CN110330655A - Transparent ultralight silicon elastomeric precursor of one kind and preparation method thereof - Google Patents
Transparent ultralight silicon elastomeric precursor of one kind and preparation method thereof Download PDFInfo
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- CN110330655A CN110330655A CN201910763060.1A CN201910763060A CN110330655A CN 110330655 A CN110330655 A CN 110330655A CN 201910763060 A CN201910763060 A CN 201910763060A CN 110330655 A CN110330655 A CN 110330655A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/42—Block-or graft-polymers containing polysiloxane sequences
- C08G77/44—Block-or graft-polymers containing polysiloxane sequences containing only polysiloxane sequences
Abstract
The invention discloses a kind of transparent ultralight silicon rubber silicon elastomeric precursors and preparation method thereof.The transparent ultralight silicon elastomeric precursor, for common raw material, has the characteristics that transparency is high, density is low, elasticity modulus is adjustable with hydroxyl-terminated injecting two methyl siloxane and siloxanes.The transparent ultralight silicon elastomeric precursor it is specific the preparation method comprises the following steps: by using the hydroxyl-terminated injecting two methyl siloxane of stoichiometry and siloxanes as monomer, after being substantially dissolved in organic solvent, catalyst appropriate is added, obtains silicon gel；Through aging, drying, highly cross-linked transparent ultralight silicon elastomeric precursor is prepared.The transparency of the transparent ultralight silicon elastomeric precursor is from 30%-90%, density 100kg/m3‑600kg/m3, elasticity modulus is with a wide range of applications from 10MPa-10GPa etc. in industries such as special type protection, industry, transport, food and drink, medicine.
Description
Technical field
The present invention relates to a kind of transparent, low-density organosilicone elastic precursors and preparation method thereof, belong to new type rubber material
Expect synthesis field.
Background technique
Rubber is a kind of high resiliency high molecular material with reversible deformation, and usually high resilience at room temperature is and fibre
Dimension, plastics one of three big polymer materials arranged side by side, in communications and transportation, industry, agriculture, forestry, water conservancy, military affairs, civil construction, electrical logical
The wide range of areas such as news, health care, commodity storage and daily necessity play the effect that can not be substituted.By different classification sides
Method, rubber can be divided into variety classes and play unique effect in different application field.Such as by raw material sources, rubber can
It is divided into natural rubber and synthetic rubber two major classes；By mode of appearance, rubber can be divided into solid rubber, emulsus rubber, liquid rubber
With powdered rubber etc.；By physical aspect, rubber can be divided into ebonite and flexible glue, raw rubber and rubber compound etc.；By performance and purposes, rubber
General and specific rubber can be divided into.Wherein, silicon rubber refers to that main chain is alternately made of silicon and oxygen atom, is usually connected on silicon atom
The rubber of two organic groups.Silicon rubber resistance to low temperature is good, and use scope can instantaneously be resistant to 300 from -73 DEG C to 200 DEG C
DEG C or more high temperature.The good permeability of silicon rubber, OTR oxygen transmission rate are highest in synthetic polymer.In addition, silicon rubber is also
It with physiological inertia, not will lead to the prominent characteristic of blood coagulation, therefore be widely used in medical field.
However, traditional silicon rubber is difficult to meet special demand, and as science and technology is constantly progressive, to the function of silicon rubber
Change demand is continuously increased, including mechanics enhances, is fire-retardant, sterilizing, close and distant aquation is modified etc..For example, patent of invention
CN201610077691.4 has invented a kind of preparation method of silastic surface hydrophilic coating, and hydrophilic coating has good attachment
Power and biocompatibility, especially suitable for field of biomedical materials；Patent of invention CN201510644904.2 passes through antibacterial
Ion is attached on White Carbon black carrier, has obtained a kind of antibacterial high temperature silicone rubber；Patent CN201610146685.X uses multilayer
Structure design is prepared for a kind of super soft organosilicon leather, extends the use scope of organosilicon leather；For another example patent
CN201510932418.0, which is disclosed, has invented a kind of multi-component silicon rubber, has antistatic and flame retarding function；Patent
CN201310285809.9 is prepared for a kind of transparent silicone rubber containing ladder-like polysiloxane, has both improved the machinery of silicon rubber
Mechanical property, and improve the heat resistance and radiation resistance of silicon rubber.It can be seen that can by structure design and composite algorithm
To realize the functionalization of silicon rubber, however, often demand material therefor has multiple performance for extraordinary application field, such as
While meeting mechanical strength, the multiple performances such as heat-resisting, fast light may be also needed to meet.And material is obtained by composite algorithm,
It will cause pollution in the processes such as use process, failure and degradation and limit its extensive use.
