CN107722515B - Preparation method and device of high-temperature vermiculite sealing material - Google Patents
Preparation method and device of high-temperature vermiculite sealing material Download PDFInfo
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Abstract
The invention discloses a method and a device for preparing a high-temperature vermiculite sealing material, which belong to the technical field of sealing materials, and the method for preparing the high-temperature vermiculite sealing material comprises the following steps: mixing of Chemically Exfoliated Vermiculite (CEV) and high Temperature Exfoliated Vermiculite (TEV) in a solvent: pouring Chemically Expanded Vermiculite (CEV) and high-Temperature Expanded Vermiculite (TEV) into a mixed solution consisting of any two or more of methyl pyrrolidone (NMP), dimethylformamide, isophorone and water according to a mass ratio, and stirring; and (3) forming a dispersion film: diluting the dispersion liquid by a scraping machine, sending the diluted dispersion liquid into a cooling system, enabling the cooling system to work to enable the dispersion liquid to form crystals, and sending the crystals into a scraping system to scrape off a film; compacting and drying the film: the film is compacted by a compacting disc, and the film is dried when the electric heating tube works. The operation method is simpler, the consumption of raw materials is reduced, the manufacturing efficiency is improved, and the cost is reduced.
Description
Technical Field
The invention relates to the technical field of sealing materials, in particular to a method and a device for preparing a high-temperature vermiculite sealing material.
Background
Expanded polytetrafluoroethylene (ePTFE) gaskets and flexible graphite sealing gaskets are the more common sealing materials used in the static sealing industry at present. The expanded polytetrafluoroethylene gasket is prepared into a sealing packing by processing, stretching into a fibrous shape and weaving, and is an excellent sealing material. The flexible graphite sealing gasket is made of expanded graphite through mechanical compression molding, has good compression resilience and low creep relaxation rate, and is widely applied to the sealing field.
Expanded polytetrafluoroethylene (ePTFE) gaskets can only withstand 240 ℃ service temperatures in an aerobic environment. When the temperature exceeds 400 ℃, the sealing performance of the flexible graphite sealing material is gradually reduced, the edge of the flexible graphite gasket is oxidized and then rapidly diffused to most parts of the material, so that the sealing material is greatly weightless, the sealing failure is caused, and the application of the sealing material in the field of high-temperature flue gas pipeline sealing is greatly restricted. The vermiculite is a phyllosilicate mineral with a 2:1 type structure, can generate a worm-like structure similar to expanded graphite under the action of high temperature and chemical agents, and has good flexural resilience and excellent oxidation resistance, so that the development of the high-temperature vermiculite sealing material can effectively solve the problem of oxidation of expanded polytetrafluoroethylene and flexible graphite-based sealing material in a high-temperature environment.
Because the vermiculite material is non-inflammable, non-fusible and high temperature resistant, the inorganic material has no carbon element and is not combustible because the vermiculite plate takes the expanded vermiculite as the main raw material. The melting point is 1370-1400 ℃, and the maximum service temperature is 1200 ℃; a constant heat-insulating property; the environment-friendly smoke-free and non-toxic inorganic material is free of carbon and sulfur, and does not generate CO2 and SO2 which affect the air in the atmosphere and do not harm human bodies; the vermiculite plate is formed by pressing special fireproof glue and expanded vermiculite, so that the vermiculite plate has high strength and toughness.
The high-temperature vermiculite sealing material is still in a rudiment stage in China, the raw material of vermiculite is mainly exported domestically, and the finished product is rarely applied domestically, but in recent years, the domestic market demand is gradually increased. Developed countries such as the united states, uk and france have been widely used for over 80 years.
Good dimensional stability and weather resistance; excellent resistance to mold and moth; can be sawed, nailed, planed and drilled, is easy to install and construct and has good sound insulation.
Disclosure of Invention
Aiming at the technical problems, the invention provides a preparation method and a device of a high-temperature vermiculite sealing material.
