CN109161210A - Magnetic silicon rubber formula and magnetic silicon rubber - Google Patents
Magnetic silicon rubber formula and magnetic silicon rubber Download PDFInfo
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- CN109161210A CN109161210A CN201811138163.0A CN201811138163A CN109161210A CN 109161210 A CN109161210 A CN 109161210A CN 201811138163 A CN201811138163 A CN 201811138163A CN 109161210 A CN109161210 A CN 109161210A
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- C08K3/20—Oxides; Hydroxides
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Abstract
This application provides a kind of magnetic silicon rubber formula and magnetic silicon rubbers.The magnetic silicon rubber formula is formed by mass parts number scale are as follows: both-end vinyl silicone oil, 100 parts；Containing hydrogen silicone oil, 30 parts~50 parts；Magnetic powder, 2 parts~25 parts；Silane coupling agent, 0.5 part~5 parts；Gas-phase silica, 0 part~2 parts；The magnetic silicon rubber formula further includes curing agent and inhibitor, and content of the curing agent in magnetic silicon rubber formula is 500ppm~2000ppm, and the content of the inhibitor is that the magnetic silicon rubber is formulated the 3%~10% of gross mass.The magnetic silicon rubber formula has good magnetic performance by the magnetic silicon rubber to be formed that is heating and curing, while the magnetic silicon rubber also has good mechanical property.
Description
Technical field
This application involves field of rubber technology more particularly to a kind of magnetic silicon rubber formulas and magnetic silicon rubber.
Background technique
With the application of automobile electronic multi-functional and universal, electronic vehicle magnetic elements are developed rapidly.
Since automobile is run under the particular surroundings that vibration is big, temperature is high, so being proposed to matched magnetic elements higher
It is required that such as, it is desirable that matched magnetic elements had not only met the big requirement of operating temperature range but also had met the big requirement etc. of intensity.
However general ferromagnetic steel class magnetic material density is big, hard, is easy to be broken in vibration, machine-shaping is difficult, is difficult to be made
Micro part, even if can be made micro part, use it is also easy to break, in the special occasions of some miniaturizations
Lower use is restricted.
High molecular polymer it is flexible it is light, processing performance is good, molecule structure change is various, have inorganic material can not replace
Characteristic.In magnetic powder material incorporation high molecular polymer, manufactured magnetic substance is non-breakable and easy processing and segmentation.
Silicon rubber is that molecule main chain is silicon oxygen (- Si-O -) key inorganic structure, the high resiliency macromolecule that side group is organic group
Polymer, main chain are freely rotatable, therefore flexibility is good, while again because silicon atom is than its elasticity of carbon atom volume die
Good, use temperature range is wide (usually -100 DEG C~315 DEG C), and does not have toxicity.With the development of science and technology, having prominent characteristic
Function silastic material come into being, magnetic silicon rubber be in order to by silicone rubber applications to magnetic aspect studies conducted,
Therefore how to make magnetic silicon rubber not only has excellent magnetic property but also retains the excellent mechanical property of silicon rubber as current function
One of the hot and difficult issue of property high molecular material research field.
Summary of the invention
In view of the problems in the background art, the application is designed to provide a kind of magnetic silicon rubber formula and magnetism
Silicon rubber, the magnetic silicon rubber has good magnetic performance, while the magnetic silicon rubber also has good mechanical property
Energy.
In order to achieve the above object, the application's in a first aspect, being pressed this application provides a kind of magnetic silicon rubber formula
Mass parts number scale, composition are as follows: both-end vinyl silicone oil, 100 parts；Containing hydrogen silicone oil, 30 parts~50 parts；Magnetic powder, 2 parts~25
Part；Silane coupling agent, 0.5 part~5 parts；Gas-phase silica, 0 part~2 parts；The magnetic silicon rubber formula further include curing agent and
Inhibitor, content of the curing agent in magnetic silicon rubber formula is 500ppm~2000ppm, and the inhibitor contains
Amount is that the magnetic silicon rubber is formulated the 3%~10% of gross mass.
