CN102585514A - Oil-resistant silicon rubber - Google Patents
Oil-resistant silicon rubber Download PDFInfo
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- CN102585514A CN102585514A CN2012100484301A CN201210048430A CN102585514A CN 102585514 A CN102585514 A CN 102585514A CN 2012100484301 A CN2012100484301 A CN 2012100484301A CN 201210048430 A CN201210048430 A CN 201210048430A CN 102585514 A CN102585514 A CN 102585514A
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Abstract
The invention provides an oil-resistant silicon rubber composition. The composition comprises the following components in parts by weight: (a) crude methylvinyl silicon rubber including 71+/-2 parts of methylvinyl silicon rubber containing 0.07-0.09 percent of vinyl and 29+/-2 parts of methylvinyl silicon rubber containing 0.15-0.17 percent of vinyl, wherein the number average molecular weights of the two types of rubber are 580,000-620,000, (b) 2.2+/-0.5 parts of hydroxyl silicon oil, (c) 1.4+/-0.2 parts of hydrogen-containing silicon oil and (d) an oil-resistant component including 42+/-10 parts of white carbon black which is precipitated white carbon black, 1.1+/-0.2 parts of dimethyl silicon oil of which the polymerization degree is between 150 and 300, 9+/-2 parts of pot clay of 3000+/-500 meshes, and 5+/-0.5 parts of polytetrafluoroethylene, wherein the total weight of the components (a), (b), (c) and (d) accounts for 90-100 percent of the total weight of the composition. The invention further provides oil-resistant silicon rubber and a preparation method and an application thereof.
Description
Technical field
The present invention relates to a kind of Zylox, relate to a kind of resistance oil silicone rubber particularly.Said resistance oil silicone rubber can be used for doing O type circle, spark coil, rubber roll, pad etc.
Background technology
At present, oil resistant glue has demand widely.The kind of the oil resistant glue on the market is also a lot, and main kind is a butyronitrile, hydrogenated butyronitrile, trifluoropropyl siloxane.Wherein, butadiene-acrylonitrile rubber, hydrogenated butyronitrile etc. has good oil resistant effect, but can not be high temperature resistant; The cost of hydrogenated butyronitrile and fluorine silica gel is very high simultaneously.
And present Zylox is by methyl ethylene rubber, WHITE CARBON BLACK, hydroxy silicon oil, and containing hydrogen silicone oil and Zinic stearas are mediated through kneader high temperature, but silica obtained oil resistant characteristic is relatively poor.
In sum, this area lacks a kind of resistance oil silicone rubber, and this sizing material solves the characteristics of the non-refractory of above sizing material, also solves the expensive problem of some sizing materials, also has good complete processing, and has good oil resistant effect.
Therefore, this area presses for the resistance oil silicone rubber that exploitation meets above-mentioned requirements.
Summary of the invention
First purpose of the present invention is to obtain a kind of resistance oil silicone rubber compsn, and this sizing material solves the characteristics of the non-refractory of above sizing material, also solves the expensive problem of some sizing materials, also has good complete processing, and has good oil resistant effect.
Second purpose of the present invention is to obtain a kind of resistance oil silicone rubber, and this sizing material solves the characteristics of the non-refractory of above sizing material, also solves the expensive problem of some sizing materials, also has good complete processing, and has good oil resistant effect.
The 3rd purpose of the present invention is to obtain a kind of preparation method of resistance oil silicone rubber, and this sizing material solves the characteristics of the non-refractory of above sizing material, also solves the expensive problem of some sizing materials, also has good complete processing, and has good oil resistant effect.
The 4th purpose of the present invention is to obtain a kind of goods of resistance oil silicone rubber, and this sizing material solves the characteristics of the non-refractory of above sizing material, also solves the expensive problem of some sizing materials, also has good complete processing, and has good oil resistant effect.
The 5th purpose of the present invention is to obtain a kind of purposes of resistance oil silicone rubber, and this sizing material solves the characteristics of the non-refractory of above sizing material, also solves the expensive problem of some sizing materials, also has good complete processing, and has good oil resistant effect.
