CN110218454A - A kind of room temperature vulcanized liquid silicone rubber of anti creepage trace and preparation method thereof - Google Patents
A kind of room temperature vulcanized liquid silicone rubber of anti creepage trace and preparation method thereof Download PDFInfo
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- CN110218454A CN110218454A CN201810175313.9A CN201810175313A CN110218454A CN 110218454 A CN110218454 A CN 110218454A CN 201810175313 A CN201810175313 A CN 201810175313A CN 110218454 A CN110218454 A CN 110218454A
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- 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
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Abstract
The invention discloses room temperature vulcanized liquid silicone rubbers of a kind of anti creepage trace and preparation method thereof, component A and B component is used to be made in mass ratio for the mixing of the ratio of 1:1, the preparation of liquid silastic can be realized using common process means, such as blender stirring, practical operation is simple.It is prepared respectively using dimethyl silicone polymer, silicon-dioxide powdery, aluminium hydroxide and other additives containing vinyl as raw material in two components, obtained liquid silastic vulcanizes 6~8 hours at 25 DEG C or so can be obtained silicone elastomer, its anti creepage trace is up to 1A4.5 grades and has good mobility and excellent electric property, can be widely used for the fields such as the manufacture, repairing and sealing of electric power electric product.
Description
Technical field
The present invention is a kind of room temperature vulcanized liquid silicone rubber and preparation method thereof of anti creepage trace, and in particular to a kind of leakage
Electricity plays trace and reaches 1A4.5 room temperature vulcanized liquid silicone rubber and preparation method thereof, belongs to high molecular material and Electric insulation material is handed over
Pitch technical field.
Background technique
Silastic material relies on its good high-low temperature resistant and Weather performance, excellent electrical insulation capability and hydrophobicity
Can, it has been widely used in the manufacture of the apparatus insulated component such as electric power electric.Electric power electric liquid silastic belongs to high score
The field of new materials that sub- material and the big subject of Electric insulation material two intersect to form, to continuous enhancing China's electric power electric equipment system
It makes and is of great significance with the core competitiveness of organosilicon industry and the capability of sustainable development.It is known that transporting outdoors for a long time
Capable silastic material must have good electrical insulating property and anti creepage trace performance, can just prevent due to dust, sleet or
Flashover and electrical breakdown accident that the factors such as thunder and lightning occur in silastic surface and the security and stability for influencing equipment operation；Simultaneously also
Must have good mobility and process industrial art performance, construct convenient for outdoor operations.Currently, fast with domestic electrical industry
Widened trend year by year is also presented in speed development, the application scale of Related product therewith.
A kind of high-performance anti creepage trace add-on type liquid silicon rubber of existing patent document CN106543734A(and its preparation
Method, 2017.03.29) it discloses a kind of composition of raw materials group and is divided into 100 parts of vinyl silicone oil, 30~60 parts of white carbon black, Silicon Containing Hydrogen
1~10 part of oil, 2~6 parts of amido-containing acid ester base silane, 0.15~2 part of platinum catalyst, 1- acetenyl -1- cyclohexanol 0.004~
The liquid silastic of 0.03 part of composition, amido-containing acid ester base silane and platinum catalyst in recipe ingredient form collaboration effect
Answer so that liquid silastic creepage trace reaches 1A4.5 grades, due to contain in the composition of raw materials amido-containing acid ester base silane and
Therefore the ingredients such as 1- acetenyl -1- cyclohexanol are unfavorable for the short vulcanization reaction of liquid silastic at room temperature, lead to
It often needs to be heated at high temperature just make liquid silastic complete cure.
The anti creepage trace agent and preparation method thereof of existing patent document CN103694709A(add-on type liquid silicon rubber and
It discloses using 2014.04.02) using the silane compound containing alkenyl and urea groups, is closed under organic titanate catalyst action
At liquid silastic creepage trace additive, which can significantly improve the tracking of add-on type liquid silicon rubber
Energy.But the nitrogen content of ureido silane can significantly affect the curing rate of sizing material and synthesis process can generate noxious material, limit
Its large-scale application in liquid silastic.
From document above it is found that reaching 1A4.5 grades there is presently no patent literature report anti creepage trace and can be in room
Liquid silastic vulcanized under the conditions of temperature and preparation method thereof.
Summary of the invention
The purpose of the present invention is to provide a kind of room temperature vulcanized liquid silicone rubbers of anti creepage trace, using component A and B group
Part is made in mass ratio for the ratio mixing of 1:1, respectively with silicon-dioxide powdery and the poly- diformazan containing vinyl in two components
Radical siloxane is as base rubber, then being aided with other additives is that auxiliary material is prepared, and obtained liquid silastic is at 25 DEG C or so
Vulcanization can be obtained silicone elastomer for 6~8 hours, and anti creepage trace is up to 1A4.5 grades and has good mobility and excellent
Different electric property can be widely used for the fields such as the manufacture, repairing and sealing of electric power electric product.
Another object of the present invention is to provide a kind of preparation method of the room temperature vulcanized liquid silicone rubber of anti creepage trace,
The preparation of silicon rubber can be realized using common process means such as blender stirring etc., practical operation is simple.In addition, former by formula
The appropriate selection of material, liquid silastic, which can also meet 25 DEG C or so vulcanizations, can be obtained silicone elastomer in 6~8 hours, especially
Suitable for the rapid construction under open-air conditions.
