CN104292849A - Silicon rubber for composite insulator external insulation umbrella cover - Google Patents
Silicon rubber for composite insulator external insulation umbrella cover Download PDFInfo
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- CN104292849A CN104292849A CN201410551486.8A CN201410551486A CN104292849A CN 104292849 A CN104292849 A CN 104292849A CN 201410551486 A CN201410551486 A CN 201410551486A CN 104292849 A CN104292849 A CN 104292849A
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Abstract
The invention discloses silicon rubber for a composite insulator external insulation umbrella cover. The silicon rubber is prepared from the following raw materials in parts by weight: 40-70 parts of methyl vinyl silicone rubber A, 40-70 parts of methyl vinyl silicone rubber B, 30-60 parts of gaseous phase white carbon black, 100-300 parts of aluminum hydroxide, 7-10 parts of nano active zinc oxide, 7-10 parts of hydroxyl silicone oil, 2.2-10 parts of silicon oil containing hydrogen, 0.5-2 parts of color masterbatch and 1.2-2 parts of a vulcanizing agent. The silicon rubber disclosed by the invention has the beneficial effects that according to the silicon rubber by adopting a formula provided by the invention, the mechanical property, particularly the elongation at break and the tear strength of the composite insulator external insulation umbrella cover are greatly improved, the ageing-resistant performance is more excellent, and long-term reliable operation of the composite insulator in a power grid is better guaranteed. Moreover, the silicon rubber is simple, convenient and feasible in preparation method and has a good promotional value to small and medium size composite insulator production enterprises.
Description
Technical field
The present invention relates to silicon rubber and preparation method thereof, be specifically related to silicon rubber applied mechanically for composite insulator external insulation umbrella and preparation method thereof.
Background technology
Composite insulator is subject to corona discharge when operation of power networks, daylight UV width is penetrated, the chemical corrosion of arc-over, dunghill, causes the aging of external insulation umbrella cover.
Conventional composite insulator external insulation umbrella cover is by single silicon rubber compositing formula (as 110-2), because vinyl contained in single methyl vinyl silicone rubber is evenly distributed, the network structure of decentralized crosslinking is formed after sulfuration, when being subject to External Force Acting, its cross-link bond will rupture one by one, so the mechanical property of cross-linked rubber is poor, long-time running can make composite insulator external insulation umbrella cover aging, surface hydrophobicity declines, and causes power grid security accident.
The patent No. 201010591839.9 discloses a kind of silicone rubber for composite insulator, compared with the single silicon rubber of employing, there is better weathering resistance and heat-resistant aging, but its complicated process of preparation, the production cost produced is also higher, is unfavorable for the long-run development of medium and small sized enterprises.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of composite insulator external insulation umbrella that effectively can reduce production cost and applies mechanically silicon rubber and preparation method thereof.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
Composite insulator external insulation umbrella applies mechanically silicon rubber, this silicon rubber is prepared from by the raw material of following weight: methyl vinyl silicone rubber A 40 ~ 70 parts, methyl vinyl silicone rubber B 40 ~ 70 parts, gas phase White Carbon black 30 ~ 60 parts, 100 ~ 300 parts, aluminium hydroxide, nanometer active zinc oxide 7 ~ 10 parts, hydroxy silicon oil 7 ~ 10 parts, containing hydrogen silicone oil 2.2 ~ 10 parts, colour batch 0.5 ~ 2 part, vulcanizing agent 1.2 ~ 2 parts;
Wherein, the molecular weight of above-mentioned methyl vinyl silicone rubber A is 60 ~ 700,000, and its contents of ethylene is 0.07 ~ 0.12%;
The molecular weight of above-mentioned methyl vinyl silicone rubber B is 60 ~ 700,000, and its contents of ethylene is 0.21 ~ 0.24%.
The specific surface area of above-mentioned gas phase White Carbon black is 150 ~ 300m
3/ g.
The median of above-mentioned aluminium hydroxide is 4 ~ 6 μm.
Fineness≤0.2% of above-mentioned nanometer active zinc oxide.
Above-mentioned Hydroxyl Content in Hydroxysilicone fluid is 3.6 ~ 4.5%.
Hydrogen richness >=1.58% in above-mentioned containing hydrogen silicone oil.
