CN113683891A - Insulating material and preparation method thereof - Google Patents
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- CN113683891A CN113683891A CN202111083454.6A CN202111083454A CN113683891A CN 113683891 A CN113683891 A CN 113683891A CN 202111083454 A CN202111083454 A CN 202111083454A CN 113683891 A CN113683891 A CN 113683891A
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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
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
- B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
- B29B7/12—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft
- B29B7/16—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft with paddles or arms
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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
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
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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
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
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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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Abstract
The invention relates to an insulating material and a preparation method thereof, wherein the insulating material comprises the following raw materials in parts by mass: 40-60 parts of methyl silicone rubber, 2-6 parts of methyltrimethoxysilane, 6-12 parts of ceramic powder, 2-5 parts of metallocene linear low-density polyethylene, 6-9 parts of fumed silica, 0.5-3 parts of stannous octoate, 0.2-3 parts of silicone oil, 3-5 parts of halogen-free phosphorus-nitrogen flame retardant, 0.5-5 parts of light stabilizer, 0.8-5 parts of toner, 2-4 parts of fixed lubricant, 1-2 parts of nano montmorillonite and 5-8 parts of plasticizer. The insulating material provided by the invention has the advantages that the design is novel, the metallocene linear low-density polyethylene plays a role in nucleation, the synergistic effect of the filler is utilized, the generation of space charge is reduced, the internal impurity ions are efficiently prevented from forming charge accumulation, the insulating property is enhanced, the high-voltage resistance of the material is improved, and the insulating material provided by the invention has the advantages of high hardness, high tensile strength, good insulating property and strong practicability.
Description
Technical Field
The invention relates to the technical field of insulating materials, in particular to an insulating material and a preparation method thereof.
Background
The high-voltage cable is a national security support and is very important for improving the comprehensive national strength of the country. The laser weapon is a direction of the key development of military enterprises due to the short reaction time, the fast irradiation speed, the high hit precision, the high radiation intensity and the great destroying power. The cable material adopted by the high-voltage cable used by the existing laser weapon is generally silicon rubber, although the silicon rubber has certain advantages in the aspects of heat radiation resistance, water resistance, stable electrical performance in high-temperature (high and cold) environment and the like, the processing technology of the silicon rubber needs vulcanization, the problems of overhigh vulcanization temperature or insufficient vulcanization and the like easily occur, the silicon rubber cannot be recycled, and the silicon rubber is expensive.
Meanwhile, the existing insulating material is poor in thermoplasticity, when the insulation of the cable joint is realized, a black rubber belt is generally adopted for winding and wrapping, so that the gap is easy to appear at the cable joint, and the wrapping effect is poor.
Disclosure of Invention
The present invention is directed to an insulating material and a method for preparing the same, which solve the above problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
an insulating material comprises the following raw materials in parts by mass: 40-60 parts of methyl silicone rubber, 2-6 parts of methyltrimethoxysilane, 6-12 parts of ceramic powder, 2-5 parts of metallocene linear low-density polyethylene, 6-9 parts of fumed silica, 0.5-3 parts of stannous octoate, 0.2-3 parts of silicone oil, 3-5 parts of halogen-free phosphorus-nitrogen flame retardant, 0.5-5 parts of light stabilizer, 0.8-5 parts of toner, 2-4 parts of fixed lubricant, 1-2 parts of nano montmorillonite and 5-8 parts of plasticizer.
As a further scheme of the invention: the insulating material comprises the following raw materials in parts by mass: 45-55 parts of methyl silicone rubber, 3-5 parts of methyltrimethoxysilane, 7-10 parts of ceramic powder, 3-4 parts of metallocene linear low-density polyethylene, 7-8 parts of fumed silica, 1-2 parts of stannous octoate, 0.9-2 parts of silicone oil, 3-4 parts of halogen-free phosphorus-nitrogen flame retardant, 2-4 parts of light stabilizer, 2-4 parts of toner, 2-3 parts of fixed lubricant, 1-2 parts of nano montmorillonite and 6-7 parts of plasticizer.
