CN108424652A - A kind of add-on type silica gel and the preparation method and application thereof - Google Patents
A kind of add-on type silica gel and the preparation method and application thereof Download PDFInfo
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- CN108424652A CN108424652A CN201810340136.5A CN201810340136A CN108424652A CN 108424652 A CN108424652 A CN 108424652A CN 201810340136 A CN201810340136 A CN 201810340136A CN 108424652 A CN108424652 A CN 108424652A
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- silica gel
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- type silica
- silicone oil
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
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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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- Manufacturing & Machinery (AREA)
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- Health & Medical Sciences (AREA)
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- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
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Abstract
The invention discloses a kind of add-on type silica gel and the preparation method and application thereof that can be used for slush mold silica gel and reprint mould, avoid the phenomenon that silica gel does not cure occur when the polyvinyl chloride epidermis surface making silica gel containing heavy metal pollution reprints model.Add-on type silica gel is grouped as by the group of following parts by weight：0.7 0.9 parts of 100 parts of the mixture of vinyl silicone oil and containing hydrogen silicone oil, 20~30 parts of vinyl MQ liquid silicone, 12~14 parts of gas-phase silica, 5~10 parts of viscosity modifier, 23 parts of platinum catalyst and inhibitor；Preparation method is under conditions of temperature is 23~25 DEG C, rotating speed is 2500r/min, to be stirred 5 minutes after mixing each component；And provide application of the add-on type silica gel in fascia slush mold silica gel reprints the making of mould.The add-on type silica gel of the present invention, curing rate is fast, and preparation method is simple, at low cost.
Description
Technical field
The invention belongs to technical fields prepared by add-on type silica gel, and in particular to a kind of add-on type silica gel and preparation method thereof
With application.
Background technology
Fascia slush mold is generally used to the production soft skin product of fascia, the making of slush mold
Include the making that silica gel reprints model in the process, its purpose is to will wrap up in the decorative pattern of skin model surface to carry out accurate duplication turn
It moves.In the manufacturing process that silica gel reprints model, makes in the polyvinyl chloride epidermis for wrapping up in skin model and such as contain N, P, S, the members such as Bi
Element contains lone pair electrons due to N in P, S, can be combined with the electronics in the d tracks of platinum element, form strong adsorption bond, lead
Platinum element and N, P, S is caused to form compound, physical form is caused to change.The phenomenon that generate platinum catalyst " poisoning " and
Platinum catalyst is set to fail.In addition, the outer-shell electron of the metallic elements such as Bi can also enter in the d tracks of platinum element, make d tracks
Interior hole reduces, to cause the failure of catalyst.Cause not cure at add-on type silica gel and decorative pattern dermal contact, to lead
It causes silica gel to reprint the failure of modelling, is found by many experiments, currently on the market the mold of each trade mark add-on type silicon
Glue can all generate platinum catalyst " poisoning " phenomenon, so oneself corresponding silica gel must be configured.
CN106221241A discloses a kind of medical dual composition addition type liquid silastic, mainly by the poly- silicon of vinyl
Oxygen alkane, hydrogen containing siloxane, coupling agent, gas-phase silica and inhibitor composition.This silica gel has the high grade of transparency, high mechanicalness
Energy.The processing performance and molding cycle of injecting fluid silicon rubber can be met；CN103102865A discloses a kind of for bonding
The silane coupling agent of addition-type silicon rubber and leather substance also discloses a kind of addition-type silicon rubber and the bonding side with leather substance
Method, key problem are to solve the problems, such as bonding.However, this silica gel silane coupling agent is applied directly to wrap up in skin with floral designs
Model surface, this method can influence the emulation rate of floral designs to a certain extent, and directly be also needed in surface spraying
The dosage of control silane coupling agent can all influence the solidification effect of silica gel if dosage is excessive or very few.CN105345963A discloses one
The production method that kind fascia slush mold silica gel reprints mould is in the spraying add-on type pretreatment of decorative pattern epidermis surface
Agent, this method can only be directed to containing the polyvinyl chloride epidermis for causing the constituent content of poisoning less.And this method is actually
Decorative pattern emulation rate is reduced, and the present invention will not also reduce decorative pattern emulation rate while ensureing that silica gel fully cures；
CN101208069A discloses a kind of hydrophilic solidifiable silicone impression material containing phosphorus compound, and application field is tooth
Section.The content of platinum catalyst is 1.6wt% in embodiment, in general, the content of the platinum catalyst of dental impression material is higher,
Curing rate is very fast, and the operating time is very short, and mixed viscosity is higher, and mobility is very poor, it is impossible to be used in area is larger to be warded off
Mould silica gel reprints the preparation process of mould, by testing repeatedly, considers polyvinyl chloride epidermis surface and there is poisoning element
Content, the factors such as operating time, flow effect, curing rate, solidification effect of silica gel, it is determined that can be suitable for making warding off
Mould silica gel reprints the silica gel preparation method and application conditions of mould.
