CN112063058A - Low-VOC rubber sealing strip and preparation method thereof - Google Patents
Low-VOC rubber sealing strip and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a low VOC rubber sealing strip and a preparation method thereof, wherein the low VOC rubber sealing strip comprises EPDM, carbon black, active calcium, a softening agent, active zinc oxide, stearic acid, polyethylene glycol, S, an active agent and a foaming agent in a certain ratio; the preparation method of the low-VOC rubber sealing strip comprises the steps of banburying in an internal mixer, mixing with a dispersion accelerator, vulcanizing in the internal mixer, extruding and vulcanizing, and fully dispersing VOC through a continuous vulcanization mode and a cooling relaxation process to obtain the low-VOC rubber sealing strip.
Description
Technical Field
The invention relates to an automobile sealing strip, in particular to a low-VOC rubber sealing strip and a preparation method thereof.
Background
The automobile is a dense and indiscriminate vehicle in modern society, and the quality of air in the automobile as an important aspect of environmental protection and safety of the automobile can directly influence the consumer market, so that the use of the low-Volatility Organic Compound (VOC) interior material is a method for fundamentally solving the problem that the content of VOC in the automobile exceeds the standard. At present, the automobile sealing strip is mostly prepared by adopting a thermoplastic elastomer or a mixture of the thermoplastic elastomer and other high polymer materials, and the used additive often causes the problem of overhigh VOC in a finished product under the traditional preparation process, so that the automobile sealing strip is not beneficial to environmental protection and human health. Therefore, improving the component proportion of the product and exploring a new production process have important significance for promoting the technical innovation of the technical field and the ecological development of the automobile consumption market.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a low-VOC rubber sealing strip and a preparation method thereof.
In order to achieve the purpose, the technical scheme adopted by the invention is that the low-VOC rubber seal comprises the following components in parts by weight:
in one embodiment of the invention, the promoter comprises 3-5 parts of ZDPPD-50, 2-3 parts of CLD-80 and 1-2 parts of TBZTD-70.
In one embodiment of the present invention, the softening agent is 2070P white oil; the foaming agent is 0 BSH-50A.
In one embodiment of the invention, the deodorant also comprises 2-3.5 parts of deodorant.
In one embodiment of the invention, the sealing strip is prepared from the following components in parts by weight: 100 parts of EPDM (ethylene-propylene-diene monomer), 70 parts of carbon black, 40 parts of superfine active calcium, 70 parts of 2070P white oil, 5 parts of nano active zinc oxide, 2 parts of stearic acid, 2 parts of polyethylene glycol, 0.8 part of S, 5 parts of ZDPPD-50, 3 parts of CLD-80, 1 part of TBZTD-70, 1-1.5 parts of MBT-80 and 3.5-5 parts of foaming agent.
A preparation method of the low VOC rubber sealing strip sequentially comprises the following steps:
smelting A: adding EPDM, stearic acid, zinc oxide and polyethylene glycol according to formula components in an internal mixer, and mixing for 30-60 s; then adding carbon black and a softening agent, mixing to the temperature of 150 ℃ and 160 ℃ for rubber removal; cooling to 130-140 ℃ in an open mill, adding an accelerant and mixing for 2-3 min; taking out the sheet, and cooling the sheet in a rubber cooling line to obtain rubber A;
b smelting: firstly, adding A for mixing and mixing in an internal mixer, then adding S and a foaming agent for mixing and discharging rubber; cooling the discharged sheets in a glue cooling line, and collecting and warehousing the discharged sheets;
extrusion and vulcanization: and extruding the rubber material after B smelting by an extruder, cooling and forming after sequentially carrying out high-temperature box vulcanization, microwave vulcanization and hot air vulcanization, and cutting at fixed length.
The high-temperature mixing mode is favorable for volatilization of low-molecular harmful gases. The accelerator is added in advance at the high temperature of 140 ℃ of the open mill 130 ℃, so that the accelerator can be uniformly dispersed, a pretreatment effect is realized for subsequent vulcanization, and the high temperature is more favorable for odor emission.
