CN108165022A - Field operation composite cable sealing sheath and preparation method thereof - Google Patents
Field operation composite cable sealing sheath and preparation method thereof Download PDFInfo
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- CN108165022A CN108165022A CN201810035011.1A CN201810035011A CN108165022A CN 108165022 A CN108165022 A CN 108165022A CN 201810035011 A CN201810035011 A CN 201810035011A CN 108165022 A CN108165022 A CN 108165022A
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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
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
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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
- H01B3/46—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 silicones
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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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
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
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Abstract
The present invention relates to cable rubber, specifically disclose a kind of field operation composite cable sealing sheath and preparation method thereof.The present invention is mixed using boron fibre with silane coupling agent, obtains pretreatment enhancers, using a mixing, secondary mixing, and with reference to flash process, and is combined extrusion molding, microwave vulcanization, has been obtained field operation composite cable sealing sheath.Using the preparation method, the glutinous roller phenomenon that substantially reduced can be kneaded during (the first mixing, the second mixing), reduce actual operating time, the risk of raw material aging can be reduced on the basis of preparation efficiency is increased, and obtained product is low temperature resistant, high intensity, the balancing performances such as anti-aging, and obtained field operation composite cable sealing sheath material has the advantages that low temperature resistant, high intensity and anti-aging.The preparation method operability of the present invention is strong, with obvious effects, has highly application value.
Description
Technical field
The present invention relates to cable rubber, and in particular, to a kind of field operation composite cable sealing sheath and preparation method thereof.
Background technology
At present, with the development of science and technology, either industry or the daily life of the mankind, towards electrified side
To development, then in industry and power domain, status is also gradually increased cable.Cable have power cable, control cable,
Compensating cable, shielded cable, high-temperature cable, computer cable, signal cable, coaxial cable, fire-resisting cable, cable for ship, aluminium
Alloy cable etc..Cable is typically by several or at least two cables of similar rope being twisted of several groups of every group of conducting wires,
Mutually insulated between every group of conducting wire, and be often twisted into around a center, entire outside is surrounded by the outer jacket of high-insulation, is used for
Connect circuit, electric appliance etc..
Field operation military training is mostly in extremely cold area, and temperature is very low (particularly winter), and ultraviolet light is strong, general tool
Sheath and insulation can crack at low temperature for line and extended line, lose to the protective effect of transmission of electricity and fail.It is and relatively cold regional ultraviolet
Light is strong, and general organic high polymer material is unable to bear ultraviolet light and aging and fails.Since tool line can use outdoors, and
And mobile, softness requirements height particularly extremely low temperature under high to the softness requirements of cable is needed often, while require to produce
Product have good weatherability.
Protective coverings of cable made of protective coverings of cable can follow the string under extremely low temperature at present, and brittleness becomes larger, warp
Incessantly repeatedly mobile or bending, so that cable is discarded and cannot used.
Chinese patent document 201710430886.7 discloses a kind of field operation low temperature resistant cable outer jacket and its preparation side
Method, and specifically disclose and include the following steps：(1) by boron fibre, ethyl orthosilicate, dimethicone, cage-type silsesquioxane,
Mixing, drying obtain M1；(2) by polypropylene, lauryl mercaptan, epoxy resin E44, rare earth nitrades, peroxidating diisopropyl
Benzene mixes, and obtains M2；(3) by fluorubber, carbon black, white carbon, triethyl aluminum, Fe-series catalyst, lanthana, trimethylolpropane
Triacrylate, zinc oxide, magnesium hydroxide, M1, M2 carry out mixing, obtain M3；(4) M3 is squeezed out.
But due in preparation process, being added to a large amount of auxiliary agent, filler, cause occur glutinous roller in preparation process
Phenomenon, and glutinous roller further results in mixing unevenness, rubber performance is uneven, and in addition preparation process is glutinous due to repeatedly to clear up
Roller causes preparation time very long, and the extension of mixing time can further result in the aging of rubber raw materials again, increase the rubber of preparation
The risk of product strength hydraulic performance decline, on the other hand, glutinous roller can cause raw material mixing uneven, cause rubber partial properties compared with
It is good, and part performance cannot be met the requirements.And if reduce the additive amount of filler, although glutinous roller phenomenon mitigates, can lead
The hydraulic performance decline of rubber is caused, does not meet the material requirements of field operation composite cable sealing sheath with anti-aging, high intensity and resistance to low
The performance requirement of temperature etc..
Therefore, how to ensure field operation with composite cable sealing sheath with the performances such as low temperature resistant, high intensity, anti-aging
On the basis of, it is skill urgently to be resolved hurrily at present to reduce the glutinous roller phenomenon in preparation process to obtain the rubber product of balancing performance
Art problem.
Invention content
The object of the present invention is to provide a kind of field operation composite cable sealing sheath and preparation method thereof, the preparation method energy
The glutinous roller phenomenon during calendering process is enough reduced, actual operating time is reduced, can be dropped on the basis of preparation efficiency is increased
The risk of low raw material aging, obtained igniter motor rubber has the advantages that low temperature resistant, high intensity, anti-aging, and performance is equal
Weighing apparatus.The preparation method operability of the present invention is strong, with obvious effects, has highly application value.
