CN108003632A - A kind of silicon rubber and its preparation method and application - Google Patents
A kind of silicon rubber and its preparation method and application Download PDFInfo
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- CN108003632A CN108003632A CN201711289768.5A CN201711289768A CN108003632A CN 108003632 A CN108003632 A CN 108003632A CN 201711289768 A CN201711289768 A CN 201711289768A CN 108003632 A CN108003632 A CN 108003632A
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1895—Internal space filling-up means
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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
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
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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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention discloses a kind of silicon rubber and its preparation method and application, the silicon rubber is addition-type silicon rubber, it is liquid at normal temperatures, with mobility, viscosity is 40000~300000mPa.s, the longitudinal water-blocking for the hydraulic pressure of resistance to 6MPa, can bear 95 DEG C, 18 it is small when heat ageing, good viscoplasticity is presented；In addition, cubical contraction is less than 2 ‰ after addition-type silicon rubber vulcanization, be conducive to block-water effect.Silicon rubber filling cable gap using the present invention, without having to independent heating vulcanization, when cable three-layer co-extruded, vulcanize, simplifies operating procedure, have huge market prospects at the same time with insulating layer.
Description
Technical field
The present invention relates to silastic material application field, more particularly to a kind of silicon rubber and preparation method thereof and seabed electricity
Application in cable conductor.
Background technology
First, the development prospect and technological difficulties of submarine cable
Submarine cable is the subaqueous cable in seabed and river that is laid in, and divides submarine communication cable and sea electric power cable.
Sea electric power cable is mainly used for underwater transmission high power cable, is equal with the effect of underground power cable, only applies
Occasion is different with the mode of laying, it is mainly used between the island of land, crosses rivers or bay, connects drilling platforms or brill from land
Interconnection between well platform etc..Under normal circumstances, it is undoubtedly more aerial than same length using submarine cable transmission electric energy
Cable is expensive, but often more more economical than making provincialism power generation with small and isolated power station with it, and benefit is applied in offshore area
More.Submarine cable is mainly reflected in coastal cities island market, offshore oil is opened there are wide market and application prospect
Adopt, the five big market of submerged cable market and international market such as Oversea wind power generation and transmission of electricity submarine cable market, rivers and lakes.
Since submarine cable engineering is known as by countries in the world the heavy construction of complicated difficulty, the manufacturing firm of submarine cable
It is few in number in the world.Limited by seabed high voltage power cable factory length, quality risk is big, watertightness performance requirement is high
Factor, the gloomy company of only French Nike, Italy have succeeded than companies such as Rayleigh company, ABB AB, Japan Teng Cang in the world
Develop the product.40% or so of submarine cable usage amount is by the gloomy company's production of French Nike, and China 5 in the world
More than 3 times of submarine cable manufacturing enterprise of family, so that the gloomy company of Nike becomes world submarine cable largest production base, its is big
The market of part is in Europe.The high voltage sea electric power cable of China's application at present largely there is still a need for import, 35KV and with
Lower seabed crosslinked cable is substantially by domestic 5 cable factory's production supplys.
The key technology of submarine cable is the conductor of its water tightness, moisture main influence cable after being immersed in cable
And insulator.For conductor, cable is in a thermal steady state in normal operation, conductor temperature generally 60 DEG C with
On, conductor indium is may result in if moisture immerses, the energy loss resistance between conductor single line is increased so as to increase conductor
Resistance, increases the energy loss of transmission line of electricity.For insulator, although polyethylene is extremely difficult to be dissolved in the nonpolar hydrophobic thing of water
Matter, but polyethylene is a kind of Piezoelectricity being made of crystalline phase and amorphous phase.Crystalline configuration is close, but crystal boundary is deposited
In defect；Amorphous phase molecules align is loose, and intermolecular there are larger gap.Extension and electric field force under alternating electric field
Collective effect makes the hydrone of polarity be easy to penetrate into the allowance of polyethylene amorphous phase and the grain boundary defects of crystalline phase.Crosslinking
There is also the above problem in sub-polyethylene minor structure, while also there are more cross-linking by-products to serve as impurity, thus, crosslinking is poly-
Ethene also has larger water absorption rate under alternating electric field.Water tree can be produced after crosslinked polyethylene and polyethylene insulator water suction to cause
Running cable occurs breakdown and damages.
