CN105462079A - Semi-conductive material for saddle-shaped filling strip with high hardness and high temperature resistance and preparation method of semi-conductive material - Google Patents
Semi-conductive material for saddle-shaped filling strip with high hardness and high temperature resistance and preparation method of semi-conductive material Download PDFInfo
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- CN105462079A CN105462079A CN201510862170.5A CN201510862170A CN105462079A CN 105462079 A CN105462079 A CN 105462079A CN 201510862170 A CN201510862170 A CN 201510862170A CN 105462079 A CN105462079 A CN 105462079A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
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Abstract
The invention discloses a semi-conductive material for a saddle-shaped filling strip with high hardness and high temperature resistance and a preparation method of the semi-conductive material. The semi-conductive material comprises components as follows: EPDM (ethylene propylene diene monomer) rubber, low-density polyethylene, a flowing dispersing auxiliary, an anti-aging agent RD, microcrystalline wax, zinc oxide, TAIC (triallyl isocyanurate), DCP (dicumyl peroxide), conductive carbon black, graphite powder, paraffin oil and 52# chlorinated paraffin oil. The special material for the saddle-shaped rubber jacketed flexible cable filling strip is provided, a main cable core and an auxiliary cable core can be supported by the high-strength and high-hardness filling strip prepared from the material, and the cable cores are not deformed under the action of extrusion force in cabling and outer sheathing procedures. Besides, certain anti-tensile function can be realized by the aid of excessive strength, tensile fracture of the cable cores is reduced in the cable tensioning process, and the service life of the cable is prolonged. Therefore, with the adoption of the filling strip material, the section appearance of the cable can be improved, the filling is compacter, and anti-impact and anti-extrusion performance of the cable is enhanced.
Description
Technical field
The present invention relates to cable industry, be specifically related to a kind of high-hardness high temperature resistant shape of a saddle packing semiconductive material and preparation method thereof, shape comprises the shape of a saddle, circle and other abnormity such as fan-shaped.
Background technology
The production of rubber sleeve flexible cable is in the existing history for many years of China, and the cable of domestic and international many cable producers all strong, superior performance of this movability of production and operation, occupies very important position in cable kind.
Rubber sleeve flexible cable generally can take core gap-fill, and the object of filling is: (1) keeps stranding rounding, thus makes the outside diameter of cable rounding after extruding sheath and smooth surface; (2) stranding core structure is made to stablize; (3) center bedding core (many insulated wire cores twisted synthesizing cables) also plays mechanical damping effect, strengthens shock resistance and the extrusion performance of cable; (4) semiconductive packing makes the screen layer of three master cores be connected between two, and conducting mutual with ground wire, guarantee that cable has good earthing effect and shield effectiveness.
On domestic market, center filling position utilizes conventional circular packing, in stranding and oversheath operation, core can be squeezed the effect of power, core can be caused to be out of shape, on the one hand, cross-section of cable appearance poor, on the other hand, the thickness of insulating layer be extruded can be thinning, and insulation thickness and the electrical property of sending a telegraph cable are not up to standard.And adopt the shape of a saddle packing of high strength and high hardness can solve the problem completely.
The packing that current domestic most producer uses mostly is the scrap rubber producing gained, assorted glue, not only poor mechanical property, hardness is low, and does not possess conductivity, screen layer between three master cores is not communicated with mutually, causes earthing effect and shield effectiveness to be had a greatly reduced quality.The author dissects external wireline test and obtains, intensity >=the 16MPa of shape of a saddle packing, hardness >=90 degree, transition resistance≤3000 ohm, design difference is remarkable as can be seen here, can infer that the quality of this stopping composition performance has a great impact cable tool in work-ing life.
Summary of the invention
Goal of the invention: the invention provides a kind of high-hardness high temperature resistant shape of a saddle packing semiconductive material and preparation method thereof, object is exactly for the uneven present situation of domestic packing material and function, study with reference to external packing performance, intensity >=16MPa is prepared in exploitation, hardness >=90 degree, the high-end packing material of transition resistance≤3000 ohm.