To achieve these goals, the present invention provides a kind of field operation preparation method of composite cable sealing sheath, institutes
The method of stating includes the following steps：(1) boron fibre with silane coupling agent is mixed, obtains pretreatment enhancers；(2) by polypropylene,
One solvent, methyl vinyl silicone rubber, carbon black, pretreatment enhancers, zinc oxide, Fe-series catalyst and antioxidant carry out primary close
Refining, then stands；(3) the second solvent, white carbon and vulcanizing agent are added in a mixing object after standing and carries out secondary mixing；
(4) by the solvent total amount that the first solvent and the second solvent are formed, as absolutely, secondary mixing object to be flashed, is boiled off
The solvent of 60-80%；(5) the secondary mixing object after flash distillation is subjected to stone roller page, cutting, film is made, film extrusion is molded, is fixed
Diameter, traction, cutting, microwave vulcanization；Wherein, the particle size range of white carbon is -800 mesh of 600 mesh, carbon black and methyl ethylene silicon rubber
The weight ratio of glue is 1：3-5.
The present invention also provides a kind of sealed according to the field operation that previously described preparation method is prepared with composite cable to protect
Set.
Through the above technical solutions, the present invention is mixed using boron fibre with silane coupling agent, pretreatment enhancers are obtained, then pass through
A mixing, secondary mixing are crossed, and with reference to flash process, and combine extrusion molding, sizing, traction, cutting, microwave vulcanization, obtained
Field operation composite cable sealing sheath is arrived.Using the preparation method, (the first mixing, the second mixing) mistake substantially reduced can be kneaded
Glutinous roller phenomenon in journey reduces actual operating time, and the risk of raw material aging can be reduced on the basis of preparation efficiency is increased,
And obtained product is low temperature resistant, high intensity, the balancing performances such as anti-aging, obtained field operation composite cable sealing sheath material
There is low temperature resistant, high intensity and anti-aging.The preparation method operability of the present invention is strong, with obvious effects, has very high
Application value.
Specific embodiment
The specific embodiment of the present invention is described in detail below.It is it should be understood that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
The endpoint of disclosed range and any value are not limited to the accurate range or value herein, these ranges or
Value should be understood to comprising the value close to these ranges or value.For numberical range, between the endpoint value of each range, respectively
It between the endpoint value of a range and individual point value and can be individually combined with each other between point value and obtain one or more
New numberical range, these numberical ranges should be considered as specific open herein.
The present invention provides a kind of field operation preparation methods of composite cable sealing sheath, and the method includes following steps
Suddenly：(1) boron fibre with silane coupling agent is mixed, obtains pretreatment enhancers；(2) by polypropylene, the first solvent, methyl ethylene
Silicon rubber, carbon black, pretreatment enhancers, zinc oxide, Fe-series catalyst and antioxidant carry out a mixing, then stand；(3) in
The second solvent, white carbon and vulcanizing agent are added in a mixing object after standing and carries out secondary mixing；(4) with by the first solvent and
Secondary mixing object is absolutely, is flashed, boils off the solvent of 60-80% by the solvent total amount that the second solvent is formed；(5) will
Secondary mixing object after flash distillation carry out stone roller page, cutting, film is made, film extrusion is molded, sizing, traction, cutting, microwave sulphur
Change；Wherein, the particle size range of white carbon is -800 mesh of 600 mesh, and the weight ratio of carbon black and methyl vinyl silicone rubber is 1：3-5.
Through the above technical solutions, the present invention is mixed using boron fibre with silane coupling agent, pretreatment enhancers are obtained, then pass through
A mixing, secondary mixing are crossed, and with reference to flash process, and combine extrusion molding, sizing, traction, cutting, microwave vulcanization, obtained
Field operation composite cable sealing sheath is arrived.Using the preparation method, (the first mixing, the second mixing) mistake substantially reduced can be kneaded
Glutinous roller phenomenon in journey reduces actual operating time, and the risk of raw material aging can be reduced on the basis of preparation efficiency is increased,
And obtained product is low temperature resistant, high intensity, the balancing performances such as anti-aging, obtained field operation composite cable sealing sheath material
There is low temperature resistant, high intensity and anti-aging.The preparation method operability of the present invention is strong, with obvious effects, has very high
Application value.
In a kind of more preferred embodiment of the present invention, in order to mitigate (the first mixing, the second mixing) process of mixing
In glutinous roller phenomenon, reduce actual operating time, on the basis of preparation efficiency is increased reduction raw material aging risk, and
Obtained product is low temperature resistant, high intensity, the balancing performances such as anti-aging and has the advantages that low temperature resistant, high intensity and anti-aging open country
War composite cable sealing sheath, it is preferable that in parts by weight, 30-40 parts of polypropylene, 50-80 parts of the first solvent, ethylene methacrylic
100-120 parts of base silicon rubber, 25-35 parts of carbon black, 10-20 parts of pretreatment enhancers, 5-8 parts of zinc oxide, Fe-series catalyst 2-3
Part, 5-8 parts of antioxidant, 7-12 parts of the second 50-80 parts of solvent, 18-25 parts of white carbon and vulcanizing agent.