In the second aspect of the application, this application provides a kind of magnetic silicon rubbers, by the magnetic of the application first aspect
Property silicone rubber formulations by being heating and curing to be formed.
Compared with the existing technology, the application has the beneficial effect that
Contain magnetic powder in the magnetic silicon rubber formula of the application, in the process to form magnetic silicon rubber that is heating and curing
In, under the action of silane coupling agent, magnetic powder can firmly be attached to both-end vinyl silicone oil and containing hydrogen silicone oil through silicon
In the three-dimensional polymer for the tridimensional network that hydrogen is formed by addition reaction, make magnetic silicon rubber that there is good magnetics
Can, saturation magnetization is 1.8emu/g~83emu/g, and coercivity is 19Oe~105Oe, while the magnetic silicon rubber is also
With good mechanical property, tensile strength is 2MPa~6.5MPa, and elongation at break is 200%~305%.
Specific embodiment
The following detailed description of according to the magnetic silicon rubber formula of the application, magnetic silicon rubber and preparation method thereof.
Illustrate the magnetic silicon rubber formula according to the application first aspect first, by mass parts number scale, composition are as follows: both-end second
Alkenyl silicone oil, 100 parts；Containing hydrogen silicone oil, 30 parts~50 parts；Magnetic powder, 2 parts~25 parts；Silane coupling agent, 0.5 part~5 parts；
Gas-phase silica, 0 part~2 parts；The magnetic silicon rubber formula further includes curing agent and inhibitor, and the curing agent is in the magnetic
Property silicone rubber formulations in content be 500ppm~2000ppm, the content of the inhibitor is that magnetic silicon rubber formula is total
The 3%~10% of quality.
In the formula of the magnetic silicon rubber according to the application first aspect, the magnetic powder is that have excellent magnetics
The magnetic material of performance, when the magnetic silicon rubber formula, which passes through, to be heating and curing to form magnetic silicon rubber, in curing agent and suppression
Under the action of preparation, containing hydrogen silicone oil and both-end vinyl silicone oil occur hydrosilylation and generate chemical bonding, form three dimensional network
The three-dimensional polymer of shape structure, wherein containing hydrogen silicone oil plays the role of crosslinking agent, and gas-phase silica plays reinforced filling,
Silane coupling agent can carry out surface to magnetic powder and be modified, and avoid magnetic powder in the three-dimensional polymer of tridimensional network
It is not easy to disperse, problem easy to reunite, realizes the magnetic powder purpose evenly dispersed in the three-dimensional polymer of tridimensional network, together
When silane coupling agent can also be effectively improved by bonding action magnetic powder and tridimensional network three-dimensional polymer it
Between binding force make magnetic machine so that magnetic powder be allow firmly to be attached in the three-dimensional polymer of tridimensional network
Silicon rubber can keep the magnetic performance of magnetic powder and the mechanical property of silicon rubber simultaneously.
Herein it should be noted that the number of the gas-phase silica is not contain gas in 0 part i.e. expression magnetic silicon rubber
Phase white carbon black.
In the formula of the magnetic silicon rubber according to the application first aspect, the average grain diameter of the gas-phase silica is
30nm~200nm.
The magnetic silicon rubber of the application has preferable magnetic performance, and saturation magnetization is 1.8emu/g~83emu/
G, coercivity be 19Oe~105Oe, while the magnetic silicon rubber have preferable mechanical property, tensile strength be 2MPa~
6.5MPa, elongation at break are 200%~305%.
In the formula of the magnetic silicon rubber according to the application first aspect, the viscosity of the both-end vinyl silicone oil is
5000mPas~100000mPas.
