CN112653033B - Labor-saving insulating wire clamping device - Google Patents
Labor-saving insulating wire clamping device Download PDFInfo
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- CN112653033B CN112653033B CN202011330201.XA CN202011330201A CN112653033B CN 112653033 B CN112653033 B CN 112653033B CN 202011330201 A CN202011330201 A CN 202011330201A CN 112653033 B CN112653033 B CN 112653033B
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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
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Abstract
The invention discloses a labor-saving insulating wire clamping device, which relates to the technical field of electric power operation auxiliary tools and comprises a fixed rod, an operating rod and a wire clamping device, wherein the wire clamping device comprises a fixed clamping mechanism and a movable clamping mechanism for controlling clamping or loosening; the electric power operation lead clamping device is simple in structure and convenient to operate, the movable clamping mechanism is controlled by the operating rod, the lead can be conveniently and quickly clamped and loosened, and the convenience of operation of electric power operation workers is improved.
Description
Technical Field
The invention relates to the technical field of electric power operation auxiliary tools, in particular to a labor-saving insulating wire clamping device.
Background
At present, along with the rapid development of economy and society in China, the requirement for line live working is also higher and higher, and at present, when the overlap joint work of lead wire in live working work is expanded, at first need install the parallel groove clamp to the wire of electric wire netting, adopt insulating trapping mechanism to go into lead wire card in the buckle of parallel groove clamp afterwards to make wire and lead wire press from both sides tightly through parallel groove clamp, thereby make wire and lead wire switch-on. However, the insulating wire clamping device in the prior art is time-consuming and labor-consuming, the operator is inconvenient to use, and potential safety hazards are buried for hot-line work.
For example, a "yarn clamping device" disclosed in chinese patent literature, which is under the publication number CN210957524U, discloses a yarn clamping device comprising: the first wire clamping rod assembly and the second wire clamping rod assembly are relatively movably arranged; the first wire clamping rod assembly is provided with a first wire clamping part and a first handle part, the first wire clamping part and the first handle part are respectively arranged at two ends of the first wire clamping rod assembly, the second wire clamping rod assembly is provided with a second wire clamping part and a second handle part, and the second wire clamping part and the second handle part are respectively arranged at two ends of the second wire clamping rod assembly; the first wire clamping part and the second wire clamping part are arranged oppositely, a wire clamping space for clamping the electric wire is formed between the first wire clamping part and the second wire clamping part, so that the first handle part is driven to move relative to the second handle part, the first wire clamping part and the second wire clamping part are driven to move close to or away from each other, and the electric wire is clamped or released. However, the utility model discloses a trapping mechanism need last make power just can keep the electric wire to press from both sides tightly, wastes time and energy, and operating personnel uses comparatively inconveniently simultaneously, has buried the potential safety hazard for live working.
Disclosure of Invention
The invention provides a labor-saving insulating wire clamping device, which aims to solve the problems that the insulating wire clamping device in the prior art is time-consuming and labor-consuming, and the operation personnel is inconvenient to use.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a laborsaving insulating trapping mechanism, includes dead lever, action bars and trapping mechanism, trapping mechanism includes fixed fixture and is used for controlling the activity fixture that presss from both sides tightly or unclamp, the action bars is inserted and is located in the dead lever, and outside its one end extended to the dead lever bottom, its other end passed through movable rod mechanism and is connected with activity fixture for the tight or unclamp of control activity fixture.
The clamping device comprises a movable clamping mechanism, a fixed clamping mechanism and a movable clamping mechanism, wherein the movable clamping mechanism is arranged in the fixed rod, the movable clamping mechanism is arranged in the fixed clamping mechanism, the movable clamping mechanism is arranged in the fixed rod, the movable clamping mechanism is arranged in the movable clamping mechanism, and the movable clamping mechanism is matched with the fixed clamping mechanism to clamp the lead. The electric power operation lead clamping device is simple in structure and convenient to operate, the movable clamping mechanism is controlled by the operating rod, the lead can be conveniently and quickly clamped and loosened, and the convenience of operation of electric power operation workers is improved.