In a kind of more preferred embodiment of the present invention, in order to mitigate (the first mixing, the second mixing) process of mixing
In glutinous roller phenomenon, reduce actual operating time, on the basis of preparation efficiency is increased reduction raw material aging risk, and
Obtained product is low temperature resistant, high intensity, the balancing performances such as anti-aging and has the advantages that low temperature resistant, high intensity and anti-aging open country
War composite cable sealing sheath, it is preferable that the weight ratio of boron fibre and silane coupling agent is 2:1-3.
In a kind of more preferred embodiment of the present invention, in order to mitigate (the first mixing, the second mixing) process of mixing
In glutinous roller phenomenon, reduce actual operating time, on the basis of preparation efficiency is increased reduction raw material aging risk, and
Obtained product is low temperature resistant, high intensity, the balancing performances such as anti-aging and has the advantages that low temperature resistant, high intensity and anti-aging open country
War composite cable sealing sheath, it is preferable that one or more in silane coupling agent KH550, KH560, KH570.
In a kind of more preferred embodiment of the present invention, in order to mitigate (the first mixing, the second mixing) process of mixing
In glutinous roller phenomenon, reduce actual operating time, on the basis of preparation efficiency is increased reduction raw material aging risk, and
Obtained product is low temperature resistant, high intensity, the balancing performances such as anti-aging and has the advantages that low temperature resistant, high intensity and anti-aging open country
War composite cable sealing sheath, it is preferable that
In a kind of more preferred embodiment of the present invention, in order to mitigate (the first mixing, the second mixing) process of mixing
In glutinous roller phenomenon, reduce actual operating time, on the basis of preparation efficiency is increased reduction raw material aging risk, and
Obtained product is low temperature resistant, high intensity, the balancing performances such as anti-aging and has the advantages that low temperature resistant, high intensity and anti-aging open country
War is with composite cable sealing sheath, it is preferable that silane coupling agent is the mixture of KH550 and KH570, wherein, KH550 and
The weight ratio of KH570 is 2:2-3.
In a kind of more preferred embodiment of the present invention, in order to mitigate (the first mixing, the second mixing) process of mixing
In glutinous roller phenomenon, reduce actual operating time, on the basis of preparation efficiency is increased reduction raw material aging risk, and
Obtained product is low temperature resistant, high intensity, the balancing performances such as anti-aging and has the advantages that low temperature resistant, high intensity and anti-aging open country
War composite cable sealing sheath, it is preferable that in step (1), mixing condition includes：In 130-180 DEG C of rotating speed be 500-
30-50min is mixed under conditions of 800rpm.
In a kind of more preferred embodiment of the present invention, in order to mitigate (the first mixing, the second mixing) process of mixing
In glutinous roller phenomenon, reduce actual operating time, on the basis of preparation efficiency is increased reduction raw material aging risk, and
Obtained product is low temperature resistant, high intensity, the balancing performances such as anti-aging and has the advantages that low temperature resistant, high intensity and anti-aging open country
War composite cable sealing sheath, it is preferable that the condition of a mixing includes：In 190-200 DEG C of rotating speed be 200-300r/min
Under conditions of mixing 15-20min.
In a kind of more preferred embodiment of the present invention, in order to mitigate (the first mixing, the second mixing) process of mixing
In glutinous roller phenomenon, reduce actual operating time, on the basis of preparation efficiency is increased reduction raw material aging risk, and
Obtained product is low temperature resistant, high intensity, the balancing performances such as anti-aging and has the advantages that low temperature resistant, high intensity and anti-aging open country
War composite cable sealing sheath, it is preferable that the condition of standing includes：30-40min is stood in 120-140 DEG C.
In a kind of more preferred embodiment of the present invention, in order to mitigate (the first mixing, the second mixing) process of mixing
In glutinous roller phenomenon, reduce actual operating time, on the basis of preparation efficiency is increased reduction raw material aging risk, and
Obtained product is low temperature resistant, high intensity, the balancing performances such as anti-aging and has the advantages that low temperature resistant, high intensity and anti-aging open country
War composite cable sealing sheath, it is preferable that the condition of secondary mixing includes：In 170-180 DEG C of rotating speed be 400-500r/min
Under conditions of mixing 8-10min.
In a kind of more preferred embodiment of the present invention, in order to mitigate (the first mixing, the second mixing) process of mixing
In glutinous roller phenomenon, reduce actual operating time, on the basis of preparation efficiency is increased reduction raw material aging risk, and
Obtained product is low temperature resistant, high intensity, the balancing performances such as anti-aging and has the advantages that low temperature resistant, high intensity and anti-aging open country
War composite cable sealing sheath, it is preferable that extrusion condition includes：Extrusion temperature is 190-195 DEG C, the steam in extrusion
Pressure is controlled in 0.6-0.8MPa.
In a kind of more preferred embodiment of the present invention, in order to mitigate (the first mixing, the second mixing) process of mixing
In glutinous roller phenomenon, reduce actual operating time, on the basis of preparation efficiency is increased reduction raw material aging risk, and
Obtained product is low temperature resistant, high intensity, the balancing performances such as anti-aging and has the advantages that low temperature resistant, high intensity and anti-aging open country
War composite cable sealing sheath, it is preferable that microwave vulcanization includes successively：One section of microwave vulcanization, two sections of hot-air cures.