The technical scheme of the invention is as follows: a preparation method of a high-temperature vermiculite sealing material comprises the following steps:
s1: mixing of Chemically Exfoliated Vermiculite (CEV) and high Temperature Exfoliated Vermiculite (TEV) in a solvent: mixing Chemical Expanded Vermiculite (CEV) and high-Temperature Expanded Vermiculite (TEV) according to a mass ratio of 3:7-6:1, dispersing the mixture in a solvent, wherein the material-liquid ratio is 1g:50-200ml, so as to obtain a mixed solution, the solvent is composed of any two or more than two of methyl pyrrolidone (NMP), dimethylformamide, isophorone and water according to any proportion, putting the mixed solution into a stirring box for stirring for 5-10min, adding PVDF accounting for 1-5% (wt) of the mixed solution after stirring is finished, stirring for 5-10min, and finally conveying the formed dispersion liquid into a scraper through a first conveying track; the mixed liquid and the dispersion liquid are separately stirred, so that the quality of the dispersion liquid is ensured, and the raw materials and the mixed liquid solvent are more fully mixed by the simultaneous working of the first-stage stirring blade and the second-stage stirring blade.
S2: and (3) forming a dispersion film: the dispersion liquid sent by the first conveying track passes through a scraping machine, water with the mass ratio of 3:2-1:1 to the dispersion liquid is added through a water inlet to dilute the dispersion liquid, the dispersion liquid is finally sent to a cooling system, the cooling system works to enable the dispersion liquid to form crystals at the temperature of minus 30 ℃ to minus 20 ℃, the crystallized dispersion liquid is sent to a scraping system to be scraped to prepare a film with a specific thickness, and then the film is sent to a compactor through a second conveying track; heat exchange is carried out between the inner walls of the annular pipelines of the scraping machine, so that the dispersion liquid is cooled and crystallized, and finally, the dispersion liquid is scraped by a scraper of a scraper system to form a film.
S3: compacting and drying the film: the film sent into the compactor through the second conveying track is compacted through a compacting disc, the pressure is 15-25 Mpa, meanwhile, an electric heating pipe works, a heating copper pipe generates heat to dry the film, and the drying temperature of the heating copper pipe is 100-230 ℃; the final treatment is carried out on the film, so that the quality of the finished high-temperature vermiculite sealing material is ensured.
Further, the working temperature of the cooling system is 25 ℃ below zero, and the drying temperature of the compactor is 165 ℃.
An apparatus for sealing material of high temperature vermiculite, mainly comprising: agitator tank, driving system, scraper, compactor, the agitator tank install in the driving system top, the agitator tank includes: the stirring device comprises a primary stirring blade, a secondary stirring blade, a motor box, a box body and a bearing, wherein the primary stirring blade is arranged at the top end of the bearing, the secondary stirring blade is arranged on the bearing, the motor box is arranged at the bottom in the stirring box, the bearing is arranged at the top of the motor box, and the box body is arranged above the motor box; the power system comprises: the power device is positioned in the power system, the shell is arranged on the outer surface of the power device, and the driving device is arranged on the right side of the shell; the scraping machine is installed at the driving system right-hand member and is connected with the agitator tank right side, and the scraping machine includes: the water inlet is arranged on the upper surface of the first conveying track, the cooling system is arranged on the right side of the first conveying track, the scraper system is arranged at the bottom of the cooling system, the water outlet system is arranged at the bottom of the scraper system, and the second conveying track is arranged on the right side of the scraper system; the compactor is installed in the scraper right-hand member, and the compactor includes: the electric heating device comprises a compaction disc, a compaction motor, a rotary disc, a rotary shaft, a support, a rotary shaft motor, a heating copper pipe, a power supply, electric heating pipes and protectors, wherein the support, the rotary shaft motor, the power supply, the electric heating pipes and the protectors are respectively two in number, the two rotary shaft motors are respectively installed on the outer side of the top of the support, the two power supplies are respectively installed on the outer side of the bottom of the support, the two electric heating pipes are respectively installed on the bottom of the support, the two protectors are respectively installed below the two electric heating pipes, the heating copper pipe is installed between the two electric heating pipes, the rotary shaft is installed between the two rotary shaft motors, the rotary.
