Hybrid-type fiber-reinforced composite material and apparatus for producing same

Patent metadata

Field	Value
Publication number	US-2025289210-A1
Application number	US-202519226107-A
Country	US
Kind code	A1
Filing date	Jun 2, 2025
Priority date	Aug 20, 2019
Publication date	Sep 18, 2025
Grant date	—

Abstract

A hybrid fiber-reinforced composite material according to an aspect of the present disclosure may comprise a first thermosetting resin, a first continuous fiber layer laminated on an upper surface of the first thermosetting resin, a long fiber layer laminated on an upper surface of the first continuous fiber layer, a second continuous fiber layer laminated on an upper surface of the long fiber layer, and a second thermosetting resin laminated on an upper surface of the second continuous fiber layer.

First claim

What is claimed is:

1 . A hybrid fiber-reinforced composite material comprising:
a first thermosetting resin; a first continuous fiber layer laminated on one surface of the first thermosetting resin; a long fiber layer laminated on one surface of the first continuous fiber layer; a second continuous fiber layer laminated on one surface of the long fiber layer; and a second thermosetting resin laminated on one surface of the second continuous fiber layer, wherein the first thermosetting resin, the first continuous fiber layer, the long fiber layer, the second continuous fiber layer and the second thermosetting resin are laminated in order.

2 . The hybrid fiber-reinforced composite material of claim 1 , wherein the first thermosetting resin, the first continuous fiber layer, the long fiber layer, the second continuous fiber layer and the second thermosetting resin are laminated continuously and closely.

3 . The hybrid fiber-reinforced composite material of claim 1 , wherein the first thermosetting resin, the first continuous fiber layer, the long fiber layer, the second continuous fiber layer and the second thermosetting resin are laminated symmetrically from bottom to top with the long fiber layer as the center.

4 . The hybrid fiber-reinforced composite material of claim 1 , wherein the first continuous fiber layer and the second continuous fiber layer have the same thickness each other.

5 . The hybrid fiber-reinforced composite material of claim 1 , wherein the first thermosetting resin and the second thermosetting resin have the same thickness each other.

6 . The hybrid fiber-reinforced composite material of claim 1 , wherein the first thermosetting resin and the second thermosetting resin are supplied in the liquid phase before curing, and are thermo-compression bonded along with continuous fibers and long fibers so that the thermosetting resins penetrate into the continuous fibers and at least some of the long fibers.

7 . The hybrid fiber-reinforced composite material of claim 1 , wherein the first thermosetting resin and the second thermosetting resin each include at least one of epoxy, unsaturated polyester, and vinyl ester.

8 . The hybrid fiber-reinforced composite material of claim 1 , wherein the long fiber layer has a thickness of 0.3 to 1 mm, and the first continuous fiber layer and the second continuous fiber layer each have a thickness of 0.3 to 0.7 mm.

9 . The hybrid fiber-reinforced composite material of claim 1 , wherein the first long fiber layer and the second long fiber layer each comprise at least one of glass fiber and carbon fiber.

10 . The hybrid fiber-reinforced composite material of claim 9 , wherein the hybrid fiber-reinforced composite material has a basis weight of 1,000 to 4,000 gsm, and the at least one of glass fiber and carbon fiber has a weight ratio of 25 to 70% of the hybrid fiber-reinforced composite material.

11 . The hybrid fiber-reinforced composite material of claim 1 , wherein fibers cut to a length of 1 to 2 inches are used as long fibers for the long fiber layer, and
wherein woven fabrics are used for the first continuous fiber layer and the second continuous fiber layer.

12 . The hybrid fiber-reinforced composite material of claim 1 , wherein the hybrid fiber-reinforced composite material becomes SMC (Sheet Molding Compound) in which the first thermosetting resin, the first continuous fiber layer, the long fiber layer, the second continuous fiber layer and the second thermosetting resin are integrated.

Assignees

• Lg Hausys Ltd

Inventors

• Oh Ae Ri
• Kim Hee June

Classifications

• B32B2307/732

  Dimensional properties · CPC title

• B32B2307/718

  Weight, e.g. weight per square meter · CPC title

• B32B2307/546

  Flexural strength; Flexion stiffness · CPC title

• B32B2262/106

  Carbon fibres, e.g. graphite fibres · CPC title

• B32B2262/101

  Glass fibres · CPC title