following measurement conditions.

[0070] Apparatus: Ultra-high temperature polymer molecular weight distribution measurement apparatus (manufactured by Senshu Scientific co., ltd. "SSC-7000")

[0071] Column: UT-805L (manufactured by Showa Denko Co., Ltd.)

[0072] Column temperature: 210°C

[0073] Solvent: 1-Chlorinated Naphthalene

[0074] Measuring method: UV detector (360nm)

[0075] [Measurement of Melt Viscosity]

[0076] Using a capillary rheometer, at a temperature of 300°C and a shear rate of ...

manufacture example 1

[0077] (Production example 1) Production of PAS resin (A) (PPS-1)

[0078]At room temperature, add 1838kg (12.5 kilomoles) of p-dichloro Benzene (hereinafter, referred to as "p-DCB" for short.), 4958kg (50 kilomoles) of N-methylpyrrolidone (hereinafter, referred to as "NMP" for short.), 90kg (5.0 kilomoles) of water, were stirred in a nitrogen atmosphere It takes 20 minutes to raise the temperature to 100°C, close the system, and then raise the temperature to 220°C in 40 minutes. At this temperature, the internal pressure is controlled to 0.22MPa, and 1500kg Na is added dropwise in 3 hours. 2 S·xH 2 O, 225kgNaSH·yH 2 O, the mixed solution of 425kg water (Na 2 S: 11.4 kilomoles, NaSH: 3.2 kilomoles, 50.3% by mass of water). During the dropwise addition, the dehydration operation was carried out simultaneously, and the water was removed from the system, and the p-DCB distilled out together with the water was continuously returned to the autoclave. It should be noted that th...

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Abstract

Disclosed is a polyarylene sulfide resin composition containing 100 parts by mass of a polyarylene sulfide resin (A), 0.1-8 parts by mass of a metal fine particulate (B) containing at least one metal type selected from a group comprised of copper, nickel and zinc, and 0.1-5 parts by mass of a thermoplastic elastomer (C); further disclosed is a fluid pipe material obtained by forming said resin composition. This fluid pipe material has high hardness at low temperatures, suppresses damage and rupturing of the pipe due to freezing, and resists creep deformation at high temperatures, and thus is useful as a water supply pipe, a water heater pipe, and the like in cold climates.

Description

technical field [0001] The present invention relates to a polyarylene sulfide resin composition having high toughness at low temperature and little deformation at high temperature. Also, it relates to fluid piping members, especially pipe joints, useful for conveying fluids such as various organic / inorganic fluids, various solvents, fuels, various gases, liquefied gases, and other various polymers Fluids such as raw materials, intermediates, and products during production, or fluids that mainly contain water, such as drinking water, hot water passing through a water heater, floor heating systems that use hot water, fertilizer preparation water supply systems such as factory grown vegetables, etc. Wait. Background technique [0002] In the past, metal was used for piping members, but in recent years, the demand for plastic piping members such as high-density polyethylene and cross-linked polyethylene has been increasing for the purpose of cost reduction and weight reduction....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L81/02C08K3/08C08L23/00F16L11/04
CPCC08K3/08C08L9/00C08L21/00C08L23/0876C08L23/0884C08L63/00C08L81/02F16L9/12Y10T428/1355C08L2666/06
Inventor 阿部文明中濑广清相泽志文芳野泰之丸山丰中岛道也秋叶久美子
Owner DIC CORP
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