Further, the cooling system adopts an annular pipeline; the dispersion in the scraper can be sufficiently cooled and crystallized.
Furthermore, a heating device is arranged in the water outlet system; the residual crystals in the scraper can be heated and liquefied to be discharged.
Further, the compaction disc is of a semicircular structure; the volume and the weight of the device are reduced.
Further, the protector stops working when the temperature of the heating copper pipe exceeds 230 ℃; prevent damage to the film quality caused by excessive temperature and protect the safety of the device and operators.
Compared with the prior art, the invention has the beneficial effects that:
1. the high-temperature vermiculite sealing material prepared by the method has good water resistance, the traditional vermiculite forming material has the problem of poor water resistance, and the material prepared by the method does not deform after being soaked in water at 25 ℃ for 1 hour.
2. The high-temperature vermiculite sealing material prepared by the method has low weight loss rate at high temperature: the weight loss rate at 500 ℃ is less than 3 percent, and the weight loss rate at 900 ℃ is less than 6 percent.
3. The orientation of the vermiculite flake is good, more than 90% of the vermiculite flake in the material is parallel to the surface of the material, so that the material has better elasticity and sealing performance.
4. Compared with the prior art that vermiculite is used for preparing the high-temperature-resistant sealing material, the operation method is simpler, the consumption of raw materials is reduced, the manufacturing efficiency is improved, and the cost is reduced.
5. The device designed by the invention is simple and convenient, has lower manufacturing cost, and is suitable for wide popularization and application.
Drawings
FIG. 1 is a view showing the structure of the apparatus of the present invention.
The device comprises a stirring box 1, a power system 2, a scraping machine 3, a compacting machine 4, a first-stage stirring blade 101, a second-stage stirring blade 102, a motor box 103, a box body 104, a bearing 105, a shell 201, a power device 202, a driving device 203, a water inlet 301, a cooling system 302, a first conveying crawler belt 303, a scraper blade 304, a water outlet system 305, a second conveying crawler belt 306, a compacting disc 401, a compacting motor 402, a rotating disc 403, a rotating shaft 404, a rotating shaft 405, a rotating shaft motor 406, a heating copper pipe 407, a power supply 408, an electric heating pipe 409 and a protector 410.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments thereof for better understanding the advantages of the invention.
Example 1
The technical scheme of the invention is as follows: a preparation method of a high-temperature vermiculite sealing material comprises the following steps:
s1: mixing of Chemically Exfoliated Vermiculite (CEV) and high Temperature Exfoliated Vermiculite (TEV) in a solvent: mixing Chemically Expanded Vermiculite (CEV) and high-Temperature Expanded Vermiculite (TEV) according to a mass ratio of 3:7, and dispersing the mixture in a solvent, wherein the material-liquid ratio is 1g:50ml, so as to obtain a mixed solution, the solvent is composed of any two or more than two of methyl pyrrolidone (NMP), dimethyl formamide, isophorone and water according to any ratio, the mixed solution is put into a stirring box 1 for stirring for 5min, PVDF accounting for 1% (wt) of the mixed solution is added after stirring is finished for stirring for 5min, and finally the formed dispersion liquid is conveyed into a scraper 3 through a first conveying track 303; the mixed liquid and the dispersion liquid are separately stirred, the quality of the dispersion liquid is guaranteed, the primary stirring blade 101 and the secondary stirring blade 102 work simultaneously, and the raw materials and the mixed liquid solvent are more fully mixed.
S2: and (3) forming a dispersion film: the dispersion liquid sent by the first conveying crawler belt 303 passes through a scraping machine 3, water with the mass ratio of 3:2 to the dispersion liquid is added through a water inlet 301 for dilution, and finally the dispersion liquid is sent to a cooling system 302, the cooling system 302 works to enable the dispersion liquid to form crystals at the temperature of-30 ℃, the crystallized dispersion liquid is sent to a scraping system 304 for scraping to prepare a film with a specific thickness, and then the film is sent to a compactor 4 through a second conveying crawler belt 306; heat exchange is carried out between the inner walls of the annular pipelines of the scraper 3, so that the dispersion liquid is cooled and crystallized, and finally, the dispersion liquid is scraped by a scraper of a scraper system 304 to form a film.