In one embodiment of the invention, the sheet A is cooled, then is collected and placed for 8-10 hours to obtain rubber A, and then is transferred to B for vulcanization; and B, after the smelting material is put into a warehouse, the residence time in the warehouse is 18-24h, the temperature in the warehouse is 20-25 ℃, the humidity is less than or equal to 70%, and ventilation is performed once every 1 h. And the rubber material after B smelting is hung and parked in a storehouse, and is ventilated, so that VOC volatilization is facilitated.
In one embodiment of the invention, the B mixing is carried out by firstly adding the A mixing rubber into an internal mixer for mixing for 60-90S, the mixing time after adding the S and the foaming agent is 2-3min, and the temperature is 80-90 ℃.
In one embodiment of the invention, the temperature in the high-temperature box is 370-; the extruded rubber material passes through a high temperature box, a microwave box and a hot air box in sequence at the speed of 8-10 m/min. High-temperature, microwave and hot air are adopted for continuous vulcanization, and various accelerators and vulcanizing agents are fully reacted. Wherein, the high temperature in the first section of high-temperature box plays a role in quickly shaping the product, and then the product is fully vulcanized through the process conditions of each subsequent stage. In addition, the deodorant can decompose the VOC into CO2 and emit water under the action of ultraviolet light and infrared light. And then the air cooling box gives off and cools off the product, so that the VOC smell of the product is lower.
In one embodiment of the invention, the cut sealing strip is diffused in a hanging baking mode, specifically, the cut sealing strip is hung on a frame and baked in an oven, the baking temperature is 70-80 ℃, the baking time is 3.5-4.5h, and the air is exhausted every 1h to fully diffuse the peculiar smell of the rubber strip.
The technical scheme has the following beneficial effects:
the invention firstly carries out banburying in an internal mixer, so that the accelerant and the filler are fully dispersed and mixed, then the internal mixer is vulcanized, finally extrusion vulcanization is carried out, and VOC is fully dispersed through a continuous vulcanization mode and a cooling relaxation process, so that the low-VOC rubber sealing strip is obtained.
According to the invention, through the design of the components in the component formula and the proportion of the components, the ethylene propylene diene monomer rubber can be fully crosslinked, and the low VOC property of the sealing strip is ensured. The improved production process of the sealing strip aims at related substances adopted in a component formula, and VOC can be fully emitted in each preparation step by controlling a feeding mode, an innovative vulcanization mode and a cooling relaxation mode, so that a final finished product has a lower VOC value.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1
A method for preparing low VOC rubber sealing strip, firstly, A is to put 100 parts of EPDM9950C, 2 parts of stearic acid, 5 parts of nano active zinc oxide and 2 parts of polyethylene glycol into an internal mixer, press a top bolt and mix for 60 s; then adding 70 parts of carbon black HS25 and 70 parts of white oil 2070P, mixing to 150 ℃, fully combining and uniformly dispersing the filler, and then discharging the rubber; cooling to 130 ℃ in an open mill, adding 5 parts of ZDPPD-50, 3 parts of CLD-80, 1 part of TBZTD-70 and 1 part of MBT-80, mixing for 2-3min, and finishing feeding; and (4) discharging the slices, performing air cooling for 10 minutes on a glue cooling line, collecting the materials, standing for 8 hours, and transferring to a B smelting and vulcanizing procedure.
The B smelting and vulcanizing process specifically comprises the following steps: firstly adding the rubber material after the A refining into an internal mixer, mixing for 1 minute, then adding 0.8 part of S and 4 parts of 0BSH-50A, mixing for 3 minutes at 80 ℃, and discharging rubber; and (5) taking out the slices, cooling the slices for 10 minutes in a glue cooling line, collecting the slices, detecting the slices to be qualified, and warehousing the slices. Standing in a warehouse for 24 hours, and allowing the rubber to be diffused on a suspension vehicle, wherein the temperature is 20-25 ℃, the humidity is less than or equal to 70%, and ventilation is performed once every 1 hour.
