CN106280487A - A kind of mold glue fluid silicone rubber and preparation method thereof - Google Patents
A kind of mold glue fluid silicone rubber and preparation method thereof Download PDFInfo
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- CN106280487A CN106280487A CN201610715743.6A CN201610715743A CN106280487A CN 106280487 A CN106280487 A CN 106280487A CN 201610715743 A CN201610715743 A CN 201610715743A CN 106280487 A CN106280487 A CN 106280487A
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- silicone oil
- silicone rubber
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- mold glue
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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
- 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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- 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
- C08L2205/05—Polymer mixtures characterised by other features containing polymer components which can react with one another
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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
- C08L2312/00—Crosslinking
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Abstract
The invention discloses a kind of mold glue fluid silicone rubber and preparation method thereof, with vinyl silicone oil, containing hydrogen silicone oil, white carbon, release agent as raw material, according to Si H:Si Vi mol ratio be 1:15～10:1, white carbon accounts for total mass ratio 5%～60%, release agent accounts for total mass ratio 0.1%～5% mix homogeneously, be subsequently adding platinum catalyst and inhibitor mixed uniformly after be prepared from.Silicone rubber prepared by the present invention disclosure satisfy that the mobility before the sulfuration possessed needed for mold glue, row's bubble property, requirement of strength when applying after sulfuration, from model energy and service life.
Description
Technical field
The present invention relates to a kind of mold glue silicone rubber, the preparation method of a kind of mold glue fluid silicone rubber.
Background technology
There is before fluid silicone rubber sulfuration the mobile performance of low viscosity, shear shinning, facilitate process operation；Have after sulfuration
The performances such as the transparency of excellence, high intensity, weather resisteant are good, can meet various performances required when making mould.Silicone mold institute
The moulding material of contact is generally polyurethane, epoxy resin etc., and these materials are due to the physico-chemical property of self, in curing molding mistake
Cheng Zhonghui damages die surface, makes die surface coarse, causes goods to be deteriorated from mould difficulty, product's dimensional precision, overmolded number of times
Reduce, have a strong impact on die life.Thus, under ensureing certain strength character, improve the pass in mold use life-span
Key is the adhesion strength reducing die surface with goods.
Summary of the invention
It is an object of the invention to provide a kind of mold glue fluid silicone rubber and preparation method thereof, reduce goods and mould
Between adhesion strength, with improve mould overmolded number of times, improve die life.
For achieving the above object, the technical solution used in the present invention is:
A kind of mold glue fluid silicone rubber, with vinyl silicone oil, containing hydrogen silicone oil, white carbon, release agent as raw material, according to
Si-H:Si-Vi mol ratio is 1:15～10:1, white carbon accounts for total mass ratio 5%～60%, release agent accounts for total mass ratio 0.1%
～5% mix homogeneously, be subsequently adding platinum catalyst and inhibitor mixed uniformly after be prepared from.
The structural formula of described containing hydrogen silicone oil is Me2R1SiO(Me2SiO)a(MeHSiO)b(MeR2SiO)cSiR1Me2, in formula
Me is methyl, and a is the positive integer of 3～700, and b is the positive integer of 3～600, and c is the integer of 0～1000, and meets 0≤c/ (a+b
+ c)≤0.99, R1 is Me or H, and R2 is Me or phenyl.
The structural formula of described vinyl silicon is Me2R3SiO(Me2SiO)d(MeViSiO)e(MeR4SiO)fSiR3Me2, in formula
Vi is vinyl, and Me is methyl, and d is the positive integer of 3～1500, and e is the positive integer of 3～600, and f is the integer of 0～1500, and
Meeting 0≤f/ (d+e+f)≤0.99, R3 is Vi or Me, and R4 is Ph phenyl.
Described white carbon is fume colloidal silica or precipitated silica, through the commercial white carbon that auxiliary agent processes.
Described release agent is that alkyl containing hydrogen silicone oil is mixed homogeneously with dimethicone 1:50～20:1 in mass ratio.
In described release agent, alkyl containing hydrogen silicone oil is to be CH by containing hydrogen silicone oil with meeting structural formula2=CH (CH)gCH3One
Plant or several prepared at solvent reaction, wherein 3≤g≤15, and be positive integer.
Preparing containing hydrogen silicone oil used by alkyl containing hydrogen silicone oil for meeting structure is Me2R5SiO(Me2SiO)h(MeHSiO)i
(MeR6SiO)jSiR5Me2One or more, wherein R5 be H, R6 be phenyl, Me is methyl, 0≤h≤500,0≤i≤500,
0≤j≤300, and h, i, j be integer.
The structural formula of described dimethicone is Me3SiO(Me2SiO)kSiMe3, Me is methyl, k be 5～3000 the most whole
Number.