Preferably, the fixed clamping mechanism comprises a clamping elbow and a connecting platform which are connected with each other, the movable clamping mechanism is arranged on the connecting platform, and the fixed rod is fixedly connected with the connecting platform.
The clamping elbow in the fixed clamping mechanism is used for being matched with the movable clamping mechanism to clamp the lead, and the connecting platform is used for connecting the wire clamping device with the fixed rod.
Preferably, the movable clamping mechanism comprises a sleeve, a clamping spring, a movable block and a clamping block, the movable block is arranged in the sleeve, the bottom of the movable block is connected with the bottom of the sleeve through the clamping spring, and the top of the movable block extends out of the sleeve and is fixedly connected with the clamping block.
When the lead is clamped, the movable block in the movable clamping mechanism is pulled downwards manually through the operating rod to control the movable rod mechanism, the clamping block is driven to move downwards, the clamping spring is also in a compressed state, the distance between the clamping block and the clamping elbow is increased at the moment, the whole wire clamping device is in a loosened state, the lead is placed into the wire clamping device, the operating rod is loosened at the moment, the clamping spring releases elastic force, the clamping block is pushed upwards, and therefore the clamping of the lead is achieved.
Preferably, the movable rod mechanism comprises a connecting rod and a transmission rod, one end of the connecting rod is hinged to the transmission rod, the other end of the connecting rod is hinged to the operating rod, a movable notch is formed in the transmission rod, the transmission rod is rotatably connected with the clamping elbow through the movable notch, and the other end of the transmission rod is hinged to the movable block.
The invention controls the up-and-down movement of the movable block in the movable clamping mechanism through the movable rod mechanism, when in use, the operating rod moves up to drive the connecting rod to move up, because one end of the transmission rod is hinged with the connecting rod, the other end is hinged with the movable block and is rotationally connected with the clamping elbow through the movable notch, therefore, in the process of moving the connecting rod upwards, the transmission rod drives the movable block to downwards move to realize the loosening of the wire clamping device, at the moment, the right side wall of the movable notch is abutted with the fixed bolt on the clamping elbow to realize the downward movement limiting of the movable block, when the lead is placed and needs to be clamped, the operating rod is loosened, the clamping block moves upwards under the action of the clamping spring, the operation is convenient and labor-saving, and in the moving process, after the left side wall of the movable notch is abutted against the fixing bolt on the clamping elbow, the clamping block stops moving to form limiting, and the clamping of the lead is completed.
Preferably, the operating rod comprises a pushing rod, a pushing block, a connecting block and a pushing spring, the pushing block is connected with the outer end of the bottom of the pushing rod extending to the fixing rod, one end of the connecting block is connected with the inner end of the pushing rod located in the fixing rod, and the other end of the connecting block is connected with the inner wall of the fixing rod through the pushing spring.
In the process of loosening the movable clamping mechanism, the pushing rod and the connecting block are pushed to move upwards through the pushing block, the pushing spring is compressed at the moment, and when the movable clamping mechanism needs to be clamped tightly, the pushing spring can push the pushing rod to move downwards at the same time, so that the clamping mechanism is convenient and labor-saving.
Preferably, the fixed rod is provided with a pushing notch for the movable rod mechanism to move.
The pushing notch can limit the moving position of the movable rod mechanism.
Preferably, the upper surface of the clamping block is a clamping concave surface.
The clamping concave surface is convenient for clamping the lead.
Preferably, the lower surface of the pushing block is a pushing concave surface.
The concave surface is pushed to facilitate the operation of the operators in the electric power operation.
Preferably, the fixing rod 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 fixing rod can be used for preparing the fixing rod of the wire clamping device. 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 electric power operation lead clamping device is simple in structure and convenient to operate, the movable clamping mechanism is controlled by the operating rod, the lead can be conveniently and quickly clamped and loosened, and the convenience of operation of electric power operation workers is improved.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is another schematic structure of the present invention.
