CN107286671A - A kind of hydrophobic enhanced heat vulcanized silicone rubber and preparation method thereof - Google Patents
A kind of hydrophobic enhanced heat vulcanized silicone rubber and preparation method thereof Download PDFInfo
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Abstract
The present invention provides a kind of hydrophobic enhanced heat vulcanized silicone rubber and preparation method thereof, and the specific preparation method of the silicon rubber is：Tetramethyl divinyl disiloxane is added to the mixed solution of concentrated hydrochloric acid, deionized water and ethanol, mechanical agitation, tetraethyl orthosilicate is added dropwise, hydrolytic condensation adds toluene extracting and demixing, obtain methyl vinyl silicone, crosslinked polyethylene particle is added in methyl vinyl silicone, after stirring, in molding vulcanization, vacuum heat, obtains the methyl vinyl silicone of polyethylene particle crosslinking；Nano imvite, amorphous alumina and titanium dioxide are added into polydimethylsiloxane prepolymer body to mix, crosslinking curing obtains coating the supporting material of organic silicon rubber；After the methyl vinyl silicone that polyethylene particle is crosslinked, the supporting material for coating organic silicon rubber, 24 two six benzoyl peroxides, diphenyl silanediol and octamethylcy-clotetrasiloxane are well mixed, begun to pratise after standing, post-cure obtains hydrophobic enhanced heat vulcanized silicone rubber.
Description
Technical field
The invention belongs to silastic material technical field, and in particular to a kind of hydrophobic enhanced heat vulcanized silicone rubber and its
Preparation method.
Background technology
Silicon rubber is that a kind of strand has inorganic and organic nature macromolecular material concurrently, room temperature vulcanized silicone rubber
Chemical constitution is hydroxyl-terminated injecting two methyl siloxane, and the siloxane molecule is soft, and easily rotation is curled into helical structure, silicon rubber with
Common rubber, which is compared, has higher heat resistance, and the major key of silicon rubber is connected with alternate Si-O chains, due to Si-O keys
Bond energy it is more much bigger than the bond energy of C-C keys, therefore with excellent resistant of high or low temperature, relatively low glass transition temperature, stronger anti-
Nitroglycerine transfer ability, resistance to ozone and weatherability, excellent electrical insulating property, special physiological inertia etc., it is widely used in boat
My god, in terms of chemical industry, agricultural and health care, as the important and essential high polymer material of national economy.But silicon rubber
There is certain deficiency in terms of mechanical strength, oil resistant, solvent resistant, acidproof, alkaline-resisting and resistance to steam in glue.
The research in terms of silicon rubber modification is increasingly valued by people currently with nano material, through different nanometers
The silicon rubber of material modification all has in aspect of performance to improve significantly.A kind of carbon disclosed in Chinese patent CN 101659790B
The preparation method of alclad composite Nano filler thermally conductive silicone rubber composite material, by carbon alclad nano-particle through silane coupler modified
It is added to after processing in raw-silastic continuously, after being well mixed, product is obtained after sulfidization molding, it is nanometer particle-modified through carbon alclad
The heat conductivility of silicon rubber is significantly improved.A kind of heat cure containing nano imvite disclosed in Chinese patent CN100436542C
Type silicon rubber and preparation method thereof, it is former using diisocyanate and liquid silastic by montmorillonite with after silane coupler modified
Position intercalation technique obtains nano imvite, then nano imvite is added in heat vulcanized silicone rubber elastomeric compound, anti-refining vulcanization
The nano imvite mechanical property for obtaining adding in the heat vulcanized silicone rubber containing nano imvite, heat vulcanized silicone rubber is excellent
Different, 300% stress at definite elongation improves 140%, and tensile strength improves 20%, and elongation at break improves 3%.In addition, silicon rubber may be used also
To improve the heat endurance of silicon rubber by adding the nano materials such as nanometer hydroxyapatite, nano Au particle, CNT, resist
Bacterium property and optical activity etc..But the modification for being currently based on silicon rubber is simple addition mixing mostly, and nano material can only be right
The single performance of silicon rubber is modified, and dispersed in the heat vulcanized silicone rubber of solid-state is also problem, therefore
Modification of the nano material to silicon rubber stills need further research and perfect.
