CN105185439A - High-toughness, shock-absorption, wear-resistant and flame-retardant cable - Google Patents
High-toughness, shock-absorption, wear-resistant and flame-retardant cable Download PDFInfo
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- CN105185439A CN105185439A CN201510419998.3A CN201510419998A CN105185439A CN 105185439 A CN105185439 A CN 105185439A CN 201510419998 A CN201510419998 A CN 201510419998A CN 105185439 A CN105185439 A CN 105185439A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The invention discloses a high-toughness, shock-absorption, wear-resistant and flame-retardant cable. The high-toughness, shock-absorption, wear-resistant and flame-retardant cable includes a conductor, an insulating layer wrapping the conductor, a filling layer wrapping the insulating layer, a shielding layer wrapping the filling layer, an armoring layer wrapping the shielding layer and an outer sheath wrapping the armoring layer. The outer sheath is composed of the following raw materials in parts by weight: 50 to 60 parts of butadiene rubber; 20 to 25 parts of ethylene propylene diene monomer; 17 to 20 parts of acrylic resin; 12 to 15 parts of infiltrated aramid pulp material; 3.5 to 4.3 parts of sulphur powder; 1.6 to 2.2 parts of promoter DM; 1.4 to 1.8 parts of promoter TMTM; 5 to 8 parts of trioctyl trimellitate; 3 to 5 parts of tributyl citrate; 22 to 25 parts of zeolite powder; 16 to 19 parts of bentonite; 10 to 13 parts of furnace black; 3.5 to 3.8 parts of silane coupling agent K560; 12 to 16 parts of magnesium hydroxide; 7 to 10 parts of red phosphorus; 5 to 9 parts of melamine; 2 to 3 parts of antioxidant RD; and 1.8 to 2.2 parts of antioxidant AW.
Description
Technical field
The present invention relates to field of cable technology, particularly relate to a kind of high tenacity damping abrasion resistant fire blocking cable.
Background technology
Cable in use often faces the external interference such as flexion, vibrations, and this just needs the protective layer of cable---and oversheath has certain toughness and damping performance.Cable Chang Yinwei toughness is not enough or damping performance is poor causes cable failure thus cause potential safety hazard on the market.Meanwhile, along with the increase of power load, cable also needs to possess stronger fire resistance, and this series products fire resistance is on the market not good at present.
Summary of the invention
Based on the technical problem that background technology exists, the present invention proposes a kind of high tenacity damping abrasion resistant fire blocking cable, toughness is high, excellent and wear-resisting, the excellent flame retardancy of damping effect.
A kind of high tenacity damping abrasion resistant fire blocking cable that the present invention proposes, comprises the oversheath of conductor, the insulating barrier of coating conductor, the packed layer of coated insulation layer, the screen of coated packed layer, the armour of coated screen and coated armour;
Wherein the raw material of oversheath comprises by weight: butadiene rubber 50-60 part, ethylene propylene diene rubber 20-25 part, acrylic resin 17-20 part, infiltrate Fanglun slurry cake material 12-15 part, Cosan 3.5-4.3 part, altax 1.6-2.2 part, TM monex TM1.4-1.8 part, trioctyl trimellitate (TOTM) 5-8 part, tributyl citrate 3-5 part, zeolite powder 22-25 part, bentonite 16-19 part, furnace black 10-13 part, silane coupler K5603.5-3.8 part, magnesium hydroxide 12-16 part, red phosphorus 7-10 part, melamine 5-9 part, anti-aging agent RD 2-3 part, antioxidant A W1.8-2.2 part.
Preferably, in the raw material of oversheath, in butadiene rubber, cis Isosorbide-5-Nitrae content is 98-99%.
Preferably, in the raw material of oversheath, the weight ratio of butadiene rubber, ethylene propylene diene rubber, acrylic resin, infiltration Fanglun slurry cake material is 55-58:22-24:18-19:13-14.
