CN112600137B - Telescopic insulating trapping mechanism - Google Patents
Telescopic insulating trapping mechanism Download PDFInfo
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- CN112600137B CN112600137B CN202011332986.4A CN202011332986A CN112600137B CN 112600137 B CN112600137 B CN 112600137B CN 202011332986 A CN202011332986 A CN 202011332986A CN 112600137 B CN112600137 B CN 112600137B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/14—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for joining or terminating cables
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Abstract
The invention discloses a telescopic insulating wire clamping device, which relates to the technical field of electric power operation auxiliary tools and comprises a sleeve, a movable rod and a clamping device, wherein the movable rod is sleeved in the sleeve and can slide relatively, and the clamping device is fixedly connected with the top end of the movable rod; a trigger mechanism, a transmission mechanism and a locking mechanism which are sequentially connected in a sliding manner are arranged in the movable rod, and a locking opening matched with the locking mechanism is formed in the sleeve wall; the telescopic device is simple in structure and convenient to operate, can quickly realize the extension and retraction of the sleeve and the movable rod by pressing the trigger mechanism during use, is convenient and quick, and can meet different requirements of operators in electric power operation on length.
Description
Technical Field
The invention relates to the technical field of electric power operation auxiliary tools, in particular to a telescopic insulating wire clamping device.
Background
Electric power operation indicates that the uninterrupted power is overhauld, a test method of test on high-voltage electrical equipment, at present, maintenance personal is when maintaining or overhauing the circuit breaker, because the mounted position of the drainage wire clamping end of circuit breaker is higher, consequently need scramble the vase, adopt trapping mechanism to carry out the trapping mechanism with the drainage wire, and present trapping mechanism can't stretch out and draw back, lead to electric power operation operating personnel to have a great deal of inconvenience at the during operation, can't satisfy the work demand, need consume a large amount of operating time, difficult operation and security are relatively poor.
For example, a 10kV insulated wire clamp device disclosed in chinese patent literature, whose publication number CN203895875U discloses a 10kV insulated wire clamp device, which includes a hook, a wire clamp and a screw rod, one end of the screw rod is connected with a hanging ring, the other end passes through a hook base and is fixedly connected with the wire clamp arranged in the hook, one side of the hook is provided with a wire pressing nut, the middle of the wire clamp is provided with a first mounting hole and a second mounting hole, a blade protruding out of the upper surface of the wire clamp is arranged in the first mounting hole, the lower end of the blade is fixed on a top rod, the top rod is connected with a spring, the spring is arranged in the second mounting hole, the upper end of the spring is clamped on a boss of the top rod, and the lower end of the spring is clamped at the bottom of the second mounting hole of the wire clamp. However, the utility model discloses a trapping mechanism is unable flexible, leads to electric power operation operating personnel to have a great deal of inconvenience at the during operation, can't satisfy the work demand, needs consume a large amount of operating time, and difficult operation and security are relatively poor.
Disclosure of Invention
The invention provides a telescopic insulating wire clamping device, which aims to solve the problems that at present, the wire clamping device cannot be stretched, so that electric power operation operators have inconvenience in working, cannot meet working requirements, needs to consume a large amount of operating time, is difficult to operate, has poor safety and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
a telescopic insulating wire clamping device comprises a sleeve, a movable rod and a clamping device, wherein the movable rod is sleeved in the sleeve and can slide relatively, and the clamping device is fixedly connected with the top end of the movable rod; the movable rod is internally provided with a trigger mechanism, a transmission mechanism and a locking mechanism which are sequentially connected in a sliding manner, and the wall of the sleeve is provided with a locking notch matched with the locking mechanism.
The movable rod is arranged in the sleeve so as to realize the telescopic effect of the insulating wire clamping device, when the insulating wire clamping device is used, an electric power operation staff uses the wire clamping device to clamp a lead wire, then when the lead wire needs to be connected with a parallel groove wire clamp on the lead wire, the electric power operation staff can press the trigger mechanism on the movable rod according to actual requirements, at the moment, the trigger mechanism, the transmission mechanism and the locking mechanism are in sliding connection, the transmission mechanism is driven to slide after the trigger mechanism is pressed, the transmission mechanism drives the locking mechanism to retract inwards, the telescopic effect of the movable rod in the sleeve is realized, after the movable rod is stretched to a proper position, the trigger mechanism is released, and at the moment, the locking mechanism is locked with a locking opening on the wall of the sleeve, and the telescopic effect is realized. The telescopic device is simple in structure and convenient to operate, can quickly realize the extension and retraction of the sleeve and the movable rod by pressing the trigger mechanism during use, is convenient and quick, and can meet different requirements of operators in electric power operation on length.
