CN109749332A - A kind of medium and high voltage cable insulation thermoplasticity semiconductive shieldin material and preparation method thereof - Google Patents
A kind of medium and high voltage cable insulation thermoplasticity semiconductive shieldin material and preparation method thereof Download PDFInfo
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- CN109749332A CN109749332A CN201811574647.XA CN201811574647A CN109749332A CN 109749332 A CN109749332 A CN 109749332A CN 201811574647 A CN201811574647 A CN 201811574647A CN 109749332 A CN109749332 A CN 109749332A
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Abstract
The invention discloses a kind of medium and high voltage cable insulation thermoplasticity semiconductive shieldin materials, which is characterized in that by weight, including following component part: 70-90 parts of matrix resin；10-30 parts of elastomer；20-35 parts of conductive black, 0.4-2.0 parts of antioxidant；0.3-1.0 parts of lubricant；0.4-1.0 parts of caking inhibiter.The invention also discloses preparation methods.The beneficial effects of the present invention are: the material has excellent low-temperature flexibility, good mechanical property, it is easily peeled off with after insulating layer co-extrusion, volume resistivity is 10~25 Ω cm, the advantages that having both high temperature resistant, can be recycled, is easy to process, the co-extrusion production of the power cable especially suitable for mesohigh PP insulation.
Description
Technical field
The present invention relates to cable semi-conductive shielding material fields, and in particular to a kind of medium and high voltage cable insulation thermoplasticity half
Conductive shield material and preparation method thereof.
Background technique
The XLPE material that middle high-pressure cable insulation system uses for thermosetting resin, exist not recoverable, do not meet
Environmental-friendly disadvantage, and the crosslinking process itself that uses has that energy consumption is high, low efficiency when manufacturing XLPE cable.Therefore, it develops
High temperature resistant, environmentally friendly thermoplastic insulation material become a new direction.And polypropylene (PP) is because it is with good
Electric property, heat resistance, long-term operating temperature are up to 90 DEG C, the hot spot just as excellent thermoplastic insulation material's research.
Currently, existing relevant enterprise develops the thermoplasticity PP insulating materials for middle-high voltage power cable both at home and abroad, be bound to demand
Adaptable medium and high voltage cable thermoplasticity shielding material therewith.
For 6KV and the above middle-high voltage power cable, since to apply voltage higher for outside, cable insulation inside/outside table at this time
Face tip that may be present or stomata all easily generate high-voltage tip discharging, cause partial discharge quantity excessively high and cable is caused to hit
Wear failure.Therefore, conductor thread core and insulation interlayer, insulating layer and sheath interlayer is required to add one layer respectively in Cable Construction Design
Semiconductive shielding layer is also inside and outside shielded layer, is in close contact each layer in cable, and the electric field on uniform insulation surface and shielding are outer
The interference of portion's electric field improves the service life of cable.
Generally requiring insulation shield is " peelable ", that is, requires shielding material to be not only closely coated on insulating layer
On, to be also easy to remove from insulating layer, and insulating layer will not be damaged.For the shielding material of thermoplasticity PP insulated cable,
Its processing conditions between insulation of inevitable requirement matches and non-crosslinked.Therefore using the resin of PP segment as shielding material
It is very important, but in order to consider rippability, the dosage of PP resin is appropriate.
Summary of the invention
In order to overcome drawbacks described above of the existing technology, one of the objects of the present invention is to provide one kind to be suitable for middle height
Voltage cable insulation thermoplasticity semiconductive shieldin material.
The second object of the present invention is to provide a kind of preparation of medium and high voltage cable insulation thermoplasticity semiconductive shieldin material
Method.
One of in order to achieve the object of the present invention, used technical solution is:
A kind of medium and high voltage cable insulation thermoplasticity semiconductive shieldin material, by weight, including following component part:
In a preferred embodiment of the invention, the matrix resin is polypropylene (PP) resin, random copolymer
(PPR) or any one in block copolymer (PPB) or two or more mixing.
In a preferred embodiment of the invention, the elastomer is that ethylene propylene diene rubber (EPDM) or ethylene-are pungent
The mixing of any one or two kinds in alkene copolymer (POE).
In a preferred embodiment of the invention, the antioxidant is any one in 1010,168,300 or two kinds
Above compound by a certain percentage.
