CN108192353A - A kind of preparation method of insulator heat-resistant silicon rubber - Google Patents
A kind of preparation method of insulator heat-resistant silicon rubber Download PDFInfo
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- CN108192353A CN108192353A CN201711197366.2A CN201711197366A CN108192353A CN 108192353 A CN108192353 A CN 108192353A CN 201711197366 A CN201711197366 A CN 201711197366A CN 108192353 A CN108192353 A CN 108192353A
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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
- C08K2003/2227—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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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Abstract
The invention discloses a kind of preparation methods of insulator heat-resistant silicon rubber, include the following steps：By methyl vinyl silicone rubber, methyl vinyl phenyl silicon rubber, sepiolite powder, alumina compound, constitution controller stirring, temperature is adjusted, vacuum stands to obtain rubber compound；Rubber compound is heated up, is stood, adds in tert-butyl hydroperoxide, Bao Tong, heating is once vulcanized, and heating carries out post-cure and obtains insulator heat-resistant silicon rubber.Alumina compound is prepared using following technique：Alumina particle, mono methoxy polyethylene glycol, dichloromethane, hydroxy propyl methacrylate, ethylene oxide, hydrochloric acid, polymerization inhibitor are mixed, the lower heating stirring of nitrogen protection is stood, cooling, washing obtains alumina compound.Gained silicon rubber of the invention has very good mechanical properties and electric property, and with excellent UV resistant and acid etch resistance energy, while heat resistance is good, and thermal conductivity factor is up to 6.2W/ (mK).
Description
Technical field
The present invention relates to silicon rubber technical field more particularly to a kind of preparation methods of insulator heat-resistant silicon rubber.
Background technology
Insulator is the parts that dosage is huge in power grid, and quality good or not decides the safe and reliable of operation of power networks.With
The rise and development of material technology, insulation subcategory also obtains prosperity.By material difference, insulator is divided into porcelain insulator, glass
Glass insulator, composite insulator and hybrid insulator.Silicon rubber is because with excellent heat resistance, cold resistance, dielectricity, resistance to smelly
Oxygen, hydrophobicity and resistance to atmospheric aging are widely used on insulator, make outer insulating material.It is industrialized with world economy, it is right
The high-temperature capability of the insulator of highlands proposes higher requirement.
Invention content
Technical problems based on background technology, the present invention propose a kind of preparation side of insulator heat-resistant silicon rubber
Method, gained silicon rubber not only fully meet requirements of the national standard, have very good mechanical properties and electric property, and with excellent
UV resistant and acid etch resistance energy, while heat resistance is good, and thermal conductivity factor is up to 6.2W/ (mK).
A kind of preparation method of insulator heat-resistant silicon rubber proposed by the present invention, includes the following steps：
S1, by methyl vinyl silicone rubber, methyl vinyl phenyl silicon rubber, sepiolite powder, alumina compound, structure
Controlling agent stirs, and adjusts temperature, and vacuum stands to obtain rubber compound；
S2, rubber compound is heated up, stand, add in tert-butyl hydroperoxide, Bao Tong, heating once vulcanized, heat up into
Row post-cure obtains insulator heat-resistant silicon rubber.
Preferably, in S1,160-175 DEG C is adjusted the temperature to, vacuum stands 20-30min, vacuum degree 0.04-
0.08kPa。
Preferably, in S1, methyl vinyl silicone rubber, methyl vinyl phenyl silicon rubber, sepiolite powder, alumina composite
Object, constitution controller weight ratio be 50-80：5-15：40-80：15-25：1-4.
Preferably, in S1, alumina compound is prepared using following technique：By alumina particle, the poly- second two of mono methoxy
Alcohol, dichloromethane stirring add in hydroxy propyl methacrylate, ethylene oxide continues to stir, addition hydrochloric acid, polymerization inhibitor mixing, nitrogen
Heat up stirring under gas shielded, stands, and cooling, washing obtains alumina compound.
Preferably, in the preparation process of the alumina compound of S1,80-90 DEG C of stirring 2-6h is warming up under nitrogen protection,
Stand 2-4h.
Preferably, in the preparation process of the alumina compound of S1, alumina particle, mono methoxy polyethylene glycol, dichloro
Methane, hydroxy propyl methacrylate, ethylene oxide, hydrochloric acid, polymerization inhibitor weight ratio be 20-30：1-2：60-100：4-12：
0.5-1：1-2：1-2, a concentration of 1-2mol/L of hydrochloric acid.