In first aspect of the present invention, a kind of resistance oil silicone rubber compsn is provided, said compsn comprises following parts by weight:
(a) methyl vinyl silicon kautschuk; 29 ± 2 parts of the methyl vinyl silicon kautschuks and the number-average molecular weight of the two that comprise 71 ± 2 parts of contents of ethylene 0.07%-0.09% methyl vinyl silicon kautschuks, contents of ethylene 0.15-0.17% are between 58-62 ten thousand
(b) hydroxy silicon oil is 2.2 ± 0.5 parts,
(c) containing hydrogen silicone oil is 1.4 ± 0.2 parts, and
(d) oil resistant component, said oil resistant component comprises:
42 ± 10 parts of WHITE CARBON BLACKs, said WHITE CARBON BLACK are precipitated silica;
1.1 ± 0.2 parts of dimethyl silicone oils, the polymerization degree of said dimethyl silicone oil are between the 150-300;
9 ± 2 parts in 3000 ± 500 purpose potter's clay,
5 ± 0.5 parts of tetrafluoroethylene,
The 90-100% that the weight of component (a)～(d) accounts for said composition total weight calculates with composition total weight.
Oil resistant composition of the present invention is mainly at potter's clay, tetrafluoroethylene, precipitated silica, methyl-silicone oil.Compare with existing oil resistant glue, it has used lower-cost potter's clay as filler, and cost has had very big improvement, and has obtained good oil resistant effect.
In an embodiment of the present invention, said hydroxy silicon oil is selected from low polymerization degree α, the alpha, omega-dihydroxy polymethyl siloxane.
In an embodiment, said low polymerization degree α, the polymerization degree of alpha, omega-dihydroxy polymethyl siloxane is between 150-300.
In an embodiment of the present invention, said compsn also contains additive, and said additive comprises:
0.2 ± 0.05 part of inner pattern releasing agent applicable,
2 ± 0.5 parts of silane coupling agents,
0.22 ± 0.02 part of inner pattern releasing agent applicable.
In an embodiment of the present invention, said inner pattern releasing agent applicable for example is a Zinic stearas.
In an embodiment, use methyl vinyl silicon kautschuk, its contents of ethylene 0.07%-0.09%71 part, 0.15-0.17%29 part, molecular weight are at 58-62 ten thousand; Low polymerization degree α, 2.2 parts of alpha, omega-dihydroxy polymethyl siloxanes (hydroxy silicon oil), 1.4 parts of containing hydrogen silicone oils; The polymerization degree is 1.1 parts of the dimethyl silicone oils of 150-300,0.2 part of inner pattern releasing agent applicable, 42 parts of precipitated silicas; 9 parts in 3000 order potter's clay, 2 parts of silane coupling agents, 5 parts of tetrafluoroethylene; 1.2 parts of inner pattern releasing agent applicables, its oil resistant composition is mainly at potter's clay, tetrafluoroethylene, precipitated silica, methyl-silicone oil.Compare with existing oil resistant glue, it has used lower-cost potter's clay as filler, and cost has had very big improvement, and has obtained good oil resistant effect.
The resistance oil silicone rubber that second aspect of the present invention provides a kind of compsn of the present invention to make.
In an embodiment of the present invention, according to its oil resistance of GB/Tl690-2006 standard test, its volume change is not higher than 36%.
The third aspect of the invention provides a kind of preparation method of resistance oil silicone rubber of the present invention, and it comprises the steps:
Component of the present invention is provided;
Said component is mediated at 110-175 ℃, vacuumizes aftershaping and obtains resistance oil silicone rubber.
Preferably, said component is mediated at 110-120 ℃.
In an embodiment of the present invention, said component repeatedly feeding mode is fed in raw material.