It is external mostly using the metal protection protector for the purpose of mechanical protection and waterproof or anti-using cladding metal strip etc.
The cable of water layer blocks water.But this cable is once damaged, water is just inside injury region intrusion cable, and then penetrate into
Gap (between conductor strand, extrude outer semiconducting layer, between shielded layer or protective metal shell etc.) inside to cable, is indulged along cable
To extension, long length cable is caused not use.When direct-buried cable breaks down, usually occur to change one section at point in accident
New cable makes circuit resume operation.Therefore for water when immersing inside cable, its creepage distance should be more short better.At present, I
The cable stop water of state mainly achievees the purpose that to prevent moisture from penetrating into insulating layer through sheath by water layer of strengthening defences.It is real
Existing cable blocks water comprehensively, to consider the moisture penetration of cable radial direction at the same time and effectively after prevention moisture intrusion cable along cable
Longitudinal diffusion.Otherwise whole cable is caused to scrap, not only direct economic loss is huge, can also cause large area, prolonged
Power outage, serious diseases people work, rhythm of life and civil order, brings immeasurable indirect loss.For cable
Longitudinal water-blocking, how the men of most of cables production at present from Exterior cable blocks longitudinal water stream channel if concentrating on.This mode pair
It is easier to realize in single-core cable, but implements still for the cable of multicore cable and sheathed structure and there are many difficult points.
Realize blocking water comprehensively for cable, just have to solve the problems, such as that conductor blocks water.Cable industry has done effort for this,
Such as conductor is changed to press structure and steps up the tightening factor of conductor.But use and press the effect that structure blocks water conductor
And unobvious.Because using still can there are gap, moisture to expand under the action of capillary along conductor in the conductor for pressing structure
Dissipate, while the undue conductor compacting coefficient that improves can destroy the metallic crystalline structure of single line in conductor, cause conductor to be hardened, resistance increases
Add.
Thoroughly to solve the problems, such as that conductor blocks water, it is exactly to use intermittent or continuously block water barrier by conductor that it is basic
Gaps interrupt.Method more general at present is to fill hydrophobic material or material water-proof material between each layer twisted wire in twisted wire so as to reach
To the purpose of cut-out conductor internal clearance passage.
Material water-proof material currently on the market mainly includes external petroleum jelly and domestic filling paste, hot melt adhesive and waterstop
Deng.Two classes can be divided them into from the material water-proof material feature of material：One kind is that static state passively blocks water, that is, utilizes packing material heat
The cable core of melten gel water-ring, water-blocking filling paste etc. itself and the good contact leakproofness of sheath, which reach, prevents moisture in cable
The purpose of internal flow；Another kind of is actively to absorb water and expand rapidly, so as to reach flow channel of the blocks moisture in cable.
For the impartial static passivity material water-proof material of water-blocking filling paste and hot melt adhesive, its complex production process, efficiency is low, and
And big inconvenience can be brought to construction using filling paste.
Waterstop, yarn meets water can rapidly expand and can reach certain expansion height and can simultaneously form the higher gel of intensity
It is a kind of preferably initiative material water-proof material.The simple easy for construction and production efficiency of this material water-proof material technique is high, is used
Family and the popular welcome of manufacturer.But there is also some problems for these materials at the same time.First, it is price problem, due to waterproofing rope
Price is high, can be substantially increased cable cost as packing material using it.2nd, it is block-water effect.3rd, for jointless structure
Special-shaped conductor, does not apply to yet.For the multicore cable of single-core cable and small bore, simultaneously any problem is not present in said structure, but
For heavy in section multicore cable, since cable core gap is larger, when being filled with waterproofing rope, sometimes because waterproofing rope
Have little time water swelling and make to block water unsuccessfully.