S3: compacting and drying the film: the film sent into the compactor 4 through the second conveying track 306 is compacted through the compacting disc 401, the pressure is 15Mpa, meanwhile, the electric heating pipe 409 works, the heating copper pipe 407 generates heat to dry the film, and the drying temperature of the heating copper pipe 407 is 100 ℃; the final treatment is carried out on the film, so that the quality of the finished high-temperature vermiculite sealing material is ensured.
The device for sealing the high-temperature vermiculite mainly comprises: agitator tank 1, driving system 2, scraper 3, compactor 4, agitator tank 1 installs in driving system 2 top, and agitator tank 1 includes: the stirring device comprises a primary stirring blade 101, a secondary stirring blade 102, a motor box 103, a box body 104 and a bearing 105, wherein the primary stirring blade 101 is installed at the top end of the bearing 105, the secondary stirring blade 102 is installed on the bearing 105, the motor box 103 is installed at the bottom in the stirring box 1, the bearing 105 is installed at the top of the motor box 103, and the box body 104 is installed above the motor box 103; the power system 2 includes: the power system comprises a shell 201, a power device 202 and a driving device 203, wherein the power device 202 is positioned in the power system 2, the shell 201 is installed on the outer surface of the power device 202, and the driving device 203 is installed on the right side of the shell 201; scraping machine 3 installs in 2 right-hand members of driving system and is connected on 1 right sides of agitator tank, and scraping machine 3 includes: the water inlet 301 is arranged on the upper surface of the first conveying track 303, the cooling system 302 is arranged on the right side of the first conveying track 303, the scraper system 304 is arranged at the bottom of the cooling system 302, the water outlet system 305 is arranged at the bottom of the scraper system 304, and the second conveying track 306 is arranged on the right side of the scraper system 304; compactor 4 is installed in scraper 3 right-hand member, and compactor 4 includes: the device comprises a compaction disc 401, a compaction motor 402, a turntable 403, a rotating shaft 404, a support 405, a rotating shaft motor 406, a heating copper pipe 407, a power supply 408, electric heating pipes 409 and protectors 410, wherein the number of the support 405, the rotating shaft motor 406, the power supply 408, the electric heating pipes 409 and the protectors 410 is two respectively, the two rotating shaft motors 406 are respectively arranged on the outer side of the top of the support 405, the two power supplies 408 are respectively arranged on the outer side of the bottom of the support 405, the two electric heating pipes 409 are respectively arranged at the bottom of the support 405, the two protectors 410 are respectively arranged below the two electric heating pipes 409, the heating copper pipe 407 is arranged between the two electric heating pipes 409, the rotating shaft 404 is arranged between the two rotating shaft motors 406, the turntable; the cooling system 302 employs an annular duct; the dispersion liquid in the scraping machine 3 can be fully cooled and crystallized; a heating device is arranged in the water outlet system 305; residual crystals in the scraping machine 3 can be heated and liquefied to be discharged; the compaction disc 401 adopts a semicircular structure; the volume and the weight of the device are reduced; the protector 410 stops working when the heating copper tube 407 exceeds 230 ℃; prevent damage to the film quality caused by excessive temperature and protect the safety of the device and operators.