Therefore, from the point of view of the manufacturing process of slush mold, it is entire mistake to the accurate duplication of floral designs that silica gel, which reprints mould,
Core controlling unit in journey.So develop it is a kind of can directly wrap up in skin model surface cast dual composition addition type mold
Silica gel is of great practical significance.
Invention content
The purpose of the invention is to avoid reprinting mould in the polyvinyl chloride epidermis surface making silica gel containing element pollution
Occur the phenomenon that silica gel does not cure when type, provides and can be used for slush mold silica gel and reprint add-on type silica gel of mould and preparation method thereof
With application.
To achieve the goals above, the present invention provides the following technical solutions：
A kind of add-on type silica gel, is grouped as by the group of following parts by weight：
100 parts of the mixture of vinyl silicone oil and containing hydrogen silicone oil, 20~30 parts of vinyl MQ liquid silicone, gas phase hard charcoal
Black 12~14 parts, 5~10 parts of viscosity modifier, 0.7-0.9 parts of 2~3 parts of platinum catalyst and inhibitor；
The mole ratio of vinyl in the molal quantity and vinyl silicone oil of si-h bond in the containing hydrogen silicone oil is 2.2
~2.4:1；
The viscosity modifier is linear polydimethylsiloxane-, and range of viscosities is 10~15mPa.s；
The platinum catalyst is the complex compound of platinum and divinyl dimethyl siloxane, and wherein platinum content is 20wt%；
The inhibitor is 3,7,11- trimethyl dodecyne -3- alcohol.
Further, the add-on type silica gel A is grouped as by the group of following parts by weight：
100 parts of the mixture of vinyl silicone oil and containing hydrogen silicone oil, 25 parts of vinyl MQ liquid silicone, gas-phase silica 13
0.8 part of part, 8 parts of viscosity modifier, 2.5 parts of platinum catalyst and inhibitor；
The mole ratio of vinyl in the molal quantity and vinyl silicone oil of si-h bond in the containing hydrogen silicone oil is
2.3:1；
The viscosity modifier is linear polydimethylsiloxane-, viscosity 12mPa.s.
The platinum catalyst is the complex compound of platinum and divinyl dimethyl siloxane, and wherein platinum content is 20wt%；
The inhibitor is 3,7,11- trimethyl dodecyne -3- alcohol.
Further, viscosity is 600~1000mPa.s after the mixing of the add-on type silica gel.
Further, viscosity is 800mPa.s after the mixing of the add-on type silica gel.
The preparation method of add-on type silica gel, includes the following steps：It is 23 in temperature after the component of above-mentioned parts by weight is mixed
~25 DEG C, rotating speed be 2500r/min under conditions of, stir 5 minutes.
Application of the add-on type silica gel in fascia slush mold silica gel reprints the making of mould, the application process packet
Include following steps：It is vacuumized after the add-on type silica gel is brushed stirring, is cast in the Dai Mu with floral designs and wraps up in Pi Mo
Type surface, is then cured.
Further, the whipping temp of the add-on type silica gel is 23~25 DEG C, and mixing time is no more than 6 minutes.
