CN108976808A - A kind of power equipment insulating materials and preparation method thereof - Google Patents
A kind of power equipment insulating materials and preparation method thereof Download PDFInfo
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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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- 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
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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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
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Abstract
The present invention provides a kind of power equipment insulating materials and preparation method thereof, is prepared by following component: methyl vinyl silicone rubber, epoxy resin pre-polymerization liquid, modified abutilon fibre, butyl titanate, carbon black, alumina particle, modified composite nanometre powder, dehydrated alcohol, antioxidant, compatilizer and crosslinking agent.Insulating materials prepared by the present invention has excellent mechanical property, insulation performance and high temperature resistance, there is anti-Weather and high-wearing feature simultaneously, environmentally protective no pollution to the environment, the space charge accumulation being able to suppress in insulating materials, also there is good mechanical performance, electric property and hot property, excellent combination property.
Description
Technical field
The invention belongs to insulating materials technical fields, and in particular to a kind of power equipment insulating materials and its preparation side
Method.
Background technique
In recent years, China's electric utility is quickly grown, and network system working voltage grade is continuously improved, and network size is gradually
Expand.Core equipment is mainly epoxy-based material in power grid, and epoxy resin belongs to middle polarity high polymer, macromolecular end
There is epoxy group at end, there is hydroxyl and ehter bond among key, also will continue to generate hydroxyl and ehter bond in the curing process, therefore be powered on outside
Charge inducing can be generated when field, the more nonpolar polymer of the volume resistivity of epoxy resin is caused to have certain gap.Currently, hanging
The epoxy resin insulation material volume resistivity for netting operation is relatively low, and especially under high direct voltage, charge gathers cause surface for a long time
Flashover is one of the maximum hidden danger of extra-high voltage grid safety.Since distribution of space charge unevenly will cause the abnormal of insulating materials
Become, influence the aging of its insulation degree and accelerated material, in addition domestic air pollution is serious, and weather conditions are complicated, as electricity
The power transmission and transforming equipment pollution flashover protection still arduous task of power No.1 formidable enemy safely.
Publication No. CN101445627A discloses a kind of high-voltage DC cable insulating material and preparation method thereof, the hair
It is bright the technical solution adopted is that, by the low density polyethylene (LDPE) of 100 parts by weight, the antioxidant of 0.1-1 parts by weight, 0.5-5 parts by weight
Maleic anhydride, be put into mixer and be kneaded, then add 0.1-5 parts by weight crosslinking agent be kneaded 10-15 minutes, obtain height
Direct current cables insulating materials is pressed, the insulating materials of invention preparation can effectively improve the mechanical property and electricity of high voltage direct current cable
Gas performance, but the invention cannot improve the corrosion resistance and anti-aging property of material well, therefore be not suitable for promoting life
It produces.
Publication No. CN103242643A discloses a kind of Ultrahigh-voltage direct-current cable insulation material and preparation method thereof, group
Point and its content are as follows: polyphenylene oxide resin 20-60 parts by weight, elastomer 25-40 parts by weight, compatilizer 0-5 parts by weight, antioxidant
0.1-1 parts by weight, the inorganic nano-particle 0.5-5 parts by weight of Ionic Liquid Modified, crosslinking agent 0.1-5 parts by weight.System of the present invention
Standby insulating materials flexibility is good, good mechanical performance, and can effectively improve superhigh voltage DC cable mechanical property and
Electric property, but the invention preparation process is complicated, higher cost, and raw material acquisition is more difficult, is also unfavorable for extensive life
It produces.
Accordingly, it is desirable to provide a kind of insulating materials of better High-performance power equipment, to improve the prior art not
Foot, this is also the defeated change network of reliable to building security, stability and high efficiency electric power, promotion China's transmission of electricity is horizontal and saving resource has
Significance.
Summary of the invention
The object of the present invention is to provide a kind of power equipment insulating materials and preparation method thereof, insulation prepared by the present invention
Material has excellent mechanical property, insulation performance and high temperature resistance, while having anti-Weather and high-wearing feature, green
Environmentally friendly no pollution to the environment, the space charge accumulation being able to suppress in insulating materials, also has good mechanical performance, electrical resistance
Energy and hot property, excellent combination property.