As a further scheme of the invention: the insulating material comprises the following raw materials in parts by mass: 50 parts of methyl silicone rubber, 4 parts of methyl trimethoxy silane, 8 parts of ceramic powder, 4 parts of metallocene linear low-density polyethylene, 7 parts of fumed silica, 1.5 parts of stannous octoate, 1 part of silicone oil, 4 parts of halogen-free phosphorus-nitrogen flame retardant, 3 parts of light stabilizer, 3 parts of toner, 3 parts of fixed lubricant, 2 parts of nano montmorillonite and 7 parts of plasticizer.
As a further scheme of the invention: the fixed lubricant is polytetrafluoroethylene.
As a further scheme of the invention: the toner is one or more of carbon black, cadmium yellow, ferric oxide or cadmium green.
A preparation method of the insulating material comprises the following steps:
placing methyl silicone rubber, methyltrimethoxysilane, ceramic powder, metallocene linear low-density polyethylene, fumed silica, stannous octoate, a halogen-free phosphorus-nitrogen flame retardant, toner, a fixed lubricant and nano montmorillonite in a hot-melt mixer to stir and mix at a high speed to obtain a mixture A;
adding the light stabilizer, the silicone oil and the plasticizer into the mixture A, stirring, putting into a double-screw extruder, performing melt kneading and extrusion, and then cooling and granulating the molten output to obtain the insulating material.
As a further scheme of the invention: hot melt mixer includes the agitator tank and installs pressure relief device on the agitator pipe, pressure relief device includes:
the pressure relief box is communicated with the stirring tank through an air inlet pipe;
an inner embedded groove is formed in the inner side of the pressure relief box, a blocking plate is arranged at one end of the inner embedded groove, and the blocking plate is connected with the inner side of the pressure relief box through an adjustable elastic assembly;
the treatment box is communicated with the embedded groove in the pressure relief box through a second conduit and is also communicated with the air inlet pipe through an exhaust assembly, and a control valve is mounted on the exhaust assembly;
the purification assembly is arranged on the inner side of the treatment box and is used for purifying the gas entering the treatment box;
an exhaust pipe mounted on the treatment tank and communicating with an inside of the treatment tank.
As a further scheme of the invention: elastic component includes through at least one guide post movable mounting the fly leaf in the pressure release case, one side of fly leaf pass through the spring with the shutoff board is connected, and the opposite side rotates installs the threaded rod, the threaded rod is kept away from the one end of fly leaf is run through the pressure release case and with pressure release case threaded connection.
As a further scheme of the invention: the exhaust assembly is including installing handle the drainage machine on the case, the air inlet of drainage machine through first pipe with the intake pipe intercommunication, just the control valve is installed on the first pipe, the gas outlet of drainage machine through communicating pipe with handle the inboard intercommunication of case.
As a further scheme of the invention: the purification assembly comprises a rotating sleeve rotatably arranged at the end part of a second conduit positioned in the treatment box and a stirring assembly which is arranged in the treatment box and fixedly connected with the rotating sleeve, a plurality of nozzles which are arranged in an inclined manner are arranged on the rotating sleeve, and through holes are arranged on the second conduit and the connecting position of the rotating sleeve and the nozzles;
the device also comprises a filter layer fixed in the treatment box.
Compared with the prior art, the invention has the beneficial effects that: the insulating material provided by the invention has novel design, plays a role in nucleating by metallocene linear low-density polyethylene, utilizes the synergistic effect of the filler, reduces the generation of space charge, efficiently blocks the formation of charge accumulation by internal impurity ions, enhances the insulating property, and improves the high-voltage resistance of the material.
Drawings
FIG. 1 is a schematic view of a pressure relief device in a hot melt blender.
FIG. 2 is a half-sectional view of a pressure relief device in a hot melt blender.
Fig. 3 is an enlarged view of a structure at a in fig. 2.
Fig. 4 is an enlarged view of the structure at B in fig. 2.
