CN108250762A - A kind of high viscosity mold glue and preparation method thereof - Google Patents
A kind of high viscosity mold glue and preparation method thereof Download PDFInfo
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- CN108250762A CN108250762A CN201810052180.6A CN201810052180A CN108250762A CN 108250762 A CN108250762 A CN 108250762A CN 201810052180 A CN201810052180 A CN 201810052180A CN 108250762 A CN108250762 A CN 108250762A
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
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Abstract
The invention discloses a kind of high viscosity mold glues and preparation method thereof.The invention belongs to mold glue technical field, and including following components, the mass fraction of each component is：Viscosity is 460-550 parts of the vinyl-terminated silicone fluid of 20000MPas, 18-30 parts of high-vinyl silicone oil, 10-14 parts of water, 22-58 parts of silazane, 2-3 parts of vinyl list end socket, 140-220 parts of white carbon, 3-5 parts of hydroxyl, viscosity is 10-28 parts of the vinyl silicone oil of 5000MPas, viscosity is 60-220 parts of the vinyl silicone oil of 20000MPas, viscosity is 6-9 parts of 100MPas dimethicones, 0.3-0.9 part of catalyst, 30-90 parts of silicon oil of low hydrogen content, 0.03-0.2 part of acetylene cyclohexanol, viscosity is 5-18 parts of the vinyl silicone oil of 100000MPas.High viscosity mold glue of the present invention, with high mechanical property, greatly improve the overmolded number of mold glue and overmolded quality, the pouring molding of the materials such as unsaturated-resin, polyester resin, Glass Craft can be widely used in, it may also be used for the production of the refined duplicate such as precision die, crystal drilling.
Description
Technical field
The invention belongs to mold glue technical field, more particularly to a kind of high viscosity mold glue and preparation method thereof.
Background technology
The silicon rubber that can be used to do mold is referred to as mold glue.Before mold glue is found, the needs of a large amount of molds are same
Sample exists, and such as low-melting alloy, paraffin, gypsum, epoxy resin, unsaturated polyester resin and polyurethane are required when moulding by casting
Mold.Mold generally was made using metal or timber at that time, not only the process-cycle is long for this kind of mold, of high cost, and product
It is difficult to demould, bad product rate is high.The sixties in last century, organosilicon industry start formally to industrialize, silica gel since its is easy to operate, into
The advantages that this is low, and multiple mould understands emerges rapidly, largely replaces metal and timber, becomes one of important raw and processed materials of mold manufacturing,
It is widely used in leather embossing, the reproduction of the cultural relics, machinery mapping, plastic shaping, precision manufactureing and craftwork, building product etc.
In industry.
With the raising of people's living standard, daily necessities is seen everywhere the trace of artificial jewelry, such as clothes,
Shoes, knapsack, hair fastener, all kinds of ornaments etc. inlay or pasted all size, shape artificial diamond, it is also thus derivative
The mould manufacturing industry of manufacture of intraocular jewelry, silicon rubber is because poor adhesion, press back be good, easy mold release, thus such mold glue
Applied on a large scale in the production of artificial jewelry, and such mold glue poor mechanical property currently on the market, seriously affect mold
Overmolded number and overmolded quality.
Invention content
The purpose of the present invention is to provide a kind of solidfied material mechanical property it is good, mold overmolded number and overmolded matter can be improved
The high viscosity mold glue of amount.
In order to achieve the above-mentioned object of the invention, a kind of high viscosity mold glue of the present invention includes following components, the quality of each component
Number is：460-550 parts of the vinyl-terminated silicone fluid, 18-30 parts of high-vinyl silicone oil, water 10 that viscosity is 20000MPas-
14 parts, 22-58 parts of silazane, 2-3 parts of vinyl list end socket, 140-220 parts of white carbon, 3-5 parts of hydroxyl, viscosity be
10-28 parts of the vinyl silicone oil of 5000MPas, 60-220 parts of the vinyl silicone oil that viscosity is 20000MPas, viscosity are
6-9 parts of 100MPas dimethicones, 0.3-0.9 part of catalyst, 30-90 parts of silicon oil of low hydrogen content, acetylene cyclohexanol
0.03-0.2 part, 5-18 parts of the vinyl silicone oil that viscosity is 100000MPas.High viscosity mold glue group in the present invention
The vinyl silicone oil that viscosity is 100000MPas is especially added in point, can be adjusted using the vinyl silicone oil of 100000MPas
The viscosity of later stage preparation high viscosity mold glue is saved, the preparation of high viscosity mold glue is played an important role, high-vinyl silicone oil,
Ethylene list end socket, vinyl silicone oil play an important role the intensity and hardness of high viscosity mold glue, can improve high viscosity
The overmolded number of mold glue and overmolded quality.
