CN117186556A - Ethylene propylene diene monomer rubber sealing strip compatible with silicone adhesive and preparation method thereof - Google Patents
Ethylene propylene diene monomer rubber sealing strip compatible with silicone adhesive and preparation method thereof Download PDFInfo
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- CN117186556A CN117186556A CN202311019502.4A CN202311019502A CN117186556A CN 117186556 A CN117186556 A CN 117186556A CN 202311019502 A CN202311019502 A CN 202311019502A CN 117186556 A CN117186556 A CN 117186556A
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- diene monomer
- ethylene propylene
- propylene diene
- sealing strip
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- 229920002943 EPDM rubber Polymers 0.000 title claims abstract description 85
- 238000007789 sealing Methods 0.000 title claims abstract description 60
- 239000013464 silicone adhesive Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 26
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 26
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000001125 extrusion Methods 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 239000005662 Paraffin oil Substances 0.000 claims abstract description 18
- 239000006229 carbon black Substances 0.000 claims abstract description 17
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 17
- 239000011593 sulfur Substances 0.000 claims abstract description 17
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000292 calcium oxide Substances 0.000 claims abstract description 16
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 16
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 15
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 15
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 15
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000008117 stearic acid Substances 0.000 claims abstract description 15
- 239000011787 zinc oxide Substances 0.000 claims abstract description 15
- 229920001971 elastomer Polymers 0.000 claims description 53
- 238000002156 mixing Methods 0.000 claims description 26
- 238000007599 discharging Methods 0.000 claims description 24
- 150000001875 compounds Chemical class 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 11
- 229940126062 Compound A Drugs 0.000 claims description 9
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 claims description 9
- BOXSVZNGTQTENJ-UHFFFAOYSA-L zinc dibutyldithiocarbamate Chemical compound [Zn+2].CCCCN(C([S-])=S)CCCC.CCCCN(C([S-])=S)CCCC BOXSVZNGTQTENJ-UHFFFAOYSA-L 0.000 claims description 9
- RKQOSDAEEGPRER-UHFFFAOYSA-L zinc diethyldithiocarbamate Chemical compound [Zn+2].CCN(CC)C([S-])=S.CCN(CC)C([S-])=S RKQOSDAEEGPRER-UHFFFAOYSA-L 0.000 claims description 9
- DUBNHZYBDBBJHD-UHFFFAOYSA-L ziram Chemical compound [Zn+2].CN(C)C([S-])=S.CN(C)C([S-])=S DUBNHZYBDBBJHD-UHFFFAOYSA-L 0.000 claims description 9
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 5
- 239000005977 Ethylene Substances 0.000 claims description 5
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 239000010690 paraffinic oil Substances 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 238000011049 filling Methods 0.000 abstract description 3
- 229920000642 polymer Polymers 0.000 abstract description 3
- 230000003014 reinforcing effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004073 vulcanization Methods 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 6
- 238000011056 performance test Methods 0.000 description 5
- HLBZWYXLQJQBKU-UHFFFAOYSA-N 4-(morpholin-4-yldisulfanyl)morpholine Chemical compound C1COCCN1SSN1CCOCC1 HLBZWYXLQJQBKU-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000010059 sulfur vulcanization Methods 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 235000012438 extruded product Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Landscapes
- Sealing Material Composition (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The application belongs to the technical field of sealing strips, and discloses an ethylene propylene diene monomer rubber sealing strip compatible with silicone adhesive and a preparation method thereof. The preparation raw materials of the ethylene propylene diene monomer rubber sealing strip comprise: ethylene propylene diene monomer, fast extrusion carbon black, calcined kaolin, paraffin oil, active zinc oxide, stearic acid, a flow aid, sulfur, an accelerator and calcium oxide. According to the ethylene propylene diene monomer sealing strip, the calcined kaolin is added into the preparation raw materials, and can be compatible with ethylene propylene diene monomer to form a polymer, so that the pollution of ethylene propylene diene monomer to silicone adhesive is obviously reduced, the calcined kaolin also has the reinforcing and filling effects, and the prepared ethylene propylene diene monomer sealing strip has good hardness, tensile strength and tear strength on the basis of being matched with other preparation raw materials, so that the compatibility with the silicone adhesive is obviously improved, and the sealing system requirement of a building curtain wall can be met.
