Thermoplastic resin composite and method of preparing the same

Patent metadata

Field	Value
Publication number	US-10493702-B2
Application number	US-201514922683-A
Country	US
Kind code	B2
Filing date	Oct 26, 2015
Priority date	Jun 29, 2015
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

Disclosed is a resin composite having improved tensile properties and a method of preparing the same. Particularly, the resin composite comprises a matrix resin and a reinforcement resin which are made of thermoplastic resin compositions.

First claim

What is claimed is:

1. A method of preparing a resin composite, comprising:
melting a reinforcement resin and a matrix resin; and
impregnating the reinforcement resin into the matrix resin to form the resin composite,
wherein the resin composite is prepared using a double belt press laminator comprises four or more sections having different temperature conditions where a first section is closest to the resin injection part of the laminator and a second section, a third and a fourth sections are located sequentially from the first section to the resin discharge part,
wherein a temperature in the double belt press laminator decreases from the resin injection part to a resin discharge part of the laminator, and a temperature of the first section (T 1 ) is in a range of about (T m −5)° C. to (T m +5)° C., a temperature of the second section (T 2 ) is in a range of about (T m −70)° C. to (T m −50)° C., a temperature of the third section (T 3 ) is in a range of about (T m −90)° C. to (T m −80)° C., and a temperature of the fourth section (T 4 ) is in a range of about (T m −110)° C. to (T m −90)° C., as T m being a melting temperature of the reinforcement resin,
wherein a ratio of an interval between the double belts of laminator to a thickness of the laminated matrix resin and the reinforcement resin ranges from about 0.75 to about 0.95, and wherein the resin composite has specific gravity of about 0.880 to 0.900, a tensile modulus of about 0.80 to 1.1 Gpa, and a tensile strength of about 0.80 to 1.10 Mpa.

2. The method of claim 1 , wherein the resin composite is prepared in continuous process.

3. The method of claim 1 , further comprising recrystallizing the formed resin composite in the second section.

4. The method of claim 1 , wherein the temperature of the second section (T 2 ) is lowered by using a cooling apparatus positioned between the first and second sections.

5. The method of claim 4 , wherein a cooling apparatus is installed between the first and second sections.

6. The method of claim 1 further comprising, laminating the matrix resin and the reinforcement resin before melting the reinforcement resin.

7. The method of claim 1 , wherein the matrix resin is in a form of a film, and the reinforcement resin is in a form of a fiber or fabric.

8. The method of claim 1 , wherein the matrix resin and the reinforcement resin have a melting temperature of about 130 to 165° C.

9. The method of claim 1 , wherein the matrix resin and the reinforcement resin are each a thermoplastic resin comprising at least one selected from the group consisting of polyethylene, polypropylene, an acrylonitrile-butadiene-styrene (ABS) resin, polycarbonate, polyacetal, polyamide, polystyrene, and polyphenylene sulfide.

10. The method of claim 1 , wherein the matrix resin and the reinforcement resin are polyolefin resin.

11. The method of claim 1 , wherein each the first and second section of the laminator is driven by a separate roller.

12. The method of claim 6 , wherein each section of the laminator is driven by a separate roller.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Yun Deok Woo
• Kang Hyun Min

Classifications

• B29K2023/06

  PE, i.e. polyethylene · CPC title

• B32B27/32

  comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} · CPC title

• B32B2457/00

  Electrical equipment · CPC title

• B29C70/04 Primary

  comprising reinforcements only, e.g. self-reinforcing plastics · CPC title

• B29K2313/00

  Use of textile products or fabrics as reinforcement (B29K2105/06 takes precedence) · CPC title