CN108546410A - A kind of high-temperature resistant single-component RTV fluorocarbon silicone rubber - Google Patents
A kind of high-temperature resistant single-component RTV fluorocarbon silicone rubber Download PDFInfo
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- CN108546410A CN108546410A CN201810278377.1A CN201810278377A CN108546410A CN 108546410 A CN108546410 A CN 108546410A CN 201810278377 A CN201810278377 A CN 201810278377A CN 108546410 A CN108546410 A CN 108546410A
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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
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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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
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
- C08L83/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
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- 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
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- 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
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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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
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The invention discloses a kind of high-temperature resistant single-component RTV fluorocarbon silicone rubbers, and in terms of parts by weight, which includes：100 parts of hydroxy-end capped polymethyl siloxane；5 ~ 100 parts of hydroxy-end capped liquid fluorosilicone rubber；2 ~ 15 parts of sial high temperature resistant additive；30 ~ 100 parts of aluminium oxide；3 ~ 15 parts of phenyl tributanoximo silane；Silane has online 1 ~ 5 part；0.01 ~ 0.5 part of catalyst.Heat resistance greatly improves compared with existing RTV fluorocarbon silicone rubber, and fluorine silicone rubber aging 7 days under conditions of 350 DEG C, mechanical performance is without significant change.
Description
Technical field
The invention belongs to polymeric material fields, and in particular to a kind of high temperature resistant condensation single-component room-temperature vulcanized fluorine of de-oxime type
Silicon rubber.
Background technology
Organic fluorinated silicone rubber be it is a kind of collection silicon rubber, fluorubber advantage novel elastomer.Siliceous high molecular material has
The features such as high-low temperature resistant, resistance to ag(e)ing and self-extinguishment, and fluorine element electronegativity is strong, the C-F keys being connected to carbon atom quite it is steady
Fixed, heat resistance is also higher, and fluorine element is introduced into siloxanes, can keep the superior heat resistance of polysiloxanes, weather-proof
On the basis of property, hydrophobicity and release property, it is further introduced into the performances such as waterproof, oil resistant and the solvent resistance of fluorochemical.It can be wide
It is general to apply in the essential industries such as automobile, aircraft, aerospace, petrochemical industry, machinery, artificial organs department and field.As national defence and
Indispensable novel high polymer material in national economy.
Currently, the fluorine silicone rubber product used in industry can be used for a long time within the scope of -60 DEG C ~ 250 DEG C, if more than this temperature
Range is spent, properties of product will be decayed.It is typically employed in the method that heat-resisting additive is added in rubber and improves the heat-resisting of rubber
Performance.It is a variety of by adding heat stabilizer in view of organic fluorinated silicone rubber and organic silicon rubber structure and characteristic have similitude
Or the method that the method for heat-resistant filler promotes organic silicon rubber heat resistance is equally applicable to organic fluorinated silicone rubber.Chinese patent
CN1912005A, which is prepared using rare earth derivative as heat-resisting additive, takes off acetone room temperature vulcanized silicone rubber, and this method is equally applicable
Heat resistance is promoted in fluorine silicone rubber, but mechanical performance is relatively low after aging under the conditions of 300 DEG C for this method, is unable to meet demand.In
State invention CN101570680A prepares dealcoholized type room temperature vulcanized silicone rubber, this method application using the heat-resisting effect of titanium dioxide
In fluorine silicone rubber system, mechanical performance declines comparatively fast glue sample after aging under the conditions of 300 DEG C.
Invention content
The invention discloses a kind of high-temperature resistant single-component RTV fluorocarbon silicone rubbers, with existing room temperature vulcanization fluorine silicon rubber
Glue is greatly improved compared to heat resistance, and the aging in 7 days under conditions of 350 DEG C, mechanical performance is without significant change.
The present invention relates to a kind of high-temperature resistant single-component RTV fluorocarbon silicone rubbers, in terms of parts by weight, the room temperature vulcanization fluorine
Silicon rubber includes：
100 parts of hydroxy-end capped polymethyl siloxane；
5 ~ 100 parts of hydroxy-end capped liquid fluorosilicone rubber；
2 ~ 15 parts of sial high temperature resistant additive；
30 ~ 100 parts of aluminium oxide；
3 ~ 15 parts of phenyl tributanoximo silane；
Silane has online 1 ~ 5 part；
0.01 ~ 0.5 part of catalyst.
Hydroxyl endblocked polydimethylsiloxane structural formula according to the present invention is HO- [(CH3) 2Si-O] n-H, at 25 DEG C
Under average viscosity be 5 ~ 100Pa.s.
Hydroxy-end capped liquid fluorosilicone rubber according to the present invention is hydroxy-end capped poly- methyl trifluoro propyl siloxanes, knot
Structure formula is HO- [CH3 (CH2CH2CF3) Si-O] n-H, and the average viscosity at 25 DEG C is 5 ~ 100Pa.s.