The content of the invention
The present invention provides a kind of silicon rubber and its preparation method and application, can solve in above-mentioned prior art problem
It is one or more of.
According to an aspect of the invention, there is provided a kind of silicon rubber, is addition-type silicon rubber, and it is liquid under room temperature, tool
Have mobility, viscosity is 40000~200000mPa.s, have the hydraulic pressure of resistance to 6MPa cable longitudinal water-blocking, can bear 95 DEG C,
18 it is small when heat ageing, silicon rubber include quality proportion be 1: 10 component A and B component,
Component A：100 parts of end-vinyl dimethyl silicone polymer, 1~6 part of catalyst；
B component：100 parts of end-vinyl dimethyl silicone polymer, 0~50 part of reinforcing agent, 0.2~1.0 part of auxiliary agent, inhibitor
0.01~0.1 part.
The structural formula of middle-end vinyldimethicone of the present invention is：
Good viscoplasticity is presented in silicon rubber of the present invention, and conductive surface is attached to by extruding.Silicon rubber is add-on type liquid
Body silicon rubber, its sulfidation will not discharge small molecule, avoid the influence to cable electrical property.In addition addition-type silicon rubber sulphur
Cubical contraction is less than 2 ‰ after change, is conducive to block-water effect.
In some embodiments, end-vinyl dimethyl silicone polymer viscosity is 5000~100000mPa.s.
In some embodiments, catalyst is platinum catalyst, one kind for white carbon and in MQ resins of reinforcing agent or
Two kinds, auxiliary agent is containing hydrogen silicone oil, inhibitor 1, four silicon of 3- divinyl dimethyldisiloxane or tetramethyl tetravinyl ring
Oxygen alkane.
In some embodiments, platinum catalyst is chloroplatinic acid class catalyst, and Pt contents are 1000~5000ppm, excellent
Elect 3000ppm as.
In some embodiments, white carbon is the gas-phase silica or precipitated silica being surface-treated by silazane,
Specific surface area is 150~200m2/g。
In some embodiments, MQ resins are methyl MQ silicones, the molar ratio of its M group and Q groups for (0.6~
1.2): 1, preferably (0.7~0.9): 1.Methyl MQ silicones is that its a kind of molecule is (non-as the solid that skeleton is formed using Si-O keys
Linearly) the novel organosilicon high molecular material of structure, has benefited from its long-chain globular molecule structure, have good mechanical performance and
The excellent performance such as high-low temperature resistant, electric insulation, moisture-proof, waterproof.The material purity is high, and not volatile, pliability is good, corrosion-resistant,
The mechanical strength of silicon rubber can be strengthened
In some embodiments, the hydrogeneous mass percent of containing hydrogen silicone oil is 0.3~1.0%.It is catalyzed in metallic salt
Under agent effect, the cross-linking film forming of low temperature, strengthens the water resistance of silicon rubber, improves tearing strength and friction intensity.
According to another aspect of the present invention, a kind of method for preparing above-mentioned silicon rubber is additionally provided, wherein, including following step
Suddenly：
S001, based on quality component, by 100 parts of viscosity be 5000~100000mPa.s end-vinyl poly dimethyl silicon
Oxygen alkane and 1~6 part of platinum catalyst are uniformly dispersed, and component A is obtained after deaeration；
S002, by 100 parts of viscosity be 5000~100000mPa.s end-vinyl dimethyl silicone polymer and 10~50 parts
MQ resins add reaction kettle, and stirring, when insulation 6~20 is small at 70~140 DEG C, obtains water white transparency base-material, be cooled to room temperature；
Clear base, is moved into kneader by S003, is added 10~30 parts of white carbons, when stirring at normal temperature 2 is small, is warming up to 180
DEG C, insulation, depressurizes de- low 3h and obtains base rubber.100 parts of base rubbers are moved into high speed dispersor, add 0.2~1 part of containing hydrogen silicone oil,
0.02~0.1 part of inhibitor, is evacuated to below -0.09MPa, and rotating speed is 400~500rpm, stirs 15~20 minutes, obtains B
Component；
S004, mix component A and B component according to 1: 10 ratio, and deaeration, that is, obtain silicon rubber.
