CN110423453A - A kind of high-intensity anti-cracking cable sheath material and preparation method thereof - Google Patents
A kind of high-intensity anti-cracking cable sheath material and preparation method thereof Download PDFInfo
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- CN110423453A CN110423453A CN201910553361.1A CN201910553361A CN110423453A CN 110423453 A CN110423453 A CN 110423453A CN 201910553361 A CN201910553361 A CN 201910553361A CN 110423453 A CN110423453 A CN 110423453A
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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
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/302—Polyurethanes or polythiourethanes; Polyurea or polythiourea
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
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- C08K2003/265—Calcium, strontium or barium carbonate
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- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
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- C08L2205/00—Polymer mixtures characterised by other features
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Abstract
The present invention provides a kind of high-intensity anti-cracking cable sheath material and preparation method thereof, is related to cable cover(ing) production technical field.The cable sheath material is made of raw material from the following weight: 45-55 parts of polyurethane rubber, 10-15 parts of neoprene, 5-10 parts of talcum powder, diatomite 5-10 points, 0.4-0.6 parts of crosslinking agent, 6-8 parts of calcium carbonate, 3-5 parts of aluminium oxide, 5-7 parts of sulphur, 4-6 parts of phthalic acid hydroxyl ethyl ester, 6-8 parts of methacrylic resin, 3-5 parts of fumed silica, 5-7 parts of isocyanates, 2-4 parts of aramid fiber, 2-4 parts of poly P phenylene terephthalamic fibre, 3-5 parts of dispersing agent, 2-4 parts of vulcanizing agent.The present invention overcomes the deficiencies in the prior art, can effectively improve the intensity and cracking resistance of sheath material, prevent cable cover(ing) from cracking under ambient pressure, and then the normal use of cable is influenced, cable is highly-safe, and sheath material overall performance is excellent, long service life is suitable for promoting.
Description
Technical field
The present invention relates to cable cover(ing) production technical fields, and in particular to a kind of high-intensity anti-cracking cable sheath material and its
Preparation method.
Background technique
Cable is usually every group by several or the cable of similar rope that several groups of conducting wires (every group at least two) are twisted
Mutually insulated between conducting wire, and be often twisted into around a center, entire outside is surrounded by the coating of high-insulation, for connecting
Circuit, electric appliance etc..Cable has interior energization, the feature of external insulation.The coating wrapped up outside cable conductor is cable cover(ing),
For protecting inner lead, while preventing user from Danger Electric shock risk occurs.
The formula composition and production technology of cable sheath material are unreasonable at present, lead to the intensity of cable sheath material and resist
Fragility can be poor, in this way in the use process of cable cover(ing), easily cracks under ambient pressure, and then influences cable
Normal use, while also bringing security risk.Therefore, a kind of high-intensity anti-cracking cable sheath material is researchers' research
Hot spot.
Summary of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of high-intensity anti-cracking cable sheath material and preparation method thereof, this
Invention overcomes the deficiencies in the prior art, can effectively improve the intensity and cracking resistance of sheath material, prevent cable cover(ing) from existing
It cracking under ambient pressure, and then influences the normal use of cable, cable is highly-safe, and sheath material overall performance is excellent,
Long service life is suitable for promoting.
In order to achieve the above object, technical solution of the present invention is achieved by the following technical programs:
A kind of high-intensity anti-cracking cable sheath material, the cable sheath material are made of raw material from the following weight: poly-
45-55 parts of urethane rubber, 10-15 parts of neoprene, 5-10 parts of talcum powder, diatomite 5-10 points, 0.4-0.6 parts of crosslinking agent, carbon
Sour calcium 6-8 parts, 3-5 parts of aluminium oxide, 5-7 parts of sulphur, 4-6 parts of phthalic acid hydroxyl ethyl ester, 6-8 parts of methacrylic resin, gas
3-5 parts of aerosil, 2-4 parts of aramid fiber, 2-4 parts of poly P phenylene terephthalamic fibre, divides 5-7 parts of isocyanates
3-5 parts of powder, 2-4 parts of vulcanizing agent.
