CN109370229A - A kind of ultra-high-voltage post composite insulator rubber compound and preparation method thereof - Google Patents
A kind of ultra-high-voltage post composite insulator rubber compound and preparation method thereof 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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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
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- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
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- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C—CHEMISTRY; METALLURGY
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- C08L2205/00—Polymer mixtures characterised by other features
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- 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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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The present invention relates to a kind of ultra-high-voltage post composite insulator rubber compounds and preparation method thereof.Present invention aims at by designing a kind of completely new silicone rubber shed housing material and preparation method, the process difficulties such as the easy incipient scorch of sizing material in the process of injection molding of ultra-high-voltage post composite insulator, bubble, starved, difficult, the full skirt tearing of demoulding are solved, and guarantee that the physical mechanical property after rubber vulcanization, electric property meet the requirement of relevant criterion.
Description
Technical field
The present invention relates to a kind of preparation of high-temperature silicon disulfide rubber material, in particular to a kind of ultra-high-voltage post compound inslation
Sub- external insulation umbrella applies rubber compound formula and preparation method thereof, belongs to rubber material manufacturing field.
Background technique
The sizing material prepared based on methyl vinyl silicone rubber have good physical electric performance, ageing-resistant performance,
Hydrophobic and migration of hydrophobicity, processing performance, as outer insulating material on the forms composite insulator such as suspension type, pillar, cross arm type
It has used for many years, the formula of composite insulator umbrella cover material has the characteristics that short focus, fast cure more at present, to improve production
Efficiency reduces production cost.Ultra-high-voltage post composite insulator is the new structure that fast development in nearly 2 years is got up, and core is straight
Diameter reaches 280mm, 315mm, much higher than the core diameter of extra-high voltage suspended compound insulator maximum 60mm, full skirt maximum gauge
Reach 493mm, about the 3 of suspension type product times, full skirt and mould contact surface product are about 5 times of suspension type product, and single hop product is most
Big injecting glue amount reaches 26850cc, about the 6 of extra-high voltage suspended compound insulator times.Under the requirement of this manufacturing parameter, such as using special
High voltage suspended composite insulator umbrella cover material prescription, it may appear that the techniques such as incipient scorch, bubble, starved, difficult, the full skirt tearing of demoulding are difficult
The exploitation of topic, this project has very strong realistic meaning for the mass production and application of ultra-high-voltage post composite insulator.
Summary of the invention
Present invention aims at by designing a kind of completely new silicone rubber shed housing material and preparation method, solve special
The works such as the easy incipient scorch of sizing material, bubble, starved, difficult, the full skirt tearing of demoulding in the process of injection molding of high-voltage strut composite insulator
Skill problem, and guarantee that the physical mechanical property after rubber vulcanization, electric property meet the requirement of relevant criterion.
The present invention is realized by the technological means such as formula design, preparation process design, performance verification.
The parts by weight of the raw material composition of hard charcoal black glue of the present invention are as follows:
120-150 parts of the raw rubber of contents of ethylene 0.08%；
40-70 parts of the fume colloidal silica of specific surface area 200；
10-13 parts of the hydroxy silicon oil of 8.5% or more hydroxy radical content；
0.4-0.7 parts of stearic acid；
0.5-0.8 parts of vinyltrimethoxysilane；
0.5-0.8 parts of boric acid.
The preparation method of hard charcoal black glue the following steps are included:
A. the raw rubber that contents of ethylene 0.08% is put into vacuum kneader is uniformly sprinkled into boric acid, stearic acid, puts into for the first time
White carbon black is uniformly sprinkled into hydroxy silicon oil on white carbon black surface for the first time, is uniformly sprinkled into the ethylene of whole deals on white carbon black surface
Base trimethoxy silane；
B. second of investment white carbon black, is uniformly sprinkled into hydroxy silicon oil on white carbon black surface for the second time after sizing material is agglomerating；
C. third time investment white carbon black, is uniformly sprinkled into hydroxy silicon oil on white carbon black surface for the third time after sizing material is agglomerating；
D. the 4th investment white carbon black after sizing material is agglomerating, is uniformly sprinkled into hydroxy silicon oil on white carbon black surface the 4th time；
E. it is warming up to sizing material after sizing material is agglomerating and reaches 155 ± 5 DEG C, is heat-treated 60min, discharges, parks 24 hours or more, obtain white
Charcoal black glue.