The present invention provides the following technical solutions:
A kind of power equipment insulating materials, the raw material including following parts by weight: 25-28 parts of methyl vinyl silicone rubber, epoxy
11-14 parts of resin prepolymer liquid, modified abutilon fibre 8-13 parts, 6-10 parts of butyl titanate, 8-14 parts of carbon black, alumina particle 6-11
Part, composite nanometre powder 7-12 parts modified, 4-7 parts of dehydrated alcohol, 3-6 parts of antioxidant, 4-7 parts of compatilizer and 3-6 parts of crosslinking agent.
Preferably, the insulating materials includes the raw material of following parts by weight: 26-28 parts of methyl vinyl silicone rubber, epoxy
11-13 parts of resin prepolymer liquid, modified abutilon fibre 10-13 parts, 8-10 parts of butyl titanate, 8-12 parts of carbon black, alumina particle 8-
11 parts, composite nanometre powder 7-11 parts modified, 5-7 parts of dehydrated alcohol, 3-5 parts of antioxidant, 5-7 parts of compatilizer and crosslinking agent 4-6
Part.
Preferably, the insulating materials includes the raw material of following parts by weight: 27 parts of methyl vinyl silicone rubber, epoxy resin
12 parts of pre-polymerization liquid, modified 12 parts of abutilon fibre, 9 parts of butyl titanate, 11 parts of carbon black, 9 parts of alumina particle, modified composite nano powder
8 parts of end, 6 parts of dehydrated alcohol, 3 parts of antioxidant, 5 parts of compatilizer and 4 parts of crosslinking agent.
A kind of preparation method of power equipment insulating materials, including following preparation step:
A, butyl titanate is added in dehydrated alcohol, is stirred to being completely dissolved, added alumina particle and modified piemarker is fine
Dimension, heats at 62-65 DEG C and stirs 15-18min, then be warming up to 85-90 DEG C, and heating removal dehydrated alcohol obtains material one；
B, methyl vinyl silicone rubber, epoxy resin pre-polymerization liquid, modified composite nanometre powder and material one are uniformly mixed, are imported
In mixer, the mixing 1.2-1.5h at 145-160 DEG C obtains material two；
C, material two is imported in vacuum environment, is slowly stirred 12-15min, removes bubble removing, obtains material three；
D, material three, carbon black, antioxidant, compatilizer and crosslinking agent are imported together in double screw extruder, at 220-240 DEG C
Finished product can be obtained in melting extrusion.
Preferably, the modification abutilon fibre of the step a the preparation method comprises the following steps: abutilon fibre is placed in fibre cutting machine
In, it is cut into the chopped strand of 3-5mm, then dry 0.5-0.6h is placed in 65-70 DEG C of vacuum oven, then be placed in mass concentration
To impregnate 3.5-4h in the sodium hydroxide solution of 18-20%, after the completion of immersion, take out and spend ion-cleaning to pH for neutrality, it is quiet
It sets and dries, modified abutilon fibre can be obtained.
Preferably, the modification abutilon fibre of the step a the preparation method comprises the following steps: abutilon fibre is placed in fibre cutting machine
In, it is cut into the chopped strand of 5mm, then dry 0.5h is placed in 70 DEG C of vacuum oven, then be placed in the hydrogen that mass concentration is 20%
3.5h is impregnated in sodium hydroxide solution, after the completion of immersion, taking out and spending ion-cleaning to pH is neutrality, and standing is dried, can be obtained
To modified abutilon fibre.
Preferably, the epoxy resin pre-polymerization liquid of the step b the preparation method comprises the following steps: by epoxy resin, polyethylene glycol, talcum
Powder, ultraviolet absorbing agent and light stabilizer mixing import in reaction kettle, at 75-80 DEG C, are stirred with the revolving speed of 180-200r/min
Reaction 0.4-0.5h is mixed, then is warming up to 85-90 DEG C, 10-15min is stirred to react under the revolving speed of 300-350r/min, is cooled to
After room temperature, epoxy resin pre-polymerization liquid can be obtained.
Preferably, the epoxy resin pre-polymerization liquid of the step b the preparation method comprises the following steps: by epoxy resin, polyethylene glycol, talcum
Powder, ultraviolet absorbing agent and light stabilizer mixing import in reaction kettle, at 75 DEG C, are stirred to react with the revolving speed of 200r/min
0.5h, then 90 DEG C are warming up to, it is stirred to react 12min under the revolving speed of 300r/min, after being cooled to room temperature, asphalt mixtures modified by epoxy resin can be obtained
Rouge pre-polymerization liquid.
Preferably, the modification composite nanometre powder of the step b the preparation method comprises the following steps: ammonium persulfate solution is received with compound
Rice flour end is mixed, and supersonic oscillations handle 10min, is filtered, is dried, modified composite nanometre powder can be obtained.