FIG. 3 is a schematic diagram of the structure of the present invention at A.
FIG. 4 is a schematic diagram of the structure of the present invention at B.
Fig. 5 is a partial structural schematic diagram of the present invention.
In the figure: the device comprises a fixing rod 1, a pushing notch 11, an operating rod 2, a pushing rod 21, a pushing block 22, a pushing concave surface 221, a connecting block 23, a pushing spring 24, a wire clamping device 3, a fixing clamping mechanism 31, a clamping elbow 311, a connecting platform 312, a movable clamping mechanism 32, a sleeve 321, a clamping spring 322, a movable block 323, a clamping block 324, a clamping concave surface 3241, a movable rod mechanism 4, a connecting rod 41, a transmission rod 42 and a movable notch 421.
Detailed Description
The invention is further described with reference to specific embodiments.
Example 1: as shown in fig. 1-2, a labor-saving insulating wire clamping device comprises a fixed rod 1, an operating rod 2 and a wire clamping device 3, wherein the wire clamping device 3 comprises a fixed clamping mechanism 31 and a movable clamping mechanism 32 for controlling clamping or loosening, the fixed clamping mechanism 31 comprises a clamping elbow 311 and a connecting platform 312 which are connected with each other, the movable clamping mechanism 32 is arranged on the connecting platform 312, and the fixed rod 1 is fixedly connected with the connecting platform 312; the movable clamping mechanism 32 comprises a sleeve 321, a clamping spring 322, a movable block 323 and a clamping block 324, wherein the movable block 323 is arranged in the sleeve 321, the bottom of the movable block 323 is connected with the bottom of the sleeve 321 through the clamping spring 322, the top of the movable block extends out of the sleeve 321 and is fixedly connected with the clamping block 324, and the upper surface of the clamping block 324 is a clamping concave surface 3241; the operating rod 2 is inserted into the fixed rod 1, one end of the operating rod extends out of the bottom of the fixed rod 1, the other end of the operating rod is connected with the movable clamping mechanism 32 through the movable rod mechanism 4 and used for controlling the clamping or loosening of the movable clamping mechanism 32, the operating rod 2 comprises a pushing rod 21, a pushing block 22, a connecting block 23 and a pushing spring 24, the pushing block 22 is connected with the outer end of the fixed rod 1, the bottom of the pushing rod 21 extends to the outer end of the fixed rod 1, one end of the connecting block 23 is connected with the inner end of the fixed rod 1, the other end of the connecting block is connected with the inner wall of the fixed rod 1 through the pushing spring 24, and the lower surface of the pushing block 22 is a pushing concave surface 221; the movable rod mechanism 4 comprises a connecting rod 41 and a transmission rod 42, one end of the connecting rod 41 is hinged to the transmission rod 42, the other end of the connecting rod is hinged to the operating rod 2, a movable notch 421 is formed in the transmission rod 42, the transmission rod 42 is rotatably connected with the clamping elbow 311 through the movable notch 421, the other end of the transmission rod 42 is hinged to the movable block 323, as shown in fig. 5, and a pushing notch 11 used for the movable rod mechanism 4 to move is formed in the fixed rod 1.
When the device is used, the movable rod mechanism 4 controls the movable block 323 in the movable clamping mechanism 32 to move up and down, and when the device is used by an electric power operation operator, as shown in fig. 1 and 3, the pushing block 22 pushes the pushing rod 21 and the connecting block 23 to move up, the pushing spring 24 compresses and drives the connecting rod 41 to move up, because one end of the transmission rod 42 is hinged with the connecting rod 41, the other end of the transmission rod 42 is hinged with the movable block 323 and is rotatably connected with the clamping elbow 311 through the movable notch 421, during the process of moving up of the connecting rod 41, the transmission rod 42 drives the movable block 323 to move down, the clamping spring 322 is also in a compressed state, the distance between the clamping block 324 and the clamping elbow 311 is increased, and the whole wire clamping device 3 is in a loosened state, at this time, the right side wall of the movable notch 421 abuts against the fixing bolt on the clamping elbow 311, so that the movable block 323 can move downwards for limiting, when a lead is placed and needs to be clamped, as shown in fig. 2 and 4, the operating rod 2 is released, the pushing spring 24 can push the pushing rod 21 to move downwards at the same time, the clamping block 324 moves upwards under the action of the clamping spring 322, and in the moving process, after the left side wall of the movable notch 421 abuts against the fixing bolt on the clamping elbow 311, the clamping block 324 stops moving, so that limiting is formed, and clamping of the lead is completed.
