A method for producing butyl rubber products using butyl capsules

Abstract

The application discloses a method for producing butyl rubber products by using butyl rubber capsules, and particularly relates to the technical field of butyl rubber product production, which comprises the following specific steps: in step one, butyl rubber capsule reclaimed rubber 100-150 parts, EPDM reclaimed rubber 5-15 parts, zinc oxide 3-5 parts, carbon fiber powder 50-80 parts, copper powder 40-60 parts, talcum powder 8-12 parts, vulcanizing agent 20-30 parts are selected as materials. In the application, the mixed material A is poured into a vulcanizing machine, and then the zinc oxide, carbon fiber powder, talcum powder, vulcanizing agent and reinforcing agent are mixed into the vulcanizing machine; high-temperature and high-pressure steam is filled into the vulcanizing machine through pressurization; thus, the impurities in the air can be removed and peeled off, and other gases in the air can also be removed; the butyl rubber products are free of impurities and have better bonding firmness; therefore, the butyl rubber products have better tensile resistance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of butyl rubber product production, more particularly, the present application relates to a method for producing butyl rubber products by using butyl rubber capsules. BACKGROUND

[0002] The butyl rubber capsule has the characteristics of no benzene and chlorinated solvent, no pollution, small toxicity, etc. At the same time, due to the large number of regularly arranged methyl groups in the structure of butyl rubber and polyisobutylene, the sealing performance is excellent, the air permeability is low, the chemical stability is good, the weather resistance, aging resistance, ozone resistance, electrical resistance and heat resistance are excellent. Moreover, the butyl rubber capsule is recycled as part of the circular economy, turning waste into treasure, expanding the source of rubber, saving butyl rubber, and reducing product cost.

[0003] In the existing published literature, the patent with the patent number CN101560316B discloses a method for producing thin butyl rubber products by using butyl rubber capsule reclaimed rubber. The patent aims to restrict the application of butyl rubber capsule reclaimed rubber in thin butyl rubber products due to long vulcanization time. Because butyl rubber capsules are originally vulcanized with resin, after recycling, they need to be vulcanized with sulfur, which takes a long time and affects production efficiency. The butyl rubber products are cheap, have good plasticity, uniform mixing rubber quality, save labor time, and reduce power consumption. The rubber has good flowability and small thermoplasticity, is easy to maintain the original shape during molding and vulcanization, has good appearance and elasticity. However, the patent has the following defects:

[0004] According to the above method for producing butyl rubber products, water and impurities in the external air can enter the butyl rubber products during the vulcanization process, which reduces the roll pressing adhesion strength of the butyl rubber products, resulting in poor tensile resistance of the butyl rubber products. Therefore, a method for producing butyl rubber products by using butyl rubber capsules is needed. SUMMARY

[0005] In order to overcome the above-mentioned defects of the prior art, the present application provides a method for producing butyl rubber products by using butyl rubber capsules.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a method for producing butyl rubber products by using butyl rubber capsules, comprising the following specific steps:

[0007] Step one, when selecting materials, butyl rubber capsule reclaimed rubber 100-150 parts, ternary ethylene-propylene reclaimed rubber 5-15 parts, zinc oxide 3-5 parts, carbon fiber powder 50-80 parts, copper powder 40-60 parts, talc powder 8-12 parts, vulcanizing agent 20-30 parts, reinforcing agent 1-1.8 parts, styrene-diene emulsion copolymer glue 160-170 parts;

[0008] Step two, when crushing, put butyl capsule reclaimed rubber and ternary EP reclaimed rubber into the crusher, keep the speed of the crusher uniform at 50-60 revolutions per minute, heat the inside of the crusher to 50-80 degrees Celsius, and the heating time lasts for 5-10 minutes. Screen the crushed materials through the screen, and then put the screened materials into the storage box;

[0009] Step three, when mixing, pour the materials into the mixer, stir the mixer at a speed of 50-60 revolutions per minute, and 3-5 workers are needed to open it at a time to determine whether the mixing is sufficient. When 3-5 operators agree that the material is mixed sufficiently, stop the operation of the mixer to obtain mixed material A;

