CN107936911A - Organosilicon sealant and preparation method thereof - Google Patents
Organosilicon sealant and preparation method thereof Download PDFInfo
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- CN107936911A CN107936911A CN201711135414.5A CN201711135414A CN107936911A CN 107936911 A CN107936911 A CN 107936911A CN 201711135414 A CN201711135414 A CN 201711135414A CN 107936911 A CN107936911 A CN 107936911A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on 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; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Sealing Material Composition (AREA)
Abstract
The present invention a kind of organosilicon sealant and preparation method thereof is disclosed, wherein, the organosilicon sealant count in parts by weight containing：100 parts of base-material；2 parts~8 parts of containing hydrogen silicone oil；0.2 part~1.0 parts of platinum catalyst；0.3 part~2.0 parts of tackifier；Wherein, the base-material count in parts by weight containing：100 parts of vinyl silicone oil；50 parts~300 parts of vinyl MQ resin；10 parts~30 parts of vinyl MDT silicone oil.Technical scheme be capable of providing one kind can either storage-stable, the rapid curing under middle low temperature at room temperature, but also with the organosilicon sealant of excellent adhesive property, anti-yellowing property and transparency.
Description
Technical field
The present invention relates to technical field of polymer materials, more particularly to a kind of organosilicon sealant and preparation method thereof.
Background technology
At present, it can generally be used in the industries such as electronics, electric appliance, automobile, illumination and arrive organosilicon sealant, it can play viscous
Connect, the effect such as fixed and insulation.Wherein, one pack system additional organosilicon fluid sealant with wherein low temperature can quickly, depth it is solid
It is the advantages that change, linear shrinkage is low, and electrical insulation capability is good, of increased attention.But one pack system add-on type is organic
Silicone sealant also at the same time there is poor storage stability, substrate bonding power is insufficient the problems such as, it is also, in practical applications, many
Occasion also proposes certain requirement to the anti-yellowing property and transparency of one pack system additional organosilicon fluid sealant.Therefore, prepare
A kind of organosilicon sealant of good combination property is obtained to have great importance.
The content of the invention
The main object of the present invention is to provide a kind of organosilicon sealant, it is desirable to provide one kind can either be stablized at room temperature
Storage, the rapid curing under middle low temperature, but also with the silicone sealant of excellent adhesive property, anti-yellowing property and transparency
Glue.
To achieve the above object, organosilicon sealant proposed by the present invention count in parts by weight containing：
100 parts of base-material；
2 parts~8 parts of containing hydrogen silicone oil；
0.2 part~1.0 parts of platinum catalyst；
0.3 part~2.0 parts of tackifier；
Wherein, the base-material count in parts by weight containing：
100 parts of vinyl silicone oil；
50 parts~300 parts of vinyl MQ resin；
10 parts~30 parts of vinyl MDT silicone oil.
Alternatively, the hydrogen content of the containing hydrogen silicone oil is 0.5%~1.5%.
Alternatively, the platinum catalyst is the thermal sensitivity platinum catalyst of ammonia alkyl polysiloxanes coordination.
Alternatively, the content of platinum is 2000ppm~5000ppm in the platinum catalyst.
Alternatively, the tackifier are including structureSiloxanes, structure beSiloxanes and structure beAt least one of siloxanes,
Wherein R1 is methyl, ethyl or propyl group, and R2 is methyl, ethyl or propyl group.
Alternatively, viscosity during 25 DEG C of the vinyl silicone oil is 1000mPas~5000mPas.
Alternatively, the mass content of the vinyl MDT silicone oil medium vinyls is 0.3%~1.5%, the vinyl
Viscosity during 25 DEG C of MDT silicone oil is 500mPas~1000mPas.
Alternatively, the base-material counts the hydrophobic gas-phase silica also contained no more than 20 parts in parts by weight.
The present invention also proposes a kind of preparation method of organosilicon sealant, and the organosilicon sealant is counted in parts by weight to be contained
Have：
100 parts of base-material；
2 parts~8 parts of containing hydrogen silicone oil；
0.2 part~1.0 parts of platinum catalyst；
0.3 part~2.0 parts of tackifier；
Wherein, the base-material count in parts by weight containing：
100 parts of vinyl silicone oil；
50 parts~300 parts of vinyl MQ resin；
10 parts~30 parts of vinyl MDT silicone oil；
The preparation method comprises the following steps：
Vinyl silicone oil, vinyl MQ resin and vinyl MDT silicone oil are mixed, obtain base-material；
The base-material is taken, and containing hydrogen silicone oil is added into the base-material, is stirred, obtains the first mixture；
Platinum catalyst is added into first mixture, continues to stir, obtains the second mixture；
Tackifier are added into second mixture, are again stirring for, obtain the organosilicon sealant.
