CN111286197A - Fluorosilicone rubber flame-retardant heat-conducting high-voltage insulation color code material and manufacturing process thereof - Google Patents
Fluorosilicone rubber flame-retardant heat-conducting high-voltage insulation color code material and manufacturing process thereof Download PDFInfo
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- CN111286197A CN111286197A CN202010093713.2A CN202010093713A CN111286197A CN 111286197 A CN111286197 A CN 111286197A CN 202010093713 A CN202010093713 A CN 202010093713A CN 111286197 A CN111286197 A CN 111286197A
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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
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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 relates to a fluorosilicone rubber flame-retardant heat-conducting high-voltage insulation color code material and a manufacturing process thereof, wherein the fluorosilicone rubber flame-retardant heat-conducting high-voltage insulation color code material comprises silicone resin, liquid silicone rubber, a cross-linking agent and a catalyst, wherein the ratio of the silicone resin to the liquid silicone rubber is (10: 1) - (5): the flame retardant comprises 1, 2-10% of a cross-linking agent by mass, 0.2-5% of a catalyst by mass, 5-20% of white carbon black by mass, 10-30% of aluminum hydroxide by mass, 1: 4-1: 3 by mass, and a hard covering generated by decomposition of decabromodiphenylethane and an insulating material carbide protective layer caused by aluminum hydroxide are mixed to wrap the surface of an insulating material, so that the contact of the insulating material and oxygen is prevented, and the overflow of combustible gas is inhibited, and an excellent flame retardant effect is achieved.
Description
Technical Field
The invention belongs to the technical field of insulating materials, and particularly relates to a fluorosilicone rubber flame-retardant heat-conducting high-voltage insulating color code material and a manufacturing process thereof.
Background
At present, the main domestic epoxy resin materials for insulating filling and sealing of high-voltage electric appliances have the main advantages of high mechanical strength, good insulating property and low cost, but the epoxy resin has a high cross-linked structure, so that the defects of brittle quality, easy fatigue, poor heat resistance, poor toughness and the like exist. In practice, the defects of easy cracking, easy brittle failure, ultraviolet ray resistance, easy aging and the like are found, so that high-voltage equipment in operation is affected with damp and water, and insulation is gradually or suddenly lost to cause a malignant accident.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention aims to solve the problems of flame retardance and poor heat resistance of the existing insulating material.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention relates to a fluorosilicone rubber flame-retardant heat-conducting high-voltage insulation color code material which comprises silicone resin, liquid silicone rubber, a cross-linking agent and a catalyst, wherein the ratio of the silicone resin to the liquid silicone rubber is (10: 1) - (5): the catalyst comprises 1, 2-10% of a cross-linking agent by mass, 0.2-5% of a catalyst by mass, 5-20% of white carbon black by mass, 10-30% of aluminum hydroxide by mass, and 1: 4-1: 3 by mass.
Preferably, the coating also comprises 1-10% of coupling agent and 20-40% of regulator in percentage by mass of the total mass.
Preferably, the cross-linking agent is a hexachlorocyclotriphosphazene modifier and a hydrolysis condensation product thereof, and the catalyst is dibutyltin dilaurate.
Preferably, the coupling agent is KH550 or KH560, and the regulator is solvent oil.
Preferably, the pigment also comprises titanium dioxide, iron oxide red or black carbon.
A manufacturing process of a fluorosilicone rubber flame-retardant heat-conducting high-voltage insulation color code material comprises the steps of firstly carrying out modification treatment on silicone resin, then carrying out vacuum high-temperature kneading on the silicone resin and liquid silicone rubber to obtain a sizing material, cooling the sizing material, then grinding the sizing material to obtain a sizing material A and a sizing material B, adding a regulator into the sizing material A, sealing the sizing material A to isolate air, stirring the sizing material A, adding a crosslinking agent, filling nitrogen to protect grinding to obtain a material A, adding a regulator into the sizing material B, sealing the sizing material B to isolate air, stirring the sizing material B, adding a catalyst and a coupling agent, filling nitrogen to protect grinding to obtain a material B, and mixing the material.