Summary of the invention
In view of the deficiencies of the prior art with the limitation of material property, it is a primary object of the present invention to by structure design and
Synthetic method innovation, prepares multi-functional SiClx elastomeric precursor, that is, uses sol-gel chemistry, realizes that bi-component, original position are mild and hands over
Join sulfidation, finally obtains the silicon elastomeric precursor that transparency is adjustable, density is extremely low.The transparent ultralight silicon elastomeric precursor it is transparent
It spends from 30%-90%, density 100g/m3-600g/m3, elasticity modulus from 10MPa-10GPa etc., special type protection, industry,
The industries such as transport, food and drink, medicine are with a wide range of applications.
To realize aforementioned invention purpose, The technical solution adopted by the invention is as follows:
A kind of transparent ultralight silicon elastomeric precursor is common raw material it includes hydroxyl-terminated injecting two methyl siloxane and siloxanes,
After sol-gel chemistry changes, convection drying and obtain that a kind of transparency is high, low density transparent ultralight silicon body precursor,
The transparency of the transparent ultralight silicon elastomeric precursor is 30%-90%, density 100g/m3-600g/m3, elasticity modulus is
10MPa-10GPa。
Further, the repetitive unit n of the hydroxyl-terminated injecting two methyl siloxane differs for 10 to 150, and without being limited thereto.
Further, the stoichiometric ratio of the hydroxyl-terminated injecting two methyl siloxane and siloxanes are as follows: the molal quantity of the two
Amount is than being 2:100 to 50:1.
Further, the siloxanes include tetramethoxy siloxanes, ethyl orthosilicate, or any combination thereof.
A kind of preparation method of transparent ultralight silicon elastomeric precursor, the preparation method include the following steps:
(1) hydroxyl-terminated injecting two methyl siloxane of stoichiometry and siloxanes are sufficiently mixed in a certain amount of solvent,
Stirring is to sufficiently dissolving and form homogeneous mixed liquor；
(2) the homogeneous mixed liquor is added in a certain amount of catalyst, stands form gel after mixing evenly；
(3) gel detergent is removed into catalyst, unreacted monomer etc., is most prepared afterwards through drying transparent ultralight
Silicon elastomeric precursor.
As more one of preferred embodiment, step (1) is specifically included: by a certain amount of terminal hydroxy group poly dimethyl silicon
Oxygen alkane and siloxanes are sufficiently mixed in a certain amount of solvent, and stirring is to sufficiently dissolving and form homogeneous mixed liquor.
Further, the repetitive unit n of the hydroxyl-terminated injecting two methyl siloxane differs for 10 to 150, and without being limited thereto.
Further, the siloxanes include tetramethoxy siloxanes, ethyl orthosilicate, or any combination thereof.
Further, the solvent includes: methanol, ethyl alcohol, n-hexane, tetrahydrofuran, n,N-Dimethylformamide, diformazan
Base sulfoxide, chloroform, methylene chloride, carbon tetrachloride and both the above or a variety of any combination.
Further, the stoichiometric ratio of the hydroxyl-terminated injecting two methyl siloxane and siloxanes are as follows: the molal quantity of the two
Amount is than being 2:100 to 50:1.
Further, the solvent usage is 10 to 150 times of total mass of raw material.
As more one of preferred embodiment, step (2) is specifically included: a certain amount of catalyst being added above-mentioned equal
Liquid is mixed, stands form gel after mixing evenly.
Further, the catalyst includes ammonium hydroxide, ammonium chloride, urea, triethylamine, sodium hydroxide, potassium hydroxide, pyrrole
Pyridine or both the above or a variety of any combination.
Further, the dosage of the catalyst is the 0.1% to 5% of material quality score.
As more one of preferred embodiment, step (3) is specifically included by gel detergent removal catalyst, not
Most transparent ultralight silicon elastomeric precursor is prepared through drying afterwards in the monomer etc. of reaction.
Further, washing includes following parameter: solvent and the gel dispersion liquid phase for washing use are same；Wash time is greater than
6 hours.