Alternatively, in described the step of being mixed vinyl silicone oil, vinyl MQ resin and vinyl MDT silicone oil
It has been additionally added hydrophobic gas-phase silica.
The organosilicon sealant of the present invention is one pack system additional organosilicon fluid sealant, and solidification rate is extremely slow at room temperature for it
Slowly, therefore possesses splendid storage stability.Also, the organosilicon sealant is under the middle cryogenic conditions and platinum catalyst
Hydrosilylation addition reaction can be rapidly completed under catalytic action, and realizes quick, deeply-curing.Also, the organosilicon sealant
Each component is free of amine groups, i.e., has effectively evaded the introducing of chromophore so that the organosilicon sealant is by heat ageing
When it is non-aging add lustre to, so as to greatly improve the anti-yellowing property of the organosilicon sealant.Also, tackifier adds in component
Enter, be respectively provided with active function groups on two end of the chains of its molecule, the active function groups on an end of the chain can occur with substrate surface
Chemically react and be coupled, the active function groups on another end of the chain can then react and join with the three dimensions network polymer
Knot, so as to play the role of " molecular bridge " so that the organosilicon sealant is effectively carried in the adhesive force of all kinds of substrate surfaces
Height, that is, effectively improve the adhesive property of the organosilicon sealant.In addition, the organosilicon sealant is transparent or translucent,
Transparency is good.
To sum up, technical scheme provide one kind can either storage-stable, quick under middle low temperature at room temperature
Cure, but also with the organosilicon sealant of excellent adhesive property, anti-yellowing property and transparency.
Embodiment
The technical solution in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example is only the part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this area is general
Logical technical staff all other embodiments obtained without creative efforts, belong to what the present invention protected
Scope.
In addition, the technical solution between each embodiment can be combined with each other, but must be with ordinary skill
Personnel can be implemented as basis, and this technical side is will be understood that when the combination appearance of technical solution is conflicting or can not realize
The combination of case is not present, also not within the protection domain of application claims.
The present invention proposes a kind of organosilicon sealant.
The organosilicon sealant count in parts by weight containing：
100 parts of base-material；
2 parts~8 parts of containing hydrogen silicone oil；
0.2 part~1.0 parts of platinum catalyst；
0.3 part~2.0 parts of tackifier；
Wherein, the base-material count in parts by weight containing：
100 parts of vinyl silicone oil；
50 parts~300 parts of vinyl MQ resin；
10 parts~30 parts of vinyl MDT silicone oil.
The organosilicon sealant of the present invention, vinyl silicone oil, vinyl MQ resin and vinyl MDT silicone oil in base-material,
Hydrosilylation addition reaction can occur with containing hydrogen silicone oil under middle cryogenic conditions and under the catalytic action of platinum catalyst so that point
It is cross-linked with each other between son and forms three dimensions network polymer, which possesses excellent stable structure
Property, so that the organosilicon sealant after curing possesses splendid high and low temperature resistance, ageing-resistant performance, UV resistance,
It is provided simultaneously with the advantages that linear shrinkage is low, electrical insulation capability is good, intensity is high.
Also, the organosilicon sealant of the present invention is one pack system additional organosilicon fluid sealant, its solidification rate at room temperature
Extremely slowly, therefore possesses splendid storage stability.Also, the organosilicon sealant is under middle cryogenic conditions and platinum is urged
Hydrosilylation addition reaction can be rapidly completed under the catalytic action of agent, and realizes quick, deeply-curing.Also, the organosilicon is close
The each component of sealing is free of amine groups, i.e., has effectively evaded the introducing of chromophore so that the organosilicon sealant by
It is non-aging during heat ageing to add lustre to, so as to greatly improve the anti-yellowing property of the organosilicon sealant.Also, viscosified in component
The addition of agent, is respectively provided with active function groups on two end of the chains of its molecule, and the active function groups on an end of the chain can be with base material table
Face occurs chemical reaction and is coupled, and the active function groups on another end of the chain can then react with the three dimensions network polymer
And be coupled, so as to play the role of " molecular bridge " so that the organosilicon sealant is had in the adhesive force of all kinds of substrate surfaces
Effect improves, that is, effectively improves the adhesive property of the organosilicon sealant.In addition, the organosilicon sealant is transparent or translucent
Shape, transparency are good.
