CN109504096A - A kind of long-life high reliability solid high-temperature vulcanization electrically insulating silicone rubber material - Google Patents
A kind of long-life high reliability solid high-temperature vulcanization electrically insulating silicone rubber material Download PDFInfo
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- 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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- C08K3/20—Oxides; Hydroxides
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Abstract
The invention discloses a kind of long-life high reliability solid high-temperatures to vulcanize electrically insulating silicone rubber material, be formulated as follows: the raw-silastic continuously takes 70~90 parts, the boron-silicon rubber raw rubber takes 15~30 parts, the gas-phase silica takes 20~35 parts, it is described to take 4~6 parts of hydroxy silicon oil, it is described to take 8~10 parts of organic siliconresin, it is described to take 115~140 parts of special aluminium hydroxide, it is described to take 6~8 parts of iron oxide red, it is described to take 4~5 parts of high-performance anti creepage trace additive, the flame-retardant additive takes 4~5 parts, natural aging characteristic: accelerated aging test verifying, it can delay and postpone natural aging time of origin 8 years or more；Tensile strength: 5-6MPa；Tearing strength: 16-20kN/M；Hydrophobicity and migration of hydrophobicity: contact angle > 120 °；Breakdown voltage: 28kV/mm；Volume resistivity: 1.0 × 1015 ohm centimetres；Flame-retarding characteristic: V0 grades；Silica gel and epoxy plug caking property: 100% cohesional failure.
Description
Technical field
The present invention relates to insulating materials related fieldss, are specifically that a kind of long-life high reliability solid high-temperature vulcanization is exhausted
Edge silastic material.
Background technique
Solid high-temperature sulphurated siliastic (hereinafter referred to as: silicon rubber) is most important one kind in organosilicon product, methyl second
Alkenyl silicon rubber (VMQ) is most important kind in HTV, and methyl vinyl silicone rubber (raw rubber) is colourless, odorless, nontoxic, nothing
The jelly of mechanical admixture, but performance of raw rubber itself is poor needs to be added reinforcing agent appropriate, constitution controller, vulcanization
The auxiliary agents such as agent are kneaded together, then heat to 135 DEG C~180 DEG C hot press moulding moldings or extrusion molding is made into various products,
Product has excellent electrical insulating property, and arc resistant, corona, electric spark ability are strong, and waterproof, moisture-proof, anti-impact force, shock resistance are good,
With physiological inertia, the performances such as gas permeability.
However, existing solid high-temperature sulphurated siliastic has the following problems:
1, existing solid high-temperature sulphurated siliastic, the variation of appearance, such as loss of gloss, eclipsed, dusting, cracking, blistering, peeling
Deng；
2, existing solid high-temperature sulphurated siliastic, physical and chemical performance variation, such as molecular weight, density, hardness, heatproof
Type, light absorptive, oil resistivity, corrosion resistance, hydrophobicity etc.；
3, existing solid high-temperature sulphurated siliastic, the variation of electrical property, as sheet resistance, volume resistivity, dielectric are normal
Number, breakdown voltage etc.；
4, existing solid high-temperature sulphurated siliastic, such as adhesive force, tensile strength and elongation, tearing toughness, impact
Intensity, wearability etc..
Utility model content
Therefore, in order to solve above-mentioned deficiency, it is exhausted that the present invention provides a kind of long-life high reliability solid high-temperature vulcanization herein
Edge silastic material.
The invention is realized in this way a kind of long-life high reliability solid high-temperature vulcanization electrically insulating silicone rubber material is constructed,
Be formulated as follows: the raw-silastic continuously takes 70~90 parts, and the boron-silicon rubber raw rubber takes 15~30 parts, and the gas-phase silica takes
It is 20~35 parts, described to take 4~6 parts of hydroxy silicon oil, it is described to take 8~10 parts of organic siliconresin, it is described to take special aluminium hydroxide
It is 115~140 parts, described to take 6~8 parts of iron oxide red, it is described to take 4~5 parts of high-performance anti creepage trace additive, it is described fire-retardant to add
Agent is added to take 4~5 parts.
