阅读说明：本技术 一种单组分硫化导电硅胶的制备方法 (Preparation method of single-component vulcanized conductive silica gel ) 是由 邢明 徐浩 于 2020-05-06 设计创作，主要内容包括：本发明涉及导电屏蔽材料技术领域,具体涉及一种单组分硫化导电硅胶的制备方法,包括导电填料、搅拌分散、稀释喷涂和硫化定型,其中稀释喷涂中采用的喷涂室包括壳体、基板盒和喷头；所述基板盒的下方设有支柱,支柱使基板盒呈倾斜的角度；由于喷涂成型的过程中,无法控制导电硅胶液附着在基板盒上的均匀厚度,导电硅胶上存在静置成型和硫化程度不完全的区域,破坏了其整体性能的稳定性,降低了导电硅胶的使用效果；故此,本发明通过设置在喷涂室中倾斜的基板盒,配合基板盒一端的通槽,将喷涂在基板盒上较多的导电硅胶液在重力作用下流出,进而维持了导电硅胶涂层均衡的厚度,从而提升了单组分硫化导电硅胶的制备效果。(The invention relates to the technical field of conductive shielding materials, in particular to a preparation method of single-component vulcanized conductive silica gel, which comprises conductive filler, stirring and dispersing, dilution spraying and vulcanization shaping, wherein a spraying chamber adopted in the dilution spraying comprises a shell, a substrate box and a nozzle; a support is arranged below the substrate box, and the support makes the substrate box form an inclined angle; in the process of spray forming, the uniform thickness of the conductive silica gel liquid attached to the substrate box cannot be controlled, and areas with incomplete standing forming and vulcanization degrees exist on the conductive silica gel, so that the stability of the overall performance of the conductive silica gel is damaged, and the using effect of the conductive silica gel is reduced; therefore, the inclined substrate box arranged in the spraying chamber is matched with the through groove at one end of the substrate box, so that more conductive silica gel liquid sprayed on the substrate box flows out under the action of gravity, and the uniform thickness of the conductive silica gel coating is maintained, thereby improving the preparation effect of the single-component vulcanized conductive silica gel.)

1. A preparation method of single-component vulcanized conductive silica gel is characterized by comprising the following steps:

s1, conductive filler: selecting nickel-coated aluminum powder as conductive particles of the conductive silica gel, screening the aluminum powder through a 100-mesh screen, and preparing the aluminum powder into the required conductive particles in a chemical nickel plating mode;

s2, stirring and dispersing: respectively adding quantitative raw rubber and an auxiliary agent into a stirring tank, carrying out vacuum stirring for 10min to obtain a base rubber, adding the conductive particles prepared in S1, wherein the quality of the added conductive particles is controlled to be 18-25% of that of the base rubber, dispersing the conductive particles into the base rubber by using the stirring tank, and carrying out co-dispersion stirring for 15min when the stirring tank operates for 30S and is interrupted for 1min in the dispersion process;

s3, dilution and spraying: adding the conductive silica gel liquid dispersed in the S2 into a charging barrel (12), wherein the charging barrel (12) is filled with a diluent in advance, the conductive silica gel is adjusted to be within a required viscosity range, and the inclined substrate box (2) in the spraying chamber enables the redundant conductive silica gel coated to flow out, so that the conductive silica gel attached to the substrate box (2) with uniform thickness is subjected to standing treatment, and the redundant conductive silica gel liquid is collected for secondary use;

s4, vulcanization and shaping: after the conductive silica gel in the S3 is placed and treated, the conductive silica gel is vulcanized and shaped on the substrate box (2), and the finally prepared conductive silica gel is taken out from the through groove (22) to obtain a finished product of the conductive silica gel;

