CN110003843A - A kind of electric power composite insulator repair sheets and preparation method thereof - Google Patents
A kind of electric power composite insulator repair sheets and preparation method thereof Download PDFInfo
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- CN110003843A CN110003843A CN201910270975.9A CN201910270975A CN110003843A CN 110003843 A CN110003843 A CN 110003843A CN 201910270975 A CN201910270975 A CN 201910270975A CN 110003843 A CN110003843 A CN 110003843A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on 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; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
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- 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
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
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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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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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
- C08K2003/387—Borates
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- C—CHEMISTRY; METALLURGY
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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Abstract
The invention discloses a kind of electric power composite insulator repair sheets and preparation method thereof, are related to adhesive technology field.Electric power composite insulator repair sheets, according to parts by weight, raw material includes 80-200 parts of polysiloxanes, 5-40 parts of silane modified polyether prepolymer, 2-30 parts of white carbon black, 40-280 parts of fire retardant, 5-30 parts of crosslinking agent, 10-50 parts of coupling agent and 0.1-3 parts of catalyst；Preferably, polysiloxanes is hydroxyl-terminated injecting two methyl siloxane.For the preparation method of electric power composite insulator repair sheets using above-mentioned formula as raw material, the repair sheets that are prepared have good weatherability and preferable caking property, can rapid curing at low temperature, and it is preferable with the compatibility of composite insulator bulk material.
Description
Technical field
The present invention relates to adhesive technology fields, and in particular to a kind of electric power composite insulator repair sheets and its preparation side
Method.
Background technique
Power industry is to be related to the great cause of national economy, and the safe and stable operation of electric system is happy and peace basic guarantor
Barrier.Insulator is the critical product for improving outdoor power transformating and supplying facility insulation stability, and composite insulator therein is
It is synthesized by silicon rubber and filler, light weight, dielectric strength are high, are widely applied in high voltage power transmission.
Composite insulator receives ultraviolet ageing for a long time, dust storm abrasion, high/low temperature aging, lets out due to being on active service outdoors for a long time
Reveal the ablation aging of arc current, along with the pollution of certain industrial areas, the acid rain of coastal area and high conductivity mist etc., gradually
Gradually there is cracking, the aging phenomena such as dusting, pit-hole of deteriorating, large area full skirt fall off.This variation of full skirt leads to insulator
Electrical insulation properties substantially reduce, in the association of the adverse circumstances such as thick fog, rain, snow, frost humidification and working voltage leakage current
Under same-action, it is very easy to that arc discharge occurs, causes pollution flashover accident.Currently, complex procedures are replaced since power off time is short,
Electric power composite insulator Replacement and Repair work have developed it is relatively difficult, so, the simplest repair mode of repairing is exactly to use one
Kind compatibility is preferable, the cracking full skirt of appearance is bonded with by the higher glue of dielectric strength, the pit-hole of ablation is sealed, by full skirt
The partial repair renovation of surface dusting cracking, but there is no this dedicated patching materials in the market.
In currently existing product relatively be building sealant and structure sealant, but building sealant is knot after all
What the applicable cases of conjunction building trade were designed and developed, wherein many performance indicators are not appropriate for the repairing of composite insulator, such as
Building adhesive mobility is bad, operates for repair procedure relatively difficult.In addition, building sealant majority is not fire-retardant
Property or flame retardant property it is not high, this is fatal shortcoming for electrical outer insulating material；Again, building sealant
Curing time is usually longer, and especially under cryogenic, curing time is longer, this is short for power off time, high-altitude is needed to make
It is almost unworkable for the insulator repairing of industry.Finally, the material of matrix resin used in building adhesive and composite insulator
Compatibility is bad, be easy to cause the problems in stress collection；Although adhesive strength can satisfy, weatherability is bad, it is difficult to meet
The working condition requirement that long-term outdoor is on active service.
Summary of the invention
The purpose of the present invention is to provide a kind of electric power composite insulator repair sheets, it is desirable to provide it is multiple that one kind is exclusively used in electric power
The repair sheets of insulator are closed, there is good electrical insulation strength, anti-flammability and mobile construction, can realize at a lower temperature
The effect of rapid link sealing.
Another object of the present invention is to provide a kind of preparation method of electric power composite insulator repair sheets, method is easy
Easy, the repair sheets being prepared are suitable for electric power composite insulator.
The present invention solves its technical problem and adopts the following technical solutions to realize.
The invention proposes a kind of electric power composite insulator repair sheets, and according to parts by weight, raw material includes polysiloxanes
80-200 parts, 5-40 parts of silane modified polyether prepolymer, 2-30 parts of white carbon black, 40-280 parts of fire retardant, 5-30 parts of crosslinking agent, idol
Agent 10-50 parts and catalyst 0.1-3 parts of connection；
Preferably, polysiloxanes is hydroxyl-terminated injecting two methyl siloxane.
