Stranded conductor filling compound of low molecular weight poly

Details Stranded conductor filling compound of low molecular weight poly Stranded conductor filling compound of low molecular weight poly

1989-04-05

1991-09-17

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 35, 524 37, 524 42, 524521, 524523, H02G 1500

Patent

active

050495933

ABSTRACT:
A water migration resisting filler for filling the interstices of a stranded conductor, an electrical power transmission cable including such filler and a method of making such cable. The filler includes a polymeric compound having a 100 gram needle penetration value between 50 anad 100 tenths of a millimeter at 25.degree. C. and particles of a water swellable material having a particle size of not greater than 20 microns are in contact with the polymeric compound either by admixing it with the compound or applying it to the surface thereof. In the method, the polymeric compound is flowed around the wires of the conductor as they are stranded together and the water swellable material is either admixed with the compound or applied thereto as the conductor is formed, a semi-conductive layer is extruded around the so-filled conductor and a layer of insulation is extruded around the semi-conductive layer.

REFERENCES:
patent: 2558929 (1951-07-01), Bunish et al.
patent: 3893962 (1975-07-01), Walton et al.
patent: 4351913 (1982-09-01), Patel
patent: 4382821 (1983-05-01), Davis et al.

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