In the formula of the magnetic silicon rubber according to the application first aspect, the both-end vinyl silicone oil can be by difference
The both-end vinyl silicone oil of viscosity forms, and the ingredient of magnetic silicon rubber can be made more uniform in this way, performance is more stable.It is preferred that
Ground, the both-end vinyl silicone oil is selected from the both-end vinyl silicone oil that viscosity is 5000mPas, viscosity is 10000mPas's
The both-end ethylene that both-end vinyl silicone oil that both-end vinyl silicone oil, viscosity are 20000mPas, viscosity are 50000mPas
At least two in base silicone oil, the both-end vinyl silicone oil that viscosity is 100000mPas.It is further preferred that the both-end second
Both-end vinyl silicone oil that both-end vinyl silicone oil that alkenyl silicone oil is 5000mPas by viscosity, viscosity are 10000mPas,
Both-end vinyl silicone oil that both-end vinyl silicone oil that viscosity is 20000mPas, viscosity are 50000mPas, viscosity are
The both-end vinyl silicone oil of 100000mPas forms.
In the formula of the magnetic silicon rubber according to the application first aspect, the mass content of hydrogen in the containing hydrogen silicone oil
For 0.18wt%~1.0wt%.
In the formula of the magnetic silicon rubber according to the application first aspect, in order to coordinate the mechanical property of magnetic silicon rubber
Can, alloing magnetic silicon rubber, tensile strength with higher and higher elongation at break, the containing hydrogen silicone oil can be by simultaneously
The containing hydrogen silicone oil of the mass content of different hydrogen forms.The mass content that the preferably described containing hydrogen silicone oil is selected from hydrogen is 0.18wt%'s
Containing hydrogen silicone oil, hydrogen mass content be the containing hydrogen silicone oil of 0.3wt%, hydrogen mass content be the containing hydrogen silicone oil of 0.5wt%, hydrogen
Mass content is at least two in the containing hydrogen silicone oil of 1.0wt%.It is further preferred that the containing hydrogen silicone oil is contained by the quality of hydrogen
Amount be the containing hydrogen silicone oil of 0.18wt%, the containing hydrogen silicone oil that the mass content of hydrogen is 0.3wt%, hydrogen mass content be 0.5wt%
Containing hydrogen silicone oil, hydrogen mass content be 1.0wt% containing hydrogen silicone oil form.
In the formula of the magnetic silicon rubber according to the application first aspect, the partial size of the magnetic powder is to magnetic silicon
The mechanical properties such as the tensile strength of rubber have a significant impact, and the partial size of usual magnetic powder is smaller, obtained magnetic silicon rubber
Mechanical property is stronger, but the partial size of magnetic powder is smaller, and the reunion of powder is more obvious, and causes it in the body of tridimensional network
Dispersion in type polymer is more difficult, and is more not easy to be infiltrated by silicon rubber, and then influences the degree of mixedness and property of magnetic silicon rubber
Energy；Although and large-sized magnetic powder is easily uniformly dispersed, and is easy to appear defect with rubber junction at it, also will affect
The mechanical property of magnetic silicon rubber.Preferably, the average grain diameter of the magnetic powder is 30-100nm.
In the formula of the magnetic silicon rubber according to the application first aspect, the magnetic powder is selected from four oxidations three
One or both of iron, carbonyl iron dust.
The magnetic silicon rubber according to the application first aspect formula in, the silane coupling agent be selected from KH-570,
One or both of KH-560.
In the formula of the magnetic silicon rubber according to the application first aspect, the inhibitor inhibits selected from organic silicon
Agent, it is preferable that the organic silicon inhibitor is selected from maleic acid ester inhibitors.
In the formula of the magnetic silicon rubber according to the application first aspect, the curing agent is selected from platinum catalyst, excellent
Selection of land, the platinum catalyst are selected from one or both of platinum water, chloroplatinic acid.
Secondly magnetic silicon rubber of the explanation according to the application second aspect, the magnetic silicon as described in the application first aspect
Rubber compounding is by being heating and curing to be formed.
