Claims
- 1. A corona resistant composition comprising:
about 15 to about 85 wt % of a thermoplastic resin comprising polyarylene ether and polyarylene sulfide; about 10 to about 30 wt % glass fibers; and about 5 to about 51 wt % of a mineral filler having an average radius of gyration effective to produce a corona resistance of greater than 200 hours when continuously subjected to a voltage of 5000 volts, wherein the weight percents are based on the weight of the total composition.
- 2. The composition of claim 1, wherein the thermoplastic composition has a corona resistance of greater than 400 hours when continuously subjected to a voltage of 5000 volts.
- 3. The composition of claim 1, wherein the thermoplastic composition has a corona resistance of greater than 1000 hours when continuously subjected to a voltage of 5000 volts.
- 4. The composition of claim 1, wherein the thermoplastic composition has a corona resistance of greater than 1500 hours when continuously subjected to a voltage of 5000 volts.
- 5. The composition of claim 1, wherein the thermoplastic composition comprises about 1 to about 90 wt % polyarylene ether and about 99 to about 10 wt % polyarylene sulfide based on the total amount of thermoplastic resin.
- 6. The composition of claim 1, further comprising about 1 wt % to about 20 wt % impact modifier and a flow promotor based on the total weight of the composition.
- 7. The composition of claim 1, wherein the glass fibers comprise E-glass, A-glass, C-glass, D-glass, R-glass, S-glass, or a combinations comprising at least one of the foregoing glasses.
- 8. The composition of claim 1, wherein the glass fibers comprise about 50 to about 70 wt % silica based on a total weight of the glass fiber.
- 9. The composition of claim 1, wherein the glass fibers have a filament diameter of about 8 micrometers to about 35 micrometers.
- 10. The composition of claim 1, wherein the glass fibers have a filament diameter of about 8 micrometers to about 15 micrometers.
- 11. The composition of claim 1, wherein the mineral filler is selected from the group consisting of asbestos, ground glass, kaolin, clay minerals, silica, calcium silicate, calcium carbonate, magnesium oxide, zinc oxide, aluminum silicate, calcium sulfate, magnesium carbonate, sodium silicate, barium carbonate, barium sulfate, titanium dioxide, mica, talc, chopped glass, alumina, alumina trihydrate, quartz, wollastonite, and combinations comprising at least one of the foregoing mineral fillers.
- 12. The composition of claim 1, wherein the mineral filler is a particulate material having an average radius of gyration of about 50 micrometers.
- 13. The composition of claim 1, wherein the mineral filler is a platelet having a maximum diameter of about 4,000 micrometers.
- 14. The composition of claim 1, wherein the mineral filler is a whisker having a maximum length of about 10,000 micrometers and an average diameter of less than about 300 micrometers.
- 15. A corona resistant thermoplastic resin composition comprising:
about 25 to about 70 wt % of a polyarylene sulfide resin based upon the total amount of thermoplastic resin; about 15 to about 50 wt % of polyarylene ether resin based upon the total amount of thermoplastic resin; about 10 to about 30 wt % of a glass fiber based upon the total weight of the composition, wherein the glass fiber has a filament diameter of about 8 micrometers to about 35 micrometers; and about 5 to about 51 wt % of a mineral filler based upon the total weight of the composition, wherein the mineral filler is selected from the group consisting of talc, BaSO4, silica and nanoclay, and wherein the mineral filler has an average radius of gyration effective to produce a corona resistance greater than 200 hours when continuously subjected to a voltage of 5000 volts.
- 16. The composition of claim 15, wherein the composition further comprises about 1 wt % to about 20 wt % of an impact modifier and a flow promotor based on the total weight of the composition.
- 17. The composition of claim 15, wherein the glass fiber is selected from the group consisting of an E-glass, an A-glass, a C-glass, an D-glass, an R-glass, an S-glass and combinations comprising at least one of the foregoing glass fibers.
- 18. The composition of claim 15, wherein the glass fiber comprises about 50 to about 70 wt % silica based upon a total weight of the glass fiber.
- 19. The composition of claim 15, wherein the glass fiber has a filament diameter of about 8 micrometers to about 15 micrometers.
- 20. The composition of claim 15, wherein the mineral filler is a particulate material having an average radius of gyration of about 50 micrometers.
- 21. The composition of claim 15, wherein the mineral filler is a platelet having a maximum diameter of about 4,000 micrometers.
- 22. The composition of claim 15, wherein the mineral filler is a whisker having a maximum length of about 10,000 micrometers and an average diameter of about 300 micrometers.
- 23. A method of making a corona resistant article comprising:
melt blending a composition comprising polyarylene oxide, polyarylene sulfide, about 10 to about 30 wt % glass fibers; and about 5 to about 51 wt % of a mineral filler having an average radius of gyration effective to produce a corona resistance greater than 1000 hours, wherein the weight percents are based on total composition to produce a blend; and molding the blend into a hape.
- 24. An article comprising the composition of claim 1.
- 25. An article formed from the method of claim 23.
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application is related to and claims priority from Provisional Application No. 60/289,375 filed on May 8, 2001, the entire contents of which are incorporated by reference herein.
Provisional Applications (1)
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Number |
Date |
Country |
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60289375 |
May 2001 |
US |