CN114854206A - Silicone rubber material for high-voltage cable accessories and preparation method thereof - Google Patents
Silicone rubber material for high-voltage cable accessories and preparation method thereof Download PDFInfo
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- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
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- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
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- C08K3/22—Oxides; Hydroxides of metals
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- 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
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- 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
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2275—Ferroso-ferric oxide (Fe3O4)
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- C—CHEMISTRY; METALLURGY
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- 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 provides a silicone rubber material for high-voltage cable accessories and a preparation method thereof, wherein the silicone rubber material comprises the following components in parts by weight: 100 parts of methyl vinyl silicone oil, 10-20 parts of fumed silica, 0.1-1 part of cross-linking agent, 0.01-0.1 part of platinum catalyst, 0.1-0.5 part of inhibitor and 0.1-1 part of anti-aging auxiliary agent. In the invention, the liquid silicone rubber and the excellent white carbon black system are adopted, so that excellent insulating property (high breakdown strength and large volume resistivity) and tensile property are ensured; a small amount of white carbon black is added, so that the tensile property and the hardness are ensured; the addition of the aging resistant agent enables the material to have higher thermal decomposition temperature, and greatly improves the heat resistance of the material.
Description
Technical Field
The invention relates to the technical field of electric insulating materials, in particular to a silicone rubber material for high-voltage cable accessories and a preparation method thereof.
Background
At present, a direct current cable insulating material and a direct current cable of 500kV have been independently researched and developed in China, and a large number of sampling and product performance tests are carried out so as to fully evaluate the reliability of a new material. However, the design and application of high voltage dc cable accessories and the development of accessory insulation have lagged behind cables. The prefabricated high-voltage and ultrahigh-voltage cable accessory silicone rubber used in practical engineering application is an imported product and is used as an important component of a power transmission and distribution line, and the cable accessory not only can ensure normal transmission of electric energy and disperse electric field concentration at a cable terminal, but also has the advantages of high insulating strength, good sealing performance, excellent mechanical strength, high conductor connection reliability and the like. From the market perspective, 220kV and above cable accessory products are basically monopolized by foreign companies such as ABB, Siemens, NKF and Pirelli, and the imported cable accessory insulating materials are various and have different structural forms, so that once the cable accessory has an operation fault, the cable accessory causes great loss to a power system due to complex and complicated technical reasons and maintenance procedures, and the operation and maintenance of the power system network are seriously influenced.
The domestic liquid silicone rubber still has the following two outstanding problems: 1) the electrical properties are not sufficiently excellent and the electrical insulation strength is still required to be improved. 2) The mechanical property can not completely meet the requirement, and particularly the requirement on the definite elongation deformation rate is higher.
Disclosure of Invention
In view of the above, the invention provides a silicone rubber material for high-voltage cable accessories and a preparation method thereof, and aims to solve the problem that the existing silicone rubber material is poor in insulating property and machining property.
In one aspect, the invention provides a silicone rubber material for high-voltage cable accessories, which comprises the following components in parts by weight: 100 parts of methyl vinyl silicone oil, 10-20 parts of fumed silica, 0.1-1 part of a cross-linking agent, 0.01-0.1 part of a platinum catalyst, 0.1-0.5 part of an inhibitor and 0.1-1 part of an anti-aging auxiliary agent.
Further, in the silicone rubber material for high-voltage cable accessories, the viscosity of the methyl vinyl silicone oil is 10000-50000 mPa.s.
Further, in the silicone rubber material for high-voltage cable accessories, the fumed silica is hydrophobic-treated silica, and the specific surface area of the fumed silica is 200-380m 2 The hydrophobic treatment agent is one of hexamethyldisilazane, a silane coupling agent or hexamethyldisiloxane.
Further, in the silicone rubber material for high-voltage cable accessories, the cross-linking agent is organopolysiloxane containing at least two Si-H bonds or a mixture of silanes with different hydrogen contents, wherein the hydrogen content in the silanes is 0.5-0.9%.
