CN112876778A - Water gate rubber sealing element with high weather resistance and preparation method thereof - Google Patents
Water gate rubber sealing element with high weather resistance and preparation method thereof Download PDFInfo
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 30
- 238000007789 sealing Methods 0.000 title claims abstract description 24
- 238000001363 water suppression through gradient tailored excitation Methods 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 58
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000011246 composite particle Substances 0.000 claims abstract description 30
- 238000002156 mixing Methods 0.000 claims abstract description 30
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 29
- 229920005557 bromobutyl Polymers 0.000 claims abstract description 29
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 29
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 29
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 29
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 29
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 29
- 239000002048 multi walled nanotube Substances 0.000 claims abstract description 28
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 27
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 27
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000006229 carbon black Substances 0.000 claims abstract description 27
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 27
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 27
- 239000010439 graphite Substances 0.000 claims abstract description 27
- GEMHFKXPOCTAIP-UHFFFAOYSA-N n,n-dimethyl-n'-phenylcarbamimidoyl chloride Chemical compound CN(C)C(Cl)=NC1=CC=CC=C1 GEMHFKXPOCTAIP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 27
- 239000005011 phenolic resin Substances 0.000 claims abstract description 27
- 239000011297 pine tar Substances 0.000 claims abstract description 27
- 229940068124 pine tar Drugs 0.000 claims abstract description 27
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 27
- 239000011593 sulfur Substances 0.000 claims abstract description 27
- 239000002383 tung oil Substances 0.000 claims abstract description 27
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 239000000084 colloidal system Substances 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 15
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 15
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 15
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 15
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 10
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 9
- 238000007493 shaping process Methods 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 7
- 238000013329 compounding Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 239000010936 titanium Substances 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 5
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 230000032683 aging Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 2
- 229940105289 carbon black Drugs 0.000 abstract 1
- 235000019241 carbon black Nutrition 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 5
- 239000002131 composite material Substances 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a water gate rubber sealing element with high weather resistance and a preparation method thereof, and belongs to the technical field of rubber materials. The raw materials are as follows according to the mass portion: 60-80 parts of ethylene propylene diene monomer, 20-40 parts of brominated butyl rubber and 40-50 parts of carbonBlack, 2-4 parts of layered graphite and 0.5-0.8 part of nano SiO2/TiO2The composite particles, 0.2-0.3 part of nano aluminum oxide, 0.2-0.3 part of multi-walled carbon nano tube, 0.6-0.8 part of tung oil, 1.5-2.5 parts of phenolic resin, 1-1.5 parts of cobalt naphthenate, 2-3 parts of pine tar, 0.5-0.8 part of sulfur and 1-1.3 parts of vulcanizing agent DCP. The invention is prepared by mixing multi-wall carbon nano-tube and nano SiO2/TiO2The composite particles are combined with other components to play a role in synergy, and finally, the prepared product has high weather resistance and good ageing resistance.
Description
Technical Field
The invention belongs to the technical field of rubber materials, and particularly relates to a water gate rubber sealing element with high weather resistance and a preparation method thereof.
Background
The sluice rubber sealing element is a key accessory for water stopping of various steel gates in hydraulic and hydroelectric engineering, and is also called as a gate water seal or a rubber water seal. The water stop effect of the sluice is directly influenced by factors such as the self quality, the field installation process and the like, and the safe operation of the hydraulic building is further influenced.
Along with the increase of the service life of the gate, the phenomena of door body corrosion, rubber water seal abrasion and water leakage of most gates in different degrees occur, the normal operation of the gate is influenced, and precious water resources are wasted. Through research, the water leakage of the gate water stopping device is caused by various reasons, and most of the reasons are that the service life of the gate rubber sealing element is short due to poor weather resistance (weather resistance refers to the capability of resisting severe cold, hot, dry and damp for a long time).
Disclosure of Invention
The technical problem to be solved is as follows: aiming at the technical problems, the invention provides the sluice rubber sealing element with strong weather resistance and the preparation method thereof, and the prepared product has the advantages of high weather resistance, good aging resistance and the like.