In an embodiment, rubber 0.08%, 0.16% is put into kneader, WHITE CARBON BLACK is added general 3-4 time in batches; Each add WHITE CARBON BLACK next time after agglomerating, when adding WHITE CARBON BLACK for the second time, begin to add hydroxy silicon oil, the last containing hydrogen silicone oil, dimethyl silicone oil of adding when agglomerating; Mediate built-in temperature at last about 110-120 ℃, sizing material becomes agglomerate, begins to vacuumize, and vacuum tightness is-0.075 ± 0.002; Pumpdown time, outlet temperature was controlled at 175 ± 5 ℃ at 60 minutes, exhaust vacuum after; Reinforced once more, add potter's clay and tetrafluoroethylene and A-172, potter's clay and tetrafluoroethylene divide three addings; Add silane coupling agent when reinforced for the second time, add back temperature secondary vacuum pumping in the time of 130-140 ℃, 30 minutes pumpdown times; Vacuum tightness-0.075 ± 0.002, outlet temperature are controlled at 160-170 ℃, pour out sizing material at last and get final product through the filter filtering shaping.
The oil resistant goods that fourth aspect of the present invention provides a kind of resistance oil silicone rubber of the present invention to make.
In an embodiment of the present invention, said goods are O type circle, spark coil, rubber roll or pad.
The 5th aspect of the present invention provides the application of a kind of resistance oil silicone rubber of the present invention at O type circle, spark coil, rubber roll or pad.
Embodiment
The inventor through to the existing silicone gasket transformation of the way, makes it obtain good oil resistant characteristic through extensive and deep research; And find that this resistance oil silicone rubber also has good elasticity; The characteristics that compression set is little, have high temperature resistant, and the low advantage of cost.Accomplished the present invention on this basis.
Below detail to various aspects of the present invention:
Specify like nothing, various raw materials of the present invention all can obtain through commercially available; Or prepare according to the ordinary method of this area.Only if definition or explanation are arranged in addition, the same meaning that all specialties used herein and scientific words and those skilled in the art are familiar with.Any in addition with the institute similar content of putting down in writing or the equalization method and material all can be applicable in the inventive method.
Others of the present invention are because the disclosure of this paper is conspicuous to those skilled in the art.
The resistance oil silicone rubber compsn
In first aspect of the present invention, a kind of resistance oil silicone rubber compsn is provided, said compsn comprises following parts by weight:
(a) methyl vinyl silicon kautschuk; 29 ± 2 parts of the methyl vinyl silicon kautschuks and the number-average molecular weight of the two that comprise 71 ± 2 parts of contents of ethylene 0.07%-0.09% methyl vinyl silicon kautschuks, contents of ethylene 0.15-0.17% are between 58-62 ten thousand
(b) hydroxy silicon oil is 2.2 ± 0.5 parts,
(c) containing hydrogen silicone oil is 1.4 ± 0.2 parts, and
(d) oil resistant component, said oil resistant component comprises:
42 ± 10 parts of WHITE CARBON BLACKs, said WHITE CARBON BLACK are precipitated silica;
1.1 ± 0.2 parts of dimethyl silicone oils, the polymerization degree of said dimethyl silicone oil are between the 150-300;
9 ± 2 parts in 3000 ± 500 purpose potter's clay,
5 ± 0.5 parts of tetrafluoroethylene,
The 90-100% that the weight of component (a)～(d) accounts for said composition total weight calculates with composition total weight.
The contriver finds; Oil resistant composition of the present invention adopts the cooperation of potter's clay, tetrafluoroethylene, precipitated silica, methyl-silicone oil; Particularly adopted lower-cost potter's clay as filler, cost has had very big improvement, and the while has also been obtained good oil resistant effect.
(a) methyl vinyl silicon kautschuk
(English name: Silicone rubber) divide heat vulcanization type (high temperature vulcanized silica gel HTV), room temperature vulcanized (RTV), wherein room temperature vulcanized is divided polycondensation reaction type and addition reaction-type again to Zylox.High temperature silicon rubber is mainly used in makes various silastic products, and room temperature Zylox then mainly is to use as caking agent, Embedding Material or mould.The heat vulcanization type consumption is maximum; Heat vulcanization type divides methyl silicone rubber (MQ), methyl vinyl silicon kautschuk (VMQ again; Consumption and product grade are maximum), methyl ethylene phenyl siloxane rubber PVMQ (low temperature resistant, radiation hardness), other also have nitrile silicone rubber, trifluoropropyl siloxane etc.
