CN107541073A - A kind of high-luster silicon rubber and its preparation technology - Google Patents
A kind of high-luster silicon rubber and its preparation technology Download PDFInfo
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Abstract
The invention provides a kind of high-luster silicon rubber, it is prepared by the raw material including following components：The parts by weight of silicon rubber 60~100, the parts by weight of white carbon 30~70, the parts by weight of constitution controller 2~8, the parts by weight of modifying agent 0.2~0.8, the parts by weight of crosslinking agent 0.05~0.2, the parts by weight of releasing agent 0.05~0.2 and the parts by weight of blue pigment 0.0001~0.003.A kind of high-luster silicon rubber and its preparation technology, silicone rubber mechanical performance is good, and glossiness is high, and manufacture craft is simple and environmentally-friendly.
Description
Technical field
The present invention relates to rubber materials, more particularly to a kind of high-luster silicon rubber and its preparation technology.
Background technology
Silicon rubber has excellent combination property, in aviation, aerospace, electric, electronics, electrical equipment, chemical industry, instrument, automobile
Deng industry and health care, daily life every field in obtain a wide range of applications.But relevant raising silastic product
The research of glossiness is very few, also not from processing conditions and formula factors to the glossiness of silicon rubber and the shadow of its mechanical behavior
Sound is studied, for example the combination or the selection of formula range that are formulated in the prior art are unreasonable, cause glossiness inadequate, mesh
It is preceding very high to the demand of the silica gel with high-luster in multiple fields, thus a kind of silica gel with high glaze of exploitation and
Its preparation technology has very high market application and economic value.
The content of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of high-luster silicon rubber and its prepares work
Skill, product good mechanical property, glossiness is high, and manufacture craft is simple and environmentally-friendly.
The invention provides a kind of high-luster silicon rubber, it is prepared by the raw material including following components：
Preferably, the silicon rubber is methyl vinyl silicone rubber.
Preferably, the constitution controller is hydroxy silicon oil, HMDS, diphenyl silanediol, dimethyl two
Methoxy silane, dimethyldiethoxysilane, aminomethyl phenyl diethoxy silane, tetramethyl ethylidene dioxy dimethylsilane
With the one or more in dimethyl silicone polymer.
Preferably, the modifying agent is polymethyl hydrogen siloxane.
Preferably, the crosslinking agent is multi-vinyl silicone oil.
Present invention also offers a kind of preparation technology of the high-luster silicon rubber described in above-mentioned technical proposal, including it is following
Step：
A) silicon rubber, constitution controller, crosslinking agent, releasing agent, blue pigment and white carbon be kneaded for the first time and pinched
Close, obtain elastomeric compound semi-finished product；
B) the elastomeric compound semi-finished product for obtaining step a) carry out second with modifying agent and are kneaded kneading, obtain high-luster silicon
Rubber.
Preferably, the temperature for being kneaded kneading described in step a) for the first time is 25 DEG C~60 DEG C, and the time is 2.0h~3.5h.
Preferably, the process of second of mixing kneading is specially described in step b)：
Under conditions of stirring, after elastomeric compound semi-finished product are warming up into 150 DEG C~160 DEG C, add modifying agent and be kneaded
30min~50min is mediated, after cooling, obtains high-luster silicon rubber.
Preferably, the process of the cooling is carried out under vacuumized conditions；The time vacuumized be 30min~
50min；The temperature of the cooling is 70 DEG C~90 DEG C.
Preferably, in addition to vulcanisation step：
The obtained high-luster silicon rubber of step b) and 2,5- dimethyl -2,5- di-t-butyl hexane peroxide are mixed,
Vulcanized, the high-luster silicon rubber after being vulcanized；
The mass ratio of the high-luster silicon rubber and 2,5- dimethyl -2,5- di-t-butyl hexane peroxides is 100：
(0.7~2)；
The temperature of the vulcanization is 160 DEG C~180 DEG C, and the time is 3min~8min.