Preferably, in S2, rubber compound is warming up to 40-50 DEG C, stands 30-50h, adds in tert-butyl hydroperoxide, Bao Tong
It 2-5 times, is warming up to 155-165 DEG C and carries out primary vulcanization 20-40min, be warming up to 176-182 DEG C of progress post-cure 2-6min,
Obtain insulator heat-resistant silicon rubber.
Preferably, in S2, the weight ratio of rubber compound and tert-butyl hydroperoxide is 100-120：2-4.
Gained silicon rubber of the invention not only fully meets requirements of the national standard, has very good mechanical properties and electric property,
And with excellent UV resistant and acid etch resistance energy, material is intact after ultraviolet light (xenon arc method) aging 1500h, is immersed in
Material is intact after 45min in the salpeter solution of 65wt%, while heat conduction intensity is high, and thermal conductivity factor is up to 6.2W/ (mK).
In the alumina compound of the present invention, alumina particle is dispersed in dichloro under the cooperation of mono methoxy polyethylene glycol
In methane, cooperation adds in hydroxy propyl methacrylate, ethylene oxide reacts under certain condition, and product can be coated on aluminium oxide granule
Grain surface, surface-active is high and has both double bond, carbonyl and diether linkage structure, and lubricating action is good, and good spreadability and emulsification
Property；The rubber matrix that alumina compound can be formed with methyl vinyl silicone rubber, methyl vinyl phenyl silicon rubber compounds,
Disperse combination degree height under certain condition each other, by rationally controlling the grain size of alumina particle in a certain range, and can
Uniform heat conduction network chain is formed in rubber matrix, and forms smooth passage of heat, significantly improves silicon rubber obtained by the present invention
Heat conductivility, high-temperature capability is high, and thermal conductivity factor is up to 6.2W/ (mK)；Alumina compound is compounded with sepiolite powder, and
Rationally control proportioning, filling effect is good, can reduce the addition of methyl vinyl silicone rubber, methyl vinyl phenyl silicon rubber indirectly
Amount, effectively reduces cost input, convenient for industrial application.
Specific embodiment
In the following, technical scheme of the present invention is described in detail by specific embodiment.
Embodiment 1
A kind of preparation method of insulator heat-resistant silicon rubber, includes the following steps：
S1,50g methyl vinyl silicone rubbers, 15g methyl vinyl phenyls silicon rubber, 40g sepiolite powders, 25g are aoxidized
Aluminium compound, 1g constitution controllers stirring 15min, adjust the temperature to 160 DEG C, and vacuum stands 30min, vacuum degree 0.04kPa,
Obtain rubber compound；
Alumina compound is prepared using following technique：By 30g alumina particles, 1g mono methoxy polyethylene glycols, 100g
Dichloromethane mixes, and adds in 4g hydroxy propyl methacrylates, 1g ethylene oxide continues to stir 5min, mixing speed 1600r/
Min adds in a concentration of 2mol/L hydrochloric acid of 1g, 1g polymerization inhibitors feeding sealing reaction kettle, 90 DEG C of stirring 2h is warming up under nitrogen protection,
4h, cooling are stood, washing obtains alumina compound；
S2,100g rubber compounds are warming up to 50 DEG C, stand 30h, add in 4g tert-butyl hydroperoxide, it is thin 2 times logical, it is warming up to
165 DEG C carry out primary vulcanization 20min, are warming up to 182 DEG C of progress post-cure 2min, obtain insulator heat-resistant silicon rubber.
Embodiment 2
A kind of preparation method of insulator heat-resistant silicon rubber, includes the following steps：
S1, by 80g methyl vinyl silicone rubbers, 5g methyl vinyl phenyls silicon rubber, 80g sepiolite powders, 15g aluminium oxide
Compound, 4g constitution controllers stirring 5min, adjust the temperature to 175 DEG C, vacuum stands 20min, and vacuum degree 0.08kPa is obtained
To rubber compound；
Alumina compound is prepared using following technique：By 20g alumina particles, 2g mono methoxy polyethylene glycols, 60g bis-
Chloromethanes mixes, and adds in 12g hydroxy propyl methacrylates, 0.5g ethylene oxide continues to stir 15min, mixing speed 1400r/
Min adds in a concentration of 1mol/L hydrochloric acid of 2g, 2g polymerization inhibitors feeding sealing reaction kettle, 80 DEG C of stirring 6h is warming up under nitrogen protection,
2h, cooling are stood, washing obtains alumina compound；
S2,120g rubber compounds are warming up to 40 DEG C, stand 50h, add in 2g tert-butyl hydroperoxide, it is thin 5 times logical, it is warming up to
155 DEG C carry out primary vulcanization 40min, are warming up to 176 DEG C of progress post-cure 6min, obtain insulator heat-resistant silicon rubber.