In the figure: 1-treatment box, 2-exhaust pipe, 3-motor, 4-communicating pipe, 5-drainage machine, 6-first conduit, 7-pressure relief box, 8-adjusting disk, 9-threaded rod, 10-second conduit, 11-air inlet pipe, 12-control valve, 13-filter layer, 14-stirring shaft, 15-stirring rod, 16-conical baffle, 17-conical head, 18-movable plate, 19-guide column, 20-spring, 21-inner money groove, 22-blocking plate, 23-rotating sleeve, 24-spray head and 25-through hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In addition, an element of the present invention may be said to be "fixed" or "disposed" to another element, either directly on the other element or with intervening elements present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Example 1
The invention provides an insulating material which comprises the following raw materials in parts by mass: 40 parts of methyl silicone rubber, 6 parts of methyltrimethoxysilane, 6 parts of ceramic powder, 2 parts of metallocene linear low-density polyethylene, 9 parts of fumed silica, 0.5 part of stannous octoate, 0.2 part of silicone oil, 3 parts of halogen-free phosphorus-nitrogen flame retardant, 0.5 part of light stabilizer, 0.8 part of toner, 2 parts of fixed lubricant, 1 part of nano montmorillonite and 5 parts of plasticizer.
Preferably, the fixing lubricant is polytetrafluoroethylene.
Preferably, the toner is one or more of carbon black, cadmium yellow, ferric oxide or cadmium green.
A preparation method of the insulating material comprises the following steps:
placing methyl silicone rubber, methyltrimethoxysilane, ceramic powder, metallocene linear low-density polyethylene, fumed silica, stannous octoate, a halogen-free phosphorus-nitrogen flame retardant, toner, a fixed lubricant and nano montmorillonite in a hot-melt mixer to stir and mix at a high speed to obtain a mixture A;
adding the light stabilizer, the silicone oil and the plasticizer into the mixture A, stirring, putting into a double-screw extruder, performing melt kneading and extrusion, and then cooling and granulating the molten output to obtain the insulating material.
Example 2
The invention provides an insulating material which comprises the following raw materials in parts by mass: 45 parts of methyl silicone rubber, 5 parts of methyltrimethoxysilane, 7 parts of ceramic powder, 3 parts of metallocene linear low-density polyethylene, 8 parts of fumed silica, 1 part of stannous octoate, 0.9 part of silicone oil, 3 parts of halogen-free phosphorus-nitrogen flame retardant, 2 parts of light stabilizer, 2 parts of toner, 2 parts of fixed lubricant, 1 part of nano montmorillonite and 6 parts of plasticizer.
Preferably, the fixing lubricant is polytetrafluoroethylene.
Preferably, the toner is one or more of carbon black, cadmium yellow, ferric oxide or cadmium green.
A preparation method of the insulating material comprises the following steps:
placing methyl silicone rubber, methyltrimethoxysilane, ceramic powder, metallocene linear low-density polyethylene, fumed silica, stannous octoate, a halogen-free phosphorus-nitrogen flame retardant, toner, a fixed lubricant and nano montmorillonite in a hot-melt mixer to stir and mix at a high speed to obtain a mixture A;
adding the light stabilizer, the silicone oil and the plasticizer into the mixture A, stirring, putting into a double-screw extruder, performing melt kneading and extrusion, and then cooling and granulating the molten output to obtain the insulating material.
Example 3
The invention provides an insulating material which comprises the following raw materials in parts by mass: 50 parts of methyl silicone rubber, 4 parts of methyl trimethoxy silane, 8 parts of ceramic powder, 4 parts of metallocene linear low-density polyethylene, 7 parts of fumed silica, 1.5 parts of stannous octoate, 1 part of silicone oil, 4 parts of halogen-free phosphorus-nitrogen flame retardant, 3 parts of light stabilizer, 3 parts of toner, 3 parts of fixed lubricant, 2 parts of nano montmorillonite and 7 parts of plasticizer.
Preferably, the fixing lubricant is polytetrafluoroethylene.
Preferably, the toner is one or more of carbon black, cadmium yellow, ferric oxide or cadmium green.