Preferably, the cable sheath material is made of raw material from the following weight: 50 parts of polyurethane rubber, neoprene
12.5 parts, 7.5 parts of talcum powder, diatomite 7.5 divide, 0.5 part of crosslinking agent, 7 parts of calcium carbonate, 4 parts of aluminium oxide, 6 parts of sulphur, adjacent benzene two
5 parts of formic acid hydroxyl ethyl ester, 7 parts of methacrylic resin, 4 parts of fumed silica, 6 parts of isocyanates, 3 parts of aramid fiber, poly- pair
3 parts of penylene terephthalamide fiber, 4 parts of dispersing agent, 3 parts of vulcanizing agent.
Preferably, the crosslinking agent is by N, N- methylene-bisacrylamide, 1,4-butanediol diglycidyl ether and diethyl
Hydramine is mixed with mass ratio for 3:2:1.
Preferably, the dispersing agent is one of sodium tripolyphosphate, stearmide, sodium octyl and hydroxyl magnesium silicate
Or it is a variety of.
Preferably, the vulcanizing agent is N, N '-penylene bismaleimide, methyl ethyl ketone peroxide, 2- sulfydryl benzo thiophene
One of azoles and aminodithioformic acid bismuth are a variety of.
The preparation method of the cable sheath material the following steps are included:
(1) polyurethane rubber and neoprene are mixed and is added in rubber mixing machine, be warming up to 200-220 DEG C, heat preservation is kneaded 2-
It is spare that 3h obtains base-material；
(2) sulfuric acid solution of 4-6 times of volume is added after mixing talcum powder, diatomite and crosslinking agent, after mixing evenly will
Its mixture pours into water-bath, and water bath with thermostatic control heating is carried out under the conditions of 50-60 DEG C, and keeping the temperature will after being modified 30-40min
Its mixture pours into centrifuge, and high speed centrifugation takes filter residue and dry modified material is spare；
(3) calcium carbonate, aluminium oxide and sulphur are added in ball mill and carry out mixed grinding, it is rear that modifier obtained is added
Material, is mixed object after mixing evenly and is placed in high temperature furnace, is warming up to 350-400 DEG C, it is spare that heat preservation roasting 1-2h obtains mixture；
(4) phthalic acid hydroxyl ethyl ester, methacrylic resin, fumed silica and isocyanates are mixed and height is added
It presses in kettle, is warming up to 180-200 DEG C, heat preservation is passed through argon gas after being kneaded 40-60min and boosts to 10-12MPa, and 30- is permeated in pressure maintaining
Restore after 40min to normal pressure, then keeps the temperature and stand 1-2h to obtain auxiliary material spare；
(5) mixture obtained and auxiliary material are added in the rubber mixing machine in above-mentioned steps (1), add aramid fiber, gathers
To penylene terephthalamide fiber, dispersing agent and vulcanizing agent, object is mixed after heat preservation mixing 3-4h and squeezes into twin-screw extrusion
In machine, extruding pelletization obtains product.
Preferably, to 160-180r/min, the middle adjustment of step (2) is centrifuged the revolving speed of adjustment rubber mixing machine in the step (1)
The revolving speed of machine is to 800-1000r/min, and the revolving speed of adjustment autoclave is to 120-150r/min in step (4).
Preferably, the concentration of sulfuric acid solution is 0.3-1.5mol/L in the step (2), and mixed grinding is extremely in step (3)
Granularity is 0.01-0.03mm.
