CN112280303A - External insulation curing material for live working robot and preparation method thereof - Google Patents
External insulation curing material for live working robot and preparation method thereof Download PDFInfo
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Abstract
The invention discloses an external insulation curing material for a live working robot and a preparation method thereof, wherein the external insulation curing material comprises the following components: 60-180 parts of a main film forming material, 7-30 parts of a reinforcing material, 2-15 parts of a heat conducting filler, 15-50 parts of a flame retardant, 0-10 parts of a pigment, 1-15 parts of an adhesion promoter, 4-15 parts of a curing agent, 0.1-3 parts of a catalyst, 0-1 part of an antioxidant and 0-2 parts of an ultraviolet absorber; wherein the main film forming material is a mixture of alkoxy-terminated polysiloxane and methyl vinyl trifluoropropyl siloxane, and the curing agent is at least one of methyl trimethoxy silane, methyl triethoxy silane, vinyl trimethoxy silane and vinyl triethoxy silane. The external insulation curing material adopts the polysiloxane-based adhesive with the alkoxy end capping, the obtained coating material can be stably stored for a long time, and meanwhile, a small amount of fluorosilicone rubber is added into the main film forming material, so that better weather resistance and corrosion resistance are realized with a small amount of usage and low cost.
Description
Technical Field
The invention relates to an external insulation curing material for a live working robot and a preparation method thereof, belonging to the technical field of electric external insulation protection.
Background
In China, a considerable part of power transmission depends on an overhead bare conductor. China is wide in territory and complex in line environment, and the traditional overhead bare conductor is away from buildings or trees and often faces some problems of lightning strike lines, short circuit grounding, engineering operation electric shock, line corrosion, fishing electric shock and the like, so that the safety and stability of power supply are reduced. The insulated conductor replaces a bare conductor, which is a new target for building urban power distribution networks. The insulation transformation of the existing overhead bare conductor has huge social and economic values. The coated insulating material constructed on line becomes the main direction for insulating and transforming the interfaces of the overhead lines and the wires.
After the live working robot finishes the work of wiring and the like, the exposed surface needs to be subjected to insulation transformation, which puts forward requirements on an insulation material and meets the performances of online construction, room-temperature rapid curing, aging resistance, wear resistance, corrosion resistance, heat conduction and the like. The room temperature curing silicone rubber meeting the requirements and used for the live working robot at present is less, and the deacidification type room temperature vulcanized silicone rubber has pungent smell, is corrosive to metal and cannot be used for external insulation of a metal wire; the deoximated room temperature vulcanized silicone rubber is corrosive to brass and has a problem of pungent odor, and the application range is limited. The one-component dealcoholized room temperature curing silicone rubber of the general formulation has two main disadvantages: (1) the storage stability is poor, the performance is reduced after long-term storage, the difference between the performance and the curing speed in the initial preparation stage is large, even the thixotropy is deteriorated or the sizing material is structured, the extrusion is difficult, the storage is sensitive to the environmental temperature, and the storage temperature is generally not more than 20 ℃ for prolonging the storage time; this is mainly because the blocked hydroxyl groups react with the crosslinker during storage, resulting in partial curing. (2) After long-time outdoor operation, the surface can be aged and peeled and cracked, and the weather resistance is poor.
The fluorosilicone rubber is prepared by introducing C-F into the side chain of silicone rubber3The group has lower surface energy and better oil resistance, corrosion resistance and weather resistance compared with silicon rubber. But because the preparation cost is high, the market price is about ten times of that of the common silicon rubber, and the application range of the silicon rubber is limited.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the problems of poor storage stability, poor corrosion resistance and weather resistance and the like of dealcoholized room temperature curing silicone rubber used by the existing live working robot, the invention provides an external insulation curing material for the live working robot, which is stable in storage, weather resistant and corrosion resistant; in addition, the invention also provides a preparation method of the external insulation curing material.
