CN106854369A - A kind of dual composition addition type mould silica gel of the high strength easy demoulding and preparation method thereof - Google Patents
A kind of dual composition addition type mould silica gel of the high strength easy demoulding and preparation method thereof Download PDFInfo
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- CN106854369A CN106854369A CN201611254266.4A CN201611254266A CN106854369A CN 106854369 A CN106854369 A CN 106854369A CN 201611254266 A CN201611254266 A CN 201611254266A CN 106854369 A CN106854369 A CN 106854369A
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/006—Additives being defined by their surface area
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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
Dual composition addition type mould silica gel the invention discloses a kind of high strength easy demoulding and preparation method thereof,Comprising 50 80 parts of first components,3 10 parts of component Bs,20 40 parts of white carbons,0.003 0.01 parts of catalyst,0.002 0.03 parts of inhibitor 1,0.1 1.0 parts of inhibitor 2 are constituted,Using advanced white carbon treatment technology,White carbon is set preferably to be scattered in composition,So as to obtain high performance Addition-type mold rubber,Composition has excellent release property,Mobility and mechanical property,Especially tearing strength can reach 30kN/m,Dramatically improve the overmolded number of times and overmolded quality of mold glue,Can be widely used for epoxy resin,Unsaturated-resin,Polyester resin,Paraffin,Art Stone,Emulation sculpture,The applications such as the accurate duplication for pouring shaping and prototype model of the material such as Glass Craft and low-melting alloy.
Description
Technical field
Dual composition addition type mould silica gel the present invention relates to a kind of high strength easy demoulding and preparation method thereof, belongs to silica gel
Field of material technology.
Background technology
Add-on type mould silica gel have environmental protection, good fluidity easy processing, tensile tear strength overmolded high often, size it is steady
The characteristics of qualitative good, transparency is good, shrinkage factor is small, can be widely used for epoxy resin, unsaturated-resin and polyester resin, paraffin,
The materials such as Art Stone, emulation sculpture, Glass Craft and low-melting alloy pour shaping, this low viscous high-strength mold glue invention
More can operate with the production of precision die, three-dimensional brill and exquisite duplicate.
In the market add-on type mould silica gel generally also has that tensile strength is low, tearing strength is relatively low, release property is poor, can process
The shortcomings of poor performance, often overmolded is more for several times just occurs that mould breakage, contraction distortion are big, greatly affected mold use
Life-span and product brightness.
The content of the invention
Present invention aim at a kind of dual composition addition type mould silica gel of the high strength easy demoulding of offer and preparation method thereof,
Adding high transparency, the vinyl silicone oil of low volatile and high-specific surface area fume colloidal silica carries out the original of the inorganic agents such as silazane
Position treatment is compound, based on liquid silastic base rubber treatment technology, prepares the base rubber of high transparency high dispersive；Again from meticulous
The raw material of screening carries out the AB double-components formula design of uniqueness, and the mold glue flow processability of preparation is good, linear shrinkage is small, draw
Stretch Strength Tear Strength high, tearing strength may be up to more than 30KN/m, and improve the processing characteristics of mold glue, release property and
Mechanical property so that product has extraordinary mobility, easy mold release breaches the technology of traditional moulds glue low intensity short life
Problem, can be used for the modellings such as dimension precision requirement crystal drilling high, Art Stone.
A kind of dual composition addition type mould silica gel of high strength easy demoulding, is made up of the raw material of following masses number：
50-80 parts of first component
Component B 3-10 parts
White carbon 20-40 parts
4-12 parts of white carbon inorganic agent
Catalyst 0.003-0.1 parts
0.002-0.03 parts of inhibitor 1
0.1-1.0 parts of inhibitor 2
Described first component includes vinyl-terminated silicone fluid and end-vinyl pendant vinyl base silicone oil, structural formula such as formula（1）It is shown：
(1)
Above-mentioned formula (1）In, n=0-60, m=150-1800.