The present invention is achieved through the following technical solutions: a kind of room temperature vulcanized liquid silicone rubber of anti creepage trace, by quality
Number meter, including following composition of raw materials:
Component A: 100 parts of base rubbers, 10~30 parts of fillers, 11~40 parts of diluents, 0.2~0.7 part of platinum catalyst；
B component: 100 parts of base rubbers, 20~60 parts of diluents, 1~10 part of crosslinking agent, 0.2~0.7 part of inhibitor,
In the component A and B component, base rubber includes according to the mass fraction: 100 parts of viscosity are 3000~8000mPa.s containing second
The dimethyl silicone polymer of alkenyl and 50~60 parts of silicon-dioxide powderies.
In the component A, filler is that liquid compound containing platinum, aluminium hydroxide and viscosity are 500mPa.s containing ethylene
The dimethyl silicone polymer of base mixture obtained under high temperature, high vacuum condition.
In the filler, the quality of liquid compound containing platinum, aluminium hydroxide, dimethyl silicone polymer containing vinyl
Than controlling in 1~10:30~100:30~100.
In the component A, platinum catalyst is the complex of chloroplatinic acid and vinylsiloxane.
In the component A and B component, diluent is viscosity in poly dimethyl silicon of the 3000~8000mPa.s containing vinyl
Oxygen alkane.
In the B component, the hydrogen content of crosslinking agent is 0.5~0.8%, and viscosity is 30~100mPa.s.
In the B component, inhibitor is poly- divinyl tetramethyl disiloxane or tetravinyl tetramethyl cyclotetrasiloxane silicon oxygen
Any one in alkane or two kinds of mixtures formed.
A kind of preparation method of the room temperature vulcanized liquid silicone rubber of anti creepage trace, it is characterised in that: the following steps are included:
A, base rubber is prepared, 50~60 parts of silicon-dioxide powderies are added in 100 parts of dimethyl silicone polymers containing vinyl, to two
Silica powder after mixing evenly, is warming up to 150 DEG C, and vacuum degree >=0.08MPa persistently stirs 3~5h, obtains base rubber；
B, component A is prepared, 100 parts of base rubber, 10~30 parts of filler, 11~40 parts of diluent, 0.2~0.7 part of platinum catalyst are taken
It sequentially adds in blender, is stirred 1h at room temperature, component A is made；
C, base rubber B is prepared, takes 100 parts of base rubber, 20~60 parts of diluent, 1~10 part of crosslinking agent, 0.2~0.7 part of inhibitor successively
It is added in blender, is stirred 1h at room temperature, B component is made；
D, silicone elastomer is prepared, by B component made from component A made from step b and step c according to the ratio of mass ratio 1:1
After mixing, vulcanize 6~8 hours can be obtained silicone elastomer at room temperature to example.
Compared with prior art, the present invention have the following advantages that and the utility model has the advantages that
(1) in inventive formulation, filler uses liquid compound containing platinum, aluminium hydroxide and viscosity containing for 500mPa.s
The dimethyl silicone polymer of vinyl carries out blending processing, and technical process is simply controllable, high temperature (120 DEG C) and high vacuum (>=
Under the conditions of 0.09MPa), three kinds of raw materials are chemically reacted, and are participated in without coupling agent and toxic solvent, can avoid harmful by-products
Generation.
(2) present invention in the blending process, the mass ratio of platinum and aluminium hydroxide be 1~10:30~100 ratio under,
By the synergistic effect of platinum and aluminium hydroxide, on the one hand, it is big to polysiloxanes that the presence of proper proportion platinum is able to suppress galvanic corrosion damage
The degradation of strand；On the other hand, the aluminium hydroxide of proper proportion can significantly reduce high voltage in silastic surface electric discharge institute
The heat of generation, both sides synergistic effect can significantly inhibit high voltage and damage to the galvanic corrosion of silicon rubber, ensure that silicon rubber can
Reach 1A4.5 grades of creepage trace.
(3) in inventive formulation, in component A be added with 0.2~0.7 part of platinum catalyst, due in entire formula system not
Containing the substance for making Pt catalyst poisoning and vinyl-based inhibitor is used, ensure that liquid silastic can be at 25 DEG C or so
Silicone elastomer can be obtained for 6~8 hours in vulcanization, mitigates dependence of the sulfidation to environment temperature, is particularly suitable for open air
Under the conditions of rapid construction.
(4) liquid silastic prepared by the present invention has good mobility, can be poured by manual stir mixing, hand
A variety of processing method moldings such as the injection of work glue gun and air driven pump injection, it is simple and quick.The resistance to electric leakage of silicon rubber after vulcanization
It plays trace and reaches 1A4.5 grades and excellent electric properties, can be widely used for the fields such as the manufacture, repairing and sealing of electric power electric product.
Specific embodiment
The present invention is described in further detail below with reference to embodiment, embodiments of the present invention are not limited thereto.
Embodiment 1:
The present embodiment proposes a kind of room temperature vulcanized liquid silicone rubber of anti creepage trace, according to the mass fraction, including following original
Material formula:
Component A: 100 parts of base rubbers, 10 parts of fillers, 11 parts of diluents, 0.2 part of platinum catalyst.
B component: 100 parts of base rubbers, 20 parts of diluents, 1 part of crosslinking agent, 0.2 part of inhibitor.
The base rubber that above-mentioned component A and B component are selected includes according to the mass fraction: 100 parts of viscosity are 3000mPa.s containing second
The dimethyl silicone polymer of alkenyl and 50 parts of silicon-dioxide powderies.