The present invention also proposes a kind of preparation method of electric power composite insulator repair sheets, comprising the following steps:
Polysiloxanes, silane modified polyether prepolymer, white carbon black, fire retardant, crosslinking agent, coupling agent and catalyst are mixed
Uniformly.
The beneficial effect that the embodiment of the present invention provides a kind of electric power composite insulator repair sheets is: it is with the poly- diformazan of terminal hydroxy group
Radical siloxane, silane modified polyether prepolymer, white carbon black and fire retardant are primary raw material, cooperation crosslinking agent, coupling agent and catalysis
Agent, obtained repair sheets have the advantage that (1) has good weatherability, are suitable for outdoor use；(2) and compound inslation
The material of sub- ontology have good compatibility, it is consistent with the consistency and elasticity of bulk material after solidification, do not easily cause stress or
The phenomenon that field strength is concentrated；(3) integrated bond of repair sheets is strong, and solidification rate is very fast at low temperature.
The present invention also provides a kind of preparation methods of electric power composite insulator repair sheets, with above-mentioned electric power compound inslation
The formula of sub- repair sheets is raw material, and method is simple, and the adhesive being prepared has good weatherability and preferably glues
Knot property, can rapid curing at low temperature, and it is preferable with the compatibility of composite insulator bulk material.
Specific embodiment
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, according to normal conditions or manufacturer builds
The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase
Product.
Electric power composite insulator repair sheets provided in an embodiment of the present invention and preparation method thereof are specifically described below.
A kind of electric power composite insulator repair sheets provided in an embodiment of the present invention, according to parts by weight, raw material include poly-
80-200 parts of siloxanes, 5-40 parts of silane modified polyether prepolymer, 2-30 parts of white carbon black, 40-280 parts of fire retardant, crosslinking agent 5-
30 parts, 10-50 parts of coupling agent and 0.1-3 parts of catalyst；Preferably, polysiloxanes is hydroxyl-terminated injecting two methyl siloxane.
Specifically, polysiloxanes can be other types, such as polymethylphenylsiloxane, but use the poly- diformazan of terminal hydroxy group
Cost is relatively low and function admirable for radical siloxane.
It is a kind of use it should be noted that using the above formula that can significantly improve the properties of repair sheets for raw material
In the special glue of electric power composite insulator.Obtained repair sheets have the advantage that (1) has good weatherability, are suitable for
Outdoor use；(2) with the material of composite insulator ontology have good compatibility, after solidification with the hardness of bulk material and bullet
Property consistent, the phenomenon that not easily causing stress or field strength to concentrate；(3) integrated bond of repair sheets is strong, at low temperature solidification rate
Comparatively fast.
Wherein, excellent weatherability may be to make the gluing being prepared due to the polysiloxanes insulating materials in formula
Agent is suitable for outdoor use, and weatherability is preferable；Good with the compatibility of the material of composite insulator ontology, this may be due to formula
In polysiloxanes insulating materials it is similar to the silastic material molecular structure of composite insulator ontology；Adhesiveness and fast low temperature
Cured performance is the effect that integral formula can reach, and the most key may be making for silane-modified polyether prepolymer
With, while the addition of coupling agent and catalyst also enhances the cementability of material and substrate and the stability of whole system.
Inventor advanced optimizes the dosage of each component in formula, it is preferable that the repairing of electric power composite insulator
The raw material of glue includes 80-150 parts of hydroxyl-terminated injecting two methyl siloxane, 10-30 parts of silane modified polyether prepolymer, white carbon black 5-20
Part, 50-200 parts of fire retardant, 8-15 parts of crosslinking agent, 20-40 parts of coupling agent and 0.2-2 parts of catalyst.Inventors have found that in formula
Each component dosage control within the above range, the comprehensive performance of repair sheets, especially adhesive property can be further increased
And stability.
Specifically, hydroxyl-terminated injecting two methyl siloxane and silane modified polyether prepolymer are commercially available raw material, such as terminal hydroxy group
Dimethyl silicone polymer is purchased from Shandong Dayi Chemical Industry Co., Ltd, and silane modified polyether prepolymer is purchased from the safe and sound green wood of Jiangsu Rui Yang
Expect Co., Ltd, silane-modified to block for trimethoxy, triethoxy sealing end or dimethoxy, diethoxy mix the poly- of sealing end
Ether.White carbon black is hydrophobic silica, and white carbon black specific surface area is 100~400m2The specific surface area of/g, white carbon black it is excessive or
The too small mechanical performance that will affect repair sheets.