Preferably, the composite nanometre powder is by nano silica, nano-titanium dioxide, nano boron carbide and nanometer nitrogen
SiClx mixes.
The beneficial effects of the present invention are:
Insulating materials prepared by the present invention has excellent mechanical property, insulation performance and high temperature resistance, while having anti-day
Aging and high-wearing feature, environmentally protective no pollution to the environment are waited, the space charge accumulation being able to suppress in insulating materials also has
Good mechanical performance, electric property and hot property, excellent combination property, and its cost of raw material is cheap, from a wealth of sources, easy
In preparation, it is suitble to industrialization large-scale production manufacture.
The preparation method of modification abutilon fibre in the present invention is soaked by the refinement to abutilon fibre, alkali, it is right that its can be improved
Adsorptivity, the connectivity of nano particle in the present invention, to improve the tensile strength of the finished product insulating materials of preparation, weather-proof
Property, impact strength etc..
Epoxy resin pre-polymerization liquid in the present invention has good compatibility with the nano particle in the present invention, can mention
Dispersibility of the high nano particle in mixed system of the present invention；Epoxy resin and methyl vinyl silicone rubber all have preferable resistance to
Dielectric constant, the dielectric loss of finished product can be significantly reduced in Hou Xing, the synergistic effect of the two, and epoxy resin pre-polymerization liquid can
The thermal decomposition temperature for improving finished product insulating materials, to improve the heat resistance of finished product.
Modification composite nanometre powder in the present invention, mainly by nano silica, nano-titanium dioxide, nano boron carbide
It is mixed with nano-silicon nitride, after the oxidation of ammonium persulfate solution, more preferably, and the above nano components are all for dispersibility
Has stronger hardness, good corrosion resistance, high-temperature stability is fine, heat resistance is fine, intensity is very high, is dispersed in this hair
It is bright in mixture system so that finished product has excellent abrasion resistance properties；And nano components can also increase substantially
The volume resistivity of material, reduce surface charge accumulation, optimize field distribution, avoid edge flashing, while improve insulated with material,
The comprehensive performances such as mechanics and calorifics.
Specific embodiment
Embodiment 1
A kind of power equipment insulating materials, the raw material including following parts by weight: 25 parts of methyl vinyl silicone rubber, epoxy resin
14 parts of pre-polymerization liquid, modified 13 parts of abutilon fibre, 6 parts of butyl titanate, 14 parts of carbon black, 6 parts of alumina particle, modified composite nano powder
7 parts of end, 7 parts of dehydrated alcohol, 6 parts of antioxidant, 7 parts of compatilizer and 6 parts of crosslinking agent.
A kind of preparation method of power equipment insulating materials, including following preparation step:
A, butyl titanate is added in dehydrated alcohol, is stirred to being completely dissolved, added alumina particle and modified piemarker is fine
Dimension, heats at 65 DEG C and stirs 15min, then be warming up to 90 DEG C, and heating removal dehydrated alcohol obtains material one；
B, methyl vinyl silicone rubber, epoxy resin pre-polymerization liquid, modified composite nanometre powder and material one are uniformly mixed, are imported
In mixer, the mixing 1.5h at 145 DEG C obtains material two；
C, material two is imported in vacuum environment, is slowly stirred 12min, removes bubble removing, obtains material three；
D, material three, carbon black, antioxidant, compatilizer and crosslinking agent are imported together in double screw extruder, is melted at 240 DEG C
It squeezes out, finished product can be obtained.
The modification abutilon fibre of step a the preparation method comprises the following steps: abutilon fibre is placed in fibre cutting machine, be cut into 3mm's
Chopped strand, then be placed in 65 DEG C of vacuum oven dry 0.6h, then to be placed in the sodium hydroxide that mass concentration is 18-20% molten
4h is impregnated in liquid, after the completion of immersion, taking out and spending ion-cleaning to pH is neutrality, and standing is dried, and modified piemarker can be obtained
Fiber.
The epoxy resin pre-polymerization liquid of step b the preparation method comprises the following steps: by epoxy resin, polyethylene glycol, talcum powder, ultraviolet light inhale
It receives agent and light stabilizer mixing imports in reaction kettle, at 80 DEG C, 0.4h is stirred to react with the revolving speed of 180r/min, then be warming up to
85 DEG C, it is stirred to react 15min under the revolving speed of 350r/min, after being cooled to room temperature, epoxy resin pre-polymerization liquid can be obtained.