Example 2
The technical scheme of the invention is as follows: a preparation method of a high-temperature vermiculite sealing material comprises the following steps:
s1: mixing of Chemically Exfoliated Vermiculite (CEV) and high Temperature Exfoliated Vermiculite (TEV) in a solvent: mixing Chemically Expanded Vermiculite (CEV) and high-Temperature Expanded Vermiculite (TEV) according to a mass ratio of 2:1, and dispersing the mixture in a solvent, wherein the material-liquid ratio is 1g:120ml, so as to obtain a mixed solution, the solvent is composed of any two or more than two of methyl pyrrolidone (NMP), dimethyl formamide, isophorone and water according to any ratio, the mixed solution is put into a stirring box 1 for stirring for 7min, PVDF accounting for 3 wt% of the mixed solution is added for stirring after the stirring is finished, the stirring time is 7min, and finally the formed dispersion liquid is conveyed into a scraper 3 through a first conveying track 303; the mixed liquid and the dispersion liquid are separately stirred, the quality of the dispersion liquid is guaranteed, the primary stirring blade 101 and the secondary stirring blade 102 work simultaneously, and the raw materials and the mixed liquid solvent are more fully mixed.
S2: and (3) forming a dispersion film: the dispersion liquid sent by the first conveying crawler belt 303 passes through a scraping machine 3, water with the mass ratio of 5:4 to the dispersion liquid is added through a water inlet 301 for dilution, finally the dispersion liquid is sent to a cooling system 302, the cooling system 302 works to enable the dispersion liquid to form crystals at minus 25 ℃, the crystallized dispersion liquid is sent to a scraping system 304 for scraping to prepare a film with a specific thickness, and then the film is sent to a compactor 4 through a second conveying crawler belt 306; heat exchange is carried out between the inner walls of the annular pipelines of the scraper 3, so that the dispersion liquid is cooled and crystallized, and finally, the dispersion liquid is scraped by a scraper of a scraper system 304 to form a film.
S3: compacting and drying the film: the film sent into the compactor 4 through the second conveying track 306 is compacted through the compacting disc 401, the pressure is 20Mpa, meanwhile, the electric heating pipe 409 works, the heating copper pipe 407 generates heat to dry the film, and the drying temperature of the heating copper pipe 407 is 165 ℃; the final treatment is carried out on the film, so that the quality of the finished high-temperature vermiculite sealing material is ensured.
The device for sealing the high-temperature vermiculite mainly comprises: agitator tank 1, driving system 2, scraper 3, compactor 4, agitator tank 1 installs in driving system 2 top, and agitator tank 1 includes: the stirring device comprises a primary stirring blade 101, a secondary stirring blade 102, a motor box 103, a box body 104 and a bearing 105, wherein the primary stirring blade 101 is installed at the top end of the bearing 105, the secondary stirring blade 102 is installed on the bearing 105, the motor box 103 is installed at the bottom in the stirring box 1, the bearing 105 is installed at the top of the motor box 103, and the box body 104 is installed above the motor box 103; the power system 2 includes: the power system comprises a shell 201, a power device 202 and a driving device 203, wherein the power device 202 is positioned in the power system 2, the shell 201 is installed on the outer surface of the power device 202, and the driving device 203 is installed on the right side of the shell 201; scraping machine 3 installs in 2 right-hand members of driving system and is connected on 1 right sides of agitator tank, and scraping machine 3 includes: the water inlet 301 is arranged on the upper surface of the first conveying track 303, the cooling system 302 is arranged on the right side of the first conveying track 303, the scraper system 304 is arranged at the bottom of the cooling system 302, the water outlet system 305 is arranged at the bottom of the scraper system 304, and the second conveying track 306 is arranged on the right side of the scraper system 304; compactor 4 is installed in scraper 3 right-hand member, and compactor 4 includes: the device comprises a compaction disc 401, a compaction motor 402, a turntable 403, a rotating shaft 404, a support 405, a rotating shaft motor 406, a heating copper pipe 407, a power supply 408, electric heating pipes 409 and protectors 410, wherein the number of the support 405, the rotating shaft motor 406, the power supply 408, the electric heating pipes 409 and the protectors 410 is two respectively, the two rotating shaft motors 406 are respectively arranged on the outer side of the top of the support 405, the two power supplies 408 are respectively arranged on the outer side of the bottom of the support 405, the two electric heating pipes 409 are respectively arranged at the bottom of the support 405, the two protectors 410 are respectively arranged below the two electric heating pipes 409, the heating copper pipe 407 is arranged between the two electric heating pipes 409, the rotating shaft 404 is arranged between the two rotating shaft motors 406, the turntable; the cooling system 302 employs an annular duct; the dispersion liquid in the scraping machine 3 can be fully cooled and crystallized; a heating device is arranged in the water outlet system 305; residual crystals in the scraping machine 3 can be heated and liquefied to be discharged; the compaction disc 401 adopts a semicircular structure; the volume and the weight of the device are reduced; the protector 410 stops working when the heating copper tube 407 exceeds 230 ℃; prevent damage to the film quality caused by excessive temperature and protect the safety of the device and operators.
