CN103187128A - Photoelectric composite medium-voltage trailing cable with rated voltage of 12/20kV-26/35kV for mine and preparation process of cable - Google Patents

Abstract

The invention discloses a photoelectric composite medium-voltage trailing cable with rated voltage of 12/20kV-26/35kV for a mine and a preparation process of the cable. The medium-voltage trailing cable comprises a photoelectric unit, a ground wire core and at least three power line core conductors; and according to a formula, an inner sheath layer and an outer sheath layer comprise the following materials of 35-45 percent of chloroprene rubber 320F, 0.9-1.1 percent of tetramethyl thiuram disulfide, 0.45-0.55 percent of 2-thiobenthothiazole, 0.45-0.55 percent of 2-mercapto benzimidazole, 0.35-0.45 percent of N,N'-bi(beta-naphthyl) p-phenylenediamine, 0.5-0.7 percent of stearic acid, 4.5-5.5 percent of dioctyl sebacate, 0.9-1.1 percent of magnesium oxide, 0.9-1.1 percent of zinc oxide, 7-9 percent of a composite flame retardant, 4.5-5.5 percent of tricresyl phosphate, 17-23 percent of highly abrasion-resistant carbon black, 5.5-6.5 percent of talcum powder serving as a filling agent and 10-12 percent of calcium carbonate serving as a filling agent. According to the photoelectric composite medium-voltage trailing cable, the power transmission and signal transmission performances at the environmental temperature of 40 DEG C below zero to 80 DEG C are realized, and the ultraviolet resistance, low temperature resistance, wear resistance and ageing resistance are improved.

Description

Press trailing cable and preparation technology during the mining photoelectricity of rated voltage 12/20kV ~ 26/35kV is compound

Technical field

The present invention relates to the compound middle trailing cable of pressing of mining photoelectricity, also relate to the compound middle preparation technology who presses trailing cable of this mining photoelectricity.

Background technology

Press trailing cable to be applicable to the application scenario of high mechanical stress during mining photoelectricity is compound, mainly use large-scale shield machine, rail mounted gantry crane, stacker-reclaimer, phase shifting transformer and other heavy lift equipments, there is following technical problem in existing product:

1. product is that the open air is laid, usually can under severe environmental conditions, use, as: expose to the sun and rain for a long time, day sudden and violent night is cold, frost and snow is freezing, ultraviolet, ozone, etc. the erosion of natural conditions, the performance suppression ratio is very fast, useful life is shorter.

2. cable is between the operating period, and cable must bear stretching resistance, reverse and bent rich fatigue, and it is very fast to cause insulation and sheath material performance to descend, and useful life is shorter.At present this type of cable average half a year to one year must be with changing once; It is not too high pressing the trailing cable material property during present mining photoelectricity is compound.

3. the compound middle trailing cable processing technology of pressing of mining photoelectricity is very complicated: light unit oversheath adopts thermoset rubber to extrude does not have good method to guarantee optical fiber property at present; Because the normal ambient operating temperature of optical fiber be-40 ℃ ~ 70 ℃, and rubber when extruding normal temperature be 150 ℃ ~ 200 ℃, the time is 10 ~ 20min, so the very difficult assurance of curing tube environment optical fiber properties; Conductor wire core and light unit stranding are more rambunctious, and this can have influence on the useful life of the compound middle pressure trailing cable of mining photoelectricity.

4. the compound middle trailing cable of pressing of mining photoelectricity requires than higher sheath material, and the tensile strength of cable, resistance to low temperature, ageing-resistant performance, UV resistant etc. performance is relatively all poor.

Summary of the invention

First purpose of the present invention provides the compound middle trailing cable of pressing of the mining photoelectricity of a kind of rated voltage 12/20kV ~ 26/35kV, it has realized the following electric power transfer of ambient temperature-40 ℃ ~ 80 ℃ and signal transmission performance simultaneously, UV resistant, low temperature resistant, wear-resisting, ageing-resistant performance had both been improved, solved also that trailing cable pulls for a long time, flexural fatigue causes the problem that descends useful life, thereby prolonged useful life;

Second purpose of the present invention provides the compound middle preparation technology who presses trailing cable of above-mentioned mining photoelectricity.