[0010] Step four, when vulcanizing, pour mixed material A into the vulcanizing machine, and then mix zinc oxide, carbon fiber powder, talc powder, vulcanizing agent, and reinforcing agent into the vulcanizing machine. Fill high-temperature and high-pressure steam into the vulcanizing machine through pressurization, and the steam has a temperature of 180-220 degrees Celsius and a pressure of 4-10 megapascals. After filling for 5-10 minutes, switch to nitrogen, close the helium inlet, and keep the temperature at 100-120 degrees Celsius and the pressure at 5-10 megapascals for 10-20 minutes to prepare vulcanized mixture A;

[0011] Step five, when water retention, place the vulcanized mixture A in the drying machine. After drying, the water content of the vulcanized mixture A is 7-12% on the outside and 10-12% on the inside, ensuring that the vulcanized mixture A has sufficient adhesion;

[0012] Step six, when extending the pressure, put the vulcanized mixture A into the extension machine for roughening. Use a roll gap of 8-12 millimeters and a silver cylinder temperature of 40-50 degrees Celsius to roll 5-8 times. Then, deliver the roughened vulcanized mixture A to the fine grinding position, set the silver cylinder temperature to 60-70 degrees Celsius, adjust the roll gap to 5-6 millimeters, and roll 5-10 times to produce extended rubber;

[0013] Step seven, when dipping, put the extended rubber into the dipping tank, use the flattening machine to extrude the extended rubber on the upper surface at a pressure of 5-6 megapascals, and then pour the styrene-butadiene emulsion copolymer glue into the dipping tank. The depth of the styrene-butadiene emulsion copolymer glue needs to be above the upper surface of the extended rubber. The dipping waiting time is 30-50 minutes. When the waiting time is reached, the dipped rubber product is obtained;

[0014] Step eight, when the rubber product is put into the four-roll tablet press, the glue is supplied between the upper and middle rollers, and the rubber tablet is discharged between the middle and lower rollers. A visual sensor is used to check whether there are accumulated glue and bubbles on the rubber tablet in real time. If there are, the image database is compared immediately to send an alarm to the operator. The problem is solved within 5-10 minutes. Then, the specified shape of the rubber strip is rolled out on the rubber tablet by using the profiling roller to prepare the rubber strip.

[0015] Step nine, when profiling, the positioning mold is heated to 150-180 degrees Celsius, and the rubber strip is put into the positioning mold. The positioning mold is rolled to limit and extrude the left and right sides of the rubber strip, ensuring that the rubber strip is discharged according to the specified width of 20-40 centimeters and the specified thickness of 5-10 millimeters. The butyl rubber product is prepared.

[0016] Preferably, the butyl capsule reclaimed rubber and the EPDM in step two need to be uniformly dried at 70-90 degrees Celsius for 5-10 minutes in a drying chamber before being crushed. The butyl capsule reclaimed rubber and the EPDM reclaimed rubber need to be turned over every 1 minute.

[0017] Preferably, the crushing time in step two is 5-6 minutes. After five minutes, the speed of the crusher is increased to 80-100 revolutions per minute.

[0018] Preferably, the mesh diameter of the screen in step two is 5-10 millimeters, and the inner wall of the mesh is polished with polishing powder.

[0019] Preferably, the operator needs to open the mixer and check it every three minutes during the mixing process. The checking time should not be less than 2-5 minutes.

[0020] Preferably, the initial temperature of the helium gas input in step four needs to be maintained at 80-100 degrees Celsius and uniformly filled from bottom to top into the vulcanizing machine.

[0021] Preferably, the drying in step five uses microwave drying at 50-60 degrees Celsius for 10-15 minutes. The moisture content of the vulcanized mixture A is detected every 1 minute using a moisture instrument.

[0022] Preferably, the vulcanizing agent is a mixture of sulfur monochloride, magnesium oxide, pentaerythritol, and tetraalkylthiuram disulfide (TRA).

[0023] Preferably, the reinforcing agent is chlorinated polyethylene, which is a high molecular weight material obtained by chlorination substitution reaction of high density polyethylene.

[0024] Preferably, the number of visual sensors in step eight is set to three, and the three visual sensors are arranged in equal intervals from bottom to top on one side of the middle roller.