The present invention provides a kind of high-intensity anti-cracking cable sheath material and preparation method thereof, and advantage exists compared with prior art
In:
(1) present invention is added with talcum powder, diatomite, calcium carbonate, aluminium oxide and sulphur, first passes through to talcum powder and diatom
Soil mixture carry out crosslinking and it is acidified modified, modification by calcination is mixed and carried out with other components afterwards, sheath can be effectively improved
The intensity and cracking resistance of material, prevent cable cover(ing) from cracking under ambient pressure, and then influence the normal use of cable,
Cable cover(ing) is highly-safe, long service life；
(2) present invention is also added with phthalic acid hydroxyl ethyl ester, methacrylic resin, fumed silica and isocyanic acid
Ester can cooperate with modified material by carrying out infiltration fusion under high-temperature and high-pressure conditions, further increase sheath material
Intensity and cracking resistance, sheath material using effect it is good；
(3) present invention is also added with aramid fiber and poly P phenylene terephthalamic fibre, it can be made uniformly to divide
It is dispersed in sheath material and forms reticular structure, to effectively improve its cracking resistance, sheath material overall performance is excellent, is suitable for
It promotes.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below with reference to the embodiment of the present invention pair
Technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is a part of the invention
Embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making wound
Every other embodiment obtained under the premise of the property made labour, shall fall within the protection scope of the present invention.
Embodiment 1:
A kind of high-intensity anti-cracking cable sheath material, the cable sheath material are made of raw material from the following weight: poly-
45 parts of urethane rubber, 10 parts of neoprene, 5 parts of talcum powder, diatomite 5 divides, 0.4 part of crosslinking agent, 6 parts of calcium carbonate, aluminium oxide 3
Part, 5 parts of sulphur, 4 parts of phthalic acid hydroxyl ethyl ester, 6 parts of methacrylic resin, 3 parts of fumed silica, 5 parts of isocyanates,
2 parts of aramid fiber, 2 parts of poly P phenylene terephthalamic fibre, 3 parts of dispersing agent, 2 parts of vulcanizing agent.
Wherein, the crosslinking agent is by N, N- methylene-bisacrylamide, 1,4-butanediol diglycidyl ether and diethanol
Amine is mixed with mass ratio for 3:2:1；The dispersing agent is sodium tripolyphosphate；The vulcanizing agent is N, N '-penylene span
Carry out acid imide.
The preparation method of the cable sheath material the following steps are included:
(1) polyurethane rubber and neoprene are mixed and is added in rubber mixing machine, be warming up to 200-220 DEG C, heat preservation is kneaded 2-
It is spare that 3h obtains base-material；
(2) sulfuric acid solution of 4-6 times of volume is added after mixing talcum powder, diatomite and crosslinking agent, after mixing evenly will
Its mixture pours into water-bath, and water bath with thermostatic control heating is carried out under the conditions of 50-60 DEG C, and keeping the temperature will after being modified 30-40min
Its mixture pours into centrifuge, and high speed centrifugation takes filter residue and dry modified material is spare；
(3) calcium carbonate, aluminium oxide and sulphur are added in ball mill and carry out mixed grinding, it is rear that modifier obtained is added
Material, is mixed object after mixing evenly and is placed in high temperature furnace, is warming up to 350-400 DEG C, it is spare that heat preservation roasting 1-2h obtains mixture；
(4) phthalic acid hydroxyl ethyl ester, methacrylic resin, fumed silica and isocyanates are mixed and height is added
It presses in kettle, is warming up to 180-200 DEG C, heat preservation is passed through argon gas after being kneaded 40-60min and boosts to 10-12MPa, and 30- is permeated in pressure maintaining
Restore after 40min to normal pressure, then keeps the temperature and stand 1-2h to obtain auxiliary material spare；
(5) mixture obtained and auxiliary material are added in the rubber mixing machine in above-mentioned steps (1), add aramid fiber, gathers
To penylene terephthalamide fiber, dispersing agent and vulcanizing agent, object is mixed after heat preservation mixing 3-4h and squeezes into twin-screw extrusion
In machine, extruding pelletization obtains product.
Wherein, for the revolving speed of adjustment rubber mixing machine to 160-180r/min, step (2) is middle to adjust centrifuge in the step (1)
Revolving speed to 800-1000r/min, the revolving speed of adjustment autoclave is to 120-150r/min in step (4)；Sulphur in the step (2)
The concentration of acid solution is 0.3-1.5mol/L, and mixed grinding to granularity is 0.01-0.03mm in step (3).