Embodiment 2:
The present embodiment proposes a kind of room temperature vulcanized liquid silicone rubber of anti creepage trace, according to the mass fraction, including following original
Material formula:
Component A: 100 parts of base rubbers, 30 parts of fillers, 40 parts of diluents, 0.7 part of platinum catalyst.
B component: 100 parts of base rubbers, 60 parts of diluents, 10 parts of crosslinking agents, 0.7 part of inhibitor.
The base rubber that above-mentioned component A and B component are selected includes according to the mass fraction: 100 parts of viscosity are 8000mPa.s containing second
The dimethyl silicone polymer of alkenyl and 60 parts of silicon-dioxide powderies.
In above-mentioned component A, filler is that liquid compound containing platinum, aluminium hydroxide and viscosity are 500mPa.s containing ethylene
The dimethyl silicone polymer of base mixture obtained under high temperature, high vacuum condition.Wherein, liquid compound containing platinum, hydrogen-oxygen
Change aluminium, the mass ratio of dimethyl silicone polymer containing vinyl is controlled in 1:30:30.
Embodiment 3:
The present embodiment proposes a kind of room temperature vulcanized liquid silicone rubber of anti creepage trace, according to the mass fraction, including following original
Material formula:
Component A: 100 parts of base rubbers, 20 parts of fillers, 25 parts of diluents, 0.5 part of platinum catalyst.
B component: 100 parts of base rubbers, 40 parts of diluents, 5 parts of crosslinking agents, 0.6 part of inhibitor.
The base rubber that above-mentioned component A and B component are selected includes according to the mass fraction: 100 parts of viscosity are 6000mPa.s containing second
The dimethyl silicone polymer of alkenyl and 55 parts of silicon-dioxide powderies.
In above-mentioned component A, filler is that liquid compound containing platinum, aluminium hydroxide and viscosity are 500mPa.s containing ethylene
The dimethyl silicone polymer of base mixture obtained under high temperature, high vacuum condition.Wherein, liquid compound containing platinum, hydrogen-oxygen
Change aluminium, the mass ratio of dimethyl silicone polymer containing vinyl is controlled in 10:100:100.
Embodiment 4:
The present embodiment proposes a kind of room temperature vulcanized liquid silicone rubber of anti creepage trace, according to the mass fraction, including following original
Material formula:
Component A: 100 parts of base rubbers, 15 parts of fillers, 30 parts of diluents, 0.5 part of platinum catalyst.
B component: 100 parts of base rubbers, 45 parts of diluents, 4 parts of crosslinking agents, 0.5 part of inhibitor.
The base rubber that above-mentioned component A and B component are selected includes according to the mass fraction: 100 parts of viscosity are 4000mPa.s containing second
The dimethyl silicone polymer of alkenyl and 50 parts of silicon-dioxide powderies.
In above-mentioned component A, filler is that liquid compound containing platinum, aluminium hydroxide and viscosity are 500mPa.s containing ethylene
The dimethyl silicone polymer of base mixture obtained under the conditions of high temperature (120 DEG C) and high vacuum (>=0.09MPa), wherein liquid
Body shape compound containing platinum, aluminium hydroxide, dimethyl silicone polymer containing vinyl mass ratio control in 5:60:70；Platinum catalysis
Agent is the complex of chloroplatinic acid and vinylsiloxane.
In above-mentioned component A and B component, diluent is dimethyl silicone polymer containing vinyl of the viscosity in 3000mPa.s.
Embodiment 5:
The present embodiment proposes a kind of room temperature vulcanized liquid silicone rubber of anti creepage trace, according to the mass fraction, including following original
Material formula:
Component A: 100 parts of base rubbers, 22 parts of fillers, 30 parts of diluents, 0.3 part of platinum catalyst.
B component: 100 parts of base rubbers, 44 parts of diluents, 7 parts of crosslinking agents, 0.6 part of inhibitor.
The base rubber that above-mentioned component A and B component are selected includes according to the mass fraction: 100 parts of viscosity are 5000mPa.s containing second
The dimethyl silicone polymer of alkenyl and 60 parts of silicon-dioxide powderies.
In above-mentioned component A, filler is that liquid compound containing platinum, aluminium hydroxide and viscosity are 500mPa.s containing ethylene
The dimethyl silicone polymer of base mixture obtained under the conditions of high temperature (120 DEG C) and high vacuum (>=0.09MPa), wherein liquid
Body shape compound containing platinum, aluminium hydroxide, dimethyl silicone polymer containing vinyl mass ratio control in 3:80:55；Platinum catalysis
Agent is the complex of chloroplatinic acid and vinylsiloxane.
In above-mentioned component A and B component, diluent is viscosity in dimethyl silicone polymer of the 8000mPa.s containing vinyl.
Embodiment 6:
The present embodiment proposes a kind of room temperature vulcanized liquid silicone rubber of anti creepage trace, according to the mass fraction, including following original
Material formula:
Component A: 100 parts of base rubbers, 20 parts of fillers, 35 parts of diluents, 0.6 part of platinum catalyst.
B component: 100 parts of base rubbers, 40 parts of diluents, 5 parts of crosslinking agents, 0.3 part of inhibitor.
The base rubber that above-mentioned component A and B component are selected includes according to the mass fraction: 100 parts of viscosity are 7000mPa.s containing second
The dimethyl silicone polymer of alkenyl and 55 parts of silicon-dioxide powderies.