The weight of the raw material composition of aluminium powder glue of the present invention is divided into:
80-110 parts of the raw rubber of contents of ethylene 0.16%；
70-110 parts of 1-2 μm of median of aluminium hydroxide；
70-110 parts of 3-6 μm of median of aluminium hydroxide；
1-4 parts of indirect process zinc oxide；
0.4-0.7 parts of stearic acid；
0.5-0.8 parts of vinyltrimethoxysilane.
The preparation method of aluminium powder glue the following steps are included:
A. the raw rubber that contents of ethylene 0.16% is put into vacuum kneader is uniformly sprinkled into zinc oxide, stearic acid, throws for the first time
Enter aluminium powder, is uniformly sprinkled into vinyltrimethoxysilane on aluminium powder surface for the first time；
B. second of investment aluminium powder, is uniformly sprinkled into vinyltrimethoxysilane on aluminium powder surface for the second time after sizing material is agglomerating；
C. third time investment aluminium powder, is uniformly sprinkled into vinyltrimethoxysilane on aluminium powder surface for the third time after sizing material is agglomerating；
D. the 4th investment aluminium powder after sizing material is agglomerating；
E. it is warming up to sizing material after sizing material is agglomerating and reaches 140 DEG C, is heat-treated 30min, discharges, parks 24 hours or more, obtain aluminium powder
Glue.
The present invention mixes the parts by weight of the raw material composition of kneading glue are as follows:
80-90 parts of hard charcoal black glue；
170-180 parts of aluminium powder glue；
5-7 parts of 3-6 μm of median of aluminium hydroxide；
15-17 parts of the fume colloidal silica of specific surface area 200；
0.5-0.7 parts of zinc stearate；
0.7-0.8 parts of polytetrafluoroethylene (PTFE)；
0.1-0.3 parts of vinyltrimethoxysilane；
0.8-1.0 parts of color masterbatch.
The preparation method of epoxy glue the following steps are included:
A. hard charcoal black glue, aluminium powder glue investment kneader are weighed in proportion, and investment zinc stearate, gathers vinyltrimethoxysilane
Tetrafluoroethene solution, stirs evenly；
B. hydrogen-oxygen aluminium powder is put into after sizing material is agglomerating, color masterbatch puts into white carbon black for the first time；
C. second of investment white carbon black after sizing material is agglomerating；
D. third time investment white carbon black after sizing material is agglomerating；
E. it is warming up to sizing material after sizing material is agglomerating and reaches 140 DEG C, is heat-treated 45min, discharges, parks 24 hours or more, be kneaded
Glue.
The rubber compound for reaching storage period requirement is weighed, bis 25 vulcanizing agent is added in proportion on a mill, passes through 4-5
Secondary 90 degree of tunings calendering, 2 times thin logical calendering park 24 hours or more, are made and add sulphur rubber compound.
Be up to storage period requirement adds sulphur rubber compound to be put into plate vulcanization machine die, is arranged 180 DEG C of temperature, 2mm is thick
Test piece vulcanization time 7min, 6min thickness test piece vulcanization time 10min are spent, experimental test test piece is made, according to correlation test
The requirement of standard is made standard sample with cut-off knife and is tested for the property.
It is made and adds sulphur rubber compound 500kg, reagent φ 315mm solid post composite insulator, full skirt maximum gauge
493mm, test sizing material produce and process performance.
Effect of the invention: material property meets the required value of DL/T 376-2010 standard, and it is compound to meet extra-high voltage suspension type
Insulator umbrella cover material performance requirement, the sizing material incipient scorch phase is long, and ratio of briquetting, release property are excellent, and it is multiple to meet the solid pillar body of φ 315mm
Close insulator injection molding manufacturing technique requirent.
Specific embodiment
Concrete mode of the invention is described further below by way of specific embodiment.