For achieving the above object, the technical solution used in the present invention is: press trailing cable during the mining photoelectricity of a kind of rated voltage 12/20kV ~ 26/35kV is compound, described pressure trailing cable comprise photovoltaic element, core and at least 3 power line core conductors, a restrictive coating be coated on described photovoltaic element, core and at least 3 power line core conductor outer surfaces; Described restrictive coating comprises inner restrictive coating and external sheath layer, is provided with the braiding reinforced layer between this inner restrictive coating and the external sheath layer, and described inner restrictive coating and external sheath layer are made up of the component of following weight percent content:

Chlorine neoprene rubber 320F 35 ~ 45%,

Tetramethylthiuram disulfide 0.9 ~ 1.1%,

2-thiol benzothiazole 0.45 ~ 0.55%,

2-mercaptobenzimidazole 0.45 ~ 0.55%,

N, N'-two (betanaphthyl) p-phenylenediamine (PPD) 0.35 ~ 0.45%,

Hard ester acid 0.5 ~ 0.7%,

Di-n-octyl sebacate 4.5 ~ 5.5%,

Magnesium oxide 0.9 ~ 1.1%,

Zinc oxide 0.9 ~ 1.1%,

Composite flame-retardant agent 7 ~ 9%,

Tricresyl phosphate 4.5 ~ 5.5%,

High wear-resistant carbon black 17 ~ 23%,

Talcum powder 5.5 ~ 6.5%,

Calcium carbonate 10 ~ 12%.

Press the preparation technology of trailing cable during above-mentioned mining photoelectricity is compound, the preparation technology of described inner restrictive coating and external sheath layer may further comprise the steps:

Step 1. with described neoprene rubber 320F 45% ~ 55% mixing 5min ~ 6min in 100 ℃ ~ 120 ℃ banburies, mixing even;

Step 2. in described banbury, add described hard ester acid 0.2% ~ 0.6%, zinc oxide 1% ~ 2%, magnesium oxide 1%-2%, high wear-resistant carbon black (N330) 20% ~ 22%, tricresyl phosphate (TCP) 4% ~ 6%, composite flame-retardant agent 5% ~ 8% again, as the talcum powder 5% ~ 8% of filler, as calcium carbonate 10% ~ 15%, the N of filler, N'-two (betanaphthyl) p-phenylenediamine (PPD) (antioxidant D NP) 0.2% ~ 0.5%, 2-mercaptobenzimidazole (antioxidant MB) 0.5% ~ 1.0% mixing 2min ~ 3min;

Step 3. then, in described banbury, add described di-n-octyl sebacate (DOS) 4% ~ 6%, mixing 1min ~ 5min;

Step 4. add described tetramethylthiuram disulfide (TMTD) 0.5% ~ 1%, 2-thiol benzothiazole (captax) 0.5% ~ 1.0% in described banbury again, mixing 0.5min ~ 1.5min then, discharges glue stuff compounding;

Step 5. with described glue stuff compounding thin-pass 1 ~ 2 time in mill, put glue simultaneously 2 ~ 3 times, then open the bar slice at tri-roll press machine, the rubber page or leaf of output is through the chill roll cooling, cross the talcum powder case after, namely make finished product.

Because the utilization of technique scheme, the present invention compared with prior art has following advantage:

Press trailing cable during the mining photoelectricity of the present invention is compound, it adopts 35 ~ 45% neoprene rubber 320F to make base-material, by add 0.9 ~ 1.1% tetramethylthiuram disulfide, as 0.45 ~ 0.55%2-thiol benzothiazole of promoter, as 0.45 ~ 0.55% 2-mercaptobenzimidazole of age resistor and 0.35 ~ 0.45% N, N'-two (betanaphthyl) p-phenylenediamine (PPD), synergy improves UV resistant, low temperature resistant, wear-resisting, ageing-resistant performance, solved also that trailing cable pulls for a long time, flexural fatigue causes the problem that descends useful life, thereby prolonged useful life; Secondly, in the invention special formulation, add 7 ~ 9% composite flame-retardant agents, guaranteed the following electric power transfer of ambient temperature-40 ℃ ~ 80 ℃ and signal transmission performance simultaneously, improve the fire resistance of trailing cable.