In a preferred embodiment of the invention, the compound of the antioxidant is and compound proportion are as follows: compound is
When 1010/168, ratio is 1/2 or 1/1；When compound is 1010/300, ratio 1/2；When compound is 300/168, ratio
It is 1/1, when compound is 1010/168/300, ratio 1/1/1.
In a preferred embodiment of the invention, the lubricant is that polyethylene wax, polypropylene wax, atoleine are (white
Oil), calcium stearate, any one or two or more compounds by a certain percentage in barium stearate.
In a preferred embodiment of the invention, the compound and compound proportion of the lubricant are as follows: polypropylene wax/hard
Resin acid calcium=2/1.
In a preferred embodiment of the invention, the caking inhibiter is ethylene bis stearamide (EBS), erucic acid acyl
The mixing of amine, oleamide, any one or two kinds in stearmide.
One of in order to achieve the object of the present invention, used technical solution is:
A kind of medium and high voltage cable insulation preparation method of thermoplasticity semiconductive shieldin material, includes the following steps:
The mixtures of said components is added mixer melt blending at 180 DEG C~230 DEG C, banbury rotating speed is 45~
60r/min, mixing time are 15~20min, and the thermoplasticity semi-conductive shielding material of medium and high voltage cable insulation is made.
The beneficial effects of the present invention are:
The material has excellent low-temperature flexibility, is easily peeled off after good mechanical property, with insulating layer co-extrusion, volume electricity
The advantages that resistance rate is 10~25 Ω cm, has both high temperature resistant, can be recycled, is easy to process, especially suitable for mesohigh PP insulation
The co-extrusion of power cable produces.
Specific embodiment
Below with reference to specific example, technical scheme of the present invention will be further described.Specific example is further detailed
Illustrate the present invention, non-limiting protection scope of the present invention.
Embodiment 1:
1. by 140 grams of block polypropylenes (PPB) and ethylene-octene copolymer (POE) mixture (PP/POE=85/15),
28 grams of conductive black A, 1.4 grams of antioxidant 1010s, 0.7 gram of polypropylene wax lubricant, 0.98 gram of ethylene bis stearamide uniformly mix
It closes；
2. melt blending in mixer is added in the above mixture, smelting temperature is 190 DEG C, rotor speed 60r/min,
Mixing time is that 20min obtains semi-conductive shielding material.
Embodiment 2:
1. by 140 grams of block polypropylenes (PPB) and ethylene-octene copolymer (POE) mixture (PP/POE=80/20),
28 grams of conductive black A, 1.4 grams of antioxidant 1010s/168 mixtures, 0.7 gram of polypropylene wax lubricant, 1.4 grams of ethylene stearic bicine diesters
Amine uniformly mixes；
2. melt blending in mixer is added in the above mixture, smelting temperature is 190 DEG C, rotor speed 60r/min,
Mixing time is that 20min obtains semi-conductive shielding material.
Embodiment 3:
1. by 140 grams of block polypropylenes (PPB) and ethylene-octene copolymer (POE) mixture (PP/POE=80/20),
42 grams of conductive black B, 1.4 grams of antioxidant 1010s/168 mixtures, 0.84 gram of polyethylene wax lubricant, 0.98 gram of erucyl amide are equal
Even mixing；
2. melt blending in mixer is added in the above mixture, smelting temperature is 200 DEG C, rotor speed 60r/min,
Mixing time is that 20min obtains semi-conductive shielding material.
Embodiment 4:
By 140 grams of block polypropylenes (PPB) and ethylene-octene copolymer (POE) mixture (PP/POE=75/25), 42
Gram conductive black B, 1.4 grams of antioxidant 1010s/168 mixtures, 0.84 gram of polyethylene wax lubricant, 0.84 gram of erucyl amide are uniform
Mixing；
2. melt blending in mixer is added in the above mixture, smelting temperature is 200 DEG C, rotor speed 60r/min,
Mixing time is that 20min obtains semi-conductive shielding material.