The modification composite nanometre powder of step b the preparation method comprises the following steps: ammonium persulfate solution is mixed with composite nanometre powder
Stirring, supersonic oscillations handle 10min, are filtered, dried, modified composite nanometre powder can be obtained.
Composite nanometre powder by nano silica, nano-titanium dioxide, nano boron carbide and nano-silicon nitride mix and
At.
Embodiment 2
A kind of power equipment insulating materials, the raw material including following parts by weight: 28 parts of methyl vinyl silicone rubber, epoxy resin
13 parts of pre-polymerization liquid, modified 10 parts of abutilon fibre, 8 parts of butyl titanate, 8 parts of carbon black, 8 parts of alumina particle, modified composite nano powder
11 parts of end, 7 parts of dehydrated alcohol, 5 parts of antioxidant, 7 parts of compatilizer and 4 parts of crosslinking agent.
A kind of preparation method of power equipment insulating materials, including following preparation step:
A, butyl titanate is added in dehydrated alcohol, is stirred to being completely dissolved, added alumina particle and modified piemarker is fine
Dimension, heats at 65 DEG C and stirs 18min, then be warming up to 85 DEG C, and heating removal dehydrated alcohol obtains material one；
B, methyl vinyl silicone rubber, epoxy resin pre-polymerization liquid, modified composite nanometre powder and material one are uniformly mixed, are imported
In mixer, the mixing 1.5h at 145 DEG C obtains material two；
C, material two is imported in vacuum environment, is slowly stirred 15min, removes bubble removing, obtains material three；
D, material three, carbon black, antioxidant, compatilizer and crosslinking agent are imported together in double screw extruder, is melted at 240 DEG C
It squeezes out, finished product can be obtained.
The modification abutilon fibre of step a the preparation method comprises the following steps: abutilon fibre is placed in fibre cutting machine, be cut into 5mm's
Chopped strand, then dry 0.6h is placed in 65 DEG C of vacuum oven, then is placed in the sodium hydroxide solution that mass concentration is 18%
4h is impregnated, after the completion of immersion, taking out and spending ion-cleaning to pH is neutrality, and standing is dried, and modified abutilon fibre can be obtained.
The epoxy resin pre-polymerization liquid of step b the preparation method comprises the following steps: by epoxy resin, polyethylene glycol, talcum powder, ultraviolet light inhale
It receives agent and light stabilizer mixing imports in reaction kettle, at 75 DEG C, 0.5h is stirred to react with the revolving speed of 180r/min, then be warming up to
90 DEG C, it is stirred to react 15min under the revolving speed of 300r/min, after being cooled to room temperature, epoxy resin pre-polymerization liquid can be obtained.
The modification composite nanometre powder of step b the preparation method comprises the following steps: ammonium persulfate solution is mixed with composite nanometre powder
Stirring, supersonic oscillations handle 10min, are filtered, dried, modified composite nanometre powder can be obtained.
Composite nanometre powder by nano silica, nano-titanium dioxide, nano boron carbide and nano-silicon nitride mix and
At.
Embodiment 3
A kind of power equipment insulating materials, the raw material including following parts by weight: 27 parts of methyl vinyl silicone rubber, epoxy resin
12 parts of pre-polymerization liquid, modified 12 parts of abutilon fibre, 9 parts of butyl titanate, 11 parts of carbon black, 9 parts of alumina particle, modified composite nano powder
8 parts of end, 6 parts of dehydrated alcohol, 3 parts of antioxidant, 5 parts of compatilizer and 4 parts of crosslinking agent.
A kind of preparation method of power equipment insulating materials, including following preparation step:
A, butyl titanate is added in dehydrated alcohol, is stirred to being completely dissolved, added alumina particle and modified piemarker is fine
Dimension, heats at 65 DEG C and stirs 15min, then be warming up to 90 DEG C, and heating removal dehydrated alcohol obtains material one；
B, methyl vinyl silicone rubber, epoxy resin pre-polymerization liquid, modified composite nanometre powder and material one are uniformly mixed, are imported
In mixer, the mixing 1.2h at 160 DEG C obtains material two；
C, material two is imported in vacuum environment, is slowly stirred 15min, removes bubble removing, obtains material three；
D, material three, carbon black, antioxidant, compatilizer and crosslinking agent are imported together in double screw extruder, is melted at 220 DEG C
It squeezes out, finished product can be obtained.