Furthermore, in the silicon rubber material for the high-voltage cable accessories, the platinum catalyst takes chloroplatinic acid or platinum salt as a main raw material active component, and the content of platinum is 400-600 ppm.
Further, in the silicone rubber material for high-voltage cable accessories, the inhibitor is at least one selected from the group consisting of 1-ethynylcyclohexanol, 2-methyl-3-butynol and 3-methyl-dodecenyl alcohol.
Further, in the silicone rubber material for high-voltage cable accessories, the anti-aging agent is a composition composed of cerium oxide, titanium dioxide and ferroferric oxide, wherein the cerium oxide accounts for 50-75 wt% of the composition, and the titanium oxide and the ferroferric oxide account for 25-50 wt% of the composition.
In the invention, the liquid silicone rubber and the excellent white carbon black system are adopted, so that excellent insulating property (high breakdown strength and large volume resistivity) and tensile property are ensured; a small amount of white carbon black is added, so that the tensile property and the hardness are ensured; the addition of the aging resistant agent enables the material to have higher thermal decomposition temperature, and greatly improves the heat resistance of the material.
On the other hand, the invention also provides a preparation method of the silicone rubber material for the high-voltage cable accessories, which comprises the following steps:
uniformly stirring and mixing 100 parts of methyl vinyl silicone oil and 10-20 parts of fumed silica at room temperature for a period of time, heating to a first preset temperature, continuously stirring and mixing for a first preset time, cooling, and cooling to room temperature to obtain a base adhesive;
taking 100 parts of the base rubber, and uniformly stirring and mixing with 0.01-0.1 part of platinum catalyst to obtain glue A;
taking 100 parts of the base rubber, and uniformly stirring and mixing with 0.1-1 part of a cross-linking agent, 0.1-0.5 part of an inhibitor and 0.1-1 part of an anti-aging agent to obtain a B rubber;
and uniformly mixing the prepared glue A and the glue B according to the mass ratio of 1:1, and curing at a second preset temperature for a second preset time to obtain the silicone rubber material for the high-voltage cable accessory.
Further, in the above preparation method, the first predetermined temperature is 130-160 ℃; the first preset time is 0.5-1.5 h.
Further, in the above preparation method, the second preset temperature is 100-; the second preset time is 10-30 min.
The preparation method of the silicone rubber material for the high-voltage cable accessories, provided by the invention, has the advantages that the process is simple, the prepared silicone rubber material has excellent electrical property, tensile property, fluidity and processability, the working efficiency is high, the silicone rubber material is suitable for mass production, and the like. Wherein the tensile elongation at break is more than or equal to 500 percent, the tensile strength is more than or equal to 8MPa, the Shore A hardness is less than or equal to 50, the resistivity of a direct current system (23 ℃) is more than or equal to 1016 omega-cm, the resistivity of a direct current volume (50 ℃) is more than or equal to 5 multiplied by 1014 omega-cm, and the direct current breakdown strength (1mm sample piece) is more than or equal to 50 kV/mm.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
On one hand, the embodiment of the invention provides a silicone rubber material for high-voltage cable accessories, which comprises the following components in parts by weight: 100 parts of methyl vinyl silicone oil, 10-20 parts of fumed silica, 0.1-1 part of a cross-linking agent, 0.01-0.1 part of a platinum catalyst, 0.1-0.5 part of an inhibitor and 0.1-1 part of an anti-aging auxiliary agent.
Specifically, the methyl vinyl silicone oil with the viscosity of 10000-50000 mPa.s can be selected as the methyl vinyl silicone oil, the surface of the methyl vinyl silicone oil is smooth, the vulcanization reaction is easier to perform, the compression permanent deformation resistance is smaller, thicker samples and products can be prepared, and the operation is simple, convenient and easy to control.
The fumed silica is hydrophobic treated silica, and the specific surface area of the fumed silica is 200-380m 2 The larger specific surface area is more beneficial to the dispersibility of the silicon rubber in a silicon rubber matrix, so that the performance of the material is more stable.