Embodiment 2:
A kind of high-intensity anti-cracking cable sheath material, the cable sheath material are made of raw material from the following weight: poly-
50 parts of urethane rubber, 12.5 parts of neoprene, 7.5 parts of talcum powder, diatomite 7.5 divides, 0.5 part of crosslinking agent, 7 parts of calcium carbonate, oxygen
Change 4 parts of aluminium, 6 parts of sulphur, 5 parts of phthalic acid hydroxyl ethyl ester, 7 parts of methacrylic resin, 4 parts of fumed silica, isocyanic acid
6 parts of ester, 3 parts of aramid fiber, 3 parts of poly P phenylene terephthalamic fibre, 4 parts of dispersing agent, 3 parts of vulcanizing agent.
Wherein, the crosslinking agent is by N, N- methylene-bisacrylamide, 1,4-butanediol diglycidyl ether and diethanol
Amine is mixed with mass ratio for 3:2:1；The dispersing agent is stearmide；The vulcanizing agent is methyl ethyl ketone peroxide.
The preparation method of the cable sheath material the following steps are included:
(1) polyurethane rubber and neoprene are mixed and is added in rubber mixing machine, be warming up to 200-220 DEG C, heat preservation is kneaded 2-
It is spare that 3h obtains base-material；
(2) sulfuric acid solution of 4-6 times of volume is added after mixing talcum powder, diatomite and crosslinking agent, after mixing evenly will
Its mixture pours into water-bath, and water bath with thermostatic control heating is carried out under the conditions of 50-60 DEG C, and keeping the temperature will after being modified 30-40min
Its mixture pours into centrifuge, and high speed centrifugation takes filter residue and dry modified material is spare；
(3) calcium carbonate, aluminium oxide and sulphur are added in ball mill and carry out mixed grinding, it is rear that modifier obtained is added
Material, is mixed object after mixing evenly and is placed in high temperature furnace, is warming up to 350-400 DEG C, it is spare that heat preservation roasting 1-2h obtains mixture；
(4) phthalic acid hydroxyl ethyl ester, methacrylic resin, fumed silica and isocyanates are mixed and height is added
It presses in kettle, is warming up to 180-200 DEG C, heat preservation is passed through argon gas after being kneaded 40-60min and boosts to 10-12MPa, and 30- is permeated in pressure maintaining
Restore after 40min to normal pressure, then keeps the temperature and stand 1-2h to obtain auxiliary material spare；
(5) mixture obtained and auxiliary material are added in the rubber mixing machine in above-mentioned steps (1), add aramid fiber, gathers
To penylene terephthalamide fiber, dispersing agent and vulcanizing agent, object is mixed after heat preservation mixing 3-4h and squeezes into twin-screw extrusion
In machine, extruding pelletization obtains product.
Wherein, for the revolving speed of adjustment rubber mixing machine to 160-180r/min, step (2) is middle to adjust centrifuge in the step (1)
Revolving speed to 800-1000r/min, the revolving speed of adjustment autoclave is to 120-150r/min in step (4)；Sulphur in the step (2)
The concentration of acid solution is 0.3-1.5mol/L, and mixed grinding to granularity is 0.01-0.03mm in step (3).
Embodiment 3:
A kind of high-intensity anti-cracking cable sheath material, the cable sheath material are made of raw material from the following weight: poly-
55 parts of urethane rubber, 15 parts of neoprene, 10 parts of talcum powder, diatomite 10 divides, 0.6 part of crosslinking agent, 8 parts of calcium carbonate, aluminium oxide 5
Part, 7 parts of sulphur, 6 parts of phthalic acid hydroxyl ethyl ester, 8 parts of methacrylic resin, 5 parts of fumed silica, 7 parts of isocyanates,
4 parts of aramid fiber, 4 parts of poly P phenylene terephthalamic fibre, 5 parts of dispersing agent, 4 parts of vulcanizing agent.
Wherein, the crosslinking agent is by N, N- methylene-bisacrylamide, 1,4-butanediol diglycidyl ether and diethanol
Amine is mixed with mass ratio for 3:2:1；The dispersing agent is hydroxyl magnesium silicate；The vulcanizing agent is aminodithioformic acid
Bismuth.