Preferably, the trigger mechanism comprises a trigger sliding cavity, a trigger sliding block and a trigger spring, the trigger sliding block is arranged in the trigger sliding cavity and is connected with the inner wall of the movable rod through the trigger spring, a trigger sliding inclined plane is arranged on the trigger sliding block, and the end part of the trigger sliding block extends out of the movable rod.
Preferably, the locking mechanism comprises a locking sliding cavity, a locking sliding block and a locking spring, the locking sliding block is arranged in the locking sliding cavity and is connected with the inner wall of the movable rod through the locking spring, a locking sliding inclined plane is arranged on the locking sliding block, and the end part of the locking sliding block is a locking block matched with the locking opening.
Preferably, the transmission mechanism comprises a transmission sliding cavity and a transmission sliding block, transmission sliding inclined planes matched with the trigger sliding inclined plane and the lock catch sliding inclined plane are respectively arranged at two end parts of the transmission sliding block, a limiting block is arranged on the side edge of the transmission sliding block, and a limiting cavity matched with the limiting block is arranged on the transmission sliding cavity.
When the trigger mechanism is triggered, the trigger slider is pressed to slide along the trigger sliding cavity, the trigger spring can be compressed at the moment, the trigger sliding inclined plane arranged on the trigger slider can place the transmission sliding inclined plane on the transmission slider to move the transmission slider downwards along the transmission sliding cavity, the distance of the transmission slider can be limited by the limiting cavity and the limiting block, at the moment, the transmission sliding inclined plane at the lower end of the transmission slider moves the lock catch slider inwards along the lock catch sliding cavity through the lock catch sliding inclined plane, the lock catch spring is compressed at the moment, meanwhile, the locking block is separated from the lock opening and shrinks inwards, the movable rod can be stretched at the moment, after the movable rod stretches to a proper position, the trigger mechanism is released, at the moment, the trigger mechanism and the lock catch mechanism can restore to the original positions under the combined force of the trigger spring and the lock catch spring, the locking block is embedded into the lock opening to fix the movable rod, and stretching is completed.
Preferably, clamping device includes the connecting block, decides the clamping jaw, moves the clamping jaw and is used for opening and shutting the device that opens and shuts that moves the clamping jaw, clamping device passes through the connecting block and is connected with the movable rod, decide the clamping jaw and fix and locate the connecting block tip, it passes through torsional spring and connecting block elastic connection to move the clamping jaw.
When using clamping device to carry out the centre gripping to the lead wire, because move the clamping jaw and pass through torsional spring and connecting block elastic connection, consequently under conventional state, move the clamping jaw and decide the clamping jaw closure, when needing to carry out the centre gripping, at first will move the clamping jaw and open through the device that opens and shuts, will move the clamping jaw behind the lead wire and press from both sides the lead wire tight under the elasticity of torsional spring, when needing to loosen, adopt the device that opens and shuts again will move the clamping jaw and pull open can.
Preferably, the opening and closing device comprises an opening and closing block arranged on the side wall of the movable clamping jaw, a rope binding rod arranged on the side wall of the sleeve and a rope used for pulling the opening and closing block to control the opening and closing of the movable clamping jaw.
The opening and closing device controls the opening and closing of the movable clamping jaw through the pulling of the rope, and when the clamping device is not operated, the rope can be tightened on the rope bundling rod.
Preferably, the side wall of the movable rod is provided with a limiting ring.
The limiting ring can limit the telescopic position of the movable rod.
Preferably, the bottom of the sleeve is provided with an anti-slip sleeve.
The anti-slip sleeve can increase friction force and prevent sliding during operation.