Preferably, the modification treatment of the silicone resin is to place the silicone resin and the liquid silicone rubber in a ratio of 10:1 into a closed container, stir and preheat the silicone resin and the liquid silicone rubber, inject deionized water accounting for 0.1% of the mass of the liquid silicone rubber and a catalyst accounting for 0.001% of the mass of the liquid silicone rubber when the silicone resin and the liquid silicone rubber are heated to 80 ℃, continue stirring at 95 ℃ for 2-3 hours, and stop stirring to obtain the modified silicone resin.
Preferably, the vacuum high-temperature kneading is specifically that liquid silicone rubber and modified silicone resin are added into a kneader according to the mass ratio of 5:1, then the liquid silicone rubber and the modified silicone resin are added for 2 times, after the white carbon black is added for the first time, the upper cover of the equipment is closed, the kneader is started, the temperature is adjusted to 150 ℃, the kneader is stopped after 10 minutes, then the upper cover of the equipment is opened, the white carbon black is added for the second time, the upper cover of the equipment is closed, the kneader is started, the kneader is stopped after 10 minutes, aluminum hydroxide powder is added, the upper cover of the equipment is closed, the kneader is started, the kneaded rubber material is taken out.
Preferably, the material A and the material B are mixed according to a mass ratio of 1: 1 mixing to obtain the insulating material.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
the invention relates to a fluorosilicone rubber flame-retardant heat-conducting high-voltage insulation color code material which comprises silicone resin, liquid silicone rubber, a cross-linking agent and a catalyst, wherein the ratio of the silicone resin to the liquid silicone rubber is (10: 1) - (5): 1, the mass of the cross-linking agent accounts for 2-10% of the total mass, the mass of the catalyst accounts for 0.2-5% of the total mass, the catalyst further comprises white carbon black and aluminum hydroxide powder, the mass of the white carbon black accounts for 5-20% of the total mass, the mass of the aluminum hydroxide powder accounts for 10-30% of the total mass, the mass ratio of the white carbon black to the aluminum hydroxide powder is 1: 4-1: 3, the bromine content of decabromodiphenylethane is matched with the content of the aluminum hydroxide, so that when combustion occurs, decabromodiphenylethane and the aluminum hydroxide are subjected to thermal decomposition simultaneously, the aluminum hydroxide reacts at 250-300 ℃, decabromodiphenylethane reacts at a temperature higher than 315 ℃, the aluminum hydroxide reacts for flame retardation, the heating rate of decabromodiphenylethane is reduced, and the final decomposition temperature of a reactant is greatly lagged due to the temperature hysteresis effect of heat conduction, the hard covering generated by the decomposition of the decabromodiphenylethane is mixed with the protective layer of the insulating material carbide caused by the aluminum hydroxide to wrap the surface of the insulating material, so that the insulating material is prevented from contacting with oxygen, meanwhile, the overflow of combustible gas is inhibited, and an excellent flame retardant effect is achieved.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below by way of examples.
Example 1
The fluorosilicone rubber flame-retardant heat-conducting high-voltage insulation color code material comprises silicone resin, liquid silicone rubber, a cross-linking agent and a catalyst, wherein the ratio of the silicone resin to the liquid silicone rubber is (10: 1) - (5): 1, the mass percentage of the cross-linking agent in the total mass is 2-10%, and the mass percentage of the catalyst in the total mass is 0.2-5%.
The composite material also comprises 1-10% of coupling agent and 20-40% of regulator in percentage by mass.
The composite material also comprises white carbon black and aluminum hydroxide powder, wherein the white carbon black accounts for 5-20% of the total mass, the aluminum hydroxide powder accounts for 10-30% of the total mass, and the mass ratio of the white carbon black to the aluminum hydroxide powder is 1: 4-1: 3.
The cross-linking agent is a hexachlorocyclotriphosphazene modifier and a hydrolysis condensation product thereof, and the catalyst is dibutyltin dilaurate.
The coupling agent is KH550 or KH560, and the regulator is solvent oil.
The paint also comprises pigment which is titanium dioxide, iron oxide red or black carbon black.