The present invention provides a kind of long-life high reliability solid high-temperature vulcanization electrically insulating silicone rubber material by improving, naturally old
Change characteristic: accelerated aging test verifying can delay and postpone natural aging time of origin 8 years or more；Tensile strength: 5-
6MPa；Tearing strength: 16-20kN/M；Hydrophobicity and migration of hydrophobicity: contact angle > 120 °；Breakdown voltage: 28kV/mm；Volume
Resistivity: 1.0 × 1015 ohm centimetres；Flame-retarding characteristic: V0 grades；Silica gel and epoxy plug caking property: 100% cohesional failure.
As an improvement of the above technical solution,
A kind of long-life high reliability solid high-temperature vulcanizes electrically insulating silicone rubber material, is formulated other auxiliary agents and takes four kinds,
It is several to be respectively as follows: methyl-silicone oil, demoulding silicone oil, compounding coupling agent, C-9 mixture.
The present invention has the advantage that the present invention provides a kind of long-life high reliability solid high-temperature sulphur by improving herein
Change electrically insulating silicone rubber material, compared with same type equipment, have the advantages that following improvement and；
Advantage 1: a kind of long-life high reliability solid high-temperature vulcanization electrically insulating silicone rubber material of the present invention, it is accelerated old
Change test, this product under conditions of 300 DEG C, can keep 100 hours it is not brittle and keep elasticity, and the silica gel system of same type
Product complete dusting, it is contemplated that can delay and postpone silicon rubber natural aging time of origin 8 years or more, this greatly improves have
The service life of machine silicon insulator.
Advantage 2: a kind of long-life high reliability solid high-temperature vulcanization electrically insulating silicone rubber material of the present invention is guaranteeing have
The mechanical property for not reducing vulcanizate while the insulating properties and anti-flammability of machine silicon insulator excessively again, reduce silica gel makes outdoors
Used time issuable phenomena such as puncturing, scratch, tearing, by test, the tensile strength of silastic material test piece and tearing are strong
Degree is obviously improved, to realize the anti-aging life-time dilatation of material.
Advantage 3: a kind of long-life high reliability solid high-temperature vulcanization electrically insulating silicone rubber material of the present invention effectively mentions
The dielectric strength of high-sulfurized silica gel is that 22KV/mm is promoted to 28KV/mm from the dielectric strength of the common insulating cement of existing market, has
Effect improve insulator product insulation characterisitic, to realize the anti-aging life-time dilatation of material.
Advantage 4: a kind of long-life high reliability solid high-temperature vulcanization electrically insulating silicone rubber material of the present invention, it is effective to protect
Anti-fouling flashover performance of this silicon rubber under the voltage of 4500V is demonstrate,proved, under the soiling solution environment through 6 hours, as long as Silica Surface 0.5mm
The ablative degradation of left and right, its ablation degree of conventional silastic product are hung to effectively increase insulator in power grid up to 2mm
The timeliness of net work, to realize the anti-aging life-time dilatation of material.
Advantage 5: a kind of long-life high reliability solid high-temperature vulcanization electrically insulating silicone rubber material of the present invention, in balancing machine
In the case where tool performance, the flame-retarding characteristic of material is improved, effectively improves the anti-creep track property of insulator product, guarantees product
The surface integrity and organic trait of product are kept under high voltage arc action, this helps to ensure that the insulating properties of product, thus
Realize the anti-aging life-time dilatation of material.
Advantage 6: a kind of long-life high reliability solid high-temperature vulcanization electrically insulating silicone rubber material of the present invention effectively improves
Every mechanical performance of compression molding silicone rubber products after mixing, to realize the anti-aging life-time dilatation of material.