High-luster silicon rubber provided by the invention, it can be widely applied to the neck such as various sheaths, Cake mould, sealing ring
Domain, the selection white carbon that specific surface area is big, particle diameter is small can improve the intensity of product, and filling effect is good, and product mechanical property is good, resistance
It is more excellent to fire performance；Constitution controller not only can effectively suppress the structuring of sizing material, moreover it is possible to improve the glossiness of product；Modifying agent
In contain a large amount of active hydrogens, reduction can be played, effectively to prevent impurity in sizing material from being oxidized so as to cause silicon rubber
Finished product xanthochromia；The dosage of blue pigment is adjusted on formula, the formula after improvement causes the product effect of silicon rubber
Substantially, gained silastic product no longer influences the color of sizing material because blue pigment is excessive.
Present invention also offers a kind of preparation technology of high-luster silicon rubber, and the constant temperature after heating is kneaded in technique
Time is adjusted, because at high temperature, the mobility of sizing material is more preferable, the melting efficiency under the stage is optimal, so suitably
Extension heating after constant temperature time, white carbon can be enable to possess in sizing material preferably dispersed, and make obtained silicon
Rubber will not disperse uneven because of white carbon and influence glossiness；It is adjusted in technique to vacuumizing the step of, to protect
Part small-molecule substance is stayed, enables it that there is good stripping result when making high-luster silastic product, so that
Sizing material surface will not influence smoothness of the surface because of torn edges problem, and product not only has preferable physical and mechanical properties, together
When can reduce bubble caused by sulfidation, improve the stability of vulcanizate.
Embodiment
Below in conjunction with the related description in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear
Chu, it is fully described by, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.
Based on the embodiment in the present invention, those of ordinary skill in the art are obtained all under the premise of creative work is not made
Other embodiment, belong to the scope of protection of the invention.
The invention provides a kind of high-luster silicon rubber, it is prepared by the raw material including following components：Silicon rubber 60
~100 parts by weight, the parts by weight of white carbon 30~70, the parts by weight of constitution controller 2~8, the parts by weight of modifying agent 0.2~0.8, crosslinking
The parts by weight of agent 0.05~0.2, the parts by weight of releasing agent 0.05~0.2 and the parts by weight of blue pigment 0.0001~0.003.
In the present invention, the silicon rubber is preferably methyl vinyl silicone rubber.The present invention is to the methyl ethylene silicon
The source of rubber is not particularly limited, using commercial goods well known to those skilled in the art.In the present invention, the first
Base vinylsiloxane rubber preferably use contents of ethylene for 0.08%~0.16% methyl vinyl silicone rubber, it is such as commercially available
110 methyl vinyl silicone rubbers.In the present invention, the high-luster silicon rubber includes the silicon rubber of 60~100 parts by weight, excellent
Elect 80 parts by weight as.
In the present invention, the white carbon is preferably precipitated silica.The present invention is to the source of the white carbon without spy
Different limitation, using commercial goods well known to those skilled in the art.In the present invention, the precipitated silica preferably uses
Specific surface area is 165m2/ g~210m2/ g precipitated silica；Its model includes commercially available T150, YX-811, YX813,928 He
TMG etc..In the present invention, the high-luster silicon rubber includes the white carbon of 30~70 parts by weight, preferably 50~60 weight
Part.
In the present invention, the constitution controller be preferably hydroxy silicon oil, HMDS, diphenyl silanediol,
Dimethyldimethoxysil,ne, dimethyldiethoxysilane, aminomethyl phenyl diethoxy silane, tetramethyl ethylidene dioxy two
One or more in methyl-monosilane and dimethyl silicone polymer, more preferably hydroxy silicon oil, dimethyldimethoxysil,ne and
One or more in dimethyldiethoxysilane.The present invention is not particularly limited to the source of the constitution controller, is adopted
With above-mentioned hydroxy silicon oil well known to those skilled in the art, HMDS, diphenyl silanediol, dimethylformamide dimethyl epoxide
Silane, dimethyldiethoxysilane, aminomethyl phenyl diethoxy silane, tetramethyl ethylidene dioxy dimethylsilane and poly- two
The commercial goods of methylsiloxane.In the present invention, the constitution controller not only can effectively suppress the structure of sizing material
Change, moreover it is possible to improve the glossiness of product.In the present invention, the high-luster silicon rubber includes the structure control of 2~8 parts by weight
Agent, preferably 4~6 parts by weight.