In above-mentioned component A, filler is that liquid compound containing platinum, aluminium hydroxide and viscosity are 500mPa.s containing ethylene
The dimethyl silicone polymer of base mixture obtained under the conditions of high temperature (120 DEG C) and high vacuum (>=0.09MPa), wherein liquid
Body shape compound containing platinum, aluminium hydroxide, dimethyl silicone polymer containing vinyl mass ratio control in 8:48:55；Diluent
For viscosity 5000mPa.s the dimethyl silicone polymer containing vinyl；Platinum catalyst is chloroplatinic acid and vinylsiloxane
Complex.
In above-mentioned B component, diluent is dimethyl silicone polymer containing vinyl of the viscosity in 5000mPa.s；Crosslinking agent
Hydrogen content be 0.5%, viscosity 100mPa.s；Inhibitor is poly- divinyl tetramethyl disiloxane.
Embodiment 7:
The present embodiment proposes a kind of room temperature vulcanized liquid silicone rubber of anti creepage trace, according to the mass fraction, including following original
Material formula:
Component A: 100 parts of base rubbers, 28 parts of fillers, 35 parts of diluents, 0.6 part of platinum catalyst.
B component: 100 parts of base rubbers, 55 parts of diluents, 9 parts of crosslinking agents, 0.7 part of inhibitor.
The base rubber that above-mentioned component A and B component are selected includes according to the mass fraction: 100 parts of viscosity are 5000mPa.s containing second
The dimethyl silicone polymer of alkenyl and 50 parts of silicon-dioxide powderies.
In above-mentioned component A, filler is that liquid compound containing platinum, aluminium hydroxide and viscosity are 500mPa.s containing ethylene
The dimethyl silicone polymer of base mixture obtained under the conditions of high temperature (120 DEG C) and high vacuum (>=0.09MPa), wherein liquid
Body shape compound containing platinum, aluminium hydroxide, dimethyl silicone polymer containing vinyl mass ratio control in 7:80:68；Diluent
For viscosity 4000mPa.s the dimethyl silicone polymer containing vinyl；Platinum catalyst is chloroplatinic acid and vinylsiloxane
Complex.
In above-mentioned B component, diluent is dimethyl silicone polymer containing vinyl of the viscosity in 4000mPa.s；Crosslinking agent
Hydrogen content be 0.8%, viscosity 30mPa.s；Inhibitor is tetravinyl tetramethyl-ring tetrasiloxane.
Embodiment 8:
The present embodiment proposes a kind of room temperature vulcanized liquid silicone rubber of anti creepage trace, according to the mass fraction, including following original
Material formula:
Component A: 100 parts of base rubbers, 18 parts of fillers, 15 parts of diluents, 0.3 part of platinum catalyst.
B component: 100 parts of base rubbers, 33 parts of diluents, 5 parts of crosslinking agents, 0.4 part of inhibitor.
The base rubber that above-mentioned component A and B component are selected includes according to the mass fraction: 100 parts of viscosity are 3600mPa.s containing second
The dimethyl silicone polymer of alkenyl and 58 parts of silicon-dioxide powderies.
In above-mentioned component A, filler is that liquid compound containing platinum, aluminium hydroxide and viscosity are 500mPa.s containing ethylene
The dimethyl silicone polymer of base mixture obtained under the conditions of high temperature (120 DEG C) and high vacuum (>=0.09MPa), wherein liquid
Body shape compound containing platinum, aluminium hydroxide, dimethyl silicone polymer containing vinyl mass ratio control in 2:50:55；Diluent
For viscosity 4200mPa.s the dimethyl silicone polymer containing vinyl；Platinum catalyst is chloroplatinic acid and vinylsiloxane
Complex.
In above-mentioned B component, diluent is dimethyl silicone polymer containing vinyl of the viscosity in 4200mPa.s；Crosslinking agent
Hydrogen content be 0.6%, viscosity 80mPa.s；Inhibitor is poly- divinyl tetramethyl disiloxane and tetravinyl tetramethyl
The mixture of cyclotetrasiloxane composition.
Embodiment 9:
The present embodiment proposes a kind of room temperature vulcanized liquid silicone rubber of anti creepage trace, according to the mass fraction, including following original
Material formula:
Component A: 100 parts of base rubbers, 25 parts of fillers, 20 parts of diluents, 0.5 part of platinum catalyst.
B component: 100 parts of base rubbers, 40 parts of diluents, 5 parts of crosslinking agents, 0.5 part of inhibitor.
The base rubber that above-mentioned component A and B component are selected includes according to the mass fraction: 100 parts of viscosity are 5500mPa.s containing second
The dimethyl silicone polymer of alkenyl and 54 parts of silicon-dioxide powderies.
In above-mentioned component A, filler is that liquid compound containing platinum, aluminium hydroxide and viscosity are 500mPa.s containing ethylene
The dimethyl silicone polymer of base mixture obtained under the conditions of high temperature (120 DEG C) and high vacuum (>=0.09MPa), wherein liquid
Body shape compound containing platinum, aluminium hydroxide, dimethyl silicone polymer containing vinyl mass ratio control in 6:65:55；Diluent
For viscosity 6500mPa.s the dimethyl silicone polymer containing vinyl；Platinum catalyst is chloroplatinic acid and vinylsiloxane
Complex.
In above-mentioned B component, diluent is dimethyl silicone polymer containing vinyl of the viscosity in 6500mPa.s；Crosslinking agent
Hydrogen content be 0.7%, viscosity 65mPa.s；Inhibitor is poly- divinyl tetramethyl disiloxane and tetravinyl tetramethyl
The mixture of cyclotetrasiloxane composition.