The hydrophobic treatment agent is hexamethyldisilazane, a silane coupling agent or hexamethyldisiloxane.
The volume resistivity of the formula of the silicone rubber for the high-voltage cable accessory is very small in change with temperature, the conductivity of the silicone rubber material is regulated and controlled through the specific surface area and the addition amount of the white carbon black, so that the conductivity of the cable and the cable accessory reaches the optimal matching state, the difference of resistivity changes of different materials caused by temperature is reduced, and the automatic homogenization of an electric field is realized.
The cross-linking agent is organopolysiloxane containing at least two Si-H bonds or a mixture of silanes with different hydrogen contents, the hydrogen content is 0.5% -0.9%, such as polydimethylsiloxane, triethoxysilane, diethoxy polydimethylsiloxane, tetravinyltetramethylcyclotetrasiloxane and tetramethyldihydro disiloxane.
The platinum catalyst takes chloroplatinic acid or platinum salt as a main raw material active component, and the content of platinum is 400-600 ppm. The platinum salt may be K 2 PtCl 4 Or diammineplatinum dichloride and the like. The platinum catalyst can be used for high-efficiency catalytic reaction to form high-performance rubber compound, and simultaneously, the catalyst can also play a role of a mold pressing forming agent.
The inhibitor is selected from at least one of 1-ethynylcyclohexanol, 2-methyl-3-butynol and 3-methyl-dodecenyl alcohol. In the embodiment, the inhibitor is adopted, so that the hydrosilylation reactant is not crosslinked or crosslinked in a delayed way at normal temperature, and the hydrosilylation reactant can be crosslinked quickly when the temperature reaches the vulcanization temperature, so that the performance of the product is ensured.
The anti-aging agent is a composition consisting of cerium oxide, titanium dioxide and ferroferric oxide, wherein the cerium oxide accounts for 50-75 wt% of the composition, and the titanium oxide and the ferroferric oxide account for 25-50 wt% of the composition. The heat aging resistant agent composed of cerium oxide, titanium dioxide and ferroferric oxide is beneficial to improving the heat aging resistant performance of the silicon rubber, thereby effectively improving the ablation resistant performance of the silicon rubber material.
According to the invention, the silicon rubber material for the high-voltage cable accessory in the embodiment of the invention adopts the liquid silicon rubber and the excellent white carbon black system, so that the excellent insulating property (high breakdown strength and large volume resistivity) and tensile property are ensured; proper amount of white carbon black is added, so that the tensile property and hardness of the silicon rubber material are ensured while the conductivity of the silicon rubber material is regulated; the addition of the aging resistant agent enables the material to have higher thermal decomposition temperature, and greatly improves the heat resistance of the material.
On the other hand, the invention also provides a preparation method of the silicone rubber material for the high-voltage cable accessories, which comprises the following steps:
step S1, uniformly stirring and mixing 100 parts of methyl vinyl silicone oil and 10-20 parts of fumed silica at room temperature for a period of time, heating to a first preset temperature, continuously stirring and mixing for a first preset time, cooling, and cooling to room temperature to obtain the base rubber. In this step, the first preset temperature is 130-160 ℃; the first preset time is 0.5-1.5 h. Preferably, the methyl vinyl silicone oil and the fumed silica are put into an internal mixer, uniformly stirred for 2-3 hours at room temperature, heated to 140-160 ℃, and then continuously stirred for 0.5-1.5 hours.
And step S2, taking 100 parts of the base rubber, and uniformly stirring and mixing the base rubber and 0.01-0.1 part of platinum catalyst to obtain the glue A. In the step, the base rubber and the platinum catalyst are put into a planetary stirrer to be stirred and mixed.
And step S3, mixing 100 parts of the base rubber, 0.1-1 part of cross-linking agent, 0.1-0.5 part of inhibitor and 0.1-1 part of anti-aging agent uniformly to obtain the B rubber.