In the present invention, the modifying agent is preferably polymethyl hydrogen siloxane.The present invention does not have to the source of the modifying agent
Have it is specifically limited, using the commercial goods of above-mentioned polymethyl hydrogen siloxane well known to those skilled in the art.In the present invention
In, a large amount of active hydrogens are contained in the polymethyl hydrogen siloxane, reduction can be played, effectively to prevent the impurity in sizing material
It is oxidized so as to cause silicon rubber finished product xanthochromia.In the present invention, the high-luster silicon rubber includes 0.2~0.8 parts by weight
Modifying agent, preferably 0.2~0.6 parts by weight.
In the present invention, the crosslinking agent is preferably multi-vinyl silicone oil.The present invention does not have to the source of the crosslinking agent
It is specifically limited, using the commercial goods of above-mentioned multi-vinyl silicone oil well known to those skilled in the art.The present invention uses special
The multi-vinyl silicone oil for determining dosage coordinates the other components of specific dosage, can improve the mechanical strength of product silicon rubber.At this
In invention, the high-luster silicon rubber includes the crosslinking agent of 0.05~0.2 parts by weight, preferably 0.06~0.1 parts by weight.
In the present invention, the releasing agent be preferably laurate, stearic acid, zinc stearate, magnesium stearate, calcium stearate,
In one or more in aluminum stearate, zinc laurate and Magnesium dilaurate, more preferably zinc stearate, magnesium stearate and stearic acid
One or more.The present invention is not particularly limited to the source of the releasing agent, on well known to those skilled in the art
State the commercially available of laurate, stearic acid, zinc stearate, magnesium stearate, calcium stearate, aluminum stearate, zinc laurate and Magnesium dilaurate
Commodity.In the present invention, the high-luster silicon rubber includes the releasing agent of 0.05~0.2 parts by weight, preferably 0.1~
0.12 parts by weight.
In the present invention, the blue pigment is preferably the one or more in ultramarine, cobalt blue and phthalocyanine blue, preferably group
It is blue or green.The present invention is not particularly limited to the source of the blue pigment, using above-mentioned ultramarine well known to those skilled in the art, cobalt
Blue and phthalocyanine blue commercial goods.The present invention is adjusted on formula to the dosage of blue pigment, matching somebody with somebody after improvement
Side causes the product positive effect of silicon rubber, and gained silastic product no longer influences the color and luster of sizing material because blue pigment is excessive
Degree.In the present invention, the high-luster silicon rubber includes the blue pigment of 0.0001~0.003 parts by weight, and preferably 0.001
~0.003 parts by weight.
Present invention also offers a kind of preparation technology of the high-luster silicon rubber described in above-mentioned technical proposal, including it is following
Step：
A) silicon rubber, constitution controller, crosslinking agent, releasing agent, blue pigment and white carbon be kneaded for the first time and pinched
Close, obtain elastomeric compound semi-finished product；
B) the elastomeric compound semi-finished product for obtaining step a) carry out second with modifying agent and are kneaded kneading, obtain high-luster silicon
Rubber.
Silicon rubber, constitution controller, crosslinking agent, releasing agent, blue pigment and white carbon are carried out first by the present invention first
Secondary be kneaded is mediated, and obtains elastomeric compound semi-finished product.In the present invention, the silicon rubber, constitution controller, crosslinking agent, releasing agent, indigo plant
Color pigment and white carbon are identical with described in above-mentioned technical proposal, will not be repeated here.
The present invention carries out silicon rubber, constitution controller, crosslinking agent, releasing agent, blue pigment and white carbon mixed for the first time
Refining is mediated；The present invention is kneaded the equipment mediated to the first time and is not particularly limited, it is preferred to use those skilled in the art are ripe
The kneader known.In the present invention, it is preferably 25 DEG C~60 DEG C that first time, which is kneaded the temperature mediated, more preferably 30 DEG C~
40℃；The time that the first time is kneaded kneading is preferably 2.0h~3.5h, more preferably 3h~3.5h.The present invention is to described the
The pressure for being once kneaded kneading is not particularly limited, using normal pressure.
After obtaining elastomeric compound semi-finished product, obtained elastomeric compound semi-finished product are carried out second of mixing with modifying agent and pinched by the present invention
Close, obtain high-luster silicon rubber.In the present invention, the modifying agent is identical with described in above-mentioned technical proposal, herein not
Repeat again.