Preferably, hydroxyl-terminated injecting two methyl siloxane is selected from one of the adhesive that viscosity is 5000-80000mPa.s
Or it is a variety of.The viscosity of silane modified polyether prepolymer is 5000-50000mPa.s.Hydroxyl-terminated injecting two methyl siloxane and silane change
The molecular size range of property polyether prepolymer will affect the size of viscosity, hydroxyl dimethyl silicone polymer and silane modified polyether pre-polymerization
The molecular weight of object is excessive or too small will affect the adhesive property for finally obtaining repair sheets and low-temperature setting rate.
It is further preferred that coupling agent is selected from γ-(2,3- glycidoxy) propyl trimethoxy silicane, vinyl three
(2- methoxy ethoxy) silane, gamma-aminopropyl-triethoxy-silane, N- (β-aminoethyl)-γ-aminopropyltriethoxy dimethoxy
One of silane and γ-aminoethyl amino propyl trimethoxy silane are a variety of.Inventors have found that coupling agent selection is above several
Raw material is suitble to electric power composite insulator the most, keeps the finally obtained adhesive property for repairing glue very ideal.
Specifically, fire retardant is selected from aluminium hydroxide, magnesium hydroxide, silica flour, aluminium oxide, zinc borate, decabromodiphenyl oxide, gathers
One of ammonium phosphate, hydrotalcite and antimony oxide are a variety of.Fire retardant selection is above several most appropriate, in fire retardant
Under conditions of dosage control, above several fire retardants are adapted to electric power composite insulator.But the used in amounts of fire retardant will be into
Row regulation, the very few flame retardant property that will affect repair sheets of dosage, dosage excessively will affect the construction of repair sheets.
Specifically, catalyst is in dibutyltin diacetate, dibutyl tin dilaurate, chelating tin and stannous octoate
It is one or more.The addition of catalyst mainly improves the solidification rate for repairing glue, makes repair sheets at low temperature can be quick
Solidification, to adapt to the renovation technique of electric power composite insulator.
Specifically, crosslinking agent is selected from methyl tributanoximo silane, vinyl tributyl ketoximyl silane, four butanone oximido silicon
One of alkane and methyl tri acetylacetonate oximino silane are a variety of.The addition of crosslinking agent mainly improves the adhesive strength of repair sheets,
The use of above several crosslinking agents cooperates the raw materials such as hydroxyl-terminated injecting two methyl siloxane, silane modified polyether prepolymer can be significant
Increase the adhesive strength of repair sheets.
Preferably, the raw material of electric power composite insulator repair sheets further includes 0.2-2 parts of ultraviolet absorbing agent, plasticizer 1-20
Part and levelling agent 0.5-5 parts；It is highly preferred that ultraviolet absorbing agent is 0.5-1.5 parts, plasticizer is 2-10 parts, levelling agent 1-5
Part.Plasticizer and levelling agent mainly cooperate the raw materials such as hydroxyl-terminated injecting two methyl siloxane, silane modified polyether prepolymer, can
The mobility and levelability of enhancing system, form flat and smooth surface in reparation.
Specifically, ultraviolet absorbing agent is benzotriazole compound.Levelling agent is Siloxane-Oxyalkylene Copolymers.Plasticizer
Any one or more in alcohols plasticizer, ester plasticizer and alkyl-blocked polysiloxanes, preferably alkyl are sealed
The polysiloxanes at end；Preferably, the viscosity of alkyl-blocked polysiloxanes is 500-500000mPa.s.For plasticizer and stream
The selection of flat agent mainly considers the mobility and levelling that increase system under the premise of not influencing repair sheets low temperature curing properties
Property, above several raw materials are more suitable for.
Specifically, alkyl-blocked polysiloxanes is commercially available raw material, is purchased from Shandong Dayi Chemical Industry Co., Ltd.
In some embodiments, to adapt to different process requirements, the raw material of electric power composite insulator repair sheets further includes
1-8 parts of pigment, pigment is iron oxide red and/or titanium dioxide.
The embodiment of the invention also provides a kind of preparation methods of electric power composite insulator repair sheets, comprising the following steps:
By hydroxyl-terminated injecting two methyl siloxane, silane modified polyether prepolymer, white carbon black, fire retardant, crosslinking agent, coupling agent and catalyst
It is uniformly mixed.It in a further embodiment, further include ultraviolet absorbing agent, plasticizer and levelling agent in raw material.Using directly mixed
The mode of conjunction, it is simple and easy to do.
Preferably, the preparation method of electric power composite insulator repair sheets is the following steps are included: coupling agent is uniformly mixed simultaneously
It is heated to reflux, then cooling obtains coupling agent reflux again；By hydroxyl-terminated injecting two methyl siloxane, silane modified polyether pre-polymerization
After object, white carbon black and fire retardant mixing, then mixture is mixed into 3-5h under the conditions of 100-140 DEG C of temperature and obtains just mixed glue；
Base rubber will be obtained after first mixed glue grinding, then mixes base rubber, crosslinking agent, coupling agent reflux and catalyst.