[0025] Technical effects and advantages of the present application:

[0026] 1、The present application adopts to pour the mixed material A into the vulcanizing machine, then mixes zinc oxide, carbon fiber powder, talc powder, vulcanizing agent and reinforcing agent into the vulcanizing machine, and fills high-temperature and high-pressure steam into the vulcanizing machine, so that the impurities in the air can be removed and peeled off, and other gases in the air can also be removed, so that the butyl rubber product is free of impurities and has better bonding firmness, and thus the butyl rubber product has better tensile resistance.

[0027] 2、The present application adopts microwave drying, and then detects the water content of the first vulcanization mixture A by using a moisture instrument, so as to ensure sufficient adhesion of the butyl rubber product in the vulcanization process, and high-temperature and high-pressure steam is filled into the vulcanizing machine, so as to fully extrude the entire butyl rubber product to ensure that no bubbles are generated, and the effect of removing bubbles in the vulcanization process is better, and the butyl rubber product is more compact.

[0028] 3、The present application adopts to put the delayed pressure rubber after delayed pressure into the dipping tank, extrude the delayed pressure rubber on the upper surface by using a flattening machine, and extrude the delayed pressure rubber flatly and fit it on the inner wall position of the dipping tank, and the styrene-butadiene emulsion copolymer glue liquid needs to be filled to the depth of overflowing the upper surface of the delayed pressure rubber, so that an adhesive rubber layer can be formed on the outside of the butyl rubber product as a whole, thereby improving the tensile resistance of the entire butyl rubber product.

[0029] In summary, through the mutual influence of the above-mentioned multiple effects, firstly, the impurities in the air can be removed and peeled off, and other gases in the air can also be removed, then the entire butyl rubber product is fully extruded to ensure that no bubbles are generated, and finally the styrene-butadiene emulsion copolymer glue liquid needs to be filled to the depth of overflowing the upper surface of the delayed pressure rubber, so that an adhesive rubber layer can be formed on the outside of the butyl rubber product as a whole, and in summary, the tensile resistance of the butyl rubber product can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 The present application is a schematic diagram of the overall operation method. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0032] Embodiment 1;

[0033] A method for producing butyl rubber products by using butyl capsules, comprising the specific steps as follows:

[0034] Step one, when selecting materials, butyl capsule reclaimed rubber 100 parts, EPDM reclaimed rubber 5 parts, zinc oxide 3 parts, carbon fiber powder 50 parts, copper powder 40 parts, talcum powder 8 parts, vulcanizing agent 20 parts, reinforcing agent 1 part, styrene-butadiene emulsion copolymer glue 160 parts;

[0035] Step two, when crushing, butyl capsule reclaimed rubber and EPDM need to be uniformly dried at 70 degrees Celsius for 5 minutes in a drying room before crushing, and the butyl capsule reclaimed rubber and EPDM are turned over every 1 minute interval, the butyl capsule reclaimed rubber and EPDM are put into the crusher, the crusher is kept at a uniform speed at 50 revolutions per minute, the crushing time is 5 minutes, after 5 minutes, the speed of the crusher is increased to 80 revolutions per minute, and the inside of the crusher is heated to 50 degrees Celsius, the heating time lasts for 5 minutes, the crushed materials are screened through a screen with a mesh diameter of 5 mm, and the inner wall of the mesh is polished with polishing powder, so that the screened materials are loaded into the storage box;

[0036] Step three, when mixing, the materials are poured into the mixer, the mixer is stirred at a speed of 50 revolutions per minute, the operator needs to open the mixer to check every 3 minutes, the checking time is not less than 2 minutes, and 3 workers need to determine whether the mixing is sufficient at the same time every time the mixer is opened, and when 3 operators agree that the materials are mixed sufficiently, the mixed material A is obtained, and the mixer can be stopped running;