Further, washing times are greater than 3 times.
Further, wash temperature is boiling temperature of the room temperature to solvent for use.
Further, the drying means includes constant pressure and dry, vacuum drying.
Further, drying temperature is 30 DEG C to 130 DEG C, and without being limited thereto.
Further, drying time is no less than 5 hours.
The present invention is designed by structure and synthetic method is innovated, and prepares multi-functional SiClx elastomeric precursor, i.e., solidifying using colloidal sol-
Gelatinization realizes bi-component, mild cross-linking vulcanized process in situ, before finally obtaining the silicon elasticity that transparency is adjustable, density is extremely low
Body.The transparency of the transparent ultralight silicon elastomeric precursor is from 30%-90%, density 100g/m3-600g/m3, elasticity modulus from
10MPa-10GPa etc. are with a wide range of applications in industries such as special type protection, industry, transport, food and drink, medicine.
Detailed description of the invention
Fig. 1 is synthetic route schematic diagram of the present invention.
Fig. 2 is chemical equation schematic diagram of the present invention.
Specific embodiment
In view of the deficiency in the prior art and system, inventor is studied for a long period of time and is largely practiced, and proposes this hair
Bright mentality of designing and scheme passes through sol-gel mainly using hydroxyl-terminated injecting two methyl siloxane and siloxanes as raw material
Chemical method prepares gel, and then the gel is washed, and transparent ultralight silicon elastomeric precursor most is prepared through drying afterwards.
The transparent ultralight silicon elastomeric precursor of one kind provided in an embodiment of the present invention includes hydroxyl-terminated injecting two methyl siloxane and silicon
Oxygen alkane is common raw material, after sol-gel chemistry changes, convection drying and to obtain a kind of transparency high, low density transparent
Ultralight silicon body precursor, the transparency of the transparent ultralight silicon elastomeric precursor are 30%-90%, density 100g/m3-600g/
m3, elasticity modulus 10MPa-10GPa.
Further, the stoichiometric ratio of the hydroxyl-terminated injecting two methyl siloxane and siloxanes are as follows: the molal quantity of the two
Amount is than being 2:100 to 50:1.
Further, the repetitive unit n of the hydroxyl-terminated injecting two methyl siloxane differs for 10 to 150, and without being limited thereto.
Further, the siloxanes include tetramethoxy siloxanes, ethyl orthosilicate, or any combination thereof.
The present invention also provides a kind of preparation methods of transparent ultralight silicon elastomeric precursor, comprising:
(1) hydroxyl-terminated injecting two methyl siloxane of stoichiometry and siloxanes are sufficiently mixed in a certain amount of solvent,
Stirring is to sufficiently dissolving and form homogeneous mixed liquor；
(2) the homogeneous mixed liquor is added in a certain amount of catalyst, stands form gel after mixing evenly；
(3) gel detergent is removed into catalyst, unreacted monomer etc., is most prepared afterwards through drying transparent ultralight
Silicon elastomeric precursor.
As more one of preferred embodiment, step (1) is specifically included: by a certain amount of terminal hydroxy group poly dimethyl silicon
Oxygen alkane and siloxanes are sufficiently mixed in a certain amount of solvent, and stirring is to sufficiently dissolving and form homogeneous mixed liquor.
Further, the repetitive unit n from 10 to 150 of the hydroxyl-terminated injecting two methyl siloxane is differed, and without being limited thereto.
Further, the siloxanes include tetramethoxy siloxanes, ethyl orthosilicate, or any combination thereof.
Further, the solvent includes: methanol, ethyl alcohol, n-hexane, tetrahydrofuran, n,N-Dimethylformamide, diformazan
Base sulfoxide, chloroform, methylene chloride, carbon tetrachloride and both the above or a variety of any combination.
Further, the stoichiometric ratio of the hydroxyl-terminated injecting two methyl siloxane and siloxanes are as follows: the molal quantity of the two
Amount is than being 2:100 to 50:1.
Further, the solvent usage is 10 to 150 times of total mass of raw material.
As more one of preferred embodiment, step (2) is specifically included: a certain amount of catalyst being added described equal
Liquid is mixed, stands form gel after mixing evenly.
Further, the catalyst includes ammonium hydroxide, ammonium chloride, urea, triethylamine, sodium hydroxide, potassium hydroxide, pyrrole
Pyridine or both the above or a variety of any combination.