Advantage 7: a kind of long-life high reliability solid high-temperature vulcanization electrically insulating silicone rubber material of the present invention realizes this hair
Bright silicon rubber is bonded together during compression molding with internal effective 100% ground of epoxy core surface, and can be held
It is tested by long-term acid and alkali-resistance, is not bonded position loosely, guarantee that product is not fallen off in hanging net operation, and effectively avoid steam
Deng entering among silicone rubber sleeve and core, conductive layer is formed, and conventional silicone rubber only reaches 90% level for having cohesional failure, reaches
Less than 100%, to realize the anti-aging life-time dilatation of material.
Advantage 8: a kind of long-life high reliability solid high-temperature vulcanization electrically insulating silicone rubber material of the present invention can effectively disappear
Except the moisture in raw material, while it is more preferable to allow reinforced filling and organosilicon polymer to combine, and effectively improves the insulating properties of product, thus
Realize the anti-aging life-time dilatation of material.
Advantage 9: a kind of long-life high reliability solid high-temperature vulcanization electrically insulating silicone rubber material of the present invention, it can be effective
The large-sized feed particles of reduction be mixed into silastic material, it is effective to improve mechanical performance and electrical property, to realize
The anti-aging life-time dilatation of material.
Detailed description of the invention
Fig. 1 is the comparative structure schematic diagram of inventive formulation content；
Fig. 2 is the comparative structure schematic diagram of production process for milling of the present invention.
Specific embodiment
Below in conjunction with attached drawing 1-2, the present invention is described in detail, and technical solution in the embodiment of the present invention carries out
It clearly and completely describes, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole implementation
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.
Embodiment one
The present invention provides a kind of long-life high reliability solid high-temperature vulcanization electrically insulating silicone rubber material by improving herein, matches
Side is as follows: the raw-silastic continuously takes 70~90 parts, and the boron-silicon rubber raw rubber takes 15~30 parts, and the gas-phase silica takes 20
It is~35 parts, described to take 4~6 parts of hydroxy silicon oil, it is described to take 8~10 parts of organic siliconresin, it is described to take special aluminium hydroxide 115
It is~140 parts, described to take 6~8 parts of iron oxide red, it is described to take 4~5 parts of high-performance anti creepage trace additive, the fire-retardant addition
Agent takes 4~5 parts.
A kind of long-life high reliability solid high-temperature vulcanizes electrically insulating silicone rubber material, is formulated other auxiliary agents and takes four kinds,
It is several to be respectively as follows: methyl-silicone oil, demoulding silicone oil, compounding coupling agent, C-9 mixture.
The present invention provides a kind of long-life high reliability solid high-temperature vulcanization electrically insulating silicone rubber material by improving, to formula
The technical measures of design: it runs as follows；
First, in formula by addition weather resisting agent (cerium oxide) and using boracic silica gel, it is exhausted to effectively increase organosilicon
The natural aging characteristic of edge, accelerated burn-in test, this product under conditions of 300 DEG C, can keep 100 hours it is not brittle simultaneously
Keep elastic, and the complete dusting of the silica gel product of same type, it is contemplated that it can delay and postpone silicon rubber natural aging hair
Raw 8 years time or more, this greatly improves the service lifes of organic silicon insulation；
Second, in formula using specially treated aluminium hydrate powder (common aluminium hydroxide be it is hydrophilic, with silica gel oil
Property characteristic it is corresponding, be not easy dispersion and effectively combine, by containing vinyl silanes high-temperature vacuum processing after, the hydroxyl on surface
Group is substituted by silico ethylene base, generates polarity, to more fasten with the combination of raw rubber, dispersibility is more preferable, this is effectively also improved
The hydrophobic character on vulcanizate surface), do not reduce sulphur excessively again while guaranteeing the insulating properties and anti-flammability of organic silicon insulation
Change the mechanical property of glue, issuable phenomena such as puncturing, scratch, tearing when silica gel uses outdoors is reduced, by test, silicon
The tensile strength and tearing strength of rubber material test piece are obviously improved, to realize the anti-aging life-time dilatation of material；
Third by adding organic siliconresin, and synthesizes at high temperature with raw rubber, the effective dielectric for improving vulcanization silica gel