[0037] Step four, when vulcanizing, mixed material A is poured into the vulcanizing machine, zinc oxide, carbon fiber powder, talcum powder, vulcanizing agent, and reinforcing agent are mixed into the vulcanizing machine, and sulfur monochloride, magnesium oxide, pentaerythritol, and tetra-sulfur bis-pentamethylene thiuram (TRA) are mixed to form a mixture, the reinforcing agent is chlorinated polyethylene, which is a high molecular material obtained by chlorination substitution reaction of high-density polyethylene, high-temperature and high-pressure steam is filled into the vulcanizing machine by pressurization, the steam is filled at a temperature of 180 degrees Celsius and a pressure of 4 megapascals, after 5 minutes of filling, nitrogen and helium are input, the initial temperature of helium input needs to be kept at 80 degrees Celsius, and the helium is uniformly filled from bottom to top in the vulcanizing machine, the helium inlet is closed, the temperature is kept at 100 degrees Celsius, and the pressure is kept at 5 megapascals for 1 minute, and the vulcanizing mixture A is prepared;

[0038] Step five, when the water is stored, the vulcanization mixture A is placed in the dryer and dried by microwave drying at 50 degrees Celsius for 10 minutes. The moisture content of the vulcanization mixture A is detected every 1 minute using a moisture instrument. After drying, the water content of the vulcanization mixture A is 7% on the outside and 10% on the inside, ensuring that the vulcanization mixture A has sufficient adhesion;

[0039] Step six, when the pressure is extended, the vulcanization mixture A is placed in the pressure extending machine for roughening. The roll gap is 8 mm and the silver cylinder temperature is 40 degrees Celsius. The roll is rolled 5 times. Then the roughened vulcanization mixture A is transported to the fine grinding position. The silver cylinder temperature is set to 60 degrees Celsius and the roll gap is adjusted to 5 mm. The roll is rolled 5 times to produce the pressure extending rubber;

[0040] Step seven, when the rubber is immersed, the pressure extending rubber is placed in the rubber dipping tank. The pressure extending rubber is pressed on the upper surface of the pressure extending rubber using a flattening machine at a pressure of 5 megapascals. The pressure extending rubber is pressed flat and attached to the inner wall position of the rubber dipping tank. Then the styrene-butadiene emulsion copolymer glue solution is poured into the rubber dipping tank. The pouring depth of the styrene-butadiene emulsion copolymer glue solution needs to be over the upper surface of the pressure extending rubber. The rubber dipping waiting time is 30 minutes. When the waiting time is reached, the rubber dipping rubber product is produced;

[0041] Step eight, when the tablet is pressed, the rubber dipping rubber product is placed in the four-roll tablet press. The rubber is supplied between the upper and middle rolls of the four-roll tablet press, and the rubber tablet is discharged between the middle and lower rolls. A visual sensor is used to check whether there are accumulated rubber and air bubbles on the rubber tablet in real time. The number of visual sensors is three, and the three visual sensors are arranged equidistantly from bottom to top on the side of the middle roll. If there is a problem, the image database is compared immediately to send an alarm to the operator. The problem is solved within 5 minutes. Then a specified shape of shape pattern is rolled on the tablet rubber using a profiled roller to produce a rubber strip;

[0042] Step nine, when the profile is pressed, the positioning mold is heated to 150 degrees Celsius, and the rubber strip is placed in the positioning mold. The positioning mold is rolled to limit and press the left and right sides of the rubber strip, ensuring that the rubber strip is discharged according to the specified width of 20 cm and the specified thickness of 5 mm. The butyl rubber product is produced.

[0043] Example 2;

[0044] A method for producing a butyl rubber product using a butyl capsule, comprising the following specific steps:

[0045] Step one, when the material is selected, 120 parts of butyl capsule reclaimed rubber, 10 parts of ternary ethylene-propylene reclaimed rubber, 4 parts of zinc oxide, 60 parts of carbon fiber powder, 50 parts of copper powder, 10 parts of talc, 15 parts of vulcanizing agent, 1.2 parts of reinforcing agent, and 165 parts of styrene-butadiene emulsion copolymer glue solution are selected.