Obtained elastomeric compound semi-finished product and modifying agent are carried out second of mixing and mediated by the present invention；The present invention is to described first
The secondary equipment mediated that is kneaded is not particularly limited, it is preferred to use kneader well known to those skilled in the art.In the present invention, institute
Stating the process that second of mixing is mediated preferably is specially：
Under conditions of stirring, after elastomeric compound semi-finished product are warming up into 150 DEG C~160 DEG C, add modifying agent and be kneaded
30min~50min is mediated, after cooling, obtains high-luster silicon rubber.In the present invention, the speed of the stirring is preferably
30Hz~50Hz, more preferably 50Hz.
In the present invention, it is described elastomeric compound semi-finished product are warming up to 150 DEG C~160 DEG C after, add modifying agent be kneaded
Mediate 30min~50min；It is described to be kneaded the mixing kneading mediated and carried out under above-mentioned warming temperature under constant temperature, while keep stirring
Mix process.In the present invention, the time that the addition modifying agent carries out being kneaded kneading is preferably 30min~50min, more preferably
40min~45min.
Complete the addition modifying agent to carry out after being kneaded the process for mediating 30min~50min, product is dropped in the present invention
Temperature, obtain high-luster silicon rubber.In the present invention, the process of the cooling is preferably carried out under vacuumized conditions；It is described to take out
The time of vacuum is preferably 30min~50min, more preferably 30min~40min.In the present invention, the temperature of the cooling is excellent
Elect 70 DEG C~90 DEG C, more preferably 80 DEG C as.
After obtaining the high-luster silicon rubber, the present invention preferably also includes vulcanisation step：
Obtained high-luster silicon rubber and 2,5- dimethyl -2,5- di-t-butyl hexane peroxide are mixed, carry out sulphur
Change, the high-luster silicon rubber after being vulcanized.In the present invention, the high-luster silicon rubber and 2,5- dimethyl -2,5-
The mass ratio of di-t-butyl hexane peroxide is preferably 100：(0.7~2), more preferably 100：(1~1.5).In the present invention,
It is described to be preferably specially with the process that 2,5- dimethyl -2,5- di-t-butyl hexane peroxides mix by high-luster silicon rubber：
2,5- dimethyl -2,5- di-t-butyl hexane peroxides (DBPMH) are added in high-luster silicon rubber.This hair
The bright equipment to above-mentioned mixed process is not particularly limited, it is preferred to use mill well known to those skilled in the art, Neng Goubao
Card high-luster silicon rubber is well mixed with 2,5- dimethyl -2,5- di-t-butyl hexane peroxides.
After completing the mixed process, the present invention is vulcanized obtained mixture, the high-luster after being vulcanized
Silicon rubber.The present invention is not particularly limited to the equipment of the vulcanization, it is preferred to use vulcanizer well known to those skilled in the art.
In the present invention, the temperature of the vulcanization is preferably 160 DEG C~180 DEG C, more preferably 170 DEG C~175 DEG C；The vulcanization when
Between be preferably 3min~8min, more preferably 5min~6min.
The preparation method of the present invention is adjusted in technique to the constant temperature mixing time after heating, because in high temperature
Under, the mobility of sizing material is more preferable, and the melting efficiency under the stage is optimal, so the constant temperature time after appropriate extension heating, can
White carbon is possessed in sizing material preferably dispersed, and make obtained silicon rubber will not be because of the scattered inequality of white carbon
It is even and influence glossiness；It is adjusted in technique to vacuumizing the step of, with member-retaining portion small-molecule substance, is making it
Can have good stripping result during high-luster silastic product so that sizing material surface will not because of torn edges problem shadow
Smoothness of the surface is rung, product not only has preferable physical and mechanical properties, while can reduce bubble caused by sulfidation, carries
The stability of high-sulfurized glue.
For a further understanding of the present invention, the preferred embodiment of the invention is described with reference to embodiment, still
It should be appreciated that these descriptions are simply further explanation the features and advantages of the present invention, rather than to the claims in the present invention
Limitation.
