Conductive elastomer composition for grounding electrodes (and its variants), grounding extended elastomeric electrode, anode grounded and deep anode ground

 

The invention relates to rubber industry and electrical protection of metal objects from corrosion, in particular for cathodic protection of underground structures with variable electrical characteristics, such as pipes and cables in Reshetikhin or high-impedance electrolytic environments. The invention relates to a conductive elastomeric compositions for the manufacture of electrodes based on butadiene-nitrile rubber, chloroprene rubber, or mixtures thereof, and mixtures of butadiene-nitrile rubber and butadiene-styrene thermoplastic elastomer filled with carbon-based fillers, in combination with a different target additives (plasticizers, vulcanizing agents, antioxidants, and others), providing for a specific volume resistance of 0.05-0.5 Ohmm and 0.5-2500 OhmM. Another group of the invention are ground elastomeric electrode obtained by using as a flexible membrane of the above-mentioned elastomeric compositions, and devices of the anode grounding and deep anode ground, obtained with these elastomeric electrodes. The invention let the effective protection of the products from corrosion. 7 C. and 4 h.p. f-crystals, 7 tab., 5 Il.

Description text in facsimile form (see graphic part)

Claims

1. Conductive elastomer composition for grounding electrodes, including rubber, carbon black, thiuram, plasticizer, characterized in that it comprises a rubber mixture of nitrile butadiene rubber and chloroprene rubber as a plasticizer dibutyl phthalate, as a carbon black conductive fine carbon black and optionally contains zinc white, burnt magnesia, based paste of calcium naphthenate and probably contains ceresin, stearic acid, sulfur, graphite electrical, antioxidant (product 4010) N-phenyl-N¹-cyclohexanediamine-1.4 and ebony dust based on butadiene-nitrile rubber, vulcanized grey in the following ratio, wt.%:

On BNR rubber 22,96-37,31

Chloroprene rubber (neoprene) 10,43-18,70

Dibutyl 8,76-24,9

Thiuram to 0.17 to 0.69

Magnesium oxide burned 0,09-0,29

Zinc white 0,98-1,63

Pasta-based calcium naphthenate 2,48 of 5.99

Highly dispersed carbon black 20,0-17,34

Stearic acid 0,0-0,95

Antioxidant -

N-phenyl-N¹-cyclohexanediamine-1,4 0,0-0,48

2. Conductive elastomer composition for grounding electrodes, including rubber, thiuram, sulfur, carbon black, plasticizer, characterized in that it contains as rubber on BNR rubber as a plasticizer is dibutyl phthalate as carbon black mixture is finely dispersed conductive carbon black and coarse electroconductive carbon black with respect to their 0,05:19,95-19,95:0.05 and further comprises stearic acid, zinc white, paste-based calcium naphthenate and antioxidant - N-phenyl-N¹-cyclohexanediamine-1,4 in the following ratio, wt.%:

On BNR rubber 36,4-36,6

Thiuram 0,42-0,62

Sulfur 0,35-0,55

Dibutyl 8,32-charged 8.52

Stearic acid 0,6-0,8

Zinc white 0,98-1,18

Pasta-based calcium naphthenate 5,8-6,0

Fine electroconductive

carbon 2,2-43,89

Coarse electroconductive

carbon 2,2-43,89

Antioxidant -

N-phenyl-N¹-cyclohexanediamine-1,4 of 0.24 to 0.44

Icesi carbon, plasticizer, characterized in that it comprises a rubber mixture on BNR rubber and the best choice of thermoplastic elastomer, as a plasticizer is dibutyl phthalate, as carbon is a mixture of highly dispersed conductive carbon black and coarse electroconductive carbon black at a ratio of about 0.05 to : 19,95 - 19,95 : 0,05, respectively, and further comprises stearic acid, zinc white, paste-based calcium naphthenate and antioxidant - N-phenyl-N¹-cyclohexanediamine-1,4 in the following ratio, wt.%:

On BNR rubber 32,02-32,22

The best choice TPR 4,28-of 4.38

Thiuram 0,35-0,55

Sulfur 0,3-0,5

Dibutyl 8,4-8,6

Stearic acid 0,6-0,8

Zinc white 0,9-1,1

Pasta-based calcium naphthenate 5,8-6,0

Fine electroconductive

carbon 2,21-44,0

Coarse electroconductive

carbon 2,21-44,0

Antioxidant -

N-phenyl-N¹-cyclohexanediamine-1,4 of 0.24 to 0.44

4. Conductive elastomer composition for grounding electrodes, including rubber, vulcanizing agent, who as a vulcanizing agent diphenylguanidine, the carbonaceous filler - short-length carbon fiber and also contains stearic acid, zinc white, burnt magnesia in the following ratio, wt.%:

Chloroprene rubber 34,21-34,23

Diphenylguanidine 0,15-0,17

Stearic acid 0,31-0,33

Magnesium oxide burned to 2.57 at 2.59

Zinc white 3,21-3,23

Carbon short-length fiber 59,49-to 59.51

5. Conductive elastomer composition for grounding electrodes based on rubber, turama, plasticizer, carbon black, characterized in that it is a product of mixing in the mill conductive elastomeric uterine composition composition, wt.%:

The NBR 23,05-23,07

Ebony dust based on butadiene-nitrile rubber, vulcanized grey 3,83-3,85

Antioxidant -

N-phenyl-N¹-cyclohexanediamine-1,4 from 0.37 to 0.39

Ceresin 0,75-0,77

Dibutyl cent to 8.85-8,87

Electrical graphite 17,23-17,25

Fine electroconductive

carbon 30,75-30,77

Thiuram of 0.26 and 0.28

Magnesium oxide burned 0,18-0, 20

Zinc white 1,52 -1,54

Pasta-based calcium naphthenate to 2.57 at 2.59

and electroconductive ELAS¹-cyclohexanediamine-1,4 of 0.24 to 0.44

Dibutyl 8,8-9,0

Sulfur 0,35-0,55

Coarse electroconductive

carbon 45,53-45,73

Thiuram 0,4-0,6

Stearic acid 0,6-0,8

Zinc white 0,98-1,18

Pasta-based calcium naphthenate 5,8-6,0

6. Grounding extended elastomeric electrode containing metal trunk conductors and a working shell containing an elastomeric material, is electrically in contact with it, characterized in that the conductors are made of stranded wire and placed inside the working sheath coaxially along the Central axis of the electrode, and a working shell consists of layers of carbon material in the form of carbon yarns, woven in a roving or ribbon of carbon fabric, applied along the length of the conductors and a flexible sheath of electrically conductive elastomeric composition with a specific volume resistance of 0.05-0.5 Ohmm p. 1, filling the gaps between the layers of these carbon materials.

7. Grounding extended elastomeric electrode on p. 6, characterized in that it further comprises a second flexible membrane of the conductive elastomer composition with changing the radius and size of the conductors and the first flexible sheath of elastomeric electrically conductive composition with a specific volume resistance of 0.05-0.5 Ohmm

8. Grounding extended elastomeric electrode on p. 6, characterized in that it further comprises a second flexible membrane of the conductive elastomer composition with changing the radius and the length of the electrode specific volume resistance of 0.5 to 2500 Ohmsm on p. 5, placed between the conductors and the first shell of elastomeric electrically conductive composition with a specific volume resistance of 0.05-0.5 Ohmm

9. Grounding extended elastomeric electrode on PP.7 and 8, characterized in that it further comprises a third flexible membrane of the conductive elastomer composition under item 4.

10. Grounding extended elastomeric electrode on PP.6-9, characterized in that the ends of the electrode contain elements of isolation, providing an exception "end effect" when the body contact of the electrode with the electrolyte, includes PVC hose, attached to the body of the electrode by means of clamps, plastic stub protective sleeve and sealant, sealing rings of dielectric rubber and heat-shrinkable tube.

11. Deep anode ground, consisting of electrode - anode body earthing placed in Squaw coke breeze (crumb), characterized in that the electrode is a grounding elastomeric electrode on one of the PP.6-9, the conductors of the connection cable is a single unit of the conductors of the electrode, which ensures the absence of contact nodes and the electrical connections in the body of the electrode, the end surface electrode contain elements of isolation, including the site of isolation of the dielectric rubber or sealant, a plastic protective sleeve, shrink sleeve and sealing ring of dielectric rubber, and the lower end of the electrode is equipped with a metal tip, insulated from the body of the electrode above the site of isolation, the electrode is placed in a vertical bore coaxial with the centering rings attached to the electrode by means of clamps.