Described component B is containing hydrogen silicone oil, comprising end group containing hydrogen silicone oil and side the chain containing hydrogen silicone oil containing SiH, knot
Structure such as formula（2）It is shown：
(2)
Above-mentioned formula（2）In, p=0-60, q=20-200.
Described catalyst is platinum catalyst, preferably Karst platinum catalyst.
The specific surface area of described white carbon is no less than 200m2/ g, preferably specific surface area are more than 300 m2The gas phase of/g is white
Carbon black.
Described white carbon inorganic agent is hexa methyl silazane, tetramethyl divinyl disilazane, the silicon nitrogen of seven methyl two
One or two kinds of mixture in alkane, vinyl list end socket.
The inhibitor 1 be 1- acetenyl -1- cyclohexanol, 2- methyl -3- butine -ol and 3,5- dimethyl -1- hexins -
At least one in 3- alcohol and 3- methyl isophthalic acids-dodecyne -3- alcohol.
The inhibitor 2 is t etram-ethyltetravinylcyclotetrasiloxane, vinyl double seal head, the ethene basic ring five of pentamethyl five
At least one in the methyl vinyl silicones such as siloxanes.
A kind of dual composition addition type mould silica gel of high strength easy demoulding, preparation method is：By the end ethene in first component
Base silicone oil, white carbon, white carbon inorganic agent and water carry out in-situ treatment and are combined, and prepare the base rubber of high transparency high dispersive；In base
End-vinyl pendant vinyl base silicone oil, the catalyst in first component are added in glue, component A is prepared into；Again by first component, second group
Part, inhibitor 1 and inhibitor 2, are prepared into B component；By A, B component mixing and stirring, pressure be -0.095~-
Vacuumizing and defoaming under 0.1MPa, is then poured into mould, 30mins is solidified at 100 DEG C and is made mold glue.
The advantage of the invention is that：The mould silica gel of preparation range of viscosities at 24 DEG C is 40000 ~ 130000 mPas,
Shore A hardness 30 ~ 45, tensile strength is 6.0 ~ 8.5 MPa, and tear strength is 25 ~ 35 kN/m, and resilience is more than 60%, can be wide
It is general for being widely used in unsaturated-resin, polyester resin, paraffin, Art Stone, emulation sculpture, Glass Craft and low melting point
The materials such as alloy pour shaping, more can operate with precision die, it is three-dimensional bore and exquisite duplicate production.
Specific implementation method
Further detailed, complete explanation is done to technical solution of the present invention with reference to embodiment.Be necessary it is pointed out here that be
Following examples are served only for being further described the present invention, it is impossible to be interpreted as limiting the scope of the invention, can be with
Nonessential modifications and adaptations are made according to the present invention.
Embodiment 1：
A kind of dual composition addition type mould silica gel of high strength easy demoulding, preparation method is：
Base rubber prepares：By 35 parts of the vinyl-terminated silicone fluid that viscosity is 20000 mPa.s, viscosity is the end-vinyl of 3500 mPa.s
8 parts of silicone oil, the m of specific surface area 300230 parts of the white carbon of/g, 8 parts of HMDS, 2 parts of water is added in kneader.
It is sufficiently mixed 1 ~ 2 hour under room temperature or less than 80 DEG C inert atmosphere protections, starts to vacuumize after being then warmed up to 130 ~ 150 DEG C
2 ~ 4H, maintains the temperature at 150 ~ 170 DEG C when vacuumizing, then cool to 110 ~ 140 DEG C, and it is 3500 mPa.s to add 17 parts of viscosity
Methyl vinyl silicon oil, stir, base rubber is obtained after cooling.
Component A prepares：75 parts of above-mentioned base rubber, viscosity is 20 parts of the end-vinyl of 3500 mPa.s, and viscosity is 1000
3.5 parts of the pendant vinyl base of mPa.s, viscosity is 1.5 parts of the high-vinyl silicone oil of 450 mPa.s, and 0.01 part of catalyst, stirring is equal
It is even.