Embodiment 1
A kind of preparation technology of high-luster silicon rubber, comprises the following steps：
(1) parts by weight of silicon rubber 60, the parts by weight of white carbon 30, the weight of dimethyldimethoxysil,ne 2 are added in kneader
Part, the parts by weight of multi-vinyl silicone oil 0.05, the parts by weight of zinc stearate 0.05 and the parts by weight of phthalocyanine blue 0.0001 are measured, are kneaded under normal pressure
Mediate, the temperature for being kneaded kneading is 25 DEG C, and the time for being kneaded kneading is 2.0h, obtains elastomeric compound semi-finished product；
(2) elastomeric compound semi-finished product obtained by step (1) are stirred in stirring is warming up to 150 DEG C under atmospheric pressure state in kneader
It is 30Hz to mix speed, after heating terminates, adds the parts by weight of polymethyl hydrogen siloxane 0.2, is then kneaded and mediates under constant temperature
30min, after kneading to be mixed terminates, cool, vacuumize 30min in temperature-fall period, wait to be cooled to 70 DEG C, produce high-luster silicon
Rubber；
(3) vulcanisation step, i.e.,：The high-luster silicon rubber of 100 parts by weight obtained by step (2) is taken, adds 0.7 parts by weight
2,5- dimethyl -2,5- di-t-butyl hexane peroxides (DBPMH), after being well mixed on a mill, sulphur is carried out with vulcanizer
Change, 160 DEG C, cure time 3min of curing temperature, finally give the high-luster silicon rubber after vulcanization.
Embodiment 2
A kind of preparation technology of high-luster silicon rubber, comprises the following steps：
(1) parts by weight of silicon rubber 80, the parts by weight of white carbon 60, the parts by weight of hydroxy silicon oil 4, more ethene are added in kneader
The parts by weight of base silicone oil 0.06, the parts by weight of zinc stearate 0.12 and the parts by weight of ultramarine agent 0.003, it is kneaded under normal pressure and mediates, mixing is pinched
The temperature of conjunction is 30 DEG C, and the time for being kneaded kneading is 3.5h, obtains elastomeric compound semi-finished product；
(2) elastomeric compound semi-finished product obtained by step (1) are stirred in stirring is warming up to 150 DEG C under atmospheric pressure state in kneader
It is 50Hz to mix speed, after heating terminates, adds the parts by weight of polymethyl hydrogen siloxane 0.2, is then kneaded and mediates under constant temperature
45min, after kneading to be mixed terminates, cool, vacuumize 30min in temperature-fall period, wait to be cooled to 80 DEG C, produce high-luster silicon
Rubber；
(3) vulcanisation step, i.e.,：The high-luster silicon rubber of 100 parts by weight obtained by step (2) is taken, adds the 2 of 1 parts by weight,
5- dimethyl -2,5- di-t-butyl hexane peroxide (DBPMH), after being well mixed on a mill, vulcanized with vulcanizer,
175 DEG C, cure time 5min of curing temperature, finally give the high-luster silicon rubber after vulcanization.
Embodiment 3
A kind of preparation technology of high-luster silicon rubber, comprises the following steps：
(1) parts by weight of silicon rubber 100, the parts by weight of white carbon 70, the weight of dimethyldiethoxysilane 8 are added in kneader
Part, the parts by weight of multi-vinyl silicone oil 0.2, the parts by weight of magnesium stearate 0.2 and the parts by weight of cobalt blue 0.003 are measured, is kneaded and mediates under normal pressure,
It is 60 DEG C to be kneaded the temperature mediated, and the time for being kneaded kneading is 3.5h, obtains elastomeric compound semi-finished product；
(2) elastomeric compound semi-finished product obtained by step (1) are stirred in stirring is warming up to 160 DEG C under atmospheric pressure state in kneader
It is 50Hz to mix speed, after heating terminates, adds the parts by weight of polymethyl hydrogen siloxane 0.8, is then kneaded and mediates under constant temperature
50min, after kneading to be mixed terminates, cool, vacuumize 50min in temperature-fall period, wait to be cooled to 90 DEG C, produce high-luster silicon
Rubber；
(3) vulcanisation step, i.e.,：The high-luster silicon rubber of 100 parts by weight obtained by step (2) is taken, adds the 2 of 2 parts by weight,
5- dimethyl -2,5- di-t-butyl hexane peroxide (DBPMH), after being well mixed on a mill, vulcanized with vulcanizer,