It should be noted that being mixed again with other raw materials compared to the mode directly mixed using first coupling agent is mixed
Mode can further increase the adhesive properties of repair sheets.
It preferably, is to flow 0.5-1.5h next time in 110-130 DEG C of temperature condition during being heated to reflux of coupling agent.?
120 DEG C or so of temperature condition can be such that coupling agent is better mixed uniformly, improve the adhesive strength for repairing glue.It is highly preferred that
Mixing in each step is to carry out under vacuum conditions, can be protected with nitrogen.
Feature and performance of the invention are described in further detail with reference to embodiments.
Embodiment 1
The present embodiment provides a kind of electric power composite insulator repair sheets, and raw material is according to parts by weight, comprising: viscosity is
80 parts of the hydroxyl-terminated injecting two methyl siloxane of 5000mPa.s, viscosity are 5 parts of 5000mPa.s silane modified polyether performed polymer, compare table
Area is 400cm20.1 part of 10 parts of 5 parts of 40 parts of 2 parts of white carbon black, fire retardant, crosslinking agent, coupling agent, the catalyst of/g.Wherein, it hinders
Firing agent includes 15 parts of aluminium hydroxide, 10 parts of magnesium hydroxide, 5 parts of zinc borate, 10 parts of hydrotalcite；Crosslinking agent is methyl tributanoximo
Silane；Coupling agent includes 10 parts of gamma-aminopropyl-triethoxy-silane, γ-(2,3- glycidoxy) propyl trimethoxy silicane 5
Part and 10 parts of γ-aminoethyl amino propyl trimethoxy silane；Catalyst is dibutyl tin dilaurate.
The present embodiment additionally provides a kind of preparation method of electric power composite insulator repair sheets, is original with above-mentioned formula
Material, comprising the following steps:
(1) coupling agent is stirred evenly and cooling obtains coupling agent reflux after high temperature distillation 1.5 hours at 110 DEG C.
(2) by hydroxyl-terminated injecting two methyl siloxane, silane modified polyether performed polymer, white carbon black and fire retardant in kneader
It is sufficiently mixed, mixing 5h is then vacuumized at a high temperature of 100 DEG C and obtains just mixed glue.
(3) glue just being mixed obtained by step (2) and crossing three-roll grinder, uniform base rubber is made.
(4) by base rubber that step 3 obtains it is cooling after be transferred to high force dispersion machine again, under high-speed stirred, crosslinking agent, coupling is added
Agent reflux and catalyst, and it is sufficiently mixed stirring, it discharges.
Embodiment 2
The present embodiment provides a kind of electric power composite insulator repair sheets, and raw material is according to parts by weight, comprising: viscosity is
200 parts of the hydroxyl-terminated injecting two methyl siloxane of 80000mPa.s, viscosity be 40 parts of 50000mPa.s silane modified polyether performed polymer,
Specific surface area is 100cm23 parts of 50 parts of 30 parts of 280 parts of 30 parts of white carbon black, fire retardant, crosslinking agent, coupling agent, the catalyst of/g.Its
In, fire retardant includes 180 parts of aluminium hydroxide, 35 parts of silica flour, 40 parts of ammonium polyphosphate, 15 parts of aluminium oxide, 10 parts of zinc borate；Crosslinking
Agent is 4 parts of methyl tributanoximo silane, 2 parts of four butanone oximino silane, 0.2 part of methyl tri acetylacetonate oximino silane；Coupling agent packet
Include 35 parts and 15 parts of γ-aminoethyl amino propyl trimethoxy silane of gamma-aminopropyl-triethoxy-silane；Catalyst is two acetic acid two
3 parts of butyl tin.
The present embodiment additionally provides a kind of preparation method of electric power composite insulator repair sheets, is original with above-mentioned formula
Material, comprising the following steps:
(1) coupling agent is stirred evenly and cooling obtains coupling agent reflux after high temperature distillation 0.5 hour at 130 DEG C.
(2) by hydroxyl-terminated injecting two methyl siloxane, silane modified polyether performed polymer, white carbon black and fire retardant in kneader
It is sufficiently mixed, mixing 2h is then vacuumized at a high temperature of 140 DEG C and obtains just mixed glue.
(3) glue just being mixed obtained by step (2) and crossing three-roll grinder, uniform base rubber is made.
(4) by base rubber that step 3 obtains it is cooling after be transferred to high force dispersion machine again, under high-speed stirred, crosslinking agent, coupling is added
Agent reflux and catalyst, and it is sufficiently mixed stirring, it discharges.