Preferably, the raw material of oversheath comprises by weight: butadiene rubber 55-58 part, ethylene propylene diene rubber 22-24 part, acrylic resin 18-19 part, infiltrate Fanglun slurry cake material 13-14 part, Cosan 3.8-4.1 part, altax 1.8-2 part, TM monex TM1.5-1.6 part, trioctyl trimellitate (TOTM) 6-7 part, tributyl citrate 3.5-4 part, zeolite powder 23-24 part, bentonite 17-18 part, furnace black 11-12 part, silane coupler K5603.6-3.7 part, magnesium hydroxide 13-15 part, red phosphorus 8-9 part, melamine 6-8 part, anti-aging agent RD 2.2-2.5 part, antioxidant A W1.9-2.1 part.
Preferably, infiltration Fanglun slurry cake material preparation method in oversheath raw material is as follows: drop in the first process equipment containing 30-35 part acetone by 8-12 part Fanglun slurry cake by weight, raise the first process equipment temperature to 55-60 DEG C, insulation 2-3h, cooling, take out the Fanglun slurry cake after process, then use washed with de-ionized water, dry and obtain material A; Material A, 4-8 part hollow glass micropearl, the prefabricated infiltration material of 6-8 part, 15-18 part deionized water are dropped in the second process equipment, ultrasonic process 25-30min obtains material B, the frequency of ultrasonic process is 35-38KHz, the power of ultrasonic process is 1300-1500W, then left standstill by material B, drying obtains infiltrating Fanglun slurry cake material.
Preferably, in the infiltration Fanglun slurry cake material preparation method in oversheath raw material, prefabricated infiltration material is uniformly mixed is made by 5-7 part fourth pyrrole latex, 0.5-1 part styrene-butadiene latex, 1-2 part resorcinol-formaldehyde.
Preferably, infiltration Fanglun slurry cake material preparation method in oversheath raw material is as follows: drop in the first process equipment containing 30-35 part acetone by 8-12 part Fanglun slurry cake by weight, raise the first process equipment temperature to 55-60 DEG C, insulation 2-3h, cooling, take out the Fanglun slurry cake after process, then use washed with de-ionized water, dry and obtain material A; Material A, 4-8 part hollow glass micropearl, the prefabricated infiltration material of 6-8 part, 15-18 part deionized water are dropped in the second process equipment, ultrasonic process 25-30min obtains material B, the frequency of ultrasonic process is 35-38KHz, the power of ultrasonic process is 1300-1500W, then left standstill by material B, drying obtains infiltrating Fanglun slurry cake material.
In the present invention, the preparation method of oversheath is: butadiene rubber, ethylene propylene diene rubber, acrylic resin are carried out plasticating 12-15min on banbury; After continuing to add the mixing 7-10min of infiltration Fanglun slurry cake material, then add zeolite powder, bentonite, furnace black, silane coupler K560, magnesium hydroxide, red phosphorus, the mixing 13-15min of melamine; Add trioctyl trimellitate (TOTM), tributyl citrate, anti-aging agent RD, the mixing 10-13min of antioxidant A W again, then, after adding Cosan, altax, the mixing 5-8min of TM monex TM, be placed in vulcanizing press and carry out the oversheath that sulfuration obtains high tenacity damping abrasion resistant fire blocking cable.