The modification abutilon fibre of step a the preparation method comprises the following steps: abutilon fibre is placed in fibre cutting machine, be cut into 5mm's
Chopped strand, then dry 0.5h is placed in 70 DEG C of vacuum oven, then is placed in the sodium hydroxide solution that mass concentration is 20%
3.5h is impregnated, after the completion of immersion, taking out and spending ion-cleaning to pH is neutrality, and standing is dried, and it is fine that modified piemarker can be obtained
Dimension.
The epoxy resin pre-polymerization liquid of step b the preparation method comprises the following steps: by epoxy resin, polyethylene glycol, talcum powder, ultraviolet light inhale
It receives agent and light stabilizer mixing imports in reaction kettle, at 75 DEG C, 0.5h is stirred to react with the revolving speed of 200r/min, then be warming up to
90 DEG C, it is stirred to react 12min under the revolving speed of 300r/min, after being cooled to room temperature, epoxy resin pre-polymerization liquid can be obtained.
The modification composite nanometre powder of step b the preparation method comprises the following steps: ammonium persulfate solution is mixed with composite nanometre powder
Stirring, supersonic oscillations handle 10min, are filtered, dried, modified composite nanometre powder can be obtained.
Composite nanometre powder by nano silica, nano-titanium dioxide, nano boron carbide and nano-silicon nitride mix and
At.
Comparative example 1
Experimental comparison is carried out using the common insulating materials of power equipment in the prior art.
The finished product for detecting above embodiments and comparative example preparation, obtains following detection data:
Table one:
| Detection project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 |
| Elasticity modulus (MPa) | 560 | 575 | 575 | 540 |
| Tensile strength (MPa) | 24.8 | 25.3 | 25.5 | 22.1 |
| Elongation at break (%) | 630 | 620 | 640 | 560 |
| Relative dielectric constant | 2.12 | 2.16 | 2.12 | 2.18 |
| Dielectric dissipation factor | 3.6×10-5 | 3.3×10-5 | 3.8×10-5 | 2.2×10-5 |
| Volume resistivity (Ω m) | 5.2×1015 | 5.1×1015 | 5.4×1015 | 4.9×1015 |
By the resulting experimental data of table one, it can be deduced that, the properties of the finished product of preparation method preparation of the invention are significantly excellent
Different from common product in the prior art, and the preferred preparation method in the embodiment of the present invention 3, obtain at moral character
It can be the most excellent.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although referring to aforementioned reality
Applying example, invention is explained in detail, for those skilled in the art, still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features.It is all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of power equipment insulating materials, which is characterized in that the raw material including following parts by weight: methyl vinyl silicone rubber
25-28 parts, 11-14 parts of epoxy resin pre-polymerization liquid, modified abutilon fibre 8-13 parts, 6-10 parts of butyl titanate, 8-14 parts of carbon black, oxygen
Change alumina particles 6-11 part, modification composite nanometre powder 7-12 parts, 4-7 parts of dehydrated alcohol, 3-6 parts of antioxidant, 4-7 parts of compatilizer and
3-6 parts of crosslinking agent.
2. a kind of power equipment insulating materials according to claim 1, which is characterized in that the insulating materials include with
The raw material of lower parts by weight: 26-28 parts of methyl vinyl silicone rubber, 11-13 parts of epoxy resin pre-polymerization liquid, modified abutilon fibre 10-
13 parts, 8-10 parts of butyl titanate, 8-12 parts of carbon black, 8-11 parts of alumina particle, modified composite nanometre powder 7-11 parts, anhydrous second
5-7 parts of alcohol, 3-5 parts of antioxidant, 5-7 parts of compatilizer and 4-6 parts of crosslinking agent.
3. a kind of power equipment insulating materials according to claim 1, which is characterized in that the insulating materials include with
The raw material of lower parts by weight: 27 parts of methyl vinyl silicone rubber, 12 parts of epoxy resin pre-polymerization liquid, modified 12 parts of abutilon fibre, metatitanic acid
It is 9 parts of butyl ester, 11 parts of carbon black, 9 parts of alumina particle, modified 8 parts of composite nanometre powder, 6 parts of dehydrated alcohol, 3 parts of antioxidant, compatible
5 parts and 4 parts of crosslinking agent of agent.