Further, the vaporization temperature of the add-on type silica gel is 23~25 DEG C, and pressure is -0.07MPa, is vacuumized
Time is no more than 3 minutes.
Further, the add-on type silica gel is cast for 23~25 DEG C of temperature, duration of pouring control 7 minutes it
It is interior.
Further, the solidification temperature of the add-on type silica gel is 23~25 DEG C, and hardening time is 20~30 minutes.
Compared with prior art the beneficial effects of the invention are as follows：
Add-on type silica gel provided by the invention contains vinyl double bond, the hydrogen silicone oil of use in the vinyl silicone oil of use
In contain si-h bond, the two carries out addition reaction by platinum catalyst, and vinyl MQ liquid silicone and gas-phase silica draw
Enter to improve the intensity of silica gel, and the mixed viscosity of silica gel is adjusted by dimethicone, it is ensured that the flowing of silica gel
Property, it is conducive to mold filling.Under conditions of high catalyst content, inhibitor, which is added, can ensure the silica gel mixed operating time.And
It is to ensure after platinum catalyst is failed by certain element influences to select the platinum catalyst of high-content, and remaining catalyst can
To ensure that the solidification of silica gel is smoothed out.It thereby may be ensured that the solidification effect of silica gel model is good.
Add-on type silica gel preparation method provided by the invention is simple, and at low cost, curing rate is fast, can effectively solve the problem that decorative pattern
The add-on type silica gel that there are problems that influencing of metallic element in epidermis cures, and the mode that one-step method may be used will be mixed
Silica gel is directly cast in polyvinyl chloride and wraps up in skin model surface, and the making of mould is reprinted suitable for fascia slush mold silica gel,
The silica gel of making reprints that mould solidification effect is good, and decorative pattern loss late is low.
Specific implementation mode
In order to make those skilled in the art more fully understand technical scheme of the present invention, below in conjunction with embodiment to this
Invention is further detailed.Agents useful for same is commercial product in embodiment, wherein is purchased from Guangzhou for wooden mold material
Perseverance new die Materials Co., Ltd of city, platinum catalyst are purchased from Beijing An Tepuna scientific ＆ trading Co., Ltd.s, are platinum and divinyl two
The complex compound of methylsiloxane, wherein platinum content are 20wt%.
Embodiment 1
By vinyl silicone oil and the containing hydrogen silicone oil mixture (molal quantity of the si-h bond in containing hydrogen silicone oil：In vinyl silicone oil
Vinyl molal quantity=2.3:1) 100 parts, 25 parts of vinyl MQ liquid silicone, 13 parts of gas-phase silica, viscosity-adjusting agent
8 parts, viscosity 12mPa.s of agent stirs 5 points after the 2.5 parts of mixing of 0.8 part of inhibitor and platinum catalyst under homogenizer
The rotating speed of clock, blender is 2500r/min, obtains the add-on type silica gel that viscosity is 800mPa.s.
Add-on type silica gel is taken, stirs 6 minutes at 25 DEG C, then -0.07mpa is vacuumized 3 minutes, is then cast in Dai Mu
Skin model surface is wrapped up in, the duration of pouring controlled within 6 minutes.
After the completion of operation, cure 25 minutes at 25 DEG C, the decorative pattern emulator after observation silica gel curing degree and demoulding.
Embodiment 2
By vinyl silicone oil and the containing hydrogen silicone oil mixture (molal quantity of the si-h bond in containing hydrogen silicone oil：In vinyl silicone oil
Vinyl molal quantity=2.2:1) 100 parts, 20 parts of vinyl MQ liquid silicone, 12 parts of gas-phase silica, viscosity-adjusting agent
5 parts, viscosity 10mPa.s of agent stirs 5 points after the 2 parts of mixing of 0.7 part of inhibitor and platinum catalyst under homogenizer
The rotating speed of clock, blender is 2500r/min, obtains the add-on type silica gel that viscosity is 600mPa.s.
Add-on type silica gel is taken, stirs 6 minutes at 24 DEG C, then -0.07mpa is vacuumized 2 minutes, is then cast in Dai Mu
Skin model surface is wrapped up in, the duration of pouring controlled within 6 minutes.