180 DEG C, cure time 8min of curing temperature, finally give the high-luster silicon rubber after vulcanization.
Embodiment 4
A kind of preparation technology of high-luster silicon rubber, comprises the following steps：
(1) parts by weight of silicon rubber 80, the parts by weight of white carbon 50, the weight of dimethyldiethoxysilane 6 are added in kneader
Part, the parts by weight of multi-vinyl silicone oil 0.1, the parts by weight of zinc stearate 0.1 and the parts by weight of ultramarine agent 0.001 are measured, is kneaded and pinches under normal pressure
Close, the temperature for being kneaded kneading is 40 DEG C, and the time for being kneaded kneading is 3.0h, obtains elastomeric compound semi-finished product；
(2) elastomeric compound semi-finished product obtained by step (1) are stirred in stirring is warming up to 155 DEG C under atmospheric pressure state in kneader
It is 40Hz to mix speed, after heating terminates, adds the parts by weight of polymethyl hydrogen siloxane 0.6, is then kneaded and mediates under constant temperature
40min, after kneading to be mixed terminates, cool, vacuumize 40min in temperature-fall period, wait to be cooled to 80 DEG C, produce high-luster silicon
Rubber；
(3) vulcanisation step, i.e.,：The high-luster silicon rubber of 100 parts by weight obtained by step (2) is taken, adds 1.5 parts by weight
2,5- dimethyl -2,5- di-t-butyl hexane peroxides (DBPMH), after being well mixed on a mill, sulphur is carried out with vulcanizer
Change, 180 DEG C, cure time 6min of curing temperature, finally give the high-luster silicon rubber after vulcanization.
Embodiment 5
A kind of preparation technology of high-luster silicon rubber, comprises the following steps：
(1) parts by weight of silicon rubber 100, the parts by weight of white carbon 30, the parts by weight of hydroxy silicon oil 8, more second are added in kneader
The parts by weight of alkenyl silicone oil 0.05, the parts by weight of stearic acid 0.2 and the parts by weight of ultramarine agent 0.003, it is kneaded under normal pressure and mediates, be kneaded and mediate
Temperature be 25 DEG C, the time for being kneaded kneading is 2.0h, obtains elastomeric compound semi-finished product；
(2) elastomeric compound semi-finished product obtained by step (1) are stirred in stirring is warming up to 160 DEG C under atmospheric pressure state in kneader
It is 50Hz to mix speed, after heating terminates, adds the parts by weight of polymethyl hydrogen siloxane 0.6, is then kneaded and mediates under constant temperature
45min, after kneading to be mixed terminates, cool, vacuumize 50min in temperature-fall period, wait to be cooled to 80 DEG C, produce high-luster silicon
Rubber；
(3) vulcanisation step, i.e.,：The high-luster silicon rubber of 100 parts by weight obtained by step (2) is taken, adds the 2 of 2 parts by weight,
5- dimethyl -2,5- di-t-butyl hexane peroxide (DBPMH), after being well mixed on a mill, vulcanized with vulcanizer,
180 DEG C, cure time 5min of curing temperature, finally give the high-luster silicon rubber after vulcanization.
Comparative example 1
Comparative example 1 uses the most of raw material and identical preparation method that high-luster silicon rubber is prepared in embodiment 2, no
With the content of ultramarine agent has adjusted in raw material, and specific raw material and method are as follows：
A kind of preparation technology of high-luster silicon rubber, comprises the following steps：
(1) parts by weight of silicon rubber 80, the parts by weight of white carbon 60, the parts by weight of hydroxy silicon oil 4, more ethene are added in kneader
The parts by weight of base silicone oil 0.06, the parts by weight of zinc stearate 0.12 and the parts by weight of ultramarine agent 0.005, it is kneaded under normal pressure and mediates, mixing is pinched
The temperature of conjunction is 30 DEG C, and the time for being kneaded kneading is 3.5h, obtains elastomeric compound semi-finished product；
(2) elastomeric compound semi-finished product obtained by step (1) are stirred in stirring is warming up to 150 DEG C under atmospheric pressure state in kneader
It is 50Hz to mix speed, after heating terminates, adds the parts by weight of polymethyl hydrogen siloxane 0.2, is then kneaded and mediates under constant temperature
45min, after kneading to be mixed terminates, cool, vacuumize 30min in temperature-fall period, wait to be cooled to 80 DEG C, produce high-luster silicon
Rubber；
(3) vulcanisation step, i.e.,：The high-luster silicon rubber of 100 parts by weight obtained by step (2) is taken, adds the 2 of 1 parts by weight,
5- dimethyl -2,5- di-t-butyl hexane peroxide (DBPMH), after being well mixed on a mill, vulcanized with vulcanizer,