wherein the spray booth described in S3 includes a case (1), a substrate cartridge (2), and a spray head (3); the top of the shell (1) is provided with a stretched material port (11), the upper end of the material port (11) is provided with an installed material barrel (12), and the side part of the material port (11) is provided with an air port (111); the bottom of one side of the shell (1) is provided with a protruding rotating handle (13), and the bottom of the shell (1) at the adjacent side of the rotating handle (13) is provided with a turnover cover (14); a substrate box (2) is arranged in the shell (1), a hinged support (21) is arranged at the bottom of the substrate box (2), and a support column (4) is arranged below the hinged support (21); the support post (4) is fixed in the shell (1), the top end of the support post (4) is rotatably connected with the hinged support (21), and the support post (4) enables the substrate box (2) to be in an inclined angle; a through groove (22) is formed in the end part of the substrate box (2) with a lower inclination, and a baffle plate (23) which is installed in a sliding mode is arranged in the through groove (22); a spray head (3) is arranged above the substrate box (2), the spray head (3) is rotatably arranged at the bottom of the material opening (11), and a coating frame (5) is arranged between the spray head (3) and the substrate box (2); supporting rods (51) are arranged at four corners of the coating frame (5) and fixed on the substrate box (2), the coating frame (5) is parallel to the bottom surface of the substrate box (2), and a material bag (52) is arranged between the coating frame (5) and the spray head (3) and communicated with each other.

2. The method for preparing a single-component vulcanized conductive silicone rubber according to claim 1, wherein: the baffle plate (23) is provided with a groove pipe (231), and the groove pipe (231) is positioned at one end of the baffle plate (23) facing the outer side of the substrate box (2); the bottom of the groove pipe (231) is provided with a flexible extension pipe (232), and the tail end of the extension pipe (232) is provided with a clamping strip (233); the other end of card strip (233) is equipped with collects box (6), collects box (6) and links to each other with extension pipe (232) through card strip (233), collects box (6) and is located inside flip (14) corresponding casing (1).

3. The method for preparing a single-component vulcanized conductive silicone rubber according to claim 2, wherein: the bottom of the collecting box (6) is provided with a heat-insulating pipe (61), and two ends of the heat-insulating pipe (61) are provided with sliding chutes (62); the collecting box (6) is slidably mounted on the heat preservation pipe (61), and the collecting box (6) is dismounted from the position of the turnover cover (14) on the shell (1) along the sliding groove (62).

4. The method for preparing a single-component vulcanized conductive silicone rubber according to claim 3, wherein: the bottom end of the sliding groove (62) facing the inside of the shell (1) is provided with a spring (621), the bottom end of the spring (621) is fixed on the sliding groove (62), and the top end of the spring (621) is in contact with the collecting box (6).

5. The method for preparing a single-component vulcanized conductive silicone rubber according to claim 1, wherein: the strut (4) comprises a fixed column (41) and a lifting column (42); the fixing column (41) is one end far away from the through groove (22) of the substrate box (2), and a convex block (411) is arranged on the hinged support (21) corresponding to the fixing column (41); the lifting column (42) is provided with a rotating handle (13) for controlling the height of the lifting column (42).

6. The method for preparing a single-component vulcanized conductive silicone rubber according to claim 5, wherein: a connecting rod (43) is arranged on the lifting column (42), and a fixed seat (431) is arranged at the tail end of the connecting rod (43); the fixed seat (431) is arranged below the baffle (23); one end of the connecting rod (43) is fixed on the lifting column (42), and the other end of the connecting rod (43) is hinged on the fixed seat (431).

Technical Field

The invention relates to the technical field of conductive shielding materials, in particular to a preparation method of single-component vulcanized conductive silica gel.

Background

With the continuous development of science and technology, flexible electronic products begin to appear in our lives, and because the flexible products require materials with the characteristics of light weight, portability and the like, the conductive film becomes a common flexible conductive material in the products, has good conductivity and can realize certain specific electronic functions, wherein the conductive rubber has large-scale elastic deformation capacity and is more suitable to be used as a film material for preparing flexible electronic devices; the conductive silica gel is prepared by uniformly distributing conductive particles such as silver-coated copper powder, nickel-coated graphite powder and the like in the silica gel, and the conductive particles are mutually contacted and communicated to achieve good conductive performance; the main functions of the electromagnetic shielding device are sealing and electromagnetic shielding; the product can be molded or extruded, and the conductive silica gel has good electromagnetic sealing and water vapor sealing capabilities and can provide good conductivity under certain pressure; for a description of the preparation method of the conductive silica gel, see: praise, preparation of filled conductive silicone rubber film and reliability research [ D ], beijing, university of beijing industry, 2018.