Description of drawings

Accompanying drawing 1 is the compound middle trailing cable structural representation of pressing of the mining photoelectricity of the present invention.

In the above accompanying drawing: 1, photovoltaic element; 2, core; 3, power line core conductor; 4, restrictive coating; 41, inner restrictive coating; 42, external sheath layer; 5, braiding reinforced layer.

Embodiment

Embodiment 1: press trailing cable during the mining photoelectricity of a kind of rated voltage 12/20kV～26/35kV is compound, described pressure trailing cable comprise photovoltaic element 1, core 2 and at least 3 power line core conductor 3, one restrictive coatings 4 be coated on described photovoltaic element 1, core 2 and at least 3 power line core conductor 3 outer surfaces; Described restrictive coating 4 comprises inner restrictive coating 41 and external sheath layer 42, is provided with braiding reinforced layer 5 between this inner restrictive coating 41 and the external sheath layer 42, and described inner restrictive coating 41 and external sheath layer 42 are formed as shown in table 1 by the component of following weight percent content:

Table 1

The preparation technology of above-mentioned inner restrictive coating and external sheath layer may further comprise the steps:

Step 1. with described neoprene rubber 320F45%～55% mixing 5min～6min in 100 ℃～120 ℃ banburies, mixing even;

Step 2. in described banbury, add described hard ester acid 0.2%～0.6%, zinc oxide 1%～2%, magnesium oxide 1%-2%, high wear-resistant carbon black (N330) 20%～22%, tricresyl phosphate (TCP) 4%～6%, composite flame-retardant agent 5%～8% again, as the talcum powder 5%～8% of filler, as calcium carbonate 10%～15%, the N of filler, N'-two (betanaphthyl) p-phenylenediamine (PPD) (antioxidant D NP) 0.2%～0.5%, 2-mercaptobenzimidazole (antioxidant MB) 0.5%～1.0% mixing 2min～3min;

Step 3. then, in described banbury, add described di-n-octyl sebacate (DOS) 4%～6%, mixing 1min～5min;

Step 4. add described tetramethylthiuram disulfide (TMTD) 0.5%～1%, 2-thiol benzothiazole (captax) 0.5%～1.0% in described banbury again, mixing 0.5min～1.5min then, discharges glue stuff compounding;

Step 5. with described glue stuff compounding thin-pass 1～2 time in mill, put glue simultaneously 2～3 times, then open the bar slice at tri-roll press machine, the rubber page or leaf of output is through the chill roll cooling, cross the talcum powder case after, namely make finished product.

Press trailing cable during the mining photoelectricity of this examples preparation is compound, the performance detection data are as shown in table 2:

Press the trailing cable performance index during table 2 photoelectricity is compound

Sequence number	Performance project	Unit	Representative value
				1	Mechanical performance before aging
1.1	Tensile strength	N/ mm 2	14.0
				1.2	Elongation at break	%	422
2	The air-oven aged properties
				2.1	The aging condition temperature	℃	120±2
	Time	H	7×24
				2.2	The tensile strength rate of change	%	-11
2.3	The elongation at break rate of change	%	-15
				3	Hot elongation test
3.1	The experimental condition temperature	℃	200±3
					The load time	Min	15
	Mechanical stress	N/cm 2	20
				3.2	Percentage elongation under the load	%	65
3.3	Permanent elongation under the load	%	2
				4	The immersion oil test
4.1	The aging condition temperature	℃	100±2
					Time	H	24
4.2	The tensile strength rate of change	%	-15
				4.3	The elongation at break rate of change	%	-20
5	The cryogenic tensile test
				5.1	Test temperature	℃	-42±2
5.2	Test duration	H	4
				5.3	Elongation at break	%	40