Preferably, the bushing is prepared from an anti-aging insulating epoxy resin, and the preparation of the anti-aging insulating epoxy resin comprises the following steps:
(1) placing 1-3 parts of chitosan in 50-100 parts of dimethyl sulfoxide for full swelling, then adding 5-8 parts of p-methoxy cinnamoyl chloride and 0.5-1.5 parts of pyridine, stirring at room temperature for reaction for 20-30h, then precipitating a modified product by using ethanol, performing suction filtration, and drying to prepare modified chitosan;
(2) adding 5-10 parts of ethyl orthosilicate and 1-3 parts of hexadecyl trimethyl ammonium chloride into 120 parts of 40-50wt% ethanol aqueous solution of 100-;
(3) dispersing 2-4 parts of modified chitosan into 1000 parts of 800-1.5 wt% acetic acid aqueous solution, then adding 3-5 parts of mesoporous hollow silica particles, stirring for 40-60h, and filtering to prepare the loaded modified chitosan mesoporous hollow silica particles;
(4) placing the loaded modified chitosan mesoporous hollow silica particles into deionized water, adding 0.1-0.3 part of glyoxal, reacting for 3-4h at 30-35 ℃, and then filtering, washing and drying to obtain the anti-aging silica particles;
(5) placing the anti-aging silica particles in 1-2wt% of gamma-aminopropyltriethoxysilane aqueous solution for reaction for 10-15h to carry out silane modification;
(6) dispersing 1-5 parts of silane modified anti-aging silicon dioxide particles into 100-120 parts of epoxy resin, and then adding 30-80 parts of curing agent for crosslinking and curing to prepare the anti-aging insulating epoxy resin.
The epoxy resin and the curing agent can form a three-dimensional cross-linked solid material after being cured at room temperature or at medium and high temperature, and have good mechanical property and insulating property, so the three-dimensional cross-linked solid material can be used for preparing the bushing of the wire clamping device, however, the wire clamping device is frequently required to be used outdoors, the aging phenomenon is easy to occur in the application process, the material is easy to turn yellow after aging, simultaneously, the impact resistance and other mechanical properties are greatly reduced, and the wire clamping device is easy to crack, not only influences the service life, but also easily causes safety accidents in the use process, so the wire clamping device is required to be subjected to aging resistance modification. During the use process of the wire clamping device, the wire clamping device can be irradiated by sunlight for a long time, and ultraviolet light in the sunlight and oxygen in the air simultaneously act to generate a photooxidation reaction, which can cause the degradation of polymers and the aging of epoxy resin, so that the key for preventing the ultraviolet light from being oxidized is the aging resistance of the epoxy resin.
In the invention, chitosan has excellent ultraviolet light absorption capacity, and in order to further increase the ultraviolet light absorption capacity of the chitosan, methoxy cinnamoyl chloride is modified, after the chitosan is swelled in a dimethyl sulfoxide solvent, under the action of acid-binding agent pyridine, the methoxy cinnamoyl and the chitosan can be subjected to esterification reaction, so that a sulfonyl group is successfully grafted on the chitosan, and the sulfonyl group has strong ultraviolet light absorption capacity, so that the ultraviolet light absorption capacity of the prepared modified chitosan is further increased.
Then, preparing mesoporous hollow silica particles by taking hexadecyl trimethyl ammonium chloride as a template, blending and stirring modified chitosan and the mesoporous hollow silica particles, loading the modified chitosan into the mesoporous hollow silica particles, then carrying out a crosslinking reaction on the modified chitosan loaded into the mesoporous hollow silica particles through the crosslinking action of glyoxal to form a network modified chitosan macromolecular compound with a three-dimensional network structure, preparing to obtain anti-aging silica particles, finally carrying out silane modification on the anti-aging silica particles, blending the anti-aging silica particles with epoxy resin, and carrying out crosslinking curing under the action of a curing agent to obtain the anti-aging insulating epoxy resin.
In the invention, the anti-aging silica particles with a core-shell structure are formed by taking the reticular modified chitosan macromolecular compound with a three-dimensional network structure as a core and taking the mesoporous hollow silica particles as a shell, because when the anti-aging silica particles are applied, although the modified chitosan has good ultraviolet light absorption performance, if the modified chitosan is directly blended with the epoxy resin, a certain ultraviolet light absorption effect can be temporarily achieved to play an anti-aging role, but after long-term use, the modified chitosan is easy to dissolve out, which greatly influences the anti-aging persistence; meanwhile, the direct blending mode can also lead to poor dispersibility of the modified chitosan in the epoxy resin and easily lead to poor local oxidation resistance. The anti-aging silica particles with the core-shell structure are adopted, the mesoporous hollow silica particles are taken as shell layers, the core material reticular modified chitosan high molecular compound can be coated, when the epoxy resin is blended, the mesoporous hollow silica particles of the shell layers are modified by the silane coupling agent and have good dispersibility in the epoxy resin, so that the reticular modified chitosan high molecular compound can be well dispersed in the epoxy resin, meanwhile, the modified chitosan is crosslinked to form a three-dimensional network structure, and after the mesoporous hollow silica particles are coated, the reticular modified chitosan high molecular compound can be prevented from being separated from the mesoporous hollow silica particles, and therefore, the reticular modified chitosan high molecular compound is prevented from being dissolved out of an epoxy resin matrix. When the epoxy resin is applied, the shell mesoporous hollow silica particles can pre-absorb ultraviolet rays, and the core material reticular modified chitosan high molecular compound can further increase the absorption of the ultraviolet rays, prevent the epoxy resin matrix from generating a photo-oxidation reaction, and improve the aging resistance of the epoxy resin.
