CN110713725A - Ceramic silicon rubber composite insulating cable material - Google Patents
Ceramic silicon rubber composite insulating cable material Download PDFInfo
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- CN110713725A CN110713725A CN201810766939.7A CN201810766939A CN110713725A CN 110713725 A CN110713725 A CN 110713725A CN 201810766939 A CN201810766939 A CN 201810766939A CN 110713725 A CN110713725 A CN 110713725A
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- cable material
- rubber composite
- silicone rubber
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/46—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes silicones
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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
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
Abstract
The invention discloses a ceramic silicon rubber composite insulated cable material which comprises the following components, by weight, 15 ~ 25 parts of ethylene methacrylic acid copolymer, 5 ~ 10 parts of diphenyl silanediol, 12 ~ 15 parts of glass powder, 6 ~ 10 parts of boron nitride, 10 ~ 15 parts of magnesium oxide, fumed silica, 1 ~ 5 parts of isopropyl titanate, dicumyl peroxide, methyl phenyl diethoxysilane, 0.5 ~ 1 part of 1, 3-dimethyl-6-semicarbazide pyrimidine, 0.5 ~ 1 part of fumed silica, 1 part of lithium china stone powder and 1 ~ 2 parts of [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester.
Description
Technical Field
The invention relates to the technical field of silicone rubber composite materials, in particular to a ceramic silicone rubber composite insulating cable material.
Background
The silicon rubber has low density, high insulating property, excellent mechanical property and ablation resistance, and the ceramic silicon rubber composite material capable of being molded or extruded can be prepared by taking the silicon rubber as a matrix and adding a ceramic filler and a sintering aid. When high temperature or flame ablation is met, a hard ceramic layer can be formed on the surface of the composite material, and the interior of the material is effectively isolated from the outside. The ceramifiable silicon rubber fire-resistant cable prepared from the ceramifiable silicon rubber has the characteristics of high temperature resistance, ageing resistance, excellent electrical property and the like of a common silicon rubber wire and cable at normal temperature, and is sintered into a hard ceramifiable shell in a short time after being fired by flame. The hard ceramic shell ensures that the circuit is not short-circuited or broken in the ablation process, thereby ensuring that the circuit is not powered off in a fire disaster, providing guarantee for escape and rescue, and having broad market prospect. However, the existing ceramic cable has many defects in the using process, a ceramic structure can be formed only at a high temperature, and the ceramic cable is unstable in structure, poor in tensile resistance and impact resistance and incapable of achieving a good insulating function.
Disclosure of Invention
The invention aims to provide a ceramic silicon rubber composite insulated cable material which has good tensile resistance and impact resistance, uniform and compact ceramic shell structure, difficult cracking and good insulating property, improves the reliability in practical application and prolongs the service life.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows: the ceramic silicon rubber composite insulating cable material comprises the following components in parts by weight:
100 parts of methyl vinyl silicone rubber,
15 parts of ethylene methacrylic acid copolymer 15 ~ 25 parts,
5 ~ 10 parts of diphenyl silanediol,
12 parts of glass powder, 12 ~ 15 parts of glass powder,
6 parts of 6 ~ 10 parts of boron nitride,
10 parts of magnesium oxide (10 ~ 15), and (2),
8 ~ 15 parts of fumed silica, namely,
1 part of isopropyl titanate 1 ~ 5 parts,
0.6 part of dicumyl peroxide 0.6 ~ 2 parts,
1 ~ 5 parts of methyl phenyl diethoxysilane,
0.5 part of 1, 3-dimethyl-6-semicarbazide pyrimidine 0.5 ~ 1,
0.5 ~ 1 parts of white carbon black by a meteorological method,
3 ~ 8 parts of lithium porcelain stone powder,
1 ~ 2 parts of [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester.
The technical scheme of further improvement in the technical scheme is as follows:
1. in the scheme, the average molecular weight of the methyl vinyl silicone rubber is 60-80 ten thousand.
2. In the above scheme, the fumed silica has a specific surface area of 200 ~ 400m2/g。
3. In the scheme, the particle size of the aluminum hydroxide is 5000 ~ 8000 meshes.
4. In the scheme, the weight ratio of the boron nitride to the magnesium oxide is 1:1 ~ 1.5.5.
5. In the scheme, the vinyl mole percentage content of the methyl vinyl silicone rubber is 0.05 percent ~ 0.25.25 percent.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages and effects:
1. the invention relates to a ceramic silicon rubber composite insulating cable material, which is based on a system of 70 ~ parts of methyl vinyl silicon rubber and 10 ~ parts of ethylene methacrylic acid copolymer, wherein isopropyl titanate, methyl phenyl diethoxy silane and 1, 3-dimethyl-6-semicarbazide pyrimidine are added, so that the mechanical property and the structural stability of the ceramic silicon rubber composite insulating cable material containing methyl vinyl silicon rubber, glass powder and magnesium oxide are improved, the tensile resistance and the shock resistance are improved, the cracking or density reduction of a final ceramic shell layer is avoided, and the reliability and the service life of a cable taking the silicon rubber as the composite insulating material in practical application are effectively improved.