The conductivity of the conductive silicone rubber film is due to the conductive filler dispersed in the rubber to form a conductive network, and experiments in the references prove that: the excellent dispersion condition and the excellent conductivity of the filler in the liquid conductive rubber can be achieved only by fully and mechanically stirring; in the spraying of the conductive rubber, the conductive silica gel coating coated on the substrate is difficult to control the stable thickness of the controller, different treatment degrees are caused to the subsequent shaping and vulcanization of the conductive silica gel, and the final quality of the conductive silica gel is influenced.

Disclosure of Invention

In order to make up for the defects of the prior art, the invention provides a preparation method of single-component vulcanized conductive silica gel.

The invention relates to a preparation method of single-component vulcanized conductive silica gel, which comprises the following steps:

s1, conductive filler: selecting nickel-coated aluminum powder as conductive particles of the conductive silica gel, screening the aluminum powder through a 100-mesh screen, and preparing the aluminum powder into the required conductive particles in a chemical nickel plating mode; the conductive particles are produced before the conductive silica gel is prepared, so that the purity of the conductive particles can be ensured, the conductive particles are prevented from being polluted during storage, and the quality of the conductive particles in the conductive silica gel is ensured;

s2, stirring and dispersing: respectively adding quantitative raw rubber and an auxiliary agent into a stirring tank, carrying out vacuum stirring for 10min to obtain a base rubber, adding the conductive particles prepared in S1, wherein the quality of the added conductive particles is controlled to be 18-25% of that of the base rubber, dispersing the conductive particles into the base rubber by using the stirring tank, and carrying out co-dispersion stirring for 15min when the stirring tank operates for 30S and is interrupted for 1min in the dispersion process; controlling the proportion of the conductive particles in the base rubber, maintaining the rubber characteristic of the conductive silica gel, controlling the intermittent operation of the stirring process in the dispersion stirring process, preventing the conductive particles from being aggregated in a certain area of the base rubber under the centrifugal action, and maintaining the uniform distribution of the conductive particles in the conductive silica gel;

s3, dilution and spraying: adding the conductive silica gel liquid dispersed in the step S2 into a charging barrel, wherein the charging barrel is filled with a diluent in advance, the conductive silica gel is prepared into a required viscosity range, and an inclined substrate box in a spraying chamber enables the redundant conductive silica gel coated to flow out, so that the conductive silica gel attached to the substrate box and having uniform thickness is subjected to standing treatment, and the redundant conductive silica gel liquid is collected for secondary use; adding a diluent into the conductive silica gel, and modulating the conductive silica gel into a required viscosity state to facilitate spraying operation, wherein the conductive silica gel coating sprayed on the substrate box flows out of redundant parts under the action of gravity, so that the quality of the prepared conductive silica gel is maintained, and meanwhile, the waste of components of the conductive silica gel is prevented;

s4, vulcanization and shaping: after the conductive silica gel in the step S3 is subjected to standing treatment, vulcanization molding is performed on the substrate box, and finally the prepared conductive silica gel is taken out from the through groove to obtain a finished product of the conductive silica gel;