Preferably, the curing agent is one or more of phthalic anhydride, ethylenediamine or m-xylylenediamine.
Therefore, the invention has the following beneficial effects: the telescopic device is simple in structure and convenient to operate, can quickly realize the extension and retraction of the sleeve and the movable rod by pressing the trigger mechanism during use, is convenient and quick, and can meet different requirements of operators in electric power operation on length.
Drawings
FIG. 1 is a schematic view of a partial cross-sectional structure of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
In the figure: the locking device comprises a sleeve 1, a locking notch 11, an anti-skidding sleeve 12, a movable rod 2, a triggering mechanism 21, a triggering sliding cavity 211, a triggering sliding block 212, a triggering spring 213, a triggering sliding inclined plane 214, a transmission mechanism 22, a transmission sliding cavity 221, a transmission sliding block 222, a transmission sliding inclined plane 223, a limiting block 224, a limiting cavity 225, a locking mechanism 23, a locking sliding cavity 231, a locking sliding block 232, a locking spring 233, a locking sliding inclined plane 234, a locking block 235, a limiting ring 24, a clamping device 3, a connecting block 31, a fixed clamping jaw 32, a movable clamping jaw 33, an opening and closing block 331, a rope binding rod 332, a rope 333, an opening and closing device 34 and a torsion spring 35.
Detailed Description
The invention is further described with reference to specific embodiments.
Example 1: as shown in fig. 1 and 2, a telescopic insulating wire clamping device includes a sleeve 1, a movable rod 2 and a clamping device 3, wherein the movable rod 2 is sleeved in the sleeve 1 and can slide relatively, the clamping device 3 is fixedly connected with the top end of the movable rod 2, the clamping device 3 includes a connecting block 31, a fixed jaw 32, a movable jaw 33 and an opening and closing device 34 for opening and closing the movable jaw 33, the clamping device 3 is connected with the movable rod 2 through the connecting block 31, the fixed jaw 32 is fixedly arranged at the end of the connecting block 31, the movable jaw 33 is elastically connected with the connecting block 31 through a torsion spring 35, the opening and closing device 34 includes an opening and closing block 331 arranged on the side wall of the movable jaw 33, a rope binding rod 332 arranged on the side wall of the sleeve 1 and a rope 333 for pulling the opening and closing block 331 to control the opening and closing of the movable jaw 33; the trigger mechanism 21, the transmission mechanism 22 and the locking mechanism 23 are sequentially connected in a sliding manner and are arranged in the movable rod 2, the trigger mechanism 21 comprises a trigger sliding cavity 211, a trigger sliding block 212 and a trigger spring 213, the trigger sliding block 212 is arranged in the trigger sliding cavity 211 and is connected with the inner wall of the movable rod 2 through the trigger spring 213, a trigger sliding inclined plane 214 is arranged on the trigger sliding block 212, and the end part of the trigger sliding block 212 extends out of the movable rod 2; the transmission mechanism 22 comprises a transmission sliding cavity 221 and a transmission slider 222, wherein transmission sliding inclined planes 223 matched with the trigger sliding inclined plane 214 and the lock catch sliding inclined plane 234 are respectively arranged at two end parts of the transmission slider 222, a limit block 224 is arranged at the side edge of the transmission slider 222, and a limit cavity 225 matched with the limit block 224 is arranged on the transmission sliding cavity 221; the locking mechanism 23 comprises a locking sliding cavity 231, a locking sliding block 232 and a locking spring 233, the locking sliding block 232 is arranged in the locking sliding cavity 231 and is connected with the inner wall of the movable rod 2 through the locking spring 233, the locking sliding block 232 is provided with a locking sliding inclined plane 234, the end part of the locking sliding inclined plane is provided with a locking block 235 matched with the locking opening 11, and the side wall of the movable rod 2 is provided with a limiting ring 24; the wall of the sleeve 1 is provided with a locking notch 11 matched with the locking mechanism 23, and the bottom of the sleeve 1 is provided with an anti-skidding sleeve 12.
