POLYMER RESIN COMPOSITION, POLYMER COMPOSITE TAPE, AND FRONT BUMPER OF AUTOMOBILE

• US 20160347948A1
• Filed: 12/09/2015
• Published: 12/01/2016
• Est. Priority Date: 05/29/2015
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group), Lotte Chemical Corporation
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group), Lotte Chemical Corporation
• Inventors: Shin, Joong Hyun, Yong, Jiae, Jang, Mi Ok, Choi, Chi Hoon, Cho, Jeong Min, Kim, Jung Tae
• Granted Patent: US 9,809,707 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60R 19/03 characterised by material, e.g. composite B60R19/18 takes precedence
• CPC Class Codes: C08G 81/025 containing polyether sequences
• CPC Class Codes: C08J 2323/12 Polypropene
• CPC Class Codes: C08J 2323/26 modified by chemical after-treatment
• CPC Class Codes: C08J 5/042 with carbon fibres
• CPC Class Codes: C08J 5/06 using pretreated fibrous materials
• CPC Class Codes: C08K 7/02 Fibres or whiskers
• CPC Class Codes: C08L 23/12 Polypropene
• CPC Class Codes: C08L 51/08 grafted on to macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds
• CPC Class Codes: C08L 87/005 Block or graft polymers not provided for in groups C08L1/00 - C08L85/04

Abstract

Disclosed are a polymer resin composition comprising: a binder resin including an olefin-based polymer resin; a carbon fiber surface-treated with a predetermined compound; and a modified polyolefin resin grafted with polyetheramine-bonded dicarboxylic acid or an acid anhydride thereof, a polymer composite tape including the polymer resin composition, and a front bumper of a vehicle equipped with the polymer composite tape.

Claims

1. A polymer resin composition comprising:

a binder resin comprising an olefin-based polymer resin;

a carbon fiber that is surface-treated with one or more compounds selected from the group consisting of an epoxy compound, a phenol compound, polyester and vinyl ester; and

a modified polyolefin resin that is grafted with polyetheramine-bonded dicarboxylic acid or an acid anhydride thereof.

2. The polymer resin composition of claim 1, wherein the modified polyolefin resin is grafted with an amount of about 0.1 to 10 wt % of the polyetheramine-bonded dicarboxylic acid or the acid anhydride thereof, based on the total weight of the modified polyolefin resin.

3. The polymer resin composition of claim 2, wherein the modified polyolefin resin is grafted with an amount of about 2 to 6 wt % of the polyetheramine-bonded dicarboxylic acid or the acid anhydride thereof, based on the total weight of the modified polyolefin resin.

4. The polymer resin composition of claim 1, wherein the modified polyolefin resin includes a polypropylene resin having a molecular weight distribution of about 5 to 10.

5. The polymer resin composition of claim 4, wherein the modified polyolefin resin includes the polypropylene resin having an isotactic index of about 97% to 100%.

6. The polymer resin composition of claim 1, wherein the polyetheramine includes one or more polyetheramines selected from the group consisting of following Chemical Formulae 1 to 3:

7. The polymer resin composition of claim 1, wherein the modified polyolefin resin grafted with polyetheramine-bonded dicarboxylic acid or an acid anhydride thereof has a weight average molecular weight of about 5,000 to 500,000.

8. The polymer resin composition of claim 1, wherein the olefin-based polymer resin includes a polypropylene resin.

9. The polymer resin composition of claim 1, wherein the binder resin includes a crystalline polypropylene resin having a melting index of about 30 g/10 min to 100 g/10 min according to ASTM D1238 at a temperature of about 230°

C.

10. The polymer resin composition of claim 9, wherein the crystalline polypropylene resin has a molecular weight distribution of about 5 to 10, and isotactic index of about 97% to 100%.

11. The polymer resin composition of claim 1, wherein the carbon fiber surface-treated with one or more compounds selected from the group consisting of an epoxy compound, a phenol compound, polyester and vinyl ester has density of about 1.70 g/cm³ to 1.90 g/cm³.

12. The polymer resin composition of claim 1, wherein the carbon fiber surface-treated with one or more compounds selected from the group consisting of an epoxy compound, a phenol compound, polyester and vinyl ester has a weight per unit length of about 200 g/1000 m to 4,000 g/1000 m.

13. The polymer resin composition of claim 1, wherein the binder resin including the olefin-based polymer resin is included in the polymer resin composition in an amount of about 20 to 95 wt %;

the carbon fiber that is surface-treated with one or more compounds selected from the group consisting of an epoxy compound, a phenol compound, polyester and vinyl ester is included in the polymer resin composition in an amount of about 1 to 70 wt %; and

the modified polyolefin resin that is grafted with polyetheramine-bonded dicarboxylic acid or an acid anhydride thereof is included in the polymer resin composition in an amount of about 0.1 to 20 wt %, all the wt % based on the total weight of the polymer composite resin.

14. A polymer composite tape comprising a polymer resin composition of claim 1.

15. A vehicle part that comprising a polymer composite tape of claim 14.

16. The vehicle part of claim 15 is a front bumper of a vehicle.

17. The front bumper of a vehicle of claim 16, wherein the polymer composite tape is wrapped around two or more beam-front bumpers.

18. The front bumper of a vehicle of claim 17, further comprising:

an olefin-based polymer resin layer formed on the polymer composite tape.