The present invention, using the cis Isosorbide-5-Nitrae content butadiene rubber that is 98-99% and ethylene propylene diene rubber, acrylic resin, infiltration Fanglun slurry cake material as major ingredient, substantially increases intensity of the present invention, toughness, damping and anti-wear performance; Infiltrate in the preparation process of Fanglun slurry cake material, Fanglun slurry cake is dropped into acetone, heat up and be incubated rear cooling and clean oil stain, the impurity that can remove; And hollow glass micropearl, prefabricated infiltration material effectively can infiltrate after ultrasound exposure, isolate ppta-pulp fibre, improve the wettability of aramid fiber, reduce its specific area, thus alleviate Fanglun slurry cake and rubber mix and add the Fanglun slurry cake occurred man-hour and to tangle serious phenomenon, significantly improve toughness of the present invention and damping performance; Wherein prefabricated infiltration material can increase aramid fiber polarity on the one hand, greatly improves ppta-pulp fibre and the direct adhesive power of rubber; A skim can be formed on Fanglun slurry cake surface on the other hand, become bonding interface layer good between rubber matrix, combine closely with rubber matrix, thus strengthen intensity of the present invention, toughness, anti-wear performance and weather resistance further; Zeolite powder, bentonite, furnace black are as the interpolation of reinforcing filler, one is expand volume of the present invention, reduce cost, two is be evenly dispersed among the present invention under the effect of silane coupler K560, make the present invention when being subject to the External Force Actings such as friction, rubber molecule can be transferred to stressed on reinforcing filler rapidly, thus significantly improves anti-wear performance of the present invention; And add trioctyl trimellitate (TOTM), tributyl citrate, the solubility of reinforcing filler in major ingredient and dispersiveness can be improved, improve anti-wear performance of the present invention further; The interpolation of magnesium hydroxide, red phosphorus, melamine then substantially increases fire resistance of the present invention, wherein red phosphorus has strong dehydration, magnesium hydroxide dehydration crystallization heat absorption can be impelled when burning, significantly improving oxygen index thus flame retardant effect of the present invention is strengthened greatly; With the vulcanizing system that Cosan, altax, TM monex TM are formed, curingprocess rate of the present invention can be made fast, and compression is low, and damping effect is excellent; Anti-aging agent RD, antioxidant A W with the use of, then can significantly improve antioxygenic property of the present invention, extend useful life of the present invention.
Accompanying drawing explanation
Fig. 1 is the radial section structural representation of a kind of high tenacity damping abrasion resistant fire blocking cable that the present invention proposes.
Embodiment
Below, by specific embodiment, technical scheme of the present invention is described in detail.
Embodiment 1
As shown in Figure 1, Fig. 1 is the radial section structural representation of a kind of high tenacity damping abrasion resistant fire blocking cable that the present invention proposes.
With reference to Fig. 1, a kind of high tenacity damping abrasion resistant fire blocking cable that the present invention proposes, comprises the oversheath 6 of conductor 1, the insulating barrier 2 of coating conductor 1, the packed layer 3 of coated insulation layer 2, the screen 4 of coated packed layer 3, the armour 5 of coated screen 4 and coated armour 5;
Wherein the raw material of oversheath 6 comprises by weight: butadiene rubber 60 parts, ethylene propylene diene rubber 20 parts, acrylic resin 20 parts, infiltrate Fanglun slurry cake material 12 parts, Cosan 4.3 parts, altax 1.6 parts, TM monex TM1.8 part, trioctyl trimellitate (TOTM) 5 parts, tributyl citrate 5 parts, zeolite powder 22 parts, bentonite 19 parts, furnace black 10 parts, silane coupler K5603.8 part, magnesium hydroxide 12 parts, 10 parts, red phosphorus, melamine 5 parts, anti-aging agent RD 3 parts, antioxidant A W1.8 part; Wherein, in butadiene rubber, cis Isosorbide-5-Nitrae content is 99%;
Infiltrate Fanglun slurry cake material preparation method as follows: dropped in the first process equipment containing 35 parts of acetone by 8 parts of Fanglun slurry cakes by weight, raise the first process equipment temperature to 55 DEG C, insulation 3h, cooling, take out the Fanglun slurry cake after process, then use washed with de-ionized water, dry and obtain material A; Material A, 4 parts of hollow glass micropearls, 8 parts of prefabricated infiltration materials, 15 parts of deionized waters are dropped in the second process equipment, ultrasonic process 30min obtains material B, the frequency of ultrasonic process is 35KHz, the power of ultrasonic process is 1500W, then left standstill by material B, drying obtains infiltrating Fanglun slurry cake material; Wherein, system infiltration material is uniformly mixed is made by 5 parts of fourth pyrrole latexes, 1 part of styrene-butadiene latex, 1 part of resorcinol-formaldehyde.