In order to reach oil-proofness of the present invention; The present invention has adopted the combination of methyl vinyl silicon kautschuk, and it 29 ± 2 parts of methyl vinyl silicon kautschuks and number-average molecular weight of the two that comprises 71 ± 2 parts of contents of ethylene 0.07%-0.09% methyl vinyl silicon kautschuks, contents of ethylene 0.15-0.17% is between 58-62 ten thousand.
Said contents of ethylene is a weight content.
(b) hydroxy silicon oil
Described hydroxy silicon oil can be the form of cationic or non-ionic type, and available following general formula is represented:
R is an alkyl in the formula, is preferably methyl or ethyl; R ' is alkyl or hydroxyl, is preferably methyl, ethyl or hydroxyl.Polymerization degree n is between 150-300.
In an embodiment of the present invention, said hydroxy silicon oil is selected from low polymerization degree α, the alpha, omega-dihydroxy polymethyl siloxane.
In an embodiment, said low polymerization degree α, the polymerization degree of alpha, omega-dihydroxy polymethyl siloxane is between 150-300.
(c) containing hydrogen silicone oil
The present invention contains 1.4 ± 0.2 parts of (c) containing hydrogen silicone oils.
Containing hydrogen silicone oil of the present invention has the conventional sense of this area, its not concrete restriction, only otherwise goal of the invention of the present invention is produced restriction to get final product.
(d) oil resistant component
WHITE CARBON BLACK of the present invention is a precipitated silica.And adopt the oil resistant effect of the WHITE CARBON BLACK of other kinds to be not so good as described precipitated silica.
1.1 ± 0.2 parts of dimethyl silicone oils of the present invention, the polymerization degree of said dimethyl silicone oil are between the 150-300.
The present invention adopts 9 ± 2 parts in 3000 ± 500 purpose potter's clay.The present invention adopts potter's clay as the oil resistant component, improve more than the oil resistant effect that adopts zeyssatite (or similar other components), and cost significantly reduces.
The present invention also adopts 5 ± 0.5 parts of tetrafluoroethylene.
Other components
The weight of said component (a)～(d) accounts for 90～100% of said composition total weight, calculates with composition total weight.
Said compsn also can contain the conventional additive in this area, and this it is known to those skilled in the art that.
In an embodiment of the present invention, said compsn also contains additive, and said additive comprises:
0.2 ± 0.05 part of inner pattern releasing agent applicable,
2 ± 0.5 parts of silane coupling agents,
0.22 ± 0.02 part of inner pattern releasing agent applicable.
In an embodiment of the present invention, said inner pattern releasing agent applicable for example is stearic acid, most preferably Zinic stearas.
Optimum embodiment
In an embodiment, use methyl vinyl silicon kautschuk, its contents of ethylene 0.07%-0.09%71 part, 0.15-0.17%29 part, molecular weight are at 58-62 ten thousand; Low polymerization degree α, 2.2 parts of alpha, omega-dihydroxy polymethyl siloxanes (hydroxy silicon oil), 1.4 parts of containing hydrogen silicone oils; The polymerization degree is 1.1 parts of the dimethyl silicone oils of 150-300,0.2 part of inner pattern releasing agent applicable, 42 parts of precipitated silicas; 9 parts in 3000 order potter's clay, 2 parts of silane coupling agents, 5 parts of tetrafluoroethylene; 1.2 parts of inner pattern releasing agent applicables, its oil resistant composition is mainly at potter's clay, tetrafluoroethylene, precipitated silica, methyl-silicone oil.
The resistance oil silicone rubber that second aspect of the present invention provides a kind of compsn of the present invention to make.
In an embodiment of the present invention, according to its oil resistance of GB/Tl690-2006 standard test, its volume change is not higher than 36%.
The third aspect of the invention provides a kind of preparation method of resistance oil silicone rubber of the present invention, and it comprises the steps:
Component of the present invention is provided;
Said component is mediated at 110-175 ℃, vacuumizes aftershaping and obtains resistance oil silicone rubber.