Embodiment 5:
1. by 140 grams of block polypropylenes (PPB) and ethylene-octene copolymer (POE) mixture (PP/POE=80/20),
49 grams of conductive black C, 1.12 grams of antioxidant 1010s/168/300 mixture, 0.98 gram of polypropylene wax lubricant, 0.84 gram of tristearin
Amide uniformly mixes；
2. melt blending in mixer is added in the above mixture, smelting temperature is 210 DEG C, rotor speed 60r/min,
Mixing time is that 20min obtains semi-conductive shielding material.
Embodiment 6:
1. by 140 grams of block polypropylenes (PPB) and ethylene-octene copolymer (POE) mixture (PP/POE=70/30),
49 grams of conductive black C, 0.84 gram of antioxidant 1010/168/300 mixture, 0.84 gram of polypropylene wax lubricant, 0.84 gram of tristearin
Amide uniformly mixes；
2. melt blending in mixer is added in the above mixture, smelting temperature is 210 DEG C, rotor speed 60r/min,
Mixing time is that 20min obtains semi-conductive shielding material.
Embodiment 7:
1. by 140 grams of block polypropylenes (PPR) and ethylene propylene diene rubber (EPDM) mixture (PP/EPDM=70/30), 42
Gram conductive black B, 0.84 gram of antioxidant 1010/300 mixtures, 0.84 gram of calcium stearate lubricant, 0.98 gram of ethylene are double stearic
Amide uniformly mixes；
2. melt blending in mixer is added in the above mixture, smelting temperature is 180 DEG C, rotor speed 60r/min,
Mixing time is that 15min obtains semi-conductive shielding material.
Comparative example:
1. by 140 grams of block polypropylenes (PPB), 42 grams of conductive black B, 1.4 grams of antioxidant 1010s/168 mixtures, 0.84
Gram polyethylene wax lubricant, 0.84 gram of erucyl amide uniformly mix；
2. melt blending in mixer is added in the above mixture, smelting temperature is 200 DEG C, rotor speed 60r/min,
Mixing time is that 20min obtains semi-conductive shielding material.
The performance of semi-conductive shielding material prepared by embodiment 4,6 is listed in table 1.
The performance of 1 semi-conductive shielding material of table
Wherein, the comparative example in table 1 is individually to prepare semi-conductive shielding material using acrylic resin and carbon black,
Compared with Example 4, the mechanical property of material is unable to satisfy the requirement of standard to its performance, while low-temperature impact-resistant performance obviously drops
Low, peeling force has a degree of increase.
Therefore it can see by table 1, the resulting Semi-shielded material mechanical performance of the present invention is excellent, low-temperature good toughness, body
Product resistivity is lower, and the performance of material meets JB/T 10738-2007 to the performance requirement of thermoplasticity semi-conductive shielding material.
Claims (9)
1. a kind of medium and high voltage cable insulation thermoplasticity semiconductive shieldin material, which is characterized in that by weight, including such as the following group
At part:
2. a kind of medium and high voltage cable insulation thermoplasticity semiconductive shieldin material as described in claim 1, which is characterized in that described
Matrix resin be any one or two kinds in polypropylene (PP) resin, random copolymer (PPR) or block copolymer (PPB)
Above mixing.
3. a kind of medium and high voltage cable insulation thermoplasticity semiconductive shieldin material as described in claim 1, which is characterized in that described
Elastomer be any one or two kinds in ethylene propylene diene rubber (EPDM) or ethylene-octene copolymer (POE) mixing.
4. a kind of medium and high voltage cable insulation thermoplasticity semiconductive shieldin material as described in claim 1, which is characterized in that described
Antioxidant is any one or two or more compounds by a certain percentage in 1010,168,300.
5. a kind of medium and high voltage cable insulation thermoplasticity semiconductive shieldin material as claimed in claim 4, which is characterized in that described
The compound of antioxidant is and compound proportion are as follows: when compound is 1010/168, ratio is 1/2 or 1/1；Compound is 1010/
When 300, ratio 1/2；When compound is 300/168, ratio 1/1, when compound is 1010/168/300, ratio 1/1/
1。
6. a kind of medium and high voltage cable insulation thermoplasticity semiconductive shieldin material as described in claim 1, which is characterized in that described
Lubricant is polyethylene wax, polypropylene wax, atoleine (white oil), calcium stearate, any one or two kinds in barium stearate
Above compound by a certain percentage.