Preferably, the catalyst selects PT5000 platinum catalysts.
Preferably, the viscosity of the high viscosity mold glue is not less than 150000MPas.
Preferably, the hydrogen content of the silicon oil of low hydrogen content is controlled between 0.3% -0.4%.
Another object of the present invention is to provide, a kind of solidfied material mechanical property is good, can improve mold overmolded number and turns over
The preparation method of the high viscosity mold glue of mould quality.
In order to achieve the above-mentioned object of the invention, a kind of preparation method of high viscosity mold glue of the present invention, includes the following steps：
(1) by vinyl-terminated silicone fluid 180-210 part, high ethylene silicone oil 18-30 part, water of the viscosity for 20000MPas
4-8 parts of 10-14 parts, silazane mixings, N is poured after stirring2, and put into 25-35 parts of white carbon and stir evenly, N2As inertia
Gas plays the role of burn-proof and explosion prevention；
(2) 4-8 parts of silazane is thrown, is stirred 2-3 minutes, throws after 2-3 parts of vinyl list end socket stirs evenly and throws white carbon again
25-35 parts stir evenly, and vinyl list end socket can adjust hardness；
(3) it throws 2-6 parts of silazane to stir evenly, then throw 15-25 parts of white carbon and stir evenly, silazane adjusts white carbon and end ethylene
The fusion of base silicone oil, white carbon can enhance viscosity, tear resistance and heat-resisting anti-aging property as reinforcing agent；
(4) it repeats step (3) 6 times, launches silazane and white carbon one side viscosity step by step and increasingly glue, the opposing party
Face can allow white carbon fully to be merged with vinyl-terminated silicone fluid；
(5) heating is stirred, after stirring is warming up to 140 DEG C, slowly puts into 20,000 40-60 parts of vinyl-terminated silicone fluid, after
Continuous stirring heating after being warming up to 160 DEG C, by chilled water modulation material temperature, ensures material temperature control in the range of 160 DEG C -170 DEG C
Lead to imitation frosted glass to prevent material temperature is excessively high；
(6) after stirring heats up 5 hours, N is closed2, vacuum is opened, ensures vacuum in more than 0.09MPa, and continue 2 small
When；
(7) stop vacuum, slowly put into viscosity as 240-280 parts of 20000MPas vinyl-terminated silicone fluids, hydroxyl 3-5
Part, after stirring evenly, discharge after being kept for vacuum 0.08MPA half an hour；
(8) material that step (7) comes out is ground and is split into two halves by grinder, and weighed, weight is respectively M parts and N
Part；
(9) it is 0.04M -0.06M parts of 5000MPas vinyl silicone oils, viscosity viscosity to be added in the material for being M parts in weight
For 0.1M -0.3M parts of 20000MPas vinyl silicone oils, viscosity be 0.01M -0.02M parts of 100MPas dimethicones,
0.001M -0.002M parts of catalyst, is stirred in planetary stirrer, and obtains A material with vacuum defoamation；
(10) it is 0.1N -0.2N parts of 20000MPas vinyl silicone oils, viscosity viscosity to be added in the material for being N parts in weight
For 0.02N -0.04N parts of 100000 vinyl silicone oil, 0.01N -0.02N parts of the dimethicone that viscosity is 100, low Silicon Containing Hydrogen
0.1N -0.2N parts oily, 0.0001N -0.0003N parts of acetylene cyclohexanol stirs, and obtained with vacuum defoamation in planetary stirrer
Obtain B material；
(11) the A material that step (9) and step (10) obtain are pressed 1 with B material:1 mixing, which stirs evenly, can obtain high viscosity mold
Glue.
Preferably, the stirring in the step (1), (2), (3), (4) stirs evenly speed control in 15r/min -25r/min
Between.On the one hand control can be sufficiently stirred stir evenly within this range, on the other hand prevent the too fast temperature rise mistake of mixing speed
Soon, react insufficient between each composition.