The technical scheme is as follows: the invention relates to an external insulation curing material for a live working robot, which comprises the following components in parts by weight: 60-180 parts of a main film forming material, 7-30 parts of a reinforcing material, 2-15 parts of a heat conducting filler, 15-50 parts of a flame retardant, 0-10 parts of a pigment, 4-15 parts of a curing agent, 1-15 parts of an adhesion promoter, 0.1-3 parts of a catalyst, 0-1 part of an antioxidant and 0-2 parts of an ultraviolet absorber; wherein the main film forming material is a mixture of alkoxy-terminated polysiloxane and methyl vinyl trifluoropropyl siloxane, and the curing agent is at least one of methyl trimethoxy silane, methyl triethoxy silane, vinyl trimethoxy silane and vinyl triethoxy silane.
Preferably, the external insulation curing material of the invention comprises the following components in percentage by weight: 80-150 parts of a main film forming material, 10-25 parts of a reinforcing material, 5-15 parts of a heat conducting filler, 20-40 parts of a flame retardant, 0-10 parts of a pigment, 6-12 parts of a curing agent, 3-12 parts of an adhesion promoter, 0.2-2 parts of a catalyst, 0.2-0.8 part of an antioxidant and 0.5-1.5 parts of an ultraviolet absorber.
Wherein in the main film forming material, the mass percentage of the methylvinyl trifluoropropylsiloxane is preferably 5-20%; the viscosity of the alkoxy-terminated polysiloxane and the methylvinyltrifluoropropylsiloxane is preferably 5000-100000 cs.
In the external insulation curing material, the reinforcing material can be white carbon black with the particle size of 5 nm-50 mu m; the heat conducting filler can be one or more of aluminum oxide, aluminum nitride, zinc oxide, magnesium oxide, boron nitride and silicon carbide; the flame retardant can be at least one of aluminum hydroxide, magnesium hydroxide, melamine, ammonium polyphosphate, pentabromoethyl benzene, zinc borate and antimony trioxide. The pigment can be one of carbon black, iron oxide red and titanium dioxide. The adhesion promoter can be at least one of gamma-aminopropyltriethoxysilane, gamma- (2, 3-epoxypropoxy) propyltrimethoxysilane and gamma-aminoethylaminopropyltrimethoxysilane; the catalyst can be at least one of dibutyltin dilaurate, stannous octoate and titanate.
Further, the antioxidant can be at least one of dilauryl thiodipropionate and pentaerythritol tetrakis (beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate); the ultraviolet absorbent can be at least one of 2-hydroxy-4-methoxybenzophenone and benzotriazole.
The invention relates to a preparation method of an external insulation curing material for an electrified operating robot, which comprises the following steps:
(1) fully mixing alkoxy-terminated polysiloxane and methylvinyl trifluoropropylsiloxane by using a planetary stirrer under a vacuum condition to obtain a main film-forming material; then adding the reinforcing material, the heat-conducting filler, the flame retardant and the pigment into the main film forming material, and fully mixing under a vacuum condition to obtain a primary mixed glue;
(2) grinding the primarily mixed glue obtained in the step (1) by a roller to obtain uniform base glue;
(3) cooling the base adhesive, strongly dispersing, adding the curing agent, the adhesion promoter and the catalyst under vacuum stirring, fully mixing and stirring, and discharging to obtain the adhesive; wherein, the antioxidant and the ultraviolet absorbent are added when the primary mixed rubber is prepared in the step (1) or added in the step (3).
Preferably, in the step (1), the sufficient mixing under vacuum condition means sufficient mixing under a vacuum degree of 0.04MPa or less.
Further, in the step (3), the degree of vacuum is maintained at 0.04MPa or less during the stirring.
Has the advantages that: compared with the prior art, the invention has the advantages that: (1) according to the invention, alkoxy-terminated polysiloxane is used as a base adhesive, the obtained external insulation curing material can be rapidly cured in an outdoor environment, the storage is stable, and the problem of poor storage stability of the existing dealcoholization type room temperature curing silicone rubber is solved; moreover, the by-product generated by curing the coating material is micromolecular alcohol, has no pungent smell, and is green and environment-friendly; (2) the invention adds a small amount of fluorosilicone rubber in the main film forming material, thus improving the aging resistance, corrosion resistance and electric breakdown resistance of the coating material, and compared with single fluorosilicone rubber, the invention realizes better aging resistance and corrosion resistance with a small amount of usage through the synergistic effect between fluorosilicone rubber and other components, and the cost of the coating material is greatly reduced under the same weather resistance; (3) according to the preparation method, the main film forming matter and other raw materials are mixed step by step to prepare the primary mixed glue, the homogeneity of the main film forming matter is improved through premixing, the homogeneity of the primary mixed glue is further improved, and the mechanical property of the curing material is finally improved.