Embodiment 3
The present embodiment provides a kind of electric power composite insulator repair sheets, and raw material is according to parts by weight, comprising: viscosity is
80 parts of the hydroxyl-terminated injecting two methyl siloxane of 10000mPa.s, viscosity are 10 parts of 8000mPa.s silane modified polyether performed polymer, ratio
Surface area is 400cm20.2 part of 20 parts of 8 parts of 50 parts of 10 parts of white carbon black, fire retardant, crosslinking agent, coupling agent, the catalyst of/g.Its
In, fire retardant includes 40 parts of hydrotalcite, 7 parts of decabromodiphenyl oxide and 3 parts of antimony oxide；Crosslinking agent is four butanone oximino silanes；
Coupling agent includes 14 parts of γ-(2,3- glycidoxy) propyl trimethoxy silicane and γ-aminoethylaminopropyl trimethoxy silicon
6 parts of alkane；Catalyst is chelating tin.
The present embodiment additionally provides a kind of preparation method of electric power composite insulator repair sheets, is original with above-mentioned formula
Material, comprising the following steps:
(1) coupling agent is stirred evenly and cooling obtains coupling agent reflux after high temperature distillation 1 hour at 120 DEG C.
(2) by hydroxyl-terminated injecting two methyl siloxane, silane modified polyether performed polymer, white carbon black and fire retardant in kneader
It is sufficiently mixed, mixing 4h is then vacuumized at a high temperature of 120 DEG C and obtains just mixed glue.
(3) glue just being mixed obtained by step (2) and crossing three-roll grinder, uniform base rubber is made.
(4) by base rubber that step 3 obtains it is cooling after be transferred to high force dispersion machine again, under high-speed stirred, crosslinking agent, coupling is added
Agent reflux and catalyst, and it is sufficiently mixed stirring, it discharges.
Embodiment 4
The present embodiment provides a kind of electric power composite insulator repair sheets, and raw material is according to parts by weight, comprising: viscosity is
150 parts of the hydroxyl-terminated injecting two methyl siloxane of 20000mPa.s, viscosity be 30 parts of 20000mPa.s silane modified polyether performed polymer,
Specific surface area is 200cm22 parts of 40 parts of 15 parts of 100 parts of 20 parts of white carbon black, fire retardant, crosslinking agent, coupling agent, the catalyst of/g.Its
In, fire retardant includes 70 parts of magnesium hydroxide, 25 parts of decabromodiphenyl and 5 parts of antimony oxide；Crosslinking agent is methyl tributanoximo
12 parts of silane, 3 parts of vinyl tributyl ketoximyl silane；Coupling agent includes γ-(2,3- glycidoxy) propyl trimethoxy silicon
15 parts and 10 parts of γ-aminoethyl amino propyl trimethoxy silane of alkane, N- (β-aminoethyl)-γ-aminopropyltriethoxy dimethoxy silicon
5 parts of alkane, 10 parts of silane of vinyl three (2- methoxy ethoxy)；Catalyst is 1.5 parts of stannous octoate, dibutyl tin dilaurate
0.5 part.
The present embodiment additionally provides a kind of preparation method of electric power composite insulator repair sheets, is original with above-mentioned formula
Material, comprising the following steps:
(1) coupling agent is stirred evenly and cooling obtains coupling agent reflux after high temperature distillation 1 hour at 120 DEG C.
(2) by hydroxyl-terminated injecting two methyl siloxane, silane modified polyether performed polymer, white carbon black and fire retardant in kneader
It is sufficiently mixed, mixing 3h is then vacuumized at a high temperature of 120 DEG C and obtains just mixed glue.
(3) glue just being mixed obtained by step (2) and crossing three-roll grinder, uniform base rubber is made.
(4) by base rubber that step 3 obtains it is cooling after be transferred to high force dispersion machine again, under high-speed stirred, crosslinking agent, coupling is added
Agent reflux and catalyst, and it is sufficiently mixed stirring, it discharges.
Embodiment 5
The present embodiment provides a kind of electric power composite insulator repair sheets, raw material includes the composition of raw materials in embodiment 3, no
It is with place: further includes 1 part and 0.5 part of levelling agent of plasticizer, plasticizer is that viscosity is that the alkyl-blocked of 500mPa.s gathers
Siloxanes, levelling agent are Siloxane-Oxyalkylene Copolymers.
The present embodiment additionally provides a kind of preparation method of electric power composite insulator repair sheets, is original with above-mentioned formula
Material, comprising the following steps:
(1) coupling agent is stirred evenly and cooling obtains coupling agent reflux after high temperature distillation 1 hour at 120 DEG C.
(2) by hydroxyl-terminated injecting two methyl siloxane, silane modified polyether performed polymer, white carbon black, fire retardant, plasticizer and stream
Flat agent is sufficiently mixed in kneader, and mixing 3h is then vacuumized at a high temperature of 120 DEG C and obtains just mixed glue.
(3) glue just being mixed obtained by step (2) and crossing three-roll grinder, uniform base rubber is made.