Description
Technical Field
The application belongs to the technical field of sealing strips, and particularly relates to an ethylene propylene diene monomer rubber sealing strip compatible with silicone adhesive and a preparation method thereof.
Background
The ethylene propylene diene monomer rubber sealing strip compatible with silicone adhesive is mainly used for a sealing system of a building curtain wall, a base material of the sealing strip is ethylene propylene diene monomer rubber (EPDM), and a processing process of the sealing strip is a microwave vulcanization extrusion process. EPDM is a nonpolar micro-unsaturated rubber, has good ozone resistance, heat aging resistance, water resistance, corrosion resistance, and is also a high-elasticity rubber with excellent electrical insulation properties. The ethylene propylene diene monomer rubber sealing strip is applied to a sealing system of a building curtain wall, and has good compatibility with silicone adhesive besides good sealing performance, physical and mechanical properties and ageing resistance, so that the adhesive strength of the silicone adhesive, curtain wall adhesive tape and glass is improved. However, most of the current ethylene propylene diene monomer rubber sealing strips have poor compatibility with silicone adhesive, and white or semitransparent silicone adhesive is easy to pollute and turns yellow; the silicone adhesive is extremely unattractive after yellowing, and even affects the visual harmony of the whole building.
Therefore, there is a need to develop an ethylene propylene diene monomer rubber sealing strip with good compatibility with silicone adhesive.
Disclosure of Invention
The present application aims to solve at least one of the technical problems in the prior art described above. Therefore, the ethylene propylene diene monomer rubber sealing strip compatible with the silicone adhesive and the preparation method thereof are provided, and the ethylene propylene diene monomer rubber sealing strip not only has good hardness, tensile strength and tearing strength, but also is well compatible with the silicone adhesive, and does not pollute the silicone adhesive, so that the sealing system requirement of a building curtain wall can be met.
The first aspect of the application provides an ethylene propylene diene monomer rubber sealing strip compatible with silicone adhesive, which is prepared from the following raw materials: ethylene propylene diene monomer, fast extrusion carbon black, calcined kaolin, paraffin oil, active zinc oxide, stearic acid, a flow aid, sulfur, an accelerator and calcium oxide.
In the preparation raw materials, the quick extrusion carbon black can endow the ethylene propylene diene monomer with poor self-reinforcement property with certain reinforcement property, so that the tensile strength of the ethylene propylene diene monomer is increased, and the extrusion surface of the rubber compound is smooth; the calcined kaolin and the ethylene propylene diene monomer are compatible to be a polymer, so that the pollution of the ethylene propylene diene monomer to silicone adhesive is obviously reduced, and the calcined kaolin has the functions of reinforcing and filling, so that the cost is reduced; the paraffin oil is compatible with the ethylene propylene diene monomer, is not easy to separate out and volatilize, and is not easy to generate chemical reaction with the silicone adhesive; the flow aid improves the flowability of the rubber compound during extrusion and the brightness of the surface of the product; the insoluble sulfur plays a crosslinking chemical reaction role on the ethylene propylene diene monomer rubber, and enhances the physical and mechanical properties of the rubber compound. Under the combined action of the preparation raw materials, the ethylene propylene diene monomer rubber sealing strip obviously improves the compatibility with silicone adhesive and has good hardness, tensile strength, tearing strength and the like.
In some embodiments of the application, the ethylene propylene diene monomer rubber sealing strip is prepared from the following raw materials in parts by weight: 100 parts of ethylene propylene diene monomer rubber, 95-110 parts of fast extrusion carbon black, 70-90 parts of calcined kaolin, 60-80 parts of paraffin oil, 5-6 parts of active zinc oxide, 1-2 parts of stearic acid, 2-3 parts of flow aid, 0.2-0.4 part of sulfur, 0.5-7 parts of accelerator and 10-15 parts of calcium oxide. The application forms a high-acceleration low-sulfur vulcanization system by controlling the dosage of each preparation raw material, and the higher the weight part of calcined kaolin is, the slower the vulcanization speed is, so the high-acceleration low-sulfur vulcanization system is adopted to ensure quick vulcanization, and the application is suitable for a microwave vulcanization extrusion process.
