CN103943254A - Intrinsic safety type silicon rubber insulated cable with Y-shaped nylon framework - Google Patents

Abstract

The invention discloses an intrinsic safety type silicon rubber insulated cable with a Y-shaped nylon framework. A cable core comprises the Y-shaped nylon framework with a hollow structure, a plurality of small holes are evenly formed in the Y-shaped nylon framework, a drainage wire is arranged at the center of the Y-shaped nylon framework, a control wire core is respectively arranged two gaps of the Y-shaped nylon framework, a ground wire core is arranged in the other gap of the Y-shaped nylon framework and comprises a fan-shaped conductor, and the control wire core comprises two round conductors. The cable core is sequentially wrapped by a wrapping layer, a copper tape braided shielding layer and an outer sheath. The intrinsic safety type silicon rubber insulated cable adopts the Y-shaped nylon framework with the hollow structure, and the Y-shaped nylon framework is evenly provided with a plurality of small holes, so that the drainage wire can lead out current of any one leaked wire core, the using safety of the cable can be ensured, and the firmness and stability of the cable can be also improved.

Description

With the intrinsic safety type silicon rubber insulated cable of Y shape polyamide skeleton

Technical field

The present invention relates generally to field of cables, relates in particular to a kind of intrinsic safety type silicon rubber insulated cable with Y shape polyamide skeleton.

Background technology

Existing cable comprises cable conductor, cable insulation, restrictive coating, insulation and sheath adopt rubber insulation and eraser sheath material, and the need of production of rubber insulation and sheath first refines glue, also need be in curing tube sulfuration its due mechanical performance of guarantee afterwards after Rubber Extruder is extruded, and aborning, if process parameter control is bad, also there will be and owe sulphur, the problems such as over cure and conductor oxidation blackout, the impact of factors, cause the production cost of cable large, the problems such as the production cycle is long, in addition because cable does not have skeleton, its fastness, durability is all poor.

Traditional cable jacket exists poor heat resistance, the poor shortcoming of impact resistance, causes at high temperature easily softening, and under high impact forces, easily ftractures, and affects the useful life of cable.

Summary of the invention

The object of the invention is exactly the defect in order to make up prior art, and a kind of intrinsic safety type silicon rubber insulated cable with Y shape polyamide skeleton is provided.Cable jacket thermal endurance of the present invention and good impact resistance, the useful life of prolongation cable.

The present invention is achieved by the following technical solutions:

A kind of intrinsic safety type silicon rubber insulated cable with Y shape polyamide skeleton, include cable core, it is characterized in that: cable core includes the Y shape polyamide skeleton of hollow structure, on Y shape polyamide skeleton, evenly offer some apertures, the center of Y shape rubber skeleton is provided with drainage thread, in wherein two spaces of Y shape polyamide skeleton, be respectively equipped with one and control core, in another space of Y shape rubber skeleton, be provided with a ground core, ground core includes by more than seven tinned copper wire and carries out the sector conductor that stranded extruding forms, sector conductor is wrapped with silicone rubber insulation layer, control core and include two round conductors, be wrapped in the silicone rubber insulation layer outside round conductor, two round conductors and two tension ropes carry out stranded rear outsourcing mica layer, cable core outside is enclosed with lapping layer, copper strips woven shield, oversheath successively.

Described oversheath is made up of the raw material of following weight portion:: SEBS40-60, PA620-30, HIPS 15-25, SEBS-g-MAH10-15, C5 Petropols 5-10, white oil 4-6, zinc stearate 1-2, magnesium oxide 2-3, antioxidant 1010 0.5-1, precipitated calcium carbonate 10-15, sial carbon black 15-20, colliery powder 5-10, chlorinated paraffin wax 3-5, dibasic lead stearate 1-2, aluminium hydroxide 12-18, borax 10-15, di-2-ethylhexyl maleate 8-12, modified mineral filler 15-20, antioxidant 1076 1-2,

The preparation method of described modified mineral filler is as follows: a, take wollastonite, kaolin, pyrophillite, bauxite mix by weight 5-10:3-6:2-4:1, pulverize, cross 200-300 mesh sieve, 650-750 DEG C of calcining 20-30min, naturally cools to room temperature, b, the complex mineral filler of above-mentioned calcination processing is added water to pull an oar and make the suspension that concentration is 35-45%, the hydrochloric acid solution that is 15-20% by concentration regulates PH to 4-5, heating water bath is to 70-80 DEG C, 1500-2000rpm speed lapping 10-15min, then be neutralized to neutrality with the sodium hydroxide solution that concentration is 10-15%, leave standstill 20-30min, filter, distilled water washing 2-3 time for filter residue, after oven dry, add in mixer, under 500-1000rpm high-speed stirred, get the methoxy poly (ethylene glycol) monomethacrylates that is equivalent to complex mineral filler weight 3-5%, the Di(dioctylpyrophosphato) ethylene titanate of 0.5-1%, after mixing, the poly of 2-4% slowly adds in complex mineral filler with vaporific or droplet form, at 40-60 DEG C of temperature, stir 10-20min, dry, after the complex mineral filler that the zinc pyrophosphate of the ethylene propylene diene rubber of c, the ethylene-vinyl acetate copolymer of getting the TPUE, the 15-20% that are equivalent to complex mineral filler weight 30-40%, 10-15%, the trifluoro propyl methyl-silicone oil of 3-5%, 1-2% is processed with step b mixes, together drop into double screw extruder and carry out melt blending, then extruding pelletization, naturally cool to room temperature, be modification complex mineral filler.

