Polyaryletherketone/polyarylene sulfide composition
A polymer composition comprising at least one polyaryletherketone, at least one polyarylene sulfide, and a plurality of reinforcing fibers is provided. The composition has a melt viscosity of about 250 Pa-s or less as determined in accordance with ISO Test No. 11443:2005 at a shear rate of 1,000 seconds −1 and temperature of about 380° C.
1. A polymer composition comprising at least one polyaryletherketone, at least one polyarylene sulfide, and a plurality of reinforcing fibers, wherein the polyaryletherketone constitutes from about 40 wt. % to about 80 wt. % of the polymer composition and the polyarylene sulfide constitutes from about 0.5 wt. % to about 15 wt. % of the polymer composition, wherein the composition has a melt viscosity of 250 Pa-s or less as determined in accordance with ISO Test No. 11443:2005 at a shear rate of 1,000 seconds −1 and temperature of about 380° C., wherein the composition exhibits a deflection temperature under load of about 280° C. or more as determined in accordance with ISO Test No. 75-2:2013 at a specified load of 1.8 MPa, and wherein the composition exhibits a tensile strength of from 100 to about 400 MPa as determined in accordance with ISO Test No. 527:2012 at 23° C.
2. The polymer composition of claim 1 , wherein the polyaryletherketone has a glass transition temperature of from about 130° C. to about 230° C.
3. The polymer composition of claim 1 , wherein the polyaryletherketone has a melt viscosity of about 150 Pa-s or more, as determined in accordance with ISO Test No. 11443:2005 at a shear rate of 1,000 s −1 and temperature of about 400° C.
4. The polymer composition of claim 1 , wherein the polyaryletherketone contains a moiety having the structure of Formula (I) and/or Formula (II):
wherein,
m and r are independently zero or a positive integer;
s and w are independently zero or a positive integer;
E and E′ are independently an oxygen atom or a direct link;
G is an oxygen atom, a direct link, or —O-Ph-O— where Ph is a phenyl group; and
Ar is one of the following moieties (i) to (vi), which is bonded via one or more of phenyl moieties to adjacent moieties:
5. The polymer composition of claim 4 , wherein the polyaryletherketone contains a repeat unit of the following general Formula (III):
wherein,
A and B are independently 0 or 1.
6. The polymer composition of claim 4 , wherein the polyaryletherketone contains a repeat unit of the following general Formula (IV):
wherein,
A and B are independently 0 or 1.
7. The polymer composition of claim 1 , wherein the polyaryletherketone is polyetheretherketone, polyetherketone, polyetherketoneketone, polyetherketoneetherketoneketone, polyetheretherketoneketone, polyether-diphenyl-ether-ether-diphenyl-ether-phenyl-ketone-phenyl, or a blend or copolymer thereof.
8. The polymer composition of claim 1 , wherein the polyarylene sulfide is a polyphenylene sulfide.
9. The polymer composition of claim 1 , wherein the polyarylene sulfide has a melt viscosity of about 150 Pa-s or les, as determined in accordance with ISO Test No. 11443:2005 at a shear rate of 1,200 seconds −1 and temperature of about 310° C.
10. The polymer composition of claim 1 , wherein the polyarylene sulfide is present in an amount of from about 1 to about 60 parts per 100 parts by weight of the polyaryletherketone.
11. The polymer composition of claim 1 , wherein the polyarylene sulfide constitutes from about 2 wt. % to about 15 wt. % of the polymer composition.
12. The polymer composition of claim 1 , wherein the reinforcing fibers have an aspect ratio of from about 1.5 to about 10, the aspect ratio being defined as the cross-sectional width of the fibers divided by the cross-sectional thickness of the fibers.
13. The polymer composition of claim 1 , wherein the reinforcing fibers include glass fibers.
14. The polymer composition of claim 1 , wherein the reinforcing fibers are present in an amount of from about 20 to about 80 parts per 100 parts by weight of the polyaryletherketone.
15. The polymer composition of claim 1 , wherein the reinforcing fibers constitute from about 5 wt. % to about 60 wt. % of the polymer composition.
16. The polymer composition of claim 1 , wherein the polyaryletherketone constitutes from about 45 wt. % to about 75 wt. % of the polymer composition.
17. The polymer composition of claim 1 , wherein the ratio of the melt viscosity of the polymer composition to the melt viscosity of the polyaryletherketone is about 0.98 or less.
18. The polymer composition of claim 1 , further comprising an organosilane compound.
19. The polymer composition of claim 1 , wherein after being submerged in an aqueous solution containing 20% by volume of water and heated at a temperature of 150° C. for 2,000 hours, the composition exhibits a hydrolytic tensile strength, wherein the ratio of the hydrolytic tensile strength to the tensile strength prior to being submerged in the aqueous solution is about 0.5 or more.
20. The polymer composition of claim 1 , wherein the composition exhibits a V0 rating as determined in accordance with UL94 at a thickness of 1.6 mm.
21. The polymer composition of claim 1 , wherein the composition exhibits a V0 rating as determined in accordance with UL94 at a thickness of 0.4 mm after conditioning for 48 hours at 23° C. and 50% relative humidity.
22. A shaped part comprising the polymer composition of claim 1 .
23. The shaped part of claim 22 , wherein the shaped part is injection molded.
24. An electronic component comprising the shaped part of claim 22 .
25. The polymer composition of claim 1 , wherein the composition is free of an organosilane compound.