The content of the invention
The technical problem to be solved in the present invention is to provide hydrophobic enhanced heat vulcanized silicone rubber of one kind and preparation method thereof,
By after methyl vinyl silicone crosslinked polyethylene particle with coat the nano imvite of organic silicon rubber, amorphous alumina and
Titanium dioxide supporting material, the benzoyl peroxides of 2-4 bis- or six, diphenyl silanediol and octamethylcy-clotetrasiloxane mixing, through standing
Begin to pratise and obtain hydrophobic enhanced heat vulcanized silicone rubber with post-cure.The mechanical performance of silicon rubber prepared by the present invention improves,
And with antifouling work function.
In order to solve the above technical problems, the technical scheme is that：
A kind of hydrophobic enhanced heat vulcanized silicone rubber, the hydrophobic enhanced heat vulcanized silicone rubber includes polyethylene
The methyl vinyl silicone of grain crosslinking, supporting material, the benzoyl peroxides of 2-4 bis- or six, the diphenyl silicon for coating organic silicon rubber
Glycol and octamethylcy-clotetrasiloxane, the supporting material of the cladding organic silicon rubber cover de- for the nanometer of cladding organic silicon rubber
Soil, amorphous alumina and titanium dioxide.
As the preferred of above-mentioned technical proposal, the methyl vinyl silicone of the polyethylene particle crosslinking is by ethylene methacrylic
Base silicones with crosslinked polyethylene particle is cross-linking vulcanized prepares.
The present invention also provides a kind of preparation method of hydrophobic enhanced heat vulcanized silicone rubber, comprises the following steps：
(1) tetramethyl divinyl disiloxane is added to the mixed solution of concentrated hydrochloric acid, deionized water and ethanol, machinery is stirred
Mix, tetraethyl orthosilicate is added dropwise, hydrolytic condensation adds toluene extracting and demixing, methyl vinyl silicone obtained, by crosslinked polyethylene
Particle drying process 8h in 80 DEG C of vacuum, is added in methyl vinyl silicone, after stirring, at a temperature of 180 DEG C
Molding vulcanization 15min, then the secondary heat treatment 8h in 80 DEG C of vacuum, obtains the methyl ethylene silicon tree of polyethylene particle crosslinking
Fat；
(2) nano imvite, amorphous alumina and titanium dioxide are added into polydimethylsiloxane prepolymer body to mix,
Hydrogen silicone oil crosslinking agent is added, is stirred, is heating and curing and obtains the supporting material for coating organic silicon rubber；
(3) cladding prepared by methyl vinyl silicone, the step (2) of the polyethylene particle crosslinking prepared step (1)
Supporting material, the benzoyl peroxides of 2-4 bis- or six, diphenyl silanediol and the octamethylcy-clotetrasiloxane of organic silicon rubber are well mixed
Afterwards, begun to pratise after standing, 20min is vulcanized under 170 DEG C and 15MPa, then vulcanize 6h at 200 DEG C, obtain hydrophobic enhanced hot sulphur
Change type silicon rubber.
As the preferred of above-mentioned technical proposal, in the step (1), concentrated hydrochloric acid, deionized water and ethanol in mixed solution
Volume ratio be 1:10-15:20-25.
As the preferred of above-mentioned technical proposal, in the step (1), tetramethyl divinyl disiloxane and mixed solution
Materials ratio with tetraethyl orthosilicate is 7.5-8g:10mL:10-15g.
As the preferred of above-mentioned technical proposal, in the step (1), crosslinked polyethylene particle and methyl vinyl silicone
Mol ratio be 0.5-1:2-5.
As the preferred of above-mentioned technical proposal, in the step (2), nano imvite, amorphous alumina and titanium dioxide
The mol ratio of titanium is 0.5-0.7:1-1.5:1.
As the preferred of above-mentioned technical proposal, in the step (2), silicon rubber in the supporting material of organic silicon rubber is coated
Content be 10-20%.
As the preferred of above-mentioned technical proposal, in the step (2), the temperature being heating and curing is 60-80 DEG C, and the time is 5-
6h。
As the preferred of above-mentioned technical proposal, in the step (3), the methyl ethylene silicon tree of polyethylene particle crosslinking
Fat, supporting material, the benzoyl peroxides of 2-4 bis- or six, diphenyl silanediol and the octamethylcy-clotetrasiloxane for coating organic silicon rubber
Mass ratio be:80-90:4-8:5-12:8-12:10-15.
Compared with prior art, the invention has the advantages that：
(1) main material is the first that polyethylene particle is crosslinked in hydrophobic enhanced heat vulcanized silicone rubber prepared by the present invention
Base vinyl polysiloxane, in the surface-crosslinked vinylic polar group of methyl vinyl silicone, network structure is immersed by vinyl
Silicon rubber molecule chain element between, improve silicones internal bond strength, to improve the mechanical property of silicones.