The preparation method of the cable sheath material the following steps are included:
(1) polyurethane rubber and neoprene are mixed and is added in rubber mixing machine, be warming up to 200-220 DEG C, heat preservation is kneaded 2-
It is spare that 3h obtains base-material；
(2) sulfuric acid solution of 4-6 times of volume is added after mixing talcum powder, diatomite and crosslinking agent, after mixing evenly will
Its mixture pours into water-bath, and water bath with thermostatic control heating is carried out under the conditions of 50-60 DEG C, and keeping the temperature will after being modified 30-40min
Its mixture pours into centrifuge, and high speed centrifugation takes filter residue and dry modified material is spare；
(3) calcium carbonate, aluminium oxide and sulphur are added in ball mill and carry out mixed grinding, it is rear that modifier obtained is added
Material, is mixed object after mixing evenly and is placed in high temperature furnace, is warming up to 350-400 DEG C, it is spare that heat preservation roasting 1-2h obtains mixture；
(4) phthalic acid hydroxyl ethyl ester, methacrylic resin, fumed silica and isocyanates are mixed and height is added
It presses in kettle, is warming up to 180-200 DEG C, heat preservation is passed through argon gas after being kneaded 40-60min and boosts to 10-12MPa, and 30- is permeated in pressure maintaining
Restore after 40min to normal pressure, then keeps the temperature and stand 1-2h to obtain auxiliary material spare；
(5) mixture obtained and auxiliary material are added in the rubber mixing machine in above-mentioned steps (1), add aramid fiber, gathers
To penylene terephthalamide fiber, dispersing agent and vulcanizing agent, object is mixed after heat preservation mixing 3-4h and squeezes into twin-screw extrusion
In machine, extruding pelletization obtains product.
Wherein, for the revolving speed of adjustment rubber mixing machine to 160-180r/min, step (2) is middle to adjust centrifuge in the step (1)
Revolving speed to 800-1000r/min, the revolving speed of adjustment autoclave is to 120-150r/min in step (4)；Sulphur in the step (2)
The concentration of acid solution is 0.3-1.5mol/L, and mixed grinding to granularity is 0.01-0.03mm in step (3).
Embodiment 4:
Detect the toughness and resistance to pressure of cable sheath material in common on the market cable sheath material and embodiment 1-3
Can, specific detection method are as follows: set control group for cable sheath material common on the market, will be made in embodiment 1-3
Cable sheath material be set as experimental group 1-3, the cable sheath material extrusion molding in control group and experimental group 1-3 is made
Sheath batten is measured by GB/T528-2009 " measurement of vulcanized rubber or thermoplastic elastomer tensile stress-strain performance " method and is protected
Cover the tensile strength (MPa) and elongation at break (%) of batten.
Its testing result is as shown in the table:
As seen from the above table, real since its tensile strength of the sheath batten of experimental group 2 and elongation at break are highest
It applies its intensity of sheath material obtained by example 2 and cracking resistance is best.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (8)
1. a kind of high-intensity anti-cracking cable sheath material, which is characterized in that the cable sheath material by following parts by weight original
Material is made: 45-55 parts of polyurethane rubber, 10-15 parts of neoprene, 5-10 parts of talcum powder, diatomite 5-10 points, crosslinking agent 0.4-
0.6 part, 6-8 parts of calcium carbonate, 3-5 parts of aluminium oxide, 5-7 parts of sulphur, 4-6 parts of phthalic acid hydroxyl ethyl ester, methacrylic resin
6-8 parts, 3-5 parts of fumed silica, 5-7 parts of isocyanates, 2-4 parts of aramid fiber, poly P phenylene terephthalamic fibre
2-4 parts, 3-5 parts of dispersing agent, 2-4 parts of vulcanizing agent.