In a kind of more preferred embodiment of the present invention, in order to mitigate (the first mixing, the second mixing) process of mixing
In glutinous roller phenomenon, reduce actual operating time, on the basis of preparation efficiency is increased reduction raw material aging risk, and
Obtained product is low temperature resistant, high intensity, the balancing performances such as anti-aging and has the advantages that low temperature resistant, high intensity and anti-aging open country
War is with composite cable sealing sheath, it is preferable that and one section of microwave vulcanization section temperature is 190-200 DEG C, the one of two sections of hot-air cures
Duan Wendu is 180-185 DEG C, and two sections of temperature of two sections of hot-air cures are 165-175 DEG C.
In a kind of more preferred embodiment of the present invention, in order to mitigate (the first mixing, the second mixing) process of mixing
In glutinous roller phenomenon, reduce actual operating time, on the basis of preparation efficiency is increased reduction raw material aging risk, and
Obtained product is low temperature resistant, high intensity, the balancing performances such as anti-aging and has the advantages that low temperature resistant, high intensity and anti-aging open country
War composite cable sealing sheath, it is preferable that the condition of flash distillation includes：Temperature is 90-120 DEG C, pressure 0.025-
0.030MPa。
In a kind of more preferred embodiment of the present invention, in order to mitigate (the first mixing, the second mixing) process of mixing
In glutinous roller phenomenon, reduce actual operating time, on the basis of preparation efficiency is increased reduction raw material aging risk, and
Obtained product is low temperature resistant, high intensity, the balancing performances such as anti-aging and has the advantages that low temperature resistant, high intensity and anti-aging open country
War composite cable sealing sheath, it is preferable that Fe-series catalyst is the Organic Irons chemical combination such as triacetyl acetone iron and isooctyl acid iron
It is one or more in object.
In a kind of more preferred embodiment of the present invention, in order to mitigate (the first mixing, the second mixing) process of mixing
In glutinous roller phenomenon, reduce actual operating time, on the basis of preparation efficiency is increased reduction raw material aging risk, and
Obtained product is low temperature resistant, high intensity, the balancing performances such as anti-aging and has the advantages that low temperature resistant, high intensity and anti-aging open country
War is with composite cable sealing sheath, it is preferable that the first solvent be one kind in lauryl alcohol, ethyl acetate, glycerine and hexamethylene or
It is a variety of.
In a kind of more preferred embodiment of the present invention, in order to mitigate (the first mixing, the second mixing) process of mixing
In glutinous roller phenomenon, reduce actual operating time, on the basis of preparation efficiency is increased reduction raw material aging risk, and
Obtained product is low temperature resistant, high intensity, the balancing performances such as anti-aging and has the advantages that low temperature resistant, high intensity and anti-aging open country
War composite cable sealing sheath, it is preferable that the second solvent is ethyl acetate and the mixture of hexamethylene.
In a kind of more preferred embodiment of the present invention, in order to mitigate (the first mixing, the second mixing) process of mixing
In glutinous roller phenomenon, reduce actual operating time, on the basis of preparation efficiency is increased reduction raw material aging risk, and
Obtained product is low temperature resistant, high intensity, the balancing performances such as anti-aging and has the advantages that low temperature resistant, high intensity and anti-aging open country
War composite cable sealing sheath, it is preferable that the weight ratio of ethyl acetate and hexamethylene is 2 in the second solvent：1-3.
In a kind of more preferred embodiment of the present invention, in order to mitigate (the first mixing, the second mixing) process of mixing
In glutinous roller phenomenon, reduce actual operating time, on the basis of preparation efficiency is increased reduction raw material aging risk, and
Obtained product is low temperature resistant, high intensity, the balancing performances such as anti-aging and has the advantages that low temperature resistant, high intensity and anti-aging open country
War composite cable sealing sheath, it is preferable that antioxidant is irgasfos 168 and/or antioxidant 264.
In a kind of more preferred embodiment of the present invention, in order to mitigate (the first mixing, the second mixing) process of mixing
In glutinous roller phenomenon, reduce actual operating time, on the basis of preparation efficiency is increased reduction raw material aging risk, and
Obtained product is low temperature resistant, high intensity, the balancing performances such as anti-aging and has the advantages that low temperature resistant, high intensity and anti-aging open country
War composite cable sealing sheath, it is preferable that vulcanizing agent is selected as one kind in sulphur, benzoyl peroxide and urethanes
It is or a variety of.
In a kind of more preferred embodiment of the present invention, in order to mitigate (the first mixing, the second mixing) process of mixing
In glutinous roller phenomenon, reduce actual operating time, on the basis of preparation efficiency is increased reduction raw material aging risk, and
Obtained product is low temperature resistant, high intensity, the balancing performances such as anti-aging and has the advantages that low temperature resistant, high intensity and anti-aging open country
War composite cable sealing sheath, it is preferable that polyacrylic weight average molecular weight is 10000-30000.
In the above-mentioned technical solutions, conventional boron fibre, i.e. filament diameter are that 100-200 μm of boron fibre can realize this
Invention.