wherein the spray booth described in S3 includes a housing, a substrate cartridge, and a spray head; the top of the shell is provided with a protruding material port, the upper end of the material port is provided with an installed material barrel, and the side part of the material port is provided with an air port; the bottom of one side of the shell is provided with an extended rotating handle, and the bottom of the shell on the adjacent side of the rotating handle is provided with a turnover cover; a substrate box is arranged inside the shell, a hinged support is arranged at the bottom of the substrate box, and a support column is arranged below the hinged support; the support is fixed in the shell, the top end of the support is rotatably connected with the hinged support, and the support enables the substrate box to be in an inclined angle; a through groove is formed in the end part of the substrate box with a lower inclination, and a baffle plate which is installed in a sliding mode is arranged in the through groove; a spray head is arranged above the substrate box, the spray head is rotatably arranged at the bottom of the material port, and a coating frame is arranged between the spray head and the substrate box; supporting rods are arranged at four corners of the coating frame and fixed on the substrate box, the coating frame is parallel to the bottom surface of the substrate box, and a material bag is arranged between the coating frame and the spray head and communicated with the spray head; when the conductive silica gel processing device is used, the charging barrel prepared with the conductive silica gel liquid is installed on the material opening, the guide pipe of the air pump is connected to the air opening, the conductive silica gel liquid is sprayed on the substrate box by the spray head, and the required finished product is prepared by vulcanization after standing for a period of time; therefore, the height between the support columns is adjusted through the support columns arranged below the substrate box in the spraying chamber to enable the substrate box to be in an inclined angle, the coating frame correspondingly installed on the substrate box enables the conductive silica gel liquid to be uniformly coated on the substrate box through the material bag below the spray head through the coating frame, and meanwhile, the conductive silica gel liquid flows out through the through groove under the action of gravity, so that the conductive silica gel coating attached to the substrate box is in a uniform thickness; according to the invention, the inclined substrate box arranged in the spraying chamber is utilized, and the through groove at one end of the substrate box is matched, so that more conductive silica gel liquid sprayed on the substrate box flows out under the action of gravity, and the uniform thickness of the conductive silica gel coating is further maintained, thereby improving the preparation effect of the single-component vulcanized conductive silica gel.

Preferably, the baffle plate is provided with a groove pipe, and the groove pipe is positioned at one end of the baffle plate facing the outer side of the substrate box; the bottom of the groove pipe is provided with a flexible extension pipe, and the tail end of the extension pipe is provided with a clamping strip; the other end of the clamping strip is provided with a collecting box, the collecting box is connected with the extension pipe through the clamping strip, and the collecting box is positioned in the shell corresponding to the turnover cover; the redundant conductive silicone fluid flowing out through the through groove of the substrate box still has the value of reutilization, and the specifications of the prepared conductive silicone are different, and the extending height of the baffle plate in the through groove needs to be changed, so that the flowing position of the conductive silicone fluid is changed along with the change; through the groove pipe that sets up in baffle upper end one side, the groove pipe changes its position along with the baffle, cooperates the extension pipe on the groove pipe to and install the collection box on the terminal card strip of extension pipe, collect the electrically conductive silica gel liquid that flows out in the base plate box, the waste of unnecessary composition when having avoided preparing electrically conductive silica gel, thereby has promoted the electrically conductive silica gel utilization ratio in the preparation of monocomponent vulcanization electrically conductive silica gel.

Preferably, the bottom of the collecting box is provided with a heat-insulating pipe, and two ends of the heat-insulating pipe are provided with sliding chutes; the collecting box is slidably arranged on the heat preservation pipe and is disassembled and assembled from the turnover cover position on the shell along the sliding groove; in the process of preparing the conductive silica gel, the conductive silica gel on the substrate box needs to be taken out after standing, shaping and vulcanizing, the relative tightness of the spraying chamber needs to be kept in the process, and the conductive silica gel liquid in the collecting box is also influenced, so that the conductive silica gel liquid is damaged to be reused; through the heat preservation pipe that sets up in collection box bottom, maintain the temperature of the interior conductive silicone fluid of collection box for conductive silicone fluid prevents to keep static the change of stereotyping under active state, takes out collection box again after the preparation of the conductive silicone in the base plate box is accomplished, thereby has ensured the reutilization effect of conductive silicone in the preparation of monocomponent vulcanization conductive silicone.

Preferably, a spring is arranged at the bottom end of the sliding chute facing the interior of the shell, the bottom end of the spring is fixed on the sliding chute, and the top end of the spring is in contact with the collecting box; the collecting box is extruded and installed on the clamping strip of the extension pipe through the turnover cover of the shell, and when the collecting box is taken out, the collecting box is difficult to be directly pulled out of the clamping strip after the turnover cover of the shell is opened; through setting up the spring in the spout bottom, flip on the casing opens the back, utilizes the spring to pop out the collection box from the card strip, has simplified the card strip operation that breaks away from the extension pipe when dismantling the collection box to collect the box in the monocomponent vulcanization conductive silica gel preparation result of use has been promoted.