In some embodiments of the application, the ethylene propylene diene monomer has an ENB content of 4.5 to 6.5wt%, an ethylene content of 50 to 60wt% and a Mooney viscosity of 75 to 90. Further, the ethylene propylene diene monomer rubber has an ENB content of 5wt%, an ethylene content of 56wt% and a Mooney viscosity ML (1+4) at 125 ℃ of 78. The application adopts the ethylene propylene diene monomer with middle ENB content, high molecular weight and middle ethylene content, the ENB content ensures that the rubber compound has higher vulcanization speed, the high molecular weight ensures that the rubber compound is not easy to collapse in the process of microwave vulcanization extrusion, and the middle ethylene ensures that the rubber compound has good tensile strength performance.
In some embodiments of the application, the paraffinic oil has an aromatic content of < 0.2%. The application adopts high flash point and high purity (low aromatic hydrocarbon) paraffin oil, is not easy to separate out and volatilize, and is not easy to generate chemical reaction with silicone adhesive.
In some embodiments of the application, the flow aid comprises at least one of RL-20, E-25, WB 212.
In some embodiments of the application, the accelerator comprises at least one of zinc dibutyl dithiocarbamate, zinc diethyl dithiocarbamate, zinc dimethyl dithiocarbamate, 4' -dithiodimorpholine.
The second aspect of the application provides a preparation method of an ethylene propylene diene monomer rubber sealing strip compatible with silicone adhesive, comprising the following steps:
and (3) carrying out two-stage mixing and extrusion on the preparation raw materials to obtain the ethylene propylene diene monomer rubber sealing strip.
In some embodiments of the application, the specific process of the two-stage mixing comprises:
s1, carrying out first-stage mixing on ethylene propylene diene monomer, active zinc oxide, stearic acid, a flow aid, quick extrusion carbon black, calcined kaolin and paraffin oil, and discharging tablets to obtain a rubber compound A;
s2, carrying out second-stage mixing on the mixed rubber A, the vulcanizing agent, the accelerator and the calcium oxide, and discharging tablets to obtain mixed rubber B;
and S3, extruding the rubber compound B to obtain the ethylene propylene diene monomer rubber sealing strip.
In some embodiments of the application, the temperature of the first stage mixing is from 100 to 160 ℃. According to the application, through the first section of mixing, when the high temperature mixing is about 150 ℃, raw rubber (ethylene propylene diene monomer) can be formed into semi-fluid, and better dispersion is formed by the semi-fluid and filler (fast extrusion carbon black, calcined kaolin and paraffin oil) with larger proportion, so that better extrusion vulcanization stability is ensured.
In some embodiments of the application, the temperature of the second stage mixing is 70-90 ℃. According to the application, through the second-stage mixing, when the mixing temperature is about 80 ℃, the mixed rubber A, sulfur with smaller proportion, accelerator and calcium oxide can form the mixed rubber B which is not subjected to premature vulcanization, and the fluidity of the mixed rubber B is deteriorated due to the premature vulcanization, so that the surface of an extruded product is not smooth.
In some embodiments of the application, the extrusion temperature is 240-260 ℃.
In some embodiments of the present application, the specific process of step S1 is: ethylene propylene diene monomer, active zinc oxide, stearic acid and a flow aid are put into an internal mixer to be pressurized and plasticated for 30-50s; then adding the fast extrusion carbon black, calcined kaolin and paraffin oil to be pressurized to the exhaust temperature (110+/-10 ℃), and opening a top bolt for exhaust once; and continuously pressurizing and banburying to the rubber discharging temperature (the temperature is 150+/-10 ℃), discharging rubber to an open mill, carrying out thin pass on the rubber for three times, and discharging sheets to obtain the rubber compound A.
In some embodiments of the present application, the specific process of step S2 is: and (3) putting the mixed rubber A, sulfur, an accelerator and calcium oxide into an internal mixer for pressurized mixing to 80+/-10 ℃, then discharging rubber into an open mill for rubber turning for 110-130s, and discharging tablets to obtain mixed rubber B.
Compared with the prior art, the application has the following beneficial effects:
according to the ethylene propylene diene monomer sealing strip, the calcined kaolin is added into the preparation raw materials, and can be compatible with ethylene propylene diene monomer to form a polymer, so that the pollution of ethylene propylene diene monomer to silicone adhesive is obviously reduced, the calcined kaolin also has the reinforcing and filling effects, and the prepared ethylene propylene diene monomer sealing strip has good hardness, tensile strength and tear strength on the basis of being matched with other preparation raw materials, so that the compatibility with the silicone adhesive is obviously improved, and the sealing system requirement of a building curtain wall can be met.