Preferably, said component is mediated at 110-120 ℃.
In an embodiment of the present invention, said component repeatedly feeding mode is fed in raw material.
In an embodiment, rubber 0.08%, 0.16% is put into kneader, WHITE CARBON BLACK is added general 3-4 time in batches; Each add WHITE CARBON BLACK next time after agglomerating, when adding WHITE CARBON BLACK for the second time, begin to add hydroxy silicon oil, the last containing hydrogen silicone oil, dimethyl silicone oil of adding when agglomerating; Mediate built-in temperature at last about 110-120 ℃, sizing material becomes agglomerate, begins to vacuumize, and vacuum tightness is-0.075 ± 0.002; Pumpdown time, outlet temperature was controlled at 175 ± 5 ℃ at 60 minutes, exhaust vacuum after; Reinforced once more, add potter's clay and tetrafluoroethylene and A-172, potter's clay and tetrafluoroethylene divide three addings; Add silane coupling agent when reinforced for the second time, add back temperature secondary vacuum pumping in the time of 130-140 ℃, 30 minutes pumpdown times; Vacuum tightness-0.075 ± 0.002, outlet temperature are controlled at 160-170 ℃, pour out sizing material at last and get final product through the filter filtering shaping.
The oil resistant goods that fourth aspect of the present invention provides a kind of resistance oil silicone rubber of the present invention to make.
In an embodiment of the present invention, said goods are O type circle, spark coil, rubber roll or pad.
The 5th aspect of the present invention provides the application of a kind of resistance oil silicone rubber of the present invention at O type circle, spark coil, rubber roll or pad.
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in the restriction scope of the present invention.The experimental technique of unreceipted actual conditions in the following example is measured according to national standard usually.If there is not a corresponding national standards, then carry out according to general international standard, normal condition or according to the condition that manufacturer advises.Unless otherwise indicated, otherwise all umbers are weight part, and all per-cents are weight percentage, and described polymericular weight is a number-average molecular weight.
Only if definition or explanation are arranged in addition, the same meaning that all specialties used herein and scientific words and those skilled in the art are familiar with.Any in addition with the institute similar content of putting down in writing or the equalization method and material all can be applicable in the inventive method.
Embodiment 1
Summary of the invention: proportioning and raw material through to silica gel improve prescription as follows:
With 0.08%71 part of methyl ethylene rubber, 0.16%29 part, molecular weight at 58-62 ten thousand, 2.2 parts of hydroxy silicon oils, 1.4 parts of containing hydrogen silicone oils; 1.1 parts of methyl-silicone oils; 0.42 part of Zinic stearas, 42 parts of Degussa 928 WHITE CARBON BLACKs, 29 parts in 3000 order potter's clay; 9 parts of tetrafluoroethylene, silane coupling A-1721.2 part.
The technology of its glue is following:
Rubber 0.08%, 0.16% is put into kneader, WHITE CARBON BLACK is added general 3-4 time in batches, each add WHITE CARBON BLACK next time after agglomerating; When for the second time adding WHITE CARBON BLACK, begin to add hydroxy silicon oil, add containing hydrogen silicone oil when agglomerating at last, methyl-silicone oil is mediated built-in temperature at last about 110-120 ℃; Sizing material becomes agglomerate, begins to vacuumize, and vacuum tightness is-0.075 ± 0.002, and the pumpdown time was at 60 minutes; Outlet temperature is controlled at 175 ± 5 ℃, exhaust vacuum after, reinforced once more, add potter's clay and tetrafluoroethylene and A-172; Potter's clay and tetrafluoroethylene divide three addings, add A-172 when reinforced for the second time, add back temperature secondary vacuum pumping in the time of 130-140 ℃, 30 minutes pumpdown times; Vacuum tightness-0.075 ± 0.002, outlet temperature are controlled at 160-170 ℃, pour out sizing material at last and get final product through the filter filtering shaping.