And finally, extruding and vulcanizing: and extruding the rubber material obtained by the B refining through an extruder, and sequentially carrying out continuous vulcanization of high-temperature vulcanization, microwave vulcanization, hot air vulcanization and air cooling. The high-temperature vulcanization is carried out in a high-temperature box with the length of 3 meters, and the temperature in the high-temperature box is 370-380 ℃; microwave vulcanization is carried out in a microwave box with the length of 9 meters, and the temperature in the microwave box is 230 ℃ to 240 ℃; hot air vulcanization is carried out in a hot air box, the hot air box is provided with three sections, each section is 9 meters long, and the temperature in the hot air box is 270-280 ℃; the extruded rubber compound sequentially passes through a high-temperature box, a microwave box and a hot air box at the speed of 8-10 m/min, and is continuously vulcanized, so that various accelerators and vulcanizing agents are fully reacted. And finally, the product is cooled by being emitted through an air cooling box with the length of 18 meters, so that the VOC odor of the product is lower.
And cutting the cooled product to obtain the sealing strip in a fixed length mode, and distributing the cut sealing strip in a hanging and baking mode. Specifically, the cut sealing strip is hung on a frame and baked in an oven, the baking temperature is 70-80 ℃, the baking time is 3.5-4.5h, and air suction and ventilation are performed once every 1h, so that the peculiar smell of the rubber strip is fully diffused, and the low-VOC rubber sealing strip is obtained.
Example 2
A preparation method of a low VOC rubber sealing strip, firstly, A milling is that 120 parts of EPDM9950C, 2 parts of stearic acid, 5 parts of nano active zinc oxide and 4 parts of polyethylene glycol are put into an internal mixer, and a top bolt is pressed to mix for 40 s; then adding 90 parts of carbon black HS25 and 70 parts of white oil 2070P, mixing to 160 ℃, fully combining and uniformly dispersing the filler, and then discharging the rubber; cooling to 130 ℃ in an open mill, adding 3 parts of ZDPPD-50, 3 parts of CLD-80, 2 parts of TBZTD-70 and 1.5 parts of MBT-80, mixing for 2-3min, and finishing feeding; and (4) discharging the slices, performing air cooling for 10 minutes on a glue cooling line, collecting the materials, standing for 8 hours, and transferring to a B smelting and vulcanizing procedure.
The B smelting and vulcanizing process specifically comprises the following steps: firstly adding the rubber material after the A refining into an internal mixer, mixing for 1 minute, then adding 1 part of S and 5 parts of 0BSH-50A, mixing for 2 minutes at 90 ℃, and discharging rubber; and (5) taking out the slices, cooling the slices for 10 minutes in a glue cooling line, collecting the slices, detecting the slices to be qualified, and warehousing the slices. Standing in a warehouse for 24 hours, and allowing the rubber to be diffused on a suspension vehicle, wherein the temperature is 20-25 ℃, the humidity is less than or equal to 70%, and ventilation is performed once every 1 hour.
And finally, extruding and vulcanizing: and extruding the rubber material obtained by the B refining through an extruder, and sequentially carrying out continuous vulcanization of high-temperature vulcanization, microwave vulcanization, hot air vulcanization and air cooling. The high-temperature vulcanization is carried out in a high-temperature box with the length of 3 meters, and the temperature in the high-temperature box is 370-380 ℃; microwave vulcanization is carried out in a microwave box with the length of 9 meters, and the temperature in the microwave box is 230 ℃ to 240 ℃; hot air vulcanization is carried out in a hot air box, the hot air box is provided with three sections, each section is 9 meters long, and the temperature in the hot air box is 270-280 ℃; the extruded rubber compound sequentially passes through a high-temperature box, a microwave box and a hot air box at the speed of 8-10 m/min, and is continuously vulcanized, so that various accelerators and vulcanizing agents are fully reacted. And finally, the product is cooled by being emitted through an air cooling box with the length of 18 meters, so that the VOC odor of the product is lower.
And cutting the cooled product to obtain the sealing strip in a fixed length mode, and distributing the cut sealing strip in a hanging and baking mode. Specifically, the cut sealing strip is hung on a frame and baked in an oven, the baking temperature is 70-80 ℃, the baking time is 3.5-4.5h, and air suction and ventilation are performed once every 1h, so that the peculiar smell of the rubber strip is fully diffused, and the low-VOC rubber sealing strip is obtained.