Technical scheme: a kind of high-hardness high temperature resistant shape of a saddle packing semiconductive material, described high-hardness high temperature resistant shape of a saddle packing semiconductive material is made up of according to parts by weight following component:
Terpolymer EP rubber 60 ~ 80 parts;
Low Density Polyethylene 20 ~ 40 parts;
Flow dispersion auxiliary agent 1 ~ 2 part;
Anti-aging agent RD 0.5 ~ 1.5 part;
Microcrystalline Wax 5 ~ 8 parts;
4 ~ 6 parts, zinc oxide;
TAIC2 ~ 5 part;
DCP2 ~ 4 part;
Graphitized carbon black 50 ~ 70 parts;
Graphite Powder 99 10 ~ 30 parts;
Paraffin oil 10 ~ 15 parts;
52# chlorinated paraffinic oil 10 ~ 15 parts.
A preparation method for high-hardness high temperature resistant shape of a saddle packing semiconductive material described in basis, comprises the steps:
Step (1), raw-material preparation: select terpolymer EP rubber 60 ~ 80 parts, Low Density Polyethylene 20 ~ 40 parts, flow dispersion auxiliary agent 1 ~ 2 part, anti-aging agent RD 0.5 ~ 1.5 part, Microcrystalline Wax 5 ~ 8 parts, 4 ~ 6 parts, zinc oxide, graphitized carbon black 50 ~ 70 parts, Graphite Powder 99 10 ~ 30 parts, paraffin oil 10 ~ 15 parts, 52# chlorinated paraffinic oil 10 ~ 15 parts;
Step (2), one section mixing: above-mentioned materials is dropped into mixing 5 ~ 7min in Banbury mixer, mentions floating weight and carry out sweeping through the material, repeat twice, then continue mixing until after Temperature displaying 100 DEG C, rubber unvulcanizate is disposed to mill turn over bag mixing, then do not open bar slice;
Step (3), two-stage mixing: step (2) cooled product is dropped into Banbury mixer again and carries out mixing, wherein, add DCP2 ~ 4 part and TAIC2 ~ 5 part, mixing time 1min, grinds page machines carry out out bar slice after binder removal at three rollers;
Step (4) connects sulphur and extrudes operation: the finished product in step (3) is placed the company of input sulphur workshop use afterwards in 16 hours, connecting in sulphur extrusion, extruder temperature is set as 65 ~ 90 DEG C, and sulfuration steam pressure 1.4MPa, pulling speed 16m/min obtains finished product.
As further optimization: the resistance of described finished product shape of a saddle packing is 900-1800 Ω.
As further optimization: the intensity 15.8-16.7MPa of described finished product shape of a saddle packing.
As further optimization: the hardness 89-92 degree of described finished product shape of a saddle packing.
Beneficial effect: the rubber sleeve flexible cable packing material that the invention provides a kind of special horse-saddle, the high strength and high hardness packing using this material to prepare can support master core and auxiliary core, and the effect standing squeeze at stranding and oversheath operation core is indeformable.In addition, the intensity exceeded can play certain stretch-proof effect, reduces the stretching action to cable core in cable tensile strain process, increases the service life.Therefore, the use of this packing material, not only improves cross-section of cable outward appearance, and fills consolidation more, enhances shock resistance and the extrusion performance of cable.
Embodiment
Below in conjunction with specific embodiment, the present invention will be described in detail.
Specific embodiment 1
Select terpolymer EP rubber 60 parts, Low Density Polyethylene 40 parts, flow dispersion auxiliary agent 2 parts, anti-aging agent RD 0.5 part, Microcrystalline Wax 8 parts, 6 parts, zinc oxide, graphitized carbon black 70 parts, Graphite Powder 99 10 parts, paraffin oil 10 parts, 52# chlorinated paraffinic oil 15 parts.Above-mentioned materials is dropped into mixing 5 ~ 7min in Banbury mixer, mention floating weight and carry out sweeping through the material, repeat twice, then continue mixing until Temperature displaying 100 DEG C rubber unvulcanizate to be disposed to mill to turn over bag mixing, then bar slice is not opened, again drop into Banbury mixer after cooling and add DCP4 part and TAIC5 part, mixing time 1min, grind page machine at three rollers and carry out out bar slice, finished product places the company of input sulphur workshop use afterwards in 16 hours, and connecting in sulphur extrusion, extruder temperature is set as 65 ~ 90 DEG C, sulfuration steam pressure 1.4MPa, pulling speed 16m/min obtains finished product.Finished product shape of a saddle packing resistance 1800 Ω, intensity 16.7MPa, hardness 92 degree is suitable with imported product.