To sum up, press trailing cable during the mining photoelectricity of the present invention is compound, it adopts 40% ~ 50% neoprene rubber 320F to make base-material, by add 0.5% ~ 1.0% tetramethylthiuram disulfide, as 0.5% ~ 1.0%2-thiol benzothiazole of promoter, as 0.5% ~ 1.0%2-mercaptobenzimidazole and the 0.2% ~ 0.5%N of age resistor, N'-two (betanaphthyl) p-phenylenediamine (PPD), synergy improves UV resistant, low temperature resistant, wear-resisting, ageing-resistant performance, solved also that trailing cable pulls for a long time, flexural fatigue causes the problem that descends useful life, thereby prolonged useful life; Secondly, in the invention special formulation, add 5% ~ 8% composite flame-retardant agent, guaranteed the following electric power transfer of ambient temperature-40 ℃ ~ 80 ℃ and signal transmission performance simultaneously, improve the fire resistance of trailing cable.

Above-described embodiment only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit essence is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.

Claims (2)

1. the mining photoelectricity of rated voltage 12/20kV ~ 26/35kV is pressed trailing cable in compound, described pressure trailing cable comprise photovoltaic element (1), core (2) and at least 3 power line core conductors (3), a restrictive coating (4) be coated on described photovoltaic element (1), core (2) and at least 3 power line core conductors (3) outer surface; It is characterized in that: described restrictive coating (4) comprises inner restrictive coating (41) and external sheath layer (42), be provided with braiding reinforced layer (5) between this inner restrictive coating (41) and the external sheath layer (42), described inner restrictive coating (41) and external sheath layer (42) are made up of the component of following weight percent content:

Neoprene rubber 320F 35 ~ 45%,

Tetramethylthiuram disulfide 0.9 ~ 1.1%,

2-thiol benzothiazole 0.45 ~ 0.55%,

2-mercaptobenzimidazole 0.45 ~ 0.55%,

N, N'-two (betanaphthyl) p-phenylenediamine (PPD) 0.35 ~ 0.45%,

Hard ester acid 0.5 ~ 0.7%,

Di-n-octyl sebacate 4.5 ~ 5.5%,

Magnesium oxide 0.9 ~ 1.1%,

Zinc oxide 0.9 ~ 1.1%,

Composite flame-retardant agent 7 ~ 9%,

Tricresyl phosphate 4.5 ~ 5.5%,

High wear-resistant carbon black 17 ~ 23%,

Talcum powder 5.5 ~ 6.5%,

Calcium carbonate 10 ~ 12%.

2. photoelectricity is pressed the preparation technology of trailing cable in compound according to claim 1, and it is characterized in that: the preparation technology of described inner restrictive coating (41) and external sheath layer (42) may further comprise the steps:

Step 1. with described neoprene rubber 320F 40% ~ 55% mixing 5min ~ 6min in 100 ℃ ~ 120 ℃ banburies, mixing even;

Step 2. in described banbury, add described hard ester acid 0.2% ~ 0.6%, zinc oxide 1% ~ 2%, magnesium oxide 1%-2%, high wear-resistant carbon black (N330) 20% ~ 22%, tricresyl phosphate (TCP) 4% ~ 6%, composite flame-retardant agent 5% ~ 8% again, as the talcum powder 5% ~ 8% of filler, as calcium carbonate 10% ~ 15%, the N of filler, N'-two (betanaphthyl) p-phenylenediamine (PPD) (antioxidant D NP) 0.2% ~ 0.5%, 2-mercaptobenzimidazole (antioxidant MB) 0.5% ~ 1.0% mixing 2min ~ 3min;

Step 3. then, in described banbury, add described di-n-octyl sebacate (DOS) 4% ~ 6%, mixing 1min ~ 5min;

Step 4. add described tetramethylthiuram disulfide (TMTD) 0.5% ~ 1%, 2-thiol benzothiazole (captax) 0.5% ~ 1.0% in described banbury again, mixing 0.5min ~ 1.5min then, discharges glue stuff compounding;

Step 5. with described glue stuff compounding thin-pass 1 ~ 2 time in mill, put glue simultaneously 2 ~ 3 times, then open the bar slice at tri-roll press machine, the rubber page or leaf of output is through the chill roll cooling, cross the talcum powder case after, namely make finished product.

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