(4) by base rubber that step 3 obtains it is cooling after be transferred to high force dispersion machine again, under high-speed stirred, crosslinking agent, coupling is added
Agent reflux and catalyst, and it is sufficiently mixed stirring, it discharges.
Embodiment 6
The present embodiment provides a kind of electric power composite insulator repair sheets, raw material includes the composition of raw materials in embodiment 4, no
It is with place: further includes 20 parts and 5 parts of levelling agent of plasticizer, plasticizer is that viscosity is the alkyl-blocked of 500000mPa.s
Polysiloxanes, levelling agent are Siloxane-Oxyalkylene Copolymers.
The present embodiment additionally provides a kind of preparation method of electric power composite insulator repair sheets, is original with above-mentioned formula
Material, specific steps are same as Example 5.
Embodiment 7
The present embodiment provides a kind of electric power composite insulator repair sheets, raw material includes the composition of raw materials in embodiment 3, no
It is with place: further includes 2 parts and 1 part of levelling agent of plasticizer, plasticizer is the alkyl-blocked poly- silicon that viscosity is 5000mPa.s
Oxygen alkane, levelling agent are Siloxane-Oxyalkylene Copolymers.
The present embodiment additionally provides a kind of preparation method of electric power composite insulator repair sheets, is original with above-mentioned formula
Material, specific steps are same as Example 5.
Embodiment 8
The present embodiment provides a kind of electric power composite insulator repair sheets, raw material includes the composition of raw materials in embodiment 4, no
It is with place: further includes 10 parts and 5 parts of levelling agent of plasticizer, plasticizer is that viscosity is that the alkyl-blocked of 50000mPa.s gathers
Siloxanes, levelling agent are Siloxane-Oxyalkylene Copolymers.
The present embodiment additionally provides a kind of preparation method of electric power composite insulator repair sheets, is original with above-mentioned formula
Material, specific steps are same as Example 5.
Embodiment 9
The present embodiment provides a kind of electric power composite insulator repair sheets, raw material includes the composition of raw materials in embodiment 8, no
It is with place: further includes 0.2 part and 1 part of iron oxide red of ultraviolet absorbing agent (phenylpropyl triazole).
The present embodiment additionally provides a kind of preparation method of electric power composite insulator repair sheets, is original with above-mentioned formula
Material, comprising the following steps:
(1) coupling agent is stirred evenly and cooling obtains coupling agent reflux after high temperature distillation 1 hour at 120 DEG C.
(2) by hydroxyl-terminated injecting two methyl siloxane, silane modified polyether performed polymer, white carbon black, fire retardant, plasticizer, stream
Flat agent, ultraviolet absorbing agent and iron oxide red are sufficiently mixed in kneader, and mixing 4h is then vacuumized at a high temperature of 120 DEG C and is obtained
Just mixed glue.
(3) glue just being mixed obtained by step (2) and crossing three-roll grinder, uniform base rubber is made.
(4) by base rubber that step 3 obtains it is cooling after be transferred to high force dispersion machine again, under high-speed stirred, crosslinking agent, coupling is added
Agent reflux and catalyst, and it is sufficiently mixed stirring, it discharges.
Embodiment 10
The present embodiment provides a kind of electric power composite insulator repair sheets, raw material includes the composition of raw materials in embodiment 8, no
It is with place: further includes 2 parts and 8 parts of titanium dioxide of ultraviolet absorbing agent (benzo triazole).
The present embodiment additionally provides a kind of preparation method of electric power composite insulator repair sheets, is original with above-mentioned formula
Material, specific steps are same as Example 9.
Embodiment 11
A kind of composition of raw materials the present embodiment provides electric power composite insulator repair sheets, in composition of raw materials and embodiment 4
It is identical.
The present embodiment additionally provides a kind of preparation method of electric power composite insulator repair sheets, is original with above-mentioned formula
Material, comprising the following steps:
After each component for removing crosslinking agent, coupling agent and catalyst in formula was mixed roller at normal temperature, addition crosslinking agent,
Coupling agent and catalyst stir filling discharging after 2h.
Embodiment 12
A kind of composition of raw materials the present embodiment provides electric power composite insulator repair sheets, in composition of raw materials and embodiment 5
It is identical.
The present embodiment additionally provides a kind of preparation method of electric power composite insulator repair sheets, is original with above-mentioned formula
Material, comprising the following steps:
By in formula remove crosslinking agent, coupling agent and catalyst each component at 120 DEG C normal pressure mixing 7h, cool to room temperature
Afterwards, it discharges after being stirred 1 hour after addition crosslinking agent, coupling agent and catalyst filling.
Comparative example 1
This comparative example provides a kind of repair sheets, and composition of raw materials is roughly the same with embodiment 8, the difference is that: formula
Middle hydroxyl-terminated injecting two methyl siloxane replaces with the polyphenyl methyl siloxane of identical viscosities.