When the wire clamping device is used, an electric power operation worker clamps a lead by using the wire clamping device, when the wire is clamped, the rope 333 is firstly used for pulling and controlling the opening and closing of the movable clamping jaw 33, the lead is placed after the movable clamping jaw 33 is opened, then the rope 333 is loosened, and the movable clamping jaw 33 clamps the lead under the elasticity of the torsion spring 35. Subsequently, when the lead needs to be connected with the parallel groove clamp on the lead, an electric power operation staff can press the trigger mechanism 21 on the movable rod 2 according to actual requirements, when the trigger mechanism 21 is triggered, the trigger slider 212 is pressed to slide along the trigger sliding cavity 211, the trigger spring 213 is compressed at this time, the trigger sliding inclined plane 214 arranged on the trigger slider 212 puts the transmission sliding inclined plane 223 on the transmission slider 222 to move the transmission slider 222 downwards along the transmission sliding cavity 221, the spacing cavity 225 is matched with the spacing block 224 to limit the distance of the transmission slider 222, at this time, the transmission sliding inclined plane 223 at the lower end of the transmission slider 222 moves the lock slider 232 inwards along the lock sliding cavity 231 through the lock sliding inclined plane 234, at this time, the lock 233 spring is compressed, and at the same time, the locking block 235 is separated from the lock opening 11 and shrinks inwards, at this time, the movable rod 2 can be stretched, when the telescopic mechanism is stretched to a proper position, the trigger mechanism 21 is released, the trigger mechanism 21 and the latch mechanism 23 can be restored to the original positions under the combined force of the trigger spring 213 and the latch spring 233, and the locking block 235 is embedded into the locking opening 11 to fix the movable rod 2, so that the stretching is completed. Then, the electric power operation staff connects the lead wire with the parallel groove clamp on the lead wire through the insulating wire clamp device, and after the connection is completed, the clamping device 3 is loosened through the opening and closing device 34, so that the connection work of the lead wire is completed.
The sleeve is prepared from anti-aging insulating epoxy resin, and the preparation of the anti-aging insulating epoxy resin comprises the following steps:
(1) placing 2 parts of chitosan into 70 parts of dimethyl sulfoxide for full swelling, then adding 7 parts of p-methoxy cinnamoyl chloride and 1 part of pyridine, stirring and reacting for 25 hours at room temperature, then precipitating a modified product by using ethanol, performing suction filtration, and drying to prepare modified chitosan;
(2) adding 7 parts of ethyl orthosilicate and 2 parts of hexadecyl trimethyl ammonium chloride into 110 parts of 45 wt% ethanol aqueous solution, then adding 17 wt% ammonia water, fully stirring, reacting at 27 ℃ for 23 hours, filtering to obtain precipitate, and calcining at 620 ℃ for 8 hours to prepare mesoporous hollow silica particles;
(3) dispersing 3 parts of modified chitosan into 900 parts of 1.2 wt% acetic acid aqueous solution, then adding 4 parts of mesoporous hollow silica particles, stirring for 50h, and filtering to prepare modified chitosan loaded mesoporous hollow silica particles;
(4) placing the loaded modified chitosan mesoporous hollow silica particles into deionized water, adding 0.2 part of glyoxal, reacting for 3.5h at 33 ℃, and then filtering, washing and drying to obtain the anti-aging silica particles;
(5) placing the anti-aging silicon dioxide particles in 1.5wt% of gamma-aminopropyl triethoxysilane aqueous solution for reaction for 12 hours to carry out silane modification;
(6) dispersing 3 parts of silane-modified anti-aging silicon dioxide particles in 110 parts of epoxy resin, and then adding 50 parts of curing agent for crosslinking and curing to prepare the anti-aging insulating epoxy resin.