Sial high temperature resistant additive according to the present invention is sial hybridized polymer, and structural formula is。
Silane coupling agent according to the present invention is gamma-amino propyl trimethoxy silicane, gamma-amino propyl triethoxy
Silane, γ-（2,3- the third oxygen of epoxy）One or more of mixtures of propyl trimethoxy silicane.
Catalyst according to the present invention is dibutyl tin laurate or dibutyltin diacetate.
A kind of preparation method of high-temperature resistant single-component RTV fluorocarbon silicone rubber according to the present invention, including following step
Suddenly：By the hydroxy-end capped polymethyl siloxane of 100 parts by weight, the hydroxy-end capped liquid fluorosilicone rubber of 5 ~ 100 parts by weight, 2 ~ 15 parts by weight
Sial high temperature resistant additive, 30 ~ 100 parts of weight alumina powders are mixed, and are uniformly dispersed, and base rubber is made；In nitrogen protection
Under the conditions of, 3 ~ 15 parts by weight phenyl tributanoximo silanes are sequentially added into the base rubber, 1 ~ 5 parts by weight silane have it is online,
0.01 ~ 0.5 part by weight of catalyst after stirring 0.5-3h, stirs 0.1 ~ 0.6h under conditions of vacuum degree is more than -0.095MPa,
Obtain high-temperature resistant single-component RTV fluorocarbon silicone rubber.
Sial high temperature resistant additive according to the present invention is sial hybridized polymer, and also referred to as poly- silicon aikyiaiurnirsoxan beta refers to
Main chain is by three kinds of silicon, oxygen, aluminium elements（Si-O-Al）The elemento-organic polymer of composition.Metal member is introduced in organosilicon systems
After plain aluminium, because Si-O-Al bond energys are higher than Si-O-Si bond energys, the heat resistance of sial hybridized polymer is greatly improved, it
Not only the brittleness of inorganic material had been overcome, but also has increased the compatibility with organic fluorinated silicone system, has greatly improved the resistance to height of fluorine silicone rubber
Warm nature energy is a kind of very effective filler for improving silicon-fluorine polymer object high temperature resistance.
The present invention is used cooperatively using the heatproofs filler such as sial hybridized polymer and aluminium oxide powder, efficiently solves room
The use problem of temperature vulcanization fluorine silicone rubber at high temperature, RTV fluorocarbon silicone rubber obtained aging 7 days under the conditions of 350 DEG C
Afterwards, mechanical property reduces amplitude within 15%, smaller with difference before aging, therefore, room temperature vulcanization fluorine silicon prepared by the present invention
Rubber can work in 350 DEG C of high temperatures, be connect especially suitable for automobile engine, aeroengine, missile propulsion system etc.
Touch the sealing under fuel oil, contact hot conditions.
Description of the drawings
Fig. 1 is the main performance index of the high-temperature resistant single-component RTV fluorocarbon silicone rubber prepared by embodiment 1.
Specific implementation mode
With reference to specific embodiment, the present invention is described in further detail.
Embodiment 1：
The present embodiment provides a kind of high-temperature resistant single-component room temperature vulcanized silicone rubbers, and in terms of parts by weight, component is as follows：Hydroxyl seals
Hold dimethyl silicone polymer（Jiangxi blue star spark organosilicon company produces 107 glue, viscosity 10500mm2/s）100 parts；Hydroxyl
Block liquid fluorosilicone rubber（Changchun Shiran spy's new material Co., Ltd produces, trade names FS-1601, viscosity 15000mm2/
s）100 parts；Sial high temperature resistant additive（Changchun Shiran spy's new material Co., Ltd produces, trade names AS-1510）10 parts；Oxygen
Change aluminium powder（Grain size is 30-50nm）60 parts；10 parts of phenyl tributanoximo silane；Gamma-amino propyl trimethoxy silicane 2
Part；0.1 part of dibutyl tin laurate.
The specific preparation method of above-mentioned high-temperature resistant single-component room temperature vulcanized silicone rubber provided in this embodiment is：By 100 parts
After hydroxyl endblocked polydimethylsiloxane and 100 parts of hydroxy-end capped liquid fluorosilicone rubbers are mixed evenly, 10 parts are sequentially added
Sial high temperature resistant additive, 60 parts of alumina powders, be uniformly dispersed obtained base rubber.Under the conditions of nitrogen protection, into base rubber according to
10 parts of phenyl tributanoximo silanes of secondary addition, 2 parts of gamma-amino propyl trimethoxy silicanes, 0.1 part of di lauric dibutyl
Tin after stirring 2h, stirs 0.5h under conditions of vacuum degree is more than -0.095MPa, obtains high-temperature resistant single-component room temperature vulcanization fluorine
Silicon rubber.
The main performance index of high-temperature resistant single-component RTV fluorocarbon silicone rubber prepared by embodiment 1 is shown in Fig. 1.