Detailed Description
The technical solution of the present invention is further explained below.
Example 1
An external insulation curing material for an electrified operation robot comprises the following components in parts by weight: 57 parts of alkoxy-terminated methyl ethyl polysiloxane with the viscosity of 100000cs, 3 parts of methyl vinyl trifluoropropyl siloxane with the viscosity of 100000cs, 7 parts of 50-micron white carbon black, 2 parts of aluminum nitride, 15 parts of aluminum hydroxide, 1 part of gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane, 4 parts of methyl trimethoxy silane and 0.1 part of dibutyltin dilaurate.
The external insulation curing material for the live working robot is prepared by the following preparation method:
(1) premixing base rubber: adding alkoxy-terminated methyl ethyl polysiloxane and methyl vinyl trifluoropropyl siloxane into a kneader, vacuumizing to 0.04MPa, and fully mixing by using a planetary stirrer to obtain a main film-forming substance; then adding the white carbon black, the aluminum nitride and the aluminum hydroxide into the main film forming material, and fully mixing the mixture under the condition that the vacuum degree is kept at 0.04MPa to obtain a primary mixed rubber;
(2) passing the primarily mixed glue obtained in the step (1) through a three-roll grinder to prepare uniform base glue;
(3) and (3) cooling the base adhesive obtained in the step (2), transferring the base adhesive into a powerful dispersion machine, adding methyltrimethoxysilane, gamma- (2, 3-epoxy propoxy) propyl trimethoxysilane and dibutyltin dilaurate, keeping the vacuum degree at 0.04MPa, fully mixing and stirring, and discharging to obtain the adhesive.
Example 2
An external insulation curing material for an electrified operation robot comprises the following components in parts by weight: 144 parts of alkoxy end-capped polydimethylsiloxane with the viscosity of 5000cs, 36 parts of methyl vinyl trifluoropropyl siloxane with the viscosity of 5000cs, 30 parts of white carbon black with the particle size of 5nm, 15 parts of boron nitride, 50 parts of aluminum hydroxide, 10 parts of carbon black, 15 parts of gamma-aminoethyl aminopropyl trimethoxy silane, 15 parts of methyl triethoxysilane, 3 parts of stannous octoate, 1 part of dilauryl thiodipropionate and 2 parts of 2-hydroxy-4-methoxybenzophenone.
The external insulation curing material for the live working robot is prepared by the following preparation method:
(1) premixing base rubber: adding alkoxy-terminated polydimethylsiloxane and methyl vinyl trifluoropropyl siloxane into a kneader, vacuumizing to 0.03MPa, and fully mixing by using a planetary stirrer to obtain a main film-forming substance; then adding the white carbon black, the boron nitride, the aluminum hydroxide and the carbon black into the main film forming material, and fully mixing the mixture under the condition that the vacuum degree is kept at 0.03MPa to obtain a primary mixed rubber;
(2) passing the primarily mixed glue obtained in the step (1) through a three-roll grinder to prepare uniform base glue;
(3) cooling the base adhesive obtained in the step (2), transferring the base adhesive into a powerful dispersion machine, adding gamma-aminoethyl aminopropyl trimethoxy silane, methyl triethoxy silane, stannous octoate, dilauryl thiodipropionate and 2-hydroxy-4-methoxybenzophenone, keeping the vacuum degree at 0.03MPa, fully mixing and stirring, and discharging.
Example 3
An external insulation curing material for an electrified operation robot comprises the following components in parts by weight: 70 parts of alkoxy-terminated polydimethylsiloxane with the viscosity of 80000cs, 10 parts of methylvinyl trifluoropropylsiloxane with the viscosity of 5000cs, 10 parts of 1-micron white carbon black, 5 parts of boron nitride, 20 parts of magnesium hydroxide, 6 parts of methyltrimethoxysilane, 3 parts of gamma-aminoethyl aminopropyltrimethoxysilane, 0.2 part of dibutyltin dilaurate, 0.2 part of dilauryl thiodipropionate and 0.5 part of 2-hydroxy-4-methoxybenzophenone.