(2) reinforcing material containing cladding organic silicon rubber in hydrophobic enhanced heat vulcanized silicone rubber prepared by the present invention
Contain nano imvite, amorphous alumina and titanium dioxide in material, supporting material, add a small amount of phyllosilicate montmorillonite
Amorphous alumina and titanium dioxide can be filled between network structure silicon rubber molecule chain element, can improve silicon rubber elastic
Modulus and storage modulus, moreover it is possible to improve fire resistance, barrier property, ageing resistace and heat resistance, and nano imvite, nothing
The aluminum oxide that shapes and titanium dioxide surface cladding organic silicon rubber, are conducive to supporting material at uniform point of heat vulcanized silicone rubber
Dissipate, the problem of improving difficulties in dispersion of the nano material in silicon rubber.
(3) benzoyl peroxides of 2-4 bis- or six, diphenyl silicon two in hydrophobic enhanced heat vulcanized silicone rubber prepared by the present invention
Alcohol and octamethylcy-clotetrasiloxane, they can improve the electric charge on heat vulcanized silicone rubber surface, keep long-term hydrophobic performance, make
Silicon rubber has antifouling work function.
Embodiment
Describe the present invention in detail below in conjunction with specific embodiment, herein illustrative examples and explanation of the invention
For explaining the present invention, but it is not as a limitation of the invention.
Embodiment 1：
Materials ratio according to tetramethyl divinyl disiloxane and mixed solution and tetraethyl orthosilicate is 7.5g:10mL:
10g, it is 1 that tetramethyl divinyl disiloxane is added into volume ratio:10:The mixing of 20 concentrated hydrochloric acid, deionized water and ethanol
Solution, mechanical agitation, fast drop tetraethyl orthosilicate, hydrolytic condensation adds toluene extracting and demixing, obtains methyl ethylene silicon tree
Fat, is 0.5 according to the mol ratio of crosslinked polyethylene particle and methyl vinyl silicone:2, by crosslinked polyethylene particle at 80 DEG C
Drying process 8h in vacuum, is added in methyl vinyl silicone, after stirring, and vulcanization is molded at a temperature of 180 DEG C
15min, then the secondary heat treatment 8h in 80 DEG C of vacuum, obtains the methyl vinyl silicone of polyethylene particle crosslinking.
(2) it is 0.5 by mol ratio:1:1 nano imvite, amorphous alumina and titanium dioxide is added to poly dimethyl
Siloxanes performed polymer is mixed, and is added hydrogen silicone oil crosslinking agent, is stirred, be heating and curing 5-6h at 60 DEG C, is coated with
The supporting material of machine silicon rubber, wherein, the content for coating silicon rubber in the supporting material of organic silicon rubber is 10%.
(3) it is by mass ratio:80:4:5:8:Methyl vinyl silicone, the cladding of 10 polyethylene particle crosslinking are organic
After supporting material, the benzoyl peroxides of 2-4 bis- or six, diphenyl silanediol and the octamethylcy-clotetrasiloxane of silicon rubber are well mixed,
Begun to pratise after standing, 20min is vulcanized under 170 DEG C and 15MPa, then vulcanize 6h at 200 DEG C, obtain hydrophobic enhanced heat vulcanization type
Silicon rubber.
Embodiment 2：
Materials ratio according to tetramethyl divinyl disiloxane and mixed solution and tetraethyl orthosilicate is 8g:10mL:
15g, it is 1 that tetramethyl divinyl disiloxane is added into volume ratio:15:The mixing of 25 concentrated hydrochloric acid, deionized water and ethanol
Solution, mechanical agitation, fast drop tetraethyl orthosilicate, hydrolytic condensation adds toluene extracting and demixing, obtains methyl ethylene silicon tree
Fat, is 1 according to the mol ratio of crosslinked polyethylene particle and methyl vinyl silicone:5, crosslinked polyethylene particle is true at 80 DEG C
Aerial drying process 8h, is added in methyl vinyl silicone, after stirring, and vulcanization is molded at a temperature of 180 DEG C
15min, then the secondary heat treatment 8h in 80 DEG C of vacuum, obtains the methyl vinyl silicone of polyethylene particle crosslinking.