In the above-mentioned technical solutions, this hair can be realized in the methyl vinyl silicone rubber of conventional average molecular weight 35-70 ten thousand
It is bright, model 110-1 is selected in embodiment later, the methyl vinyl silicone rubber that average molecular weight is 50-70 ten thousand carries out
It illustrates.
The present invention also provides a kind of sealed according to the field operation that previously described preparation method is prepared with composite cable to protect
Set.
Through the above technical solutions, the present invention is mixed using boron fibre with silane coupling agent, pretreatment enhancers are obtained, then pass through
A mixing, secondary mixing are crossed, and with reference to flash process, and combine extrusion molding, sizing, traction, cutting, microwave vulcanization, obtained
Field operation composite cable sealing sheath is arrived.Using the preparation method, (the first mixing, the second mixing) mistake substantially reduced can be kneaded
Glutinous roller phenomenon in journey reduces actual operating time, and the risk of raw material aging can be reduced on the basis of preparation efficiency is increased,
And obtained product is low temperature resistant, high intensity, the balancing performances such as anti-aging, obtained field operation composite cable sealing sheath material
There is low temperature resistant, high intensity and anti-aging.The preparation method operability of the present invention is strong, with obvious effects, has very high
Application value.
The present invention will be described in detail by way of examples below.In following embodiment, mixer is turned over for strong pressurizing
Rotatable mixer is in universe Machinery Co., Ltd. purchased from Shanghai；150 μm of boron fibre filament diameter, purchased from brilliant hundred million ceramics in Zibo
Co., Ltd；Methyl vinyl silicone rubber is model 110-1；Fe-series catalyst is isooctyl acid iron；First solvent is hexamethylene；
Antioxidant is irgasfos 168；Vulcanizing agent is benzoyl peroxide；Polyacrylic weight average molecular weight is 20000；Other are conventional city
Sell product.
Preparation example 1
Boron fibre is mixed into 50min with silane coupling agent under conditions of 180 DEG C of rotating speeds are 800rpm, wherein, boron fibre
Weight ratio with silane coupling agent is 2:1, silane coupling agent is the mixture of KH550 and KH570, wherein, KH550 and KH570
Weight ratio be 2:2, obtain pretreatment enhancers.
Preparation example 2
Boron fibre is mixed into 30min with silane coupling agent under conditions of 130 DEG C of rotating speeds are 500rpm, wherein, boron fibre
Weight ratio with silane coupling agent is 2:3, silane coupling agent is the mixture of KH550 and KH570, wherein, KH550 and KH570
Weight ratio be 2:3, obtain pretreatment enhancers.
Preparation example 3
Boron fibre is mixed into 40min with silane coupling agent under conditions of 155 DEG C of rotating speeds are 650rpm, wherein, boron fibre
Weight ratio with silane coupling agent is 2:2, silane coupling agent is the mixture of KH550 and KH570, wherein, KH550 and KH570
Weight ratio be 2:2.5, obtain pretreatment enhancers.
Embodiment 1
The field operation preparation method of composite cable sealing sheath, includes the following steps：
In parts by weight, 30 parts of polypropylene, 50 parts of the first solvent, 100 parts of methyl vinyl silicone rubber, 25 parts of carbon black, system
5 parts of 10 parts of pretreatment enhancers, 5 parts of zinc oxide, 2 parts of Fe-series catalyst and antioxidant in standby example 1 are in 200 DEG C of rotating speeds
A mixing 20min is carried out under conditions of 300r/min, then stands 40min in 140 DEG C；
7 parts of 50 parts of the second solvent, 18 parts of white carbon and vulcanizing agent is added in a mixing object after standing in 170 DEG C to turn
Speed is carries out secondary mixing 10min under conditions of 500r/min；Wherein, mixing of second solvent for ethyl acetate and hexamethylene
The weight ratio of object, ethyl acetate and hexamethylene is 2：1；
, as absolutely, to be in temperature by secondary mixing object by the solvent total amount that the first solvent and the second solvent are formed
120 DEG C, pressure is flashed under conditions of being 0.030MPa, boils off 80% solvent；
Secondary mixing object after flash distillation is subjected to stone roller page, cutting, film is made, film extrusion is molded, wherein, squeeze out temperature
It is 195 DEG C to spend, and steam pressure is controlled in 0.8MPa, molding, sizing, traction, cutting, then microwave vulcanization in extrusion,
Microwave vulcanization includes successively：One section of microwave vulcanization, two sections of hot-air cures, wherein, one section of microwave vulcanization section temperature is 200 DEG C,
One section of temperature of two sections of hot-air cures is 185 DEG C, and two sections of temperature of two sections of hot-air cures are 175 DEG C；
Wherein, the particle size range of white carbon is -800 mesh of 600 mesh.