The external insulation curing material for the live working robot is prepared by the following preparation method:
(1) premixing base rubber: adding alkoxy-terminated polydimethylsiloxane and methyl vinyl trifluoropropyl siloxane into a kneader, vacuumizing to 0.02MPa, and fully mixing by using a planetary stirrer to obtain a main film-forming substance; then adding white carbon black, boron nitride, magnesium hydroxide, dilauryl thiodipropionate and 2-hydroxy-4-methoxybenzophenone into the main film-forming material, and fully mixing while keeping the vacuum degree at 0.02MPa to obtain a primary mixed rubber;
(2) passing the primarily mixed glue obtained in the step (1) through a three-roll grinder to prepare uniform base glue;
(3) and (3) cooling the base adhesive obtained in the step (2), transferring the base adhesive into a powerful dispersion machine, adding methyltrimethoxysilane, gamma-aminoethyl aminopropyltrimethoxysilane and dibutyltin dilaurate under high-speed stirring, keeping the vacuum degree at 0.02MPa, fully mixing and stirring, and discharging.
Example 4
An external insulation curing material for an electrified operation robot comprises the following components in parts by weight: 135 parts of alkoxy end-capped polydimethylsiloxane with the viscosity of 40000cs, 15 parts of methyl vinyl trifluoropropyl siloxane with the viscosity of 40000cs, 25 parts of 3-micron white carbon black, 5 parts of magnesium oxide, 10 parts of silicon carbide, 40 parts of magnesium hydroxide, 10 parts of carbon black, 12 parts of methyl trimethoxy silane, 10 parts of gamma- (2, 3-epoxy propoxy) propyl trimethoxy silane, 2 parts of gamma-aminoethyl aminopropyl trimethoxy silane, 2 parts of dibutyltin dilaurate, 0.8 part of tetra (beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid) pentaerythritol ester and 1.5 parts of 2-hydroxy-4-methoxybenzophenone.
The external insulation curing material for the live working robot is prepared by the following preparation method:
(1) premixing base rubber: adding alkoxy-terminated polydimethylsiloxane and methyl vinyl trifluoropropyl siloxane into a kneader, vacuumizing to 0.02MPa, and fully mixing by using a planetary stirrer to obtain a main film-forming substance; then adding white carbon black, magnesium oxide, silicon carbide, magnesium hydroxide, carbon black, pentaerythritol tetrakis (beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate) and 2-hydroxy-4-methoxybenzophenone into the main film forming material, and fully mixing under the condition that the vacuum degree is kept at 0.02MPa to obtain a primary mixed rubber;
(2) passing the primarily mixed glue obtained in the step (1) through a three-roll grinder to prepare uniform base glue;
(3) and (3) cooling the base adhesive obtained in the step (2), transferring the base adhesive into a powerful dispersion machine, adding methyltrimethoxysilane, gamma-aminoethyl aminopropyltrimethoxysilane and dibutyltin dilaurate under high-speed stirring, keeping the vacuum degree at 0.02MPa, fully mixing and stirring, and discharging.
Example 5
An external insulation curing material for an electrified operation robot comprises the following components in parts by weight: 90 parts of alkoxy-terminated polydimethylsiloxane with the viscosity of 20000cs, 10 parts of methyl vinyl trifluoropropyl siloxane with the viscosity of 20000cs, 15 parts of 10-micron white carbon black, 5 parts of silicon carbide, 5 parts of magnesium oxide, 30 parts of magnesium hydroxide, 5 parts of carbon black, 8 parts of methyl trimethoxy silane, 6 parts of gamma- (2, 3-epoxy propoxy) propyl trimethoxy silane, 4 parts of gamma-aminoethyl aminopropyl trimethoxy silane, 0.5 part of dibutyltin dilaurate, 0.5 part of tetra (beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid) pentaerythritol ester and 1 part of 2-hydroxy-4-methoxybenzophenone.
