CN105111648A - High performance fluororubber gasket for vehicle and preparation method for high performance fluororubber gasket - Google Patents
High performance fluororubber gasket for vehicle and preparation method for high performance fluororubber gasket Download PDFInfo
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Abstract
The present invention discloses a high performance fluororubber gasket for vehicles. The high performance fluororubber gasket for vehicles comprises the raw materials in parts by weight: 70-90 parts of modified fluororubber, 15-20 parts of a copolymer of perfluoroalkyl vinyl ether and ethylene, 5-10 parts of isoprene rubber, 20-40 parts of methyl vinylsilicone rubber, 20-30 parts of white carbon black, 10-15 parts of nano zinc oxide, 5-10 parts of clay, 10-20 parts of barium sulphate, 5-10 parts of quartz powder, 1-2 parts of benzoyl peroxide, 1-3 parts of dicumyl peroxide, 0.1-0.8 part of magnesium oxide, 1-2 parts of methyl phenyl diethoxy silane, 1-3 parts of polydimethylsiloxane, 2-6 parts of triallylcyanurate, 1-2 parts of polyethylene wax, 1-2 parts of stearic acid, 1-3 parts of asphalt and 1-3 parts of glycidyl ester. The present invention invention further discloses a preparation method for the high performance fluororubber gasket for vehicles. The high performance fluororubber gasket for vehicles disclosed by the present invention is good in resistance to permanent compressive deformation, simple in preparation method and convenient in actual operation.
Description
Technical field
The present invention relates to fluororubber pad technical field, particularly relate to a kind of automotive high-performance fluororubber pad and preparation method thereof.
Background technology
Synthesis macromolecular elastomer containing fluorine atom on the carbon atom that viton refers to main chain or side chain.Viton has the characteristic that high temperature resistant, oil resistant and resistant to many pharmaceutical chemicals corrode, and is the indispensable materials of top science technology such as modern Aviation, guided missile, rocket, space travel.But the requirement of automobile pad to viton is now higher, such as requires higher elasticity and resistance to permanent compression set.
Summary of the invention
The present invention proposes a kind of automotive high-performance fluororubber pad and preparation method thereof, good springiness, resistance to permanent compression set is good, and preparation method is simple, is convenient to actually operating.
A kind of automotive high-performance fluororubber pad that the present invention proposes, its raw material comprises by weight: modification viton 70-90 part, copolymer 1 5-20 part of perfluoroalkyl vinyl ether and ethene, synthetic polyisoprene 5-10 part, methyl vinyl silicone rubber 20-40 part, white carbon black 20-30 part, nano zine oxide 10-15 part, clay 5-10 part, barium sulfate 10-20 part, silica powder 5-10 part, benzoyl peroxide 1-2 part, dicumyl peroxide 1-3 part, magnesium oxide 0.1-0.8 part, aminomethyl phenyl diethoxy silane 1-2 part, polydimethylsiloxane 1-3 part, triallylcyanurate 2-6 part, polyethylene wax 1-2 part, stearic acid 1-2 part, pitch 1-3 part, glycidyl ester 1-3 part.
Preferably, described modification viton adopts following technique to prepare: by weight by 50-80 part water, 0.2-0.5 part Sodium perfluorooctanoate and 1-3 part dipotassium hydrogen phosphate mix and then add 40-60 part vinylidene and mix, add 0.01-0.05 part Sodium Persulfate to be polymerized, polymerization reaction time is 40-60min, add 5-10 part diethyl malonate and stir 20-30min, continue to add 10-30 part trifluoro polyethylene to be polymerized, polymerization pressure is 1-2MPa, polymeric reaction temperature is 100-115 DEG C, polymerization time is 20-30min, cohesion, washing, dry, plasticate and shapingly obtain modification viton.
Preferably, the weight ratio of vinylidene, trifluoro polyethylene and diethyl malonate is 50-54:20-24:6-8.
Preferably, the weight ratio of the multipolymer of modification viton, perfluoroalkyl vinyl ether and ethene, synthetic polyisoprene and methyl vinyl silicone rubber is 78-82:16-18:6-8:30-36.