The physicals of this glue is following:
Invention effect summary: the present invention has reached good oil resistant effect, and the client also has fine utilization, compares with present Zylox, and it has oil resistant effect and heatproof effect preferably, and has good rebound resilience and complete processing.，
Embodiment 2
Summary of the invention: proportioning and raw material through to silica gel improve prescription as follows:
With 0.07%71 part of methyl ethylene rubber, 0.15%29 part, molecular weight at 58-62 ten thousand, 2.2 parts of hydroxy silicon oils, 1.4 parts of containing hydrogen silicone oils; 1.1 parts of methyl-silicone oils, 42 parts of precipitated silicas, 29 parts in 3000 order potter's clay; 9 parts of tetrafluoroethylene, silane coupling A-1721.2 part.
The technology of its glue is following:
Rubber 0.08%, 0.16% is put into kneader, WHITE CARBON BLACK is added general 3-4 time in batches, each add WHITE CARBON BLACK next time after agglomerating; When for the second time adding WHITE CARBON BLACK, begin to add hydroxy silicon oil, add containing hydrogen silicone oil when agglomerating at last, methyl-silicone oil is mediated built-in temperature at last about 110-120 ℃; Sizing material becomes agglomerate, begins to vacuumize, and vacuum tightness is-0.075 ± 0.002, and the pumpdown time was at 60 minutes; Outlet temperature is controlled at 175 ± 5 ℃, exhaust vacuum after, reinforced once more, add potter's clay and tetrafluoroethylene and A-172; Potter's clay and tetrafluoroethylene divide three addings, add A-172 when reinforced for the second time, add back temperature secondary vacuum pumping in the time of 130-140 ℃, 30 minutes pumpdown times; Vacuum tightness-0.075 ± 0.002, outlet temperature are controlled at 160-170 ℃, pour out sizing material at last and get final product through the filter filtering shaping.
It is following to survey this physicals:
Conclusion:
The rubber contents of ethylene is adjusted to up and down 0.01%, remove releasing agent, the oil-proofness of surveying glue not have variation basically, but conventional rerum natura hardness step-down.
Embodiment 3
Summary of the invention: proportioning and raw material through to silica gel improve prescription as follows:
With 0.08%71 part of methyl ethylene rubber, 0.16%29 part, molecular weight at 58-62 ten thousand, 2.5 parts of hydroxy silicon oils, 1.4 parts of containing hydrogen silicone oils; 1.1 parts of methyl-silicone oils, 0.42 part of Zinic stearas, 50 parts of precipitated silicas; 29 parts in 3000 order potter's clay, 9 parts of tetrafluoroethylene, A-1721.2 part.
The technology of its glue is following:
Rubber 0.08%, 0.16% is put into kneader, WHITE CARBON BLACK is added general 3-4 time in batches, each add WHITE CARBON BLACK next time after agglomerating; When for the second time adding WHITE CARBON BLACK, begin to add hydroxy silicon oil, the last containing hydrogen silicone oil, 0.42 part of Zinic stearas, methyl-silicone oil of adding when agglomerating; Mediate built-in temperature at last about 110-120 ℃, sizing material becomes agglomerate, begins to vacuumize, and vacuum tightness is-0.075 ± 0.002; Pumpdown time, outlet temperature was controlled at 175 ± 5 ℃ at 60 minutes, exhaust vacuum after; Reinforced once more, add potter's clay and tetrafluoroethylene and A-172, potter's clay and tetrafluoroethylene divide three addings; Add A-172 when reinforced for the second time, add back temperature secondary vacuum pumping in the time of 130-140 ℃, 30 minutes pumpdown times; Vacuum tightness-0.075 ± 0.002, outlet temperature are controlled at 160-170 ℃, pour out sizing material at last and get final product through the filter filtering shaping.
It is following to survey this physicals:
Conclusion:
WHITE CARBON BLACK content is increased, and the oil-proofness of surveying glue does not have to change basically, and conventional rerum natura hardness uprises, and can satisfy the requirement of client to hardness.
