Reinforcing material and resin molded article

Patent metadata

Field	Value
Publication number	US-11898017-B2
Application number	US-201816485720-A
Country	US
Kind code	B2
Filing date	Feb 14, 2018
Priority date	Feb 20, 2017
Publication date	Feb 13, 2024
Grant date	Feb 13, 2024

Abstract

A reinforcing material is disclosed that includes coated glass flakes and coated glass strands. When the total amount of a glycidyl group-including resin and aminosilane contained in the coatings of the coated glass flakes corresponds to 100% by mass, the amount of the resin is 30% to 95% by mass. When the total amount of a glycidyl group-including resin, aminosilane, and a urethane resin contained in the coatings of the coated glass strands corresponds to 100% by mass, the amount of the glycidyl group-including resin is 10% to 90% by mass, the amount of the aminosilane is 0.1% to 40% by mass, and the amount of the urethane resin is 1% to 50% by mass. Both the coated glass flakes and the coated glass strands have an ignition loss of 0.1% to 2.0% by mass measured pursuant to JIS R3420 (2013).

First claim

The invention claimed is:

1. A reinforcing material for use with a thermoplastic resin, the reinforcing material comprising:
coated glass flakes; and
coated glass strands,
wherein each of the coated glass strands includes a plurality of glass filaments and a coating formed on the glass filaments,
the glass flakes have a thickness of 0.1 to 4.0 μm,
the glass flakes have an average particle diameter of 10 to 800 μm,
the coatings on the glass flakes contain a first glycidyl group-including resin and aminosilane,
the coatings on the glass flakes contain the first glycidyl group-including resin in an amount of 30% to 95% by mass when a total amount of the first glycidyl group-including resin and the aminosilane, corresponds to 100% by mass,
the coated glass flakes have an ignition loss of 0.1% to 2.0% by mass measured pursuant to JIS R3420 (2013),
the coatings on the glass filaments contain a second glycidyl group-including resin, aminosilane, and a urethane resin,
the coatings on the glass filaments contain the second glycidyl group-including resin in an amount of 10% to 90% by mass, the aminosilane in an amount of 0.1% to 40% by mass, and the urethane resin in an amount of 1% to 50% by mass when a total amount of the second glycidyl group-including resin, the aminosilane, and the urethane resin corresponds to 100% by mass, and the coated glass strands have an ignition loss of 0.1% to 2.0% by mass measured pursuant to JIS R3420 (2013); and
wherein the reinforcing material has a mass ratio of coated glass flakes to coated glass strands of 1 to 15/25 to 70.

2. A resin molded article, comprising:
a thermoplastic resin; and
the reinforcing material according to claim 1 .

3. The resin molded article according to claim 2 , wherein the thermoplastic resin is polyphenylene sulfide.

4. The resin molded article according to claim 2 , wherein the resin molded article includes the coated glass flakes in an amount of 1% to 35% by mass and the coated glass strands in an amount of 5% to 70% by mass when a total amount of the thermoplastic resin, the coated glass flakes, and the coated glass strands corresponds to 100% by mass.

5. The resin molded article according to claim 3 , wherein the resin molded article includes the coated glass flakes in an amount of 1% to 35% by mass and the coated glass strands in an amount of 5% to 70% by mass when a total amount of the thermoplastic resin, the coated glass flakes, and the coated glass strands corresponds to 100% by mass.

Assignees

• Nippon Sheet Glass Co Ltd

Inventors

• Otani Masanori
• Yasuda Akiyoshi
• Kato Shinichi

Classifications

• C08J5/10 Primary

  characterised by the additives used in the polymer mixture · CPC title

• C03C25/326

  Polyureas; Polyurethanes · CPC title

• C03C25/36

  Epoxy resins · CPC title

• C03C25/40

  Organo-silicon compounds · CPC title

• C08J5/08 Primary

  glass fibres · CPC title