Described alkyl containing hydrogen silicone oil structural formula is Me2R7SiO(Me2SiO)l(MeR8SiO)m(MeR9SiO)nSiR10Me2,
In formula, Me is methyl, and RR7, R8, R9, R10 are H, Me or C6～C18In straight chained alkyl, and R7, R8, R9, R10 at least one be
C6～C18Straight chained alkyl, in R7, R8, R9, R10 at least one be H, in formula, l is the positive integer of 1～1500, and l is 1～1500
Positive integer, m is the positive integer of 1～1000.
The preparation method of a kind of mold glue fluid silicone rubber, proportionally by vinyl silicone oil, containing hydrogen silicone oil, Linesless charcoal
Black, release agent mixing, and stir 15～180 minutes mix homogeneously, adds inhibitor, platinum catalyst, room temperature in vacuo deaeration 5～
40 minutes, then stand and obtain product in 5～30 minutes.
Beneficial effect: compared with prior art, adds alkyl containing hydrogen silicone oil, wherein alkyl containing hydrogen silicone oil in the present invention
Si-H has been bonded fixation with main chain medium vinyl, and alkyl moves to surface and plays isolation together with the dimethicone of addition
The effect of goods and mould, thus obtain excellence from mould performance, improve overmolded number of times, improve die life.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention will be further described.
Embodiment 1
It is Me by 80g structure2HSiO(Me2SiO)100(MeHSiO)40SiHMe2It is placed in 250ml there-necked flask, adds
50g isopropanol solvent, drips a Pt catalyst, when system temperature rises to 60 degrees Celsius, slow with constant pressure funnel
The dropping positive laurylene of 1.35g, after isothermal reaction 1.5h, evacuation removes solvent, obtains alkyl containing hydrogen silicone oil.
It is Me by above-mentioned prepared alkyl containing hydrogen silicone oil and structural formula3SiO(Me2SiO)50SiMe3Dimethicone mixes in proportion
Close, obtain fluid silicone rubber release agent.
Embodiment 2
It is Me by 500.0g structure2ViSiO(Me2SiO)250SiViMe2Vinyl silicone oil is placed in kneader, is slowly added to
500.0g white carbon, being slow added into 500.0g structure after kneading uniformly is Me2ViSiO(Me2SiO)250SiViMe2Vinyl silicon
Oil, vacuum kneading was transferred in planetary stirrer after 2 hours, added release agent (alkyl containing hydrogen silicone oil and dimethyl-silicon oil
Amount ratio is 3:7) 46.7g, wherein alkyl containing hydrogen silicone oil is prepared by embodiment 1, and dimethicone structural formula is Me3SiO
(Me2SiO)50SiMe3；Adding 12.3g structural formula is Me3SiO(Me2SiO)10(MeHSiO)30SiMe3Containing hydrogen silicone oil, 0.3g suppress
Agent, 1.6gPt catalyst stir and can be prepared by.
The die drawn intensity made of this glue is 6.0MPa, tearing strength is 25.2kN/m, and hardness is 42, for epoxy
Resin has extraordinary from mould, and is obviously improved relative to being not added with release agent formula overmolded number of times.
Embodiment 3
It is Me by 500.0g structure2ViSiO(Me2SiO)350SiViMe2Vinyl silicone oil is placed in kneader, is slowly added to
500.0g white carbon, being slow added into 500.0g structure after kneading uniformly is Me2ViSiO(Me2SiO)350SiViMe2Vinyl silicon
Oil, vacuum kneading was transferred in planetary stirrer after 2 hours.Add release agent (alkyl containing hydrogen silicone oil and dimethyl-silicon oil quality
Ratio is 4:6) 30.7g, wherein alkyl containing hydrogen silicone oil is prepared by embodiment 1, and dimethicone structural formula is Me3SiO
(Me2SiO)50SiMe3；Adding 6.3g structural formula is Me3SiO(Me2SiO)10(MeHSiO)40SiMe3Containing hydrogen silicone oil, 0.3g suppress
Agent, 1.6gPt catalyst stir and can be prepared by.
The die drawn intensity made of this glue is 5.5MPa, tearing strength is about 23.6kN/m, and hardness is 40, for ring
Epoxy resins has extraordinary from mould, and is obviously improved relative to being not added with release agent formula overmolded number of times.
Embodiment 4
It is Me by 500.0g structure2ViSiO(Me2SiO)550SiViMe2Vinyl silicone oil is placed in kneader, is slowly added to
500.0g white carbon, being slow added into 500.0g structure after kneading uniformly is Me2ViSiO(Me2SiO)550SiViMe2Vinyl silicon
Oil, vacuum kneading was transferred in planetary stirrer after 2 hours, added release agent (alkyl containing hydrogen silicone oil and dimethyl-silicon oil quality
Ratio is 4:6) 30.7g, wherein alkyl containing hydrogen silicone oil is prepared by embodiment 1, and dimethicone structural formula is Me3SiO
(Me2SiO)30SiMe3.Adding 4.0g structural formula after stirring is Me3SiO(Me2SiO)10(MeHSiO)40SiMe3Silicon Containing Hydrogen
Oil, 0.3g inhibitor, 1.6gPt catalyst stir and can be prepared by.