Preferably, the stirring heating in step (5), mixing speed are controlled in 40r/min -50r/min.Excessive velocities are held
Easily lead to the phenomenon that heating up too fast generation imitation frosted glass.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) high viscosity mold glue of the invention has better mechanical property, and it can be used repeatedly for mold, overmolded number and
Overmolded quality significantly improves；
(2) the high viscosity mold adhesiveness in the present invention can reach more than 150000MPas, hardness reach 35A-
45A, tensile strength reach 6-8MPa, and tear strength can widely be used in unsaturated tree between 25N/mm-35N/mm
The pouring molding of the materials such as fat, polyester resin, Glass Craft, it may also be used for the refined duplicate such as precision die, crystal drilling
Production.
Specific embodiment
With reference to embodiment, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate this
It invents rather than limits the scope of the invention, after the present invention has been read, those skilled in the art are various to the present invention's
The modification of equivalent form falls within the application range as defined in the appended claims.
Embodiment 1
A kind of high viscosity mold glue, including following components, the mass fraction of each component is：Viscosity is 20000MPas's
460 parts of vinyl-terminated silicone fluid, 18 parts of high-vinyl silicone oil, 10 parts of water, 22 parts of silazane, 2 parts of vinyl list end socket, white carbon
140 parts, 3 parts of hydroxyl, viscosity be 5000MPas 12.8 parts of vinyl silicone oil, viscosity be 20000MPas vinyl silicon
Oil 64 parts, viscosity for 6.4 parts of 100MPas dimethicones, 0.32 part of PT5000 platinum catalysts, 32 parts of silicon oil of low hydrogen content,
0.032 part of acetylene cyclohexanol, 6.4 parts of the vinyl silicone oil that viscosity is 100000MPas.
High viscosity mold glue is prepared using said components, is included the following steps：
(1) by vinyl-terminated silicone fluid 180 part, high ethylene silicone oil 18 part, water 10 part, silicon nitrogen of the viscosity for 20000MPas
4 parts of mixings of alkane, N is poured after stirring2, and put into 25 parts of white carbon and stir evenly, speed is stirred evenly as 20r/min；
(2) 4 parts of silazane is thrown, is stirred 2-3 minutes, 2 parts of throwing vinyl list end socket is thrown 25 parts of white carbon after stirring evenly and stirred again
It is even, speed is stirred evenly as 20r/min；
(3) it throws 2 parts of silazane to stir evenly, then throw 15 parts of white carbon and stir evenly, stirs evenly speed as 20r/min；(4) it repeats
Step (3) 6 times；
(5) stirring heating, after stirring is warming up to 140 DEG C, it is 20000MPas vinyl-terminated silicone fluids 40 slowly to put into viscosity
Part, continue stirring heating, after being warming up to 160 DEG C, by chilled water modulation material temperature, ensure material temperature control in 160 DEG C -170 DEG C models
In enclosing, speed is stirred evenly as 45r/min；
(6) after stirring heats up 5 hours, N is closed2, vacuum is opened, ensures vacuum in more than 0.09MPa, and continue 2 small
When；
(7) stop vacuum, slowly put into viscosity as 240 parts of 20000MPas vinyl-terminated silicone fluids, 3 parts of hydroxyl, stirring is equal
After even, discharge after being kept for vacuum 0.08MPA half an hour；
(8) by step (7) come out material grind and is split into two halves by grinder, weigh, weight be respectively 320 parts with
320 parts；
(9) it is 12.8 parts of 5000MPas vinyl silicone oils, viscosity to add in viscosity in first part of material that weight is 320 parts
It is 3.2 parts of 100MPas dimethicones, PT5000 platinum catalysts for 32 parts of 20000MPas vinyl silicone oils, viscosity
It 0.32 part, is stirred in planetary stirrer, and A material is obtained with vacuum defoamation；
(10) it is 32 parts of 20000MPas vinyl silicone oils, viscosity to add in viscosity in second part of material that weight is 320 parts
3.2 parts of dimethicone for being 100 for 6.4 parts of 100000 vinyl silicone oil, viscosity, 32 parts of silicon oil of low hydrogen content, acetylene cyclohexanol
It 0.032 part, is stirred in planetary stirrer, and B material is obtained with vacuum defoamation；
(11) the A material that step (9) and step (10) obtain are pressed 1 with B material:1 mixing, which stirs evenly, can obtain high viscosity mold
Glue.