2. According to the ceramic silicone rubber composite insulated cable material, the diphenyl silanediol and the lithium china stone powder are added into the system, so that the formula of the ceramic silicone rubber containing the methyl vinyl silicone rubber, the glass powder, the magnesium oxide and the gas-phase-method silicon dioxide is optimized, the sintering temperature of ceramic of the ceramic silicone rubber composite insulated cable material can be obviously reduced, the sintering time is shortened, and the energy consumption is reduced.
Detailed Description
The invention is further described below with reference to the following examples:
example 1 ~ 4A ceramicized silicone rubber composite insulated cable material, comprising the following components in parts by weight, as shown in Table 1:
TABLE 1
The average molecular weight of the methyl vinyl silicone rubber is 60-80 ten thousand;
the fumed silica has a specific surface area of 200 ~ 400m2/g；
The particle size of the aluminum hydroxide is 5000 ~ 8000 meshes;
the vinyl mole percentage content of the methyl vinyl silicone rubber is 0.05 percent ~ 0.25.25 percent;
a preparation method for the ceramic silicon rubber composite insulating cable material comprises the following steps:
step one, weighing the components in parts by weight;
secondly, adding 1 ~ 5 parts of isopropyl titanate into 12 ~ 15 parts of glass powder, 6 ~ 10 parts of boron nitride, 10 ~ 15 parts of magnesium oxide and 8 ~ 15 parts of fumed silica respectively, and stirring in a kneader for 10min for later use;
step three, roll-coating and mixing 100 parts of methyl vinyl silicone rubber and 15 ~ 25 parts of ethylene methacrylic acid copolymer at the mixing temperature of below 50 ℃ for 10 min;
step four, adding 12 ~ 15 parts of glass powder subjected to surface treatment, 6 ~ 10 parts of boron nitride, 10 ~ 15 parts of magnesium oxide and 8 ~ 15 parts of fumed silica into the raw roll rubber obtained in the step three, and mixing for 20min at the mixing temperature of below 50 ℃;
step five, adding 0.5 ~ 1 parts of fumed silica, 1 ~ 5 parts of methyl phenyl diethoxysilane and 5 ~ 10 parts of diphenyl silanediol into the mixed rubber obtained in the step four, and mixing for 5min at the mixing temperature of below 50 ℃;
step six, adding 3 ~ 8 parts of manganese dioxide and laponite powder subjected to surface treatment into the mixed rubber obtained in the step five, and mixing for 10 ~ 20min at the mixing temperature of below 50 ℃;
step seven, performing heat treatment on the mixed rubber obtained in the step six in an oven at 180 ℃ for 1 ~ 2h, cooling for 12h, then performing remilling, mixing at room temperature, then adding 0.5 ~ 1 parts of 1, 3-dimethyl-6-semicarbazide pyrimidine and 1 ~ 2 parts of [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester, mixing at the temperature of below 50 ℃ for 5 min;
step eight, after the sizing material is cooled to room temperature, adding 0.6 part of dicumyl peroxide 0.6 ~ 2 parts into a kneading machine, controlling the temperature to be 160-180 ℃, and controlling the time to be 10-15 min to obtain the ceramic silicon rubber composite insulating cable material;
in the second to seventh steps, the roller speed ratio of the two-roller open mill is 1.0 ~ 1.5: 1, the roller speed ratio is fast, the roller distance is smaller than 1 ~ 5mm during mixing, and then the roller speed ratio is gradually increased.
The detection indexes of the embodiment are shown in table 2:
TABLE 2
As can be seen from Table 2, the ceramic silicone rubber composite insulated cable material has the advantages of tensile resistance, low permanent deformation rate and good flame retardant property, improves the mechanical property and the structural stability of the ceramic silicone rubber composite insulated cable material containing methyl vinyl silicone rubber, glass powder and magnesium oxide, improves the tensile resistance and the impact resistance, avoids cracking or density reduction of a final ceramic shell layer, and effectively improves the reliability and the service life of a cable taking the silicone rubber as the composite insulated material in practical application; and the formula of the ceramic silicone rubber containing the methyl vinyl silicone rubber, the glass powder, the magnesium oxide and the gas-phase-method silicon dioxide is optimized, so that the sintering temperature of ceramic of the ceramic silicone rubber composite insulated cable material can be obviously reduced, the sintering time is shortened, and the energy consumption is reduced.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (6)
1. A ceramic silicon rubber composite insulation cable material is characterized in that: the ceramic silicon rubber composite insulating cable material comprises the following components in parts by weight:
100 parts of methyl vinyl silicone rubber,
15 parts of ethylene methacrylic acid copolymer 15 ~ 25 parts,
5 ~ 10 parts of diphenyl silanediol,
12 parts of glass powder, 12 ~ 15 parts of glass powder,
6 parts of 6 ~ 10 parts of boron nitride,
10 parts of magnesium oxide (10 ~ 15), and (2),
8 ~ 15 parts of fumed silica, namely,
1 part of isopropyl titanate 1 ~ 5 parts,
0.6 part of dicumyl peroxide 0.6 ~ 2 parts,
1 ~ 5 parts of methyl phenyl diethoxysilane,
0.5 part of 1, 3-dimethyl-6-semicarbazide pyrimidine 0.5 ~ 1,
0.5 ~ 1 parts of white carbon black by a meteorological method,
3 ~ 8 parts of lithium porcelain stone powder,
1 ~ 2 parts of [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester.