Specific embodiment 2
Select terpolymer EP rubber 70 parts, Low Density Polyethylene 30 parts, flow dispersion auxiliary agent 1.5 parts, anti-aging agent RD 1 part, Microcrystalline Wax 6 parts, 5 parts, zinc oxide, graphitized carbon black 60 parts, Graphite Powder 99 20 parts, paraffin oil 12.5 parts, 52# chlorinated paraffinic oil 12.5 parts.Above-mentioned materials is dropped into mixing 5 ~ 7min in Banbury mixer, mention floating weight and carry out sweeping through the material, repeat twice, then continue mixing until Temperature displaying 100 DEG C rubber unvulcanizate to be disposed to mill to turn over bag mixing, then bar slice is not opened, again drop into Banbury mixer after cooling and add DCP3 part and TAIC3.5 part, mixing time 1min, grind page machine at three rollers and carry out out bar slice, finished product places the company of input sulphur workshop use afterwards in 16 hours, and connecting in sulphur extrusion, extruder temperature is set as 65 ~ 90 DEG C, sulfuration steam pressure 1.4MPa, pulling speed 14m/min obtains finished product.Finished product shape of a saddle packing resistance 1260 Ω, intensity 16.3MPa, hardness 91 degree is suitable with imported product.
Specific embodiment 3
Select terpolymer EP rubber 80 parts, Low Density Polyethylene 20 parts, flow dispersion auxiliary agent 1 part, anti-aging agent RD 1.5 parts, Microcrystalline Wax 5 parts, 4 parts, zinc oxide, graphitized carbon black 50 parts, Graphite Powder 99 30 parts, paraffin oil 15 parts, 52# chlorinated paraffinic oil 10 parts.Above-mentioned materials is dropped into mixing 5 ~ 7min in Banbury mixer, mention floating weight and carry out sweeping through the material, repeat twice, then continue mixing until Temperature displaying 100 DEG C rubber unvulcanizate to be disposed to mill to turn over bag mixing, then bar slice is not opened, again drop into Banbury mixer after cooling and add DCP2 part and TAIC2 part, mixing time 1min, grind page machine at three rollers and carry out out bar slice, finished product places the company of input sulphur workshop use afterwards in 16 hours, and connecting in sulphur extrusion, extruder temperature is set as 65 ~ 90 DEG C, sulfuration steam pressure 1.5MPa, pulling speed 12m/min obtains finished product.Finished product shape of a saddle packing resistance 900 Ω, intensity 15.8MPa, hardness 89 degree is suitable with imported product.
The present invention is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present invention; no matter but any change is done in its shape or structure; every have identical with the application or akin technical scheme, all drops within protection scope of the present invention.
Claims (5)
1. a high-hardness high temperature resistant shape of a saddle packing semiconductive material, is characterized in that: described high-hardness high temperature resistant shape of a saddle packing semiconductive material is made up of according to parts by weight following component:
Terpolymer EP rubber 60 ~ 80 parts;
Low Density Polyethylene 20 ~ 40 parts;
Flow dispersion auxiliary agent 1 ~ 2 part;
Anti-aging agent RD 0.5 ~ 1.5 part;
Microcrystalline Wax 5 ~ 8 parts;
4 ~ 6 parts, zinc oxide;
TAIC2 ~ 5 part;
DCP2 ~ 4 part;
Graphitized carbon black 50 ~ 70 parts;
Graphite Powder 99 10 ~ 30 parts;
Paraffin oil 10 ~ 15 parts;
52# chlorinated paraffinic oil 10 ~ 15 parts.
2. a preparation method for high-hardness high temperature resistant shape of a saddle packing semiconductive material according to claim 1, is characterized in that: comprise the steps:
Step (1), raw-material preparation: select terpolymer EP rubber 60 ~ 80 parts, Low Density Polyethylene 20 ~ 40 parts, flow dispersion auxiliary agent 1 ~ 2 part, anti-aging agent RD 0.5 ~ 1.5 part, Microcrystalline Wax 5 ~ 8 parts, 4 ~ 6 parts, zinc oxide, graphitized carbon black 50 ~ 70 parts, Graphite Powder 99 10 ~ 30 parts, paraffin oil 10 ~ 15 parts, 52# chlorinated paraffinic oil 10 ~ 15 parts;
Step (2), one section mixing: above-mentioned materials is dropped into mixing 5 ~ 7min in Banbury mixer, mentions floating weight and carry out sweeping through the material, repeat twice, then continue mixing until after Temperature displaying 100 DEG C, rubber unvulcanizate is disposed to mill turn over bag mixing, then do not open bar slice;
Step (3), two sections again mixing: step (2) cooled product is dropped into Banbury mixer again and carries out mixing, wherein, add DCP2 ~ 4 part and TAIC2 ~ 5 part, mixing time 1min, grind page machines at three rollers after binder removal and carry out out bar slice;
Step (4) connects sulphur and extrudes operation: the finished product in step (3) is placed the company of input sulphur workshop use afterwards in 16 hours, connecting in sulphur extrusion, extruder temperature is set as 65 ~ 90 DEG C, and sulfuration steam pressure 1.4MPa, pulling speed 16m/min obtains finished product.