Embodiment 1:
A kind of ultra-high-voltage post composite insulator mixing glue formula and preparation method thereof, preparation method is as follows: pinching in vacuum
The methyl vinyl silicone rubber that 120 parts of contents of ethylene of investment are 0.08% in conjunction machine, puts into 0.4 part of stearic acid, 0.5 part of boric acid,
0.5 part of vinyltrimethoxysilane, 40 parts of white carbon blacks point, 4 investments, 10 parts of hydroxy silicon oils point, 4 investments, every time new charging
Preceding material must be agglomerating.It is warming up to sizing material after final addition is agglomerating and reaches 155 ± 5 DEG C, is heat-treated 60min, discharges, to park 24 small
When more than, obtain hard charcoal black glue；The methyl ethylene silicon rubber that 80 parts of contents of ethylene are 0.16% is put into vacuum kneader
Glue puts into 2 parts of zinc oxide, 0.4 part of stearic acid, 0.5 part of vinyltrimethoxysilane, 70 parts 1-2 μm of median of hydrogen-oxygen
Change 4 investments of aluminium and 70 parts 3-6 μm of median of aluminium hydroxide point, material must be agglomerating before newly feeding every time.Final addition
It is warming up to sizing material after agglomerating and reaches 140 DEG C, is heat-treated 30min, discharges, parks 24 hours or more, obtain aluminium powder glue；Claim in proportion
80 parts of hard charcoal black glue of amount, 180 parts of investment kneaders of aluminium powder glue put into 0.6 part of zinc stearate, 0.2 part of vinyl trimethoxy silicon
Alkane, 0.75 part of polytetrafluoroethylsolution solution, stir evenly, the aluminium hydroxide of agglomerating rear 5.5 parts 3-6 μm of median of the investment of sizing material,
0.85 part of color masterbatch, 15 parts of white carbon blacks point, 3 investments, material must be agglomerating before new charging every time, heating after final addition is agglomerating
Reach 140 DEG C to sizing material, is heat-treated 45min, discharges, park 24 hours or more, obtain rubber compound.
Weighing 25 parts of rubber compounds and adding content on a mill is 0.2 part of bis 25 vulcanizing agent of 70%, is passed through 4-5 times 90
Tuning calendering is spent, 2 times thin logical calendering is parked 24 hours or more, is made and is added sulphur rubber compound 1.
Embodiment 2:
A kind of ultra-high-voltage post composite insulator mixing glue formula and preparation method thereof, preparation method is as follows: pinching in vacuum
The methyl vinyl silicone rubber that 130 parts of contents of ethylene of investment are 0.08% in conjunction machine, puts into 0.5 part of stearic acid, 0.6 part of boric acid,
0.6 part of vinyltrimethoxysilane, 50 parts of white carbon blacks point, 4 investments, 11 parts of hydroxy silicon oils point, 4 investments, every time new charging
Preceding material must be agglomerating.It is warming up to sizing material after final addition is agglomerating and reaches 155 ± 5 DEG C, is heat-treated 60min, discharges, to park 24 small
When more than, obtain hard charcoal black glue；The methyl ethylene silicon rubber that 90 parts of contents of ethylene are 0.16% is put into vacuum kneader
Glue puts into 4 parts of zinc oxide, 0.5 part of stearic acid, 0.6 part of vinyltrimethoxysilane, 110 parts 1-2 μm of median of hydrogen-oxygen
Change 4 investments of aluminium and 110 parts 3-6 μm of median of aluminium hydroxide point, material must be agglomerating before newly feeding every time.Final addition
It is warming up to sizing material after agglomerating and reaches 140 DEG C, is heat-treated 30min, discharges, parks 24 hours or more, obtain aluminium powder glue；Claim in proportion
80 parts of hard charcoal black glue of amount, 180 parts of investment kneaders of aluminium powder glue put into 0.6 part of zinc stearate, 0.2 part of vinyl trimethoxy silicon
Alkane, 0.75 part of polytetrafluoroethylsolution solution, stir evenly, the aluminium hydroxide of agglomerating rear 5.5 parts 3-6 μm of median of the investment of sizing material,
0.85 part of color masterbatch, 15 parts of white carbon blacks point, 3 investments, material must be agglomerating before new charging every time, heating after final addition is agglomerating
Reach 140 DEG C to sizing material, is heat-treated 45min, discharges, park 24 hours or more, obtain rubber compound.
Weighing 25 parts of rubber compounds and adding content on a mill is 0.2 part of bis 25 vulcanizing agent of 70%, is passed through 4-5 times 90
Tuning calendering is spent, 2 times thin logical calendering is parked 24 hours or more, is made and is added sulphur rubber compound 2.