Preferably, the support column comprises a fixed column and a lifting column; the fixing column is one end far away from the through groove of the substrate box, and a lug is arranged on the hinged support corresponding to the fixing column; the lifting column is provided with a rotating handle for controlling the height of the lifting column; the inclination angle of the substrate box is controlled by adjusting the height of the lifting column through the rotating handle, the inclination of the substrate box is difficult to adjust visually due to the sealing property of the shell, and when the rotating handle is operated excessively, the substrate box cannot achieve the inclination effect, so that the conductive silica gel liquid cannot flow out by utilizing gravity, and the preparation effect of the conductive silica gel is damaged; through setting up the lug on fixing corresponding free bearing, play spacing effect to the base plate box, maintain the base plate box slope in required scope to the result of use of base plate box in the preparation of monocomponent vulcanization conductive silica gel has been maintained.

Preferably, the lifting column is provided with a connecting rod, and the tail end of the connecting rod is provided with a fixed seat; the fixed seat is arranged below the baffle; one end of the connecting rod is fixed on the lifting column, and the other end of the connecting rod is hinged on the fixed seat; the specifications of the prepared conductive silica gel are different, the height position of the baffle in the through groove needs to be adjusted, meanwhile, the inclined position of the substrate box is adjusted, the corresponding relation of the baffle and the substrate box is difficult to control by respectively adjusting the positions of the baffle and the substrate box, and the quality of the prepared conductive silica gel is influenced; through setting up the connecting rod on the lift post, on articulated the fixing base of baffle through the connecting rod, the position of adjusting baffle and base plate box slope simultaneously has satisfied the corresponding relation of the two to the preparation effect of monocomponent vulcanization conductive silica gel has been ensured.

The invention has the following beneficial effects:

1. according to the invention, through the inclined substrate box arranged in the spraying chamber, more conductive silica gel liquid flows out under the action of gravity, so that the uniform thickness of the conductive silica gel coating is maintained; the conductive silica gel liquid flowing out of the substrate box is collected, and the conductive silica gel liquid is prevented from standing and shaping under the active state through the heat preservation pipe arranged at the bottom of the collection box, so that the utilization of the single-component vulcanized conductive silica gel is ensured.

2. According to the invention, the collecting box is ejected out of the clamping strip through the spring arranged at the bottom end of the sliding chute, so that the clamping strip operation of separating from the extension pipe when the collecting box is detached is simplified; the convex blocks which are arranged on the corresponding fixed hinged support play a role in limiting the inclination of the substrate box; the connecting rod arranged on the lifting column adjusts the inclined positions of the baffle and the substrate box, and the preparation effect of the single-component vulcanized conductive silica gel is ensured.

Drawings

The invention is further described with reference to the following figures and embodiments.

FIG. 1 is a flow chart of a method for preparing a one-component vulcanized conductive silicone gel according to the present invention;

FIG. 2 is a perspective view of the spray booth of the present invention;

FIG. 3 is a perspective view of a spray chamber component of the present invention;

FIG. 4 is a perspective view of a heat retention tube member in the present invention;

FIG. 5 is a perspective view of a substrate cassette part in the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 4 at A;

FIG. 7 is a partial enlarged view at B in FIG. 5;

FIG. 8 is an enlarged view of a portion of FIG. 5 at C;

in the figure: the device comprises a shell 1, a material opening 11, a gas opening 111, a material barrel 12, a rotating handle 13, a turnover cover 14, a base plate box 2, a hinged support 21, a through groove 22, a baffle plate 23, a groove pipe 231, an extension pipe 232, a clamping strip 233, a spray head 3, a support column 4, a fixing column 41, a projection 411, a lifting column 42, a connecting rod 43, a fixing seat 431, a coating frame 5, a support rod 51, a material bag 52, a collection box 6, a heat preservation pipe 61, a sliding groove 62 and a spring 621.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 8, the preparation method of the single-component vulcanized conductive silica gel of the present invention comprises the following steps:

s1, conductive filler: selecting nickel-coated aluminum powder as conductive particles of the conductive silica gel, screening the aluminum powder through a 100-mesh screen, and preparing the aluminum powder into the required conductive particles in a chemical nickel plating mode; the conductive particles are produced before the conductive silica gel is prepared, so that the purity of the conductive particles can be ensured, the conductive particles are prevented from being polluted during storage, and the quality of the conductive particles in the conductive silica gel is ensured;