Embodiment 10:
The present embodiment proposes a kind of preparation side of room temperature vulcanized liquid silicone rubber for anti creepage trace described in embodiment 1
Method, comprising the following steps:
A, base rubber is prepared, 50 parts of silicon-dioxide powderies are added in 100 parts of dimethyl silicone polymers containing vinyl, to titanium dioxide
After silicon powder is evenly dispersed, stirring is warming up to 150 DEG C, and vacuum degree >=0.08MPa persistently stirs 3h, and base rubber is made.
B, prepare component A, take 100 parts of base rubber, 10 parts of filler, 11 parts of diluent, 0.2 part of platinum catalyst sequentially add and stir
It mixes in machine, is stirred 1h at room temperature, component A is made.
C, prepare B component, take 100 parts of base rubber, 20 parts of diluent, 1 part of crosslinking agent, 0.2 part of inhibitor sequentially add stirring
In machine, it is stirred 1h at room temperature, B component is made.
D, silicone elastomer is prepared, by B component made from component A made from step b and step c according to mass ratio 1:1
Ratio after mixing, vulcanizing at 25 DEG C or so can be obtained silicone elastomer in 8 hours.
Embodiment 11:
The present embodiment proposes a kind of preparation side of room temperature vulcanized liquid silicone rubber for anti creepage trace described in embodiment 6
Method, comprising the following steps:
A, base rubber is prepared, 55 parts of dioxies are added in the dimethyl silicone polymer containing vinyl that 100 parts of viscosity are 7000mPa.s
SiClx powder, after silicon-dioxide powdery is evenly dispersed, stirring is warming up to 150 DEG C, and vacuum degree >=0.08MPa persistently stirs 4h,
Base rubber is made.
B, filler is prepared, takes liquid compound containing platinum, aluminium hydroxide and the viscosity to be respectively by the mass ratio of 8:48:55
Filler is made in the dimethyl silicone polymer containing vinyl of 500mPa.s under conditions of 120 DEG C, vacuum degree >=0.09MPa.
C, component A is prepared, 100 parts of base rubber made from step a, 20 parts of filler, diluent (viscosity made from step b are taken
For the dimethyl silicone polymer containing vinyl of 5000mPa.s) 35 parts, platinum catalyst (match by chloroplatinic acid and vinylsiloxane
Close object) 0.6 part sequentially add in blender, be stirred 1h at room temperature, component A be made；
D, B component is prepared, taking 100 parts of base rubber made from step a, diluent, (viscosity is in the poly- containing vinyl of 5000mPa.s
Dimethyl siloxane) 40 parts, 5 parts of crosslinking agent (hydrogen content 0.5%, viscosity 100mPa.s), inhibitor (poly- divinyl four
Tetramethyldisiloxane) 0.3 part sequentially add in blender, be stirred 1h at room temperature, B component be made；
E, silicone elastomer is prepared, by B component made from component A made from step c and step d according to the ratio of mass ratio 1:1
After mixing, vulcanize 6 hours at 25 DEG C or so can be obtained silicone elastomer to example.
Embodiment 12:
The present embodiment proposes a kind of preparation side of room temperature vulcanized liquid silicone rubber for anti creepage trace described in embodiment 7
Method, comprising the following steps:
A, base rubber is prepared, 50 parts of dioxies are added in the dimethyl silicone polymer containing vinyl that 100 parts of viscosity are 5000mPa.s
SiClx powder, after silicon-dioxide powdery is evenly dispersed, stirring is warming up to 150 DEG C, and vacuum degree >=0.08MPa persistently stirs 3h,
Base rubber A is made.
B, filler is prepared, takes liquid compound containing platinum, aluminium hydroxide and the viscosity to be respectively by the mass ratio of 7:80:68
Filler is made in the dimethyl silicone polymer containing vinyl of 500mPa.s under conditions of 120 DEG C, vacuum degree >=0.09MPa.
C, component A is prepared, 100 parts of base rubber made from step a, 28 parts of filler, diluent (viscosity made from step b are taken
For the dimethyl silicone polymer containing vinyl of 4000mPa.s) 35 parts, platinum catalyst (match by chloroplatinic acid and vinylsiloxane
Close object) 0.6 part sequentially add in blender, be stirred 1h at room temperature, component A be made；
D, B component is prepared, 100 parts of base rubber made from step a, diluent (poly- two containing vinyl of the viscosity in 4000mPa.s are taken
Methylsiloxane) 55 parts, 9 parts of crosslinking agent (hydrogen content 0.8%, viscosity 30mPa.s), inhibitor (tetravinyl tetramethyl-ring
Tetrasiloxane) 0.7 part sequentially add in blender, be stirred 1h at room temperature, B component be made；
E, silicone elastomer is prepared, by B component made from component A made from step c and step d according to the ratio of mass ratio 1:1
After mixing, vulcanize 6.5 hours at 25 DEG C or so can be obtained silicone elastomer to example.
Embodiment 13:
The present embodiment proposes a kind of preparation side of room temperature vulcanized liquid silicone rubber for anti creepage trace described in embodiment 8
Method, comprising the following steps:
A, base rubber is prepared, 58 parts of dioxies are added in the dimethyl silicone polymer containing vinyl that 100 parts of viscosity are 3600mPa.s
SiClx powder, after silicon-dioxide powdery is evenly dispersed, stirring is warming up to 150 DEG C, and vacuum degree >=0.08MPa persistently stirs 5h,
Base rubber A is made.
B, filler is prepared, takes liquid compound containing platinum, aluminium hydroxide and the viscosity to be respectively by the mass ratio of 2:50:55
Filler is made in the dimethyl silicone polymer containing vinyl of 500mPa.s under conditions of 120 DEG C, vacuum degree >=0.09MPa.