Example 3
The technical scheme of the invention is as follows: a preparation method of a high-temperature vermiculite sealing material comprises the following steps:
s1: mixing of Chemically Exfoliated Vermiculite (CEV) and high Temperature Exfoliated Vermiculite (TEV) in a solvent: mixing Chemically Expanded Vermiculite (CEV) and high-Temperature Expanded Vermiculite (TEV) according to a mass ratio of 6:1, and dispersing the mixture in a solvent, wherein the material-liquid ratio is 1g:200ml, so as to obtain a mixed solution, the solvent is composed of any two or more than two of methyl pyrrolidone (NMP), dimethyl formamide, isophorone and water according to any ratio, the mixed solution is put into a stirring box 1 for stirring for 10min, PVDF accounting for 5 wt% of the mixed solution is added after stirring is finished for stirring for 10min, and finally the formed dispersion liquid is conveyed into a scraper 3 through a first conveying track 303; the mixed solution and the dispersion solution are separately stirred, so that the quality of the dispersion solution is ensured, and the raw materials and the solvent of the mixed solution are more fully mixed by the simultaneous work of the primary stirring blade 101 and the secondary stirring blade 102;
s2: and (3) forming a dispersion film: the dispersion liquid sent by the first conveying crawler belt 303 passes through a scraping machine 3, water with the mass ratio of 1:1 to the dispersion liquid is added through a water inlet 301 for dilution, and finally the dispersion liquid is sent to a cooling system 302, the cooling system 302 works to enable the dispersion liquid to form crystals at the temperature of-20 ℃, the crystallized dispersion liquid is sent to a scraping system 304 for scraping to prepare a film with a specific thickness, and then the film is sent to a compactor 4 through a second conveying crawler belt 306; heat exchange is carried out between the inner walls of the annular pipelines of the scraper 3, so that the dispersion liquid is cooled and crystallized, and finally, the dispersion liquid is scraped by a scraper of a scraper system 304 to form a film.
S3: compacting and drying the film: the film sent into the compactor 4 through the second conveying track 306 is compacted through the compacting disc 401, the pressure is 25Mpa, meanwhile, the electric heating pipe 409 works, the heating copper pipe 407 generates heat to dry the film, and the drying temperature of the heating copper pipe 407 is 230 ℃; the final treatment is carried out on the film, so that the quality of the finished high-temperature vermiculite sealing material is ensured.