Intensity is that 22KV/mm is promoted to 28KV/mm from the dielectric strength of the common insulating cement of existing market, effectively improves insulator product
Insulation characterisitic, to realize the anti-aging life-time dilatation of material；
4th, by addition high-performance anti creepage trace additive, (common insulation silica gel improves simply by aluminium hydroxide
Creepage trace characteristic, this product preferably improve the resistance to of silica gel by addition platinum complex compound and aluminium hydroxide synergistic effect
Creepage trace characteristic), effectively guarantee anti-fouling flashover performance of this silicon rubber under the voltage of 4500V, the soiling solution ring through 6 hours
Under border, as long as the ablative degradation of Silica Surface 0.5mm or so, its ablation degree of conventional silastic product is up to 2mm, to have
Effect improves the timeliness that insulator works in power grid linked network, to realize the anti-aging life-time dilatation of material；
5th, by adding special flame-retardant additive, (this additive is a kind of fumed titanium dioxide, and additive amount lacks 1-
2%, environmentally friendly and free from environmental pollution compared with the toxic fire retardants such as conventional halogen, antimony trioxide), in balancing machine performance
In the case of, the flame-retarding characteristic of material is improved, the anti-creep track property of insulator product is effectively improved, guarantees product in high-voltage electricity
The lower surface integrity and organic trait for keeping product of arc effect, this helps to ensure that the insulating properties of product, to realize material
Expect anti-aging life-time dilatation；
The present invention provides a kind of long-life high reliability solid high-temperature and vulcanizes electrically insulating silicone rubber material by improving, to newly matching
The technical measures of square silastic material calendering process: it runs as follows；
First, in compounding procedure, conventional silicone rubber formulations raw material, due to the filler of formula be it is hydrophilic, do not have yet
There is the mechanical strength of material after cannot improving mixing by powder surface treatment measures, and to mixing silicon rubber work of the invention
In sequence, by carrying out surface-active-treatment to raw material (aluminium hydroxide), reacted under the high temperature conditions with vinyl silanes, by hydrogen-oxygen
The surface hydroxyl for changing aluminium reacts away, and is replaced by vinyl silicon group, so that aluminium hydroxide powder is become hydrophobicity and lipophilicity, effectively
The every mechanical performance for improving the compression molding silicone rubber products after being kneaded, to realize the anti-aging life-time dilatation of material；
Second, in compression molding silicon rubber process, novel ground by Shanghai by coating one layer on epoxy core
Study carefully developed trade mark H208 silane coupling agent, realizes the epoxy core table of silicon rubber of the invention during compression molding with inside
Effective 100% ground in face is bonded together, and can bear long-term acid and alkali-resistance test, is not bonded position loosely, is guaranteed product
It is not fallen off in hanging net operation, and steam etc. is effectively avoided to enter among silicone rubber sleeve and core, formation conductive layer, and conventional silicon
Rubber only reaches 90% level for having cohesional failure, is not achieved 100%, to realize the anti-aging life-time dilatation of material；
Third in mixing in mixing process, is arranged by the technique of heat treatment and vacuum processing to raw material in mold
That applies takes, and can effectively eliminate the moisture in raw material, while it is more preferable to allow reinforced filling and organosilicon polymer to combine, and effectively improves
The insulating properties of product, to realize the anti-aging life-time dilatation of material；
4th, it, can by taking thinner strainer (more than 200 mesh) in the silastic material filter progress after mixing
It is mixed into silastic material with effectively reducing large-sized feed particles, it is effective to improve mechanical performance and electrical property, thus
Realize the anti-aging life-time dilatation of material.
The present invention provides a kind of long-life high reliability solid high-temperature vulcanization electrically insulating silicone rubber material by improving, naturally old
Change characteristic: accelerated aging test verifying can delay and postpone natural aging time of origin 8 years or more；Tensile strength: 5-
6MPa；Tearing strength: 16-20kN/M；Hydrophobicity and migration of hydrophobicity: contact angle > 120 °；Breakdown voltage: 28kV/mm；Volume
Resistivity: 1.0 × 1015 ohm centimetres；Flame-retarding characteristic: V0 grades；Silica gel and epoxy plug caking property: 100% cohesional failure.