Example 2: the difference from the embodiment 1 is that the bushing is prepared from an anti-aging insulating epoxy resin, and the preparation of the anti-aging insulating epoxy resin comprises the following steps:
(1) placing 1 part of chitosan in 50 parts of dimethyl sulfoxide for full swelling, then adding 5 parts of p-methoxy cinnamoyl chloride and 0.5 part of pyridine, stirring at room temperature for reaction for 20 hours, then precipitating a modified product by using ethanol, performing suction filtration, and drying to prepare modified chitosan;
(2) adding 5 parts of ethyl orthosilicate and 1 part of hexadecyl trimethyl ammonium chloride into 100 parts of 40 wt% ethanol aqueous solution, then adding 15 wt% ammonia water, fully stirring, reacting for 25 hours at 25 ℃, filtering to obtain precipitate, and calcining for 9 hours at 600 ℃ to prepare mesoporous hollow silica particles;
(3) dispersing 2 parts of modified chitosan into 800 parts of 1 wt% acetic acid aqueous solution, then adding 3 parts of mesoporous hollow silica particles, stirring for 40 hours, and filtering to prepare modified chitosan loaded mesoporous hollow silica particles;
(4) placing the loaded modified chitosan mesoporous hollow silica particles into deionized water, adding 0.1 part of glyoxal, reacting for 4 hours at 30 ℃, and then filtering, washing and drying to obtain anti-aging silica particles;
(5) placing the anti-aging silica particles in 1 wt% of gamma-aminopropyltriethoxysilane aqueous solution for reaction for 15h to carry out silane modification;
(6) dispersing 1 part of silane-modified anti-aging silicon dioxide particles into 100 parts of epoxy resin, and then adding 30 parts of curing agent for crosslinking and curing to prepare the anti-aging insulating epoxy resin.
Example 3: the difference from the embodiment 1 is that the bushing is prepared from an anti-aging insulating epoxy resin, and the preparation of the anti-aging insulating epoxy resin comprises the following steps:
(1) placing 3 parts of chitosan into 100 parts of dimethyl sulfoxide for full swelling, then adding 8 parts of p-methoxy cinnamoyl chloride and 1.5 parts of pyridine, stirring at room temperature for reaction for 30 hours, then precipitating a modified product by using ethanol, performing suction filtration, and drying to prepare modified chitosan;
(2) adding 10 parts of ethyl orthosilicate and 3 parts of hexadecyl trimethyl ammonium chloride into 120 parts of 50wt% ethanol aqueous solution, then adding 20wt% ammonia water, fully stirring, reacting for 20 hours at 30 ℃, filtering to obtain precipitate, and calcining for 7 hours at 650 ℃ to prepare mesoporous hollow silica particles;
(3) dispersing 4 parts of modified chitosan into 1000 parts of 1.5wt% acetic acid aqueous solution, then adding 5 parts of mesoporous hollow silica particles, stirring for 60 hours, and filtering to prepare mesoporous hollow silica particles loaded with modified chitosan;
(4) placing the loaded modified chitosan mesoporous hollow silica particles into deionized water, adding 0.3 part of glyoxal, reacting for 3 hours at 35 ℃, and then filtering, washing and drying to obtain anti-aging silica particles;
(5) placing the anti-aging silicon dioxide particles in 2wt% of gamma-aminopropyltriethoxysilane water solution for reaction for 15h to carry out silane modification;
(6) dispersing 5 parts of silane-modified anti-aging silicon dioxide particles into 120 parts of epoxy resin, and then adding 80 parts of curing agent for crosslinking and curing to prepare the anti-aging insulating epoxy resin.
Comparative example 1:
the sleeve is prepared from anti-aging insulating epoxy resin, and the preparation of the anti-aging insulating epoxy resin comprises the following steps:
(1) placing 2 parts of chitosan into 70 parts of dimethyl sulfoxide for full swelling, then adding 7 parts of p-methoxy cinnamoyl chloride and 1 part of pyridine, stirring and reacting for 25 hours at room temperature, then precipitating a modified product by using ethanol, performing suction filtration, and drying to prepare modified chitosan;
(2) dispersing 3 parts of modified chitosan into 110 parts of epoxy resin, and then adding 50 parts of curing agent for crosslinking and curing to prepare the anti-aging insulating epoxy resin.
Comparative example 2:
the sleeve is prepared from anti-aging insulating epoxy resin, and the preparation of the anti-aging insulating epoxy resin comprises the following steps:
(1) adding 7 parts of ethyl orthosilicate and 2 parts of hexadecyl trimethyl ammonium chloride into 110 parts of 45 wt% ethanol aqueous solution, then adding 17 wt% ammonia water, fully stirring, reacting at 27 ℃ for 23 hours, filtering to obtain precipitate, and calcining at 620 ℃ for 8 hours to prepare mesoporous hollow silica particles;
(2) dispersing 3 parts of chitosan into 900 parts of 1.2 wt% acetic acid aqueous solution, then adding 4 parts of mesoporous hollow silica particles, stirring for 50h, and filtering to prepare mesoporous hollow silica particles loaded with chitosan;
(3) placing the loaded chitosan mesoporous hollow silica particles into deionized water, adding 0.2 part of glyoxal, reacting for 3.5h at 33 ℃, and then filtering, washing and drying to obtain the anti-aging silica particles;
(4) placing the anti-aging silicon dioxide particles in 1.5wt% of gamma-aminopropyl triethoxysilane aqueous solution for reaction for 12 hours to carry out silane modification;
(5) dispersing 3 parts of silane-modified anti-aging silicon dioxide particles in 110 parts of epoxy resin, and then adding 50 parts of curing agent for crosslinking and curing to prepare the anti-aging insulating epoxy resin.