C, component A is prepared, 100 parts of base rubber made from step a, 18 parts of filler, diluent (viscosity made from step b are taken
For the dimethyl silicone polymer containing vinyl of 4200mPa.s) 15 parts, (platinum catalyst is chloroplatinic acid and vinyl to platinum catalyst
The complex of siloxanes) 0.3 part sequentially add in blender, be stirred 1h at room temperature, component A be made；
D, B component is prepared, 100 parts of base rubber made from step a, diluent (poly- two containing vinyl of the viscosity in 4200mPa.s are taken
Methylsiloxane) 33 parts, 5 parts of crosslinking agent (hydrogen content 0.6%, viscosity 80mPa.s), inhibitor (poly- divinyl tetramethyl
The mixture of disiloxane and tetravinyl tetramethyl-ring tetrasiloxane composition) 0.4 part sequentially add in blender, stir at room temperature
Mixing 1h is mixed, B component is made；
E, silicone elastomer is prepared, by B component made from component A made from step c and step d according to the ratio of mass ratio 1:1
After mixing, vulcanize 7 hours at 25 DEG C or so can be obtained silicone elastomer to example.
Embodiment 14:
The present embodiment proposes a kind of preparation side of room temperature vulcanized liquid silicone rubber for anti creepage trace described in embodiment 9
Method, comprising the following steps:
A, base rubber is prepared, 54 parts of dioxies are added in the dimethyl silicone polymer containing vinyl that 100 parts of viscosity are 5500mPa.s
SiClx powder, after silicon-dioxide powdery is evenly dispersed, stirring is warming up to 150 DEG C, and vacuum degree >=0.08MPa is lasting to stir
Base rubber is made in 3.5h.
B, filler is prepared, takes liquid compound containing platinum, aluminium hydroxide and the viscosity to be respectively by the mass ratio of 6:65:55
Filler is made in the dimethyl silicone polymer containing vinyl of 500mPa.s under conditions of 120 DEG C, vacuum degree >=0.09MPa.
C, component A is prepared, 100 parts of base rubber made from step a, 25 parts of filler, diluent (viscosity made from step b are taken
For the dimethyl silicone polymer containing vinyl of 6500mPa.s) 20 parts, platinum catalyst (match by chloroplatinic acid and vinylsiloxane
Close object) 0.5 part sequentially add in blender, be stirred 1h at room temperature, component A be made；
D, B component is prepared, 100 parts of base rubber made from step a, diluent (poly- two containing vinyl of the viscosity in 6500mPa.s are taken
Methylsiloxane) 40 parts, 5 parts of crosslinking agent (hydrogen content 0.7%, viscosity 65mPa.s), inhibitor (poly- divinyl tetramethyl
The mixture of disiloxane and tetravinyl tetramethyl-ring tetrasiloxane composition) 0.5 part sequentially add in blender, stir at room temperature
Mixing 1h is mixed, B component is made；
E, silicone elastomer is prepared, by B component made from component A made from step c and step d according to the ratio of mass ratio 1:1
After mixing, vulcanize 6.8 hours at 25 DEG C or so can be obtained silicone elastomer to example.
Embodiment 15:
The present embodiment proposes a kind of room temperature vulcanized liquid silicone rubber and preparation method thereof of anti creepage trace.
Its formula constituent is made of component A and B component, in which:
Component A
Base rubber: 1000g,
Filler: 300g,
Viscosity is in dimethyl silicone polymer of the 3000mPa.s containing vinyl: 200g,
The complex of chloroplatinic acid and vinylsiloxane: 7g；
B component
Base rubber: 1000g,
Viscosity is dimethyl silicone polymer of the 3000mPa.s containing vinyl: 415g,
The crosslinking agent that hydrogen content is 0.65%, viscosity is 88mPa.s: 85g,
Poly- divinyl tetramethyl disiloxane inhibitor: 7g.
The formula of above-mentioned base rubber are as follows:
Viscosity is the dimethyl silicone polymer containing vinyl of 5800mPa.s: 1000g,
Specific surface area is 200m2The gas-phase silica of/g: 530g.
In above-mentioned component A, filler is by the aluminium hydroxide that liquid compound containing platinum, average grain diameter are 10 μ and viscosity
The dimethyl silicone polymer containing vinyl of 500mPa.s is under conditions of 120 DEG C, vacuum degree >=0.09 MPa, through high-speed stirred
Obtained by machine mixing 2h.
In preparation process, high speed first is added in the dimethyl silicone polymer 1000g containing vinyl that viscosity is 5800mPa.s
In blender, then it is 200m that specific surface area is added in batches2The gas-phase silica 530g of/g, to gas-phase silica substantially uniformity point
After dissipating, the temperature of high-speed mixer is increased to 150 DEG C, vacuum degree >=0.08MPa persistently stirs 5h, obtains base rubber；
It is dimethyl silicone polymer 200g, chlorine platinum of the 3000mPa.s containing vinyl by base rubber 1000g, filler 300g, viscosity
The complex 7g of acid and vinylsiloxane is sequentially added in high-speed mixer, and mixing 1h is stirred at room temperature, obtains component A.
It is dimethyl silicone polymer 415g, hydrogen content 0.65% of the 3000mPa.s containing vinyl by base rubber 1000g, viscosity
Viscosity is that crosslinking agent 85g, the poly- divinyl tetramethyl disiloxane inhibitor 7g of 88mPa.s sequentially adds high-speed mixer
In, mixing 1h is stirred at room temperature, obtains B component.