In the step, the base rubber, the cross-linking agent, the inhibitor and the anti-aging agent are put into a planetary mixer to be mixed.
And step S4, uniformly mixing the prepared glue A and the glue B according to the mass ratio of 1:1, and curing at a second preset temperature for a second preset time to obtain the silicone rubber material for the high-voltage cable accessories.
In this step, the second preset temperature is 100-; the second preset time is 10-30 min.
Preferably, the second preset temperature is 110-; the second preset time is 10-20 min.
In conclusion, the silicone rubber material for the high-voltage cable accessories provided by the invention has the advantages of simple process and mild preparation conditions, and the prepared silicone rubber material has excellent electrical property, tensile property, fluidity and processability, and is high in working efficiency and suitable for mass production. Wherein the tensile elongation at break is more than or equal to 500 percent, the tensile strength is more than or equal to 8MPa, the Shore hardness A is less than or equal to 50, and the resistivity (23 ℃) of a direct current system is more than or equal to 10 16 Omega cm, direct current volume resistivity (50 deg.C) is not less than 5X 10 14 Omega cm, the direct current breakdown strength (1mm sample) is more than or equal to 50 kV/mm.
The embodiments of the present invention will now be described in further detail with reference to specific examples.
Example 1
100 parts of methyl vinyl silicone oil with viscosity of 20000 mPa.s and 15 parts of methyl vinyl silicone oil with specific surface area of 380m 2 Putting the/g fumed silica (the hydrophobic treatment agent is hexamethyldisilazane) into an internal mixer, uniformly stirring and mixing for 3h at room temperature, heating to 150 ℃, preserving heat for 1h, cooling and cooling to room temperature to obtain base rubber;
100 parts of the obtained base rubber and 0.04 part of platinum catalyst with the platinum content of 600ppm are put into a planetary stirrer to be stirred and mixed uniformly to obtain rubber A;
adding 100 parts of the obtained base rubber, 0.4 part of a cross-linking agent (dimethyl siloxane with the hydrogen content of 0.7%), 0.4 part of an inhibitor (2-methyl-3-butynol) and 0.4 part of an anti-aging agent (a composition consisting of cerium oxide, titanium dioxide and ferroferric oxide, wherein the cerium oxide accounts for 60wt%, and the titanium oxide and the ferroferric oxide account for 40 wt%) into a planetary mixer, and uniformly stirring and mixing to obtain a B rubber;
and uniformly mixing the prepared A glue and the B glue according to the mass ratio of 1:1, and curing for 15min at 110 ℃ to obtain the silicone rubber material for the high-voltage cable accessory.
Example 2
100 parts of methyl vinyl silicone oil with the viscosity of 10000 mPa.s and 20 parts of methyl vinyl silicone oil with the specific surface area of 250 m 2 Putting the/g fumed silica (the hydrophobic treatment agent is hexamethyldisiloxane) into an internal mixer, uniformly stirring and mixing for 2.5h at room temperature, heating to 140 ℃, preserving heat for 1.5h, cooling and cooling to room temperature to obtain base rubber;
100 parts of the obtained base rubber and 0.06 part of platinum catalyst with platinum content of 500ppm are put into a planetary stirrer to be stirred and mixed evenly to obtain rubber A;
adding 100 parts of the obtained base adhesive, 0.3 part of a cross-linking agent (tetramethyldihydro disiloxane with the hydrogen content of 0.65%), 0.3 part of an inhibitor (1-ethynylcyclohexanol) and 0.6 part of an anti-aging agent (a composition consisting of cerium oxide, titanium dioxide and ferroferric oxide, wherein the cerium oxide accounts for 70wt%, and the titanium oxide and the ferroferric oxide account for 30 wt%) into a planetary mixer, and uniformly stirring and mixing to obtain an adhesive B;
and uniformly mixing the prepared A glue and the B glue according to the mass ratio of 1:1, and curing for 20min at 120 ℃ to obtain the silicone rubber material for the high-voltage cable accessory.