The technical scheme is as follows: a water gate rubber sealing element with strong weather resistance comprises the following raw materials in parts by weight: 60-80 parts of ethylene propylene diene monomer, 20-40 parts of brominated butyl rubber, 40-50 parts of carbon black, 2-4 parts of layered graphite and 0.5-0.8 part of nano SiO2/TiO2The composite particles, 0.2-0.3 part of nano aluminum oxide, 0.2-0.3 part of multi-walled carbon nano tube, 0.6-0.8 part of tung oil, 1.5-2.5 parts of phenolic resin, 1-1.5 parts of cobalt naphthenate, 2-3 parts of pine tar, 0.5-0.8 part of sulfur and 1-1.3 parts of vulcanizing agent DCP.
Preferably, the raw materials are as follows according to the mass portion: 70 parts of ethylene propylene diene monomer, 30 parts of brominated butyl rubber, 45 parts of carbon black, 3 parts of layered graphite and 0.6 part of nano SiO2/TiO2Composite particles, 0.2 part of nano-alumina, 0.3 part of multi-walled carbon nano-tube, 0.8 part of tung oil, 1 part of phenolic resin, 1 part of cobalt naphthenate, 1.5 parts of pine tar, 0.6 part of sulfur and 1.2 parts of vulcanizing agent DCP.
Preferably, the raw materials are as follows according to the mass portion: 60 parts of ethylene propylene diene monomer, 20 parts of brominated butyl rubber, 40 parts of carbon black, 2 parts of layered graphite and 0.5 part of nano SiO2/TiO2Composite particles, 0.2 part of nano aluminum oxide, 0.2 part of multi-walled carbon nano tube, 0.6 part of tung oil, 1.5 parts of phenolic resin, 1 part of cobalt naphthenate, 2 parts of pine tar, 0.5 part of sulfur and 1 part of vulcanizing agent DCP.
Preferably, the raw materials are as follows according to the mass portion: 80 parts of ethylene propylene diene monomer, 40 parts of brominated butyl rubber, 50 parts of carbon black, 4 parts of layered graphite and 0.8 part of nano SiO2/TiO2Composite particles, 0.3 part of nano-alumina, 0.3 part of multi-walled carbon nano-tube, 0.8 part of tung oil, 2.5 parts of phenolic resin, 1.5 parts of cobalt naphthenate, 3 parts of pine tar, 0.8 part of sulfur and 1.3 parts of vulcanizing agent DCP.
Preferably, the nano SiO2/TiO2The preparation method of the composite particles comprises the following steps: mixing nanometer TiO2Dissolving the mixture in 0.025 wt.% of absolute ethanol solution of polyvinylpyrrolidone, uniformly dispersing, adding tetraethyl orthosilicate and ammonia water at the temperature of 35 ℃, reacting for 4-6 h, centrifuging, washing with water, and drying to obtain nano SiO2/TiO2Composite particles of nano TiO with a molar ratio of silicon to titanium of 2:12Ratio to 0.025 wt.% absolute ethanol solution of polyvinylpyrrolidone was 1 g: 150mL, the volume ratio of ammonia water to 0.025 wt.% absolute ethanol solution of polyvinylpyrrolidone is 1: 10.
Based on the preparation method of the water gate rubber sealing element with strong weather resistance, the steps are as follows:
weighing ethylene propylene diene monomer, brominated butyl rubber, carbon black, layered graphite and nano SiO according to the mass part ratio2/TiO2Composite particles, nano-alumina, multi-walled carbon nanotubes, tung oil, phenolic resin, cobalt naphthenate, pine tar, sulfur and a vulcanizing agent DCP;
placing the ethylene propylene diene monomer and the brominated butyl rubber into an internal mixer at the temperature of 120-125 ℃ for mixing for 2-3 min;
step three, then adding nano SiO2/TiO2The composite fine particles are formed by mixing a fine powder,continuously mixing for 3-4 min;
finally, adding carbon black, layered graphite, nano-alumina, multi-walled carbon nanotubes, tung oil, phenolic resin, cobalt naphthenate, pine tar, sulfur and a vulcanizing agent DCP, and mixing for 2-3 min;
and step five, taking the mixed colloid, thinly passing the colloid for 4-6 times, then sending the colloid into an extruder for extrusion forming, standing the colloid for one day, and then vulcanizing and shaping the colloid on a vulcanizing machine at the temperature of 145-150 ℃ for 20-25 min.