A preparation method of the insulating material comprises the following steps:
placing methyl silicone rubber, methyltrimethoxysilane, ceramic powder, metallocene linear low-density polyethylene, fumed silica, stannous octoate, a halogen-free phosphorus-nitrogen flame retardant, toner, a fixed lubricant and nano montmorillonite in a hot-melt mixer to stir and mix at a high speed to obtain a mixture A;
adding the light stabilizer, the silicone oil and the plasticizer into the mixture A, stirring, putting into a double-screw extruder, performing melt kneading and extrusion, and then cooling and granulating the molten output to obtain the insulating material.
Example 4
The invention provides an insulating material which comprises the following raw materials in parts by mass: 55 parts of methyl silicone rubber, 3 parts of methyltrimethoxysilane, 10 parts of ceramic powder, 4 parts of metallocene linear low-density polyethylene, 7 parts of fumed silica, 2 parts of stannous octoate, 2 parts of silicone oil, 4 parts of halogen-free phosphorus-nitrogen flame retardant, 4 parts of light stabilizer, 4 parts of toner, 3 parts of fixed lubricant, 2 parts of nano montmorillonite and 7 parts of plasticizer.
Preferably, the fixing lubricant is polytetrafluoroethylene.
Preferably, the toner is one or more of carbon black, cadmium yellow, ferric oxide or cadmium green.
A preparation method of the insulating material comprises the following steps:
placing methyl silicone rubber, methyltrimethoxysilane, ceramic powder, metallocene linear low-density polyethylene, fumed silica, stannous octoate, a halogen-free phosphorus-nitrogen flame retardant, toner, a fixed lubricant and nano montmorillonite in a hot-melt mixer to stir and mix at a high speed to obtain a mixture A;
adding the light stabilizer, the silicone oil and the plasticizer into the mixture A, stirring, putting into a double-screw extruder, performing melt kneading and extrusion, and then cooling and granulating the molten output to obtain the insulating material.
Example 5
The invention provides an insulating material which comprises the following raw materials in parts by mass: 60 parts of methyl silicone rubber, 2 parts of methyltrimethoxysilane, 12 parts of ceramic powder, 5 parts of metallocene linear low-density polyethylene, 6 parts of fumed silica, 3 parts of stannous octoate, 3 parts of silicone oil, 5 parts of halogen-free phosphorus-nitrogen flame retardant, 5 parts of light stabilizer, 5 parts of toner, 4 parts of fixed lubricant, 2 parts of nano montmorillonite and 8 parts of plasticizer.
Preferably, the fixing lubricant is polytetrafluoroethylene.
Preferably, the toner is one or more of carbon black, cadmium yellow, ferric oxide or cadmium green.
A preparation method of the insulating material comprises the following steps:
placing methyl silicone rubber, methyltrimethoxysilane, ceramic powder, metallocene linear low-density polyethylene, fumed silica, stannous octoate, a halogen-free phosphorus-nitrogen flame retardant, toner, a fixed lubricant and nano montmorillonite in a hot-melt mixer to stir and mix at a high speed to obtain a mixture A;
adding the light stabilizer, the silicone oil and the plasticizer into the mixture A, stirring, putting into a double-screw extruder, performing melt kneading and extrusion, and then cooling and granulating the molten output to obtain the insulating material.
Comparative example 1
The difference from the embodiment 1 is that the nano-montmorillonite modified montmorillonite is free of silicone oil and nano-montmorillonite, and other raw materials are the same
Comparative example 2
Using existing insulating materials
The hardness, high voltage resistance, tensile strength and compression set of the insulation materials prepared in examples 1 to 3 and comparative examples 1 and 2 were measured, and the results are shown in the following table:
therefore, the metallocene linear low-density polyethylene has a nucleating effect, and the synergistic effect of the filler is utilized, so that the generation of space charges is reduced, the internal impurity ions are efficiently prevented from forming charge accumulation, the insulating property is enhanced, and the high-voltage resistance of the material is improved.