A kind of long-life high reliability solid high-temperature of the present invention vulcanizes electrically insulating silicone rubber material, and accelerated aging is surveyed
Examination, this product under conditions of 300 DEG C, can keep 100 hours it is not brittle and keep elasticity, and the silica gel product of same type is
Through complete dusting, it is contemplated that can delay and postpone silicon rubber natural aging time of origin 8 years or more, this greatly improves organosilicons
The service life of insulator.
A kind of long-life high reliability solid high-temperature of the present invention vulcanizes electrically insulating silicone rubber material, is guaranteeing that organosilicon is exhausted
The mechanical property for not reducing vulcanizate while the insulating properties and anti-flammability of edge excessively again, reducing can when silica gel uses outdoors
Phenomena such as puncturing, scratch, tearing of energy generation, by test, the tensile strength and tearing strength of silastic material test piece are bright
It is aobvious to be promoted, to realize the anti-aging life-time dilatation of material.
A kind of long-life high reliability solid high-temperature of the present invention vulcanizes electrically insulating silicone rubber material, effective to improve vulcanization
The dielectric strength of silica gel is that 22KV/mm is promoted to 28KV/mm from the dielectric strength of the common insulating cement of existing market, effectively improves
Insulator product insulation characterisitic, to realize the anti-aging life-time dilatation of material.
A kind of long-life high reliability solid high-temperature of the present invention vulcanizes electrically insulating silicone rubber material, effectively guarantees this silicon
Anti-fouling flashover performance of the rubber under the voltage of 4500V, under the soiling solution environment through 6 hours, as long as Silica Surface 0.5mm or so
Ablative degradation, its ablation degree of conventional silastic product work to effectively increase insulator in power grid linked network up to 2mm
Timeliness, to realize the anti-aging life-time dilatation of material.
A kind of long-life high reliability solid high-temperature of the present invention vulcanizes electrically insulating silicone rubber material, in balancing machine performance
In the case where, the flame-retarding characteristic of material is improved, the anti-creep track property of insulator product is effectively improved, guarantees product in high pressure
The surface integrity and organic trait of product are kept under arcing, this helps to ensure that the insulating properties of product, to realize
The anti-aging life-time dilatation of material.
A kind of long-life high reliability solid high-temperature of the present invention vulcanizes electrically insulating silicone rubber material, after effectively improving mixing
Compression molding silicone rubber products every mechanical performance, to realize the anti-aging life-time dilatation of material.
A kind of long-life high reliability solid high-temperature of the present invention vulcanizes electrically insulating silicone rubber material, realizes silicon of the invention
Rubber is bonded together during compression molding with internal effective 100% ground of epoxy core surface, and can be born long-term
Acid and alkali-resistance test, does not bond position loosely, guarantees that product does not fall off in hanging net operation, and effectively avoids steam etc. and enters
Among silicone rubber sleeve and core, conductive layer is formed, and conventional silicone rubber only reaches 90% level for having cohesional failure, is not achieved
100%, to realize the anti-aging life-time dilatation of material.
A kind of long-life high reliability solid high-temperature of the present invention vulcanizes electrically insulating silicone rubber material, can effectively eliminate raw material
In moisture, while it is more preferable to allow reinforced filling and organosilicon polymer to combine, and the insulating properties of product is effectively improved, to realize
The anti-aging life-time dilatation of material.