Further, the dosage of the catalyst is the 0.1% to 5% of material quality score.
As more one of preferred embodiment, step (3) is specifically included by gel detergent removal catalyst, not
Most transparent ultralight silicon elastomeric precursor is prepared through drying afterwards in the monomer etc. of reaction.
Further, washing includes following parameter: solvent and the gel dispersion liquid phase for washing use are same；Wash time is greater than
6 hours.
Further, washing times are greater than 3 times.
Further, wash temperature is boiling point of the room temperature to solvent for use.
Further, the drying means includes constant pressure and dry, vacuum drying.
Further, drying temperature is 30 DEG C to 130 DEG C, and without being limited thereto.
Further, drying time is no less than 5 hours.
Below in conjunction with several examples and drawings the technical solution of the present invention is further explained explanation.
Embodiment 1
(1) the mixed liquor preparation of raw material: taking 50 parts of n values is 10 hydroxyl-terminated injecting two methyl siloxane, and 1 part of R is methoxyl group
Siloxanes, i.e. tetramethoxy-silicane is substantially dissolved in 100 parts of dehydrated alcohols, after stirring 5 hours, obtains uniform colorless
Mixed solution.
(2) gelation process: 2 parts of concentrated ammonia liquor is slowly dropped into above-mentioned mixed liquor, and after stirring 1 hour, solution is turned
It moves in closed container, and is statically placed in 80 DEG C of environment, form colorless transparent gel after 24 hours.
(3) washing and drying: above-mentioned clear gel is placed in 100 parts of dehydrated alcohols, and it is small that 12 are stirred under the conditions of 50 DEG C
When, it is washed 2 times with clean dehydrated alcohol by the same terms again later.It is dry then at 60 DEG C finally prior to drying at room temperature 24 hours
Dry 24 hours, finally in the drying 24 hours of 100 DEG C of vacuum, obtain transparent ultralight silicon elastomeric precursor.The transparent ultralight silicon elasticity
The preparation method and reaction equation of precursor are shown in Fig. 1 and Fig. 2 respectively, other physical parameters such as density, light transmittance, Young's modulus etc.
Refer to table 1.
Embodiment 2
(1) the mixed liquor preparation of raw material: taking 50 parts of n values is 150 hydroxyl-terminated injecting two methyl siloxane, and 50 parts of R are ethoxy
The siloxanes of base, i.e. ethyl orthosilicate are substantially dissolved in 500 parts of anhydrous methanols, after stirring 10 hours, obtain uniform colorless
Mixed solution.
(2) gelation process: 10 parts of concentrated ammonia liquor is slowly dropped into above-mentioned mixed liquor, after stirring 2 hours, solution transfer
It into closed container, and is statically placed in 50 DEG C of environment, forms colorless transparent gel after 8 hours.
(3) washing and drying: above-mentioned clear gel is placed in 200 parts of anhydrous methanols, and it is small that 12 are stirred under the conditions of 60 DEG C
When, it is washed 2 times with clean anhydrous methanol by the same terms again later.It is dry then at 60 DEG C finally prior to drying at room temperature 24 hours
Dry 24 hours, finally in the drying 24 hours of 130 DEG C of vacuum, obtain transparent ultralight silicon elastomeric precursor.The transparent ultralight silicon elasticity
The preparation method and reaction equation of precursor are shown in Fig. 1 and Fig. 2 respectively, other physical parameters such as density, light transmittance, Young's modulus etc.
Refer to table 1.
Embodiment 3
(1) the mixed liquor preparation of raw material: taking 50 parts of n values is 100 hydroxyl-terminated injecting two methyl siloxane, and 100 parts of R are ethoxy
The siloxanes of base, i.e. ethyl orthosilicate are substantially dissolved in 300 parts of tetrahydrofurans, after stirring 8 hours, obtain uniform colorless
Mixed solution.
(2) gelation process: 15 parts of concentrated ammonia liquor is slowly dropped into above-mentioned mixed liquor, after stirring 2 hours, solution transfer
It into closed container, and is statically placed in 60 DEG C of environment, forms colorless transparent gel after 48 hours.