The device for sealing the high-temperature vermiculite mainly comprises: agitator tank 1, driving system 2, scraper 3, compactor 4, agitator tank 1 installs in driving system 2 top, and agitator tank 1 includes: the stirring device comprises a primary stirring blade 101, a secondary stirring blade 102, a motor box 103, a box body 104 and a bearing 105, wherein the primary stirring blade 101 is installed at the top end of the bearing 105, the secondary stirring blade 102 is installed on the bearing 105, the motor box 103 is installed at the bottom in the stirring box 1, the bearing 105 is installed at the top of the motor box 103, and the box body 104 is installed above the motor box 103; the power system 2 includes: the power system comprises a shell 201, a power device 202 and a driving device 203, wherein the power device 202 is positioned in the power system 2, the shell 201 is installed on the outer surface of the power device 202, and the driving device 203 is installed on the right side of the shell 201; scraping machine 3 installs in 2 right-hand members of driving system and is connected on 1 right sides of agitator tank, and scraping machine 3 includes: the water inlet 301 is arranged on the upper surface of the first conveying track 303, the cooling system 302 is arranged on the right side of the first conveying track 303, the scraper system 304 is arranged at the bottom of the cooling system 302, the water outlet system 305 is arranged at the bottom of the scraper system 304, and the second conveying track 306 is arranged on the right side of the scraper system 304; compactor 4 is installed in scraper 3 right-hand member, and compactor 4 includes: the device comprises a compaction disc 401, a compaction motor 402, a turntable 403, a rotating shaft 404, a support 405, a rotating shaft motor 406, a heating copper pipe 407, a power supply 408, electric heating pipes 409 and protectors 410, wherein the number of the support 405, the rotating shaft motor 406, the power supply 408, the electric heating pipes 409 and the protectors 410 is two respectively, the two rotating shaft motors 406 are respectively arranged on the outer side of the top of the support 405, the two power supplies 408 are respectively arranged on the outer side of the bottom of the support 405, the two electric heating pipes 409 are respectively arranged at the bottom of the support 405, the two protectors 410 are respectively arranged below the two electric heating pipes 409, the heating copper pipe 407 is arranged between the two electric heating pipes 409, the rotating shaft 404 is arranged between the two rotating shaft motors 406, the turntable; the cooling system 302 employs an annular duct; the dispersion liquid in the scraping machine 3 can be fully cooled and crystallized; a heating device is arranged in the water outlet system 305; residual crystals in the scraping machine 3 can be heated and liquefied to be discharged; the compaction disc 401 adopts a semicircular structure; the volume and the weight of the device are reduced; the protector 410 stops working when the heating copper tube 407 exceeds 230 ℃; prevent damage to the film quality caused by excessive temperature and protect the safety of the device and operators.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. An apparatus for sealing material of vermiculite at high temperature, characterized in that it essentially comprises: agitator tank (1), driving system (2), scraper (3), compactor (4), agitator tank (1) install in driving system (2) top, agitator tank (1) includes: the stirring device comprises a primary stirring blade (101), a secondary stirring blade (102), a motor box (103), a box body (104) and a bearing (105), wherein the primary stirring blade (101) is installed at the top end of the bearing (105), the secondary stirring blade (102) is installed on the bearing (105), the motor box (103) is installed at the bottom in the stirring box (1), the bearing (105) is installed at the top of the motor box (103), and the box body (104) is installed above the motor box (103); the power system (2) includes: the power system comprises a shell (201), a power device (202) and a driving device (203), wherein the power device (202) is positioned in the power system (2), the shell (201) is installed on the outer surface of the power device (202), and the driving device (203) is installed on the right side of the shell (201); scraping machine (3) are installed in driving system (2) right-hand member and are connected with agitator tank (1) right side, and scraping machine (3) include: the water inlet (301), the cooling system (302), the first conveying track (303), the scraper system (304), the water outlet system (305) and the second conveying track (306), wherein the water inlet (301) is installed on the upper surface of the first conveying track (303), the cooling system (302) is installed on the right side of the first conveying track (303), the scraper system (304) is installed at the bottom of the cooling system (302), the water outlet system (305) is installed at the bottom of the scraper system (304), and the second conveying track (306) is installed on the right side of the scraper system (304); the compactor (4) is installed at the right end of the scraper (3), and the compactor (4) comprises: the device comprises a compaction disc (401), compaction motors (402), a turntable (403), a rotating shaft (404), a support (405), a rotating shaft motor (406), heating copper pipes (407), a power supply (408), electric heating pipes (409) and protectors (410), wherein the support (405), the rotating shaft motor (406), the power supply (408), the electric heating pipes (409) and the protectors (410) are respectively two, the two rotating shaft motors (406) are respectively arranged at the outer side of the top of the support (405), the two power supplies (408) are respectively arranged at the outer side of the bottom of the support (405), the two electric heating pipes (409) are respectively arranged at the bottom of the support (405), the two protectors (410) are respectively arranged below the two electric heating pipes (409), the heating copper pipes (407) are arranged between the two electric heating pipes (409), the rotating shaft (404) is arranged between the two rotating shaft motors (406), the turntable (, the compaction motor (402) is arranged on the rotary disc (403), and the compaction disc (401) is arranged on the outer ring of the rotary disc (403).