To sum up, technical scheme provide one kind can either storage-stable, quick under middle low temperature at room temperature
Cure, but also with the organosilicon sealant of excellent adhesive property, anti-yellowing property and transparency.
Specifically, the hydrogen content of the containing hydrogen silicone oil is 0.5%~1.5%.In this way, it may be such that silicone sealant adhesive curing
When hydrosilylation addition reaction can carry out more abundant so that effectively lifting cure after the three dimensions network polymerization that is formed
The structural stability of body, the comprehensive performance of the organosilicon sealant after lifting curing.
The platinum catalyst is the thermal sensitivity platinum catalyst of ammonia alkyl polysiloxanes coordination, and platinum contains in the platinum catalyst
Measure as 2000ppm~5000ppm.In this way, hydrosilylation addition reaction when may be such that silicone sealant adhesive curing can carry out
It is more quick, so as to effectively lift the solidification rate of organosilicon sealant.
It should be noted that the preparation method of the thermal sensitivity platinum catalyst of ammonia alkyl polysiloxanes coordination is as follows：In band
In the 500mL there-necked flasks of cooling and reflux device and thermometer, 100 parts of ammonia alkyl polysiloxanes [H are added2NC3H6Me2SiO
(Me2SiO)nSiMe2C3H6NH2, wherein n=1~100], 100 parts of dimethylbenzene, 60 parts of distilled water and 0.6 part of dodecyl front three
Ammonium chloride, stirring are warming up to 80 DEG C.Afterwards, 50 parts of potassium chloroplatinate [K are added dropwise in 1h with separatory funnel2PtCl6], drip
Continue to stir 3h after.Afterwards, stratification, water layer is separated out, and is target product after oil reservoir drying.
The tackifier are including structureSiloxanes, structure beSiloxanes and structure beAt least one of siloxanes,
Wherein R1 is methyl, ethyl or propyl group, and R2 is methyl, ethyl or propyl group.It should be noted that above-mentioned tackifier are boric acid body
It is tackifier, it can effectively lift the adhesive strength of organosilicon sealant of the present invention and plastic basis material surface.
Viscosity during 25 DEG C of the vinyl silicone oil is 1000mPas~5000mPas, in order to scattered and mixing,
So as to effectively lift the uniformity and comprehensive performance of organosilicon sealant of the present invention.
The mass content of the vinyl MDT silicone oil medium vinyls is 0.3%~1.5%, the vinyl MDT silicone oil 25
DEG C when viscosity be 500mPas~1000mPas.It should be noted that organosilicon sealant component medium vinyl of the present invention
The introducing of MDT silicone oil, can also effectively lift the organosilicon sealant pliability after curing.
The base-material counts the hydrophobic gas-phase silica also contained no more than 20 parts in parts by weight.It should be noted that this
The introducing of hydrophobic gas-phase silica in invention organosilicon sealant component, its particle granules can be uniformly distributed and be filled in curing shape
Into three dimensions network polymer gap among, in this way, on the one hand can play the role of reinforcement, enhancing, on the other hand also
The thixotropic index of organosilicon sealant of the present invention can be increased, so that its working performance is more excellent, easy to construct, and then effectively
Meet the use demand under different occasions.
The present invention also provides a kind of preparation method of organosilicon sealant, comprise the following steps：
By 100 parts of vinyl silicone oils, 50 parts~300 parts vinyl MQ resins, 10 parts~30 parts vinyl MDT silicone oil and
0.1 part~20 parts hydrophobic gas-phase silicas are placed in power mixer, and at 140 DEG C~180 DEG C, vacuum 0.09MPa~
Under 0.098MPa, dehydration blending 60min~120min, obtains base-material；
Take 100 parts of base-materials to be placed in power mixer, keep temperature be 140 DEG C~180 DEG C, vacuum be 0.09MPa~
0.098MPa；
2 parts~8 parts containing hydrogen silicone oils are added into 100 parts of base-materials, 10min~20min is stirred, obtains the first mixing
Thing；
0.2 part~1.0 parts platinum catalysts are added into the first mixture, continues to stir 10min~20min, obtains second
Mixture；
0.3 part~2.0 parts tackifier are added into the second mixture, 30min~60min is again stirring for, obtains organosilicon
Fluid sealant.