s2, stirring and dispersing: respectively adding quantitative raw rubber and an auxiliary agent into a stirring tank, carrying out vacuum stirring for 10min to obtain a base rubber, adding the conductive particles prepared in S1, wherein the quality of the added conductive particles is controlled to be 18-25% of that of the base rubber, dispersing the conductive particles into the base rubber by using the stirring tank, and carrying out co-dispersion stirring for 15min when the stirring tank operates for 30S and is interrupted for 1min in the dispersion process; controlling the proportion of the conductive particles in the base rubber, maintaining the rubber characteristic of the conductive silica gel, controlling the intermittent operation of the stirring process in the dispersion stirring process, preventing the conductive particles from being aggregated in a certain area of the base rubber under the centrifugal action, and maintaining the uniform distribution of the conductive particles in the conductive silica gel;

s3, dilution and spraying: adding the conductive silica gel liquid dispersed in the step S2 into the charging barrel 12, wherein the charging barrel 12 is filled with a diluent in advance, the conductive silica gel is adjusted to be within a required viscosity range, the substrate box 2 inclined in the spraying chamber enables the redundant conductive silica gel coated to flow out, so that the conductive silica gel attached to the substrate box 2 with uniform thickness is subjected to standing treatment, and the redundant conductive silica gel liquid is collected for secondary use; adding a diluent into the conductive silica gel, and modulating the conductive silica gel into a required viscosity state to facilitate spraying operation, wherein the conductive silica gel coating sprayed on the substrate box 2 flows out of redundant parts under the action of gravity, so that the quality of the prepared conductive silica gel is maintained, and meanwhile, the waste of components of the conductive silica gel is prevented;

s4, vulcanization and shaping: after the conductive silica gel in S3 is subjected to standing treatment, the conductive silica gel is vulcanized and shaped on the substrate box 2, and the finally prepared conductive silica gel is taken out from the through groove 22 to obtain a finished product of the conductive silica gel;

wherein the spray booth described in S3 includes a housing 1, a substrate cartridge 2, and a spray head 3; the top of the shell 1 is provided with a protruding material port 11, the upper end of the material port 11 is provided with an installed material barrel 12, and the side part of the material port 11 is provided with an air port 111; the bottom of one side of the shell 1 is provided with an extended rotating handle 13, and the bottom of the shell 1 on the adjacent side of the rotating handle 13 is provided with a turnover cover 14; a substrate box 2 is arranged in the shell 1, a hinged support 21 is arranged at the bottom of the substrate box 2, and a support 4 is arranged below the hinged support 21; the support 4 is fixed in the shell 1, the top end of the support 4 is rotatably connected with the hinged support 21, and the support 4 enables the substrate box 2 to be in an inclined angle; a through groove 22 is formed in the end part of the substrate box 2 with a lower inclination, and a baffle 23 which is installed in a sliding mode is arranged in the through groove 22; a spray head 3 is arranged above the substrate box 2, the spray head 3 is rotatably arranged at the bottom of the material port 11, and a coating frame 5 is arranged between the spray head 3 and the substrate box 2; supporting rods 51 are arranged at four corners of the coating frame 5 and fixed on the substrate box 2, the coating frame 5 is parallel to the bottom surface of the substrate box 2, and a material bag 52 is arranged between the coating frame 5 and the spray head 3 and communicated with each other; when the conductive silica gel processing device is used, the charging barrel 12 prepared with the conductive silica gel liquid is installed on the material opening 11, the guide pipe of the air pump is connected to the air opening 111, the conductive silica gel liquid is sprayed on the substrate box 2 by the spray head 3, and a required finished product is prepared by vulcanization after standing for a period of time; therefore, in the invention, the support columns 4 arranged below the substrate box 2 in the spraying chamber are used for adjusting the height between the support columns 4 to enable the substrate box 2 to be in an inclined angle, and the coating frame 5 correspondingly installed on the substrate box 2 is used for enabling the conductive silicone fluid to be uniformly coated on the substrate box 2 through the material bag 52 below the spray head 3 by the coating frame 5, and simultaneously the conductive silicone fluid flows out through the groove 22 under the action of gravity, so that the conductive silicone coating attached on the substrate box 2 is in a uniform thickness; according to the invention, the inclined substrate box 2 arranged in the spraying chamber is utilized, and the through groove 22 at one end of the substrate box 2 is matched, so that more conductive silica gel liquid sprayed on the substrate box 2 flows out under the action of gravity, and the uniform thickness of the conductive silica gel coating is further maintained, thereby improving the preparation effect of the single-component vulcanized conductive silica gel.