Comparative Examples 1～3
Comparative Examples 1
(with rubber master part) 0.07%-0.09%60 part, 0.15-0.17%40 part, molecular weight be at 58-62 ten thousand, low polymerization degree α, 2.2 parts of alpha, omega-dihydroxy polymethyl siloxanes (hydroxy silicon oil); 1.4 parts of containing hydrogen silicone oils, the polymerization degree are 1.1 parts of the dimethyl silicone oils of 150-300,0.42 part of inner pattern releasing agent applicable; 42 parts of precipitated silicas, 29 parts in 3000 order potter's clay, 1.2 parts of silane coupling agents; 9 parts of tetrafluoroethylene, it is following to record physicals:
Comparative Examples 2
Adjust diatomaceous ratio
Other constant (with respect to Comparative Examples 1), it is following to replace potter's clay to record the Main physical performance zeyssatite or other silicate: volume change %4.6 behind 150 ℃ of * 72h of its standard oil of anti-NO.1, behind 150 ℃ of * 72h of the standard oil of anti-NO.3, volume change %48.
Comparative Examples 3
The ratio of adjustment dimethyl silicone oil
Other component all constant (with respect to Comparative Examples 1) is removed dimethyl silicone oil, and it is following to record the Main physical performance: volume change %4.6 behind 150 ℃ of * 72h of its standard oil of anti-NO.1, and behind 150 ℃ of * 72h of the standard oil of anti-NO.3, volume change %39.
The above is merely preferred embodiment of the present invention; Be not in order to limit essence technology contents scope of the present invention; Essence technology contents of the present invention is broadly to be defined in the claim scope of application, and if any technological entity or method that other people accomplish are defined identical with the claim scope of application; Also or a kind of change of equivalence, all will be regarded as and be covered by among this claim scope.
All documents in that the present invention mentions are all quoted as a reference in this application, are just quoted such as a reference separately as each piece document.Should be understood that in addition that after having read foregoing of the present invention those skilled in the art can do various changes or modification to the present invention, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Claims (10)
1. a resistance oil silicone rubber compsn is characterized in that, said compsn comprises following parts by weight:
(a) methyl vinyl silicon kautschuk; 29 ± 2 parts of the methyl vinyl silicon kautschuks and the number-average molecular weight of the two that comprise 71 ± 2 parts of contents of ethylene 0.07%-0.09% methyl vinyl silicon kautschuks, contents of ethylene 0.15-0.17% are between 58-62 ten thousand
(b) hydroxy silicon oil is 2.2 ± 0.5 parts,
(c) containing hydrogen silicone oil is 1.4 ± 0.2 parts, and
(d) oil resistant component, said oil resistant component comprises:
42 ± 10 parts of WHITE CARBON BLACKs, said WHITE CARBON BLACK are precipitated silica;
1.1 ± 0.2 parts of dimethyl silicone oils, the polymerization degree of said dimethyl silicone oil are between the 150-300;
9 ± 2 parts in 3000 ± 500 purpose potter's clay,
5 ± 0.5 parts of tetrafluoroethylene,
The 90-100% that the weight of component (a)～(d) accounts for said composition total weight calculates with composition total weight.
2. compsn as claimed in claim 1 is characterized in that said hydroxy silicon oil is selected from low polymerization degree α, the alpha, omega-dihydroxy polymethyl siloxane.
3. compsn as claimed in claim 1 is characterized in that said compsn also contains additive, and said additive comprises:
0.2 ± 0.05 part of inner pattern releasing agent applicable,
2 ± 0.5 parts of silane coupling agents,
0.22 ± 0.02 part of inner pattern releasing agent applicable.
4. resistance oil silicone rubber that compsn as claimed in claim 1 makes.
5. resistance oil silicone rubber as claimed in claim 4 is characterized in that, according to its oil resistance of GB/T1690-2006 standard test, its volume change is not higher than 36%.
6. the preparation method of a resistance oil silicone rubber as claimed in claim 1 is characterized in that, comprises the steps:
Component as claimed in claim 1 is provided;
Said component is mediated at 110-175 ℃, vacuumizes aftershaping and obtains resistance oil silicone rubber.
7. method as claimed in claim 6 is characterized in that said component repeatedly feeding mode is fed in raw material.