The preparation method of described oversheath, comprises the following steps:

(1) SEBS, PA6, HIPS, SEBS-g-MAH are dropped in kneader and mixed, then add di-2-ethylhexyl maleate, chlorinated paraffin wax to stir a moment, after plasticizer is by basic absorption, add zinc stearate, magnesium oxide, dibasic lead stearate, make material temperature be raised to 60-70 DEG C by frictional heat, then add remaining raw material, when material temperature rises to 80-90 DEG C, material is discharged in cooling mixing machine and is lowered the temperature, discharging to below 40-50 DEG C time;

(2) above-mentioned kneaded raw material is dropped into extruding pelletization in double screw extruder, screw speed 50-100r/min, processing temperature is 160-190 DEG C;

(3) pack after metering.

Advantage of the present invention is:

The present invention has adopted the Y shape rubber skeleton of hollow structure, on Y shape rubber skeleton, evenly offer some apertures, drainage thread can be gone out the electric current drainage of any electric leakage core, both ensured the safety in utilization of cable, increased again fastness, the stability of cable.

Oversheath material of the present invention has excellent thermal endurance and impact resistance, and its vicat softening point temperature is 150 DEG C, and impact strength is 25-30KJ/m2, and has the performances such as good electrical insulating property, flexibility, toughness, plasticity, weatherability, chemicals-resistant,

Brief description of the drawings

Fig. 1 is structural representation of the present invention.

Embodiment

As shown in Figure 1, a kind of intrinsic safety type silicon rubber insulated cable with Y shape polyamide skeleton, include cable core, cable core includes the Y shape polyamide skeleton 1 of hollow structure, on Y shape polyamide skeleton 1, evenly offer some apertures 2, the center of Y shape rubber skeleton is provided with drainage thread 3, in wherein two spaces of Y shape polyamide skeleton 1, be respectively equipped with one and control core, in another space of Y shape rubber skeleton 1, be provided with a ground core, ground core includes by more than seven tinned copper wire and carries out the sector conductor 4 that stranded extruding forms, sector conductor 4 is wrapped with silicone rubber insulation layer 5, control core and include two round conductors 6, be wrapped in the silicone rubber insulation layer 7 outside round conductor 6, two round conductors 6 and two tension ropes 8 carry out stranded rear outsourcing mica layer 9, cable core outside is enclosed with lapping layer 10, copper strips woven shield 11, oversheath 12 successively.

Oversheath 12 is made up of the raw material of following weight portion: SEBS50, PA630, HIPS20, SEBS-g-MAH10, C5 Petropols 8, white oil 5, zinc stearate 1.5, magnesium oxide 2, antioxidant 1010 0.8, precipitated calcium carbonate 12, sial carbon black 18, colliery powder 7, chlorinated paraffin wax 4, dibasic lead stearate 1.5, aluminium hydroxide 16, borax 12, di-2-ethylhexyl maleate 10, modified mineral filler 18, antioxidant 1076 1;

The preparation method of described modified mineral filler is as follows: a, take wollastonite, kaolin, pyrophillite, bauxite mix by weight 6:3:2:1, pulverize, cross 200 mesh sieves, 650 DEG C of calcining 30min, naturally cool to room temperature, b, the complex mineral filler of above-mentioned calcination processing is added water, and to make concentration be 45% suspension in making beating, the hydrochloric acid solution that is 15% by concentration regulates PH to 5, heating water bath to 80 DEG C, 2000rpm speed lapping 10min, then be neutralized to neutrality with the sodium hydroxide solution that concentration is 15%, leave standstill 30min, filter, distilled water washing 2 times for filter residue, after oven dry, add in mixer, under 500rpm high-speed stirred, get the methoxy poly (ethylene glycol) monomethacrylates that is equivalent to complex mineral filler weight 3%, 0.5% Di(dioctylpyrophosphato) ethylene titanate, after mixing, 2% poly slowly adds in complex mineral filler with vaporific or droplet form, at 50 DEG C of temperature, stir 15min, dry, c, get be equivalent to TPUE, 15% ethylene-vinyl acetate copolymer, 10% ethylene propylene diene rubber, 4% the trifluoro propyl methyl-silicone oil of complex mineral filler weight 35%, complex mineral filler that 1.5% zinc pyrophosphate is processed with step b together drops into double screw extruder after mixing and carries out melt blending, then extruding pelletization, naturally cool to room temperature, be modification complex mineral filler.