The external insulation curing material for the live working robot is prepared by the following preparation method:
(1) premixing base rubber: adding alkoxy-terminated polydimethylsiloxane and methyl vinyl trifluoropropyl siloxane into a kneader, vacuumizing to 0.01MPa, and fully mixing by using a planetary stirrer to obtain a main film-forming substance; then adding white carbon black, silicon carbide, magnesium oxide, magnesium hydroxide, carbon black, pentaerythritol tetrakis (beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate) and 2-hydroxy-4-methoxybenzophenone into the main film forming material, and fully mixing under the condition that the vacuum degree is kept at 0.01MPa to obtain a primary mixed rubber;
(2) passing the primarily mixed glue obtained in the step (1) through a three-roll grinder to prepare uniform base glue;
(3) and (3) cooling the base adhesive obtained in the step (2), transferring the base adhesive into a powerful dispersion machine, adding methyltrimethoxysilane, gamma- (2, 3-epoxypropoxy) propyl trimethoxysilane, gamma-aminoethyl aminopropyl trimethoxysilane and dibutyltin dilaurate under high-speed stirring, keeping the vacuum degree at 0.01MPa, fully mixing and stirring, and discharging.
Comparative example 1
An external insulation curing material comprises the following components in parts by weight: 100 parts of hydroxyl-terminated polydimethylsiloxane with viscosity of 20000cs, 15 parts of 10-micron white carbon black, 5 parts of magnesium oxide, 5 parts of silicon carbide, 30 parts of magnesium hydroxide, 5 parts of carbon black, 8 parts of methyltrimethoxysilane, 6 parts of gamma- (2, 3-epoxypropoxy) propyl trimethoxysilane, 4 parts of gamma-aminoethyl aminopropyltrimethoxysilane, 0.5 part of dibutyltin dilaurate, 0.5 part of tetra (beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid) pentaerythritol ester and 1 part of 2-hydroxy-4-methoxybenzophenone.
The external insulation curing material is prepared by the following preparation method:
(1) premixing base rubber: adding hydroxyl-terminated dimethyl polysiloxane, white carbon black, silicon carbide, magnesium oxide, magnesium hydroxide, carbon black, pentaerythritol tetrakis (beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate) and 2-hydroxy-4-methoxybenzophenone into a kneader, vacuumizing to 0.01MP, and fully mixing to obtain a primary mixed adhesive;
(2) passing the primarily mixed glue obtained in the step (1) through a three-roll grinder to prepare uniform base glue;
(3) and (3) cooling the base adhesive obtained in the step (2), transferring the base adhesive into a powerful dispersion machine, adding methyltrimethoxysilane, gamma- (2, 3-epoxypropoxy) propyl trimethoxysilane, gamma-aminoethyl aminopropyl trimethoxysilane and dibutyltin dilaurate under high-speed stirring, keeping the vacuum degree at 0.01MPa, fully mixing and stirring, and discharging.
Comparative example 2
An external insulation curing material comprises the following components in parts by weight: 100 parts of alkoxy-terminated polydimethylsiloxane with the viscosity of 20000cs, 15 parts of 10-micron white carbon black, 5 parts of magnesium oxide, 5 parts of silicon carbide, 30 parts of magnesium hydroxide, 5 parts of carbon black, 8 parts of methyltrimethoxysilane, 6 parts of gamma- (2, 3-epoxypropoxy) propyl trimethoxysilane, 4 parts of gamma-aminoethyl aminopropyltrimethoxysilane, 0.5 part of dibutyltin dilaurate, 0.5 part of tetra (beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid) pentaerythritol ester and 1 part of 2-hydroxy-4-methoxybenzophenone.
The external insulation curing material is prepared by the following preparation method:
(1) premixing base rubber: adding alkoxy-terminated polydimethylsiloxane, white carbon black, silicon carbide, magnesium oxide, magnesium hydroxide, carbon black, pentaerythritol tetrakis (beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate) and 2-hydroxy-4-methoxybenzophenone into a kneader, and vacuumizing to 0.01MP for fully mixing to obtain a primary mixed rubber;
(2) passing the primarily mixed glue obtained in the step (1) through a three-roll grinder to prepare uniform base glue;
(3) and (3) cooling the base adhesive obtained in the step (2), transferring the base adhesive into a powerful dispersion machine, adding methyltrimethoxysilane, gamma- (2, 3-epoxypropoxy) propyl trimethoxysilane, gamma-aminoethyl aminopropyl trimethoxysilane and dibutyltin dilaurate under high-speed stirring, keeping the vacuum degree at 0.01MPa, fully mixing and stirring, and discharging.