Embodiment 3:
A kind of ultra-high-voltage post composite insulator mixing glue formula and preparation method thereof, preparation method is as follows: pinching in vacuum
The methyl vinyl silicone rubber that 140 parts of contents of ethylene of investment are 0.08% in conjunction machine, puts into 0.6 part of stearic acid, 0.7 part of boric acid,
0.7 part of vinyltrimethoxysilane, 60 parts of white carbon blacks point, 4 investments, 10 parts of hydroxy silicon oils point, 4 investments, every time new charging
Preceding material must be agglomerating.It is warming up to sizing material after final addition is agglomerating and reaches 155 ± 5 DEG C, is heat-treated 60min, discharges, to park 24 small
When more than, obtain hard charcoal black glue；The methyl ethylene silicon rubber that 100 parts of contents of ethylene are 0.16% is put into vacuum kneader
Glue puts into 6 parts of zinc oxide, 0.6 part of stearic acid, 0.7 part of vinyltrimethoxysilane, 110 parts 1-2 μm of median of hydrogen-oxygen
Change 4 investments of aluminium and 110 parts 3-6 μm of median of aluminium hydroxide point, material must be agglomerating before newly feeding every time.Final addition
It is warming up to sizing material after agglomerating and reaches 140 DEG C, is heat-treated 30min, discharges, parks 24 hours or more, obtain aluminium powder glue；Claim in proportion
80 parts of hard charcoal black glue of amount, 180 parts of investment kneaders of aluminium powder glue put into 0.6 part of zinc stearate, 0.2 part of vinyl trimethoxy silicon
Alkane, 0.75 part of polytetrafluoroethylsolution solution, stir evenly, the aluminium hydroxide of agglomerating rear 5.5 parts 3-6 μm of median of the investment of sizing material,
0.85 part of color masterbatch, 15 parts of white carbon blacks point, 3 investments, material must be agglomerating before new charging every time, heating after final addition is agglomerating
Reach 140 DEG C to sizing material, is heat-treated 45min, discharges, park 24 hours or more, obtain rubber compound.
Weighing 25 parts of rubber compounds and adding content on a mill is 0.2 part of bis 25 vulcanizing agent of 70%, is passed through 4-5 times 90
Tuning calendering is spent, 2 times thin logical calendering is parked 24 hours or more, is made and is added sulphur rubber compound 3.
Embodiment 4:
A kind of ultra-high-voltage post composite insulator mixing glue formula and preparation method thereof, preparation method is as follows: pinching in vacuum
The methyl vinyl silicone rubber that 150 parts of contents of ethylene of investment are 0.08% in conjunction machine, puts into 0.7 part of stearic acid, 0.8 part of boric acid,
0.8 part of vinyltrimethoxysilane, 70 parts of white carbon blacks point, 4 investments, 13 parts of hydroxy silicon oils point, 4 investments, every time new charging
Preceding material must be agglomerating.It is warming up to sizing material after final addition is agglomerating and reaches 155 ± 5 DEG C, is heat-treated 60min, discharges, to park 24 small
When more than, obtain hard charcoal black glue；The methyl ethylene silicon rubber that 110 parts of contents of ethylene are 0.16% is put into vacuum kneader
Glue puts into 4 parts of zinc oxide, 0.7 part of stearic acid, 0.8 part of vinyltrimethoxysilane, 110 parts 1-2 μm of median of hydrogen-oxygen
Change 4 investments of aluminium and 110 parts 3-6 μm of median of aluminium hydroxide point, material must be agglomerating before newly feeding every time.Final addition
It is warming up to sizing material after agglomerating and reaches 140 DEG C, is heat-treated 30min, discharges, parks 24 hours or more, obtain aluminium powder glue；Claim in proportion
80 parts of hard charcoal black glue of amount, 180 parts of investment kneaders of aluminium powder glue put into 0.6 part of zinc stearate, 0.2 part of vinyl trimethoxy silicon
Alkane, 0.75 part of polytetrafluoroethylsolution solution, stir evenly, the aluminium hydroxide of agglomerating rear 5.5 parts 3-6 μm of median of the investment of sizing material,
0.85 part of color masterbatch, 15 parts of white carbon blacks point, 3 investments, material must be agglomerating before new charging every time, heating after final addition is agglomerating
Reach 140 DEG C to sizing material, is heat-treated 45min, discharges, park 24 hours or more, obtain rubber compound.
Weighing 25 parts of rubber compounds and adding content on a mill is 0.2 part of bis 25 vulcanizing agent of 70%, is passed through 4-5 times 90
Tuning calendering is spent, 2 times thin logical calendering is parked 24 hours or more, is made and is added sulphur rubber compound 4.