A kind of long-life high reliability solid high-temperature of the present invention vulcanizes electrically insulating silicone rubber material, can effectively reduce
Large-sized feed particles are mixed into silastic material, effective to improve mechanical performance and electrical property, so that it is anti-to realize material
The extension of aging life-span.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (4)
1. a kind of long-life high reliability solid high-temperature vulcanizes electrically insulating silicone rubber material, be formulated as follows: the raw-silastic continuously is taken
70~90 parts, the boron-silicon rubber raw rubber takes 15~30 parts, and the gas-phase silica takes 20~35 parts, described to take hydroxy silicon oil 4
It is~6 parts, described to take 8~10 parts of organic siliconresin, it is described to take 115~140 parts of special aluminium hydroxide, it is described to take iron oxide red 6
~8 parts, described to take 4~5 parts of high-performance anti creepage trace additive, the flame-retardant additive takes 4~5 parts.
2. a kind of long-life high reliability solid high-temperature vulcanizes electrically insulating silicone rubber material according to claim 1, it is formulated other
Auxiliary agent takes four kinds, and it is several to be respectively as follows: methyl-silicone oil, demoulding silicone oil, compounding coupling agent, C-9 mixture.
3. a kind of long-life high reliability solid high-temperature vulcanizes electrically insulating silicone rubber material according to claim 1, formula is set
The technical measures of meter: it runs as follows；
First, in formula by adding weather resisting agent (cerium oxide) and using boracic silica gel；
Second, the aluminium hydrate powder of specially treated is used in formula；
Third by adding organic siliconresin, and synthesizes at high temperature with raw rubber；
4th, by adding high-performance anti creepage trace additive；
5th, by adding special flame-retardant additive.
4. a kind of long-life high reliability solid high-temperature vulcanizes electrically insulating silicone rubber material according to claim 1, to new formula
The technical measures of silastic material calendering process: it runs as follows；
First, in compounding procedure, conventional silicone rubber formulations raw material, due to the filler of formula be it is hydrophilic, also do not pass through
Powder surface treatment measures are crossed, the mechanical strength of material after being kneaded cannot be improved, and in mixing silicon rubber process of the invention,
By carrying out surface-active-treatment to raw material (aluminium hydroxide), reacted under the high temperature conditions with vinyl silanes, by aluminium hydroxide
Surface hydroxyl react away, be replaced by vinyl silicon group, aluminium hydroxide powder made to become hydrophobicity and lipophilicity；
Second, it is novel by Shanghai research institute by coating one layer on epoxy core in compression molding silicon rubber process
The trade mark H208 silane coupling agent of exploitation realizes that silicon rubber of the invention has during compression molding with internal epoxy core surface
100% ground of effect is bonded together, and can bear long-term acid and alkali-resistance test；
Third in mixing in mixing process, passes through the technological measure of heat treatment and vacuum processing to raw material in mold
It takes.
4th, in the silastic material filter progress after mixing, by taking thinner strainer (more than 200 mesh).
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| CN112932786A (en) * | 2021-02-02 | 2021-06-11 | 陈振林 | Fully-sealed goggles |
| CN115368674A (en) * | 2022-08-30 | 2022-11-22 | 南京大学 | Polyolefin insulation composition and composite insulator using same |
| CN115386233A (en) * | 2022-10-13 | 2022-11-25 | 醴陵华鑫电瓷科技股份有限公司 | Silicone rubber material and preparation method and application thereof |
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| CN1245510A (en) * | 1996-12-31 | 2000-02-23 | 罗狄亚化学公司 | Use of mixtures with base of Pt and of transition metal compounds other than Pt for improving resistance to properties of polyorganosiloxane elastomers to arc |
| CN1923899A (en) * | 2006-02-10 | 2007-03-07 | 南方电网技术研究中心 | High hydrophobic silicon rubber for synthesis insulator and preparation technology thereof |
| CN104479358A (en) * | 2014-12-03 | 2015-04-01 | 东莞日进电线有限公司 | Silicone rubber insulating sizing material, high-temperature and high-pressure resistant silicone rubber wire and preparation process |
| CN106280491A (en) * | 2016-09-12 | 2017-01-04 | 宜昌兴之新塑胶电子科技有限公司 | A kind of high strength heat resistant oxygen aging electrically insulating silicone rubber and preparation method thereof |
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