Example 3
A preparation method of a low VOC rubber sealing strip, firstly, A milling is that 110 parts of EPDM9950C, 2 parts of stearic acid, 7 parts of nano active zinc oxide and 2 parts of polyethylene glycol are put into an internal mixer, and a top bolt is pressed to mix for 30 s; then 80 parts of carbon black HS25 and 60 parts of white oil 2070P are added and mixed to the temperature of 155 ℃, so that the filler is fully combined and uniformly dispersed, and then the rubber is discharged; cooling to 130 ℃ in an open mill, adding 3 parts of ZDPPD-50, 2 parts of CLD-80, 2 parts of TBZTD-70 and 1 part of MBT-80, mixing for 2-3min, and finishing feeding; and (4) discharging the slices, performing air cooling for 10 minutes on a glue cooling line, collecting the materials, standing for 8 hours, and transferring to a B smelting and vulcanizing procedure.
The B smelting and vulcanizing process specifically comprises the following steps: firstly adding the rubber material after the A refining into an internal mixer, mixing for 1 minute, then adding 1 part of S and 3.5 parts of 0BSH-50A, mixing for 2 minutes at 85 ℃, and discharging rubber; and (5) taking out the slices, cooling the slices for 10 minutes in a glue cooling line, collecting the slices, detecting the slices to be qualified, and warehousing the slices. Standing in a warehouse for 24 hours, and allowing the rubber to be diffused on a suspension vehicle, wherein the temperature is 20-25 ℃, the humidity is less than or equal to 70%, and ventilation is performed once every 1 hour.
And finally, extruding and vulcanizing: and extruding the rubber material obtained by the B refining through an extruder, and sequentially carrying out continuous vulcanization of high-temperature vulcanization, microwave vulcanization, hot air vulcanization and air cooling. The high-temperature vulcanization is carried out in a high-temperature box with the length of 3 meters, and the temperature in the high-temperature box is 370-380 ℃; microwave vulcanization is carried out in a microwave box with the length of 9 meters, and the temperature in the microwave box is 230 ℃ to 240 ℃; hot air vulcanization is carried out in a hot air box, the hot air box is provided with three sections, each section is 9 meters long, and the temperature in the hot air box is 270-280 ℃; the extruded rubber compound sequentially passes through a high-temperature box, a microwave box and a hot air box at the speed of 8-10 m/min, and is continuously vulcanized, so that various accelerators and vulcanizing agents are fully reacted. And finally, the product is cooled by being emitted through an air cooling box with the length of 18 meters, so that the VOC odor of the product is lower.
And cutting the cooled product to obtain the sealing strip in a fixed length mode, and distributing the cut sealing strip in a hanging and baking mode. Specifically, the cut sealing strip is hung on a frame and baked in an oven, the baking temperature is 70-80 ℃, the baking time is 3.5-4.5h, and air suction and ventilation are performed once every 1h, so that the peculiar smell of the rubber strip is fully diffused, and the low-VOC rubber sealing strip is obtained.
Example 4
A method for preparing low VOC rubber sealing strip, firstly, A is to put 100 parts of EPDM9950C, 2 parts of stearic acid, 5 parts of nano active zinc oxide and 2 parts of polyethylene glycol into an internal mixer, press a top bolt and mix for 60 s; then 80 parts of carbon black HS25 and 60 parts of white oil 2070P are added and mixed to 160 ℃, so that the filler is fully combined and uniformly dispersed, and then the rubber is discharged; cooling to 135 ℃ in an open mill, adding 5 parts of ZDPPD-50, 3 parts of CLD-80, 2 parts of TBZTD-70 and 1 part of MBT-80, mixing for 2-3min, and finishing feeding; and (4) discharging the slices, performing air cooling for 10 minutes on a glue cooling line, collecting the materials, standing for 8 hours, and transferring to a B smelting and vulcanizing procedure.
The B smelting and vulcanizing process specifically comprises the following steps: firstly adding the rubber material after A milling into an internal mixer, mixing for 1 minute, then adding 0.8 part of S and 4 parts of 0BSH-50A, mixing for 2.5 minutes at 85 ℃, and discharging rubber; and (5) taking out the slices, cooling the slices for 10 minutes in a glue cooling line, collecting the slices, detecting the slices to be qualified, and warehousing the slices. Standing in a warehouse for 24 hours, and allowing the rubber to be diffused on a suspension vehicle, wherein the temperature is 20-25 ℃, the humidity is less than or equal to 70%, and ventilation is performed once every 1 hour.