B component prepares：Viscosity is 53 parts of the end-vinyl of 3500 mPa.s, the hydrogeneous containing hydrogen silicone oil 22 of side chain end group
Part, 12 parts of side chain containing hydrogen silicone oil holds 10 parts of containing hydrogen silicone oil, 3 parts of inhibitor 2 to stir.
By A, B component according to 10:Then 1 ratio mixing and stirring, vacuumizing and defoaming solidifies at 150 DEG C
10min, is obtained the high intensity Addition-type mold rubber of this EXPERIMENTAL EXAMPLE.
Embodiment 2：
A kind of dual composition addition type mould silica gel of high strength easy demoulding, preparation method is：
Component A prepares：70 parts of the base rubber of Example 1, viscosity is 22 parts of the end-vinyl of 3500 mPa.s, and viscosity is 1000
5.4 parts of the pendant vinyl base of mPa.s, viscosity is 2.5 parts of the high-vinyl silicone oil of 450 mPa.s, and 0.02 part of catalyst, stirring is equal
It is even
B component prepares：Viscosity is 43 parts of the end-vinyl of 3500 mPa.s, 25 parts hydrogeneous of containing hydrogen silicone oil of side chain end group, side
12 parts of chain containing hydrogen silicone oil, holds 15 parts of containing hydrogen silicone oil, 5 parts of inhibitor 2 to stir
By A, B component according to 10:Then 1 ratio mixing and stirring, vacuumizing and defoaming solidifies 10min at 150 DEG C, system
Obtain the high intensity Addition-type mold rubber of this EXPERIMENTAL EXAMPLE.
Embodiment 3：
A kind of dual composition addition type mould silica gel of high strength easy demoulding, preparation method is：
Component A prepares：78.5 parts of the base rubber of Example 1, viscosity is 12.3 parts of the end-vinyl of 100000 mPa.s, and viscosity is
7.5 parts of the pendant vinyl base of 1000 mPa.s, viscosity is 1.5 parts of the vinyl-terminated silicone fluid of 1500 mPa.s, 0.015 part of catalysis
Agent, stirs
B component prepares：Viscosity is 64.4 parts of the end-vinyl of 1500 mPa.s, the hydrogeneous containing hydrogen silicone oil 22.6 of side chain end group
Part, hold 11.5 parts of containing hydrogen silicone oil, 0.1 part of inhibitor, 1,1.4 parts of inhibitor 2 to stir
By A, B component according to 10:Then 1 ratio mixing and stirring, vacuumizing and defoaming solidifies 10min at 150 DEG C, system
Obtain the high intensity Addition-type mold rubber of this EXPERIMENTAL EXAMPLE.
Comparative example 1：
A kind of dual composition addition type mould silica gel of high strength easy demoulding, preparation method is：
Base rubber prepares：By 35 parts of the vinyl-terminated silicone fluid that viscosity is 20000 mPa.s, viscosity is the end-vinyl of 3500 mPa.s
8 parts of silicone oil, the m of specific surface area 300230 parts of the white carbon of/g, 8 parts of HMDS, 2 parts of water is added in kneader.
It is sufficiently mixed 1 ~ 2 hour under room temperature or less than 80 DEG C inert atmosphere protections, starts to vacuumize after being then warmed up to 130 ~ 150 DEG C
2 ~ 4H, maintains the temperature at 150 ~ 170 DEG C when vacuumizing, then cool to 110 ~ 140 DEG C, and it is 3500 mPa.s to add 17 parts of viscosity
Methyl vinyl silicon oil, stir, base rubber is obtained after cooling.
Component A prepares：75 parts of above-mentioned base rubber, viscosity is 20 parts of the end-vinyl of 3500 mPa.s, and viscosity is 1000
3.5 parts of the pendant vinyl base of mPa.s, viscosity is 1.5 parts of the high-vinyl silicone oil of 450 mPa.s, and 0.01 part of catalyst, stirring is equal
It is even.