[0046] Step two, when crushing, the butyl capsule reclaimed rubber and the ternary ethylene propylene need to be dried in the drying chamber at 80 degrees Celsius for 8 minutes, and the butyl capsule reclaimed rubber and the ternary ethylene propylene need to be turned over every 1 minute interval. Put the butyl capsule reclaimed rubber and the ternary ethylene propylene into the crusher, keep the speed uniform at 55 revolutions per minute, the crushing time is 5 minutes, after 5 minutes, increase the speed of the crusher to 90 revolutions per minute, and heat the inside of the crusher to 60 degrees Celsius, the heating time lasts for 8 minutes. Screen the crushed material through a screen with a mesh diameter of 8 mm, and the inner wall of the mesh is polished with polishing powder. Put the screened material into the storage box;

[0047] Step three, when mixing, pour the material into the mixer, stir at a speed of 40 revolutions per minute, and the operator needs to open the mixer to check every 3 minutes, the checking time is not less than 3 minutes, and 4 workers need to determine whether the mixing is sufficient at the same time every time the mixer is opened. When 4 operators agree that the material is mixed sufficiently, stop the mixer and get mixed material A;

[0048] Step four, when vulcanizing, pour mixed material A into the vulcanizing machine, and mix zinc oxide, carbon fiber powder, talc powder, vulcanizing agent, and reinforcing agent into the vulcanizing machine. Mix sulfur monochloride with magnesium oxide, pentaerythritol, and tetra-sulfur bis-pentamethylene thiuram (TRA) at the same time. The reinforcing agent is chlorinated polyethylene, which is a high molecular material obtained by chlorination substitution reaction of high-density polyethylene. Fill high-temperature and high-pressure steam into the vulcanizing machine by increasing the pressure, and fill steam at a temperature of 200 degrees Celsius and a pressure of 5 megapascals. After 8 minutes of filling, switch to nitrogen and helium gas input. The initial temperature of helium gas input needs to be maintained at 90 degrees Celsius, and the helium gas is uniformly filled from bottom to top in the vulcanizing machine. Close the helium gas inlet. Maintain the temperature at 110 degrees Celsius and the pressure at 5-10 megapascals for 15 minutes to prepare vulcanized mixture A.

[0049] Step five, when water retention, place the vulcanized mixture A in the drying machine and dry it at 55 degrees Celsius for 12 minutes. Detect the water content of the vulcanized mixture A every 1 minute interval using a moisture meter. After drying, the water content of the vulcanized mixture A is 10% on the outside and 11% on the inside, ensuring that the vulcanized mixture A has sufficient adhesion.

[0050] Step six, when extending the pressure, put the vulcanized mixture A into the extension machine for roughening. Use a roller distance of 10 mm and a silver cylinder temperature of 45 degrees Celsius to roll 6 times. Then, send the roughened vulcanized mixture A to the fine grinding position. Set the silver cylinder temperature to 65 degrees Celsius and adjust the roller distance to 5 mm. Roll 8 times to produce extended rubber.

[0051] Step seven, when dipping, the stretched and pressed rubber is put into the dipping tank, and the stretched and pressed rubber is pressed flat on the upper surface of the stretched and pressed rubber by using the flattening machine at a pressure of 5 MPa. In this way, the stretched and pressed rubber is pressed flat and attached to the inner wall position of the dipping tank. Then, the styrene-butadiene emulsion copolymer glue solution is poured into the dipping tank, and the pouring depth of the styrene-butadiene emulsion copolymer glue solution needs to be over the upper surface of the stretched and pressed rubber. The dipping waiting time is 40 minutes. When the waiting time is reached, the dipped rubber product is obtained.

[0052] Step eight, when pressing the sheet, the dipped rubber product is put into the four-roll sheet presser. When pressing the sheet on the four-roll sheet presser, the glue is supplied between the upper roll and the middle roll, and the sheet is discharged between the middle roll and the lower roll. The visual sensor is used to check whether there is accumulated glue and air bubbles on the sheet in real time. The number of visual sensors is three, and the three visual sensors are arranged equidistantly from bottom to top on the side of the middle roll. If the problem occurs, the image database is compared immediately, and an alarm is sent to the operator. The problem is solved within 8 minutes. Then, the specified shape of the shape line is rolled out on the pressed rubber by using the profiled roller, and the rubber strip is prepared.

