Polyphenylene sulfide resin composition and molded articles for automobiles manufactured using the same

Patent metadata

Field	Value
Publication number	US-2024002662-A1
Application number	US-202218079284-A
Country	US
Kind code	A1
Filing date	Dec 12, 2022
Priority date	Jun 30, 2022
Publication date	Jan 4, 2024
Grant date	—

Abstract

Disclosed is a polyphenylene sulfide resin composition for an automobile part that includes 30 to 40 parts by weight of a glass fiber, 10 to 20 parts by weight of glass bead, and 5 to 10 parts by weight of a polyolefin resin for each 100 parts by weight of a polyphenylene sulfide resin.

First claim

What is claimed is:

1 . A polyphenylene sulfide resin composition for an automobile part comprising:
30 to 40 parts by weight of a glass fiber; 10 to 20 parts by weight of glass bead; and 5 to 10 parts by weight of a polyolefin resin, for each 100 parts by weight of a polyphenylene sulfide resin.

2 . The polyphenylene sulfide resin composition of claim 1 , wherein the polyphenylene sulfide resin has a melt index in a range of 20 to 30 g/min, corresponding to a measurement of the melt index in accordance with an ISO 1133 Standard at 300° C./5 Kg.

3 . The polyphenylene sulfide resin composition of claim 1 , wherein the glass fiber has an average diameter of 10 to 11 μm and a length of 3 to 4 mm.

4 . The polyphenylene sulfide resin composition of claim 1 , wherein the glass bead has an average diameter of 1 to 45 μm.

5 . The polyphenylene sulfide resin composition of claim 1 , wherein at least one of the glass fiber and the glass bead is surface-treated with a silane coupling agent having at least one of an epoxy group and a glycidyl group.

6 . The polyphenylene sulfide resin composition of claim 5 , wherein the silane coupling agent includes at least one selected from a group consisting of
3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldiethoxysilane, 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, and 3-glycidoxypropyltriethoxysilane.

7 . The polyphenylene sulfide resin composition of claim 5 , wherein the polyolefin resin comprises a reactive group that binds to the surface-treated at least one of the glass fiber and the glass bead.

8 . The polyphenylene sulfide resin composition of claim 7 , wherein the reactive group of the polyolefin resin is selected from an epoxy group or glycidyl methacrylate.

9 . The polyphenylene sulfide resin composition of claim 1 , wherein the polyolefin resin includes at least one selected from a group consisting of polypropylene, polyethylene, polybutene, polyoctene or polyisoprene, ethylene methylacrylate, glycidyl methacrylate, and an ethylene-methylacrylate-glycidyl-methacrylate-terpolymer.

10 . The polyphenylene sulfide resin composition of claim 1 , wherein the polyolefin resin has a weight average molecular weight of 10,000 to 200,000.

11 . The polyphenylene sulfide resin composition of claim 1 , further comprising at least one additive selected from a group consisting of antioxidants, ultraviolet (UV) stabilizers, flame retardants, colorants, plasticizers, heat stabilizers, compatibilizers, lubricants, and antistatic agents.

12 . A molded article for an automobile manufactured by melt-extruding the polyphenylene sulfide resin composition of claim 1 .

13 . The molded article of claim 12 , wherein the molded article has a tensile strength in a range of 148 to 160 MPa and a weld strength in a range of 47 to 60 MPa, corresponding to respective measurements of the tensile strength and the weld strength in accordance with an ISO 527 Standard test method at 5 mm/min.

14 . The molded article of claim 12 , wherein the molded article has a dielectric breakdown strength in a range of 16 to 20 kV/mm, corresponding to a measurement of the dielectric breakdown strength in accordance with an IEC 60243-1 Standard test method.

15 . The molded article of claim 12 , wherein the molded article has a comparative tracking index (CTI) of grades 3 to 4, corresponding to a measurement of the CTI in accordance with an IEC 60112 Standard test method.

16 . The molded article of claim 12 , wherein the molded article has an elongation of 1.6 to 2%, corresponding to a measurement of the elongation in accordance with an ISO 527 Standard test method.

17 . The molded article of claim 12 , wherein the molded article has an Izod notched impact strength in a range of 7.5 to 10.0 KJ/m 2 , corresponding to a measurement of the Izod notched impact strength in accordance with an ISO 180 Standard test method at 23° C.

18 . The molded article of claim 12 , wherein the molded article has a high-speed surface impact peak force of 190 to 270 N and a break energy in a range of 1.4 to 3.0 J, corresponding to respective measurements of the high-speed surface impact peak force and the break energy in accordance with an ISO 6603 test method.

19 . The molded article of claim 12 , wherein the molded article is a terminal assembly of a driving motor.

Assignees

• Hyundai Mobis Co Ltd
• Hyundai Advanced Mat Co Ltd

Inventors

• Kang Hyoung Taek
• Lee Eun Chang
• Lee Sang Gil
• Koo Kwon Mo
• Hwang Sang Woon
• Kim Dong Ju

Classifications

• C08L81/04 Primary

  Polysulfides · CPC title

• C08L81/02 Primary

  Polythioethers; Polythioether-ethers · CPC title

• C08K2201/003

  Additives being defined by their diameter · CPC title

• C08K2201/004

  Additives being defined by their length · CPC title

• C08L101/00

  Compositions of unspecified macromolecular compounds · CPC title