A, B component are made it after evenly mixing by mixing apparatus according to mass ratio 1:1, injected in mold, on 25 DEG C of left sides
Silicone elastomer can be obtained in 6.2 hours in right vulcanization.
Embodiment 16:
The present embodiment proposes a kind of room temperature vulcanized liquid silicone rubber and preparation method thereof of anti creepage trace.
Its formula constituent is made of component A and B component, in which:
Component A
Base rubber: 5000g,
Filler: 1300g,
Viscosity is dimethyl silicone polymer of the 8000mPa.s containing vinyl: 1900g,
The complex of chloroplatinic acid and vinylsiloxane: 35g；
B component
Base rubber: 5000g,
Viscosity is dimethyl silicone polymer of the 8000mPa.s containing vinyl: 2750g,
Hydrogen content is 0.7%, and viscosity is the crosslinking agent of 68mPa.s: 450g,
The mixed inhibitor of poly- divinyl tetramethyl disiloxane and tetravinyl tetramethyl-ring tetrasiloxane composition: 35g.
The formula of above-mentioned base rubber are as follows:
Viscosity is the dimethyl silicone polymer containing vinyl of 5600mPa.s: 5000g
Specific surface area is 200m2The gas-phase silica of/g: 2750g
Filler is 500mPa.s containing ethylene by the aluminium hydroxide that liquid compound containing platinum, average grain diameter are 30 μ and viscosity
The dimethyl silicone polymer of base is under conditions of 120 DEG C, vacuum degree >=0.09 MPa, through obtained by high-speed mixer mixing 2h.
First the dimethyl silicone polymer 5000g containing vinyl that viscosity is 5600mPa.s is added in high-speed mixer, then
It is 200m that specific surface area is added in batches2The gas-phase silica 2750g of/g will be high after the dispersion of gas-phase silica substantially uniformity
The temperature of fast blender is increased to 150 DEG C, and vacuum degree >=0.08MPa persistently stirs 5h, obtains base rubber；
It is dimethyl silicone polymer 1900g, chlorine of the 8000mPa.s containing vinyl by base rubber 5000g, filler 1300g, viscosity
The complex 35g of platinic acid and vinylsiloxane is sequentially added in high-speed mixer, and mixing 1h is stirred at room temperature, obtains A group
Part.
It is dimethyl silicone polymer 2750g, hydrogen content 0.7% of the 8000mPa.s containing vinyl by base rubber 5000g, viscosity
Viscosity is crosslinking agent 450g, poly- divinyl tetramethyl disiloxane and the tetravinyl tetramethyl-ring tetrasiloxane of 68mPa.s
The mixed inhibitor 35g of composition is sequentially added in high-speed mixer, and mixing 1h is stirred at room temperature, obtains B component.
A, B component are made it after evenly mixing by mixing apparatus according to mass ratio 1:1, it is small in 25 DEG C or so vulcanizations 6.3
When silicone elastomer can be obtained.
Silicone elastomer made from above-described embodiment 10~16 is subjected to properties of product test, the results are shown in Table 1.
Table 1
Silicon can be obtained it is found that vulcanizing 6~8 hours using liquid silastic prepared by the present invention at 25 DEG C or so by above-mentioned data
Rubber elastomer, anti creepage trace is up to 1A4.5 grades and has good mobility and excellent electric property.
Comparative example 1:
This comparative example is replaced the composition of filler in component A, in this comparative example, is pressed on the basis of embodiment 12
The mass ratio of 7:68 takes liquid compound containing platinum respectively and viscosity is the dimethyl silicone polymer containing vinyl of 500mPa.s
Filler is made under conditions of 120 DEG C, vacuum degree >=0.09MPa.Remaining formula constituent and preparation method and 12 phase of embodiment
Together, silicone elastomer made from this comparative example and embodiment 12 is subjected to properties of product test, the results are shown in Table 2.
Table 2
Comparative example 2:
This comparative example is replaced the composition of filler in component A, in this comparative example, is pressed on the basis of embodiment 14
The mass ratio of 65:55 take respectively the dimethyl silicone polymer containing vinyl that aluminium hydroxide and viscosity are 500mPa.s 120 DEG C,
Filler is made under conditions of vacuum degree >=0.09MPa.Remaining formula constituent and preparation method are identical as embodiment 14, this is right
Silicone elastomer made from ratio and embodiment 14 carries out properties of product test, the results are shown in Table 3.
Table 3
Comparative example 3:
This comparative example modifies to the composition and ratio of filler in component A on the basis of embodiment 11, in this comparative example,
Taking liquid compound containing platinum, aluminium hydroxide and viscosity respectively by the mass ratio of 15:25:55 is 500mPa.s containing vinyl
Filler is made in dimethyl silicone polymer under conditions of 120 DEG C, vacuum degree >=0.09MPa.Remaining formula constituent and preparation side
Formula is identical as embodiment 11, silicone elastomer made from this comparative example and embodiment 11 is carried out properties of product test, as a result
It is shown in Table 4.