After the completion of operation, cure 30 minutes at 23 DEG C, the decorative pattern emulator after observation silica gel curing degree and demoulding.
Embodiment 3
By vinyl silicone oil and the containing hydrogen silicone oil mixture (molal quantity of the si-h bond in containing hydrogen silicone oil：In vinyl silicone oil
Vinyl molal quantity=2.4:1) 100 parts, 30 parts of vinyl MQ liquid silicone, 14 parts of gas-phase silica, viscosity-adjusting agent
10 parts, viscosity 15mPa.s of agent stirs 5 points after the 3 parts of mixing of 0.9 part of inhibitor and platinum catalyst under homogenizer
The rotating speed of clock, blender is 2500r/min, obtains the add-on type silica gel that viscosity is 1000mPa.s.
Add-on type silica gel is taken, stirs 6 minutes at 23 DEG C, then -0.07mpa is vacuumized 3 minutes, is then cast in Dai Mu
Skin model surface is wrapped up in, the duration of pouring controlled within 7 minutes.
After the completion of operation, cure 20 minutes at 24 DEG C, the decorative pattern emulator after observation silica gel curing degree and demoulding.
Comparative example 1
By vinyl silicone oil and the containing hydrogen silicone oil mixture (molal quantity of the si-h bond in containing hydrogen silicone oil：In vinyl silicone oil
Vinyl molal quantity=2.1:1) 100 parts, 35 parts of vinyl MQ liquid silicone, 15 parts of gas-phase silica, viscosity-adjusting agent
10 parts, viscosity 18mPa.s of agent stirs 5 after the 1.5 parts of mixing of 0.6 part of inhibitor and platinum catalyst under homogenizer
Minute, the rotating speed of blender is 2500r/min, obtains the add-on type silica gel that viscosity is 800mPa.s.
Add-on type silica gel is taken, stirs 6 minutes at 25 DEG C, then -0.07mpa is vacuumized 3 minutes, is then cast in Dai Mu
Skin model surface is wrapped up in, the duration of pouring controlled within 7 minutes.
After the completion of operation, cure 60 minutes at 25 DEG C, the decorative pattern emulator after observation silica gel curing degree and demoulding.
Comparative example 2
Using a kind of dual composition addition type soft silicon rubber disclosed in CN106221241A, wherein component A is by 60 parts
Vinyl polysiloxane, 7 parts of silane coupling agent, 25 parts of gas-phase silica, 0.8 part of platinum catalyst；B component is by ethylene
60 parts of based polysiloxane, 4 parts of silane coupling agent, 30 parts of gas-phase silica, 15 parts of low hydrogen containing siloxane, 0.3 part
Component A and component B are directly cast in and wrap up in skin model surface, wait for silica gel curing and demolding by inhibitor after mixing.Observe silicon
Decorative pattern emulator after adhesive curing degree and demoulding.
Examples 1 to 3 and comparative example 1~2 are obtained into the silica gel curing degree and decorative pattern emulator that silica gel reprints mould
Experiment effect is compared, and the results are shown in Table 2.
2 experiment effect information table of table
| Experimental program | Silica gel curing degree | Decorative pattern emulator |
| Embodiment 1 | It is fully cured | 1 grade |
| Embodiment 2 | It is fully cured | 1 grade |
| Embodiment 3 | It is fully cured | 1 grade |
| Comparative example 1 | Boundary layer does not cure | - |
| Comparative example 2 | Boundary layer does not cure | - |
Remarks：Decorative pattern emulator is divided into 1 grade, 2 grades, 3 grades of three ranks, wherein 1 grade of emulation rate is 95% or more, 2
The emulation rate of grade is 85%~95%, and 3 grades of emulation rate is less than 85%."-" in table is no emulation rate.
Above certain exemplary embodiments that the present invention is only described by way of explanation, undoubtedly, for ability
The those of ordinary skill in domain without departing from the spirit and scope of the present invention can be with a variety of different modes to institute
The embodiment of description is modified.Therefore, above-described embodiment and description are regarded as illustrative in nature, and should not be construed as to this hair
The limitation of bright claims.