(3) washing and drying: above-mentioned clear gel is placed in 500 parts of dehydrated alcohols, and it is small that 12 are stirred under the conditions of 60 DEG C
When, it is washed 2 times with clean dehydrated alcohol by the same terms again later.It is dry then at 50 DEG C finally prior to drying at room temperature 24 hours
Dry 24 hours, finally in the drying 24 hours of 110 DEG C of vacuum, obtain transparent ultralight silicon elastomeric precursor.The transparent ultralight silicon elasticity
The preparation method and reaction equation of precursor are shown in Fig. 1 and Fig. 2 respectively, other physical parameters such as density, light transmittance, Young's modulus etc.
Refer to table 1.
Embodiment 4
(1) the mixed liquor preparation of raw material: taking 20 parts of n values is 120 hydroxyl-terminated injecting two methyl siloxane, and 100 parts of R are ethoxy
The siloxanes of base, i.e. ethyl orthosilicate are substantially dissolved in 100 parts of DMF, and after stirring 8 hours, the mixing for obtaining uniform colorless is molten
Liquid.
(2) gelation process: 20 parts of concentrated ammonia liquor is slowly dropped into above-mentioned mixed liquor, after stirring 2 hours, solution transfer
It into closed container, and is statically placed in 80 DEG C of environment, forms colorless transparent gel after 18 hours.
(3) washing and drying: above-mentioned clear gel is placed in 300 parts of dehydrated alcohols, and it is small that 12 are stirred under the conditions of 60 DEG C
When, it is washed 2 times with clean dehydrated alcohol by the same terms again later.It is dry then at 50 DEG C finally prior to drying at room temperature 24 hours
Dry 24 hours, finally in the drying 24 hours of 90 DEG C of vacuum, obtain transparent ultralight silicon elastomeric precursor.Before the transparent ultralight silicon elasticity
The preparation method and reaction equation of body are shown in Fig. 1 and Fig. 2 respectively, other physical parameters such as density, light transmittance, Young's modulus etc. are asked
Referring to table 1.
Embodiment 5
(1) the mixed liquor preparation of raw material: taking 10 parts of n values is 60 hydroxyl-terminated injecting two methyl siloxane, and 50 parts of R are ethyoxyl
Siloxanes, i.e. ethyl orthosilicate is substantially dissolved in 200 parts of DMSO, and after stirring 8 hours, the mixing for obtaining uniform colorless is molten
Liquid.
(2) gelation process: 5 parts of concentrated ammonia liquor is slowly dropped into above-mentioned mixed liquor, after stirring 8 hours, solution transfer
It into closed container, and is statically placed in 120 DEG C of environment, forms colorless transparent gel after 24 hours.
(3) washing and drying: above-mentioned clear gel is placed in 500 parts of dehydrated alcohols, and it is small that 12 are stirred under the conditions of 60 DEG C
When, it is washed 2 times with clean dehydrated alcohol by the same terms again later.It is dry then at 50 DEG C finally prior to drying at room temperature 24 hours
Dry 24 hours, finally in the drying 24 hours of 110 DEG C of vacuum, obtain transparent ultralight silicon elastomeric precursor.The transparent ultralight silicon elasticity
The preparation method and reaction equation of precursor are shown in Fig. 1 and Fig. 2 respectively, other physical parameters such as density, light transmittance, Young's modulus etc.
Refer to table 1.
Embodiment 6
(1) the mixed liquor preparation of raw material: taking 50 parts of n values is 80 hydroxyl-terminated injecting two methyl siloxane, and 50 parts of R are ethyoxyl
Siloxanes, i.e. ethyl orthosilicate is substantially dissolved in 200 parts of ethyl alcohol, and after stirring 8 hours, the mixing for obtaining uniform colorless is molten
Liquid.
(2) gelation process: 5 parts of concentrated ammonia liquor is slowly dropped into above-mentioned mixed liquor, after stirring 8 hours, solution transfer
It into closed container, and is statically placed in 60 DEG C of environment, forms colorless transparent gel after 24 hours.
(3) washing and drying: above-mentioned clear gel is placed in 200 parts of dehydrated alcohols, and it is small that 12 are stirred under the conditions of 60 DEG C
When, it is washed 2 times with clean dehydrated alcohol by the same terms again later.It is dry then at 90 DEG C finally prior to drying at room temperature 24 hours
Dry 24 hours, finally in the drying 24 hours of 110 DEG C of vacuum, obtain transparent ultralight silicon elastomeric precursor.The transparent ultralight silicon elasticity
The preparation method and reaction equation of precursor are shown in Fig. 1 and Fig. 2 respectively, other physical parameters such as density, light transmittance, Young's modulus etc.