(2) it is 0.7 by mol ratio:1.5:1 nano imvite, amorphous alumina and titanium dioxide is added to poly- diformazan
Radical siloxane performed polymer is mixed, and is added hydrogen silicone oil crosslinking agent, is stirred, be heating and curing 6h at 80 DEG C, is coated with
The supporting material of machine silicon rubber, wherein, the content for coating silicon rubber in the supporting material of organic silicon rubber is 20%.
(3) it is by mass ratio:90:8:12:12:15 polyethylene particle crosslinking methyl vinyl silicone, be coated with
Supporting material, the benzoyl peroxides of 2-4 bis- or six, diphenyl silanediol and the octamethylcy-clotetrasiloxane of machine silicon rubber are well mixed
Afterwards, begun to pratise after standing, 20min is vulcanized under 170 DEG C and 15MPa, then vulcanize 6h at 200 DEG C, obtain hydrophobic enhanced hot sulphur
Change type silicon rubber.
Embodiment 3：
Materials ratio according to tetramethyl divinyl disiloxane and mixed solution and tetraethyl orthosilicate is 7.8g:10mL:
12g, it is 1 that tetramethyl divinyl disiloxane is added into volume ratio:13:The mixing of 21 concentrated hydrochloric acid, deionized water and ethanol
Solution, mechanical agitation, fast drop tetraethyl orthosilicate, hydrolytic condensation adds toluene extracting and demixing, obtains methyl ethylene silicon tree
Fat, is 0.7 according to the mol ratio of crosslinked polyethylene particle and methyl vinyl silicone:3, by crosslinked polyethylene particle at 80 DEG C
Drying process 8h in vacuum, is added in methyl vinyl silicone, after stirring, and vulcanization is molded at a temperature of 180 DEG C
15min, then the secondary heat treatment 8h in 80 DEG C of vacuum, obtains the methyl vinyl silicone of polyethylene particle crosslinking.
(2) it is 0.6 by mol ratio:1.4:1 nano imvite, amorphous alumina and titanium dioxide is added to poly- diformazan
Radical siloxane performed polymer is mixed, and is added hydrogen silicone oil crosslinking agent, is stirred, be heating and curing 5.5h at 70 DEG C, is coated
The supporting material of organic silicon rubber, wherein, the content for coating silicon rubber in the supporting material of organic silicon rubber is 15%.
(3) it is by mass ratio:85:6:7:10:Methyl vinyl silicone, the cladding of 13 polyethylene particle crosslinking are organic
After supporting material, the benzoyl peroxides of 2-4 bis- or six, diphenyl silanediol and the octamethylcy-clotetrasiloxane of silicon rubber are well mixed,
Begun to pratise after standing, 20min is vulcanized under 170 DEG C and 15MPa, then vulcanize 6h at 200 DEG C, obtain hydrophobic enhanced heat vulcanization type
Silicon rubber.
Embodiment 4：
Materials ratio according to tetramethyl divinyl disiloxane and mixed solution and tetraethyl orthosilicate is 8g:10mL:
10g, it is 1 that tetramethyl divinyl disiloxane is added into volume ratio:12:The mixing of 23 concentrated hydrochloric acid, deionized water and ethanol
Solution, mechanical agitation, fast drop tetraethyl orthosilicate, hydrolytic condensation adds toluene extracting and demixing, obtains methyl ethylene silicon tree
Fat, is 1 according to the mol ratio of crosslinked polyethylene particle and methyl vinyl silicone:4, crosslinked polyethylene particle is true at 80 DEG C
Aerial drying process 8h, is added in methyl vinyl silicone, after stirring, and vulcanization is molded at a temperature of 180 DEG C
15min, then the secondary heat treatment 8h in 80 DEG C of vacuum, obtains the methyl vinyl silicone of polyethylene particle crosslinking.
(2) it is 0.6 by mol ratio:1.3:1 nano imvite, amorphous alumina and titanium dioxide is added to poly- diformazan
Radical siloxane performed polymer is mixed, and is added hydrogen silicone oil crosslinking agent, is stirred, be heating and curing 5h at 65 DEG C, is coated with
The supporting material of machine silicon rubber, wherein, the content for coating silicon rubber in the supporting material of organic silicon rubber is 10-20%.