Claims (10)
1. a kind of add-on type silica gel, which is characterized in that be grouped as by the group of following parts by weight：
100 parts of the mixture of vinyl silicone oil and containing hydrogen silicone oil, 20~30 parts of vinyl MQ liquid silicone, gas-phase silica 12
~14 parts, 5~10 parts of viscosity modifier, 0.7-0.9 parts of 2~3 parts of platinum catalyst and inhibitor；
The mole ratio of vinyl in the molal quantity and vinyl silicone oil of si-h bond in the containing hydrogen silicone oil be 2.2~
2.4:1；
The viscosity modifier is linear polydimethylsiloxane-, and range of viscosities is 10~15mPa.s；
The platinum catalyst is the complex compound of platinum and divinyl dimethyl siloxane, and wherein platinum content is 20wt%；
The inhibitor is 3,7,11- trimethyl dodecyne -3- alcohol.
2. add-on type silica gel as described in claim 1, which is characterized in that the add-on type silica gel A is by following parts by weight
Group is grouped as：
100 parts of the mixture of vinyl silicone oil and containing hydrogen silicone oil, 25 parts of vinyl MQ liquid silicone, 13 parts of gas-phase silica,
0.8 part of 8 parts of viscosity modifier, 2.5 parts of platinum catalyst and inhibitor；
The mole ratio of vinyl in the molal quantity and vinyl silicone oil of si-h bond in the containing hydrogen silicone oil is 2.3:1；
The viscosity modifier is linear polydimethylsiloxane-, viscosity 12mPa.s；
The platinum catalyst is the complex compound of platinum and divinyl dimethyl siloxane, and wherein platinum content is 20wt%；
The inhibitor is 3,7,11- trimethyl dodecyne -3- alcohol.
3. add-on type silica gel as described in claim 1, which is characterized in that viscosity is after the mixing of the add-on type silica gel
600~1000mPa.s.
4. add-on type silica gel as claimed in claim 3, which is characterized in that viscosity is after the mixing of the add-on type silica gel
800mPa.s。
5. the preparation method of add-on type silica gel as described in claim 1, which is characterized in that include the following steps：By claim 1
After the component mixing of the parts by weight, under conditions of temperature is 23~25 DEG C, rotating speed is 2500r/min, stir 5 minutes.
6. application of the add-on type silica gel as described in claim 1 in fascia slush mold silica gel reprints the making of mould,
It is characterized in that, the application process includes the following steps：It vacuumizes, is cast in after the add-on type silica gel is brushed stirring
Dai Mu with floral designs wraps up in skin model surface, is then cured.
7. application of the add-on type silica gel as claimed in claim 6 in fascia slush mold silica gel reprints the making of mould,
It is characterized in that, the whipping temp of the add-on type silica gel is 23~25 DEG C, mixing time is no more than 6 minutes.
8. application of the add-on type silica gel as claimed in claim 6 in fascia slush mold silica gel reprints the making of mould,
It is characterized in that, the vaporization temperature of the add-on type silica gel is 23~25 DEG C, pressure is -0.07MPa, and the pumpdown time is not
More than 3 minutes.
9. application of the add-on type silica gel as claimed in claim 6 in fascia slush mold silica gel reprints the making of mould,
It is characterized in that, the add-on type silica gel is cast for 23~25 DEG C of temperature, the duration of pouring controlled within 7 minutes.
10. application of the add-on type silica gel as claimed in claim 6 in fascia slush mold silica gel reprints the making of mould,
It is characterized in that, the solidification temperature of the add-on type silica gel is 23~25 DEG C, hardening time is 20~30 minutes.
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| CN109777117A (en) * | 2018-12-18 | 2019-05-21 | 吉林大学 | A kind of add-on type silica gel for turning over fine decorative pattern mold processed, preparation method and applications |
| CN111251526A (en) * | 2020-01-17 | 2020-06-09 | 深圳市宝利实业发展有限公司 | Liquid silica gel forming method |
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| CN108424652B (en) | 2020-10-02 |
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