Preferably, the weight ratio of white carbon black, nano zine oxide, clay, barium sulfate and silica powder is 22-25:11-13:6-8:14-16 part 6-8.
Preferably, the weight ratio of benzoyl peroxide, dicumyl peroxide and triallylcyanurate is 1.2-1.4:1.5-2:3-4.
Preferably, its raw material comprises by weight: modification viton 78-82 part, copolymer 1 6-18 part of perfluoroalkyl vinyl ether and ethene, synthetic polyisoprene 6-8 part, methyl vinyl silicone rubber 30-36 part, white carbon black 22-25 part, nano zine oxide 11-13 part, clay 6-8 part, barium sulfate 14-16 part, silica powder 6-8 part, benzoyl peroxide 1.2-1.4 part, dicumyl peroxide 1.5-2 part, magnesium oxide 0.2-0.4 part, aminomethyl phenyl diethoxy silane 1.4-1.6 part, polydimethylsiloxane 2-2.6 part, triallylcyanurate 3-4 part, polyethylene wax 1.5-1.58 part, stearic acid 1.4-1.6 part, pitch 1.5-2 part, glycidyl ester 2-2.8 part.
Disclosed in the present invention also, a kind of preparation technology of automotive high-performance fluororubber pad, comprises the steps:
S1, methyl vinyl silicone rubber, white carbon black, nano zine oxide, clay, barium sulfate, silica powder, aminomethyl phenyl diethoxy silane, polydimethylsiloxane are sent in mill and mixed, mixing temperature is 50-70 DEG C, mixing time is 1-2h, thin-pass 1-5 time, slice, obtains the first prefabricated material;
S2, the multipolymer of modification viton, perfluoroalkyl vinyl ether and ethene, synthetic polyisoprene are sent into mill mixing, melting temperature is 60-75 DEG C, mixing time is 20-40min, raised temperature is to 80-86 DEG C, add magnesium oxide mixing, mixing time is 20-50min, and bag roller obtains the second prefabricated material;
S3, under whipped state, the first prefabricated material is added in the second prefabricated material, adding speed is 1-3 part/min, add completely and continue to stir 20-30min, continue to add benzoyl peroxide, dicumyl peroxide, triallylcyanurate, polyethylene wax, stearic acid, pitch, glycidyl ester are mixing, melting temperature is 60-80 DEG C, mixing time is 10-20min, obtains the 3rd prefabricated material;
S4, the 3rd prefabricated material is sent into sulfuration in vulcanizer, curing temperature is 150-180 DEG C, and curing time is 10-18min, and send in baking oven and heat, Heating temperature is 120-140 DEG C, and heat-up time is 5-10h, obtains viton diaphragm seal.
In the present invention, with the multipolymer of modification viton, perfluoroalkyl vinyl ether and ethene, synthetic polyisoprene and methyl vinyl silicone rubber for major ingredient, good springiness, resistance to permanent compression set is good; In the preparation process of modification viton, using vinylidene and trifluoro polyethylene as polymerization single polymerization monomer, using Sodium Persulfate as initiator, and add appropriate diethyl malonate, and the conservative control joining day with add rear stirring extent and effectively can regulate the molecular size range of product, by limiting the molecular structure after vinylidene and trifluoro polyethylene polymerization, and diethyl malonate is introduced on molecular chain, resistance to permanent compression set is good, and good processability, not easily produce trace during sulfuration; Adopt benzoyl peroxide, dicumyl peroxide and triallylcyanurate as vulcanization system, triallylcyanurate effectively can assist crosslinking reaction, improve cross-linking efficiency, make sizing material have good incipient scorch simultaneously, adopt the goods elasticity of this vulcanization system, under high temperature, compression set resistant is good; Adopt white carbon black, nano zine oxide, clay, barium sulfate and silica powder as reinforcing and filling system, there is high fillibility, and goods wear resistance is good, product can be made to have heat-resisting, oil resistant, low compression deformation rate, high resilience and low delayed feature; The magnesium oxide added, polyethylene wax, pitch, glycidyl ester, have good consistency with base-material, possesses high lubricant effect, and it effectively can improve the mobility of sizing material, viscosity and release property, and elasticity and resistance to permanent compression set strengthen further.