Detailed Description
In order to make the technical solutions of the present application more apparent to those skilled in the art, the following examples will be presented. It should be noted that the following examples do not limit the scope of the application.
The starting materials, reagents or apparatus used in the following examples are all available from conventional commercial sources or may be obtained by methods known in the art unless otherwise specified.
Example 1
The embodiment provides an ethylene propylene diene monomer rubber sealing strip compatible with silicone adhesive, which is prepared from the following raw materials in parts by weight: 100 parts of ethylene propylene diene monomer rubber (model 3110M), 105 parts of quick extrusion carbon black (model N550), 75 parts of calcined kaolin (model GP 09), 65 parts of paraffin oil (model LD-300), 6 parts of active zinc oxide (model T-60), 1 part of stearic acid (model 1801), 2 parts of flow aid (model RL-20), 0.4 part of sulfur (model IS-60), 1.8 parts of zinc dibutyl dithiocarbamate, 0.7 part of zinc diethyl dithiocarbamate, 0.6 part of zinc dimethyl dithiocarbamate, 2 parts of 4,4' -dithiodimorpholine and 12 parts of calcium oxide.
The preparation method of the ethylene propylene diene monomer rubber sealing strip comprises the following steps:
s1, mixing in a first section: ethylene propylene diene monomer, active zinc oxide, stearic acid and a flow aid are put into an internal mixer to be pressurized and plasticated for 40s; then adding the fast extrusion carbon black, calcined kaolin and paraffin oil to be pressurized to the exhaust temperature (110 ℃), and opening a top plug for exhaust once; and continuously pressurizing and banburying to the rubber discharging temperature (the temperature is 150 ℃), discharging rubber to an open mill, carrying out thin pass for three times, and discharging sheets to obtain the rubber compound A.
S2, mixing in a second stage: and (3) putting the rubber compound A, sulfur, zinc dibutyl dithiocarbamate, zinc diethyl dithiocarbamate, zinc dimethyl dithiocarbamate, 4' -dithiodimorpholine and calcium oxide into an internal mixer for pressurized mixing to 80 ℃, and then discharging rubber into an open mill for rubber turning for 120s, and discharging sheets to obtain rubber compound B.
And S3, extruding the rubber compound B in an extruder with the drying tunnel temperature of 250 ℃ to obtain the ethylene propylene diene monomer rubber sealing strip.
The performance test results of the rubber compound B and the ethylene propylene diene monomer sealing strip prepared in the embodiment are shown in tables 1 and 2 respectively.
Table 1 results of Performance test of Compound B
Table 2 results of performance test of ethylene propylene diene monomer sealing strips
Example 2
The embodiment provides an ethylene propylene diene monomer rubber sealing strip compatible with silicone adhesive, which is prepared from the following raw materials in parts by weight: 100 parts of ethylene propylene diene monomer rubber (model 3110M), 95 parts of quick extrusion carbon black (model N550), 70 parts of calcined kaolin (model GP 09), 60 parts of paraffin oil (model LD-300), 5 parts of active zinc oxide (model T-60), 1 part of stearic acid (model 1801), 2 parts of flow aid (model RL-20), 0.2 part of sulfur (model IS-60), 1.5 parts of zinc dibutyl dithiocarbamate, 0.5 part of zinc diethyl dithiocarbamate, 0.5 part of zinc dimethyl dithiocarbamate, 1 part of 4,4' -dithiodimorpholine and 10 parts of calcium oxide.
The preparation method of the ethylene propylene diene monomer rubber sealing strip comprises the following steps:
s1, mixing in a first section: ethylene propylene diene monomer, active zinc oxide, stearic acid and a flow aid are put into an internal mixer to be pressurized and plasticated for 30s; then adding the fast extrusion carbon black, calcined kaolin and paraffin oil to be pressurized to the exhaust temperature (100 ℃), and opening a top plug for exhaust once; and continuously pressurizing and banburying to the rubber discharging temperature (the temperature is 140 ℃), discharging rubber to an open mill, carrying out thin pass for three times, and discharging sheets to obtain the rubber compound A.