And finally, extruding and vulcanizing: and extruding the rubber material obtained by the B refining through an extruder, and sequentially carrying out continuous vulcanization of high-temperature vulcanization, microwave vulcanization, hot air vulcanization and air cooling. The high-temperature vulcanization is carried out in a high-temperature box with the length of 3 meters, and the temperature in the high-temperature box is 370-380 ℃; microwave vulcanization is carried out in a microwave box with the length of 9 meters, and the temperature in the microwave box is 230 ℃ to 240 ℃; hot air vulcanization is carried out in a hot air box, the hot air box is provided with three sections, each section is 9 meters long, and the temperature in the hot air box is 270-280 ℃; the extruded rubber compound sequentially passes through a high-temperature box, a microwave box and a hot air box at the speed of 8-10 m/min, and is continuously vulcanized, so that various accelerators and vulcanizing agents are fully reacted. And finally, the product is cooled by being emitted through an air cooling box with the length of 18 meters, so that the VOC odor of the product is lower.
And cutting the cooled product to obtain the sealing strip in a fixed length mode, and distributing the cut sealing strip in a hanging and baking mode. Specifically, the cut sealing strip is hung on a frame and baked in an oven, the baking temperature is 70-80 ℃, the baking time is 3.5-4.5h, and air suction and ventilation are performed once every 1h, so that the peculiar smell of the rubber strip is fully diffused, and the low-VOC rubber sealing strip is obtained.
Example 5
A preparation method of a low VOC rubber sealing strip, firstly, A milling is that 120 parts of EPDM9950C, 2 parts of stearic acid, 7 parts of nano active zinc oxide and 2 parts of polyethylene glycol are put into an internal mixer, and a top bolt is pressed to mix for 30 s; then adding 90 parts of carbon black HS25 and 70 parts of white oil 2070P, mixing to 150 ℃, fully combining and uniformly dispersing the filler, and then discharging the rubber; cooling to 140 ℃ in an open mill, adding 3 parts of ZDPPD-50, 3 parts of CLD-80, 2 parts of TBZTD-70 and 1.5 parts of MBT-80, mixing for 2-3min, and finishing feeding; and (4) discharging the slices, performing air cooling for 10 minutes on a glue cooling line, collecting the materials, standing for 8 hours, and transferring to a B smelting and vulcanizing procedure.
The B smelting and vulcanizing process specifically comprises the following steps: firstly adding the rubber material after the A refining into an internal mixer, mixing for 1.5 minutes, then adding 1 part of S and 5 parts of 0BSH-50A, mixing for 2 minutes at 80 ℃, and discharging rubber; and (5) taking out the slices, cooling the slices for 10 minutes in a glue cooling line, collecting the slices, detecting the slices to be qualified, and warehousing the slices. Standing in a warehouse for 18 hours, and allowing the rubber to be diffused on a suspension trailer, wherein the temperature is 20-25 ℃, the humidity is 60%, and ventilation is performed once every 1 hour.
And finally, extruding and vulcanizing: and extruding the rubber material obtained by the B refining through an extruder, and sequentially carrying out continuous vulcanization of high-temperature vulcanization, microwave vulcanization, hot air vulcanization and air cooling. The high-temperature vulcanization is carried out in a high-temperature box with the length of 3 meters, and the temperature in the high-temperature box is 370-380 ℃; microwave vulcanization is carried out in a microwave box with the length of 9 meters, and the temperature in the microwave box is 230 ℃ to 240 ℃; hot air vulcanization is carried out in a hot air box, the hot air box is provided with three sections, each section is 9 meters long, and the temperature in the hot air box is 270-280 ℃; the extruded rubber compound sequentially passes through a high-temperature box, a microwave box and a hot air box at the speed of 8-10 m/min, and is continuously vulcanized, so that various accelerators and vulcanizing agents are fully reacted. Wherein, an ultraviolet lamp is arranged above the drying tunnel of the hot air box, and the deodorant decomposes VOC into CO2 and water to be emitted under the illumination of ultraviolet light and infrared light. And finally, the product is cooled by being emitted through an air cooling box with the length of 18 meters, so that the VOC odor of the product is lower.