As an embodiment of the present invention, the baffle plate 23 is provided with a groove pipe 231, and the groove pipe 231 is located at one end of the baffle plate 23 facing the outer side of the substrate box 2; the bottom of the groove pipe 231 is provided with a flexible extension pipe 232, and the tail end of the extension pipe 232 is provided with a clamping strip 233; the other end of the clamping strip 233 is provided with a collecting box 6, the collecting box 6 is connected with the extension pipe 232 through the clamping strip 233, and the collecting box 6 is positioned inside the shell 1 corresponding to the turnover cover 14; the redundant conductive silicone fluid flowing out through the through groove 22 of the substrate box 2 still has the value of reutilization, and the specifications of the prepared conductive silicone are different, and the extending height of the baffle 23 in the through groove 22 needs to be changed, so that the flowing position of the conductive silicone fluid is changed along with the change; through the trough pipe 231 that sets up in baffle 23 upper end one side, trough pipe 231 changes its position along with baffle 23, cooperation trough pipe 231 is last to prolong 232 to and install the collection box 6 on the terminal card strip 233 of extension pipe 232, collect the electrically conductive silica gel liquid that flows out in the base plate box 2, the waste of unnecessary composition when having avoided preparation electrically conductive silica gel, thereby promoted the electrically conductive silica gel utilization ratio in the preparation of monocomponent vulcanization electrically conductive silica gel.

As an embodiment of the present invention, the bottom of the collecting box 6 is provided with a heat preservation pipe 61, and both ends of the heat preservation pipe 61 are provided with sliding chutes 62; the collecting box 6 is slidably arranged on the heat preservation pipe 61, and the collecting box 6 is assembled and disassembled from the position of the turnover cover 14 on the shell 1 along the sliding chute 62; in the process of preparing the conductive silica gel, the conductive silica gel on the substrate box 2 needs to be taken out after standing, shaping and vulcanizing, the relative tightness of the spraying chamber needs to be kept in the process, and the conductive silica gel liquid in the collecting box 6 is also influenced by the conductive silica gel liquid, so that the conductive silica gel liquid is damaged to be reused; through setting up the insulating tube 61 in collection box 6 bottom, maintain the temperature of the interior conductive silica gel liquid of collection box 6 for conductive silica gel liquid prevents to keep standstill the change of stereotyping under active state, takes out collection box 6 after the conductive silica gel preparation in base plate box 2 is accomplished, thereby has ensured the reutilization effect of conductive silica gel in the preparation of monocomponent vulcanization conductive silica gel.

As an embodiment of the present invention, the bottom end of the sliding groove 62 facing the inside of the housing 1 is provided with a spring 621, the bottom end of the spring 621 is fixed on the sliding groove 62, and the top end of the spring 621 is in contact with the collecting box 6; the collecting box 6 is pressed and mounted on the clamping strip 233 of the extension pipe 232 through the flip 14 of the shell 1, and when the collecting box 6 is taken out, the flip 14 of the shell 1 is opened, and then the collecting box is difficult to be directly pulled out from the clamping strip 233; through the spring 621 arranged at the bottom end of the sliding chute 62, after the flip cover 14 on the shell 1 is opened, the collecting box 6 is ejected out of the clamping strip 233 by the spring 621, so that the operation of the clamping strip 233 which is separated from the extension tube 232 when the collecting box 6 is detached is simplified, and the using effect of the collecting box 6 in the preparation of single-component vulcanized conductive silica gel is improved.