In some embodiments, chloroplatinic acid catalyst is 4 parts in step S001；
In step S002, the end-vinyl dimethyl silicone polymer of 100 parts of viscosity 100000mPa.s and 42 parts of MQ resins
Mixture kept the temperature at 140 DEG C 6 it is small when；
In step S003,100 parts of clear bases are moved into high speed dispersors, add 0.35 part of 0.5% containing hydrogen silicone oil, 0.07
Part inhibitor.
Present invention also offers application of the above-mentioned silicon rubber in the sealing material that blocks water, especially with the silicon rubber of the present invention
Glue filling submarine cable conductor gap, reaches the purpose that blocks water.
Embodiment
The present invention is described in further detail below.
Raw material employed in the embodiment of the present invention is as follows：
End-vinyl dimethyl silicone polymer, purity 99%, manufacturer：Jiangxi blue star spark organosilicon Co., Ltd；
White carbon, purity 99%, manufacturer：Zhejiang Xinan Chemical Industry Group Co.Ltd；
MQ resins, purity 99%, manufacturer：Shandong Dayi Chemical Industry Co., Ltd；
Containing hydrogen silicone oil, purity 99.9%, manufacturer：Shin-Etsu Chemial Co., Ltd；
Inhibitor, purity 99.5%, manufacturer：Zhonglan Chenguang Chemical Inst；
Platinum catalyst, purity 99.9%, manufacturer：Shin-Etsu Chemial Co., Ltd；
The test method in relation to data is as follows in the embodiment of the present invention：
Viscosity test, test equipment rotation viscometer NDJ-85, reference standard GB 10247-88 carry out the silicon rubber of the present invention
The viscosity test of glue.
Silicon rubber filling mode, with a tubaeform glue groove, the full silicon rubber of the inside filling, conductor passes through from glue groove, surface
Uniformly it is stained with the silicon rubber, the silicon rubber is uniformly filled between conductor during conductor strand, is become elastomer after vulcanization, is adhered to
Conductive surface, so as to play the role of blocking water.
Longitudinally water blocking experiment is with reference to national military standard GJB 1916.
The following example has further described and demonstrated the preferred embodiment in the scope of the invention, these embodiments are only
It is in order to illustrate limitation of the present invention is not to be construed as.
Embodiment 1
The preparation of component A
By the end-vinyl dimethyl silicone polymer and 4 parts of platinum catalysts dispersion machine point of 100 parts of viscosity 5000mPa.s
Dissipate uniformly, component A is obtained after deaeration.
Embodiment 2
The preparation of B component
The end-vinyl dimethyl silicone polymer of 100 parts of viscosity 50000mPa.s and 42 parts of MQ resins are added into reaction kettles,
Stirring 10 minutes, is heated to 140 DEG C, when insulation 6 is small, obtains water white transparency base-material, be cooled to room temperature.It is transparent by 100 parts
Base-material moves into high speed dispersor, adds 0.36 part of 0.5% containing hydrogen silicone oil, 0.07 part of inhibitor, rotating speed 400-500rpm, vacuumizes
To below -0.09MPa, stir 15 minutes, obtain B1 components.
Embodiment 3
The end-vinyl dimethyl silicone polymer of 100 parts of viscosity 100000mPa.s and 42 parts of MQ resins are added into reaction kettles,
Stirring 10 minutes, is heated to 140 DEG C, when insulation 6 is small, obtains water white transparency base-material, be cooled to room temperature.It is transparent by 100 parts
Base-material moves into high speed dispersor, adds 0.36 part of 0.5% containing hydrogen silicone oil, 0.07 part of inhibitor, rotating speed 400-500rpm, vacuumizes
To below -0.09MPa, stir 15 minutes, obtain B2 components.