Preferably, the ethylene propylene diene monomer and the brominated butyl rubber are placed in an internal mixer at 125 ℃ and mixed for 2min in the second step.
Preferably, the colloid obtained in the fifth step is subjected to thin-pass for 6 times after mixing, then is sent into an extruder for extrusion forming, and is vulcanized and shaped on a vulcanizing machine at the temperature of 145 ℃ for 25min after standing for one day.
Has the advantages that: the invention is prepared by mixing ethylene propylene diene monomer, brominated butyl rubber, carbon black, layered graphite and nano SiO2/TiO2Processing composite particles, nano aluminum oxide, multi-walled carbon nanotubes, tung oil, phenolic resin, cobalt naphthenate, pine tar, sulfur and vulcanizing agent DCP to obtain the water gate rubber sealing member with strong weather resistance, wherein the multi-walled carbon nanotubes and the nano SiO are processed2/TiO2The composite particles are combined with other components to play a role in synergy, and finally, the prepared product has high weather resistance and good ageing resistance.
Detailed Description
The invention is further described with reference to specific examples.
Example 1
A water gate rubber sealing element with strong weather resistance comprises the following raw materials in parts by weight: 70 parts of ethylene propylene diene monomer, 30 parts of brominated butyl rubber, 45 parts of carbon black, 3 parts of layered graphite and 0.6 part of nano SiO2/TiO2Composite particles, 0.2 part of nano-alumina, 0.3 part of multi-walled carbon nano-tube, 0.8 part of tung oil, 1 part of phenolic resin, 1 part of cobalt naphthenate, 1.5 parts of pine tar, 0.6 part of sulfur and 1.2 parts of vulcanizing agent DCP. The nano SiO2/TiO2The preparation method of the composite particles comprises the following steps: mixing nanometer TiO2Dissolving the mixture in 0.025 wt.% of absolute ethanol solution of polyvinylpyrrolidone, uniformly dispersing, adding tetraethyl orthosilicate and ammonia water at the temperature of 35 ℃, reacting for 4-6 h, centrifuging, washing with water, and drying to obtain nano SiO2/TiO2Composite particles of nano TiO with a molar ratio of silicon to titanium of 2:12Ratio to 0.025 wt.% absolute ethanol solution of polyvinylpyrrolidone was 1 g: 150mL, the volume ratio of ammonia water to 0.025 wt.% absolute ethanol solution of polyvinylpyrrolidone is 1: 10.
Based on the preparation method of the water gate rubber sealing element with strong weather resistance, the steps are as follows:
weighing ethylene propylene diene monomer, brominated butyl rubber, carbon black, layered graphite and nano SiO according to the mass part ratio2/TiO2Composite particles, nano-alumina, multi-walled carbon nanotubes, tung oil, phenolic resin, cobalt naphthenate, pine tar, sulfur and a vulcanizing agent DCP;
step two, putting the ethylene propylene diene monomer rubber and the brominated butyl rubber into a 125 ℃ internal mixer, and mixing for 2 min;
step three, then adding nano SiO2/TiO2Compounding the particles, and continuously mixing for 3-4 min;
finally, adding carbon black, layered graphite, nano-alumina, multi-walled carbon nanotubes, tung oil, phenolic resin, cobalt naphthenate, pine tar, sulfur and a vulcanizing agent DCP, and mixing for 2-3 min;
and step five, taking the mixed colloid, thinly passing the colloid for 6 times, then sending the colloid into an extruder for extrusion forming, standing the mixture for one day, and then vulcanizing and shaping the mixture on a vulcanizing machine at the temperature of 145 ℃ for 25 min.