Embodiment 3
A kind of preparation method of insulator heat-resistant silicon rubber, includes the following steps：
S1,60g methyl vinyl silicone rubbers, 12g methyl vinyl phenyls silicon rubber, 55g sepiolite powders, 22g are aoxidized
Aluminium compound, 2g constitution controllers stirring 12min, adjust the temperature to 165 DEG C, and vacuum stands 28min, vacuum degree 0.05kPa,
Obtain rubber compound；
Alumina compound is prepared using following technique：By 28g alumina particles, 1.2g mono methoxy polyethylene glycols, 90g
Dichloromethane mixes, and adds in 6g hydroxy propyl methacrylates, 0.8g ethylene oxide continues to stir 8min, mixing speed 1550r/
Min adds in a concentration of 1.7mol/L hydrochloric acid of 1.2g, 1.2g polymerization inhibitors feeding sealing reaction kettle, 88 DEG C is warming up under nitrogen protection
3h is stirred, stands 3.5h, cooling, washing obtains alumina compound；
S2,105g rubber compounds are warming up to 48 DEG C, stand 35h, add in 3.5g tert-butyl hydroperoxide, thin 3 times logical, heating
Primary vulcanization 25min is carried out to 162 DEG C, 180 DEG C of progress post-cure 3min is warming up to, obtains insulator heat-resistant silicon rubber.
Embodiment 4
A kind of preparation method of insulator heat-resistant silicon rubber, includes the following steps：
S1, by 70g methyl vinyl silicone rubbers, 8g methyl vinyl phenyls silicon rubber, 65g sepiolite powders, 18g aluminium oxide
Compound, 3g constitution controllers stirring 8min, adjust the temperature to 170 DEG C, vacuum stands 22min, and vacuum degree 0.07kPa is obtained
To rubber compound；
Alumina compound is prepared using following technique：By 22g alumina particles, 1.8g mono methoxy polyethylene glycols, 70g
Dichloromethane mixes, and addition 10g hydroxy propyl methacrylates, 0.6g ethylene oxide continue to stir 12min, and mixing speed is
1450r/min adds in a concentration of 1.3mol/L hydrochloric acid of 1.8g, 1.8g polymerization inhibitors feeding sealing reaction kettle, and nitrogen protection is lower to heat up
To 82 DEG C of stirring 5h, 2.5h, cooling are stood, washing obtains alumina compound；
S2,115g rubber compounds are warming up to 42 DEG C, stand 45h, add in 2.5g tert-butyl hydroperoxide, thin 4 times logical, heating
Primary vulcanization 35min is carried out to 158 DEG C, 178 DEG C of progress post-cure 5min is warming up to, obtains insulator heat-resistant silicon rubber.
4 gained insulator of embodiment is tested for the property with heat-resistant silicon rubber, test result is as follows：
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (8)
1. a kind of preparation method of insulator heat-resistant silicon rubber, which is characterized in that include the following steps：
S1, by methyl vinyl silicone rubber, methyl vinyl phenyl silicon rubber, sepiolite powder, alumina compound, structure control
Agent is stirred, and adjusts temperature, and vacuum stands to obtain rubber compound；
S2, rubber compound is heated up, stood, add in tert-butyl hydroperoxide, Bao Tong, heating is once vulcanized, and heating carries out two
Secondary vulcanization obtains insulator heat-resistant silicon rubber.
2. the preparation method of insulator heat-resistant silicon rubber according to claim 1, which is characterized in that in S1, adjust temperature
To 160-175 DEG C, vacuum stands 20-30min, vacuum degree 0.04-0.08kPa.
3. the preparation method of insulator heat-resistant silicon rubber according to claim 1 or claim 2, which is characterized in that in S1, methyl second
Alkenyl silicon rubber, methyl vinyl phenyl silicon rubber, sepiolite powder, alumina compound, constitution controller weight ratio be 50-
80：5-15：40-80：15-25：1-4.
