ELECTRICAL TRACKING RESISTANCE COMPOSITIONS, ARTICLES FORMED THEREFROM, AND METHODS OF MANUFACTURE THEREOF

• US 20180044522A1
• Filed: 02/22/2016
• Published: 02/15/2018
• Est. Priority Date: 02/23/2015
• Status: Active Grant

• Current Assignee: SHPP Global Technologies BV (Government of Saudi Arabia)
• Original Assignee: SABIC Global Technologies BV (Government of Saudi Arabia)
• Inventors: SHETH, Kapil Chandrakant, RAMALINGAM, Hariharan, MEDIRATTA, Gaurav
• Granted Patent: US 10,294,367 B2
• Time in Patent Office: Days
• CPC Class Codes: B32B 2307/20 having particular electrical or magnetic properties, e.g. piezoelectric
• CPC Class Codes: B32B 2307/206 Insulating
• CPC Class Codes: B32B 2307/30 having particular thermal properties
• CPC Class Codes: B32B 2307/50 having particular mechanical properties
• CPC Class Codes: B32B 2307/54 Yield strength; Tensile strength
• CPC Class Codes: B32B 2379/00 Other polymers having nitrogen, with or without oxygen or carbon only, in the main chain
• CPC Class Codes: B32B 2457/00 Electrical equipment
• CPC Class Codes: B32B 2457/04 Insulators
• CPC Class Codes: B32B 27/28 comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
• CPC Class Codes: B32B 27/281 comprising polyimides
• CPC Class Codes: B32B 27/285 comprising polyethers
• CPC Class Codes: C08G 73/10 Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
• CPC Class Codes: C08G 73/1046 Polyimides containing oxygen in the form of ether bonds in the main chain
• CPC Class Codes: C08G 73/1064 containing sulfur
• CPC Class Codes: C08K 2003/2217 of magnesium
• CPC Class Codes: C08K 3/013 Fillers, pigments or reinforcing additives
• CPC Class Codes: C08K 3/34 Silicon-containing compounds
• CPC Class Codes: C08K 3/346 Clay
• CPC Class Codes: C08L 2203/206 use in coating or encapsulating of electronic parts
• CPC Class Codes: C08L 27/00 Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 27/12 : containing fluorine atoms
• CPC Class Codes: C08L 27/18 : Homopolymers or copolymers or tetrafluoroethene
• CPC Class Codes: C08L 79/00 : Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
• CPC Class Codes: C08L 79/08 : Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
• CPC Class Codes: C08L 81/00 : Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers

Abstract

A composition comprises, based on the total weight of the composition, 45 wt % to 75 wt % of a polyetherimide; and 20 wt % to 45 wt % of talc; and 5 wt % to 15 wt % of a fluorinated polymer; wherein the composition has a number of drops to tracking at 250 volts of greater than or equal to 50 drops according to ASTM D-3638-85.

Claims

1. A composition comprising, based on the total weight of the composition,wt % to 75 wt % of a polyetherimide;

and

20 wt % to 45 wt % of talc; and

5 wt % to 15 wt % of a fluorinated polymer;

wherein the composition has a number of drops to tracking at 250 volts of greater than or equal to 50 drops according to ASTM D-3638-85.

2. The composition of claim 1, wherein the polyetherimide comprises units of the formula

3. The composition of claim 1, wherein

R is a divalent group of the formula

4. The composition of claim 3, wherein R is m-phenylene and Q is isopropylidene.

5. The composition of claim 3, wherein

at least 50 mole percent (mol %) of the R groups are bis(3,4′

-phenylene)sulfone, bis(3,3′

-phenylene)sulfone, or a combination comprising at least one of the foregoing and the remaining R groups are p-phenylene, m-phenylene or a combination comprising at least one of the foregoing; and

Z is 2,2-(4-phenylene)isopropylidene.

6. The composition of claim 1, wherein the fluorinated polymer comprises polytetrafluoroethylene.

7. The composition of claim 1 comprising, based on the total weight of the composition,wt % to 70 wt % of a polyetherimide;

and

25 wt % to 45 wt % of talc; and

5 wt % to 8 wt % of polytetrafluoroethylene;

wherein the composition has;

a number of drops to tracking at 250 volts of greater than or equal to 50 drops according to ASTM D-3638-85; and

a tracking voltage of greater than or equal to 250 volts according to ASTM D-3638-85.

8. The composition of claim 7, wherein the composition has:

a tensile strength greater than or equal to 70 MPa determined according to ASTM D638;

a tensile modulus of greater than or equal to 6500 GPa determined according to ASTM method D638, and

a heat deflection temperature of greater than or equal to 200°

C. measured on 3.2 millimeter injection molded bar at 1.82 MPa stress according to ASTM D648.

9. The composition of claim 1 comprising, based on the total weight of the composition,wt % to 55 wt % of a polyetherimide sulfone;

and

35 wt % to 45 wt % of talc; and

8 wt % to 15 wt % of polytetrafluoroethylene;

wherein the composition has;

a number of drops to tracking at 250 volts of greater than or equal to 50 drops according to ASTM D-3638-85; and

a tracking voltage of greater than or equal to 300 volts according to ASTM D-3638-85,

wherein the polyetherimide sulfone comprises units of the formula

10. The composition of claim 9, wherein the composition has:

a tensile strength greater than or equal to 40 MPa determined according to ASTM D638;

a tensile modulus of greater than or equal to 11,000 GPa determined according to ASTM method D638, and

a heat deflection temperature of greater than or equal to 210°

C. measured on 3.2 millimeter injection molded bar at 1.82 MPa stress according to ASTM D648.

11. The composition of claim 1, further comprising an additive selected from a processing aid, a heat stabilizer, a dye, a flame retardant, or a combination comprising at least one of the foregoing.

12. An insulating material comprising the composition of claim 1.

13. An article selected from a molded article, a thermoformed article, an extruded film, an extruded sheet, one or more layers of a multi-layer article, a substrate for a coated article, and a substrate for a metallized article made from the composition of claim 1.

14. An article made from the composition of claim 1, wherein the article is a solar apparatus, an electrical junction box, an electrical connector, an electrical vehicle charger, an outdoor electrical enclosure, a smart meter enclosure, a smart grid power node, a photovoltaic frame and a miniature circuit breaker.

15. A method of manufacture of an article, comprising molding, extruding, or casting the composition of claim 1 to form the article.

16. A method of controlling the tracking of an electrical current of an article of manufacture, the method comprising:

providing a composition of claim 1, and processing the composition to form an article of manufacture.

17. The method of claim 16, wherein the article is a solar apparatus, an electrical junction box, an electrical connector, an electrical vehicle charger, an outdoor electrical enclosure, a smart meter enclosure, a smart grid power node, a photovoltaic frame and a miniature circuit breaker.