Comparative example 1
100 parts of methyl vinyl silicone oil with the viscosity of 5000 mPas and 25 parts of methyl vinyl silicone oil with the specific surface area of 150m 2 Putting the/g fumed silica (the hydrophobic treatment agent is hexamethyldisilazane) into an internal mixer, uniformly stirring and mixing for 2h at room temperature, heating to 125 ℃, preserving heat for 1h, cooling and cooling to room temperature to obtain base rubber;
100 parts of the obtained base rubber and 0.05 part of platinum catalyst with the platinum content of 550ppm are put into a planetary stirrer to be stirred and mixed evenly to obtain rubber A;
taking 100 parts of the obtained base rubber, and putting 0.4 part of cross-linking agent (diethoxy polydimethylsiloxane with the hydrogen content of 0.55%), 0.4 part of 1-ethynylcyclohexanol and 0.4 part of anti-aging agent (a composition consisting of cerium oxide, titanium dioxide and ferroferric oxide, wherein the cerium oxide accounts for 60wt%, and the titanium oxide and the ferroferric oxide account for 40 wt%) into a planetary mixer to be uniformly stirred and mixed to obtain rubber B;
and uniformly mixing the prepared A glue and the B glue according to the mass ratio of 1:1, and curing for 15min at 120 ℃ to obtain the silicone rubber material for the high-voltage cable accessory.
Comparative example 2
100 parts of methyl vinyl silicone oil with the viscosity of 60000 mPas and 9 parts of methyl vinyl silicone oil with the specific surface area of 400m 2 Putting the/g fumed silica (the hydrophobic treatment agent is hexamethyldisiloxane) into an internal mixer, uniformly stirring and mixing for 2 hours at room temperature, heating to 165 ℃, keeping the temperature for 1 hour, cooling and cooling to room temperature to obtain base rubber;
100 parts of the obtained base rubber and 0.03 part of platinum catalyst with the platinum content of 300ppm are put into a planetary stirrer to be stirred and mixed uniformly to obtain rubber A;
taking 100 parts of the obtained base rubber, and putting 0.6 part of cross-linking agent (tetramethyltetravinylcyclotetrasiloxane with the hydrogen content of 0.75%) and 0.6 part of 1-ethynylcyclohexanol into a planetary stirrer to be stirred and mixed uniformly to obtain rubber B;
and uniformly mixing the prepared glue A and the glue B according to the mass ratio of 1:1, and curing for 18min at 135 ℃ to obtain the silicone rubber material for the high-voltage cable accessory.
The silicone rubber materials for high-voltage cable accessories provided in examples 1-2 and comparative example 1 were subjected to the relevant performance tests, and the test results are shown in the following table 1:
TABLE 1
As can be seen from Table 1, the raw materials with proper mixture ratio adopted by the invention have excellent electrical property, tensile property and fluidity through the synergistic effect of the raw materials. The high-temperature-resistant ozone-resistant coating also has excellent performances of high and low temperature resistance, ozone resistance, production inertia and the like, and has the advantages of high working efficiency, suitability for mass production and the like. In particular, the elongation at break is more than or equal to 500 percent, the tensile strength is more than or equal to 8MPa, the Shore hardness A is less than or equal to 50, and the resistance of a direct current systemThe rate (23 ℃) is more than or equal to 10 16 Omega cm, direct current volume resistivity (50 deg.C) is not less than 5X 10 14 Omega cm, the direct current breakdown strength (1mm sample) is more than or equal to 50kV/mm, the comprehensive performance of the silicon rubber material in the comparative example is obviously superior, and the high-voltage cable accessory can be better adapted to the application environment of the high-voltage cable accessory.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The silicone rubber material for the high-voltage cable accessories is characterized by comprising the following components in parts by weight: 100 parts of methyl vinyl silicone oil, 10-20 parts of fumed silica, 0.1-1 part of a cross-linking agent, 0.01-0.1 part of a platinum catalyst, 0.1-0.5 part of an inhibitor and 0.1-1 part of an anti-aging auxiliary agent.