Embodiment 2
A kind of high tenacity damping abrasion resistant fire blocking cable that the present invention proposes, comprises the oversheath 6 of conductor 1, the insulating barrier 2 of coating conductor 1, the packed layer 3 of coated insulation layer 2, the screen 4 of coated packed layer 3, the armour 5 of coated screen 4 and coated armour 5;
Wherein the raw material of oversheath 6 comprises by weight: butadiene rubber 50 parts, ethylene propylene diene rubber 25 parts, acrylic resin 17 parts, infiltrate Fanglun slurry cake material 15 parts, Cosan 3.5 parts, altax 2.2 parts, TM monex TM1.4 part, trioctyl trimellitate (TOTM) 8 parts, tributyl citrate 3 parts, zeolite powder 25 parts, bentonite 16 parts, furnace black 13 parts, silane coupler K5603.5 part, magnesium hydroxide 16 parts, 7 parts, red phosphorus, melamine 9 parts, anti-aging agent RD 2 parts, antioxidant A W2.2 part; Wherein, in butadiene rubber, cis Isosorbide-5-Nitrae content is 98%;
Infiltrate Fanglun slurry cake material preparation method as follows: dropped in the first process equipment containing 30 parts of acetone by 12 parts of Fanglun slurry cakes by weight, raise the first process equipment temperature to 60 DEG C, insulation 2h, cooling, take out the Fanglun slurry cake after process, then use washed with de-ionized water, dry and obtain material A; Material A, 8 parts of hollow glass micropearls, 6 parts of prefabricated infiltration materials, 18 parts of deionized waters are dropped in the second process equipment, ultrasonic process 25min obtains material B, the frequency of ultrasonic process is 38KHz, the power of ultrasonic process is 1300W, then left standstill by material B, drying obtains infiltrating Fanglun slurry cake material; Wherein, system infiltration material is uniformly mixed is made by 7 parts of fourth pyrrole latexes, 0.5 part of styrene-butadiene latex, 2 parts of resorcinol-formaldehyde.
Embodiment 3
A kind of high tenacity damping abrasion resistant fire blocking cable that the present invention proposes, comprises the oversheath 6 of conductor 1, the insulating barrier 2 of coating conductor 1, the packed layer 3 of coated insulation layer 2, the screen 4 of coated packed layer 3, the armour 5 of coated screen 4 and coated armour 5;
Wherein the raw material of oversheath 6 comprises by weight: butadiene rubber 58 parts, ethylene propylene diene rubber 22 parts, acrylic resin 19 parts, infiltrate Fanglun slurry cake material 13 parts, Cosan 4.1 parts, altax 1.8 parts, TM monex TM1.6 part, trioctyl trimellitate (TOTM) 6 parts, tributyl citrate 4 parts, zeolite powder 23 parts, bentonite 18 parts, furnace black 11 parts, silane coupler K5603.7 part, magnesium hydroxide 13 parts, 9 parts, red phosphorus, melamine 6 parts, anti-aging agent RD 2.5 parts, antioxidant A W1.9 part; Wherein, in butadiene rubber, cis Isosorbide-5-Nitrae content is 99%;
Infiltrate Fanglun slurry cake material preparation method as follows: dropped in the first process equipment containing 35 parts of acetone by 8 parts of Fanglun slurry cakes by weight, raise the first process equipment temperature to 55 DEG C, insulation 3h, cooling, take out the Fanglun slurry cake after process, then use washed with de-ionized water, dry and obtain material A; Material A, 4 parts of hollow glass micropearls, 8 parts of prefabricated infiltration materials, 15 parts of deionized waters are dropped in the second process equipment, ultrasonic process 30min obtains material B, the frequency of ultrasonic process is 35KHz, the power of ultrasonic process is 1500W, then left standstill by material B, drying obtains infiltrating Fanglun slurry cake material; Wherein, system infiltration material is uniformly mixed is made by 5.5 parts of fourth pyrrole latexes, 0.8 part of styrene-butadiene latex, 1.2 parts of resorcinol-formaldehyde.