S2, mixing in a second stage: and (3) putting the rubber compound A, sulfur, zinc dibutyl dithiocarbamate, zinc diethyl dithiocarbamate, zinc dimethyl dithiocarbamate, 4' -dithiodimorpholine and calcium oxide into an internal mixer for pressurized mixing to 70 ℃, and then discharging rubber to an open mill for rubber turning for 110s, and discharging sheets to obtain rubber compound B.
And S3, extruding the rubber compound B in an extruder with a drying channel temperature of 240 ℃ to obtain the ethylene propylene diene monomer rubber sealing strip.
Example 3
The embodiment provides an ethylene propylene diene monomer rubber sealing strip compatible with silicone adhesive, which is prepared from the following raw materials in parts by weight: 100 parts of ethylene propylene diene monomer rubber (model 3110M), 110 parts of quick extrusion carbon black (model N550), 90 parts of calcined kaolin (model GP 09), 80 parts of paraffin oil (model LD-300), 6 parts of active zinc oxide (model T-60), 2 parts of stearic acid (model 1801), 3 parts of flow aid (model RL-20), 0.4 part of sulfur (model IS-60), 1.8 parts of zinc dibutyl dithiocarbamate, 0.8 part of zinc diethyl dithiocarbamate, 0.8 part of zinc dimethyl dithiocarbamate, 3 parts of 4,4' -dithiodimorpholine and 15 parts of calcium oxide.
The preparation method of the ethylene propylene diene monomer rubber sealing strip comprises the following steps:
s1, mixing in a first section: ethylene propylene diene monomer, active zinc oxide, stearic acid and a flow aid are put into an internal mixer to be pressurized and plasticated for 50s; then putting the quick-extruded carbon black, calcined kaolin and paraffin oil into the furnace to be pressurized to the exhaust temperature (the temperature is 120 ℃), and opening a top bolt for exhaust once; and continuously pressurizing and banburying to the rubber discharging temperature (the temperature is 160 ℃), discharging rubber to an open mill, carrying out thin pass for three times, and discharging sheets to obtain the rubber compound A.
S2, mixing in a second stage: and (3) putting the rubber compound A, sulfur, zinc dibutyl dithiocarbamate, zinc diethyl dithiocarbamate, zinc dimethyl dithiocarbamate, 4' -dithiodimorpholine and calcium oxide into an internal mixer for pressurized mixing to 90 ℃, and then discharging rubber to an open mill for rubber turning for 130s, and discharging sheets to obtain rubber compound B.
And S3, extruding the rubber compound B in an extruder with a drying channel temperature of 260 ℃ to obtain the ethylene propylene diene monomer rubber sealing strip.
The properties of the ethylene propylene diene monomer rubber sealing strips prepared in the examples 2 and 3 are the same as those of the ethylene propylene diene monomer rubber sealing strip prepared in the example 1, and the properties of the ethylene propylene diene monomer rubber sealing strips are not obviously different.
Comparative example 1
The ethylene propylene diene monomer rubber sealing strip provided in comparative example 1 is different from example 1 in that the calcined kaolin is replaced by kaolin, and other preparation raw materials, amounts and preparation methods are the same as those in example 1.
The performance test results of the ethylene propylene diene monomer rubber sealing strip prepared in comparative example 1 are shown in Table 3.
TABLE 3 Table 3
From the above results, it can be seen that the ethylene propylene diene monomer rubber sealing strip produced by using the general kaolin as the filler is obviously incompatible with the silicone adhesive, and the silicone adhesive is seriously discolored after being contacted with the silicone adhesive.
Comparative example 2 (differs from example 1 in that the amounts of the individual raw materials are adjusted to form a high-sulfur, low-acceleration vulcanization system)
The ethylene propylene diene monomer rubber sealing strip provided by the comparative example comprises the following raw materials in parts by weight: 100 parts of ethylene propylene diene monomer rubber (model 3110M), 105 parts of quick extrusion carbon black (model N550), 75 parts of calcined kaolin (model GP 09), 65 parts of paraffin oil (model LD-300), 6 parts of active zinc oxide (model T-60), 1 part of stearic acid (model 1801), 2 parts of flow aid (model RL-20), 2 parts of sulfur (model IS-60), 1.6 parts of zinc dibutyl dithiocarbamate, 0.7 part of zinc diethyl dithiocarbamate, 0.6 part of zinc dimethyl dithiocarbamate, 0.5 part of 4,4' -dithiodimorpholine and 12 parts of calcium oxide.