Example 2
A water gate rubber sealing element with strong weather resistance comprises the following raw materials in parts by weight: 60 parts of ethylene propylene diene monomer, 20 parts of brominated butyl rubber, 40 parts of carbon black, 2 parts of layered graphite and 0.5 part of nano SiO2/TiO2Composite particles, 0.2 part of nano aluminum oxide, 0.2 part of multi-walled carbon nano tube, 0.6 part of tung oil, 1.5 parts of phenolic resin, 1 part of cobalt naphthenate, 2 parts of pine tar, 0.5 part of sulfur and 1 part of vulcanizing agent DCP. The nano SiO2/TiO2Composite micro-meterThe preparation method of the granules comprises the following steps: mixing nanometer TiO2Dissolving the mixture in 0.025 wt.% of absolute ethanol solution of polyvinylpyrrolidone, uniformly dispersing, adding tetraethyl orthosilicate and ammonia water at the temperature of 35 ℃, reacting for 4-6 h, centrifuging, washing with water, and drying to obtain nano SiO2/TiO2Composite particles of nano TiO with a molar ratio of silicon to titanium of 2:12Ratio to 0.025 wt.% absolute ethanol solution of polyvinylpyrrolidone was 1 g: 150mL, the volume ratio of ammonia water to 0.025 wt.% absolute ethanol solution of polyvinylpyrrolidone is 1: 10.
Based on the preparation method of the water gate rubber sealing element with strong weather resistance, the steps are as follows:
weighing ethylene propylene diene monomer, brominated butyl rubber, carbon black, layered graphite and nano SiO according to the mass part ratio2/TiO2Composite particles, nano-alumina, multi-walled carbon nanotubes, tung oil, phenolic resin, cobalt naphthenate, pine tar, sulfur and a vulcanizing agent DCP;
placing the ethylene propylene diene monomer and the brominated butyl rubber into an internal mixer at 120 ℃ for mixing for 3 min;
step three, then adding nano SiO2/TiO2Compounding the particles, and continuously mixing for 3-4 min;
finally, adding carbon black, layered graphite, nano-alumina, multi-walled carbon nanotubes, tung oil, phenolic resin, cobalt naphthenate, pine tar, sulfur and a vulcanizing agent DCP, and mixing for 2-3 min;
and step five, taking the mixed colloid, thinly passing the colloid for 4 times, then sending the colloid into an extruder for extrusion forming, standing the mixture for one day, and then vulcanizing and shaping the mixture on a vulcanizing machine at 150 ℃ for 20 min.
Example 3
A water gate rubber sealing element with strong weather resistance comprises the following raw materials in parts by weight: 80 parts of ethylene propylene diene monomer, 40 parts of brominated butyl rubber, 50 parts of carbon black, 4 parts of layered graphite and 0.8 part of nano SiO2/TiO2Composite particles, 0.3 part of nano aluminum oxide, 0.3 part of multi-walled carbon nano tube, 0.8 part of tung oil, 2.5 parts of phenolic resin, 1.5 parts of cobalt naphthenate, 3 parts of pine tar, 0.8 part of sulfur and 1.3 parts of vulcanizing agent DCAnd P. The nano SiO2/TiO2The preparation method of the composite particles comprises the following steps: mixing nanometer TiO2Dissolving the mixture in 0.025 wt.% of absolute ethanol solution of polyvinylpyrrolidone, uniformly dispersing, adding tetraethyl orthosilicate and ammonia water at the temperature of 35 ℃, reacting for 4-6 h, centrifuging, washing with water, and drying to obtain nano SiO2/TiO2Composite particles of nano TiO with a molar ratio of silicon to titanium of 2:12Ratio to 0.025 wt.% absolute ethanol solution of polyvinylpyrrolidone was 1 g: 150mL, the volume ratio of ammonia water to 0.025 wt.% absolute ethanol solution of polyvinylpyrrolidone is 1: 10.
Based on the preparation method of the water gate rubber sealing element with strong weather resistance, the steps are as follows:
weighing ethylene propylene diene monomer, brominated butyl rubber, carbon black, layered graphite and nano SiO according to the mass part ratio2/TiO2Composite particles, nano-alumina, multi-walled carbon nanotubes, tung oil, phenolic resin, cobalt naphthenate, pine tar, sulfur and a vulcanizing agent DCP;
step two, putting the ethylene propylene diene monomer rubber and the brominated butyl rubber into a 125 ℃ internal mixer, and mixing for 2 min;
step three, then adding nano SiO2/TiO2Compounding the particles, and continuously mixing for 3-4 min;
finally, adding carbon black, layered graphite, nano-alumina, multi-walled carbon nanotubes, tung oil, phenolic resin, cobalt naphthenate, pine tar, sulfur and a vulcanizing agent DCP, and mixing for 2-3 min;
and step five, taking the mixed colloid, thinly passing the colloid for 4 times, then sending the colloid into an extruder for extrusion forming, standing the mixture for one day, and then vulcanizing and shaping the mixture on a vulcanizing machine at the temperature of 145 ℃ for 25 min.