A manufacturing process of a fluorosilicone rubber flame-retardant heat-conducting high-voltage insulation color code material comprises the steps of firstly carrying out modification treatment on silicone resin, then carrying out vacuum high-temperature kneading on the silicone resin and liquid silicone rubber to obtain a sizing material, cooling the sizing material, then grinding the sizing material to obtain a sizing material A and a sizing material B, adding a regulator into the sizing material A, sealing the sizing material A to isolate air, stirring the sizing material A, adding a crosslinking agent, filling nitrogen to protect grinding to obtain a material A, adding a regulator into the sizing material B, sealing the sizing material B to isolate air, stirring the sizing material B, adding a catalyst and a coupling agent, filling nitrogen to protect grinding to obtain a material B, and mixing the material. The modification treatment of the silicone resin is specifically that the silicone resin and liquid silicone rubber are placed into a closed container according to the proportion of 10:1, stirred and preheated, when the mixture is heated to 80 ℃, deionized water accounting for 0.1 percent of the mass of the liquid silicone rubber and a catalyst accounting for 0.001 percent of the mass of the liquid silicone rubber are injected, the mixture is continuously stirred at 95 ℃ for 2-3 hours to react, and then the stirring is stopped to obtain the modified silicone resin. The vacuum high-temperature kneading is specifically that liquid silicone rubber and modified silicone resin are added into a kneader according to the mass ratio of 5:1, then the liquid silicone rubber and the modified silicone resin are added for 2 times, after half of white carbon black is added for the first time, the upper cover of the equipment is closed, the kneader is started, the temperature is adjusted to 150 ℃, the machine is stopped after 10 minutes, then the upper cover of the equipment is opened, the remaining half of white carbon black is added for the second time, the upper cover of the equipment is closed, the kneader is started, the machine is stopped after 10 minutes, aluminum hydroxide powder is added, the upper cover of the equipment is closed, the kneader is started, the kneaded rubber material is taken. The material A and the material B are mixed according to the mass ratio of 1: 1 mixing to obtain the insulating material.
In the embodiment, the white carbon black with the molecular formula of Sio2 is fumed silica, has good reinforcing effect on synthetic rubber and has excellent performance. Meanwhile, the aluminum hydroxide powder is added into the raw materials, so that the flame retardance of the insulating material can be increased, when the insulating material is burnt, the temperature of the insulating material can be increased, the aluminum hydroxide is heated and decomposed to release water vapor, the combustible gas generated by the heat of the insulating material is diluted, the content of oxygen is reduced, and the burning speed of the insulating material is slowed down. In addition, the aluminum hydroxide absorbs heat to reduce the temperature through dehydration and decomposition, so that the insulating material cannot be combusted fully, carbides can be formed through insufficient combustion, the carbides are accumulated on the surface of the insulating material to form an insulating material carbide protective layer, the insulating material is prevented from contacting with oxygen, meanwhile, the overflow of combustible gas is inhibited, and an excellent flame retardant effect is achieved.
The mass of the aluminum hydroxide powder in the embodiment is 10-30% of the total mass, preferably 20%, when the mass of the aluminum hydroxide powder is 20% of the total mass, the aluminum hydroxide is mixed with decabromodiphenylethane in the fluorosilicone rubber for use, the bromine content of the decabromodiphenylethane is matched with the content of the aluminum hydroxide, so that when combustion occurs, the decabromodiphenylethane and the aluminum hydroxide are subjected to thermal decomposition simultaneously, the aluminum hydroxide is subjected to reaction at 250-300 ℃, the decabromodiphenylethane is subjected to reaction at a temperature higher than 315 ℃, the aluminum hydroxide is subjected to reaction and flame retardance firstly, the heating rate of the decabromodiphenylethane is reduced, the final decomposition temperature of a reactant is greatly delayed due to the temperature hysteresis effect generated by heat conduction, a hard covering generated by the decomposition of the decabromodiphenylethane is mixed with an insulating material carbide protective layer caused by the aluminum hydroxide to wrap the surface of the insulating material, the insulating material is prevented from contacting with oxygen, meanwhile, the overflow of combustible gas is inhibited, and an excellent flame-retardant effect is achieved.
The above-mentioned embodiments only express a certain implementation mode of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention; it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which are within the protection scope of the present invention; therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. The fluorosilicone rubber flame-retardant heat-conducting high-voltage insulation color code material is characterized by comprising silicone resin, liquid silicone rubber, a cross-linking agent and a catalyst, wherein the ratio of the silicone resin to the liquid silicone rubber is (10: 1) - (5): the catalyst comprises 1, 2-10% of a cross-linking agent by mass, 0.2-5% of a catalyst by mass, 5-20% of white carbon black by mass, 10-30% of aluminum hydroxide by mass, and 1: 4-1: 3 by mass.