This comparative example also provides a kind of preparation method of repair sheets, and specific steps are referring to embodiment 8.
Comparative example 2
This comparative example provides a kind of repair sheets, and composition of raw materials is roughly the same with embodiment 8, the difference is that: formula
Middle hydroxyl-terminated injecting two methyl siloxane replaces with the polyurethane of identical viscosities.
This comparative example also provides a kind of preparation method of repair sheets, and specific steps are referring to embodiment 8.
Comparative example 3
This comparative example provides a kind of repair sheets, and composition of raw materials is roughly the same with embodiment 8, the difference is that: formula
Middle hydroxyl-terminated injecting two methyl siloxane replaces with the epoxy resin of identical viscosities.
This comparative example also provides a kind of preparation method of repair sheets, and specific steps are referring to embodiment 8.
Comparative example 4
This comparative example provides a kind of repair sheets, and composition of raw materials is roughly the same with embodiment 8, the difference is that: it does not wrap
Silane modified polyether performed polymer is included, and silane modified polyether performed polymer is replaced with to the hydroxyl-terminated injecting two methyl siloxane of equivalent.
Specifically include: 180 parts of the hydroxyl-terminated injecting two methyl siloxane that viscosity is 20000mPa.s, specific surface area are
200cm210 parts of 2 parts of 40 parts of 15 parts of 100 parts of 20 parts of white carbon black, fire retardant, crosslinking agent, coupling agent, catalyst, the plasticizer of/g and
5 parts of levelling agent.Wherein, fire retardant includes 70 parts of magnesium hydroxide, 25 parts of decabromodiphenyl and 5 parts of antimony oxide；Crosslinking agent is first
12 parts of base tributanoximo silane, 3 parts of vinyl tributyl ketoximyl silane；Coupling agent includes γ-(2,3- glycidoxy) third
15 parts and 10 parts of γ-aminoethyl amino propyl trimethoxy silane of base trimethoxy silane, N- (β-aminoethyl)-γ-aminopropyl first
5 parts of base dimethoxysilane, 10 parts of silane of vinyl three (2- methoxy ethoxy)；Catalyst is 1.5 parts of stannous octoate, February
0.5 part of dilaurylate；Plasticizer is the alkyl-blocked polysiloxanes that viscosity is 3000mPa.s；Levelling agent changes for polyethers
Property polysiloxanes.
This comparative example also provides a kind of preparation method of repair sheets, and using above-mentioned formula as raw material, specific steps are referring to real
Apply example 8.
Comparative example 5
This comparative example provides a kind of repair sheets, and composition of raw materials is roughly the same with embodiment 8, the difference is that: coupling
Agent includes 20 parts of γ-methacryloxypropyl trimethoxy silane, 20 parts of three isostearic acid isopropyl titanate.
This comparative example also provides a kind of preparation method of repair sheets, and using above-mentioned formula as raw material, specific steps are referring to real
Apply example 8.
Test example 1
The weatherability, adhesive strength and low-temperature setting rate of repair sheets are obtained in testing example 1-12 and comparative example 1-5,
It the results are shown in Table 1.
Test method: (1) weatherability: the exchange referring to national standard GB/T 19519-2004 nominal voltage higher than 1000V is aerial
Route composite insulator --- definition, test method and acceptance criteria-appendix C.(2) adhesive strength: GBT 14683- is referred to
6. test methods carry out in 2017 silicone and modified silicone building sealant, and it is glass on one side that bond, which is silicone rubber material on one side,
Glass.(3) low-temperature setting rate: test ambient temperature is controlled at -10~10 DEG C, is carried out referring to GB/T13477.5-2002 regulation
Test；(4) flame retardant property: referring to GB/T13488 rubber combustion performance measurement-vertical combustion.
The performance test results of 1 repair sheets of table
In conclusion a kind of electric power composite insulator repair sheets provided by the invention, with terminal hydroxy group polydimethylsiloxanes
Alkane, silane modified polyether prepolymer, white carbon black and fire retardant are primary raw material, and cooperation crosslinking agent, coupling agent and catalyst obtain
Repair sheets have the advantage that
(1) there is good weatherability, be suitable for outdoor use；(2) have with the material of composite insulator ontology fine
Compatibility, consistent with the consistency and elasticity of bulk material after solidification, the phenomenon that not easily causing stress or field strength to concentrate；(3) it repairs
The integrated bond of glue is strong, and solidification rate is very fast at low temperature.
The present invention also provides a kind of preparation methods of electric power composite insulator repair sheets, with above-mentioned electric power compound inslation
The formula of sub- repair sheets is raw material, and method is simple, and the adhesive being prepared has good weatherability and preferably glues
Knot property, can rapid curing at low temperature, and it is preferable with the compatibility of composite insulator bulk material.