Further, the hot-melt mixer of the present invention is further defined by referring to fig. 1-4, which are as follows: hot melt mixer includes the agitator tank and installs pressure relief device on the agitator pipe, pressure relief device includes:
the pressure relief box 7 is communicated with the stirring tank through an air inlet pipe 11;
an inner embedding groove 21 is formed in the inner side of the pressure relief box 7, a blocking plate 22 is arranged at one end of the inner embedding groove 21, and the blocking plate 22 is connected with the inner side of the pressure relief box 7 through an adjustable elastic assembly;
the treatment tank 1 is communicated with an inner embedding groove 21 in the pressure relief tank 7 through a second conduit 10, and is also communicated with the air inlet pipe 11 through an exhaust assembly, and a control valve 12 is mounted on the exhaust assembly;
a purification assembly installed inside the processing chamber 1 for purifying the gas introduced into the processing chamber 1;
an exhaust pipe 2, the exhaust pipe 2 being installed on the treatment tank 1 and communicating with the inside of the treatment tank 1.
Specifically, the adjustable elastic component includes movable mounting through at least one guide post 19 at the fly leaf 18 in the pressure release case 7, one side of fly leaf 18 through spring 20 with shutoff board 22 is connected, and the opposite side is rotated and is installed threaded rod 9, threaded rod 9 is kept away from the one end of fly leaf 18 runs through pressure release case 7 and with pressure release case 7 threaded connection.
The threaded rod 9 through setting up drives the fly leaf 18 and removes in pressure release case 7 when rotating to make the spring 20 change the elasticity that the shutoff board 22 produced, thereby realize required pressure value when shutoff board 22 opens relative inner caulking groove 21, realize the adjustment to the interior pressure release requirement of agitator tank, the practicality is strong.
It should be noted that the inner side of the pressure relief tank 7 is further provided with a limiting block, and when the blocking plate 22 is in the blocking state, the blocking plate 22 abuts against the limiting block.
Preferably, in order to facilitate the rotation of the threaded rod 9, an adjusting plate 8 is fixed at one end of the threaded rod 9 far away from the movable plate 18.
As still another embodiment of the present invention, the exhaust assembly includes a flow guide 5 mounted on the treatment tank 1, an air inlet of the flow guide 5 is communicated with the air inlet pipe 11 through a first conduit 6, and the control valve 12 is mounted on the first conduit 6, and an air outlet of the flow guide 5 is communicated with the inside of the treatment tank 1 through a communicating pipe 4.
The gas in the agitator pipe is guided to the treatment box 1 through the intake pipe 11 and the first pipe 6 during the operation of the drain machine 5 that the isomorphism set up, handles, and the control valve 12 that sets up is when stirring work goes on for first pipe 6 is in the shutoff state, ensures that gas can not get into to the treatment box 1 through the drain machine 5.
The purification assembly comprises a rotating sleeve 23 which is rotatably arranged at the end part of the second conduit 10 positioned in the treatment box 1 and a stirring assembly which is arranged in the treatment box 1 and is fixedly connected with the rotating sleeve 23, a plurality of spray heads 24 which are arranged in an inclined manner are arranged on the rotating sleeve 23, and through holes 25 are arranged on the second conduit 10 and the connecting positions of the rotating sleeve 23 and the spray heads 24;
and a filter layer 13 fixed in the treatment tank 1.
The stirring subassembly during operation through setting up drives and rotates sleeve 23, it drives shower nozzle 24 and rotates to rotate sleeve 23, thereby the continuation changes the air inlet position, in order to improve the treatment effeciency, do not influence the intercommunication state of shower nozzle 24 and second pipe 10 simultaneously, wherein, need explain, it has chemical reagent to pour into before handling in case 1, chemical reagent is used for carrying out preliminary treatment to the gas that gets into in case 1 handles, because shower nozzle 24 is in the slope and places the state, consequently, the flow time of multiplicable gas in case 1 is handled, in order to improve treatment.
In order to further improve the treatment effect, a conical baffle 16 is further fixed on the inner side of the treatment box 1, a through groove is formed in the middle position of the conical baffle 16, a plurality of uniformly distributed conical heads 17 are fixed on the inner side of the conical baffle 16, the arrangement of the conical baffle 16 can further increase the flowing time of the gas in the chemical reagent, and the conical heads 17 can break the bubbles to ensure that the gas is fully contacted with the chemical reagent.