2. An apparatus for sealing material for vermiculite according to claim 1, wherein said cooling system (302) is in the form of an annular duct.
3. An apparatus for sealing material for vermiculite according to claim 1, wherein heating means is provided in said water outlet system (305).
4. An apparatus for sealing material for vermiculite according to claim 1, wherein said cooling system (302) is in the form of an annular duct; the compaction disc (401) adopts a semicircular structure.
5. A device for sealing material of vermiculite according to claim 1, wherein said protector (410) stops working when said heat generating copper tube (407) exceeds 230 ℃.
6. A method of making a high temperature vermiculite sealing material using the apparatus of claim 1, comprising the steps of:
s1: mixing of Chemically Exfoliated Vermiculite (CEV) and high Temperature Exfoliated Vermiculite (TEV) in a solvent: mixing Chemical Expanded Vermiculite (CEV) and high-Temperature Expanded Vermiculite (TEV) according to a mass ratio of 3:7-6:1, dispersing the mixture in a solvent, wherein the material-liquid ratio is 1g:50-200ml, obtaining a mixed solution, the solvent is composed of any two or more than two of methyl pyrrolidone (NMP), dimethylformamide, isophorone and water according to any proportion, putting the mixed solution into a stirring box (1) for stirring for 5-10min, adding PVDF accounting for 1-5 wt% of the mixed solution after stirring is finished, stirring for 5-10min, and finally forming a dispersion liquid and conveying the dispersion liquid into a scraper (3) through a first conveying track (303);
s2: and (3) forming a dispersion film: the dispersion liquid fed by the first conveying track (303) passes through a scraping machine (3), water with the mass ratio of 3:2-1:1 to the dispersion liquid is added through a water inlet (301) to dilute the dispersion liquid, the diluted dispersion liquid is finally fed into a cooling system (302), the cooling system (302) works to enable the dispersion liquid to form crystals at the temperature of minus 30 ℃ to minus 20 ℃, the crystallized dispersion liquid is fed into a scraper system (304) to be scraped to prepare a film with a specific thickness, and then the film is fed into a compactor (4) through a second conveying track (306);
s3: compacting and drying the film: the film sent into the compactor (4) through the second conveying track (306) is compacted through a compacting disc (401), the pressure is 15-25 Mpa, meanwhile, an electric heating pipe (409) works, a heating copper pipe (407) heats to dry the film, and the drying temperature of the heating copper pipe (407) is 100-230 ℃.
7. The method for preparing the high-temperature vermiculite sealing material according to claim 6, wherein the working temperature of the cooling system is 25 ℃ below zero, and the drying temperature of the compactor (4) is 165 ℃.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105531341A (en) * | 2013-08-01 | 2016-04-27 | 霓佳斯株式会社 | Sheet composed of exfoliated clay mineral and method for producing same |
| CN107057138A (en) * | 2017-04-21 | 2017-08-18 | 南宁市钱隆汽车租赁有限公司 | Automobile door sealing rubber |
| CN107188453A (en) * | 2017-05-23 | 2017-09-22 | 武汉理工大学 | A kind of preparation method of vermiculite based high-temp-resistant encapsulant |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105531341A (en) * | 2013-08-01 | 2016-04-27 | 霓佳斯株式会社 | Sheet composed of exfoliated clay mineral and method for producing same |
| CN107057138A (en) * | 2017-04-21 | 2017-08-18 | 南宁市钱隆汽车租赁有限公司 | Automobile door sealing rubber |
| CN107188453A (en) * | 2017-05-23 | 2017-09-22 | 武汉理工大学 | A kind of preparation method of vermiculite based high-temp-resistant encapsulant |
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