And cutting the cooled product to obtain the sealing strip in a fixed length mode, and distributing the cut sealing strip in a hanging and baking mode. Specifically, the cut sealing strip is hung on a frame and baked in an oven, the baking temperature is 70-80 ℃, the baking time is 3.5-4.5h, and air suction and ventilation are performed once every 1h, so that the peculiar smell of the rubber strip is fully diffused, and the low-VOC rubber sealing strip is obtained.
Example 6
A method for preparing low VOC rubber sealing strip, firstly, A is to put 100 parts of EPDM9950C, 2 parts of stearic acid, 7 parts of nano active zinc oxide and 2 parts of polyethylene glycol into an internal mixer, press a top bolt and mix for 60 s; then adding 90 parts of carbon black HS25 and 70 parts of white oil 2070P, mixing to 160 ℃, fully combining and uniformly dispersing the filler, and then discharging the rubber; cooling to 130 ℃ in an open mill, adding 3 parts of ZDPPD-50, 3 parts of CLD-80, 2 parts of TBZTD-70 and 1.5 parts of MBT-80, mixing for 2-3min, and finishing feeding; and (4) discharging the slices, performing air cooling for 10 minutes on a glue cooling line, collecting the materials, standing for 8 hours, and transferring to a B smelting and vulcanizing procedure.
The B smelting and vulcanizing process specifically comprises the following steps: firstly, adding the rubber material after the A refining into an internal mixer, mixing for 1.5 minutes, then adding 0.8 part of S and 3.5 parts of 0BSH-50A, mixing for 3 minutes at 90 ℃, and discharging rubber; and (5) taking out the slices, cooling the slices for 10 minutes in a glue cooling line, collecting the slices, detecting the slices to be qualified, and warehousing the slices. Standing in a warehouse for 18 hours, and allowing the rubber to be diffused on a suspension trailer, wherein the temperature is 20-25 ℃, the humidity is 60%, and ventilation is performed once every 1 hour.
And finally, extruding and vulcanizing: and extruding the rubber material obtained by the B refining through an extruder, and sequentially carrying out continuous vulcanization of high-temperature vulcanization, microwave vulcanization, hot air vulcanization and air cooling. The high-temperature vulcanization is carried out in a high-temperature box with the length of 3 meters, and the temperature in the high-temperature box is 370-380 ℃; microwave vulcanization is carried out in a microwave box with the length of 9 meters, and the temperature in the microwave box is 230 ℃ to 240 ℃; hot air vulcanization is carried out in a hot air box, the hot air box is provided with three sections, each section is 9 meters long, and the temperature in the hot air box is 270-280 ℃; the extruded rubber compound sequentially passes through a high-temperature box, a microwave box and a hot air box at the speed of 8-10 m/min, and is continuously vulcanized, so that various accelerators and vulcanizing agents are fully reacted. Wherein, an ultraviolet lamp is arranged above the drying tunnel of the hot air box, and the deodorant decomposes VOC into CO2 and water to be emitted under the illumination of ultraviolet light and infrared light. And finally, the product is cooled by being emitted through an air cooling box with the length of 18 meters, so that the VOC odor of the product is lower.
And cutting the cooled product to obtain the sealing strip in a fixed length mode, and distributing the cut sealing strip in a hanging and baking mode. Specifically, the cut sealing strip is hung on a frame and baked in an oven, the baking temperature is 70-80 ℃, the baking time is 3.5-4.5h, and air suction and ventilation are performed once every 1h, so that the peculiar smell of the rubber strip is fully diffused, and the low-VOC rubber sealing strip is obtained.
The low-VOC rubber sealing strips prepared in the above examples 1 to 6 were tested by "TD-GC-MSD", "HPLC" and "bag-process VOC environmental chamber", and the test environmental conditions were as follows: the temperature (23 +/-2) DEG C, the humidity (50 +/-5)% RH, the volume of the sampling bag is 2000L, the testing temperature is 65 ℃, and the heating time is 2 h. The results of the measurements are shown in Table 1 below:
TABLE 1
In Table 1, N.D. indicates no detection, the limit (μ g/m)3) Refers to the limit values in the existing standard.