Embodiment 2
The field operation preparation method of composite cable sealing sheath, includes the following steps：
In parts by weight, 40 parts of polypropylene, 80 parts of the first solvent, 120 parts of methyl vinyl silicone rubber, 35 parts of carbon black, system
8 parts of 20 parts of pretreatment enhancers, 8 parts of zinc oxide, 3 parts of Fe-series catalyst and antioxidant in standby example 2 are in 190 DEG C of rotating speeds
A mixing 15min is carried out under conditions of 200r/min, then stands 30min in 120 DEG C；
12 parts of 80 parts of the second solvent, 25 parts of white carbon and vulcanizing agent are added in a mixing object after standing in 170 DEG C
Rotating speed carries out secondary mixing 8min under conditions of being 400r/min；Wherein, mixing of second solvent for ethyl acetate and hexamethylene
The weight ratio of object, ethyl acetate and hexamethylene is 2：3；
Using by the solvent total amount that the first solvent and the second solvent are formed as absolutely, by secondary mixing object in temperature be 90
DEG C, pressure is flashed under conditions of being 0.025MPa, boils off 60% solvent；
Secondary mixing object after flash distillation is subjected to stone roller page, cutting, film is made, film extrusion is molded, wherein, squeeze out temperature
It is 190 DEG C to spend, and steam pressure control is in 0.6MPa, sizing, traction, cutting, then microwave vulcanization, microwave sulphur in extrusion
Change includes successively：One section of microwave vulcanization, two sections of hot-air cures, wherein, one section of microwave vulcanization section temperature is 190 DEG C, two sections of heat
One section of temperature of air cure is 180 DEG C, and two sections of temperature of two sections of hot-air cures are 165 DEG C；
Wherein, the particle size range of white carbon is -800 mesh of 600 mesh.
Embodiment 3
The field operation preparation method of composite cable sealing sheath, includes the following steps：
In parts by weight, 35 parts of polypropylene, 65 parts of the first solvent, 110 parts of methyl vinyl silicone rubber, 30 parts of carbon black, system
6.5 parts of 15 parts of pretreatment enhancers, 6.5 parts of zinc oxide, 2.5 parts of Fe-series catalyst and antioxidant in standby example 3 are in 195 DEG C of rotating speeds
To carry out a mixing 18min under conditions of 250r/min, then 35min is stood in 130 DEG C；
9.5 parts of 65 parts of the second solvent, 21 parts of white carbon and vulcanizing agent are added in a mixing object after standing in 175 DEG C
Rotating speed carries out secondary mixing 9min under conditions of being 450r/min；Wherein, mixing of second solvent for ethyl acetate and hexamethylene
The weight ratio of object, ethyl acetate and hexamethylene is 2：2；
, as absolutely, to be in temperature by secondary mixing object by the solvent total amount that the first solvent and the second solvent are formed
105 DEG C, pressure is flashed under conditions of being 0.028MPa, boils off 70% solvent；
Secondary mixing object after flash distillation is subjected to stone roller page, cutting, film is made, film extrusion is molded, wherein, squeeze out temperature
It is 193 DEG C to spend, and steam pressure control is in 0.7MPa, sizing, traction, cutting, then microwave vulcanization, microwave sulphur in extrusion
Change includes successively：One section of microwave vulcanization, two sections of hot-air cures, wherein, one section of microwave vulcanization section temperature is 195 DEG C, two sections of heat
One section of temperature of air cure is 183 DEG C, and two sections of temperature of two sections of hot-air cures are 170 DEG C；
Wherein, the particle size range of white carbon is -800 mesh of 600 mesh.
Comparative example 1
Field operation composite cable sealing sheath is prepared according to the method for embodiment 3, unlike, the particle size range of white carbon
For -1200 mesh of 1000 mesh, the second solvent is ethyl acetate, and the additive amount of carbon black is changed to 40 parts.
Comparative example 2
Field operation composite cable sealing sheath is prepared according to the method for embodiment 3, unlike, the particle size range of white carbon
For -1200 mesh of 1000 mesh, the second solvent is ethyl acetate, and the additive amount of carbon black is changed to 40 parts, in addition, pretreatment is increased
Strong 10 parts of mixtures with 10 parts of boron fibres and silane coupling agent of agent are replaced, wherein, boron fibre and each 5 parts of silane coupling agent.
Comparative example 3
The field operation preparation method of composite cable sealing sheath, includes the following steps：
In parts by weight, the pre- place in 35 parts of polypropylene, 110 parts of methyl vinyl silicone rubber, 30 parts of carbon black, preparation example 3
6.5 parts of 15 parts of reinforcing agent, 6.5 parts of zinc oxide, 2.5 parts of Fe-series catalyst and antioxidant are managed in 195 DEG C of rotating speeds as 250r/min's
Under the conditions of carry out a mixing 18min, then in 130 DEG C stand 35min；
Added in a mixing object after standing 9.5 parts of 21 parts of white carbon and vulcanizing agent in 175 DEG C of rotating speeds be 450r/
Secondary mixing 9min is carried out under conditions of min；Wherein, mixture of second solvent for ethyl acetate and hexamethylene, ethyl acetate
Weight ratio with hexamethylene is 2：2；
Secondary mixing object is subjected to stone roller page, cutting, film is made, film extrusion is molded, wherein, extrusion temperature 193
DEG C, steam pressure is controlled in 0.7MPa in extrusion, and sizing, traction, cutting, then microwave vulcanization, microwave vulcanization is successively
Including：One section of microwave vulcanization, two sections of hot-air cures, wherein, one section of microwave vulcanization section temperature is 195 DEG C, two sections of hot-air sulphur
The one section of temperature changed is 183 DEG C, and two sections of temperature of two sections of hot-air cures are 170 DEG C；
Wherein, the particle size range of white carbon is -800 mesh of 600 mesh.