Comparative example 3
An external insulation curing material comprises the following components in parts by weight: 100 parts of methylvinyl trifluoropropylsiloxane with the viscosity of 20000cs, 15 parts of 10-micron white carbon black, 5 parts of magnesium oxide, 5 parts of silicon carbide, 30 parts of magnesium hydroxide, 5 parts of carbon black, 8 parts of methyltrimethoxysilane, 6 parts of gamma- (2, 3-epoxypropoxy) propyl trimethoxysilane, 4 parts of gamma-aminoethyl aminopropyltrimethoxysilane, 0.5 part of dibutyltin dilaurate, 0.5 part of tetra (beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid) pentaerythritol ester and 1 part of 2-hydroxy-4-methoxybenzophenone.
The external insulation curing material is prepared by the following preparation method:
(1) premixing base rubber: adding methyl vinyl trifluoropropyl siloxane, white carbon black, silicon carbide, magnesium oxide, magnesium hydroxide, carbon black, tetra (beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid) pentaerythritol ester and 2-hydroxy-4-methoxybenzophenone into a kneader, vacuumizing to 0.01MP, and fully mixing to obtain a primary mixed rubber;
(2) passing the primarily mixed glue obtained in the step (1) through a three-roll grinder to prepare uniform base glue;
(3) and (3) cooling the base adhesive obtained in the step (2), transferring the base adhesive into a powerful dispersion machine, adding methyltrimethoxysilane, gamma- (2, 3-epoxypropoxy) propyl trimethoxysilane, gamma-aminoethyl aminopropyl trimethoxysilane and dibutyltin dilaurate under high-speed stirring, keeping the vacuum degree at 0.01MPa, fully mixing and stirring, and discharging.
The external insulation curing materials prepared in the embodiments 1-5 and the comparative examples 1-3 are respectively prepared into standard sample pieces, and various performances are tested, wherein the tensile strength and the tensile elongation are tested according to GB/T528-2009, the breakdown strength is tested according to GB/T1695-2005, and the weather resistance is tested according to GB/T16422.3.
The test results are shown in table 1 below.
TABLE 1 service Performance parameters of the external insulation curing materials prepared in examples 1-5 and comparative examples 1-3
As can be seen from Table 1, compared with the examples 1-2, the external insulation curing material prepared in the preferable raw material parameter range in the examples 3-5 has higher tensile strength and breakdown strength, and is more beneficial to insulation coating of bare wires and insulation treatment at interfaces. Comparing example 5 with comparative example 1, it can be seen that the external insulation curing material for the charged working robot prepared by the invention using alkoxy-terminated polysiloxane instead of hydroxy-terminated polysiloxane has better storage stability; moreover, compared with the comparative examples 1 and 2, the curing material has higher breakdown resistance, aging resistance and corrosion resistance after the fluororubber is added in the example 5.
In addition, as can be seen from comparison of example 5 with comparative example 3, compared with the pure fluororubber in comparative example 3, the present invention realizes the same excellent aging and corrosion resistance with a very small amount of fluorosilicone rubber usage by the synergistic effect between fluorosilicone rubber and other components, thereby greatly reducing the raw material cost: the price of the fluorosilicone rubber in the market is about 480 yuan/kg, the price of the alkoxy-terminated polydimethylsiloxane is about 48 yuan/kg, 10 kg of base rubber is used for production, the raw material cost of the base rubber in the embodiment 5 is about 912 yuan, and the raw material cost of the base rubber in the comparative example 3 is 4800 yuan, namely the corrosion resistance and the aging resistance of the pure fluororubber are realized by the base rubber price of less than 20% of the fluororubber, and the problem of unstable storage of the pure fluororubber is solved.
Claims (10)
1. The external insulation curing material for the live working robot is characterized by comprising the following components in parts by weight: 60-180 parts of a main film forming material, 7-30 parts of a reinforcing material, 2-15 parts of a heat conducting filler, 15-50 parts of a flame retardant, 0-10 parts of a pigment, 4-15 parts of a curing agent, 1-15 parts of an adhesion promoter, 0.1-3 parts of a catalyst, 0-1 part of an antioxidant and 0-2 parts of an ultraviolet absorber; the main film forming material is a mixture of alkoxy-terminated polysiloxane and methyl vinyl trifluoropropyl siloxane, and the curing agent is at least one of methyl trimethoxy silane, methyl triethoxy silane, vinyl trimethoxy silane and vinyl triethoxy silane.