Again 53 parts of the end-vinyl that viscosity is 3500 mPa.s, 22 parts hydrogeneous of containing hydrogen silicone oil of side chain end group, side chain
12 parts of containing hydrogen silicone oil, holds 10 parts of containing hydrogen silicone oil, 3 parts of inhibitor 2 to be directly added in component A, stir, obtain final product.
Addition-type mold rubber prepared by embodiment 1, embodiment 2, embodiment 3, comparative example 1 is carried out into performance test, it is mixed
Product viscosity flies No. 7 rotors of viscosimeter using rich power, and 5rpm is tested, and hardness is tested according to ASTM D2240, according to ASTM
D412 tests tensile strength and elongation at break, and tearing strength is tested according to ASTM D412.Actual client application is assessed
The release property and overmolded number of times of product.Test result is as shown in table 1.
The performance test results of table 1
As it can be seen from table 1 embodiment 1, embodiment 2 and embodiment 3 and other like products such as comparative example 1（It is not divided into A, B group
Divide and prepare）, patent CN105255198A, CN103756332A compare, tensile strength improves 60%, and tear strength brings up to 35
KN/m, overmolded number of times reaches 40 times, and tensile strength and tearing strength and overmolded number of times are greatly improved.Importantly,
The mobility and release property of product are very good in client feedback, hence it is evident that better than like product and comparative example 1（It is not divided into A, B group
Divide and prepare）.And the different viscosities of embodiment 1,2,3, hardness, intensity can meet the application of different die industries, the He of embodiment 1
Embodiment 2 can be used for the materials such as epoxy resin, unsaturated-resin and polyester resin, paraffin, Glass Craft and low-melting alloy
The application for pouring shaping of material, it is contour that embodiment 3 can be applied to three-dimensional water drilling, emulation sculpture, precision die and exquisite duplicate
The application of end industry.
In sum, the present invention is that a height stretches high tear strength and viscosity is low easy to process, and release property is good, overmolded time
Many, the Addition-type mold rubber of long service life of number.
Claims (9)
1. the dual composition addition type mould silica gel of a kind of high strength easy demoulding, it is characterized by：By the raw material system of following masses number
Into：
50-80 parts of first component
Component B 3-10 parts
White carbon 20-40 parts
4-12 parts of white carbon inorganic agent
Catalyst 0.003-0.1 parts
0.002-0.03 parts of inhibitor 1
0.1-1.0 parts of inhibitor 2.
2. the dual composition addition type mould silica gel of a kind of high strength easy demoulding as claimed in claim 1, it is characterized by：Described
First component includes vinyl-terminated silicone fluid and end-vinyl pendant vinyl base silicone oil, structural formula such as formula（1）It is shown：
(1)
Above-mentioned formula (1）In, n=0-60, m=150-1800.
3. the dual composition addition type mould silica gel of a kind of high strength easy demoulding as claimed in claim 1, it is characterized by：Described
Component B is containing hydrogen silicone oil, comprising end group containing hydrogen silicone oil and side the chain containing hydrogen silicone oil containing SiH, structure such as formula（2）Institute
Show：
(2)
Above-mentioned formula（2）In, p=0-60, q=20-200.
4. the dual composition addition type mould silica gel of a kind of high strength easy demoulding as claimed in claim 1, it is characterized by：Described
Catalyst is platinum catalyst, preferably Karst platinum catalyst.
5. the dual composition addition type mould silica gel of a kind of high strength easy demoulding as claimed in claim 1, it is characterized by：Described
The specific surface area of white carbon is no less than 200m2/ g, preferably specific surface area are more than 300 m2The gas-phase silica of/g.
6. the dual composition addition type mould silica gel of a kind of high strength easy demoulding as claimed in claim 1, it is characterized by：Described
White carbon inorganic agent is hexa methyl silazane, tetramethyl divinyl disilazane, heptamethyldisilazane, vinyl list envelope
One or two kinds of mixture in head.