Prepare the method that above-mentioned composite insulator external insulation umbrella applies mechanically silicon rubber, comprise the following steps: methyl vinyl silicone rubber A, methyl vinyl silicone rubber B, gas phase White Carbon black, aluminium hydroxide, nanometer active zinc oxide, hydroxy silicon oil and containing hydrogen silicone oil are carried out mixing in Banbury mixer, temperature controls at 80 ~ 140 DEG C, kneading is carried out afterwards in kneader, temperature controls at 140 ~ 175 DEG C, vacuum degree control is at 0.04 ~ 0.08Mpa, and kneading time controls at 1 ~ 3h, and thin-pass parks 46 ~ 50h; Finally add colour batch and vulcanizing agent thin-pass filter glue.
Compared with prior art, beneficial effect of the present invention: the silicon rubber adopting the present invention's formula, the mechanical property of its composite insulator external insulation umbrella cover prepared, especially tensile yield and tear strength have had larger raising, ageing-resistant performance is also more excellent, guarantee the reliably and with long-term operation of composite insulator at electrical network better, and its preparation method is simple and easy to do, between middle-size and small-size composite insulator manufacturing enterprise, there is good promotional value.
Embodiment:
Below in conjunction with each embodiment, the invention will be further elaborated, but be not limitation of the present invention:
Embodiment 1
Composite insulator external insulation umbrella applies mechanically silicon rubber, this silicon rubber is prepared from by the raw material of following weight: methyl vinyl silicone rubber A 40 parts, methyl vinyl silicone rubber B 40 parts, gas phase White Carbon black 30 parts, 150 parts, aluminium hydroxide, nanometer active zinc oxide 7 parts, hydroxy silicon oil 7 parts, containing hydrogen silicone oil 2.2 parts, colour batch 0.5 part, vulcanizing agent 1.2 parts;
Wherein, the molecular weight of methyl vinyl silicone rubber A is 600,000, and its contents of ethylene is 0.07%; The molecular weight of methyl vinyl silicone rubber B is 600,000, and its contents of ethylene is 0.21%; The specific surface area of gas phase White Carbon black is 150m
3/ g; The median of aluminium hydroxide is 4 μm; The fineness 0.2% of nanometer active zinc oxide; Hydroxyl Content in Hydroxysilicone fluid is 3.6%; Hydrogen richness 1.58% in containing hydrogen silicone oil.
Prepare the method that above-mentioned composite insulator external insulation umbrella applies mechanically silicon rubber, comprise the following steps: methyl vinyl silicone rubber A, methyl vinyl silicone rubber B, gas phase White Carbon black, aluminium hydroxide, nanometer active zinc oxide, hydroxy silicon oil and containing hydrogen silicone oil are carried out mixing in Banbury mixer, temperature controls at 100 DEG C, kneading is carried out afterwards in kneader, temperature controls at 140 DEG C, vacuum degree control is at 0.04Mpa, and kneading time controls at 1h, and thin-pass parks 46h; Finally add colour batch and vulcanizing agent thin-pass filter glue, obtain silicon rubber gross rubber.
Sampling test, its tensile yield is 365%, and tear strength is 16kN/m.
Embodiment 2
Composite insulator external insulation umbrella applies mechanically silicon rubber, this silicon rubber is prepared from by the raw material of following weight: methyl vinyl silicone rubber A 55 parts, methyl vinyl silicone rubber B 55 parts, gas phase White Carbon black 45 parts, 225 parts, aluminium hydroxide, nanometer active zinc oxide 8 parts, hydroxy silicon oil 8 parts, containing hydrogen silicone oil 6 parts, colour batch 1.5 parts, vulcanizing agent 1.6 parts;
Wherein, the molecular weight of methyl vinyl silicone rubber A is 650,000, and its contents of ethylene is 0.09%; The molecular weight of methyl vinyl silicone rubber B is 650,000, and its contents of ethylene is 0.23%; The specific surface area of gas phase White Carbon black is 225m
3/ g; The median of aluminium hydroxide is 5 μm; The fineness 0.1% of nanometer active zinc oxide; Hydroxyl Content in Hydroxysilicone fluid is 4%; Hydrogen richness 2.12% in containing hydrogen silicone oil.