Refer to table 1.
The performance parameter of transparent ultralight silicon elastomeric precursor is obtained in 1 embodiment 1-6 of table
The foregoing examples are merely illustrative of the technical concept and features of the invention, its object is to allow the person skilled in the art to be
It cans understand the content of the present invention and implement it accordingly, it is not intended to limit the scope of the present invention.It is all smart according to the present invention
The equivalent transformation or modification that refreshing essence is done, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of transparent ultralight silicon elastomeric precursor, it is characterised in that with hydroxyl-terminated injecting two methyl siloxane and siloxanes be common former
Material, after sol-gel chemistry changes, convection drying and obtain that a kind of transparency is high, before low density transparent ultralight silicon elasticity
Body；The transparency of the transparent ultralight silicon elastomeric precursor is 30%-90%, density 100g/m3-600g/m3, elasticity modulus is
10MPa-10GPa。
2. transparent ultralight silicon elastomeric precursor according to claim 1, which is characterized in that the terminal hydroxy group polydimethylsiloxanes
The stoichiometric ratio (molal quantity ratio) of alkane and siloxanes is 2:100 to 50:1.
3. transparent ultralight silicon elastomeric precursor according to claim 1, which is characterized in that the terminal hydroxy group polydimethylsiloxanes
The repetitive unit n of alkane is 10 to 150.
4. transparent ultralight silicon elastomeric precursor according to claim 1, which is characterized in that the siloxanes includes tetramethoxy
Siloxanes, ethyl orthosilicate, or any combination thereof.
5. transparent ultralight silicon elastomeric precursor according to claim 1 and preparation method thereof, it is characterised in that the preparation side
Method includes the following steps:
(1) it using the hydroxyl-terminated injecting two methyl siloxane of stoichiometry and siloxanes as raw material, is sufficiently mixed a certain amount of molten
In agent, stirring is to sufficiently dissolving and form homogeneous mixed liquor；
(2) the homogeneous mixed liquor is added in a certain amount of catalyst, stands form gel after mixing evenly；
(3) gel detergent is removed into catalyst, unreacted monomer etc., transparent ultralight silicon bullet most is prepared through drying afterwards
Property precursor.
6. preparation method according to claim 5, it is characterised in that: step (1) described solvent includes: methanol, ethyl alcohol, just
Hexane, tetrahydrofuran, N,N-dimethylformamide, dimethyl sulfoxide, chloroform, methylene chloride, carbon tetrachloride, and/or more than two
Kind or a variety of any combination.
7. according to the described in any item preparation methods of claim 5 or 6, it is characterised in that: step (1) solvent usage is original
10 to 150 times for expecting gross mass.
8. preparation method according to claim 5, it is characterised in that: step (2) described catalyst includes ammonium hydroxide, chlorination
Ammonium, urea, triethylamine, sodium hydroxide, potassium hydroxide, pyridine or both the above or a variety of any combination；And/or it described urges
The dosage of agent is the 0.1% to 5% of material quality score.
9. preparation method according to claim 5, it is characterised in that: step (3) washing includes following parameter: washing
The solvent of use and gel dispersion liquid phase are same；And/or wash time is greater than 6 hours；And/or washing times are greater than 3 times；And/or
Wash temperature is boiling temperature of the room temperature to solvent for use.
10. preparation method according to claim 5, it is characterised in that: step (3) described drying means includes that normal pressure is dry
Dry, vacuum drying；And/or the drying temperature is 30 DEG C to 130 DEG C.
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| JPS6330539A (en) * | 1986-07-24 | 1988-02-09 | Isuzu Motors Ltd | Method of treating surface of plastic product |
| CN103382251A (en) * | 2013-06-08 | 2013-11-06 | 文仁光 | Low-viscosity alkoxy terminated polysiloxane and preparation method thereof |
| CN103937266A (en) * | 2014-04-04 | 2014-07-23 | 东莞市柏力有机硅科技有限公司 | Surface-bonded addition type liquid silicon rubber and preparation method thereof |
| CN105110340A (en) * | 2015-06-23 | 2015-12-02 | 北京建工新型建材有限责任公司 | Preparation method for elastic transparent silica aerogel |
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Application publication date: 20191015 |