Comparative example 3:
the sleeve is prepared from anti-aging insulating epoxy resin, and the preparation of the anti-aging insulating epoxy resin comprises the following steps:
(1) placing 2 parts of chitosan into 70 parts of dimethyl sulfoxide for full swelling, then adding 7 parts of p-methoxy cinnamoyl chloride and 1 part of pyridine, stirring and reacting for 25 hours at room temperature, then precipitating a modified product by using ethanol, and drying after suction filtration to prepare modified chitosan;
(2) adding 7 parts of ethyl orthosilicate and 2 parts of hexadecyl trimethyl ammonium chloride into 110 parts of 45 wt% ethanol aqueous solution, then adding 17 wt% ammonia water, fully stirring, reacting at 27 ℃ for 23 hours, filtering to obtain precipitate, and calcining at 620 ℃ for 8 hours to prepare mesoporous hollow silica particles;
(3) dispersing 3 parts of modified chitosan into 900 parts of 1.2 wt% acetic acid aqueous solution, then adding 4 parts of mesoporous hollow silica particles, stirring for 50h, and filtering to prepare modified chitosan loaded mesoporous hollow silica particles;
(4) placing the mesoporous hollow silica particles loaded with the modified chitosan into 1.5wt% of gamma-aminopropyltriethoxysilane aqueous solution for reaction for 12 hours for silane modification;
(5) dispersing 3 parts of silane-modified anti-aging silicon dioxide particles in 110 parts of epoxy resin, and then adding 50 parts of curing agent for crosslinking and curing to prepare the anti-aging insulating epoxy resin.
Carrying out tensile strength performance tests on the epoxy resins prepared in the examples and the comparative examples before and after ultraviolet light aging, wherein the tensile strength performance test standard is GB/T1040.1-2018; ultraviolet light ageing was carried out according to standard GB/T16422.3-1997, in which the ultraviolet wavelength was 340nm, using exposure regime 1, i.e. the composite samples were exposed to radiation at 60 ℃ for 4h and then to non-radiation condensation at 50 ℃ for 4h, alternately, the total ageing exposure time being 500 h. The test data are shown in the table below.
| Item | Tensile strength (Mpa) | Post-aging tensile Strength (Mpa) | Tensile Strength loss Rate (%) |
| Example 1 | 52.3 | 47.6 | 8.9 |
| Example 2 | 48.6 | 44 | 9.5 |
| Example 3 | 53.4 | 48.8 | 8.7 |
| Comparative example 1 | 40.2 | 31.6 | 21.3 |
| Comparative example 2 | 51.9 | 43.9 | 15.4 |
| Comparative example 3 | 52.1 | 44.3 | 14.9 |
According to the data, the anti-aging insulating epoxy resin prepared by the invention has small tensile strength loss rate and good anti-aging performance after being aged by ultraviolet light; the difference between the comparative example 1 and the example 1 is that the modified chitosan is directly blended with the epoxy resin, the modified chitosan is easily dissolved out of the matrix after aging, so that the loss rate of tensile strength is high, and the anti-aging performance is poor, and the difference between the comparative example 2 and the example 1 is that the chitosan is not modified, so that the anti-aging performance is also poor compared with the example 1; comparative example 3 is different from example 1 in that glyoxal crosslinking is not performed after modified chitosan is loaded in mesoporous hollow silica particles, and thus the modified chitosan loaded in the mesoporous hollow silica particles is easily eluted from the substrate after the substrate is aged to some extent, and cannot play a role in further preventing aging.