7. the dual composition addition type mould silica gel of a kind of high strength easy demoulding as claimed in claim 1, it is characterized by：The suppression
Preparation 1 be 1- acetenyl -1- cyclohexanol, 2- methyl -3- butine -ol and 3,5- dimethyl -1- hexin -3- alcohol and 3- methyl isophthalic acids -
At least one in dodecyne -3- alcohol.
8. the dual composition addition type mould silica gel of a kind of high strength easy demoulding as claimed in claim 1, it is characterized by：The suppression
Preparation 2 is the methyl second such as t etram-ethyltetravinylcyclotetrasiloxane, vinyl double seal head, the vinyl D5 of pentamethyl five
At least one in alkenyl siloxane.
9. the dual composition addition type mould silica gel of a kind of high strength easy demoulding as claimed in claim 1, it is characterized by：Preparation side
Method is：Vinyl-terminated silicone fluid in first component, white carbon, white carbon inorganic agent and water are carried out into in-situ treatment to be combined, is prepared
The base rubber of high transparency high dispersive；End-vinyl pendant vinyl base silicone oil, catalyst in adding first component in base rubber, are prepared into
Component A；Again by first component, component B, inhibitor 1 and inhibitor 2, B component is prepared into；By A, B component mixing and stirring,
The vacuumizing and defoaming in the case where pressure is -0.095~-0.1MPa, is then poured into mould, 30mins is solidified at 100 DEG C and is made
Mold glue.
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| CN201611254266.4A CN106854369A (en) | 2016-12-30 | 2016-12-30 | A kind of dual composition addition type mould silica gel of the high strength easy demoulding and preparation method thereof |
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| CN201611254266.4A CN106854369A (en) | 2016-12-30 | 2016-12-30 | A kind of dual composition addition type mould silica gel of the high strength easy demoulding and preparation method thereof |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108117759A (en) * | 2018-01-19 | 2018-06-05 | 扬州宏远新材料股份有限公司 | A kind of low viscosity mold glue and preparation method thereof |
| CN108219671A (en) * | 2018-01-11 | 2018-06-29 | 佛山市天宝利硅工程科技有限公司 | A kind of bi-component addition type liquid silastic and preparation method thereof |
| CN108250952A (en) * | 2018-01-19 | 2018-07-06 | 扬州宏远新材料股份有限公司 | A kind of coating silicon rubber and preparation method thereof |
| CN108250762A (en) * | 2018-01-19 | 2018-07-06 | 扬州宏远新材料股份有限公司 | A kind of high viscosity mold glue and preparation method thereof |
| CN108359242A (en) * | 2018-02-24 | 2018-08-03 | 江苏燕园精英医疗科技有限公司 | A kind of transparent silicone rubber die material and preparation method |
| CN109439211A (en) * | 2018-11-01 | 2019-03-08 | 苏州泛普科技股份有限公司 | Touch control film high dielectric strength optical cement and preparation method thereof |
| CN109468026A (en) * | 2018-11-21 | 2019-03-15 | 芜湖春风新材料有限公司 | A kind of guarantor's mould agent coating and preparation method thereof |
| CN109523842A (en) * | 2018-11-01 | 2019-03-26 | 苏州泛普科技股份有限公司 | Highly sensitive touch-control blackboard |
| CN109749462A (en) * | 2019-01-07 | 2019-05-14 | 上海灼日新材料科技有限公司 | A kind of high-modulus silicone mold glue and preparation method thereof |
| CN110499032A (en) * | 2019-08-28 | 2019-11-26 | 江西蓝星星火有机硅有限公司 | A kind of self-lubricating add-on type liquid silicon rubber and its preparation method and application |