Prepare the method that above-mentioned composite insulator external insulation umbrella applies mechanically silicon rubber, comprise the following steps: methyl vinyl silicone rubber A, methyl vinyl silicone rubber B, gas phase White Carbon black, aluminium hydroxide, nanometer active zinc oxide, hydroxy silicon oil and containing hydrogen silicone oil are carried out mixing in Banbury mixer, temperature controls at 120 DEG C, kneading is carried out afterwards in kneader, temperature controls at 155 DEG C, vacuum degree control is at 0.06Mpa, and kneading time controls at 2h, and thin-pass parks 48h; Finally add colour batch and vulcanizing agent thin-pass filter glue, obtain silicon rubber gross rubber.
Sampling test, its tensile yield is 353%, and tear strength is 15kN/m.
Embodiment 3
Composite insulator external insulation umbrella applies mechanically silicon rubber, this silicon rubber is prepared from by the raw material of following weight: methyl vinyl silicone rubber A 70 parts, methyl vinyl silicone rubber B 70 parts, gas phase White Carbon black 60 parts, 300 parts, aluminium hydroxide, nanometer active zinc oxide 10 parts, hydroxy silicon oil 10 parts, containing hydrogen silicone oil 10 parts, colour batch 2 parts, vulcanizing agent 2 parts;
Wherein, the molecular weight of methyl vinyl silicone rubber A is 700,000, and its contents of ethylene is 0.12%; The molecular weight of methyl vinyl silicone rubber B is 700,000, and its contents of ethylene is 0.24%; The specific surface area of gas phase White Carbon black is 300m
3/ g; The median of aluminium hydroxide is 6 μm; The fineness 0.05% of nanometer active zinc oxide; Hydroxyl Content in Hydroxysilicone fluid is 4.5%; Hydrogen richness 3% in containing hydrogen silicone oil.
Prepare the method that above-mentioned composite insulator external insulation umbrella applies mechanically silicon rubber, comprise the following steps: methyl vinyl silicone rubber A, methyl vinyl silicone rubber B, gas phase White Carbon black, aluminium hydroxide, nanometer active zinc oxide, hydroxy silicon oil and containing hydrogen silicone oil are carried out mixing in Banbury mixer, temperature controls at 140 DEG C, kneading is carried out afterwards in kneader, temperature controls at 175 DEG C, vacuum degree control is at 0.08Mpa, and kneading time controls at 3h, and thin-pass parks 50h; Finally add colour batch and vulcanizing agent thin-pass filter glue, obtain silicon rubber gross rubber.
Sampling test, its tensile yield is 360%, and tear strength is 16kN/m.
Claims (7)
1. composite insulator external insulation umbrella applies mechanically silicon rubber, it is characterized in that, this silicon rubber is prepared from by the raw material of following weight: methyl vinyl silicone rubber A 40 ~ 70 parts, methyl vinyl silicone rubber B 40 ~ 70 parts, gas phase White Carbon black 30 ~ 60 parts, 100 ~ 300 parts, aluminium hydroxide, nanometer active zinc oxide 7 ~ 10 parts, hydroxy silicon oil 7 ~ 10 parts, containing hydrogen silicone oil 2.2 ~ 10 parts, colour batch 0.5 ~ 2 part, vulcanizing agent 1.2 ~ 2 parts;
Wherein, the molecular weight of described methyl vinyl silicone rubber A is 60 ~ 700,000, and its contents of ethylene is 0.07 ~ 0.12%;
The molecular weight of described methyl vinyl silicone rubber B is 60 ~ 700,000, and its contents of ethylene is 0.21 ~ 0.24%.
2. composite insulator external insulation umbrella according to claim 1 applies mechanically silicon rubber, it is characterized in that, the specific surface area of described gas phase White Carbon black is 150 ~ 300m
3/ g.
3. composite insulator external insulation umbrella according to claim 1 applies mechanically silicon rubber, it is characterized in that, the median of described aluminium hydroxide is 4 ~ 6 μm.
4. composite insulator external insulation umbrella according to claim 1 applies mechanically silicon rubber, it is characterized in that, fineness≤0.2% of described nanometer active zinc oxide.