Embodiment 2
A kind of high viscosity mold glue, including following components, the mass fraction of each component is：Viscosity is 20000MPas's
507 parts of vinyl-terminated silicone fluid, 24 parts of high-vinyl silicone oil, 12 parts of water, 40 parts of silazane, 2.2 parts of vinyl list end socket, white carbon
200 parts, 3.77 parts of hydroxyl, viscosity be 5000MPas vinyl silicone oil several pieces, viscosity be 20000MPas vinyl
Silicone oil several pieces, viscosity are 100MPas dimethicones several pieces, PT5000 platinum catalysts several pieces, silicon oil of low hydrogen content
Several pieces, acetylene cyclohexanol several pieces, the vinyl silicone oil that viscosity is 100000MPas.
High viscosity mold glue is prepared using said components, is included the following steps：
(1) by vinyl-terminated silicone fluid 197 part, high ethylene silicone oil 24 part, water 12 part, silicon nitrogen of the viscosity for 20000MPas
6 parts of mixings of alkane, N is poured after stirring2, and put into 30 parts of white carbon and stir evenly, speed is stirred evenly as 20r/min；
(2) 6 parts of silazane is thrown, is stirred 2-3 minutes, throws after 2.2 parts of vinyl list end socket stirs evenly and throws 30 parts of white carbon again
It stirs evenly, stirs evenly speed as 20r/min；
(3) it throws 4 parts of silazane to stir evenly, then throw 20 parts of white carbon and stir evenly, stirs evenly speed as 20r/min；
(4) step is repeated (3) 6 times；
(5) stirring heating after stirring is warming up to 140 DEG C, slowly puts into 20,000 50 parts of vinyl-terminated silicone fluid, continues stirring and rises
Temperature after being warming up to 160 DEG C, by chilled water modulation material temperature, ensures material temperature control in the range of 160 DEG C -170 DEG C, stirring stirs evenly
Speed is 45r/min；
(6) after stirring heats up 5 hours, N is closed2, vacuum is opened, ensures vacuum in more than 0.09MPa, and continue 2 small
When；
(7) stop vacuum, slowly put into viscosity as 260 parts of 20000MPas vinyl-terminated silicone fluids, 3.77 parts of hydroxyl, stir
After mixing uniformly, discharge after being kept for vacuum 0.08MPA half an hour；
(8) by step (7) come out material grind and is split into two halves by grinder, and weigh, weight be respectively 385 parts with
385 parts；
(9) viscosity is added in the material that first part of weight is 385 parts to be 20.405 parts of 5000MPas vinyl silicone oils, glue
It is 5.39 parts of 100MPas dimethicones, the catalysis of PT5000 platinums to spend for 77 parts of 20000MPas vinyl silicone oils, viscosity
0.65 part of agent, is stirred in planetary stirrer, and obtains A material with vacuum defoamation；
(10) added in weight is 385 parts second part of material viscosity be 42.35 parts of 20000MPas vinyl silicone oils,
5.39 parts of the dimethicone that viscosity is 11.55 parts of 100000 vinyl silicone oil, viscosity is 100,42.35 parts of silicon oil of low hydrogen content,
0.0847 part of acetylene cyclohexanol, is stirred in planetary stirrer, and obtains B material with vacuum defoamation；
(11) the A material that step (9) and step (10) obtain are pressed 1 with B material:1 mixing, which stirs evenly, can obtain high viscosity mold
Glue.
Embodiment 3
A kind of high viscosity mold glue, including following components, the mass fraction of each component is：Viscosity is 20000MPas's
550 parts of vinyl-terminated silicone fluid, 30 parts of high-vinyl silicone oil, 14 parts of water, 58 parts of silazane, 3 parts of vinyl list end socket, white carbon
220 parts, 5 parts of hydroxyl, viscosity be 5000MPas 25.8 parts of vinyl silicone oil, viscosity be 20000MPas vinyl silicon
215 parts of oil, viscosity are 17.2 parts of 100MPas dimethicones, 0.86 part of PT5000 platinum catalysts, silicon oil of low hydrogen content 86
Part, 17.2 parts of the vinyl silicone oil that 0.129 part of acetylene cyclohexanol, viscosity are 100000MPas.