| CN110511571A (en) * | 2019-07-30 | 2019-11-29 | 浙江荣泰科技企业有限公司 | A kind of the stator winding end insulation system and processing method of generator |
| CN110643171A (en) * | 2019-10-19 | 2020-01-03 | 上海麦艺文化艺术设计有限公司 | Silica gel sculpture and preparation process thereof |
| CN111171579A (en) * | 2020-02-25 | 2020-05-19 | 江西蓝星星火有机硅有限公司 | Wear-resistant temperature-resistant self-lubricating silicone rubber and preparation method and application thereof |
| CN111748315A (en) * | 2020-07-10 | 2020-10-09 | 浙江鑫钰新材料有限公司 | High-adhesion boiling-resistant organosilicon insulating sealant and preparation method thereof |
| CN113549330A (en) * | 2021-07-23 | 2021-10-26 | 东莞市德鸿家居用品有限公司 | High-strength easy-demolding mold silica gel and preparation method thereof |
| CN115160796A (en) * | 2022-08-18 | 2022-10-11 | 广州福泽新材料有限公司 | Preparation process of high-performance addition type mold glue |
| CN115260768A (en) * | 2022-08-05 | 2022-11-01 | 深圳市联星服装辅料有限公司 | High-strength easy-demolding heat-transfer mold silica gel and preparation method of transfer mark thereof |
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| CN108219671A (en) * | 2018-01-11 | 2018-06-29 | 佛山市天宝利硅工程科技有限公司 | A kind of bi-component addition type liquid silastic and preparation method thereof |
| CN108117759A (en) * | 2018-01-19 | 2018-06-05 | 扬州宏远新材料股份有限公司 | A kind of low viscosity mold glue and preparation method thereof |
| CN108250952A (en) * | 2018-01-19 | 2018-07-06 | 扬州宏远新材料股份有限公司 | A kind of coating silicon rubber and preparation method thereof |
| CN108250762A (en) * | 2018-01-19 | 2018-07-06 | 扬州宏远新材料股份有限公司 | A kind of high viscosity mold glue and preparation method thereof |
| CN108359242A (en) * | 2018-02-24 | 2018-08-03 | 江苏燕园精英医疗科技有限公司 | A kind of transparent silicone rubber die material and preparation method |
| CN109439211A (en) * | 2018-11-01 | 2019-03-08 | 苏州泛普科技股份有限公司 | Touch control film high dielectric strength optical cement and preparation method thereof |
| CN109523842A (en) * | 2018-11-01 | 2019-03-26 | 苏州泛普科技股份有限公司 | Highly sensitive touch-control blackboard |
| CN109468026A (en) * | 2018-11-21 | 2019-03-15 | 芜湖春风新材料有限公司 | A kind of guarantor's mould agent coating and preparation method thereof |
| CN109749462A (en) * | 2019-01-07 | 2019-05-14 | 上海灼日新材料科技有限公司 | A kind of high-modulus silicone mold glue and preparation method thereof |
| CN110511571A (en) * | 2019-07-30 | 2019-11-29 | 浙江荣泰科技企业有限公司 | A kind of the stator winding end insulation system and processing method of generator |
| CN110511571B (en) * | 2019-07-30 | 2021-07-30 | 浙江荣泰科技企业有限公司 | Stator winding end insulation structure of generator and processing method |
| CN110499032A (en) * | 2019-08-28 | 2019-11-26 | 江西蓝星星火有机硅有限公司 | A kind of self-lubricating add-on type liquid silicon rubber and its preparation method and application |
| CN110499032B (en) * | 2019-08-28 | 2022-04-19 | 江西蓝星星火有机硅有限公司 | Self-lubricating addition type liquid silicone rubber and preparation method and application thereof |
| CN110643171A (en) * | 2019-10-19 | 2020-01-03 | 上海麦艺文化艺术设计有限公司 | Silica gel sculpture and preparation process thereof |
| CN111171579A (en) * | 2020-02-25 | 2020-05-19 | 江西蓝星星火有机硅有限公司 | Wear-resistant temperature-resistant self-lubricating silicone rubber and preparation method and application thereof |
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| CN113549330B (en) * | 2021-07-23 | 2022-07-26 | 东莞市德鸿家居用品有限公司 | High-strength easy-demolding mold silica gel and preparation method thereof |
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