Embodiment 4
A kind of high tenacity damping abrasion resistant fire blocking cable that the present invention proposes, comprises the oversheath 6 of conductor 1, the insulating barrier 2 of coating conductor 1, the packed layer 3 of coated insulation layer 2, the screen 4 of coated packed layer 3, the armour 5 of coated screen 4 and coated armour 5;
Wherein the raw material of oversheath 6 comprises by weight: butadiene rubber 55 parts, ethylene propylene diene rubber 24 parts, acrylic resin 18 parts, infiltrate Fanglun slurry cake material 14 parts, Cosan 3.8 parts, altax 2 parts, TM monex TM1.5 part, trioctyl trimellitate (TOTM) 7 parts, tributyl citrate 3.5 parts, zeolite powder 24 parts, bentonite 17 parts, furnace black 12 parts, silane coupler K5603.6 part, magnesium hydroxide 15 parts, 8 parts, red phosphorus, melamine 8 parts, anti-aging agent RD 2.2 parts, antioxidant A W2.1 part; Wherein, in butadiene rubber, cis Isosorbide-5-Nitrae content is 98.5%;
Infiltrate Fanglun slurry cake material preparation method as follows: dropped in the first process equipment containing 30 parts of acetone by 12 parts of Fanglun slurry cakes by weight, raise the first process equipment temperature to 60 DEG C, insulation 2h, cooling, take out the Fanglun slurry cake after process, then use washed with de-ionized water, dry and obtain material A; Material A, 8 parts of hollow glass micropearls, 6 parts of prefabricated infiltration materials, 18 parts of deionized waters are dropped in the second process equipment, ultrasonic process 25min obtains material B, the frequency of ultrasonic process is 38KHz, the power of ultrasonic process is 1300W, then left standstill by material B, drying obtains infiltrating Fanglun slurry cake material; Wherein, system infiltration material is uniformly mixed is made by 6 parts of fourth pyrrole latexes, 0.6 part of styrene-butadiene latex, 1.6 parts of resorcinol-formaldehyde.
Carry out performance test to embodiment 1-4 gained cable, with commercially available abrasion resistant fire blocking cable for control group, result is as follows:
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (7)
1. a high tenacity damping abrasion resistant fire blocking cable, it is characterized in that, comprise conductor (1), the insulating barrier (2) of coating conductor (1), the packed layer (3) of coated insulation layer (2), the screen (4) of coated packed layer (3), the armour (5) of coated screen (4) and the oversheath (6) of coated armour (5);
Wherein the raw material of oversheath (6) comprises by weight: butadiene rubber 50-60 part, ethylene propylene diene rubber 20-25 part, acrylic resin 17-20 part, infiltrate Fanglun slurry cake material 12-15 part, Cosan 3.5-4.3 part, altax 1.6-2.2 part, TM monex TM1.4-1.8 part, trioctyl trimellitate (TOTM) 5-8 part, tributyl citrate 3-5 part, zeolite powder 22-25 part, bentonite 16-19 part, furnace black 10-13 part, silane coupler K5603.5-3.8 part, magnesium hydroxide 12-16 part, red phosphorus 7-10 part, melamine 5-9 part, anti-aging agent RD 2-3 part, antioxidant A W1.8-2.2 part.
2. high tenacity damping abrasion resistant fire blocking cable according to claim 1, it is characterized in that, in the raw material of oversheath (6), in butadiene rubber, cis Isosorbide-5-Nitrae content is 98-99%.
3. high tenacity damping abrasion resistant fire blocking cable according to claim 1 or 2, it is characterized in that, in the raw material of oversheath (6), the weight ratio of butadiene rubber, ethylene propylene diene rubber, acrylic resin, infiltration Fanglun slurry cake material is 55-58:22-24:18-19:13-14.
4. high tenacity damping abrasion resistant fire blocking cable according to any one of claim 1-3, it is characterized in that, the raw material of oversheath (6) comprises by weight: butadiene rubber 55-58 part, ethylene propylene diene rubber 22-24 part, acrylic resin 18-19 part, infiltrate Fanglun slurry cake material 13-14 part, Cosan 3.8-4.1 part, altax 1.8-2 part, TM monex TM1.5-1.6 part, trioctyl trimellitate (TOTM) 6-7 part, tributyl citrate 3.5-4 part, zeolite powder 23-24 part, bentonite 17-18 part, furnace black 11-12 part, silane coupler K5603.6-3.7 part, magnesium hydroxide 13-15 part, red phosphorus 8-9 part, melamine 6-8 part, anti-aging agent RD 2.2-2.5 part, antioxidant A W1.9-2.1 part.