8. oil resistant goods that resistance oil silicone rubber as claimed in claim 4 makes.
9. oil resistant goods as claimed in claim 8 is characterized in that, said goods are O type circle, spark coil, rubber roll or pad.
10. a resistance oil silicone rubber as claimed in claim 4 is in the application of O type circle, spark coil, rubber roll or pad.
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| CN103265670A (en) * | 2013-05-11 | 2013-08-28 | 北京化工大学 | Oil-resistant silicon rubber and preparation method thereof by in-situ reaction |
| CN103319897A (en) * | 2013-06-06 | 2013-09-25 | 常熟市江南粘合剂有限公司 | Oil-resistant silicone sealant production process |
| CN103468001A (en) * | 2013-09-16 | 2013-12-25 | 上海旭创高分子材料有限公司 | Silicon rubber available for extruding automobile hose |
| CN103509217A (en) * | 2013-09-05 | 2014-01-15 | 安徽省科林电子有限公司 | High-resilience transformer sealing gasket and preparation method thereof |
| CN103665887A (en) * | 2013-11-29 | 2014-03-26 | 山东永泰化工有限公司 | Method for preparing oil-proof high-temperature-resistant silicone rubber |
| CN103665889A (en) * | 2013-11-29 | 2014-03-26 | 山东永泰化工有限公司 | High-temperature resistant rubber |
| CN104004361A (en) * | 2014-05-07 | 2014-08-27 | 天长市荣盛有机硅科技有限公司 | High-performance methyl vinyl silicone rubber material |
| CN104004360A (en) * | 2014-05-07 | 2014-08-27 | 天长市荣盛有机硅科技有限公司 | High-strength tear-resistant methyl vinyl silicone rubber material |
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| CN110483996A (en) * | 2019-06-16 | 2019-11-22 | 江门市蓬江区荷塘伟润橡胶有限公司 | A kind of silicone rubber O-ring sizing material and preparation method for wall-breaking machine main shaft seal |
| CN111363279A (en) * | 2020-03-17 | 2020-07-03 | 戚佳轩 | Fluororubber composition capable of being co-vulcanized and bonded with silicone rubber, rubber product and preparation method |
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| CN104479360A (en) * | 2014-10-30 | 2015-04-01 | 田琳琳 | High-performance organic silica gel |
| CN104725876A (en) * | 2014-12-17 | 2015-06-24 | 苏州锦腾电子科技有限公司 | Oil-resistant and high-temperature-resistant room temperature vulcanized silicone rubber and preparation method thereof |
| CN104559202A (en) * | 2015-01-21 | 2015-04-29 | 宜昌兴之新塑胶电子科技有限公司 | Preparation method of high-tear-resistance silicon compounded rubber |
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| CN105419341A (en) * | 2015-12-15 | 2016-03-23 | 江苏天辰新材料股份有限公司 | Low-compression permanent set silicone rubber as well as preparation method and use method thereof |
| CN105419341B (en) * | 2015-12-15 | 2018-04-10 | 江苏天辰新材料股份有限公司 | A kind of low compression set silicon rubber and preparation method thereof and application method |
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| CN110055857A (en) * | 2019-05-10 | 2019-07-26 | 广东中星体育设施有限公司 | A kind of novel environment friendly plastic cement runway preparation method |
| CN110172251A (en) * | 2019-06-11 | 2019-08-27 | 东莞市南炬高分子材料有限公司 | A kind of resistance oil silicone rubber and preparation method thereof |
| CN110483996A (en) * | 2019-06-16 | 2019-11-22 | 江门市蓬江区荷塘伟润橡胶有限公司 | A kind of silicone rubber O-ring sizing material and preparation method for wall-breaking machine main shaft seal |
| CN110423472A (en) * | 2019-08-22 | 2019-11-08 | 新安天玉有机硅有限公司 | A kind of anti-pollution type silicon rubber and preparation method thereof |
| CN111363279A (en) * | 2020-03-17 | 2020-07-03 | 戚佳轩 | Fluororubber composition capable of being co-vulcanized and bonded with silicone rubber, rubber product and preparation method |
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