Comparative example 1
The difference from example 1 is that no nano SiO is added2/TiO2And (3) compounding the particles. The specific process is as follows:
weighing ethylene propylene diene monomer, brominated butyl rubber, carbon black, layered graphite, nano-alumina, multi-walled carbon nanotubes, tung oil, phenolic resin, cobalt naphthenate, pine tar, sulfur and vulcanizing agent DCP according to the mass part ratio;
placing the ethylene propylene diene monomer and the brominated butyl rubber into a 125 ℃ internal mixer, and mixing for 5-6 min;
adding carbon black, layered graphite, nano-alumina, multi-walled carbon nanotubes, tung oil, phenolic resin, cobalt naphthenate, pine tar, sulfur and a vulcanizing agent DCP, and mixing for 2-3 min;
and step four, taking the mixed colloid, thinly passing the colloid for 6 times, then sending the colloid into an extruder for extrusion forming, standing the mixture for one day, and then vulcanizing and shaping the mixture on a vulcanizing machine at the temperature of 145 ℃ for 25 min.
Comparative example 2
The difference from example 1 is that no multi-walled carbon nanotubes were added. The specific process is as follows:
weighing ethylene propylene diene monomer, brominated butyl rubber, carbon black, layered graphite and nano SiO according to the mass part ratio2/TiO2Composite particles, nano-alumina, tung oil, phenolic resin, cobalt naphthenate, pine tar, sulfur and a vulcanizing agent DCP;
step two, putting the ethylene propylene diene monomer rubber and the brominated butyl rubber into a 125 ℃ internal mixer, and mixing for 2 min;
step three, then adding nano SiO2/TiO2Compounding the particles, and continuously mixing for 3-4 min;
finally, adding carbon black, layered graphite, nano aluminum oxide, tung oil, phenolic resin, cobalt naphthenate, pine tar, sulfur and a vulcanizing agent DCP, and mixing for 2-3 min;
and step five, taking the mixed colloid, thinly passing the colloid for 6 times, then sending the colloid into an extruder for extrusion forming, standing the mixture for one day, and then vulcanizing and shaping the mixture on a vulcanizing machine at the temperature of 145 ℃ for 25 min.
The products prepared in the above examples 1 to 3 and comparative examples 1 and 2 were subjected to performance tests, and standard water-gate rubber seals GB10706-89 were tested, with the following results:
from the results, the sluice rubber sealing element prepared by the invention meets the performance standard in the industry, and the compression set, hot air aging, distilled water soaking, adhesive strength and working in the temperature environment of-40 ℃ to 40 ℃ all show excellent performance. In comparative example 1, the hot air aging performance is to be improved compared with example 1; comparative example 2 was slightly inferior to example 1 in the immersion in distilled water.
Claims (8)
1. The water gate rubber sealing element with strong weather resistance is characterized by comprising the following raw materials in parts by mass: 60-80 parts of ethylene propylene diene monomer, 20-40 parts of brominated butyl rubber, 40-50 parts of carbon black, 2-4 parts of layered graphite and 0.5-0.8 part of nano SiO2/TiO2The composite particles, 0.2-0.3 part of nano aluminum oxide, 0.2-0.3 part of multi-walled carbon nano tube, 0.6-0.8 part of tung oil, 1.5-2.5 parts of phenolic resin, 1-1.5 parts of cobalt naphthenate, 2-3 parts of pine tar, 0.5-0.8 part of sulfur and 1-1.3 parts of vulcanizing agent DCP.
2. The water gate rubber sealing element with strong weather resistance as claimed in claim 1, is characterized in that the raw materials are as follows according to the mass portion ratio: 70 parts of ethylene propylene diene monomer, 30 parts of brominated butyl rubber, 45 parts of carbon black, 3 parts of layered graphite and 0.6 part of nano SiO2/TiO2Composite particles, 0.2 part of nano-alumina, 0.3 part of multi-walled carbon nano-tube, 0.8 part of tung oil, 1 part of phenolic resin, 1 part of cobalt naphthenate, 1.5 parts of pine tar, 0.6 part of sulfur and 1.2 parts of vulcanizing agent DCP.