5. composite insulator external insulation umbrella according to claim 1 applies mechanically silicon rubber, it is characterized in that, described Hydroxyl Content in Hydroxysilicone fluid is 3.6 ~ 4.5%.
6. composite insulator external insulation umbrella according to claim 1 applies mechanically silicon rubber, it is characterized in that, hydrogen richness >=1.58% in described containing hydrogen silicone oil.
7. prepare the method that composite insulator external insulation umbrella as claimed in claim 1 applies mechanically silicon rubber, it is characterized in that, comprise the following steps: methyl vinyl silicone rubber A, methyl vinyl silicone rubber B, gas phase White Carbon black, aluminium hydroxide, nanometer active zinc oxide, hydroxy silicon oil and containing hydrogen silicone oil are carried out mixing in Banbury mixer, temperature controls at 80 ~ 140 DEG C, kneading is carried out afterwards in kneader, temperature controls at 140 ~ 175 DEG C, vacuum degree control is at 0.04 ~ 0.08Mpa, kneading time controls at 1 ~ 3h, and thin-pass parks 46 ~ 50h; Finally add colour batch and vulcanizing agent thin-pass filter glue.
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| CN201410551486.8A CN104292849A (en) | 2014-10-17 | 2014-10-17 | Silicon rubber for composite insulator external insulation umbrella cover |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104974530A (en) * | 2015-07-16 | 2015-10-14 | 华南理工大学 | High-performance tracking-resistant silicone rubber and preparation method thereof |
| CN105504829A (en) * | 2015-12-25 | 2016-04-20 | 国网电力科学研究院武汉南瑞有限责任公司 | High-temperature silicone rubber material resistant to strong ultraviolet radiation |
| CN111253755A (en) * | 2019-12-30 | 2020-06-09 | 江东金具设备有限公司 | High-mechanical-property insulating silicone rubber material and preparation method thereof |
| CN111808429A (en) * | 2020-07-22 | 2020-10-23 | 江东金具设备有限公司 | Silicone rubber material for composite insulator and preparation method thereof |
| CN111979791A (en) * | 2020-08-11 | 2020-11-24 | 南通金秋服装辅料有限公司 | Polyurethane modified silicone rubber and preparation method thereof |
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| US3511698A (en) * | 1966-06-23 | 1970-05-12 | Dow Corning | Weatherable electrical insulators made of thermosetting resin |
| CN102070907A (en) * | 2010-12-16 | 2011-05-25 | 平高集团有限公司 | Silicone rubber for composite insulator and preparation method thereof |
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2014
- 2014-10-17 CN CN201410551486.8A patent/CN104292849A/en active Pending
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| US3511698A (en) * | 1966-06-23 | 1970-05-12 | Dow Corning | Weatherable electrical insulators made of thermosetting resin |
| CN102070907A (en) * | 2010-12-16 | 2011-05-25 | 平高集团有限公司 | Silicone rubber for composite insulator and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104974530A (en) * | 2015-07-16 | 2015-10-14 | 华南理工大学 | High-performance tracking-resistant silicone rubber and preparation method thereof |
| CN104974530B (en) * | 2015-07-16 | 2017-12-01 | 华南理工大学 | A kind of high-performance anti creepage trace silicon rubber and preparation method thereof |
| CN105504829A (en) * | 2015-12-25 | 2016-04-20 | 国网电力科学研究院武汉南瑞有限责任公司 | High-temperature silicone rubber material resistant to strong ultraviolet radiation |
| CN111253755A (en) * | 2019-12-30 | 2020-06-09 | 江东金具设备有限公司 | High-mechanical-property insulating silicone rubber material and preparation method thereof |
| CN111808429A (en) * | 2020-07-22 | 2020-10-23 | 江东金具设备有限公司 | Silicone rubber material for composite insulator and preparation method thereof |
| WO2022017200A1 (en) * | 2020-07-22 | 2022-01-27 | 江东金具设备有限公司 | Silicone rubber material for composite insulator and preparation method therefor |
| CN111979791A (en) * | 2020-08-11 | 2020-11-24 | 南通金秋服装辅料有限公司 | Polyurethane modified silicone rubber and preparation method thereof |
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