Accompanying drawing explanation
Fig. 1 is preparation technology's schema of a kind of automotive high-performance fluororubber pad that the present invention proposes.
Embodiment
As shown in Figure 1, Fig. 1 is preparation technology's schema of a kind of automotive high-performance fluororubber pad that the present invention proposes.
Below, by specific embodiment, technical scheme of the present invention is described in detail.
Embodiment 1
A kind of automotive high-performance fluororubber pad, its raw material comprises by weight: modification viton 70 parts, the multipolymer of perfluoroalkyl vinyl ether and ethene 20 parts, synthetic polyisoprene 5 parts, methyl vinyl silicone rubber 39 parts, white carbon black 20 parts, nano zine oxide 15 parts, clay 5 parts, 19 parts, barium sulfate, silica powder 5 parts, benzoyl peroxide 2 parts, dicumyl peroxide 1 part, 0.75 part, magnesium oxide, aminomethyl phenyl diethoxy silane 1 part, polydimethylsiloxane 3 parts, triallylcyanurate 2 parts, polyethylene wax 1.9 parts, stearic acid 1 part, pitch 3 parts, glycidyl ester 1 part.
Embodiment 2
A kind of automotive high-performance fluororubber pad, its raw material comprises by weight: modification viton 90 parts, the copolymer 1 of perfluoroalkyl vinyl ether and ethene 5 parts, synthetic polyisoprene 10 parts, methyl vinyl silicone rubber 21 parts, white carbon black 30 parts, nano zine oxide 10 parts, clay 10 parts, 11 parts, barium sulfate, silica powder 10 parts, benzoyl peroxide 1 part, dicumyl peroxide 3 parts, 0.12 part, magnesium oxide, aminomethyl phenyl diethoxy silane 2 parts, polydimethylsiloxane 1 part, triallylcyanurate 6 parts, polyethylene wax 1.1 parts, stearic acid 2 parts, pitch 1 part, glycidyl ester 3 parts.
Embodiment 3
A kind of automotive high-performance fluororubber pad, its raw material comprises by weight: modification viton 82 parts, the copolymer 1 of perfluoroalkyl vinyl ether and ethene 6 parts, synthetic polyisoprene 7.9 parts, methyl vinyl silicone rubber 30 parts, white carbon black 25 parts, nano zine oxide 11 parts, clay 7.2 parts, 14 parts, barium sulfate, silica powder 8 parts, benzoyl peroxide 1.2 parts, dicumyl peroxide 1.95 parts, 0.2 part, magnesium oxide, aminomethyl phenyl diethoxy silane 1.6 parts, polydimethylsiloxane 2 parts, triallylcyanurate 3.8 parts, polyethylene wax 1.5 parts, stearic acid 1.6 parts, pitch 1.5 parts, glycidyl ester 2.7 parts.
Described modification viton adopts following technique to prepare: 50 parts of water, 0.5 part of Sodium perfluorooctanoate and 1 part of dipotassium hydrogen phosphate are mixed by weight and then add 58 parts of vinylidenes and mix, add 0.01 part of Sodium Persulfate to be polymerized, polymerization reaction time is 60min, add 5 parts of diethyl malonates and stir 28min, continue to add 10 parts of trifluoro polyethylene to be polymerized, polymerization pressure is 2MPa, polymeric reaction temperature is 100 DEG C, polymerization time is 29min, cohesion, washing, dry, plasticating shapingly obtains modification viton.