Further, the stirring assembly comprises a motor 3 installed on the treatment box 1 and a stirring shaft 14 connected with an output shaft of the motor 3 and a rotating sleeve 23, a plurality of stirring rods 15 are fixed on the stirring shaft 24, and the motor 3 drives the rotating sleeve 23 and the stirring shaft 14 to rotate through the stirring shaft 14 so as to achieve the driving requirement.
Preferably, the filter layer 13 comprises an activated carbon layer.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The insulating material is characterized by comprising the following raw materials in parts by mass: 40-60 parts of methyl silicone rubber, 2-6 parts of methyltrimethoxysilane, 6-12 parts of ceramic powder, 2-5 parts of metallocene linear low-density polyethylene, 6-9 parts of fumed silica, 0.5-3 parts of stannous octoate, 0.2-3 parts of silicone oil, 3-5 parts of halogen-free phosphorus-nitrogen flame retardant, 0.5-5 parts of light stabilizer, 0.8-5 parts of toner, 2-4 parts of fixed lubricant, 1-2 parts of nano montmorillonite and 5-8 parts of plasticizer.
2. The insulating material according to claim 1, characterized in that the insulating material comprises the following raw materials in parts by mass: 45-55 parts of methyl silicone rubber, 3-5 parts of methyltrimethoxysilane, 7-10 parts of ceramic powder, 3-4 parts of metallocene linear low-density polyethylene, 7-8 parts of fumed silica, 1-2 parts of stannous octoate, 0.9-2 parts of silicone oil, 3-4 parts of halogen-free phosphorus-nitrogen flame retardant, 2-4 parts of light stabilizer, 2-4 parts of toner, 2-3 parts of fixed lubricant, 1-2 parts of nano montmorillonite and 6-7 parts of plasticizer.
3. The insulating material according to claim 2, characterized in that the insulating material comprises the following raw materials in parts by mass: 50 parts of methyl silicone rubber, 4 parts of methyl trimethoxy silane, 8 parts of ceramic powder, 4 parts of metallocene linear low-density polyethylene, 7 parts of fumed silica, 1.5 parts of stannous octoate, 1 part of silicone oil, 4 parts of halogen-free phosphorus-nitrogen flame retardant, 3 parts of light stabilizer, 3 parts of toner, 3 parts of fixed lubricant, 2 parts of nano montmorillonite and 7 parts of plasticizer.
4. An insulating material according to claim 1, wherein the fixing lubricant is polytetrafluoroethylene.
5. An insulating material according to claim 1, wherein the toner is one or more of carbon black, cadmium yellow, ferric oxide or cadmium green.
6. A method for preparing an insulating material according to any of claims 1 to 5, characterized in that it comprises the following steps:
placing methyl silicone rubber, methyltrimethoxysilane, ceramic powder, metallocene linear low-density polyethylene, fumed silica, stannous octoate, a halogen-free phosphorus-nitrogen flame retardant, toner, a fixed lubricant and nano montmorillonite in a hot-melt mixer to stir and mix at a high speed to obtain a mixture A;
adding the light stabilizer, the silicone oil and the plasticizer into the mixture A, stirring, putting into a double-screw extruder, performing melt kneading and extrusion, and then cooling and granulating the molten output to obtain the insulating material.
7. The method according to claim 6, wherein the hot-melt mixer comprises a mixing tank and a pressure relief device mounted on the mixing pipe, and the pressure relief device comprises:
the pressure relief tank (7) is communicated with the stirring tank through an air inlet pipe (11);
an inner embedded groove (21) is formed in the inner side of the pressure relief box (7), a blocking plate (22) is arranged at one end of the inner embedded groove (21), and the blocking plate (22) is connected with the inner side of the pressure relief box (7) through an adjustable elastic assembly;
the treatment tank (1) is communicated with an inner embedding groove (21) in the pressure relief tank (7) through a second conduit (10), and is also communicated with the air inlet pipe (11) through an exhaust assembly, and the exhaust assembly is provided with a control valve (12);
a purification assembly installed inside the treatment tank (1) for purifying the gas introduced into the treatment tank (1);
an exhaust pipe (2), the exhaust pipe (2) being installed on the treatment tank (1) and communicating with the inside of the treatment tank (1).