It is it should be noted that white by adjusting vinyl silicone oil, vinyl MQ resin, vinyl MDT silicone oil, hydrophobic gas phase
Carbon black, containing hydrogen silicone oil, the dosage (ratio) of platinum catalyst and tackifier, can be prepared storage stability, adhesive property, resistance to
Xanthochromia performance, curing rate, transparency, high and low temperature resistance, ageing-resistant performance, UV resistance, linear shrinkage, electric insulation
The different organosilicon sealant of the comprehensive performance such as performance and intensity, to meet the requirement of different occasions.
In addition, vacuum condition also can be replaced nitrogen atmosphere protective condition, to completely cut off room-temperature moisture to organosilicon sealant
Preparation process harmful effect, so as to ensure the superior quality of organosilicon sealant.Meanwhile in preparation process, temperature conditionss
Control, harmful effect of the moisture to the preparation process of organosilicon sealant can be also avoided, so as to ensure organosilicon sealant
Superior quality.
Organosilicon sealant of the present invention has the following advantages：
1st, the thermal sensitivity platinum catalyst of the ammonia alkyl polysiloxanes coordination of synthesis, performance is remarkable, may be such that the present invention is organic
Silicone sealant is completed to cure in 5min at 120 DEG C or completes to cure in 20min at 80 DEG C, in this way, in practical applications can
It is enough effectively to shorten the stand-by period, improve the production efficiency of product.Meanwhile the catalyst also may be such that organosilicon sealant of the present invention
It can be stored more than 3 months at 25 DEG C, also, storage temperature is lower, and Storage period is longer, so that effectively improving the present invention has
The shelf-life of machine silicone sealant, reduce the wasting of resources, reduce entreprise cost.
2nd, the tackifier in organosilicon sealant component of the present invention, not only may be such that the one pack system additional organosilicon seals
The base material such as glue and aluminium, glass, plastics, PCB, PBT has excellent adhesive property, also, since the tackifier are free of amine
Group, moreover it is possible to the effectively anti-yellowing property of lifting organosilicon sealant of the present invention.
3rd, the present invention by adding vinyl MQ resin, the high grade of transparency can be prepared in vinyl MDT silicone oil, high-strength
The organosilicon sealant of degree and high-flexibility, and the tensile strength of the organosilicon sealant, break-draw rate can meet industry
Change demand.
4th, the present invention can adjust the thixotropic index of organosilicon sealant by varying the additive amount of hydrophobic gas-phase silica,
So as to preferably meet construction technology demand.
In conclusion organosilicon sealant of the present invention and preparation method thereof provides a kind of organosilicon of excellent combination property
Fluid sealant, it can effectively meet the use demand of the industries such as illuminator, electronic apparatus.
Organosilicon sealant of the present invention and preparation method thereof is specifically described below by way of specific embodiment.
Each component proportion relation shown in being corresponded to by embodiment 1-4 in table 1 and comparative example 1-2, it is close to carry out organosilicon respectively
Sealing component configures；
Afterwards, by the preparation method of aforementioned organic silicon fluid sealant, the preparation of organosilicon sealant is carried out respectively.
Table 1
The organosilicon sealant of embodiment 1-4 and comparative example 1-2 are tested for the property, test result refers to following table 2：
Table 2
It can be seen that by embodiment 1-4：
Hardening time at 80 DEG C of the organosilicon sealant of embodiment 1-4 is no more than between 10min~18min
20min, also, the hardening time at 120 DEG C of the organosilicon sealant of embodiment 1-4 between 2min~5min, be no more than
5min, i.e., organosilicon sealant of the present invention has excellent curing performance, that is, organosilicon sealant of the present invention is under middle low temperature
Can quickly, deeply-curing.
Storage period at the organosilicon sealant (23 ± 2) DEG C of embodiment 1-4 reaches between 180d~210d
180d, i.e., organosilicon sealant of the present invention have excellent storage stability.