With reference to Fig. 1, the preparation technology of described automotive high-performance fluororubber pad, comprises the steps:
S1, methyl vinyl silicone rubber, white carbon black, nano zine oxide, clay, barium sulfate, silica powder, aminomethyl phenyl diethoxy silane, polydimethylsiloxane are sent in mill and mixed, mixing temperature is 50 DEG C, mixing time is 2h, thin-pass 1 time, slice, obtains the first prefabricated material;
S2, the multipolymer of modification viton, perfluoroalkyl vinyl ether and ethene, synthetic polyisoprene are sent into mill mixing, melting temperature is 73 DEG C, and mixing time is 20min, raised temperature to 86 DEG C, add magnesium oxide mixing, mixing time is 20min, and bag roller obtains the second prefabricated material;
S3, under whipped state, the first prefabricated material is added in the second prefabricated material, adding speed is 2.8 parts/min, add completely and continue to stir 20min, continue to add benzoyl peroxide, dicumyl peroxide, triallylcyanurate, polyethylene wax, stearic acid, pitch, glycidyl ester are mixing, melting temperature is 80 DEG C, mixing time is 10min, obtains the 3rd prefabricated material;
S4, the 3rd prefabricated material is sent into sulfuration in vulcanizer, curing temperature is 179 DEG C, and curing time is 10min, and send in baking oven and heat, Heating temperature is 140 DEG C, and heat-up time is 5h, obtains viton diaphragm seal.
Embodiment 4
A kind of automotive high-performance fluororubber pad, its raw material comprises by weight: modification viton 78 parts, the copolymer 1 of perfluoroalkyl vinyl ether and ethene 8 parts, synthetic polyisoprene 6.2 parts, methyl vinyl silicone rubber 36 parts, white carbon black 22 parts, nano zine oxide 13 parts, clay 6.2 parts, 16 parts, barium sulfate, silica powder 6 parts, benzoyl peroxide 1.4 parts, dicumyl peroxide 1.54 parts, 0.4 part, magnesium oxide, aminomethyl phenyl diethoxy silane 1.4 parts, polydimethylsiloxane 2.6 parts, triallylcyanurate 3.1 parts, polyethylene wax 1.58 parts, stearic acid 1.4 parts, pitch 2 parts, glycidyl ester 2.1 parts.
Described modification viton adopts following technique to prepare: 80 parts of water, 0.2 part of Sodium perfluorooctanoate and 3 parts of dipotassium hydrogen phosphates are mixed by weight and then add 41 parts of vinylidenes and mix, add 0.05 part of Sodium Persulfate to be polymerized, polymerization reaction time is 40min, add 10 parts of diethyl malonates and stir 22min, continue to add 30 parts of trifluoro polyethylene to be polymerized, polymerization pressure is 1MPa, polymeric reaction temperature is 115 DEG C, polymerization time is 21min, cohesion, washing, dry, plasticating shapingly obtains modification viton.
The preparation technology of described automotive high-performance fluororubber pad, comprises the steps:
S1, methyl vinyl silicone rubber, white carbon black, nano zine oxide, clay, barium sulfate, silica powder, aminomethyl phenyl diethoxy silane, polydimethylsiloxane are sent in mill and mixed, mixing temperature is 70 DEG C, mixing time is 1h, thin-pass 5 times, slice, obtains the first prefabricated material;
S2, the multipolymer of modification viton, perfluoroalkyl vinyl ether and ethene, synthetic polyisoprene are sent into mill mixing, melting temperature is 62 DEG C, and mixing time is 40min, raised temperature to 80 DEG C, add magnesium oxide mixing, mixing time is 50min, and bag roller obtains the second prefabricated material;
S3, under whipped state, the first prefabricated material is added in the second prefabricated material, adding speed is 1 part/min, add completely and continue to stir 30min, continue to add benzoyl peroxide, dicumyl peroxide, triallylcyanurate, polyethylene wax, stearic acid, pitch, glycidyl ester are mixing, melting temperature is 60 DEG C, mixing time is 20min, obtains the 3rd prefabricated material;
S4, the 3rd prefabricated material is sent into sulfuration in vulcanizer, curing temperature is 152 DEG C, and curing time is 18min, and send in baking oven and heat, Heating temperature is 120 DEG C, and heat-up time is 10h, obtains viton diaphragm seal.
Embodiment 5
A kind of automotive high-performance fluororubber pad, its raw material comprises by weight: modification viton 81 parts, the copolymer 1 of perfluoroalkyl vinyl ether and ethene 7.6 parts, synthetic polyisoprene 7.2 parts, methyl vinyl silicone rubber 32 parts, white carbon black 24 parts, nano zine oxide 12.4 parts, clay 7.6 parts, barium sulfate 15 silica powder 7.2 parts, benzoyl peroxide 1.35 parts, dicumyl peroxide 1.8 parts, 0.32 part, magnesium oxide, aminomethyl phenyl diethoxy silane 1.52 parts, polydimethylsiloxane 2.4 parts, triallylcyanurate 3..2 part, polyethylene wax 1.52 parts, stearic acid 1.5 parts, pitch 1.8 parts, glycidyl ester 2.4 parts.