Comparative example 4
The field operation preparation method of composite cable sealing sheath, includes the following steps：
In parts by weight, 35 parts of polypropylene, 65 parts of the first solvent, 110 parts of methyl vinyl silicone rubber, 30 parts of carbon black, system
6.5 parts of 15 parts of pretreatment enhancers, 6.5 parts of zinc oxide, 2.5 parts of Fe-series catalyst and antioxidant in standby example 3 are in 195 DEG C of rotating speeds
To carry out a mixing 18min under conditions of 250r/min, then 35min is stood in 130 DEG C；
9.5 parts of 65 parts of the second solvent, 21 parts of white carbon and vulcanizing agent are added in a mixing object after standing in 175 DEG C
Rotating speed carries out secondary mixing 9min under conditions of being 450r/min；Wherein, mixing of second solvent for ethyl acetate and hexamethylene
The weight ratio of object, ethyl acetate and hexamethylene is 2：2；
, as absolutely, to be in temperature by secondary mixing object by the solvent total amount that the first solvent and the second solvent are formed
105 DEG C, pressure is flashed under conditions of being 0.028MPa, boils off 40% solvent；
Secondary mixing object after flash distillation is subjected to stone roller page, cutting, film is made, film extrusion is molded, wherein, squeeze out temperature
It is 193 DEG C to spend, and steam pressure control is in 0.7MPa, sizing, traction, cutting, then microwave vulcanization, microwave sulphur in extrusion
Change includes successively：One section of microwave vulcanization, two sections of hot-air cures, wherein, one section of microwave vulcanization section temperature is 195 DEG C, two sections of heat
One section of temperature of air cure is 183 DEG C, and two sections of temperature of two sections of hot-air cures are 170 DEG C；
Wherein, the particle size range of white carbon is -800 mesh of 600 mesh.
Detect example 1
In embodiment 1-3 and comparative example 1-4, it is divided into activity duration and actual operating time.Activity duration is according to system
The effective operation time that Preparation Method carries out, and actual operating time includes because of the time of the shutdown such as glutinous roller of cleaning is from going into operation
To the total time for preparing completion.
In preparation process, the mixing situation in embodiment 1-3 and comparative example 1-4 is observed, it is timely to there is glutinous roller phenomenon
Cleaning is shut down, continues operation after cleaning, downtime is not counted in the activity duration.
It was found that in embodiment 1-3, comparative example 4, substantially without glutinous roller phenomenon, material is uniform, mixes all right, embodiment 1-
3rd, the activity duration in comparative example 4 is actual operating time.And in comparative example 1-3, repeatedly there is glutinous roller phenomenon, phenomenon is object
Expect into bulk, sticking cannot fall on roller, and operating personnel is needed repeatedly to shut down cleaning and is got off, according to statistics, the reality in comparative example 2,3
The border operating time increases significantly than the activity duration, and wherein the activity duration increases 60% in comparative example 2, is actually grasped in comparative example 3
It is longer by 50% than activity duration to make the time, and the actual operating time in comparative example 1 is longer by 45% than activity duration.
Detect example 2
Sheath composite rubber material in embodiment 1-3 and comparative example 1-4 is according to the side in national standard GB/T1040-2006
Method tested for tensile strength, the AG-20KNG of puller system model Shimadzu Corporation production；Rate of extension is 500mm/min, test temperature
Spend is 23 DEG C.Tensile strength retention rate and -70 DEG C of low temperature after ultraviolet light (argon arc lamp) aging 720h are tested according to UL62-2001
Whether bending cracks.Single sampling no less than 10.
It was found that tensile strength, tensile strength retention rate compare between each sample of composite rubber material in embodiment 1-3
Uniformly, and the tensile strength being above in comparative example 1-4 and at least the 5% of tensile strength retention rate.In wherein embodiment 1-3,
Minimum with the performance of embodiment 1, the average tensile strength in embodiment 1 is 21.3N/mm2, ultraviolet light and aging 720h (argon arc lamp)
Tensile strength retention rate is 94% afterwards.
Although the peak of the tensile strength and tensile strength retention rate in comparative example 1-3 differs not with embodiment 1
Greatly, still, the detection parameters difference of each sample is larger in comparative example 1-3, the most apparent with the performance of sample in comparative example 2,3,
The tensile strength that wherein there is sample in comparative example 2,3 can reach 19.5N/mm2, and the tensile strength of minimum sample only has
16.1N/mm2。
Moreover, it is observed that under -70 DEG C of low temperature bend tests, the not cracking feelings of sample in embodiment 1-3
Condition, and cracking situation in comparative example 1-3, cracking ratio is in 30-70%.
It can be seen that the present invention not only solves the glutinous roller phenomenon in preparation process, and obtained compounded rubber
The performance of sample is more uniform, this is uniformly undivided with being kneaded in preparation process.