Embodiment 4
The preparation of B component
The end-vinyl dimethyl silicone polymer of 100 parts of viscosity 100000mPa.s and 30 parts of MQ resins are added into reaction kettles,
Stirring 10 minutes, be heated to 140 DEG C, persistently stir and keep the temperature 6 it is small when, obtain water white transparency base-material, be cooled to room temperature.Will
100 parts of clear bases move into high speed dispersor, add 5 parts of processed precipitated silicas of silazane, rotating speed 1000rpm, takes out true
Empty extremely below -0.09MPa, is stirred 30 minutes, is stopped stirring and is added 0.2 part of 0.8% containing hydrogen silicone oil, 0.07 part of inhibitor, rotating speed
400-500rpm, is evacuated to below -0.09MPa, stirs 15 minutes, obtains B3 components.
Embodiment 5
The preparation of B component
The end-vinyl dimethyl silicone polymer of 100 parts of viscosity 50000mPa.s and 10 parts of MQ resins are added into reaction kettles,
Stirring 10 minutes, be heated to 70 DEG C, persistently stir and keep the temperature 20 it is small when, obtain water white transparency base-material, be cooled to room temperature.Will
100 parts of clear bases move into kneader, add 20 parts of processed precipitated silicas of silazane, when stirring at normal temperature 2 is small, are warming up to
180 DEG C, depressurize de- low 3h and obtain base rubber.100 parts of base rubbers are moved into high speed dispersor, add 0.85 part of 0.3% containing hydrogen silicone oil,
0.035 part of inhibitor, rotating speed 400-500rpm, is evacuated to below -0.09MPa, stirs 15 minutes, obtains B4 components.
Embodiment 6
The preparation of B component
The end-vinyl dimethyl silicone polymer of 100 parts of viscosity 50000mPa.s and 10 parts of MQ resins are added into reaction kettles,
Stirring 10 minutes, be heated to 70 DEG C, persistently stir and keep the temperature 20 it is small when, obtain water white transparency base-material, be cooled to room temperature.Will
100 parts of clear bases move into kneader, add 20 parts of processed gas-phase silicas of silazane, when stirring at normal temperature 2 is small, are warming up to
180 DEG C of insulations, depressurize de- low 3h and obtain base rubber.100 parts of base rubbers are moved into high speed dispersor, add 0.85 part of 0.3% Silicon Containing Hydrogen
Oil, 0.035 part of inhibitor, rotating speed 400-500rpm, is evacuated to below -0.09MPa, stirs 15 minutes, obtains B5 components.
Embodiment 7
The preparation of B component
By the end-vinyl dimethyl silicone polymer and 30 parts of processed gas phases of silazane of 40 parts of viscosity 10000mPa.s
White carbon adds kneader, and heating stirring 2h, is warming up to 180 DEG C of insulations, depressurizes and take off low 3h.Add 60 parts of viscosity 10000mPa.s
End-vinyl dimethyl silicone polymer, be evacuated to below -0.09MPa, stir 40 minutes transparent base rubbers, be cooled to room temperature.
Transparent base rubber is moved into high speed dispersor, adds 0.87 part of 0.8% containing hydrogen silicone oil, 0.035 part of inhibitor, rotating speed 400-
500rpm, is evacuated to below -0.09MPa, stirs 15 minutes, obtains B6 components.
Embodiment 8
Component A and B1 components are mixed according to 1: 10 weight ratio, deaeration, that is, obtain silicon rubber 1#.
Embodiment 9
Component A and B2 components are mixed according to 1: 10 weight ratio, deaeration, that is, obtain silicon rubber 2#.
Embodiment 10
Component A and B3 components are mixed according to 1: 10 weight ratio, deaeration, that is, obtain silicon rubber 3#.
Embodiment 11
Component A and B4 components are mixed according to 1: 10 weight ratio, deaeration, that is, obtain silicon rubber 4#.
Embodiment 12
Component A and B5 components are mixed according to 1: 10 weight ratio, deaeration, that is, obtain silicon rubber 5#.