175 DEG C, cure time 5min of curing temperature, finally give the high-luster silicon rubber after vulcanization.
Comparative example 2
Comparative example 2 uses in embodiment 2 and prepares the identical raw material of high-luster silicon rubber and essentially identical preparation side
Method, unlike, under constant temperature be kneaded kneading time be adjusted, specific method is as follows：
A kind of preparation technology of high-luster silicon rubber, comprises the following steps：
(1) parts by weight of silicon rubber 80, the parts by weight of white carbon 60, the parts by weight of hydroxy silicon oil 4, more ethene are added in kneader
The parts by weight of base silicone oil 0.06, the parts by weight of zinc stearate 0.12 and the parts by weight of ultramarine agent 0.003, it is kneaded under normal pressure and mediates, mixing is pinched
The temperature of conjunction is 30 DEG C, and the time for being kneaded kneading is 3.5h, obtains elastomeric compound semi-finished product；
(2) elastomeric compound semi-finished product obtained by step (1) are stirred in stirring is warming up to 150 DEG C under atmospheric pressure state in kneader
It is 50Hz to mix speed, after heating terminates, adds the parts by weight of polymethyl hydrogen siloxane 0.2, is then kneaded and mediates under constant temperature
25min, after kneading to be mixed terminates, cool, vacuumize 30min in temperature-fall period, wait to be cooled to 80 DEG C, produce high-luster silicon
Rubber；
(3) vulcanisation step, i.e.,：The high-luster silicon rubber of 100 parts by weight obtained by step (2) is taken, adds the 2 of 1 parts by weight,
5- dimethyl -2,5- di-t-butyl hexane peroxide (DBPMH), after being well mixed on a mill, vulcanized with vulcanizer,
175 DEG C, cure time 5min of curing temperature, finally give the high-luster silicon rubber after vulcanization.
Comparative example 3
Comparative example 3 uses in embodiment 2 and prepares the identical raw material of high-luster silicon rubber and essentially identical preparation side
Method, unlike, to cooling, the step of vacuumizing is adjusted, and specific method is as follows：
A kind of preparation technology of high-luster silicon rubber, comprises the following steps：
(1) parts by weight of silicon rubber 80, the parts by weight of white carbon 60, the parts by weight of hydroxy silicon oil 4, more ethene are added in kneader
The parts by weight of base silicone oil 0.06, the parts by weight of zinc stearate 0.12 and the parts by weight of ultramarine agent 0.003, it is kneaded under normal pressure and mediates, mixing is pinched
The temperature of conjunction is 30 DEG C, and the time for being kneaded kneading is 3.5h, obtains elastomeric compound semi-finished product；
(2) elastomeric compound semi-finished product obtained by step (1) are stirred in stirring is warming up to 150 DEG C under atmospheric pressure state in kneader
It is 50Hz to mix speed, after heating terminates, adds the parts by weight of polymethyl hydrogen siloxane 0.2, is then kneaded and mediates under constant temperature
45min, after kneading to be mixed terminates, 80 DEG C are cooled to, produces high-luster silicon rubber；
(3) vulcanisation step, i.e.,：The high-luster silicon rubber of 100 parts by weight obtained by step (2) is taken, adds the 2 of 1 parts by weight,
5- dimethyl -2,5- di-t-butyl hexane peroxide (DBPMH), after being well mixed on a mill, vulcanized with vulcanizer,
175 DEG C, cure time 5min of curing temperature, finally give the high-luster silicon rubber after vulcanization.
With reference to national standard GB/T 13891-2008 Test methods of specular gloss for decorative building materials, 60 ° of mirror image gloss
Assay method, to commercially available TN-2980H/Y silicon rubber, NE-9170 silicon rubber, the silicon rubber of gained and embodiment institute in comparative example
The silicon rubber of preparation carries out performance test, the results are shown in Table 1.