The break-draw rate of the organosilicon sealant of embodiment 1-4 has reached 180% between 180%~300%,
Also, the tensile strength of the organosilicon sealant of embodiment 1-4 between 2.0MPa~3.2MPa, reached 2.0MPa, cut
Shearing stress between 1.1MPa~1.8MPa, be above 1.0MPa, i.e., organosilicon sealant of the present invention has excellent intensive properties
Energy and tensile property, that is, organosilicon sealant of the present invention has excellent adhesive property.
Equal non yellowing after aging 2h at 200 DEG C of the organosilicon sealant of embodiment 1-4, i.e., organosilicon sealant tool of the present invention
There is excellent anti-yellowing property.
The appearance of the organosilicon sealant of embodiment 1-4 is transparent or semitransparent shape, i.e., organosilicon sealant of the present invention
With excellent transparency.
Hardening time exceedes more than the hardening time at 40min, 120 DEG C at 80 DEG C of the organosilicon sealant of comparative example 1
15min, hardening time is long, can not meet the needs of actual rapid construction, and there occurs Huang after aging 2h at its 200 DEG C
Become, anti-yellowing property is poor.
The shear strength of the organosilicon sealant of comparative example 2, not less than 0.5MPa, is glued between 0.2MPa~0.5MPa
Connect poor performance.
In conclusion organosilicon sealant of the present invention and preparation method thereof provides a kind of organosilicon of excellent combination property
Fluid sealant.
The foregoing is merely the preferred embodiment of the present invention, is not intended to limit the scope of the invention, every at this
Under the inventive concept of invention, the equivalent structure transformation made using present specification, or directly/other are used in indirectly
Relevant technical field is included in the scope of patent protection of the present invention.
Claims (10)
- A kind of 1. organosilicon sealant, it is characterised in that the organosilicon sealant count in parts by weight containing：100 parts of base-material；2 parts~8 parts of containing hydrogen silicone oil；0.2 part~1.0 parts of platinum catalyst；0.3 part~2.0 parts of tackifier；Wherein, the base-material count in parts by weight containing：100 parts of vinyl silicone oil；50 parts~300 parts of vinyl MQ resin；10 parts~30 parts of vinyl MDT silicone oil.
- 2. organosilicon sealant as claimed in claim 1, it is characterised in that the hydrogen content of the containing hydrogen silicone oil for 0.5%~ 1.5%.
- 3. organosilicon sealant as claimed in claim 1, it is characterised in that the platinum catalyst is matched somebody with somebody for ammonia alkyl polysiloxanes The thermal sensitivity platinum catalyst of position.
- 4. organosilicon sealant as claimed in claim 1, it is characterised in that the content of platinum is in the platinum catalyst 2000ppm~5000ppm.
- 5. organosilicon sealant as claimed in claim 1, it is characterised in that the tackifier are including structureSiloxanes, structure beSiloxanes and structure beAt least one of siloxanes, wherein R1 is methyl, ethyl or propyl group, and R2 is methyl, second Base or propyl group.
- 6. organosilicon sealant as claimed in claim 1, it is characterised in that viscosity during 25 DEG C of the vinyl silicone oil is 1000mPas~5000mPas.
- 7. organosilicon sealant as claimed in claim 1, it is characterised in that the matter of the vinyl MDT silicone oil medium vinyls It is 0.3%~1.5% to measure content, and viscosity during 25 DEG C of the vinyl MDT silicone oil is 500mPas~1000mPas.
- 8. such as the organosilicon sealant any one of claim 1-7, it is characterised in that the base-material is counted in parts by weight Also contain the hydrophobic gas-phase silica no more than 20 parts.
- 9. the preparation method of the organosilicon sealant of claim 1, it is characterised in that comprise the following steps：Vinyl silicone oil, vinyl MQ resin and vinyl MDT silicone oil are mixed, obtain base-material；The base-material is taken, and containing hydrogen silicone oil is added into the base-material, is stirred, obtains the first mixture；Platinum catalyst is added into first mixture, continues to stir, obtains the second mixture；Tackifier are added into second mixture, are again stirring for, obtain the organosilicon sealant.
- 10. the preparation method of organosilicon sealant as claimed in claim 9, it is characterised in that described by vinyl silicone oil, second Hydrophobic gas-phase silica has been additionally added in the step of alkenyl MQ resins and vinyl MDT silicone oil are mixed.
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| CN109337643A (en) * | 2018-09-27 | 2019-02-15 | 芜湖扬展新材料科技服务有限公司 | A kind of high refractive index aminomethyl phenyl LED encapsulation silastic material and preparation method thereof |
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