High viscosity mold glue is prepared using said components, is included the following steps：
(1) by vinyl-terminated silicone fluid 210 part, high ethylene silicone oil 30 part, water 14 part, silicon nitrogen of the viscosity for 20000MPas
8 parts of mixings of alkane, N is poured after stirring2, and put into 35 parts of white carbon and stir evenly, speed is stirred evenly as 20r/min；
(2) 8 parts of silazane to be thrown, is stirred 3 minutes, 3 parts of throwing vinyl list end socket is thrown 35 parts of white carbon after stirring evenly and is stirred evenly again,
Speed is stirred evenly as 20r/min；
(3) it throws 6 parts of silazane to stir evenly, then throw 25 parts of white carbon and stir evenly, stirs evenly speed as 20r/min；(4) it repeats to walk
Suddenly (3) 6 times；
(5) heating is stirred, after stirring is warming up to 140 DEG C, slowly puts into the end-vinyl that viscosity is 20000MPas
60 parts of silicone oil continues stirring heating, after being warming up to 160 DEG C, by chilled water modulation material temperature, ensure material temperature control 160 DEG C-
In the range of 170 DEG C, speed is stirred evenly as 45r/min；
(6) after stirring heats up 5 hours, N is closed2, vacuum is opened, ensures vacuum in more than 0.09MPa, and continue 2 small
When；
(7) stop vacuum, slowly put into viscosity as 280 parts of 20000MPas vinyl-terminated silicone fluids, 5 parts of hydroxyl, stirring is equal
After even, discharge after being kept for vacuum 0.08MPA half an hour；
(8) by step (7) come out material grind and is split into two halves by grinder, and weigh, weight be respectively 430 parts with
430 parts；
(9) it is 25.8 parts of 5000MPas vinyl silicone oils, viscosity to add in viscosity in first part of material that weight is 430 parts
It is 8.6 parts of 100MPas dimethicones, PT5000 platinum catalysts for 129 parts of 20000MPas vinyl silicone oils, viscosity
It 0.86 part, is stirred in planetary stirrer, and A material is obtained with vacuum defoamation；
(10) it is 86 parts of 20000MPas vinyl silicone oils, viscosity to add in viscosity in second part of material that weight is 430 parts
8.6 parts of dimethicone for being 100MPas for 17.2 parts of 100000 vinyl silicone oil, viscosity, 86 parts of silicon oil of low hydrogen content, acetylene
0.129 part of cyclohexanol, is stirred in planetary stirrer, and obtains B material with vacuum defoamation；
(11) the A material that step (9) and step (10) obtain are pressed 1 with B material:1 mixing, which stirs evenly, can obtain high viscosity mold
Glue.
It is carried out for 1-3 pairs of viscosity of embodiment, hardness, tearing strength, tensile strength, break-draw rate and overmolded number
It measures, test result is as follows：
High viscosity mold adhesiveness high energy enough reaches more than 150000MPas as can be seen from the table, and hardness reaches
35A-45A, tensile strength reach 6-8MPa, and tearing strength is in 25N/mm-30N/mm, and overmolded number is at 30 times or more, fracture
Extensibility reaches more than 400%, and to sum up the present invention is that a kind of solidfied material mechanical property is strong, improves mold overmolded number and turn over
The high viscosity mold glue of mould quality.
Claims (7)
1. a kind of high viscosity mold glue, it is characterised in that：Including following components, the mass fraction of each component is：Viscosity is
460-550 parts of vinyl-terminated silicone fluid, 18-30 parts of high-vinyl silicone oil, 10-14 parts of water, the silazane of 20000MPas
22-58 parts, the second of 2-3 parts of vinyl list end socket, 140-220 parts of white carbon, 3-5 parts of hydroxyl, viscosity for 5000MPas
10-28 parts of alkenyl silicone oil, 60-220 parts of the vinyl silicone oil that viscosity is 20000MPas, viscosity are 100MPas dimethyl
6-9 parts of silicone oil, 0.3-0.9 part of catalyst, 30-90 parts of silicon oil of low hydrogen content, 0.03-0.2 part of acetylene cyclohexanol, viscosity are
5-18 parts of the vinyl silicone oil of 100000MPas.
2. a kind of high viscosity mold glue according to claim 1, it is characterised in that：The catalyst selects PT5000 platinums
Catalyst.