[0053] Step nine, when profiling, the positioning mold is heated to 160 degrees Celsius, and the rubber strip is put into the positioning mold. With the rolling of the positioning mold, the left and right sides of the rubber strip are limited and pressed, ensuring that the rubber strip is discharged according to the specified width of 30 centimeters and the specified thickness of 8 millimeters. The butyl rubber product is prepared.

[0054] Example 3;

[0055] A method for producing a butyl rubber product by using a butyl capsule, including the following specific steps:

[0056] Step one, when selecting materials, 150 parts of butyl capsule reclaimed rubber, 15 parts of ternary ethylene-propylene reclaimed rubber, 5 parts of zinc oxide, 80 parts of carbon fiber powder, 60 parts of copper powder, 12 parts of talc, 30 parts of vulcanizing agent, 1.8 parts of reinforcing agent, and 170 parts of styrene-butadiene emulsion copolymer glue solution are selected.

[0057] Step two, when crushing, the butyl capsule reclaimed rubber and the ternary ethylene propylene need to pass through the drying chamber to be uniformly dried at 90 degrees Celsius for 10 minutes, and the butyl capsule reclaimed rubber and the ternary ethylene propylene need to be turned over every 1 minute interval. The butyl capsule reclaimed rubber and the ternary ethylene propylene are placed into the crusher, which maintains a uniform speed at 60 revolutions per minute. The crushing time is 6 minutes of rotation. After 5 minutes, the speed of the crusher is increased to 100 revolutions per minute, and the inside of the crusher is heated to 80 degrees Celsius. The heating time lasts for 10 minutes. The crushed material is screened through a screen with a mesh diameter of 10 millimeters, and the inner wall of the mesh is polished with polishing powder. The screened material is loaded into the storage box;

[0058] Step three, when mixing, the material is poured into the mixer, which is stirred at a speed of 60 revolutions per minute. The operator needs to open the mixer and check it every 3 minutes during the mixing process. The checking time is not less than 5 minutes. Five workers need to determine whether the mixing is sufficient at the same time every time the mixer is opened. When the 5 operators unanimously believe that the material is mixed sufficiently, the mixed material A is obtained, and the mixer can be stopped running;

[0059] Step four, when vulcanizing, mixed material A is poured into the vulcanizing machine, and zinc oxide, carbon fiber powder, talc powder, vulcanizing agent, and reinforcing agent are mixed into the vulcanizing machine. Sulfur monochloride is mixed with magnesium oxide, pentaerythritol, and tetra-sulfur bis-pentamethylene thiuram (TRA) at the same time. The reinforcing agent material is chlorinated polyethylene, which is a high molecular material obtained by chlorination substitution reaction of high-density polyethylene. High-temperature and high-pressure steam is filled into the vulcanizing machine through pressurization. The steam is filled at a temperature of 220 degrees Celsius and a pressure of 10 megapascals. After 10 minutes of filling, nitrogen and helium are input. The initial temperature of helium input needs to be maintained at 100 degrees Celsius. The helium is uniformly filled from bottom to top in the vulcanizing machine. The helium inlet is closed. The temperature is maintained at 120 degrees Celsius, and the pressure is maintained at 10 megapascals for 20 minutes. The vulcanized mixture A is prepared;

[0060] Step five, when water retention, the vulcanized mixture A is placed in the drying machine and dried at 60 degrees Celsius for 15 minutes. The moisture content of the vulcanized mixture A is detected every 1 minute interval using a moisture instrument. After drying, the external water content of the vulcanized mixture A is 12%, and the internal water content of the vulcanized mixture A is 12%. It is ensured that the vulcanized mixture A has sufficient adhesion;

[0061] Step six, when extending the pressure, the vulcanized mixture A is placed into the extension machine for roughening. The roll gap is 12 millimeters, and the silver cylinder temperature is 50 degrees Celsius. Roll 8 times. Then the roughened vulcanized mixture A is transported to the fine grinding position. The silver cylinder temperature is set to 70 degrees Celsius, and the roll gap is adjusted to 6 millimeters. Roll 10 times to produce the extended pressure rubber;

[0062] Step seven, when dipping, the stretched and pressed rubber is put into the dipping tank, and the upper surface of the stretched and pressed rubber is pressed by the flattening machine at a pressure of 6 MPa, so that the stretched and pressed rubber is pressed flat and attached to the inner wall of the dipping tank. Then, the styrene-butadiene emulsion copolymer glue solution is poured into the dipping tank, and the pouring depth of the styrene-butadiene emulsion copolymer glue solution needs to be above the upper surface of the stretched and pressed rubber. The dipping waiting time is 50 minutes. When the waiting time is reached, the dipped rubber product is obtained.

