Metal member-polyarylene sulfide resin member complex and production method therefor

Patent metadata

Field	Value
Publication number	US-12409589-B2
Application number	US-202218279106-A
Country	US
Kind code	B2
Filing date	Feb 8, 2022
Priority date	Mar 17, 2021
Publication date	Sep 9, 2025
Grant date	Sep 9, 2025

Abstract

A metal member—polyarylene sulfide resin member complex superior in airtightness between the metal member and the polyarylene sulfide (PAS) resin member and a production method therefor, in which the complex comprises a metal member and a PAS member combined together into a one-piece shaped article by injection molding and satisfies conditions 1) and 2) as described, and the PAS resin member contains a PAS resin and a modified ethylene copolymer.

First claim

The invention claimed is:

1. A metal member-polyarylene sulfide resin member complex comprising a metal member and a polyarylene sulfide resin member combined together into a one-piece shaped article by injection molding, wherein (1) and (2) below are satisfied:
(1) arithmetic mean roughness (Ra1), maximum height roughness (Rz1) and root mean square height (Rq1) of a surface of the metal member in a measurement according to JIS B 0601-2001 performed using an atomic force microscope set to a field of view range of 2 μm or a confocal laser scanning microscope,
and arithmetic mean roughness (Ra2), maximum height roughness (Rz2) and root mean square height (Rq2) of a surface of the polyarylene sulfide resin member in a measurement according to JIS B 0601-2001 performed using an atomic force microscope set to a field of view range of 2 μm or a confocal laser scanning microscope,
satisfy a relationship or relationships of |(Ra1−Ra2)|/(Ra1+Ra2)≤0.2, |(Rz1−Rz2)|/(Rz1+Rz2)≤0.2 and/or |(Rq1−Rq2)|/(Rq1+Rq2)≤0.2, and
(2) the polyarylene sulfide resin member contains a polyarylene sulfide resin and a modified ethylene copolymer.

2. The metal member-polyarylene sulfide resin member complex according to claim 1 , wherein the modified ethylene copolymer is at least one modified ethylene copolymers selected from the group consisting of ethylene-α,β-unsaturated alkyl carboxylate-maleic anhydride copolymers, ethylene-α,β-unsaturated glycidyl carboxylate copolymers, ethylene-α,β-unsaturated glycidyl carboxylate-vinyl acetate copolymers, ethylene-α,β-unsaturated glycidyl carboxylate-α,β-unsaturated alkyl carboxylate copolymers and maleic anhydride-grafted ethylene-α-olefin copolymers.

3. The metal member-polyarylene sulfide resin member complex according to claim 1 , wherein (3) below is further satisfied:
(3) the maximum height roughness (Rz1) of the surface of the metal member in a measurement according to JIS B 0601-2001 performed using an atomic force microscope set to a field of view range of 2 μm is 800 nm or less.

4. The metal member-polyarylene sulfide resin member complex according to claim 1 , wherein the metal member is a metal member having a chemically treated surface.

5. The metal member-polyarylene sulfide resin member complex according to claim 1 , wherein (4) below is further satisfied:
(4) the maximum height roughness (Rz1) of the surface of the metal member in a measurement according to JIS B 0601-2001 performed using a confocal laser scanning microscope exceeds 800 nm.

6. The metal member-polyarylene sulfide resin member complex according to claim 5 , wherein the metal member is a metal member having a physically treated surface.

7. A production method for the metal member-polyarylene sulfide resin member complex as defined in claim 1 , the method comprising installing a metal member in a mold and injecting and filling a molten polyarylene sulfide resin into the mold to produce a one-piece insert-injected complex in which the metal member and a polyarylene sulfide resin member have been directly combined together.

8. The production method according to claim 7 for a metal member-polyarylene sulfide resin member complex, wherein insert injection molding is performed under conditions of a mold temperature of 130° C. or above and a mold hold pressure of 1 MPa or more.

9. A container comprising the metal member-polyarylene sulfide resin member complex as defined in claim 1 as a lid thereof.

10. The container according to claim 9 , wherein the container is a highly airtight container.

Assignees

• Tosoh Corp

Inventors

• Harunari Takeshi
• Yamano Naoki

Classifications

• C08L23/0869

  with unsaturated acids, e.g. [meth]acrylic acid; with unsaturated esters, e.g. [meth]acrylic acid esters · CPC title

• C08G75/0254

  using metal sulfides · CPC title

• B29L2031/712

  Containers; Packaging elements or accessories, Packages (closures therefor B29L2031/56; ink or toner cartridges B29L2031/7678; squeeze tubes B29L2023/20; suitcases B29L2031/7418) · CPC title

• B29L2031/30

  Vehicles, e.g. ships or aircraft, or body parts thereof {(vanes or blades B29L2031/08, air bags B29L2022/027)} · CPC title

• B29K2905/02

  Aluminium · CPC title