Embodiments described above is a part of the embodiment of the present invention, instead of all the embodiments.Reality of the invention
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of selected implementation of the invention
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
Claims (10)
1. a kind of electric power composite insulator repair sheets, which is characterized in that according to parts by weight, raw material includes polysiloxanes 80-
200 parts, 5-40 parts of silane modified polyether prepolymer, 2-30 parts of white carbon black, 40-280 parts of fire retardant, 5-30 parts of crosslinking agent, coupling
10-50 parts and catalyst 0.1-3 parts of agent；
Preferably, the polysiloxanes is hydroxyl-terminated injecting two methyl siloxane.
2. electric power composite insulator repair sheets according to claim 1, which is characterized in that its raw material includes terminal hydroxy group poly- two
80-150 parts of methylsiloxane, 10-30 parts of silane modified polyether prepolymer, 5-20 parts of white carbon black, 50-200 parts of fire retardant, crosslinking
8-15 parts of agent, 20-40 parts of coupling agent and 0.2-2 parts of catalyst；
Preferably, the hydroxyl-terminated injecting two methyl siloxane is selected from one of the adhesive that viscosity is 5000-80000mPa.s
Or it is a variety of；
It is highly preferred that the viscosity of the silane modified polyether prepolymer is 1000-50000mPa.s；
It is further preferred that the coupling agent is selected from γ-(2,3- glycidoxy) propyl trimethoxy silicane, vinyl three
(2- methoxy ethoxy) silane, gamma-aminopropyl-triethoxy-silane, N- (β-aminoethyl)-γ-aminopropyltriethoxy dimethoxy
One of silane and γ-aminoethyl amino propyl trimethoxy silane are a variety of.
3. according to claim 1 or electric power composite insulator repair sheets described in 2, which is characterized in that the electric power is compound absolutely
The raw material of edge repair sheets further includes 0.2-2 parts of ultraviolet absorbing agent, 1-20 parts of plasticizer and 0.5-5 parts of levelling agent；
Preferably, the ultraviolet absorbing agent is 0.5-1.5 parts, the plasticizer is 2-8 parts, the levelling agent is 1-3 parts；
It is highly preferred that the raw material of the electric power composite insulator repair sheets further includes 1-8 parts of pigment, the pigment be iron oxide red and/
Or titanium dioxide.
4. electric power composite insulator repair sheets according to claim 3, which is characterized in that the ultraviolet absorbing agent is benzene
And triazole class compounds, the levelling agent are Siloxane-Oxyalkylene Copolymers.
5. electric power composite insulator repair sheets according to claim 3, which is characterized in that the plasticizer increases selected from alcohols
Mould any one or more in agent, ester plasticizer and alkyl-blocked polysiloxanes, preferably alkyl-blocked poly- silicon oxygen
Alkane；Preferably, the viscosity of the alkyl-blocked polysiloxanes is 500-500000mPa.s.
6. electric power composite insulator repair sheets according to claim 1, which is characterized in that the fire retardant is selected from hydroxide
One in aluminium, magnesium hydroxide, silica flour, aluminium oxide, zinc borate, decabromodiphenyl oxide, ammonium polyphosphate, hydrotalcite and antimony oxide
Kind is a variety of.
7. electric power composite insulator repair sheets according to claim 1, which is characterized in that the catalyst is selected from two acetic acid
Dibutyl tin, dibutyl tin dilaurate, chelating one of tin and stannous octoate or a variety of.
8. electric power composite insulator repair sheets according to claim 1, which is characterized in that the crosslinking agent is selected from methyl three
One of butanone oximino silane, vinyl tributyl ketoximyl silane, four butanone oximino silanes and methyl tri acetylacetonate oximino silane
Or it is a variety of.
9. the preparation method of electric power composite insulator repair sheets described in any one of -8 according to claim 1, which is characterized in that packet
Include following steps:
By the polysiloxanes, the silane modified polyether prepolymer, the white carbon black, the fire retardant, the crosslinking agent, institute
It states coupling agent and the catalyst is uniformly mixed.
10. the preparation method of electric power composite insulator repair sheets according to claim 9, which is characterized in that including following
Step:
The coupling agent is heated to reflux, then cooling obtains coupling agent reflux again；
After the polysiloxanes, the silane modified polyether prepolymer, the white carbon black and the fire retardant are mixed, then it will mix
Conjunction object mixes 2-5h under the conditions of 100-140 DEG C of temperature and obtains just mixed glue；
Base rubber will be obtained after the just mixed glue grinding, then by the base rubber, the crosslinking agent, the coupling agent reflux and institute
State catalyst mixing；
It preferably, is to flow 0.5-1.5h next time in 110-130 DEG C of temperature condition during being heated to reflux of the coupling agent.
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