As an embodiment of the present invention, the supporting column 4 includes a fixed column 41 and a lifting column 42; the fixed column 41 is one end far away from the through groove 22 of the substrate box 2, and a convex block 411 is arranged on the hinged support 21 corresponding to the fixed column 41; the lifting column 42 is provided with a rotating handle 13 for controlling the height of the lifting column 42; the inclination angle of the substrate box 2 is controlled by adjusting the height of the lifting column 42 through the rotating handle 13, the inclination of the substrate box 2 is difficult to adjust intuitively due to the tightness of the shell 1, and when the rotating handle 13 is operated excessively, the substrate box 2 cannot achieve the inclination effect, so that the conductive silica gel liquid cannot flow out by utilizing gravity, and the preparation effect of the conductive silica gel is damaged; the bumps 411 arranged on the corresponding fixed hinged supports 21 have a limiting effect on the substrate box 2, and the substrate box 2 is kept inclined in a required range, so that the use effect of the substrate box 2 in the preparation of the single-component vulcanized conductive silica gel is maintained.

As an embodiment of the present invention, a connecting rod 43 is disposed on the lifting column 42, and a fixing seat 431 is disposed at a terminal of the connecting rod 43; the fixed seat 431 is arranged below the baffle 23; one end of the connecting rod 43 is fixed on the lifting column 42, and the other end of the connecting rod 43 is hinged on the fixed seat 431; the specifications of the prepared conductive silica gel are different, the height position of the baffle 23 in the through groove 22 needs to be adjusted, meanwhile, the inclined position of the substrate box 2 is adjusted, the corresponding relation between the two positions is difficult to control, and the quality of the prepared conductive silica gel is influenced; the connecting rod 43 arranged on the lifting column 42 is hinged to the fixing seat 431 of the baffle plate 23 through the connecting rod 43, and meanwhile, the inclined positions of the baffle plate 23 and the substrate box 2 are adjusted, so that the corresponding relation between the baffle plate 23 and the substrate box 2 is met, and the preparation effect of the single-component vulcanized conductive silica gel is ensured.

When in use, the charging barrel 12 prepared with the conductive silicone fluid is arranged on the material port 11, the conduit of the air pump is connected to the air port 111, the conductive silicone fluid is sprayed on the substrate box 2 by using the spray head 3, and the required finished product is prepared by vulcanization treatment after standing for a period of time; the height between the support columns 4 is adjusted through the support columns 4 arranged below the substrate box 2 in the spraying chamber to enable the substrate box 2 to be in an inclined angle, the coating frame 5 correspondingly installed on the substrate box 2 enables the conductive silica gel liquid to be uniformly coated on the substrate box 2 through the material bag 52 below the spray head 3 through the coating frame 5, and meanwhile, the conductive silica gel liquid flows out through the groove 22 under the action of gravity to enable the conductive silica gel coating attached to the substrate box 2 to be in a uniform thickness; the trough pipe 231 arranged on one side of the upper end of the baffle plate 23, the position of the trough pipe 231 changes along with the baffle plate 23, the trough pipe 231 is matched with the extension pipe 232 on the trough pipe 231, and the collecting box 6 arranged on the clamping strip 233 at the tail end of the extension pipe 232 collects the conductive silica gel liquid flowing out of the substrate box 2, so that the waste of redundant components during the preparation of the conductive silica gel is avoided; the heat preservation pipe 61 is arranged at the bottom of the collection box 6, the temperature of the conductive silica gel liquid in the collection box 6 is maintained, the conductive silica gel liquid is prevented from generating the change of standing and shaping under the active state, and the collection box 6 is taken out after the preparation of the conductive silica gel in the substrate box 2 is finished; the spring 621 arranged at the bottom end of the sliding chute 62 ejects the collecting box 6 from the clamping strip 233 by using the spring 621 after the flip cover 14 on the shell 1 is opened, so that the operation of separating from the clamping strip 233 of the extension pipe 232 when the collecting box 6 is detached is simplified; the bumps 411 arranged on the corresponding fixed hinged supports 21 have a limiting effect on the substrate box 2 and maintain the substrate box 2 to be inclined in a required range; the link 43 provided on the lifting column 42 is hinged to the fixing seat 431 of the shutter 23 via the link 43, and the inclined positions of the shutter 23 and the substrate box 2 are adjusted at the same time, so that the corresponding relationship between the two is satisfied.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.