7. a kind of medium and high voltage cable insulation thermoplasticity semiconductive shieldin material as claimed in claim 6, which is characterized in that described
The compound and compound proportion of lubricant are as follows: polypropylene wax/calcium stearate=2/1.
8. a kind of medium and high voltage cable insulation thermoplasticity semiconductive shieldin material as described in claim 1, which is characterized in that described
Caking inhibiter is ethylene bis stearamide (EBS), erucyl amide, oleamide, any one or two kinds in stearmide it is mixed
It closes.
9. such as a kind of medium and high voltage cable insulation thermoplasticity semiconductive shieldin material as described in claim 1-8 any one of works as
Preparation method, which comprises the steps of: mixer is added at 180 DEG C~230 DEG C in the mixture of said components
Melt blending, banbury rotating speed are 45~60r/min, and mixing time is 15~20min, and the heat of medium and high voltage cable insulation is made
Plasticity semi-conductive shielding material.
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Cited By (7)
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| CN110330727A (en) * | 2019-07-29 | 2019-10-15 | 上海至正道化高分子材料股份有限公司 | A kind of mesohigh is with thermoplastic insulation material and preparation method thereof |
| CN111763374A (en) * | 2020-06-17 | 2020-10-13 | 江阴市海江高分子材料有限公司 | Semiconductive shielding material for polypropylene non-crosslinked cable and preparation method thereof |
| CN112280231A (en) * | 2020-10-14 | 2021-01-29 | 南方电网科学研究院有限责任公司 | Shielding material for polypropylene-based thermoplastic cable and preparation method thereof |
| CN112538210A (en) * | 2020-12-11 | 2021-03-23 | 苏州通优新材料科技有限公司 | Deformation-resistant low-eccentricity thermoplastic semiconductive shielding material and preparation method and application thereof |
| CN114213798A (en) * | 2021-12-27 | 2022-03-22 | 上海新上化高分子材料有限公司 | Polypropylene thermoplastic semi-conductive shielding material and preparation method thereof |
| WO2022129337A1 (en) * | 2020-12-18 | 2022-06-23 | Borealis Ag | Upgraded polyolefin for electrical components |
| CN115216095A (en) * | 2022-08-15 | 2022-10-21 | 中广核高新核材科技（苏州）有限公司 | Strippable thermoplastic shielding material for PP (polypropylene) insulated medium-high voltage power cable and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110330727A (en) * | 2019-07-29 | 2019-10-15 | 上海至正道化高分子材料股份有限公司 | A kind of mesohigh is with thermoplastic insulation material and preparation method thereof |
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| CN111763374A (en) * | 2020-06-17 | 2020-10-13 | 江阴市海江高分子材料有限公司 | Semiconductive shielding material for polypropylene non-crosslinked cable and preparation method thereof |
| CN112280231A (en) * | 2020-10-14 | 2021-01-29 | 南方电网科学研究院有限责任公司 | Shielding material for polypropylene-based thermoplastic cable and preparation method thereof |
| CN112538210A (en) * | 2020-12-11 | 2021-03-23 | 苏州通优新材料科技有限公司 | Deformation-resistant low-eccentricity thermoplastic semiconductive shielding material and preparation method and application thereof |
| WO2022129337A1 (en) * | 2020-12-18 | 2022-06-23 | Borealis Ag | Upgraded polyolefin for electrical components |
| CN114213798A (en) * | 2021-12-27 | 2022-03-22 | 上海新上化高分子材料有限公司 | Polypropylene thermoplastic semi-conductive shielding material and preparation method thereof |
| CN115216095A (en) * | 2022-08-15 | 2022-10-21 | 中广核高新核材科技（苏州）有限公司 | Strippable thermoplastic shielding material for PP (polypropylene) insulated medium-high voltage power cable and preparation method thereof |
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Effective date of registration: 20210430 Address after: 201109 Building 5, 268 beihengshahe Road, Minhang District, Shanghai Applicant after: Shanghai Zhizheng New Material Co., Ltd Address before: 5050 Yuanjiang Road, Xinzhuang Industrial Zone, Minhang District, Shanghai 201108 Applicant before: SHANGHAI ORIGINALDOW ADVANCED COMPOUNDS Co.,Ltd. |
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Application publication date: 20190514 |