[0063] Step eight, when pressing, the dipped rubber product is put into the four-roll sheet pressing machine. The glue is supplied between the upper and middle rollers, and the rubber sheet is discharged between the middle and lower rollers. The visual sensor is used to check whether there is accumulated glue and air bubbles on the rubber sheet in real time. The number of visual sensors is three, and the three visual sensors are arranged equidistantly from bottom to top on the side of the middle roller. If there is a problem, the image database is compared immediately, and an alarm is sent to the operator. The problem is solved within 10 minutes. Then, the specified shape of the shape pattern is rolled on the rubber sheet by the profiled roller to prepare the rubber strip.

[0064] Step nine, when profiling, the positioning mold is heated to 180 degrees Celsius, and the rubber strip is put into the positioning mold. With the rolling of the positioning mold, the left and right sides of the rubber strip are limited and pressed, ensuring that the rubber strip is discharged according to the specified width of 40 cm and the specified thickness of 10 mm. Thus, the butyl rubber product is prepared.

[0065] According to the tests of the butyl rubber products in the above three groups of examples and the market comparison examples, the following data in the steps are obtained. During the test, the comparison of various parameters is as follows:

[0066]

[0067] In summary of the above three groups of examples, example 2 performs more excellently, with the maximum bonding tensile force, the longest bonding time, and the maximum peel strength. Therefore, compared with the market comparison example, the impurities in the air are removed and peeled off in example 2, and the entire butyl rubber product is fully extruded to ensure that no air bubbles are generated. Finally, the pouring depth of the styrene-butadiene emulsion copolymer glue solution needs to be above the upper surface of the stretched and pressed rubber, which effectively improves the tensile resistance of the butyl rubber product.

[0068] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for producing butyl rubber products using butyl capsules, characterized in that: The specific steps are as follows: Step 1: When selecting materials, 100-150 parts of butyl capsule reclaimed rubber, 5-15 parts of EPDM reclaimed rubber, 3-5 parts of zinc oxide, 50-80 parts of carbon fiber powder, 40-60 parts of copper powder, 8-12 parts of talc, 20-30 parts of vulcanizing agent, 1-1.8 parts of reinforcing agent, and 160-170 parts of styrene-butadiene emulsion copolymer glue; Step 2: When crushing, put the butyl capsule regenerated rubber and EPDM regenerated rubber into the grinder, keep the grinder at a constant speed of 50-60 revolutions per minute, and heat the inside of the grinder to 50-80 degrees Celsius for 5-10 minutes. The crushed material is screened through a sieve and the screened material is placed in a storage box. Step 3: During mixing, pour the materials into the mixer and stir at a speed of 50-60 revolutions per minute. Each time the mixer is opened, 3-5 staff members are required to simultaneously determine whether the mixing is sufficient. When 3-5 operators unanimously believe that the materials are fully mixed to obtain mixture A, the mixer can be stopped. Step 4: During vulcanization, the mixture A is poured into the vulcanizer, and then the zinc oxide, carbon fiber powder, talcum powder, vulcanizing agent, and reinforcing agent are mixed into the vulcanizer. The high-temperature and high-pressure steam is poured into the vulcanizer by supercharging, and the steam is filled at a temperature of 180-220 degrees Celsius and a pressure of 4-10 MPa. After filling for 5-10 minutes, nitrogen is switched to be introduced, and the entire helium inlet is closed. The temperature is 100-120 degrees Celsius and the pressure is 5-10 MPa. Insulation and pressure maintenance for 10-20 minutes can complete the preparation of the vulcanized mixture A; Step 5: When retaining moisture, the vulcanized mixture A is placed in a dryer. After drying, the moisture content of the outer portion of the vulcanized mixture A is 7-12%, and the moisture content of the inner portion of the vulcanized mixture A is 10-12%, ensuring that the vulcanized mixture A has sufficient adhesion. Step 6: During rolling, the vulcanized mixture A is placed in a rolling press for rough refining, and the roller spacing is 8-12 mm and the silver cylinder temperature is 40-50 degrees Celsius. The rough-refined mixture A is then transported to the fine refining position, the silver cylinder temperature is set to 60-70 degrees Celsius and the roller spacing is adjusted to 5-6 mm, and rolled 5-10 times to produce the rolled rubber; Step 7: During the dipping process, the pressed rubber is placed in a dipping box, and a flattening machine is used to squeeze the upper surface of the pressed rubber at a pressure of 5-6 MPa, so that the pressed rubber is squeezed flat and adhered to the inner wall of the dipping box. Then, the styrene-butadiene emulsified copolymer glue is poured into the dipping box, and the depth of the styrene-butadiene emulsified copolymer glue needs to cover the upper surface of the pressed rubber. The dipping waiting time is 30-50 minutes. When the waiting time is up, the finished dipped rubber product can be made. Step 8: During sheeting, the finished rubber product is placed in a four-roller sheet press. Glue is supplied between the upper and middle rollers, and the sheet is discharged between the middle roller and the lower roller. A visual sensor is used to check in real time whether there are problems with glue accumulation and bubbles on the sheet. If any, the image database is immediately compared and an alarm is issued to the operator. The problem is resolved within 5-10 minutes, and then a profile roller is used to roll the sheeted rubber into a specified shape and pattern to prepare a rubber strip. Step 9: During the molding process, heat the positioning mold to 150-180 degrees Celsius and place the rubber strip into the positioning mold. As the positioning mold rolls, it can limit and squeeze the left and right sides of the rubber strip to ensure that the rubber strip is discharged according to the specified width of 20-40 cm and the specified thickness of 5-10 mm. The butyl rubber product can be prepared.