And roller phenomenon is sticked in comparative example 1-3 and is repeatedly occurred, actual operating time is caused not only to be grown, but also obtained compound rubber
The performance of glue is uneven, the tensile strength some of sample have greatly it is small, this in preparation process raw material it is blocking, it is impossible to be uniformly mixed
It is undivided.Moreover, although addO-on therapy is not much different with embodiment 3, the tensile strength and anti-tensile of sample are strong
Retention rate is spent compared with being declined in embodiment 3, is traced it to its cause, it may be possible to which the extension of actual operating time leads to raw material in height
It is cracked in the case of heat.
Although and comparative example 4 in preparation process stick roller, the tensile strength of sample is relatively low, and tensile strength only has
18.9N/mm2, under -70 DEG C of low temperature bend tests, cracking ratio is 20%.As it can be seen that the additive amount of simple adjusting solvent, not
It can obtain the compounded rubber of better performances.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail, within the scope of the technical concept of the present invention, a variety of simple variants can be carried out to technical scheme of the present invention, this
A little simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (10)
1. a kind of field operation preparation method of composite cable sealing sheath, which is characterized in that the described method comprises the following steps：
(1) boron fibre with silane coupling agent is mixed, obtains pretreatment enhancers；
(2) by polypropylene, the first solvent, methyl vinyl silicone rubber, carbon black, pretreatment enhancers, zinc oxide, Fe-series catalyst
A mixing is carried out with antioxidant, is then stood；
(3) the second solvent, white carbon and vulcanizing agent are added in a mixing object after standing and carries out secondary mixing；
(4) by the solvent total amount that the first solvent and the second solvent are formed, as absolutely, secondary mixing object to be flashed, is steamed
Remove the solvent of 60-80%；
(5) the secondary mixing object after flash distillation is subjected to stone roller page, cutting, film is made, film extrusion is molded, sizing, draws, cut
It cuts, microwave vulcanization；
Wherein, the particle size range of white carbon is -800 mesh of 600 mesh, and the weight ratio of carbon black and methyl vinyl silicone rubber is 1：3-5.
2. preparation method according to claim 1, wherein, in parts by weight, 30-40 parts of polypropylene, the first solvent 50-80
Part, 100-120 parts of methyl vinyl silicone rubber, 25-35 parts of carbon black, 10-20 parts of pretreatment enhancers, 5-8 parts of zinc oxide, iron system
2-3 parts of catalyst, 5-8 parts of antioxidant, 7-12 parts of the second 50-80 parts of solvent, 18-25 parts of white carbon and vulcanizing agent.
3. preparation method according to claim 1 or 2, wherein, the weight ratio of boron fibre and silane coupling agent is 2:1-3；
And/or
Silane coupling agent is KH550, one or more in KH560, KH570；Preferably,
Silane coupling agent is the mixture of KH550 and KH570, wherein, the weight ratio of KH550 and KH570 are 2:2-3.
4. preparation method according to claim 1 or 2, wherein, in step (1), mixing condition includes：In 130-180 DEG C
Rotating speed mixes 30-50min under conditions of being 500-800rpm.
5. preparation method according to claim 1 or 2, wherein, the condition of a mixing includes：In 190-200 DEG C of rotating speed
For mixing 15-20min under conditions of 200-300r/min；And/or
The condition of standing includes：30-40min is stood in 120-140 DEG C.
6. preparation method according to claim 1 or 2, wherein, the condition of secondary mixing includes：In 170-180 DEG C of rotating speed
For mixing 8-10min under conditions of 400-500r/min；And/or
Extrusion condition includes：Extrusion temperature is 190-195 DEG C, and steam pressure control is in 0.6-0.8MPa in extrusion.
7. preparation method according to claim 1 or 2, wherein, microwave vulcanization includes successively：One section of microwave vulcanization, two sections
Hot-air cure；Preferably,
One section of microwave vulcanization section temperature is 190-200 DEG C, and one section of temperature of two sections of hot-air cures is 180-185 DEG C, two sections of heat
Two sections of temperature of air cure are 165-175 DEG C.
8. preparation method according to claim 1 or 2, wherein, the condition of flash distillation includes：Temperature is 90-120 DEG C, pressure
For 0.025-0.030MPa.
9. preparation method according to claim 1 or 2, wherein, Fe-series catalyst is triacetyl acetone iron and isooctyl acid
It is one or more in the organoiron compounds such as iron；And/or
First solvent is one or more in lauryl alcohol, ethyl acetate, glycerine and hexamethylene；And/or
Second solvent is ethyl acetate and the mixture of hexamethylene；Preferably, the weight of ethyl acetate and hexamethylene in the second solvent
Amount is than being 2：1-3；And/or
Antioxidant is irgasfos 168 and/or antioxidant 264；And/or
Vulcanizing agent is one or more in sulphur, benzoyl peroxide and urethanes；And/or
Polyacrylic weight average molecular weight is 10000-30000.
10. the field operation composite cable sealing sheath being prepared according to claim 1-9 any one of them preparation methods.
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| EP0862187A2 (en) * | 1997-02-28 | 1998-09-02 | Servicios Condumex S.A. De C.V. | Formulation for the insulating protection of electric conductors |
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