Seabed communication composite cable with modified polyacrylonitrile sheath
A polyacrylonitrile, submarine communication technology, used in submarine cables, cables with double-stranded/quad-stranded, insulated cables, etc., can solve economic construction and military communication losses, military submarine cable damage, submarine The water resistance and breakdown resistance of the control cable are difficult to meet the actual needs, so as to achieve the effect of easy promotion, simple steps and excellent water resistance
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[0030] The present invention also provides a preparation method of a submarine communication integrated cable provided with a modified polyacrylonitrile sheath, comprising:
[0031] 1) Extrude the modified polyacrylonitrile on the outside of the tinned conductor to form a modified polyacrylonitrile insulating sleeve, and then wrap the polyvinyl chloride water-blocking tape around the outside of the modified polyacrylonitrile insulating sleeve to form a polyvinyl chloride Water blocking tape covering layer, then braid tinned copper wire on the outside of PVC water blocking tape covering layer to form tinned copper wire braided shielding layer, then extrude modified polyacrylonitrile on tinned copper wire A modified polyacrylonitrile sheath is formed on the outside of the braided shielding layer to obtain a first wire 1;
[0032]2) Extrude cross-linked polyacrylonitrile on the outside of the glass fiber core to form a cross-linked polyacrylonitrile insulation sleeve, and then br...
Embodiment 1
[0040] 1) Under the condition of a negative pressure of -4MPa in vacuum, ash calcium powder (particle size is 0.5mm), trioctyl ammonium methyl bisulfate and hydrochloric acid solution (concentration is 27% by weight) according to 100:26: Mix at 180°C and perform activation treatment at 80°C for 4 hours, then filter the filter cake to obtain activated ash calcium powder;
[0041] 2) Polyacrylonitrile (weight average molecular weight is 9000), butadiene rubber (weight average molecular weight is 2500), methacrylic acid-butadiene-styrene copolymer (weight average molecular weight is 8000), glycerol, ortho Isodecyl phthalate, activated alumina, loofah, petrolatum, aminopropyltriethoxysilane, bagasse, dicumyl peroxide, paraffin, silicon carbide whiskers, and activated calcium ash powder according to 100: 26: 44: 38: 72: 10: 16: 26: 58: 37: 45: 32: 0.6: 17 weight ratio mixing, melting at 218 °C for 70mim, cooling and molding at 13 °C to obtain modified polypropylene Nitrile A1.
Embodiment 2
[0043] 1) Under the condition of a negative pressure of -3MPa in vacuum, ash calcium powder (particle size is 0.4mm), trioctyl ammonium methyl hydrogen sulfate and hydrochloric acid solution (concentration is 25% by weight) according to 100:25: Mix at 150°C and perform activation treatment at 78°C for 3 hours, then filter the filter cake to obtain activated ash calcium powder;
[0044] 2) Polyacrylonitrile (weight-average molecular weight is 8000), butadiene rubber (weight-average molecular weight is 2000), methacrylic acid-butadiene-styrene copolymer (weight-average molecular weight is 7000), glycerol, ortho Isodecyl phthalate, activated alumina, loofah, petrolatum, aminopropyltriethoxysilane, bagasse, dicumyl peroxide, paraffin, silicon carbide whiskers, and activated calcium ash powder according to 100: 25: 40: 34: 66: 9: 14: 24: 55: 35: 41: 29: 0.2: 15 weight ratio mixing, melting at 215 °C for 60mim, cooling and molding at 10 °C to obtain modified polypropylene Nitrile A...
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