Fiber-plastics composites and composition for the production of these fiber-plastics composites

Patent metadata

Field	Value
Publication number	US-10227459-B2
Application number	US-201515523024-A
Country	US
Kind code	B2
Filing date	Oct 27, 2015
Priority date	Oct 30, 2014
Publication date	Mar 12, 2019
Grant date	Mar 12, 2019

Abstract

The present invention relates to fiber-plastics composites consisting of (I) at least one fiber material and (II) a plastics matrix, where the composite is characterized in that the plastics matrix is based on a two-component matrix material (IIa), where the two-component matrix material (IIa) comprises (1) a parent component comprising (A) at least one polycarbonatediol and (2) a hardener component comprising (C) at least one polyisocyanate-modified polyester with from 4 to 15% isocyanate content. The present invention also relates to a process for the production of the fiber-plastics composites and to use of these.

First claim

The invention claimed is:

1. A fiber-plastics composite, consisting of:
(I) at least one fiber material; and
(II) a plastics matrix, which is a cured product of a two-component matrix material (IIa) comprising:
(1) a parent component comprising at least one polycarbonatediol (A) and at least one aliphatic, aromatic, or araliphatic diamine (B) having primary amino groups, secondary amino groups, or both; and
(2) a hardener component comprising at least one polyisocyanate-modified polyester (C) having from 4 to 15% isocyanate content,

wherein an amine number of the at least one diamine (B) is from 300 to 500 mg KOH/g.

2. The fiber-plastics composite as claimed in claim 1 , wherein an OH number of the at least one polycarbonatediol (A) is from 50 to 500 mg KOH/g.

3. The fiber-plastics composite as claimed in claim 1 , wherein the polyisocyanate-modified polyester (C) is a hexamethylene-diisocyanate-modified polyester.

4. The fiber-plastics composite as claimed in claim 1 , wherein the polyisocyanate-modified polyester (C) is obtained by a process comprising reacting hexamethylene diisocyanate with a hydroxy-functional aliphatic polyester.

5. The fiber-plastics composite as claimed in claim 4 , wherein the hydroxy-functional aliphatic polyester is a polycaprolactone polymer.

6. The fiber-plastics composite as claimed in claim 1 , wherein the at least one aliphatic, aromatic, or araliphatic diamine (B) has secondary amino groups.

7. The fiber-plastics composite as claimed in claim 1 , wherein the diamine (B) is a secondary diamine comprising amino groups and an aliphatic group (b1) between nitrogen atoms of the amino groups.

8. The fiber-plastics composite as claimed in claim 1 , wherein an amine number of the at least one diamine (B) is from 350 to 500 mg KOH/g.

9. The fiber-plastics composite as claimed in claim 1 , wherein:
the diamine (B) has the following formula (FII):
( b 2)-NH-( b 1)-NH-( b 2)  (FII);

(b1) is an aliphatic group having from 4 to 30 carbon atoms;
each (b2) is independently —CH 2 CH 2 —CN, —CH 2 CH 2 —C(O)—O—CH 2n+1 , or both; and
n if present is from 1 to 6.

10. A process for producing of the fiber-plastics composite as claimed in claim 1 , the process comprising:
(i) contacting the two-component matrix material (IIa) with the at least one fiber material; and then
(ii) forming the plastics matrix by curing the two-component matrix material (IIa).

11. The process as claimed in claim 10 , wherein the curing occurs at a temperature of no more than 80° C.

12. A composition for producing a fiber-plastics composite, the composition consisting of:
(I) at least one fiber materials; and
(IIa) a two-component matrix material comprising:
(1) a parent component comprising at least one polycarbonatediol (A) and at least one aliphatic, aromatic, or araliphatic diamine (B) having primary amino groups, secondary amino groups, or both; and
(2) a hardener component comprising at least one polyisocyanate-modified polyester (C) having from 4 to 15% isocyanate content,

wherein an amine number of the at least one diamine (B) is from 300 to 500 mg KOH/g.

13. A component, comprising which comprises the fiber-plastics composite of claim 1 .

14. A wind turbine rotor blade, a vehicle component, or a safety jacket, comprising the component of claim 13 .

15. A method of improving mechanical stability in an article, the method comprising:
incorporating the fiber-plastics composite of claim 1 into an article in need thereof.

16. A fiber-plastics composite, consisting of:
(I) at least one fiber material; and
(II) a plastics matrix, which is a cured product of a two-component matrix material (IIa) comprising:
(1) a parent component comprising at least one polycarbonatediol (A); and
(2) a hardener component comprising at least one polyisocyanate-modified polyester (C) having from 4 to 15% isocyanate content,

wherein five mats of the fiber plastics composite are capable of withstanding impact of a projectile from a 0.22 long rifle, from a distance of 10 meters and at a bombardment angle of 90°, without penetration or noticeable bulge.

17. The fiber-plastics composite of claim 9 , wherein:
(b1) is a cycloaliphatic group having from 6 to 18 carbon atoms; and
each (b2) is —CH 2 CH 2 CN.

18. The fiber-plastics composite of claim 1 , wherein a ratio by weight of the at least one fiber material to the two-component matrix material is from 1:1 to 2.5:1.

Assignees

• Basf Coatings Gmbh

Inventors

• Seeger Dirk
• Kaune Martin
• Ramm Uli

Classifications

• C08G18/6651

  with compounds of group C08G18/3225 or polyamines of C08G18/38 · CPC title

• C08G18/44

  Polycarbonates · CPC title

• C08G18/4236

  containing only aliphatic groups · CPC title

• C08J2375/00

  Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers · CPC title

• C08J5/04

  Reinforcing macromolecular compounds with loose or coherent fibrous material · CPC title