According to the detection results, the low-VOC rubber sealing strip prepared by the invention has a low-VOC rubber sealing strip and a good environment-friendly performance. In the preparation process of the invention, the VOC substances are fully emitted by controlling the feeding, mixing, vulcanizing modes and process parameters, so that the final product has a lower VOC value.
The physical properties of the low VOC rubber seals prepared in the above examples 1-6 were measured as follows:
TABLE 2
As can be seen from the test data in Table 2, the EPDM foamed rubber sealing strip prepared by the invention has excellent mechanical properties, the tensile strength of the EPDM foamed rubber sealing strip is 4.2-4.6MPa, and the elongation at break is 263-296%; the heat resistance is excellent, after the baking is carried out for 46h at the temperature of 70 ℃, the tensile strength can still be kept between 3.9 and 4.1Mpa, the elongation at break can still be kept between 261 and 275 percent, the mechanical properties are weak, and the stability is extremely strong; the waterproof performance is excellent, the tensile strength can still be kept above 3.8MPa after the waterproof sealing strip is heated in a water bath at the temperature of 80 ℃ for 4120h, and the waterproof sealing strip can meet the production and application requirements of automobile sealing strips.
The above-described embodiments are intended to illustrate rather than to limit the invention, and any changes and alterations made without inventive step within the spirit and scope of the claims are intended to fall within the scope of the invention.
Claims (10)
1. The low VOC rubber sealing strip is characterized by comprising the following components in parts by weight:
2. the low VOC rubber sealing strip of claim 1 wherein said accelerator comprises 3-5 parts ZBPD-50, 2-3 parts CLD-80 and 1-2 parts TBZTD-70.
3. The low VOC rubber sealing strip according to claim 1, wherein said softening agent is 2070P white oil; the foaming agent is 0 BSH-50A.
4. The low VOC rubber weatherstrip according to any one of claims 1 to 3 further comprising 2 to 3.5 parts of a deodorizing agent.
5. The low VOC rubber sealing strip according to claim 4, wherein said sealing strip is prepared from the following components in parts by weight: 100 parts of EPDM (ethylene-propylene-diene monomer), 70 parts of carbon black, 40 parts of superfine active calcium, 70 parts of 2070P white oil, 5 parts of nano active zinc oxide, 2 parts of stearic acid, 2 parts of polyethylene glycol, 0.8 part of S, 5 parts of ZDPPD-50, 3 parts of CLD-80, 1 part of TBZTD-70, 1-1.5 parts of MBT-80 and 3.5-5 parts of 0 BSH-50A.
6. The method for preparing the low VOC rubber sealing strip according to any one of claims 1-5, which comprises the following steps in sequence:
smelting A: adding EPDM, stearic acid, zinc oxide and polyethylene glycol into an internal mixer, and mixing for 30-60 s; then adding carbon black and a softening agent, mixing to the temperature of 150 ℃ and 160 ℃ for rubber removal; cooling to 130-140 ℃ in an open mill, adding an accelerant and mixing for 2-3 min; taking out the sheet, and cooling the sheet in a rubber cooling line to obtain rubber A;
b smelting: firstly, adding A for mixing and mixing in an internal mixer, then adding S and a foaming agent for mixing and discharging rubber; cooling the discharged sheets in a glue cooling line, and collecting and warehousing the discharged sheets;
extrusion and vulcanization: and extruding the rubber material after B smelting by an extruder, cooling and forming after sequentially carrying out high-temperature box vulcanization, microwave vulcanization and hot air vulcanization, and cutting at fixed length.
7. The preparation method of the low VOC rubber sealing strip according to claim 6, characterized in that the A refined sheet is cooled, received and placed for 8-10 hours to obtain A rubber compound, and then the A rubber compound is transferred to B refining and vulcanization; and B, after the smelting material is put into a warehouse, the residence time in the warehouse is 18-24h, the temperature in the warehouse is 20-25 ℃, the humidity is less than or equal to 70%, and ventilation is performed once every 1 h.
8. The method for preparing the sealing strip of rubber with low VOC as claimed in claim 6, wherein the mixing time after adding the S and the foaming agent is 2-3min and the temperature is 80-90 ℃ after adding the A mixing rubber in the internal mixer for mixing for 60-90S during the B mixing.