The preparation method of oversheath 12, comprises the following steps:

(1) SEBS, PA6, HIPS, SEBS-g-MAH are dropped in kneader and mixed, then add di-2-ethylhexyl maleate, chlorinated paraffin wax to stir a moment, after plasticizer is by basic absorption, add zinc stearate, magnesium oxide, dibasic lead stearate, make material temperature be raised to 60-70 DEG C by frictional heat, then add remaining raw material, when material temperature rises to 80-90 DEG C, material is discharged in cooling mixing machine and is lowered the temperature, discharging to below 40-50 DEG C time;

(2) above-mentioned kneaded raw material is dropped into extruding pelletization in double screw extruder, screw speed 50-100r/min, processing temperature is 160-190 DEG C;

(3) pack after metering.

The results of property of the CABLE MATERIALS making after testing, is as following table:

。

Claims (3)

1. the intrinsic safety type silicon rubber insulated cable with Y shape polyamide skeleton, include cable core, it is characterized in that: cable core includes the Y shape polyamide skeleton of hollow structure, on Y shape polyamide skeleton, evenly offer some apertures, the center of Y shape rubber skeleton is provided with drainage thread, in wherein two spaces of Y shape polyamide skeleton, be respectively equipped with one and control core, in another space of Y shape rubber skeleton, be provided with a ground core, ground core includes by more than seven tinned copper wire and carries out the sector conductor that stranded extruding forms, sector conductor is wrapped with silicone rubber insulation layer, control core and include two round conductors, be wrapped in the silicone rubber insulation layer outside round conductor, two round conductors and two tension ropes carry out stranded rear outsourcing mica layer, cable core outside is enclosed with lapping layer, copper strips woven shield, oversheath successively.

2. require the intrinsic safety type silicon rubber insulated cable with Y shape polyamide skeleton described in 1 according to power, oversheath described in it is characterized in that is made up of the raw material of following weight portion: SEBS 40-60, PA6 20-30, HIPS 15-25, SEBS-g-MAH 10-15, C5 Petropols 5-10, white oil 4-6, zinc stearate 1-2, magnesium oxide 2-3, antioxidant 1010 0.5-1, precipitated calcium carbonate 10-15, sial carbon black 15-20, colliery powder 5-10, chlorinated paraffin wax 3-5, dibasic lead stearate 1-2, aluminium hydroxide 12-18, borax 10-15, di-2-ethylhexyl maleate 8-12, modified mineral filler 15-20, antioxidant 1076 1-2,

The preparation method of described modified mineral filler is as follows: a, take wollastonite, kaolin, pyrophillite, bauxite mix by weight 5-10:3-6:2-4:1, pulverize, cross 200-300 mesh sieve, 650-750 DEG C of calcining 20-30min, naturally cools to room temperature, b, the complex mineral filler of above-mentioned calcination processing is added water to pull an oar and make the suspension that concentration is 35-45%, the hydrochloric acid solution that is 15-20% by concentration regulates PH to 4-5, heating water bath is to 70-80 DEG C, 1500-2000rpm speed lapping 10-15min, then be neutralized to neutrality with the sodium hydroxide solution that concentration is 10-15%, leave standstill 20-30min, filter, distilled water washing 2-3 time for filter residue, after oven dry, add in mixer, under 500-1000rpm high-speed stirred, get the methoxy poly (ethylene glycol) monomethacrylates that is equivalent to complex mineral filler weight 3-5%, the Di(dioctylpyrophosphato) ethylene titanate of 0.5-1%, after mixing, the poly of 2-4% slowly adds in complex mineral filler with vaporific or droplet form, at 40-60 DEG C of temperature, stir 10-20min, dry, after the complex mineral filler that the zinc pyrophosphate of the ethylene propylene diene rubber of c, the ethylene-vinyl acetate copolymer of getting the TPUE, the 15-20% that are equivalent to complex mineral filler weight 30-40%, 10-15%, the trifluoro propyl methyl-silicone oil of 3-5%, 1-2% is processed with step b mixes, together drop into double screw extruder and carry out melt blending, then extruding pelletization, naturally cool to room temperature, be modification complex mineral filler.

3. the intrinsic safety type silicon rubber insulated cable with Y shape polyamide skeleton as claimed in claim 2, the preparation method of the jacket material described in it is characterized in that, comprises the following steps:

(1) SEBS, PA6, HIPS, SEBS-g-MAH are dropped in kneader and mixed, then add di-2-ethylhexyl maleate, chlorinated paraffin wax to stir a moment, after plasticizer is by basic absorption, add zinc stearate, magnesium oxide, dibasic lead stearate, make material temperature be raised to 60-70 DEG C by frictional heat, then add remaining raw material, when material temperature rises to 80-90 DEG C, material is discharged in cooling mixing machine and is lowered the temperature, discharging to below 40-50 DEG C time;

(2) above-mentioned kneaded raw material is dropped into extruding pelletization in double screw extruder, screw speed 50-100r/min, processing temperature is 180-220 DEG C;

(3) pack after metering.