Embodiment 13
Component A and B6 components are mixed according to 1: 10 weight ratio, deaeration, that is, obtain silicon rubber 6#.
The silicon rubber that embodiment 8~13 obtains is analyzed, the results are shown in table 1.
The different components of table 1 and under the conditions of the performance parameter of silicon rubber for preparing
Knowable to embodiment 2 and the contrast of embodiment 3, the end-vinyl poly dimethyl silicon relatively low because employing viscosity of embodiment 2
Oxygen alkane, obtained silicon rubber 1# viscosity is relatively low, and part silicon rubber penetrates into rich covering and forms cavity, watertightness test infiltration.Implement
Although the silicon rubber 3# viscosity obtained in example 4 is larger, when cable is glued, operating process is improper, cause with conductor caking property compared with
Difference, also occurs infiltration phenomenon.
Due to cable twist excessive velocities in example 5, do not fill completely, entrain into a small amount of air and form gap, cause watertightness
, there is infiltration phenomenon in test crash.The water sealing property of this explanation water repellent electric cable is not only related to the performance of fluid sealant, Er Qieyu
It is completely related whether coating fluid sealant fills.
The silicon rubber 6# viscosity that the silicon rubber 5# and embodiment 7 that example 6 obtains are obtained is high, non-leakage, fills tight, sulphur
It is good with conductor caking property after change, shown in water test it is functional, under 6MPa hydraulic pressure, it is no infiltration phenomenon.
Above-described is only some embodiments of the present invention.For those of ordinary skill in the art, not
On the premise of departing from the invention design, various modifications and improvements can be made, these belong to the protection model of the present invention
Enclose.
Claims (10)
1. a kind of silicon rubber, is addition-type silicon rubber, wherein, the silicon rubber is liquid at normal temperatures, has mobility, viscosity
For 40000~300000mPa.s, there is the cable longitudinal water-blocking for the hydraulic pressure of resistance to 6MPa, can bear 95 DEG C, 18 it is small when heat it is old
To change, the silicon rubber includes the component A and B component that mass ratio is 1: 10,：
Component A：100 parts of end-vinyl dimethyl silicone polymer, 1~6 part of catalyst；
B component：100 parts of end-vinyl dimethyl silicone polymer, 0-50 parts of reinforcing agent, 0.2~1.0 part of auxiliary agent, inhibitor 0.01
~0.1 part.
2. silicon rubber according to claim 1, wherein, the end-vinyl dimethyl silicone polymer viscosity for 5000~
100000mPa.s。
3. silicon rubber according to claim 1, wherein, the catalyst is platinum catalyst, and the reinforcing agent is hard charcoal
The combination of one or both of black and MQ resins, the auxiliary agent is containing hydrogen silicone oil, and the inhibitor is 1,3- divinyl diformazans
Base disiloxane or t etram-ethyltetravinylcyclotetrasiloxane.
4. silicon rubber according to claim 3, wherein, the platinum catalyst is chloroplatinic acid class catalyst, and Pt contents are
1000~5000ppm.
5. silicon rubber according to claim 3, wherein, the white carbon is the gas phase hard charcoal being surface-treated by silazane
Black or precipitated silica, the specific surface area of the white carbon is 150~200m2/g。
6. silicon rubber according to claim 3, wherein, the MQ resins are methyl MQ silicones, the methyl MQ silicon trees
The M groups of fat and the molar ratio of Q groups are (0.6~1.2): 1.
7. silicon rubber according to claim 3, wherein, the hydrogeneous mass percent of the containing hydrogen silicone oil for 0.3~
1.0%.