2. The silicone rubber material for high-voltage cable accessories according to claim 1, wherein the viscosity of the methyl vinyl silicone oil is 10000-50000 mPa.s.
3. The silicone rubber material for high-voltage cable accessories as claimed in claim 1, wherein the fumed silica is a hydrophobic silica having a specific surface area of 200-380m 2 The hydrophobic treatment agent is hexamethyldisilazane, a silane coupling agent or hexamethyldisiloxane.
4. The silicone rubber material for high-voltage cable accessories according to claim 1, wherein the crosslinking agent is an organopolysiloxane having at least two Si-H bonds or a mixture of silanes having different hydrogen contents, wherein the silane has a hydrogen content of 0.5% to 0.9%.
5. The silicone rubber material for high-voltage cable accessories as claimed in claim 1, wherein the platinum catalyst comprises chloroplatinic acid or platinum salt as a main raw material active component, and the platinum content is 400-600 ppm.
6. The silicone rubber material for high-voltage cable accessories according to claim 1, wherein the inhibitor is at least one selected from the group consisting of 1-ethynylcyclohexanol, 2-methyl-3-butynol, and 3-methyl-dodecenyl alcohol.
7. The silicone rubber material for high-voltage cable accessories according to claim 1, wherein the age resister is a composition consisting of cerium oxide, titanium dioxide and ferroferric oxide, wherein the cerium oxide accounts for 50-75 wt% of the composition, and the titanium oxide and the ferroferric oxide account for 25-50 wt% of the composition.
8. A preparation method of a silicone rubber material for high-voltage cable accessories is characterized by comprising the following steps:
uniformly stirring and mixing 100 parts of methyl vinyl silicone oil and 10-20 parts of fumed silica at room temperature for a period of time, heating to a first preset temperature, continuously stirring and mixing for a first preset time, cooling, and cooling to room temperature to obtain a base adhesive;
taking 100 parts of the base rubber, and uniformly stirring and mixing with 0.01-0.1 part of platinum catalyst to obtain glue A;
taking 100 parts of the base rubber, and uniformly stirring and mixing with 0.1-1 part of a cross-linking agent, 0.1-0.5 part of an inhibitor and 0.1-1 part of an anti-aging agent to obtain a B rubber;
and uniformly mixing the prepared glue A and the glue B according to the mass ratio of 1:1, and curing at a second preset temperature for a second preset time to obtain the silicone rubber material for the high-voltage cable accessory.
9. The method for preparing the silicone rubber material for the high-voltage cable accessory according to claim 8, wherein the first predetermined temperature is 130-160 ℃; the first preset time is 0.5-1.5 h.
10. The method for preparing the silicone rubber material for the high-voltage cable accessory according to claim 8, wherein the second predetermined temperature is 100-130 ℃; the second preset time is 10-30 min.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102924926A (en) * | 2012-11-01 | 2013-02-13 | 深圳市森日有机硅材料有限公司 | Liquid silicone rubber composition and preparation method thereof |
| WO2016082286A1 (en) * | 2014-11-27 | 2016-06-02 | 深圳市森日有机硅材料有限公司 | Method for preparing liquid silicone rubber composition |
| CN107858002A (en) * | 2017-10-27 | 2018-03-30 | 浙江新安化工集团股份有限公司 | A kind of shrinkage cable liquid silicon rubber composition and preparation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102924926A (en) * | 2012-11-01 | 2013-02-13 | 深圳市森日有机硅材料有限公司 | Liquid silicone rubber composition and preparation method thereof |
| WO2016082286A1 (en) * | 2014-11-27 | 2016-06-02 | 深圳市森日有机硅材料有限公司 | Method for preparing liquid silicone rubber composition |
| CN107858002A (en) * | 2017-10-27 | 2018-03-30 | 浙江新安化工集团股份有限公司 | A kind of shrinkage cable liquid silicon rubber composition and preparation method thereof |
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