4. a kind of described in any item preparation methods of power equipment insulating materials of claim 1-3, which is characterized in that including
Following preparation step:
A, butyl titanate is added in dehydrated alcohol, is stirred to being completely dissolved, added alumina particle and modified piemarker is fine
Dimension, heats at 62-65 DEG C and stirs 15-18min, then be warming up to 85-90 DEG C, and heating removal dehydrated alcohol obtains material one；
B, methyl vinyl silicone rubber, epoxy resin pre-polymerization liquid, modified composite nanometre powder and material one are uniformly mixed, are imported
In mixer, the mixing 1.2-1.5h at 145-160 DEG C obtains material two；
C, material two is imported in vacuum environment, is slowly stirred 12-15min, removes bubble removing, obtains material three；
D, material three, carbon black, antioxidant, compatilizer and crosslinking agent are imported together in double screw extruder, at 220-240 DEG C
Finished product can be obtained in melting extrusion.
5. a kind of preparation method of power equipment insulating materials according to claim 4, which is characterized in that the step
The modification abutilon fibre of a the preparation method comprises the following steps: abutilon fibre is placed in fibre cutting machine, be cut into the chopped strand of 3-5mm, then
It is placed in 65-70 DEG C of vacuum oven dry 0.5-0.6h, then is placed in the sodium hydroxide solution that mass concentration is 18-20%
3.5-4h is impregnated, after the completion of immersion, taking out and spending ion-cleaning to pH is neutrality, and standing is dried, and modified piemarker can be obtained
Fiber.
6. a kind of preparation method of power equipment insulating materials according to claim 5, which is characterized in that the step
The modification abutilon fibre of a the preparation method comprises the following steps: abutilon fibre is placed in fibre cutting machine, be cut into the chopped strand of 5mm, then set
The dry 0.5h in 70 DEG C of vacuum oven, then be placed in the sodium hydroxide solution that mass concentration is 20% and impregnate 3.5h, it impregnates
After the completion, taking out and spending ion-cleaning to pH is neutrality, and standing is dried, and modified abutilon fibre can be obtained.
7. a kind of preparation method of power equipment insulating materials according to claim 4, which is characterized in that the step
The epoxy resin pre-polymerization liquid of b the preparation method comprises the following steps: by epoxy resin, polyethylene glycol, talcum powder, ultraviolet absorbing agent and light stablize
Agent mixing imports in reaction kettle, at 75-80 DEG C, is stirred to react 0.4-0.5h with the revolving speed of 180-200r/min, then be warming up to
85-90 DEG C, it is stirred to react 10-15min under the revolving speed of 300-350r/min, after being cooled to room temperature, epoxy resin can be obtained
Pre-polymerization liquid.
8. a kind of preparation method of power equipment insulating materials according to claim 7, which is characterized in that the step
The epoxy resin pre-polymerization liquid of b the preparation method comprises the following steps: by epoxy resin, polyethylene glycol, talcum powder, ultraviolet absorbing agent and light stablize
Agent mixing imports in reaction kettle, at 75 DEG C, 0.5h is stirred to react with the revolving speed of 200r/min, then be warming up to 90 DEG C, in 300r/
It is stirred to react 12min under the revolving speed of min, after being cooled to room temperature, epoxy resin pre-polymerization liquid can be obtained.
9. a kind of preparation method of power equipment insulating materials according to claim 4, which is characterized in that the step
The modification composite nanometre powder of b the preparation method comprises the following steps: ammonium persulfate solution and composite nanometre powder are mixed, ultrasonic wave vibration
Processing 10min is swung, filtered, dried, modified composite nanometre powder can be obtained.
10. a kind of preparation method of power equipment insulating materials according to claim 9, which is characterized in that described multiple
Nanometer powder is closed to be mixed by nano silica, nano-titanium dioxide, nano boron carbide and nano-silicon nitride.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810676812.6A CN108976808A (en) | 2018-06-27 | 2018-06-27 | A kind of power equipment insulating materials and preparation method thereof |
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| CN201810676812.6A CN108976808A (en) | 2018-06-27 | 2018-06-27 | A kind of power equipment insulating materials and preparation method thereof |
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| CN108976808A true CN108976808A (en) | 2018-12-11 |
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| CN201810676812.6A Withdrawn CN108976808A (en) | 2018-06-27 | 2018-06-27 | A kind of power equipment insulating materials and preparation method thereof |
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| CN (1) | CN108976808A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022123924A1 (en) * | 2020-12-07 | 2022-06-16 | 株式会社 東芝 | Insulating resin composition, insulating member formed of cured product of same, and electrical device |
-
2018
- 2018-06-27 CN CN201810676812.6A patent/CN108976808A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022123924A1 (en) * | 2020-12-07 | 2022-06-16 | 株式会社 東芝 | Insulating resin composition, insulating member formed of cured product of same, and electrical device |
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