8. a kind of method for preparing silicon rubber, wherein, comprise the following steps：
S001, based on quality component, by 100 parts of viscosity be 5000~10000mPa.s end-vinyl dimethyl silicone polymer and
1~6 part of platinum catalyst is uniformly dispersed, and component A is obtained after deaeration；
S002, by 100 parts of viscosity be 5000~100000mPa.s end-vinyl dimethyl silicone polymer and 10~50 parts of MQ trees
Fat adds reaction kettle, and stirring, when insulation 6~20 is small at 70~140 DEG C, obtains water white transparency base-material, be cooled to room temperature；
Clear base, is moved into kneader by S003, adds 10~30 parts of white carbons, when stirring at normal temperature 2 is small, is warming up to 180 DEG C, is protected
Temperature, depressurizes de- low 3h and obtains base rubber.100 parts of base rubbers are moved into high speed dispersors, add 0.2~1 part of containing hydrogen silicone oil, 0.02~
0.1 part of inhibitor, is evacuated to below -0.09MPa, and rotating speed is 400~500rpm, stirs 15~20 minutes, obtains B component；
S004, mix component A and B component according to 1: 10 ratio, and deaeration, obtains silicon rubber.
9. method as claimed in claim 8, wherein, chloroplatinic acid catalyst is 4 parts in step S001；
In step S002, the mixing of the end-vinyl dimethyl silicone polymer and 42 parts of MQ resins of 100 parts of viscosity 100000mPa.s
Thing kept the temperature at 140 DEG C 6 it is small when；
In step S003,100 parts of clear bases are moved into high speed dispersor, add 0.35 part of 0.5% containing hydrogen silicone oil, 0.07 part of suppression
Preparation.
10. such as application of the claim 1-7 any one of them silicon rubber in the sealing material that blocks water.
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| CN109651823A (en) * | 2018-12-29 | 2019-04-19 | 重庆泰山电缆有限公司 | A kind of silicon rubber and its preparation method and application |
| CN109825085A (en) * | 2018-12-29 | 2019-05-31 | 易宝（福建）高分子材料股份公司 | A kind of environmental protection flame retardant thermal contraction silicon rubber closed pore molding high temperature second time of foaming material resistant to high temperatures and preparation method thereof |
| CN110822353A (en) * | 2019-11-15 | 2020-02-21 | 徐州达娇物资贸易有限公司 | Cast high-temperature-resistant LED explosion-proof lamp |
| CN111117481A (en) * | 2019-12-31 | 2020-05-08 | 江苏微上新材料科技有限公司 | Addition type organic silicon liquid coating material and preparation method and application thereof |
| WO2020164248A1 (en) * | 2019-02-11 | 2020-08-20 | 重庆泰山电缆有限公司 | Silicone rubber formula and preparation method therefor |
| CN113733672A (en) * | 2021-09-07 | 2021-12-03 | 无锡海跃船舶新材料科技有限公司 | Anti-static explosion-proof heat-insulation material for deep sea platform |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109651823A (en) * | 2018-12-29 | 2019-04-19 | 重庆泰山电缆有限公司 | A kind of silicon rubber and its preparation method and application |
| CN109825085A (en) * | 2018-12-29 | 2019-05-31 | 易宝（福建）高分子材料股份公司 | A kind of environmental protection flame retardant thermal contraction silicon rubber closed pore molding high temperature second time of foaming material resistant to high temperatures and preparation method thereof |
| WO2020164248A1 (en) * | 2019-02-11 | 2020-08-20 | 重庆泰山电缆有限公司 | Silicone rubber formula and preparation method therefor |
| CN110822353A (en) * | 2019-11-15 | 2020-02-21 | 徐州达娇物资贸易有限公司 | Cast high-temperature-resistant LED explosion-proof lamp |
| CN111117481A (en) * | 2019-12-31 | 2020-05-08 | 江苏微上新材料科技有限公司 | Addition type organic silicon liquid coating material and preparation method and application thereof |
| CN111117481B (en) * | 2019-12-31 | 2021-10-22 | 江苏微上新材料科技有限公司 | Addition type organic silicon liquid coating material and preparation method and application thereof |
| CN113733672A (en) * | 2021-09-07 | 2021-12-03 | 无锡海跃船舶新材料科技有限公司 | Anti-static explosion-proof heat-insulation material for deep sea platform |
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Application publication date: 20180508 |