2. The fluorosilicone rubber flame-retardant heat-conducting high-voltage insulation color code material as claimed in claim 1, wherein: the composite material also comprises 1-10% of coupling agent and 20-40% of regulator in percentage by mass.
3. The fluorosilicone rubber flame-retardant heat-conducting high-voltage insulation color code material as claimed in claim 1, wherein: the cross-linking agent is a hexachlorocyclotriphosphazene modifier and a hydrolysis condensation product thereof, and the catalyst is dibutyltin dilaurate.
4. The fluorosilicone rubber flame-retardant heat-conducting high-voltage insulation color code material as claimed in claim 2, wherein: the coupling agent is KH550 or KH560, and the regulator is solvent oil.
5. The fluorosilicone rubber flame-retardant heat-conducting high-voltage insulation color code material according to claim 3, wherein: the paint also comprises pigment which is titanium dioxide, iron oxide red or black carbon black.
6. A manufacturing process of a fluorosilicone rubber flame-retardant heat-conducting high-voltage insulation color code material is characterized by comprising the following steps of: modifying silicon resin, kneading the modified silicon resin and liquid silicon rubber at high temperature in vacuum to obtain a sizing material, cooling the sizing material, grinding the sizing material to obtain a sizing material A and a sizing material B, adding a regulator into the sizing material A, sealing the sizing material A to isolate air, stirring, adding a cross-linking agent, filling nitrogen to protect and grind to obtain a material A, adding a regulator into the sizing material B, sealing the sizing material B to isolate air, stirring, adding a catalyst and a coupling agent, filling nitrogen to protect and grind to obtain a material B, and mixing the material A and the material B to obtain the insulating material.
7. The manufacturing process of the fluorosilicone rubber flame-retardant heat-conducting high-voltage insulation color code material according to claim 6, characterized in that: the modification treatment of the silicone resin is specifically that the silicone resin and liquid silicone rubber are placed into a closed container according to the proportion of 10:1, stirred and preheated, when the mixture is heated to 80 ℃, deionized water accounting for 0.1 percent of the mass of the liquid silicone rubber and a catalyst accounting for 0.001 percent of the mass of the liquid silicone rubber are injected, the mixture is continuously stirred at 95 ℃ for 2-3 hours to react, and then the stirring is stopped to obtain the modified silicone resin.
8. The manufacturing process of the fluorosilicone rubber flame-retardant heat-conducting high-voltage insulation color code material according to claim 6, characterized in that: the vacuum high-temperature kneading is specifically that liquid silicone rubber and modified silicone resin are added into a kneader according to the mass ratio of 5:1, then the liquid silicone rubber and the modified silicone resin are added for 2 times, the upper cover of equipment is closed after the white carbon black is added for the first time, the kneader is started, the temperature is adjusted to 150 ℃, the machine is stopped after 10 minutes, then the upper cover of the equipment is opened, the white carbon black is added for the second time, the upper cover of the equipment is closed, the kneader is started, the machine is stopped after 10 minutes, aluminum hydroxide powder is added, the upper cover of the equipment is closed, the kneader is started, the kneaded rubber material is taken out after.
9. The manufacturing process of the fluorosilicone rubber flame-retardant heat-conducting high-voltage insulation color code material according to claim 6, characterized in that: the material A and the material B are mixed according to the mass ratio of 1: 1 mixing to obtain the insulating material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010093713.2A CN111286197A (en) | 2020-02-14 | 2020-02-14 | Fluorosilicone rubber flame-retardant heat-conducting high-voltage insulation color code material and manufacturing process thereof |
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| CN202010093713.2A CN111286197A (en) | 2020-02-14 | 2020-02-14 | Fluorosilicone rubber flame-retardant heat-conducting high-voltage insulation color code material and manufacturing process thereof |
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2020
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| WO2017070893A1 (en) * | 2015-10-29 | 2017-05-04 | 国家纳米科学中心 | Ceramic silicone rubber, preparation method and use thereof |
| CN105244098A (en) * | 2015-11-19 | 2016-01-13 | 国家电网公司 | Cold-resistant anti-oxidation flame-retardant cable |
| CN105427953A (en) * | 2015-11-19 | 2016-03-23 | 国家电网公司 | Cold-resistant flame-retardant rat-proof and termite-proof communication cable |
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