3. The water gate rubber sealing element with strong weather resistance as claimed in claim 1, is characterized in that the raw materials are as follows according to the mass portion ratio: 60 parts of ethylene propylene diene monomer, 20 parts of brominated butyl rubber, 40 parts of carbon black, 2 parts of layered graphite and 0.5 part of nano SiO2/TiO2Composite particles, 0.2 parts of nano alumina and 0.2 parts of multi-wallCarbon nano tube, 0.6 part of tung oil, 1.5 parts of phenolic resin, 1 part of cobalt naphthenate, 2 parts of pine tar, 0.5 part of sulfur and 1 part of vulcanizing agent DCP.
4. The water gate rubber sealing element with strong weather resistance as claimed in claim 1, is characterized in that the raw materials are as follows according to the mass portion ratio: 80 parts of ethylene propylene diene monomer, 40 parts of brominated butyl rubber, 50 parts of carbon black, 4 parts of layered graphite and 0.8 part of nano SiO2/TiO2Composite particles, 0.3 part of nano-alumina, 0.3 part of multi-walled carbon nano-tube, 0.8 part of tung oil, 2.5 parts of phenolic resin, 1.5 parts of cobalt naphthenate, 3 parts of pine tar, 0.8 part of sulfur and 1.3 parts of vulcanizing agent DCP.
5. The high weather-resistant sluice rubber seal according to claim 1, wherein said nano SiO is2/TiO2The preparation method of the composite particles comprises the following steps: mixing nanometer TiO2Dissolving the mixture in 0.025 wt.% of absolute ethanol solution of polyvinylpyrrolidone, uniformly dispersing, adding tetraethyl orthosilicate and ammonia water at the temperature of 35 ℃, reacting for 4-6 h, centrifuging, washing with water, and drying to obtain nano SiO2/TiO2Composite particles of nano TiO with a molar ratio of silicon to titanium of 2:12Ratio to 0.025 wt.% absolute ethanol solution of polyvinylpyrrolidone was 1 g: 150mL, the volume ratio of ammonia water to 0.025 wt.% absolute ethanol solution of polyvinylpyrrolidone is 1: 10.
6. The preparation method of the water gate rubber sealing element with strong weather resistance based on the claim 1 is characterized by comprising the following steps:
weighing ethylene propylene diene monomer, brominated butyl rubber, carbon black, layered graphite and nano SiO according to the mass part ratio2/TiO2Composite particles, nano-alumina, multi-walled carbon nanotubes, tung oil, phenolic resin, cobalt naphthenate, pine tar, sulfur and a vulcanizing agent DCP;
placing the ethylene propylene diene monomer and the brominated butyl rubber into an internal mixer at the temperature of 120-125 ℃ for mixing for 2-3 min;
step three, then adding nano SiO2/TiO2Compounding the particles, and continuously mixing for 3-4 min;
finally, adding carbon black, layered graphite, nano-alumina, multi-walled carbon nanotubes, tung oil, phenolic resin, cobalt naphthenate, pine tar, sulfur and a vulcanizing agent DCP, and mixing for 2-3 min;
and step five, taking the mixed colloid, thinly passing the colloid for 4-6 times, then sending the colloid into an extruder for extrusion forming, standing the colloid for one day, and then vulcanizing and shaping the colloid on a vulcanizing machine at the temperature of 145-150 ℃ for 20-25 min.
7. The method for preparing the water gate rubber sealing element with high weather resistance as claimed in claim 6, wherein in the second step, the ethylene propylene diene monomer and the brominated butyl rubber are placed in an internal mixer at 125 ℃ and mixed for 2 min.
8. The method for preparing the sluice rubber sealing element with strong weather resistance as claimed in claim 6, wherein the colloid obtained in the fifth step is subjected to thin-pass for 6 times after mixing, then sent into an extruder for extrusion forming, and then placed for one day and vulcanized and shaped on a vulcanizing machine at 145 ℃ for 25 min.
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| CN118374036A (en) * | 2024-05-23 | 2024-07-23 | 无锡市锡西化机配件有限公司 | High-performance composite sealing gasket and preparation method thereof |
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