The fixing rod 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 fixing rod 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 fixing rod 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 modified chitosan loaded mesoporous hollow silica particles;
(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 fixing rod 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 fixing rod 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 fixing rod 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 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 the modified chitosan is loaded in the 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 of 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. A labor-saving insulating wire clamping device is characterized by comprising a fixed rod (1), an operating rod (2) and a wire clamping device (3), wherein the wire clamping device (3) comprises a fixed clamping mechanism (31) and a movable clamping mechanism (32) for controlling clamping or loosening, the operating rod (2) is inserted into the fixed rod (1), one end of the operating rod extends out of the bottom of the fixed rod (1), and the other end of the operating rod is connected with the movable clamping mechanism (32) through a movable rod mechanism (4) and used for controlling the clamping or loosening of the movable clamping mechanism (32);
the fixing rod is prepared from 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.
2. The labor-saving insulation wire clamping device as claimed in claim 1, wherein the fixed clamping mechanism (31) comprises a clamping elbow (311) and a connecting platform (312) which are connected with each other, the movable clamping mechanism (32) is arranged on the connecting platform (312), and the fixed rod (1) is fixedly connected with the connecting platform (312).
3. The labor-saving insulating wire clamping device according to claim 2, wherein the movable clamping mechanism (32) comprises a sleeve (321), a clamping spring (322), a movable block (323) and a clamping block (324), the movable block (323) is arranged in the sleeve (321), the bottom of the movable block is connected with the bottom of the sleeve (321) through the clamping spring (322), and the top of the movable block extends out of the sleeve (321) and is fixedly connected with the clamping block (324).
4. The labor-saving insulating wire clamping device according to claim 3, wherein the movable rod mechanism (4) comprises a connecting rod (41) and a transmission rod (42), one end of the connecting rod (41) is hinged to the transmission rod (42), the other end of the connecting rod is hinged to the operating rod (2), a movable notch (421) is formed in the transmission rod (42), the transmission rod (42) is rotatably connected with the clamping elbow (311) through the movable notch (421), and the other end of the transmission rod (42) is hinged to the movable block (323).
5. The labor-saving insulation wire clamping device as claimed in one of claims 1 to 4, wherein the operating rod (2) comprises a pushing rod (21), a pushing block (22), a connecting block (23) and a pushing spring (24), the pushing block (22) is connected with the outer end of the bottom of the pushing rod (21) extending to the fixing rod (1), one end of the connecting block (23) is connected with the pushing rod (21) at the inner end of the fixing rod (1), and the other end of the connecting block is connected with the inner wall of the fixing rod (1) through the pushing spring (24).
6. A labor-saving insulated wire clamping device as claimed in one of claims 1 to 4, characterized in that the fixed rod (1) is provided with a pushing notch (11) for the movable rod mechanism (4) to move.
7. The labor-saving insulation wire clamping device as claimed in claim 3, wherein the upper surface of the clamping block (324) is a clamping concave surface (3241).
8. The labor-saving insulation wire clamping device as claimed in claim 5, wherein the lower surface of the pushing block (22) is a pushing concave surface (221).
9. The labor-saving insulating wire clamping device according to claim 1, wherein the curing agent is one or more of phthalic anhydride, ethylenediamine or m-xylylenediamine.
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