8. The method for preparing an insulating material according to claim 7, wherein the adjustable elastic component comprises a movable plate (18) movably mounted in the pressure relief tank (7) through at least one guide post (19), one side of the movable plate (18) is connected with the blocking plate (22) through a spring (20), the other side is rotatably mounted with a threaded rod (9), and one end of the threaded rod (9) far away from the movable plate (18) penetrates through the pressure relief tank (7) and is in threaded connection with the pressure relief tank (7).
9. A method for preparing an insulating material according to claim 7, characterized in that the exhaust assembly comprises a flow guide (5) mounted on the treatment tank (1), the air inlet of the flow guide (5) is communicated with the air inlet pipe (11) through a first conduit (6), and the control valve (12) is mounted on the first conduit (6), and the air outlet of the flow guide (5) is communicated with the inner side of the treatment tank (1) through a communicating pipe (4).
10. The method for preparing an insulating material according to claim 7, wherein the purifying assembly comprises a rotating sleeve (23) rotatably mounted at the end of the second conduit (10) in the processing box (1) and a stirring assembly mounted in the processing box (1) and fixedly connected with the rotating sleeve (23), the rotating sleeve (23) is provided with a plurality of nozzles (24) arranged in an inclined manner, and through holes (25) are formed in the second conduit (10) and the connecting positions of the rotating sleeve (23) and the nozzles (24);
also comprises a filter layer (13) fixed in the treatment box (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111083454.6A CN113683891B (en) | 2021-09-15 | 2021-09-15 | Insulating material and preparation method thereof |
Applications Claiming Priority (1)
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| EP2842992A1 (en) * | 2013-08-27 | 2015-03-04 | ContiTech Elastomer-Beschichtungen GmbH | Insulation material |
| CN105238055A (en) * | 2015-09-25 | 2016-01-13 | 宿松县焕然机电有限责任公司 | Motor slot wedge heat-resistance insulation composite material and preparation method thereof |
| CN105315673A (en) * | 2015-12-08 | 2016-02-10 | 苏州市享乐惠信息科技有限公司 | High-insulation silica gel plate |
| CN106065152A (en) * | 2016-08-23 | 2016-11-02 | 汪静 | Hot high pressure elasto-plasticity insulating materials and preparation method thereof |
| CN106397994A (en) * | 2016-08-23 | 2017-02-15 | 中广核三角洲（苏州）新材料研发有限公司 | Process for preparing pressure resistant radiation resistant elastomer material |
| CN107033602A (en) * | 2017-05-17 | 2017-08-11 | 醴陵市时代鑫湘科技有限公司 | Used in composite insulator high-strength silicone rubber insulating materials |
| CN213699590U (en) * | 2020-10-26 | 2021-07-16 | 山东赛亚生物科技有限公司 | Chemical liquid mixing device |
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| EP2842992A1 (en) * | 2013-08-27 | 2015-03-04 | ContiTech Elastomer-Beschichtungen GmbH | Insulation material |
| CN105238055A (en) * | 2015-09-25 | 2016-01-13 | 宿松县焕然机电有限责任公司 | Motor slot wedge heat-resistance insulation composite material and preparation method thereof |
| CN105315673A (en) * | 2015-12-08 | 2016-02-10 | 苏州市享乐惠信息科技有限公司 | High-insulation silica gel plate |
| CN106065152A (en) * | 2016-08-23 | 2016-11-02 | 汪静 | Hot high pressure elasto-plasticity insulating materials and preparation method thereof |
| CN106397994A (en) * | 2016-08-23 | 2017-02-15 | 中广核三角洲（苏州）新材料研发有限公司 | Process for preparing pressure resistant radiation resistant elastomer material |
| CN107033602A (en) * | 2017-05-17 | 2017-08-11 | 醴陵市时代鑫湘科技有限公司 | Used in composite insulator high-strength silicone rubber insulating materials |
| CN213699590U (en) * | 2020-10-26 | 2021-07-16 | 山东赛亚生物科技有限公司 | Chemical liquid mixing device |
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| CN113683891B (en) | 2023-01-31 |
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