2. The method for producing butyl rubber products using butyl capsules according to claim 1, characterized in that: In the step 2, the butyl capsule regenerated rubber and EPDM regenerated rubber need to be evenly dried in a drying chamber at 70-90 degrees Celsius for 5-10 minutes before being crushed, and the butyl capsule regenerated rubber and EPDM regenerated rubber need to be turned over every 1 minute.

3. The method for producing butyl rubber products using butyl capsules according to claim 1, characterized in that: The grinding time in the second step is 5-6 minutes, and after five minutes, the grinding speed is increased to 80-100 revolutions per minute.

4. The method for producing butyl rubber products using butyl capsules according to claim 1, characterized in that: In the step 2, the mesh diameter of the screen is 5-10 mm, and the inner wall of the mesh is polished with polishing powder.

5. The method for producing butyl rubber products using butyl capsules according to claim 1, characterized in that: In the step 3, during the mixing process, the operator needs to open the mixer and check it every three minutes, and the checking time should not be less than 2-5 minutes.

6. The method for producing butyl rubber products using butyl capsules according to claim 1, characterized in that: In step 4, the initial temperature of the helium input needs to be maintained at 80-100 degrees Celsius, and the helium is evenly filled into the vulcanizer from bottom to top.

7. The method for producing butyl rubber products using butyl capsules according to claim 1, characterized in that: In the step 5, the drying is carried out by microwave drying at 50-60 degrees Celsius for 10-15 minutes, and the water content of the vulcanized mixture A is detected once every 1 minute using a moisture meter.

8. The method for producing butyl rubber products using butyl capsules according to claim 1, characterized in that: The vulcanizing agent is prepared by mixing sulfur monochloride, magnesium oxide, pentaerythritol and dipentamethylenethiuram tetrasulfide (TRA).

9. The method for producing butyl rubber products using butyl capsules according to claim 1, characterized in that: The reinforcing agent is made of chlorinated polyethylene, which is a polymer material prepared by a chlorination substitution reaction of high-density polyethylene.

10. The method for producing butyl rubber products using butyl capsules according to claim 1, characterized in that: In the step eight, the number of visual sensors is set to three, and the three visual sensors are equidistantly arranged from bottom to top on the side of the middle roller.

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