(3) it is 90 by mass ratio:4:12:8:Methyl vinyl silicone, the cladding of 15 polyethylene particle crosslinking are organic
After supporting material, the benzoyl peroxides of 2-4 bis- or six, diphenyl silanediol and the octamethylcy-clotetrasiloxane of silicon rubber are well mixed,
Begun to pratise after standing, 20min is vulcanized under 170 DEG C and 15MPa, then vulcanize 6h at 200 DEG C, obtain hydrophobic enhanced heat vulcanization type
Silicon rubber.
Embodiment 5：
Materials ratio according to tetramethyl divinyl disiloxane and mixed solution and tetraethyl orthosilicate is 7.8g:10mL:
13g, it is 1 that tetramethyl divinyl disiloxane is added into volume ratio:14:The mixing of 20 concentrated hydrochloric acid, deionized water and ethanol
Solution, mechanical agitation, fast drop tetraethyl orthosilicate, hydrolytic condensation adds toluene extracting and demixing, obtains methyl ethylene silicon tree
Fat, is 0.9 according to the mol ratio of crosslinked polyethylene particle and methyl vinyl silicone:3, by crosslinked polyethylene particle at 80 DEG C
Drying process 8h in vacuum, is added in methyl vinyl silicone, after stirring, and vulcanization is molded at a temperature of 180 DEG C
15min, then the secondary heat treatment 8h in 80 DEG C of vacuum, obtains the methyl vinyl silicone of polyethylene particle crosslinking.
(2) it is 0.5 by mol ratio:1:1 nano imvite, amorphous alumina and titanium dioxide is added to poly dimethyl
Siloxanes performed polymer is mixed, and is added hydrogen silicone oil crosslinking agent, is stirred, be heating and curing 5-6h at 60-80 DEG C, is coated
The supporting material of organic silicon rubber, wherein, the content for coating silicon rubber in the supporting material of organic silicon rubber is 10-20%.
(3) it is by mass ratio:80:7:9:11:Methyl vinyl silicone, the cladding of 13 polyethylene particle crosslinking are organic
After supporting material, the benzoyl peroxides of 2-4 bis- or six, diphenyl silanediol and the octamethylcy-clotetrasiloxane of silicon rubber are well mixed,
Begun to pratise after standing, 20min is vulcanized under 170 DEG C and 15MPa, then vulcanize 6h at 200 DEG C, obtain hydrophobic enhanced heat vulcanization type
Silicon rubber.
Embodiment 6：
Materials ratio according to tetramethyl divinyl disiloxane and mixed solution and tetraethyl orthosilicate is 7.9g:10mL:
13g, it is 1 that tetramethyl divinyl disiloxane is added into volume ratio:11:The mixing of 23 concentrated hydrochloric acid, deionized water and ethanol
Solution, mechanical agitation, fast drop tetraethyl orthosilicate, hydrolytic condensation adds toluene extracting and demixing, obtains methyl ethylene silicon tree
Fat, is 0.9 according to the mol ratio of crosslinked polyethylene particle and methyl vinyl silicone:4, by crosslinked polyethylene particle at 80 DEG C
Drying process 8h in vacuum, is added in methyl vinyl silicone, after stirring, and vulcanization is molded at a temperature of 180 DEG C
15min, then the secondary heat treatment 8h in 80 DEG C of vacuum, obtains the methyl vinyl silicone of polyethylene particle crosslinking.
(2) it is 0.7 by mol ratio:1.3:1 nano imvite, amorphous alumina and titanium dioxide is added to poly- diformazan
Radical siloxane performed polymer is mixed, and is added hydrogen silicone oil crosslinking agent, is stirred, be heating and curing 6h at 75 DEG C, is coated with
The supporting material of machine silicon rubber, wherein, the content for coating silicon rubber in the supporting material of organic silicon rubber is 17%.
(3) it is by mass ratio:85:7:10:9:Methyl vinyl silicone, the cladding of 11 polyethylene particle crosslinking are organic
After supporting material, the benzoyl peroxides of 2-4 bis- or six, diphenyl silanediol and the octamethylcy-clotetrasiloxane of silicon rubber are well mixed,
Begun to pratise after standing, 20min is vulcanized under 170 DEG C and 15MPa, then vulcanize 6h at 200 DEG C, obtain hydrophobic enhanced heat vulcanization type
Silicon rubber.
