Heat transfer composition tape
阅读：476发布：2022-10-18
专利汇可以提供Heat transfer composition tape专利检索，专利查询，专利分析的服务。并且A heat transfer composition in preshaped, tape form comprising an elongate extrusion consisting essentially of an epoxy resin, dicyandiamide curing agent therefor, nitrile rubber, polybutene, particulate heat transfer coefficient-increasing filler and asbestos, the elongate extrusion being strippably adhered to a release backing sheet.，下面是Heat transfer composition tape专利的具体信息内容。
1. A HEAT TRANSFER PRODUCT IN PRESHAPED TAPE FORM COMPRISING STRIPPABLE ADHERED TO A BACKING RELEASE SHEET, A HEAT CURING PLASTIC, ELONGATED COMPOSITION, THE COMPOSITION CONSISTING ESSENTIALLY OF AN INTIMATE MIXTURE OF PARTICULATE SOLIDS HAVING A THERMAL CONDUCTIVITY OF AT LEAST 100 BTU/INCH/HR./SQ.FT./DEG.F. IN AN AMOUNT OF FROM ABOUT 15 TO ABOUT 60 PERCENT, EPOXY RESIN PERCENT IN AN AMOUNT FROM ABOUT 15 TO ABOUT 40 PERCENT, DICYANDIAMIDE PERCENT IN AN AMOUNT OF FROM ABOUT 1 TO ABOUT 15 PARTS PER HUNDRED OF EPOXY RESIN, NITRILE RUBBER PERCENT IN AN AMOUNT OF FROM ABOUT 2 TO ABOUT 15 PERCENT, POLYBTUTENT PRERCENT IN AN AMOUNT OF FROM ABOUT 2 TO ABOUT 15 PERCENT, AND ASBESTOS FIBER IN AN AMOUNT OF FROM ABOUT 3 TO ABOUT 10 PERCENT, SAID PERCENTAGES BEING BY WEIGHT BASED UPON THE WEIGHT OF THE COMPOSITION..
2. The product of claim 1 wherein the stated components are present within the following ranges: particulate solids from about 35 to about 45 percent; epoxy resin from about 25 to about 30 percent; dicyandiamide from about 4 to about 6 parts per hundred parts epoxy resin; nitrile rubber from about 5 to about 10 percent; polybutene from about 10 to about 15 percent; and asbestos fiber from about 4 to about 8 percent.
3. The product of claim 1 wherein said particulate solids are essentially graphite.
4. The product of claim 3 wherein said graphite is electrode grade graphite.
5. The product of claim 3 wherein said graphite is size graded for improved packing density in the composition.
6. The product of claim 5 wherein said graphite is made up of relatively coarse particles, substantially all through 20 mesh but less than 25 percent through 200 mesh, and of relatively fine particles, more than 75 percent through 200 mesh, the relatively coarse particles making up from about 5 to about 40 percent of the composition and the relatively fine particles making up from about 5 to about 40 percent of the composition.
7. The product of claim 1 wherein said epoxy resin is a liquid reaction product of epichlorhydrin and bisphenol A.
8. The product of claim 3 wherein said epoxy resin is a liquid reaction product of epichlorhydrin and bisphenol A.
9. The product of claim 4 wherein said epoxy resin is a liquid reaction product of epichlorhydrin and bisphenol A.
10. The product of claim 5 wherein said epoxy resin is a liquid reaction product of epichlorhydrin and bisphenol A.
11. The product of claim 6 wherein said epoxy resin is a liquid reaction product of epichlorhydrin and bisphenol A.
12. The product of claim 2 wherein said particulate solids are essentially graphite, and wherein said epoxy resin is a liquid reacTion product of epichlorhydrin and bisphenol A.
13. The product of claim 12 wherein said graphite is electrode grade graphite.
14. The product of claim 13 wherein said graphite is made up of relatively coarse particles, substantially all through 20 mesh but less than 25 percent through 200 mesh, and of relatively fine particles, more than 75 percent through 200 mesh, the relatively coarse particles making up from about 10 to about 20 percent of the composition and the realtively fine particles making up from about 20 to 30 percent of the composition.
15. The product of claim 1 wherein said asbestos fiber is chrysotile.
16. The product of claim 4 wherein said asbestos fiber is chrysotile.
17. The product of claim 7 wherein said asbestos fiber is chrysotile.
18. The product of claim 14 wherein said asbestos fiber is chrysotile.
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