Described modification viton adopts following technique to prepare: 72 parts of water, 0.35 part of Sodium perfluorooctanoate and 1.8 parts of dipotassium hydrogen phosphates are mixed by weight and then add 52 parts of vinylidenes and mix, add 0.025 part of Sodium Persulfate to be polymerized, polymerization reaction time is 52min, add 7.8 parts of diethyl malonates and stir 24min, continue to add 24 parts of trifluoro polyethylene to be polymerized, polymerization pressure is 1.4MPa, polymeric reaction temperature is 108 DEG C, polymerization time is 24min, cohesion, washing, dry, plasticating shapingly obtains modification viton.
The preparation technology of described automotive high-performance fluororubber pad, comprises the steps:
S1, methyl vinyl silicone rubber, white carbon black, nano zine oxide, clay, barium sulfate, silica powder, aminomethyl phenyl diethoxy silane, polydimethylsiloxane are sent in mill and mixed, mixing temperature is 62 DEG C, mixing time is 1.4h, thin-pass 3 times, slice, obtains the first prefabricated material;
S2, the multipolymer of modification viton, perfluoroalkyl vinyl ether and ethene, synthetic polyisoprene are sent into mill mixing, melting temperature is 72 DEG C, and mixing time is 36min, raised temperature to 82 DEG C, add magnesium oxide mixing, mixing time is 42min, and bag roller obtains the second prefabricated material;
S3, under whipped state, the first prefabricated material is added in the second prefabricated material, adding speed is 2.6 parts/min, add completely and continue to stir 26min, continue to add benzoyl peroxide, dicumyl peroxide, triallylcyanurate, polyethylene wax, stearic acid, pitch, glycidyl ester are mixing, melting temperature is 72 DEG C, mixing time is 16min, obtains the 3rd prefabricated material;
S4, the 3rd prefabricated material is sent into sulfuration in vulcanizer, curing temperature is 172 DEG C, and curing time is 16min, and send in baking oven and heat, Heating temperature is 135 DEG C, and heat-up time is 8h, obtains viton diaphragm seal.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (8)
1. an automotive high-performance fluororubber pad, it is characterized in that, its raw material comprises by weight: modification viton 70-90 part, copolymer 1 5-20 part of perfluoroalkyl vinyl ether and ethene, synthetic polyisoprene 5-10 part, methyl vinyl silicone rubber 20-40 part, white carbon black 20-30 part, nano zine oxide 10-15 part, clay 5-10 part, barium sulfate 10-20 part, silica powder 5-10 part, benzoyl peroxide 1-2 part, dicumyl peroxide 1-3 part, magnesium oxide 0.1-0.8 part, aminomethyl phenyl diethoxy silane 1-2 part, polydimethylsiloxane 1-3 part, triallylcyanurate 2-6 part, polyethylene wax 1-2 part, stearic acid 1-2 part, pitch 1-3 part, glycidyl ester 1-3 part.
2. automotive high-performance fluororubber pad according to claim 1, it is characterized in that, described modification viton adopts following technique to prepare: by weight by 50-80 part water, 0.2-0.5 part Sodium perfluorooctanoate and 1-3 part dipotassium hydrogen phosphate mix and then add 40-60 part vinylidene and mix, add 0.01-0.05 part Sodium Persulfate to be polymerized, polymerization reaction time is 40-60min, add 5-10 part diethyl malonate and stir 20-30min, continue to add 10-30 part trifluoro polyethylene to be polymerized, polymerization pressure is 1-2MPa, polymeric reaction temperature is 100-115 DEG C, polymerization time is 20-30min, cohesion, washing, dry, plasticate and shapingly obtain modification viton.