After testing, the hydrophobic enhanced heat vulcanized silicone rubber and the heat vulcanization type of prior art that prepared by embodiment 1-6
The result of silicon rubber is as follows：
As seen from the above table, the mechanical performance of hydrophobic enhanced heat vulcanized silicone rubber prepared by the present invention is significantly improved, resistance to
Ageing properties are also improved, and with hydrophobic and fire resistance.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (10)
1. a kind of hydrophobic enhanced heat vulcanized silicone rubber, it is characterised in that：The hydrophobic enhanced heat vulcanized silicone rubber bag
Methyl vinyl silicone, the supporting material for coating organic silicon rubber, the peroxide benzene first of 2-4 bis- or six for including polyethylene particle crosslinking
Acyl, diphenyl silanediol and octamethylcy-clotetrasiloxane, the supporting material of the cladding organic silicon rubber is cladding organosilicon rubber
Nano imvite, amorphous alumina and the titanium dioxide of glue.
2. the hydrophobic enhanced heat vulcanized silicone rubber of one kind according to claim 1, it is characterised in that：The polyethylene
The methyl vinyl silicone of grain crosslinking by methyl vinyl silicone with crosslinked polyethylene particle is cross-linking vulcanized prepares.
3. a kind of preparation method of hydrophobic enhanced heat vulcanized silicone rubber, it is characterised in that comprise the following steps：
(1) by the mixed solution of tetramethyl divinyl disiloxane addition concentrated hydrochloric acid, deionized water and ethanol, mechanical agitation,
Tetraethyl orthosilicate is added dropwise, hydrolytic condensation adds toluene extracting and demixing, methyl vinyl silicone obtained, by crosslinked polyethylene
Grain drying process 8h in 80 DEG C of vacuum, is added in methyl vinyl silicone, after stirring, the mould at a temperature of 180 DEG C
Pressure vulcanization 15min, then the secondary heat treatment 8h in 80 DEG C of vacuum, obtains the methyl ethylene silicon tree of polyethylene particle crosslinking
Fat；
(2) nano imvite, amorphous alumina and titanium dioxide are added into polydimethylsiloxane prepolymer body to mix, then added
Enter hydrogen silicone oil crosslinking agent, stir, be heating and curing and obtain the supporting material for coating organic silicon rubber；
(3) cladding prepared by methyl vinyl silicone, the step (2) of the polyethylene particle crosslinking prepared step (1) is organic
After supporting material, the benzoyl peroxides of 2-4 bis- or six, diphenyl silanediol and the octamethylcy-clotetrasiloxane of silicon rubber are well mixed,
Begun to pratise after standing, 20min is vulcanized under 170 DEG C and 15MPa, then vulcanize 6h at 200 DEG C, obtain hydrophobic enhanced heat vulcanization type
Silicon rubber.
4. a kind of preparation method of hydrophobic enhanced heat vulcanized silicone rubber according to claim 3, it is characterised in that：Institute
State in step (1), the volume ratio of concentrated hydrochloric acid, deionized water and ethanol is 1 in mixed solution:10-15:20-25.
5. a kind of preparation method of hydrophobic enhanced heat vulcanized silicone rubber according to claim 3, it is characterised in that：Institute
State in step (1), the materials ratio of tetramethyl divinyl disiloxane and mixed solution and tetraethyl orthosilicate is 7.5-8g:
10mL:10-15g。
6. a kind of preparation method of hydrophobic enhanced heat vulcanized silicone rubber according to claim 3, it is characterised in that：Institute
State in step (1), the mol ratio of crosslinked polyethylene particle and methyl vinyl silicone is 0.5-1:2-5.
7. a kind of preparation method of hydrophobic enhanced heat vulcanized silicone rubber according to claim 3, it is characterised in that：Institute
State in step (2), the mol ratio of nano imvite, amorphous alumina and titanium dioxide is 0.5-0.7:1-1.5:1.
8. a kind of preparation method of hydrophobic enhanced heat vulcanized silicone rubber according to claim 3, it is characterised in that：Institute
State in step (2), the content for coating silicon rubber in the supporting material of organic silicon rubber is 10-20%.
9. a kind of preparation method of hydrophobic enhanced heat vulcanized silicone rubber according to claim 3, it is characterised in that：Institute
State in step (2), the temperature being heating and curing is 60-80 DEG C, and the time is 5-6h.
10. a kind of preparation method of hydrophobic enhanced heat vulcanized silicone rubber according to claim 3, it is characterised in that：
In the step (3), the methyl vinyl silicone of polyethylene particle crosslinking, supporting material, the 2-4 bis- for coating organic silicon rubber
The mass ratio of six benzoyl peroxides, diphenyl silanediol and octamethylcy-clotetrasiloxane is:80-90:4-8:5-12:8-12:10-
15。
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