5. high tenacity damping abrasion resistant fire blocking cable according to any one of claim 1-4, it is characterized in that, infiltration Fanglun slurry cake material preparation method in oversheath (6) raw material is as follows: drop in the first process equipment containing 30-35 part acetone by 8-12 part Fanglun slurry cake by weight, raise the first process equipment temperature to 55-60 DEG C, insulation 2-3h, cooling, takes out the Fanglun slurry cake after process, then use washed with de-ionized water, dry and obtain material A; Material A, 4-8 part hollow glass micropearl, the prefabricated infiltration material of 6-8 part, 15-18 part deionized water are dropped in the second process equipment, ultrasonic process 25-30min obtains material B, the frequency of ultrasonic process is 35-38KHz, the power of ultrasonic process is 1300-1500W, then left standstill by material B, drying obtains infiltrating Fanglun slurry cake material.
6. high tenacity damping abrasion resistant fire blocking cable according to claim 5, it is characterized in that, in infiltration Fanglun slurry cake material preparation method in oversheath (6) raw material, prefabricated infiltration material is uniformly mixed is made by 5-7 part fourth pyrrole latex, 0.5-1 part styrene-butadiene latex, 1-2 part resorcinol-formaldehyde.
7. high tenacity damping abrasion resistant fire blocking cable according to any one of claim 1-6, it is characterized in that, infiltration Fanglun slurry cake material preparation method in oversheath (6) raw material is as follows: drop in the first process equipment containing 30-35 part acetone by 8-12 part Fanglun slurry cake by weight, raise the first process equipment temperature to 55-60 DEG C, insulation 2-3h, cooling, takes out the Fanglun slurry cake after process, then use washed with de-ionized water, dry and obtain material A; Material A, 4-8 part hollow glass micropearl, the prefabricated infiltration material of 6-8 part, 15-18 part deionized water are dropped in the second process equipment, ultrasonic process 25-30min obtains material B, the frequency of ultrasonic process is 35-38KHz, the power of ultrasonic process is 1300-1500W, then left standstill by material B, drying obtains infiltrating Fanglun slurry cake material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510419998.3A CN105185439A (en) | 2015-07-15 | 2015-07-15 | High-toughness, shock-absorption, wear-resistant and flame-retardant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510419998.3A CN105185439A (en) | 2015-07-15 | 2015-07-15 | High-toughness, shock-absorption, wear-resistant and flame-retardant cable |
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| CN105185439A true CN105185439A (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510419998.3A Pending CN105185439A (en) | 2015-07-15 | 2015-07-15 | High-toughness, shock-absorption, wear-resistant and flame-retardant cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108425636A (en) * | 2018-03-06 | 2018-08-21 | 信达科创（唐山）石油设备有限公司 | A kind of continuous umbilical of intelligence and the intelligent oil extraction system comprising the umbilical |
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| CN103842444A (en) * | 2011-09-30 | 2014-06-04 | 株式会社Adeka | Flame-retardant resin composition and electric wire using same |
| CN103985460A (en) * | 2014-04-11 | 2014-08-13 | 安徽省赛华电缆有限公司 | Computer shield cable with good compression resisting performance |
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| CN101265307A (en) * | 2007-03-16 | 2008-09-17 | 沅鸿股份有限公司 | Method for manufacturing shock-absorption raw material |
| CN103842444A (en) * | 2011-09-30 | 2014-06-04 | 株式会社Adeka | Flame-retardant resin composition and electric wire using same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108425636B (en) * | 2018-03-06 | 2024-02-20 | 信达科创（唐山）石油设备有限公司 | Intelligent continuous pipe cable and intelligent oil extraction system comprising same |
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Application publication date: 20151223 |