2. The external insulation curing material for the charged operation robot as claimed in claim 1, which comprises the following components in parts by weight: 80-150 parts of a main film forming material, 10-25 parts of a reinforcing material, 5-15 parts of a heat conducting filler, 20-40 parts of a flame retardant, 0-10 parts of a pigment, 6-12 parts of a curing agent, 3-12 parts of an adhesion promoter, 0.2-2 parts of a catalyst, 0.2-0.8 part of an antioxidant and 0.5-1.5 parts of an ultraviolet absorber.
3. The external insulation curing material for the charged working robot as claimed in claim 1, wherein the mass percentage of the methylvinyltrifluoropropylsiloxane in the main film forming material is 5-20%; the viscosity of the alkoxy-terminated polysiloxane and the methyl vinyl trifluoropropyl siloxane is 5000-100000 cs.
4. The external insulation curing material for the charged working robot as claimed in claim 1, wherein the reinforcing material is white carbon black with a particle size of 5 nm-50 μm; the heat-conducting filler is one or more of aluminum oxide, aluminum nitride, zinc oxide, magnesium oxide, boron nitride and silicon carbide; the flame retardant is at least one of aluminum hydroxide, magnesium hydroxide, melamine, ammonium polyphosphate, pentabromoethyl benzene, zinc borate and antimony trioxide.
5. The exterior insulation curing material for the charged working robot as claimed in claim 1, wherein the pigment is one of carbon black, red iron oxide and titanium dioxide.
6. The external insulation curing material for the charged working robot as claimed in claim 1, wherein the adhesion promoter is at least one of γ -aminopropyltriethoxysilane, γ - (2, 3-epoxypropoxy) propyltrimethoxysilane, γ -aminoethylaminopropyltrimethoxysilane; the catalyst is at least one of dibutyltin dilaurate, stannous octoate and titanate.
7. The exterior insulation curing material for a charged working robot according to claim 1, wherein the antioxidant is at least one of dilauryl thiodipropionate and pentaerythritol tetrakis (β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate), and the ultraviolet absorber is at least one of 2-hydroxy-4-methoxybenzophenone and benzotriazole.
8. The method for preparing the external insulation curing material for the charged operation robot as claimed in claim 1, which comprises the steps of:
(1) fully mixing alkoxy-terminated polysiloxane and methylvinyl trifluoropropylsiloxane by using a planetary stirrer under a vacuum condition to obtain a main film-forming material; then adding the reinforcing material, the heat-conducting filler, the flame retardant and the pigment into the main film forming material, and fully mixing under a vacuum condition to obtain a primary mixed glue;
(2) grinding the primarily mixed glue obtained in the step (1) by a roller to obtain uniform base glue;
(3) cooling the base adhesive, strongly dispersing, adding a curing agent, an adhesion promoter and a catalyst under vacuum stirring, fully mixing and stirring, and discharging to obtain the adhesive;
wherein, the antioxidant and the ultraviolet absorbent are added when the primary mixed rubber is prepared in the step (1) or added in the step (3).
9. The method for preparing an external insulation curing material for a charged working robot according to claim 8, wherein in the step (1), the mixing under vacuum condition is performed sufficiently as follows: the mixture was thoroughly mixed under a vacuum of 0.04MPa or less.
10. The method for preparing an external insulation curing material for a charged working robot according to claim 8, wherein in the step (3), the degree of vacuum is maintained to be 0.04MPa or less during the stirring process.
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| CN202011082951.XA CN112280303A (en) | 2020-10-12 | 2020-10-12 | External insulation curing material for live working robot and preparation method thereof |
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| CN113292922A (en) * | 2021-05-23 | 2021-08-24 | 杨琦慧 | Insulating coating applied to power grid distribution overhead bare conductor and preparation method thereof |
| CN115449293A (en) * | 2022-10-20 | 2022-12-09 | 河南四达检测技术有限公司 | Wire insulating paint for coating electrified insulating coating robot |
| CN116082959A (en) * | 2023-04-07 | 2023-05-09 | 北京超智控信科技有限公司 | Self-curing coating insulating material for electrified railway carrier cable |
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