Polyarylene sulfide resin composition and fluid pipe material

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....

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

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