The preparation method of the ethylene propylene diene monomer rubber sealing strip is the same as that of the embodiment 1.
The performance test results of the ethylene propylene diene monomer rubber sealing strip prepared in comparative example 2 are shown in Table 4.
TABLE 4 Table 4
From the above results, it can be seen that the ethylene propylene diene monomer rubber sealing strip produced by the formula of the high-sulfur low-promotion vulcanization system is obviously incompatible with the silicone adhesive, and the silicone adhesive is obviously discolored after being contacted with the silicone adhesive.
While the preferred embodiment of the present application has been described in detail, the application is not limited to the embodiments, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the application, and these modifications and substitutions are intended to be included in the scope of the present application as defined in the appended claims.
Claims (10)
1. The ethylene propylene diene monomer rubber sealing strip compatible with silicone adhesive is characterized by comprising the following preparation raw materials: ethylene propylene diene monomer, fast extrusion carbon black, calcined kaolin, paraffin oil, active zinc oxide, stearic acid, a flow aid, sulfur, an accelerator and calcium oxide.
2. The ethylene propylene diene monomer rubber sealing strip compatible with silicone adhesive according to claim 1, wherein the ethylene propylene diene monomer rubber sealing strip is prepared from the following raw materials in parts by weight: 100 parts of ethylene propylene diene monomer rubber, 95-110 parts of fast extrusion carbon black, 70-90 parts of calcined kaolin, 60-80 parts of paraffin oil, 5-6 parts of active zinc oxide, 1-2 parts of stearic acid, 2-3 parts of flow aid, 0.2-0.4 part of sulfur, 0.5-7 parts of accelerator and 10-15 parts of calcium oxide.
3. The silicone adhesive compatible ethylene propylene diene monomer sealing strip of claim 1, wherein the ethylene propylene diene monomer has an ENB content of 4.5-6.5wt%, an ethylene content of 50-60wt% and a mooney viscosity of 75-90.
4. The silicone gum compatible ethylene propylene diene monomer sealing strip of claim 1, wherein the paraffinic oil has an aromatic hydrocarbon content of < 0.2%.
5. The silicone adhesive compatible ethylene propylene diene monomer seal of claim 1 wherein the flow aid comprises at least one of RL-20, E-25, WB 212.
6. The silicone adhesive compatible ethylene propylene diene monomer seal of claim 1, wherein the accelerator comprises at least one of zinc dibutyl dithiocarbamate, zinc diethyl dithiocarbamate, zinc dimethyl dithiocarbamate, 4' -dithiodimorpholine.
7. The preparation method of the ethylene propylene diene monomer rubber sealing strip compatible with the silicone adhesive is characterized by comprising the following steps of:
carrying out two-stage mixing and extrusion on the preparation raw materials according to any one of claims 1 to 6 to obtain the ethylene propylene diene monomer rubber sealing strip.
8. The preparation method according to claim 7, wherein the specific process of the two-stage mixing comprises:
s1, carrying out first-stage mixing on ethylene propylene diene monomer, active zinc oxide, stearic acid, a flow aid, quick extrusion carbon black, calcined kaolin and paraffin oil, and discharging tablets to obtain a rubber compound A;
s2, carrying out second-stage mixing on the mixed rubber A, the vulcanizing agent, the accelerator and the calcium oxide, and discharging tablets to obtain mixed rubber B;
and S3, extruding the rubber compound B to obtain the ethylene propylene diene monomer rubber sealing strip.
9. The method of claim 8, wherein the first stage mixing is at a temperature of 100-160 ℃.
10. The method of claim 8, wherein the second stage mixing is at a temperature of 70-90 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311019502.4A CN117186556A (en) | 2023-08-14 | 2023-08-14 | Ethylene propylene diene monomer rubber sealing strip compatible with silicone adhesive and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311019502.4A CN117186556A (en) | 2023-08-14 | 2023-08-14 | Ethylene propylene diene monomer rubber sealing strip compatible with silicone adhesive and preparation method thereof |
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| CN117186556A true CN117186556A (en) | 2023-12-08 |
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|---|---|---|---|
| CN202311019502.4A Pending CN117186556A (en) | 2023-08-14 | 2023-08-14 | Ethylene propylene diene monomer rubber sealing strip compatible with silicone adhesive and preparation method thereof |
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| CN (1) | CN117186556A (en) |
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