3. the preparation method of high-hardness high temperature resistant shape of a saddle packing semiconductive material according to claim 2, is characterized in that: the resistance of described finished product shape of a saddle packing is 900-1800 Ω.
4. the preparation method of high-hardness high temperature resistant shape of a saddle packing semiconductive material according to claim 2, is characterized in that: the intensity 15.8-16.7MPa of described finished product shape of a saddle packing.
5. the preparation method of high-hardness high temperature resistant shape of a saddle packing semiconductive material according to claim 2, is characterized in that: the hardness 89-92 degree of described finished product shape of a saddle packing.
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| CN201510862170.5A CN105462079B (en) | 2015-12-01 | 2015-12-01 | High-hardness high temperature resistant shape of a saddle packing semiconductive material and preparation method thereof |
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| CN201510862170.5A CN105462079B (en) | 2015-12-01 | 2015-12-01 | High-hardness high temperature resistant shape of a saddle packing semiconductive material and preparation method thereof |
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| CN105462079B CN105462079B (en) | 2018-01-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110128756A (en) * | 2019-06-12 | 2019-08-16 | 胡迈超 | A kind of EPT rubber packing item compatible with silicone and preparation method thereof |
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| US3919358A (en) * | 1974-08-02 | 1975-11-11 | Goodrich Co B F | Thermoplastic polymer blends of (1) EPDM having a high degree of unstretched crystallinity with (2) polyethylene |
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| CN1546560A (en) * | 2003-12-16 | 2004-11-17 | 中国科学院长春应用化学研究所 | Polyethylene/ethylene-propylene rubber/carbon black macromolecule conductive composite material preparation |
| CN101186729A (en) * | 2007-12-14 | 2008-05-28 | 华南理工大学 | Polythene/carbon black conductive heat-sensitive composite material and preparation method thereof |
| CN101709132A (en) * | 2009-08-24 | 2010-05-19 | 陕西易莱德新材料科技有限公司 | Composite conductive polymer for flexible anode and preparation process thereof |
| CN103819820A (en) * | 2014-02-10 | 2014-05-28 | 上海蓝昊电气江苏有限公司 | Mine cable rubber sheath conductor shielding material |
-
2015
- 2015-12-01 CN CN201510862170.5A patent/CN105462079B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3919358A (en) * | 1974-08-02 | 1975-11-11 | Goodrich Co B F | Thermoplastic polymer blends of (1) EPDM having a high degree of unstretched crystallinity with (2) polyethylene |
| CN1388202A (en) * | 2002-07-09 | 2003-01-01 | 杭州华电华源环境工程有限公司 | Heat-conducting polymer material and its prepn |
| CN1546560A (en) * | 2003-12-16 | 2004-11-17 | 中国科学院长春应用化学研究所 | Polyethylene/ethylene-propylene rubber/carbon black macromolecule conductive composite material preparation |
| CN101186729A (en) * | 2007-12-14 | 2008-05-28 | 华南理工大学 | Polythene/carbon black conductive heat-sensitive composite material and preparation method thereof |
| CN101709132A (en) * | 2009-08-24 | 2010-05-19 | 陕西易莱德新材料科技有限公司 | Composite conductive polymer for flexible anode and preparation process thereof |
| CN103819820A (en) * | 2014-02-10 | 2014-05-28 | 上海蓝昊电气江苏有限公司 | Mine cable rubber sheath conductor shielding material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110128756A (en) * | 2019-06-12 | 2019-08-16 | 胡迈超 | A kind of EPT rubber packing item compatible with silicone and preparation method thereof |
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