2. The ceramic silicone rubber composite insulated cable material according to claim 1, wherein the average molecular weight of the methyl vinyl silicone rubber is 60 ~ 80 ten thousand.
3. The ceramified silicone rubber composite insulated cable material according to claim 1, wherein the fumed silica has a specific surface area of 200 ~ 400m2/g。
4. The ceramic silicone rubber composite insulated cable material according to claim 1, wherein the particle size of the aluminum hydroxide is 5000 ~ 8000 mesh.
5. The ceramic silicon rubber composite insulated cable material according to claim 1, wherein the weight ratio of boron nitride to magnesium oxide is 1:1 ~ 1.5.5.
6. The ceramic silicone rubber composite insulated cable material of claim 1, wherein the methyl vinyl silicone rubber has a vinyl molar percentage of 0.05% ~ 0.25.25%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810766939.7A CN110713725A (en) | 2018-07-13 | 2018-07-13 | Ceramic silicon rubber composite insulating cable material |
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| CN201810766939.7A CN110713725A (en) | 2018-07-13 | 2018-07-13 | Ceramic silicon rubber composite insulating cable material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111363271A (en) * | 2020-04-09 | 2020-07-03 | 江苏法斯特电力科技有限公司 | Corrosion-resistant MPP power cable protection pipe material and preparation method thereof |
| CN111808427A (en) * | 2020-06-29 | 2020-10-23 | 江苏亨通电子线缆科技有限公司 | Photoelectric composite cable for forest fire prevention early warning system |
| CN111816354A (en) * | 2020-06-29 | 2020-10-23 | 江苏亨通电子线缆科技有限公司 | Capacity-expandable photoelectric composite cable for forest fire prevention early warning system |
| CN112397241A (en) * | 2020-11-18 | 2021-02-23 | 安徽鸿海电缆有限公司 | Pottery silicon rubber insulation environment-friendly this ampere of instrument cable |
| CN113698687A (en) * | 2021-08-17 | 2021-11-26 | 浙江方圆检测集团股份有限公司 | Medium-high temperature rapid ceramic PE-based polyolefin fire-resistant cable sheath material composite particle and preparation method thereof |
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| CN102850805A (en) * | 2012-09-24 | 2013-01-02 | 无锡江南电缆有限公司 | Fire-resistant ceramic silicone rubber, preparation method of fire-resistant ceramic silicone rubber and application in wires and cables |
| CN103122095A (en) * | 2012-12-28 | 2013-05-29 | 深圳市沃尔核材股份有限公司 | Ceramized silicone rubber heat shrinkable bushing and production method thereof |
| CN103923465A (en) * | 2014-04-25 | 2014-07-16 | 华东理工大学 | Environment-friendly ablation-resistant ceramic silicone rubber composite material and preparation method thereof |
| US20170250007A1 (en) * | 2014-09-12 | 2017-08-31 | Prysmian S.P.A | Fire resistant cable with ceramifiable layer |
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2018
- 2018-07-13 CN CN201810766939.7A patent/CN110713725A/en active Pending
Patent Citations (4)
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| CN103122095A (en) * | 2012-12-28 | 2013-05-29 | 深圳市沃尔核材股份有限公司 | Ceramized silicone rubber heat shrinkable bushing and production method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111363271A (en) * | 2020-04-09 | 2020-07-03 | 江苏法斯特电力科技有限公司 | Corrosion-resistant MPP power cable protection pipe material and preparation method thereof |
| CN111808427A (en) * | 2020-06-29 | 2020-10-23 | 江苏亨通电子线缆科技有限公司 | Photoelectric composite cable for forest fire prevention early warning system |
| CN111816354A (en) * | 2020-06-29 | 2020-10-23 | 江苏亨通电子线缆科技有限公司 | Capacity-expandable photoelectric composite cable for forest fire prevention early warning system |
| CN112397241A (en) * | 2020-11-18 | 2021-02-23 | 安徽鸿海电缆有限公司 | Pottery silicon rubber insulation environment-friendly this ampere of instrument cable |
| CN113698687A (en) * | 2021-08-17 | 2021-11-26 | 浙江方圆检测集团股份有限公司 | Medium-high temperature rapid ceramic PE-based polyolefin fire-resistant cable sheath material composite particle and preparation method thereof |
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Application publication date: 20200121 |