9. The method for preparing the sealing strip of low VOC rubber as claimed in claim 6, wherein the temperature in the high temperature box is 370-380 ℃, the temperature in the microwave box is 230-240 ℃, the temperature in the hot air box is 270-280 ℃, and an ultraviolet lamp is installed above the drying tunnel of the hot air box; the extruded rubber material passes through a high temperature box, a microwave box and a hot air box in sequence at the speed of 8-10 m/min.
10. The preparation method of the low-VOC rubber sealing strip according to any one of claims 6 to 9, characterized in that the cut sealing strip is diffused in a hanging baking manner, specifically, the cut sealing strip is hung on a frame and baked in an oven at a baking temperature of 70-80 ℃ for 3.5-4.5h, and air is ventilated once every 1h, so that the peculiar smell of the rubber strip is fully diffused.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130026717A1 (en) * | 2011-07-27 | 2013-01-31 | Hutchinson Sealing Systems | Weather Strip Seal for an Automotive Vehicle, and its Manufacturing Method |
| CN106883520A (en) * | 2016-11-11 | 2017-06-23 | 建新赵氏集团有限公司 | Sealing strip material of environmentally friendly, low smell and preparation method thereof |
| CN107163415A (en) * | 2017-07-03 | 2017-09-15 | 上海荣南科技有限公司 | A kind of closely knit glue microporous foam sizing material of sealing strip for automobile sunroof and preparation method |
| CN108017842A (en) * | 2016-11-04 | 2018-05-11 | 德尔福派克电气***有限公司 | A kind of automotive wire bundle low smell EPDM rubber and preparation method thereof |
| CN109880238A (en) * | 2019-01-28 | 2019-06-14 | 南京利德东方橡塑科技有限公司 | A kind of low smell suitable for microwave vulcanization, environmentally friendly EP rubbers composition and preparation method thereof |
| CN109880240A (en) * | 2019-02-23 | 2019-06-14 | 常熟市海虞橡胶有限公司 | A kind of fretting map low-density sealing strip rubber compound |
| CN110791025A (en) * | 2019-11-07 | 2020-02-14 | 中国第一汽车股份有限公司 | Healthy and environment-friendly sealing rubber strip and preparation method and application thereof |
| CN111234392A (en) * | 2020-03-18 | 2020-06-05 | 中国第一汽车股份有限公司 | Low-odor healthy and environment-friendly EPDM foamed rubber sealing strip and preparation method and application thereof |
-
2020
- 2020-08-31 CN CN202010896735.2A patent/CN112063058A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130026717A1 (en) * | 2011-07-27 | 2013-01-31 | Hutchinson Sealing Systems | Weather Strip Seal for an Automotive Vehicle, and its Manufacturing Method |
| CN108017842A (en) * | 2016-11-04 | 2018-05-11 | 德尔福派克电气***有限公司 | A kind of automotive wire bundle low smell EPDM rubber and preparation method thereof |
| CN106883520A (en) * | 2016-11-11 | 2017-06-23 | 建新赵氏集团有限公司 | Sealing strip material of environmentally friendly, low smell and preparation method thereof |
| CN107163415A (en) * | 2017-07-03 | 2017-09-15 | 上海荣南科技有限公司 | A kind of closely knit glue microporous foam sizing material of sealing strip for automobile sunroof and preparation method |
| CN109880238A (en) * | 2019-01-28 | 2019-06-14 | 南京利德东方橡塑科技有限公司 | A kind of low smell suitable for microwave vulcanization, environmentally friendly EP rubbers composition and preparation method thereof |
| CN109880240A (en) * | 2019-02-23 | 2019-06-14 | 常熟市海虞橡胶有限公司 | A kind of fretting map low-density sealing strip rubber compound |
| CN110791025A (en) * | 2019-11-07 | 2020-02-14 | 中国第一汽车股份有限公司 | Healthy and environment-friendly sealing rubber strip and preparation method and application thereof |
| CN111234392A (en) * | 2020-03-18 | 2020-06-05 | 中国第一汽车股份有限公司 | Low-odor healthy and environment-friendly EPDM foamed rubber sealing strip and preparation method and application thereof |
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