4. according to the preparation method of any one of the claim 1-3 insulator heat-resistant silicon rubbers, which is characterized in that in S1,
Alumina compound is prepared using following technique：By alumina particle, mono methoxy polyethylene glycol, dichloromethane stirring, add in
Hydroxy propyl methacrylate, ethylene oxide continue to stir, and add in hydrochloric acid, polymerization inhibitor mixing, and the lower heating stirring of nitrogen protection is quiet
It puts, cools down, washing obtains alumina compound.
5. according to the preparation method of any one of the claim 1-4 insulator heat-resistant silicon rubbers, which is characterized in that the oxygen of S1
In the preparation process for changing aluminium compound, 80-90 DEG C of stirring 2-6h is warming up under nitrogen protection, stands 2-4h.
6. according to the preparation method of any one of the claim 1-5 insulator heat-resistant silicon rubbers, which is characterized in that the oxygen of S1
Change aluminium compound preparation process in, alumina particle, mono methoxy polyethylene glycol, dichloromethane, hydroxy propyl methacrylate,
Ethylene oxide, hydrochloric acid, polymerization inhibitor weight ratio be 20-30：1-2：60-100：4-12：0.5-1：1-2：1-2, the concentration of hydrochloric acid
For 1-2mol/L.
7. according to the preparation method of any one of the claim 1-6 insulator heat-resistant silicon rubbers, which is characterized in that in S2,
Rubber compound is warming up to 40-50 DEG C, stands 30-50h, adds in tert-butyl hydroperoxide, it is thin 2-5 times logical, it is warming up to 155-165 DEG C
Primary vulcanization 20-40min is carried out, 176-182 DEG C of progress post-cure 2-6min is warming up to, obtains insulator with heat-resisting silicon rubber
Glue.
8. according to the preparation method of any one of the claim 1-7 insulator heat-resistant silicon rubbers, which is characterized in that in S2,
The weight ratio of rubber compound and tert-butyl hydroperoxide is 100-120：2-4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711197366.2A CN108192353A (en) | 2017-11-25 | 2017-11-25 | A kind of preparation method of insulator heat-resistant silicon rubber |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711197366.2A CN108192353A (en) | 2017-11-25 | 2017-11-25 | A kind of preparation method of insulator heat-resistant silicon rubber |
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| CN108192353A true CN108192353A (en) | 2018-06-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110358308A (en) * | 2019-08-17 | 2019-10-22 | 苏州汇美包装制品有限公司 | Thermal conductive silicon rubber mat and its manufacturing process |
| CN110845224A (en) * | 2019-12-10 | 2020-02-28 | 江西高鑫电瓷电器有限公司 | High-strength anti-aging porcelain insulator and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101066552A (en) * | 2007-06-11 | 2007-11-07 | 浙江新光饰品有限公司 | Silica gel mold material for casting metal ornament and its application |
| CN104232260A (en) * | 2014-08-22 | 2014-12-24 | 青岛特瑞信电子科技有限公司 | Lubricant for metal processing |
| CN104497583A (en) * | 2014-12-17 | 2015-04-08 | 苏州锦腾电子科技有限公司 | Silicone rubber with high thermal conductivity and high wear-resisting property and preparation method of silicone rubber |
-
2017
- 2017-11-25 CN CN201711197366.2A patent/CN108192353A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101066552A (en) * | 2007-06-11 | 2007-11-07 | 浙江新光饰品有限公司 | Silica gel mold material for casting metal ornament and its application |
| CN104232260A (en) * | 2014-08-22 | 2014-12-24 | 青岛特瑞信电子科技有限公司 | Lubricant for metal processing |
| CN104497583A (en) * | 2014-12-17 | 2015-04-08 | 苏州锦腾电子科技有限公司 | Silicone rubber with high thermal conductivity and high wear-resisting property and preparation method of silicone rubber |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110358308A (en) * | 2019-08-17 | 2019-10-22 | 苏州汇美包装制品有限公司 | Thermal conductive silicon rubber mat and its manufacturing process |
| CN110845224A (en) * | 2019-12-10 | 2020-02-28 | 江西高鑫电瓷电器有限公司 | High-strength anti-aging porcelain insulator and preparation method thereof |
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Application publication date: 20180622 |