2. a kind of high-intensity anti-cracking cable sheath material according to claim 1, which is characterized in that the cable cover(ing) material
Material is made of raw material from the following weight: 50 parts of polyurethane rubber, 12.5 parts of neoprene, 7.5 parts of talcum powder, diatomite 7.5
Divide, 0.5 part of crosslinking agent, 7 parts of calcium carbonate, 4 parts of aluminium oxide, 6 parts of sulphur, 5 parts of phthalic acid hydroxyl ethyl ester, methacrylic resin
7 parts, 4 parts of fumed silica, 6 parts of isocyanates, 3 parts of aramid fiber, 3 parts of poly P phenylene terephthalamic fibre, dispersion
4 parts of agent, 3 parts of vulcanizing agent.
3. a kind of high-intensity anti-cracking cable sheath material according to claim 1, which is characterized in that the crosslinking agent by N,
N- methylene-bisacrylamide, 1,4- butanediol diglycidyl ether and diethanol amine are mixed with mass ratio for 3:2:1.
4. a kind of high-intensity anti-cracking cable sheath material according to claim 1, which is characterized in that the dispersing agent is three
One of polyphosphate sodium, stearmide, sodium octyl and hydroxyl magnesium silicate are a variety of.
5. a kind of high-intensity anti-cracking cable sheath material according to claim 1, which is characterized in that the vulcanizing agent is N,
One of N '-penylene bismaleimide, methyl ethyl ketone peroxide, 2-mercaptobenzothiazole and aminodithioformic acid bismuth or
It is a variety of.
6. a kind of preparation method of high-intensity anti-cracking cable sheath material, which is characterized in that the preparation of the cable sheath material
Method the following steps are included:
(1) polyurethane rubber and neoprene are mixed and is added in rubber mixing machine, be warming up to 200-220 DEG C, heat preservation is kneaded 2-3h and obtains
Base-material is spare；
(2) sulfuric acid solution of 4-6 times of volume is added after mixing talcum powder, diatomite and crosslinking agent, is mixed after mixing evenly
It closes object to pour into water-bath, and carries out water bath with thermostatic control heating under the conditions of 50-60 DEG C, mixed after keeping the temperature modified 30-40min
It closes object to pour into centrifuge, high speed centrifugation takes filter residue and dry modified material is spare；
(3) calcium carbonate, aluminium oxide and sulphur are added in ball mill and carry out mixed grinding, it is rear that modified material obtained is added, it stirs
Object is mixed after mixing uniformly to be placed in high temperature furnace, is warming up to 350-400 DEG C, it is spare that heat preservation roasting 1-2h obtains mixture；
(4) phthalic acid hydroxyl ethyl ester, methacrylic resin, fumed silica and isocyanates are mixed and autoclave is added
It is interior, it is warming up to 180-200 DEG C, heat preservation is passed through argon gas after being kneaded 40-60min and boosts to 10-12MPa, and 30- is permeated in pressure maintaining
Restore after 40min to normal pressure, then keeps the temperature and stand 1-2h to obtain auxiliary material spare；
(5) mixture obtained and auxiliary material are added in the rubber mixing machine in above-mentioned steps (1), add aramid fiber, is poly- to benzene
Terephthalamide fiber, dispersing agent and vulcanizing agent are supportted, object is mixed after heat preservation mixing 3-4h and squeezes into double screw extruder,
Extruding pelletization obtains product.
7. a kind of preparation method of high-intensity anti-cracking cable sheath material according to claim 6, which is characterized in that described
The revolving speed of adjustment rubber mixing machine is to 160-180r/min in step (1), and the revolving speed of adjustment centrifuge is to 800-1000r/ in step (2)
Min, the middle revolving speed for adjusting autoclave of step (4) to 120-150r/min.
8. a kind of preparation method of high-intensity anti-cracking cable sheath material according to claim 6, which is characterized in that described
The concentration of sulfuric acid solution is 0.3-1.5mol/L in step (2), and mixed grinding to granularity is 0.01-0.03mm in step (3).
Priority Applications (1)
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| CN112552670A (en) * | 2020-12-24 | 2021-03-26 | 中辰电缆股份有限公司 | High-performance anti-cracking cable sheath and preparation method thereof |
| CN113270229A (en) * | 2021-05-25 | 2021-08-17 | 国网河南省电力公司西峡县供电公司 | Photoelectric composite cable with high stable transmission performance |
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