Claims (5)
1. the present invention relates to a kind of high-temperature resistant single-component RTV fluorocarbon silicone rubbers, it is characterized in that:In terms of parts by weight, the room temperature
Vulcanizing fluorine silicone rubber includes：
100 parts of hydroxy-end capped polymethyl siloxane；
5 ~ 100 parts of hydroxy-end capped liquid fluorosilicone rubber；
2 ~ 15 parts of sial high temperature resistant additive；
30 ~ 100 parts of aluminium oxide；
3 ~ 15 parts of phenyl tributanoximo silane；
Silane has online 1 ~ 5 part；
0.01 ~ 0.5 part of catalyst.
2. hydroxyl endblocked polydimethylsiloxane structural formula described in claim 1 is HO- [(CH3) 2Si-O] n-H, at 25 DEG C
Under average viscosity be 5 ~ 100Pa.s.
3. hydroxy-end capped liquid fluorosilicone rubber described in claim 1 is hydroxy-end capped poly- methyl trifluoro propyl siloxanes, knot
Structure formula is HO- [CH3 (CH2CH2CF3) Si-O] n-H, and the average viscosity at 25 DEG C is 5 ~ 100Pa.s.
4. sial high temperature resistant additive described in claim 1 is sial hybridized polymer, structural formula is。
5. silane coupling agent described in claim 1 is gamma-amino propyl trimethoxy silicane, gamma-amino propyl triethoxy
Silane, γ-（2,3- the third oxygen of epoxy）One or more of mixtures of propyl trimethoxy silicane;It is described in claim 1 to urge
Agent is dibutyl tin laurate or dibutyltin diacetate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810278377.1A CN108546410A (en) | 2018-03-31 | 2018-03-31 | A kind of high-temperature resistant single-component RTV fluorocarbon silicone rubber |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810278377.1A CN108546410A (en) | 2018-03-31 | 2018-03-31 | A kind of high-temperature resistant single-component RTV fluorocarbon silicone rubber |
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| CN108546410A true CN108546410A (en) | 2018-09-18 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3184418A (en) * | 1962-06-29 | 1965-05-18 | United States Borax Chem | Aluminosiloxane polymers and method of preparing same |
| CN102850807A (en) * | 2012-10-08 | 2013-01-02 | 滁州斯迈特复合材料有限公司 | Single-component room-temperature-vulcanized fluorosilicone rubber and preparation method thereof |
| TW201406863A (en) * | 2012-06-29 | 2014-02-16 | Dow Corning | Polyorganometallosiloxane, curable polymer composition, cured product thereof, and optical semiconductor device |
| CN103642236A (en) * | 2013-11-25 | 2014-03-19 | 山东永泰化工有限公司 | Silicone rubber addictive |
| CN104774334A (en) * | 2015-03-08 | 2015-07-15 | 北京化工大学 | Preparation method for silicon-titanium polymer capable of being used as additive |
| JP2015209466A (en) * | 2014-04-25 | 2015-11-24 | 信越化学工業株式会社 | Thermal conductive silicone composition |
| CN106280495A (en) * | 2016-08-26 | 2017-01-04 | 山东华夏神舟新材料有限公司 | A kind of high strength and high hardness Fluorosilicone rubber composition and preparation method thereof |
-
2018
- 2018-03-31 CN CN201810278377.1A patent/CN108546410A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3184418A (en) * | 1962-06-29 | 1965-05-18 | United States Borax Chem | Aluminosiloxane polymers and method of preparing same |
| TW201406863A (en) * | 2012-06-29 | 2014-02-16 | Dow Corning | Polyorganometallosiloxane, curable polymer composition, cured product thereof, and optical semiconductor device |
| CN102850807A (en) * | 2012-10-08 | 2013-01-02 | 滁州斯迈特复合材料有限公司 | Single-component room-temperature-vulcanized fluorosilicone rubber and preparation method thereof |
| CN103642236A (en) * | 2013-11-25 | 2014-03-19 | 山东永泰化工有限公司 | Silicone rubber addictive |
| JP2015209466A (en) * | 2014-04-25 | 2015-11-24 | 信越化学工業株式会社 | Thermal conductive silicone composition |
| CN104774334A (en) * | 2015-03-08 | 2015-07-15 | 北京化工大学 | Preparation method for silicon-titanium polymer capable of being used as additive |
| CN106280495A (en) * | 2016-08-26 | 2017-01-04 | 山东华夏神舟新材料有限公司 | A kind of high strength and high hardness Fluorosilicone rubber composition and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| K.A.ANDRIANOV,ET AL.: ""POLYPHENYLPOLYALUMINOSILOXANES: INFUSIBLE, BUT SOLUBLE POLYMERS"", 《ANDRIANOV》 * |
| 丁有容，等: ""用聚铝苯基硅氧烷加速硅树脂固化及固化树脂的热氧化稳定性"", 《高分子通讯》 * |
| 刘辰，等: ""聚钛硅氧烷的合成与表征"", 《材料导报》 * |
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