Table 4
Found out by the test data of above-mentioned comparative example 1~3, in the present invention, filling aluminium hydroxide, which is that one kind is highly effective, to be mentioned
The method of high liquid silastic anti creepage trace, but loading excessively will affect the mobility of liquid silastic, and loading is very little
1A4.5 grades of creepage traces can not be then reached, the presence of proper proportion platinum is able to suppress galvanic corrosion damage to polysiloxanes macromolecular chain
Degradation, therefore, the present invention is used in compounding by platinum and aluminium hydroxide appropriate, first is that guarantee reach 1A4.5 grades of creepage traces with
Good fluidity gets both；Two can be achieved on to vulcanize at 25 DEG C or so and silicone elastomer can be obtained in 6~8 hours.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is all according to
According to technical spirit any simple modification to the above embodiments of the invention, equivalent variations, protection of the invention is each fallen within
Within the scope of.
Claims (8)
1. a kind of room temperature vulcanized liquid silicone rubber of anti creepage trace, it is characterised in that: according to the mass fraction, including following raw material
Formula:
Component A: 100 parts of base rubbers, 10~30 parts of fillers, 11~40 parts of diluents, 0.2~0.7 part of platinum catalyst；
B component: 100 parts of base rubbers, 20~60 parts of diluents, 1~10 part of crosslinking agent, 0.2~0.7 part of inhibitor,
In the component A and B component, base rubber includes according to the mass fraction: 100 parts of viscosity are 3000~8000mPa.s containing second
The dimethyl silicone polymer of alkenyl and 50~60 parts of silicon-dioxide powderies.
2. a kind of room temperature vulcanized liquid silicone rubber of anti creepage trace according to claim 1, it is characterised in that: the A
In component, filler is the poly dimethyl containing vinyl that liquid compound containing platinum, aluminium hydroxide and viscosity are 500mPa.s
Siloxanes mixture obtained under high temperature, high vacuum condition.
3. a kind of room temperature vulcanized liquid silicone rubber of anti creepage trace according to claim 2, it is characterised in that: described to fill out
Fill in agent, liquid compound containing platinum, aluminium hydroxide, dimethyl silicone polymer containing vinyl mass ratio control 1~10:
30~100:30~100.
4. a kind of room temperature vulcanized liquid silicone rubber of anti creepage trace according to claim 1, it is characterised in that: the A
In component, platinum catalyst is the complex of chloroplatinic acid and vinylsiloxane.
5. a kind of room temperature vulcanized liquid silicone rubber of anti creepage trace according to claim 1, it is characterised in that: the A
In component and B component, diluent is viscosity in dimethyl silicone polymer of the 3000~8000mPa.s containing vinyl.
6. a kind of room temperature vulcanized liquid silicone rubber of anti creepage trace according to claim 1, it is characterised in that: the B
In component, the hydrogen content of crosslinking agent is 0.5~0.8%, and viscosity is 30~100mPa.s.
7. a kind of room temperature vulcanized liquid silicone rubber of anti creepage trace according to claim 1, it is characterised in that: the B
In component, inhibitor is any one in poly- divinyl tetramethyl disiloxane or tetravinyl tetramethyl-ring tetrasiloxane
Or the mixture of two kinds of compositions.
8. a kind of preparation method of the room temperature vulcanized liquid silicone rubber of anti creepage trace, it is characterised in that: the following steps are included:
A, base rubber is prepared, 50~60 parts of silicon-dioxide powderies are added in 100 parts of dimethyl silicone polymers containing vinyl, to two
Silica powder after mixing evenly, is warming up to 150 DEG C, and vacuum degree >=0.08MPa persistently stirs 3~5h, obtains base rubber；
B, component A is prepared, 100 parts of base rubber, 10~30 parts of filler, 11~40 parts of diluent, 0.2~0.7 part of platinum catalyst are taken
It sequentially adds in blender, is stirred 1h at room temperature, component A is made；
C, base rubber B is prepared, takes 100 parts of base rubber, 20~60 parts of diluent, 1~10 part of crosslinking agent, 0.2~0.7 part of inhibitor successively
It is added in blender, is stirred 1h at room temperature, B component is made；
D, silicone elastomer is prepared, by B component made from component A made from step b and step c according to the ratio of mass ratio 1:1
After mixing, vulcanize 6~8 hours can be obtained silicone elastomer at room temperature to example.
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| CN113416417A (en) * | 2021-06-17 | 2021-09-21 | 惠州市永卓科技有限公司 | Tracking-resistant addition type liquid silica gel and preparation method thereof |
| CN114276687A (en) * | 2021-12-30 | 2022-04-05 | 广州市瑞合新材料科技有限公司 | High-fluidity liquid silicone rubber and preparation method and application thereof |
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| CN104974530A (en) * | 2015-07-16 | 2015-10-14 | 华南理工大学 | High-performance tracking-resistant silicone rubber and preparation method thereof |
| CN107129689A (en) * | 2017-04-18 | 2017-09-05 | 华南理工大学 | High-performance anti creepage trace add-on type liquid silicon rubber composition and preparation method thereof |
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| EP0787772B1 (en) * | 1996-01-30 | 2003-09-17 | Dow Corning Toray Silicone Company Ltd. | Silicone rubber composition |
| CN102070907A (en) * | 2010-12-16 | 2011-05-25 | 平高集团有限公司 | Silicone rubber for composite insulator and preparation method thereof |
| CN104974530A (en) * | 2015-07-16 | 2015-10-14 | 华南理工大学 | High-performance tracking-resistant silicone rubber and preparation method thereof |
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| CN113416417A (en) * | 2021-06-17 | 2021-09-21 | 惠州市永卓科技有限公司 | Tracking-resistant addition type liquid silica gel and preparation method thereof |
| CN114276687A (en) * | 2021-12-30 | 2022-04-05 | 广州市瑞合新材料科技有限公司 | High-fluidity liquid silicone rubber and preparation method and application thereof |
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