3. a kind of high viscosity mold glue according to claim 1, it is characterised in that：The viscosity of the high viscosity mold glue is not
Less than 150000MPas.
4. a kind of low viscosity mold glue according to claim 1, it is characterised in that：The hydrogen content control of the silicon oil of low hydrogen content
System is between 0.3% -0.4%.
5. according to the preparation method of any high viscosity mold glue of claim 1-4, it is characterised in that：Include the following steps：
(1) by viscosity be 180-210 parts of the vinyl-terminated silicone fluid of 20000MPas, high 18-30 parts of ethylene silicone oil, water 10-
4-8 parts of 14 parts, silazane mixings, N is poured after stirring2, and put into 25-35 parts of white carbon and stir evenly；
(2) throw 4-8 parts of silazane, stir 2-3 minutes, throw thrown again after 2-3 parts of vinyl list end socket stirs evenly white carbon 25-
35 parts stir evenly；
(3) 2-6 parts of silazane is thrown to stir evenly, then throw 15-25 parts of white carbon and stir evenly；
(4) step is repeated (3) 6 times；
(5) stirring heating is stirred after being warming up to 140 DEG C, and the vinyl-terminated silicone fluid 40 that slowly input viscosity is 20000MPas-
60 parts, continue stirring heating, after being warming up to 160 DEG C, by chilled water modulation material temperature, ensure material temperature control at 160 DEG C -170 DEG C
In the range of；
(6) after stirring heats up 5 hours, N is closed2, vacuum is opened, ensures vacuum in more than 0.09MPa, and for 2 hours；
(7) stop vacuum, slowly put into viscosity as 240-280 parts of 20000MPas vinyl-terminated silicone fluids, 3-5 parts of hydroxyl, stir
After mixing uniformly, discharge after being kept for vacuum 0.08MPA half an hour；
(8) material that step (7) comes out is ground and is split into two halves by grinder, and weighed, weight is respectively M parts and N parts；
(9) addition viscosity is 0.04M -0.06M parts of 5000MPas vinyl silicone oils in the material for being M parts in weight, viscosity is
0.1M -0.3M parts of 20000MPas vinyl silicone oils, viscosity are 0.01M -0.02M parts of 100MPas dimethicones, urge
0.001M -0.002M parts of agent, is stirred in planetary stirrer, and obtains A material with vacuum defoamation；
(10) addition viscosity is 0.1N -0.2N parts of 20000MPas vinyl silicone oils in the material for being N parts in weight, viscosity is
100000 0.02N -0.04N parts of vinyl silicone oils, 0.01N -0.02N parts of the dimethicone that viscosity is 100, silicon oil of low hydrogen content
0.1N -0.2N parts, 0.0001N -0.0003N parts of acetylene cyclohexanol stirs, and obtained with vacuum defoamation in planetary stirrer
B expects；
(11) the A material that step (9) and step (10) obtain are pressed 1 with B material:1 mixing, which stirs evenly, can obtain high viscosity mold glue.
6. a kind of preparation method of low viscosity mold glue according to claim 5, it is characterised in that：The step (1),
(2), the stirring in (3), (4) stirs evenly speed control between 15r/min -25r/min.
7. a kind of preparation method of low viscosity mold glue according to claim 5, it is characterised in that：Stirring in step (5)
Heating is mixed, mixing speed is controlled in 40r/min -50r/min.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113321934A (en) * | 2021-07-20 | 2021-08-31 | 惠州市永卓科技有限公司 | Special mould silica gel for model overturning of simulated historic building and preparation method thereof |
| CN114437549A (en) * | 2022-01-25 | 2022-05-06 | 合肥凯蒙新材料有限公司 | Double-component room-temperature curing silicone rubber ear impression material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113321934A (en) * | 2021-07-20 | 2021-08-31 | 惠州市永卓科技有限公司 | Special mould silica gel for model overturning of simulated historic building and preparation method thereof |
| CN114437549A (en) * | 2022-01-25 | 2022-05-06 | 合肥凯蒙新材料有限公司 | Double-component room-temperature curing silicone rubber ear impression material |
| CN114437549B (en) * | 2022-01-25 | 2023-06-20 | 合肥凯蒙新材料有限公司 | Double-component room-temperature-curing silicone rubber ear impression material |
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