The die drawn intensity made of this glue is 4.5MPa, tearing strength is 19.4kN/m, and hardness is 38, for epoxy
Resin has preferable from mould, and is obviously improved relative to being not added with release agent formula overmolded number of times.
The above is only the preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a mold glue fluid silicone rubber, it is characterised in that: with vinyl silicone oil, containing hydrogen silicone oil, white carbon, release agent be
Raw material, according to Si-H:Si-Vi mol ratio be 1:15～10:1, white carbon accounts for total mass ratio 5%～60%, release agent accounts for total matter
Amount ratio 0.1%～5% mix homogeneously, be subsequently adding platinum catalyst and inhibitor mixed uniform after be prepared from.
2. mold glue fluid silicone rubber as claimed in claim 1, it is characterised in that: the structural formula of described containing hydrogen silicone oil is
Me2R1SiO(Me2SiO)a(MeHSiO)b(MeR2SiO)cSiR1Me2, in formula, Me is methyl, and a is the positive integer of 3～700, and b is 3
～the positive integer of 600, c is the integer of 0～1000, and meets 0≤c/ (a+b+c)≤0.99, and R1 is Me or H, and R2 is Me or benzene
Base.
3. mold glue fluid silicone rubber as claimed in claim 1, it is characterised in that: the structural formula of described vinyl silicon is
Me2R3SiO(Me2SiO)d(MeViSiO)e(MeR4SiO)fSiR3Me2, in formula, Vi is vinyl, and Me is methyl, and d is 3～1500
Positive integer, e is the positive integer of 3～600, and f is the integer of 0～1500, and meets 0≤f/ (d+e+f)≤0.99, R3 be Vi or
Me, R4 are Ph phenyl.
4. mold glue fluid silicone rubber as claimed in claim 1, it is characterised in that: described white carbon is fume colloidal silica
Or precipitated silica, through the commercial white carbon that auxiliary agent processes.
5. mold glue fluid silicone rubber as claimed in claim 1, it is characterised in that: described release agent is alkyl containing hydrogen silicone oil
Mix homogeneously with dimethicone 1:50～20:1 in mass ratio.
6. mold glue fluid silicone rubber as claimed in claim 5, it is characterised in that: in described release agent, alkyl Silicon Containing Hydrogen
Oil is to be CH by containing hydrogen silicone oil with meeting structural formula2=CH (CH)gCH3One or more solvent reaction prepare, wherein 3≤g
≤ 15, and be positive integer.
7. mold glue fluid silicone rubber as claimed in claim 6, it is characterised in that: prepare used by alkyl containing hydrogen silicone oil hydrogeneous
Silicone oil is Me for meeting structure2R5SiO(Me2SiO)h(MeHSiO)i(MeR6SiO)jSiR5Me2One or more, wherein R5
Being phenyl for H, R6, Me is that methyl, 0≤h≤500,0≤i≤500,0≤j≤300, and h, i, j are integer.
8. mold glue fluid silicone rubber as claimed in claim 5, it is characterised in that: the structural formula of described dimethicone is
Me3SiO(Me2SiO)kSiMe3, Me is methyl, and k is the positive integer of 5～3000.
9. mold glue fluid silicone rubber as claimed in claim 5, it is characterised in that: described alkyl containing hydrogen silicone oil structural formula is
Me2R7SiO(Me2SiO)l(MeR8SiO)m(MeR9SiO)nSiR10Me2, in formula, Me is methyl, and RR7, R8, R9, R10 are H, Me
Or C6～C18In straight chained alkyl, and R7, R8, R9, R10 at least one be C6～C18Straight chained alkyl, in R7, R8, R9, R10 extremely
Rare one is H, and in formula, l is the positive integer of 1～1500, and l is the positive integer of 1～1500, and m is the positive integer of 1～1000.
10. one kind as arbitrary in claim 1～9 as described in the preparation method of mold glue fluid silicone rubber, it is characterised in that: press
According to ratio by vinyl silicone oil, containing hydrogen silicone oil, white carbon, release agent mixing, and stir 15～180 minutes mix homogeneously, then add
Enter inhibitor, platinum catalyst, room temperature in vacuo deaeration 5～40 minutes, then stand and obtain product in 5～30 minutes.
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| CN201610715743.6A CN106280487A (en) | 2016-08-24 | 2016-08-24 | A kind of mold glue fluid silicone rubber and preparation method thereof |
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| CN201610715743.6A CN106280487A (en) | 2016-08-24 | 2016-08-24 | A kind of mold glue fluid silicone rubber and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112194900A (en) * | 2020-10-12 | 2021-01-08 | 合肥坤擎机械科技有限公司 | Silicon rubber mold for integral molding of composite skirt and preparation method thereof |
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| CN112194900A (en) * | 2020-10-12 | 2021-01-08 | 合肥坤擎机械科技有限公司 | Silicon rubber mold for integral molding of composite skirt and preparation method thereof |
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Application publication date: 20170104 |