For rubber compound prepared by the present invention under 180 DEG C of conditions of vulcanizations, test piece molding equipment is vulcanizing press, setting
Experimental test test piece is made, according to correlation in 2mm thickness test piece vulcanization time 7min, 6mm thickness test piece vulcanization time 10min
The requirement of testing standard is made standard sample with cut-off knife and is tested, and the embodiment for meeting test piece requirement for performance is manufactured experimently
500kg tests processing performance using 880 tons of silicon rubber full-automatic injecting molding machines, and specific test result is shown in Table 1:
The ultra-high-voltage post composite insulator produced by the present invention of table 1 umbrella cover material properties test result
Description of the present invention in the claims book and specification and application be it is illustrative, protected range is not limited by
The invention patent embodiment 1, embodiment 2, embodiment 3, components by weight percent formula and preparation method described in embodiment 4, are also answered
This includes mass percent formula corresponding with embodiment, percentage by volume formula, factory formula and preparation method thereof, Yi Jiren
The technical solution what is obtained using equivalence replacement is within the scope of the invention patent is protected.
Claims (6)
1. a kind of ultra-high-voltage post composite insulator rubber compound, which is characterized in that the parts by weight of its raw material composition are as follows:
80-90 parts of hard charcoal black glue；
170-180 parts of aluminium powder glue；
5-7 parts of 3-6 μm of median of aluminium hydroxide；
15-17 parts of the fume colloidal silica of specific surface area 200；
0.5-0.7 parts of zinc stearate；
0.7-0.8 parts of polytetrafluoroethylene (PTFE)；
0.1-0.3 parts of vinyltrimethoxysilane；
0.8-1.0 parts of color masterbatch.
2. a kind of ultra-high-voltage post composite insulator rubber compound according to claim 1, which is characterized in that its mixing is pinched
The parts by weight of hard charcoal black glue Central Plains material composition before refining are as follows:
120-150 parts of the raw rubber of contents of ethylene 0.08%；
40-70 parts of the fume colloidal silica of specific surface area 200；
10-13 parts of the hydroxy silicon oil of 8.5% or more hydroxy radical content；
0.4-0.7 parts of stearic acid；
0.5-0.8 parts of vinyltrimethoxysilane；
0.5-0.8 parts of boric acid.
3. a kind of ultra-high-voltage post composite insulator rubber compound according to claim 1, which is characterized in that its mixing is pinched
The parts by weight that raw material forms in aluminium powder glue before refining are as follows:
80-110 parts of the raw rubber of contents of ethylene 0.16%；
70-110 parts of 1-2 μm of median of aluminium hydroxide；
70-110 parts of 3-6 μm of median of aluminium hydroxide；
1-4 parts of indirect process zinc oxide；
0.4-0.7 parts of stearic acid；
0.5-0.8 parts of vinyltrimethoxysilane.
4. a kind of preparation method of ultra-high-voltage post composite insulator rubber compound according to claim 1, feature exist
In the preparation process of hard charcoal black glue is as follows:
The raw rubber that contents of ethylene 0.08% is first put into vacuum kneader, is uniformly sprinkled into boric acid, stearic acid, gas-phase silica
It point puts into several times, hydroxy silicon oil point is uniformly sprinkling upon the white carbon black surface of investment several times, and vinyltrimethoxysilane is the
It is uniformly sprinkling upon its surface when primary investment white carbon black, sizing material must stir agglomerating, heat treatment 50- before putting into white carbon black every time
80min, discharging are parked more than for 24 hours.
5. a kind of preparation method of ultra-high-voltage post composite insulator rubber compound according to claim 1, feature exist
In the preparation process of aluminium powder glue is as follows: the raw rubber of investment contents of ethylene 0.16% in present vacuum kneader is uniformly sprinkled into oxygen
Change zinc, zinc stearate, two kinds of aluminium hydroxides point are put into several times, and vinyltrimethoxysilane is uniformly sprinkling upon when putting into aluminium powder
Its surface, every time put into aluminium powder before sizing material must stir it is agglomerating, heat treatment 25-35min discharging, park more than for 24 hours.
6. a kind of preparation method of ultra-high-voltage post composite insulator rubber compound according to claim 1, feature exist
In the preparation process for mixing kneading is as follows: in proportion in vacuum kneader investment reach the storage period requirement hard charcoal black glue,
Aluminium powder glue, stearic acid, vinyltrimethoxysilane, polytetrafluoroethylsolution solution, put into color masterbatch after mixing evenly, divide and throw several times
Enter fume colloidal silica, every time put into white carbon black before sizing material must stir it is agglomerating, heat treatment 40-60min discharging, park for 24 hours with
On obtain product.
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Application publication date: 20190222 |