Silicon rubber test result obtained by silicon rubber obtained by 1 commercially available silicon rubber of table, comparative example and embodiment
As it can be seen from table 1 existing commercially available silicone rubber products, the research to raising silastic product glossiness is very few,
Also the influence not from processing conditions and formula factors to the glossiness of silicon rubber and its mechanical behavior is studied；Comparative example
1-3 is compared with embodiment 1-5, it is known that, the adjustment and processing step, the improvement of parameter for being formulated dosage can greatly improve silicon
The glossiness of rubber.
Therefore, high-luster silicon rubber of the invention, it can be widely applied to the neck such as various sheaths, Cake mould, sealing ring
Domain, the dosage of blue pigment is adjusted on formula, the formula after improvement causes the product positive effect of silicon rubber, institute
Obtain silastic product no longer influences the color of sizing material because blue pigment is excessive.
The constant temperature mixing time after heating is adjusted in technique, because at high temperature, the mobility of sizing material is more
Good, the melting efficiency under the stage is optimal, so the constant temperature time after appropriate extension heating, can enable white carbon in sizing material
In possess preferably dispersed, and obtained silicon rubber is not disperseed because of white carbon uneven and is influenceed glossiness；
The step of in technique to vacuumizing, is adjusted, and with member-retaining portion small-molecule substance, it is being made high-luster silicon rubber system
There can be good stripping result during product, so that sizing material surface will not influence smoothness of the surface because of torn edges problem,
Product not only has preferable physical and mechanical properties, while can reduce bubble caused by sulfidation, improves the stabilization of vulcanizate
Property.
The explanation of above example is only intended to help the method and its core concept for understanding the present invention.It should be pointed out that pair
For those skilled in the art, under the premise without departing from the principles of the invention, the present invention can also be carried out
Some improvement and modification, these are improved and modification is also fallen into the protection domain of the claims in the present invention.
Claims (10)
1. a kind of high-luster silicon rubber, is prepared by the raw material including following components：
2. high-luster silicon rubber according to claim 1, it is characterised in that the silicon rubber is methyl ethylene silicon rubber
Glue.
3. high-luster silicon rubber according to claim 1, it is characterised in that the constitution controller be hydroxy silicon oil,
HMDS, diphenyl silanediol, dimethyldimethoxysil,ne, dimethyldiethoxysilane, aminomethyl phenyl two
One or more in Ethoxysilane, tetramethyl ethylidene dioxy dimethylsilane and dimethyl silicone polymer.
4. high-luster silicon rubber according to claim 1, it is characterised in that the modifying agent is poly- methyl hydrogen silica
Alkane.
5. high-luster silicon rubber according to claim 1, it is characterised in that the crosslinking agent is multi-vinyl silicone oil.
6. a kind of preparation technology of the high-luster silicon rubber described in any one of Claims 1 to 5, comprises the following steps：
A) silicon rubber, constitution controller, crosslinking agent, releasing agent, blue pigment and white carbon be kneaded for the first time and mediated, obtained
To elastomeric compound semi-finished product；
B) the elastomeric compound semi-finished product for obtaining step a) carry out second with modifying agent and are kneaded kneading, obtain high-luster silicon rubber
Glue.
7. preparation technology according to claim 6, it is characterised in that be kneaded the temperature of kneading described in step a) for the first time
For 25 DEG C~60 DEG C, the time is 2.0h~3.5h.
8. preparation technology according to claim 6, it is characterised in that second of process for being kneaded kneading described in step b)
Specially：
Under conditions of stirring, after elastomeric compound semi-finished product are warming up into 150 DEG C~160 DEG C, add modifying agent and carry out mixing kneading
30min~50min, after cooling, obtain high-luster silicon rubber.
9. preparation technology according to claim 8, it is characterised in that the process of the cooling is entered under vacuumized conditions
OK；The time vacuumized is 30min~50min；The temperature of the cooling is 70 DEG C~90 DEG C.
10. according to the preparation technology described in any one of claim 6~9, it is characterised in that also including vulcanisation step：
The obtained high-luster silicon rubber of step b) and 2,5- dimethyl -2,5- di-t-butyl hexane peroxide are mixed, carried out
Vulcanization, the high-luster silicon rubber after being vulcanized；
The mass ratio of the high-luster silicon rubber and 2,5- dimethyl -2,5- di-t-butyl hexane peroxides is 100：(0.7~
2)；
The temperature of the vulcanization is 160 DEG C~180 DEG C, and the time is 3min~8min.
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