The raw materials and equipment used in the invention are common raw materials and equipment in the field if not specified; the methods used in the present invention are conventional in the art unless otherwise specified.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (9)
1. The telescopic insulating wire clamping device is characterized by comprising a sleeve (1), a movable rod (2) and a clamping device (3), wherein the movable rod (2) is sleeved in the sleeve (1) and can slide relatively, and the clamping device (3) is fixedly connected with the top end of the movable rod (2); a trigger mechanism (21), a transmission mechanism (22) and a locking mechanism (23) which are sequentially connected in a sliding manner are arranged in the movable rod (2), and a locking notch (11) matched with the locking mechanism (23) is formed in the wall of the sleeve (1);
the sleeve is prepared from anti-aging insulating epoxy resin, and the preparation method of the anti-aging insulating epoxy resin comprises the following steps:
(1) placing 1-3 parts of chitosan in 50-100 parts of dimethyl sulfoxide for full swelling, then adding 5-8 parts of p-methoxy cinnamoyl chloride and 0.5-1.5 parts of pyridine, stirring at room temperature for reaction for 20-30h, then precipitating a modified product by using ethanol, performing suction filtration, and drying to prepare modified chitosan;
(2) adding 5-10 parts of ethyl orthosilicate and 1-3 parts of hexadecyl trimethyl ammonium chloride into 120 parts of 40-50wt% ethanol aqueous solution of 100-;
(3) dispersing 2-4 parts of modified chitosan into 1000 parts of 800-1.5 wt% acetic acid aqueous solution, then adding 3-5 parts of mesoporous hollow silica particles, stirring for 40-60h, and filtering to prepare the loaded modified chitosan mesoporous hollow silica particles;
(4) placing the loaded modified chitosan mesoporous hollow silica particles into deionized water, adding 0.1-0.3 part of glyoxal, reacting for 3-4h at 30-35 ℃, and then filtering, washing and drying to obtain the anti-aging silica particles;
(5) placing the anti-aging silica particles in 1-2wt% of gamma-aminopropyltriethoxysilane aqueous solution for reaction for 10-15h to carry out silane modification;
(6) dispersing 1-5 parts of silane modified anti-aging silicon dioxide particles into 100-120 parts of epoxy resin, and then adding 30-80 parts of curing agent for crosslinking and curing to prepare the anti-aging insulating epoxy resin.
2. The telescopic insulating wire clamping device according to claim 1, wherein the trigger mechanism (21) comprises a trigger sliding cavity (211), a trigger sliding block (212) and a trigger spring (213), the trigger sliding block (212) is arranged in the trigger sliding cavity (211) and is connected with the inner wall of the movable rod (2) through the trigger spring (213), a trigger sliding inclined plane (214) is arranged on the trigger sliding block (212), and the end part of the trigger sliding block (212) extends out of the movable rod (2).
3. The telescopic insulating wire clamping device as claimed in claim 2, wherein the locking mechanism (23) comprises a locking sliding cavity (231), a locking sliding block (232) and a locking spring (233), the locking sliding block (232) is arranged in the locking sliding cavity (231) and is connected with the inner wall of the movable rod (2) through the locking spring (233), the locking sliding block (232) is provided with a locking sliding inclined plane (234), and the end part of the locking sliding block is provided with a locking block (235) matched with the locking opening (11).
4. The telescopic insulating wire clamping device according to claim 3, wherein the transmission mechanism (22) comprises a transmission sliding cavity (221) and a transmission sliding block (222), the two ends of the transmission sliding block (222) are respectively provided with a transmission sliding inclined plane (223) matched with the trigger sliding inclined plane (214) and the lock catch sliding inclined plane (234), the side edge of the transmission sliding block (222) is provided with a limit block (224), and the transmission sliding cavity (221) is provided with a limit cavity (225) matched with the limit block (224).
5. The telescopic insulating wire clamping device according to any one of claims 1 to 4, wherein the clamping device (3) comprises a connecting block (31), a fixed clamping jaw (32), a movable clamping jaw (33) and an opening and closing device (34) for opening and closing the movable clamping jaw (33), the clamping device (3) is connected with the movable rod (2) through the connecting block (31), the fixed clamping jaw (32) is fixedly arranged at the end of the connecting block (31), and the movable clamping jaw (33) is elastically connected with the connecting block (31) through a torsion spring (35).
6. The telescopic insulating wire clamping device according to claim 5, wherein the opening and closing device (34) comprises an opening and closing block (331) arranged on the side wall of the movable clamping jaw (33), a rope binding rod (332) arranged on the side wall of the sleeve (1) and a rope (333) for pulling the opening and closing block (331) to control the opening and closing of the movable clamping jaw (33).
7. The telescopic insulating wire clamping device according to any one of claims 1-4, characterized in that the side wall of the movable rod (2) is provided with a limiting ring (24).
8. A telescopic insulating wire clamping device according to any one of claims 1-4, characterized in that the bottom of the sleeve (1) is provided with an anti-slip sleeve (12).
9. The retractable insulating wire clamping device of claim 1, wherein the curing agent is one or more of phthalic anhydride, ethylene diamine, or m-xylene diamine.
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