3. automotive high-performance fluororubber pad according to claim 2, is characterized in that, the weight ratio of vinylidene, trifluoro polyethylene and diethyl malonate is 50-54:20-24:6-8.
4. the automotive high-performance fluororubber pad according to any one of claim 1-3, it is characterized in that, the weight ratio of the multipolymer of modification viton, perfluoroalkyl vinyl ether and ethene, synthetic polyisoprene and methyl vinyl silicone rubber is 78-82:16-18:6-8:30-36.
5. the automotive high-performance fluororubber pad according to any one of claim 1-4, is characterized in that, the weight ratio of white carbon black, nano zine oxide, clay, barium sulfate and silica powder is 22-25:11-13:6-8:14-16 part 6-8.
6. the automotive high-performance fluororubber pad according to any one of claim 1-5, is characterized in that, the weight ratio of benzoyl peroxide, dicumyl peroxide and triallylcyanurate is 1.2-1.4:1.5-2:3-4.
7. the automotive high-performance fluororubber pad according to any one of claim 1-6, it is characterized in that, its raw material comprises by weight: modification viton 78-82 part, copolymer 1 6-18 part of perfluoroalkyl vinyl ether and ethene, synthetic polyisoprene 6-8 part, methyl vinyl silicone rubber 30-36 part, white carbon black 22-25 part, nano zine oxide 11-13 part, clay 6-8 part, barium sulfate 14-16 part, silica powder 6-8 part, benzoyl peroxide 1.2-1.4 part, dicumyl peroxide 1.5-2 part, magnesium oxide 0.2-0.4 part, aminomethyl phenyl diethoxy silane 1.4-1.6 part, polydimethylsiloxane 2-2.6 part, triallylcyanurate 3-4 part, polyethylene wax 1.5-1.58 part, stearic acid 1.4-1.6 part, pitch 1.5-2 part, glycidyl ester 2-2.8 part.
8. a preparation technology for the automotive high-performance fluororubber pad according to any one of claim 1-7, is characterized in that, comprise the steps:
S1, methyl vinyl silicone rubber, white carbon black, nano zine oxide, clay, barium sulfate, silica powder, aminomethyl phenyl diethoxy silane, polydimethylsiloxane are sent in mill and mixed, mixing temperature is 50-70 DEG C, mixing time is 1-2h, thin-pass 1-5 time, slice, obtains the first prefabricated material;
S2, the multipolymer of modification viton, perfluoroalkyl vinyl ether and ethene, synthetic polyisoprene are sent into mill mixing, melting temperature is 60-75 DEG C, mixing time is 20-40min, raised temperature is to 80-86 DEG C, add magnesium oxide mixing, mixing time is 20-50min, and bag roller obtains the second prefabricated material;
S3, under whipped state, the first prefabricated material is added in the second prefabricated material, adding speed is 1-3 part/min, add completely and continue to stir 20-30min, continue to add benzoyl peroxide, dicumyl peroxide, triallylcyanurate, polyethylene wax, stearic acid, pitch, glycidyl ester are mixing, melting temperature is 60-80 DEG C, mixing time is 10-20min, obtains the 3rd prefabricated material;
S4, the 3rd prefabricated material is sent into sulfuration in vulcanizer, curing temperature is 150-180 DEG C, and curing time is 10-18min, and send in baking oven and heat, Heating temperature is 120-140 DEG C, and heat-up time is 5-10h, obtains viton diaphragm seal.
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| CN106566138A (en) * | 2016-10-28 | 2017-04-19 | 当涂县金龙机械有限公司 | Heat-aging-resistant triplet fluororubber non-metallic compensator and preparing method thereof |
| CN106947191A (en) * | 2017-03-21 | 2017-07-14 | 宁国市睿普新锐橡塑科技有限公司 | Automobile engine pad production material, production method and automobile engine pad |
| CN108482800A (en) * | 2018-04-02 | 2018-09-04 | 格润智能光伏南通有限公司 | A kind of photovoltaic module general-purpose type turnover pallet |
| CN110682558A (en) * | 2019-10-12 | 2020-01-14 | 东港久久胶业有限公司 | Preparation method of silicone membrane |
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Application publication date: 20151202 |
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