In the magnetic silicon rubber according to the application second aspect, staged heating is can be used in magnetic silicon rubber formula
Cured mode forms magnetic silicon rubber, i.e., first heats magnetic silicon rubber formula and carry out first time solidification, then continue to heat
Second is carried out to solidify, after obtain magnetic silicon rubber.Concretely: by magnetic silicon rubber formula be first heated to 80 DEG C~
100 DEG C, then isothermal curing 1.5h~2.5h, is then again heated to 100 DEG C~120 DEG C, later isothermal curing 1.5h~2.5h,
After obtain the magnetic silicon rubber.
The preparation method for illustrating the magnetic silicon rubber according to the application third aspect again is used to prepare the application second party
Magnetic silicon rubber described in face, comprising steps of S1, magnetic powder is placed in silane coupling agent and carries out mixing ball in ball mill
Mill, is then sufficiently mixed and is carried out with containing hydrogen silicone oil, gas-phase silica first time stirring, be subsequently added into inhibitor and curing agent simultaneously
Second is carried out to stir, after obtain premix material A；Both-end vinyl silicone oil is placed in blender and is stirred by S2, knot
Premix material B is obtained after beam；Premix material A is sufficiently mixed and is stirred evenly with premix material B, is subsequently poured into mold by S3,
Heating carries out first time solidification after bubble is taken out in decompression, then continues to heating and carry out second to solidify, after obtain magnetic silicon rubber.
In the preparation method of the magnetic silicon rubber according to the application third aspect, by magnetic powder, silane coupled
Agent and gas-phase silica are mixed in containing hydrogen silicone oil in advance, and adding that both-end vinyl silicone oil further mixes can be effective
Ground improve magnetic powder, gas-phase silica and tridimensional network three-dimensional polymer (under the action of curing agent and inhibitor,
The substance that hydrosilylation generates occurs for containing hydrogen silicone oil and both-end vinyl silicone oil) compatibility so that arriving
Magnetic silicon rubber has excellent mechanical property.
In the preparation method of the magnetic silicon rubber according to the application third aspect, in step sl, the mixing
The time of ball milling is 60min~90min, and the revolving speed of the mixing and ball milling is 200r/min~400r/min.
In the preparation method of the magnetic silicon rubber according to the application third aspect, in step sl, described first
The temperature of secondary stirring is -5 DEG C~10 DEG C, and the time of the first time stirring is 0.5h~1.5h, and the first time stirring turns
Speed is 1000r/min~2000r/min.
In the preparation method of the magnetic silicon rubber according to the application third aspect, in step sl, described second
The temperature of secondary stirring is -5 DEG C~10 DEG C, and the time of second of stirring is 20min~30min, second of stirring
Revolving speed is 1500r/min~2500r/min.
In the preparation method of the magnetic silicon rubber according to the application third aspect, in step s 2, the stirring
Revolving speed be 300r/min~400r/min, time of the stirring is 8h~12h.
In the preparation method of the magnetic silicon rubber according to the application third aspect, in step s3, the stirring
Time be 80min~120min, the revolving speed of the stirring is 2500r/min~3500r/min.
In the preparation method of the magnetic silicon rubber according to the application third aspect, in step s3, the mold
Type do not limit specifically, can be selected according to actual needs, specifically, the mold can be polytetrafluoroethylene (PTFE) mould
Tool.
In the preparation method of the magnetic silicon rubber according to the application third aspect, in step s3, described first
Secondary cured temperature is 80 DEG C~100 DEG C, and the first time cured time is 1.5h~2.5h.
In the preparation method of the magnetic silicon rubber according to the application third aspect, in step s3, described second
Secondary cured temperature is 100 DEG C~120 DEG C, and the first time cured time is 1.5h~2.5h.
Below with reference to embodiment, the application is further described.It should be understood that these embodiments be merely to illustrate the application without
For limiting scope of the present application.
Embodiment 1
The Fe for being 30nm~50nm by average grain diameter3O4Magnetic powder 10.0g, silane coupling agent KH560 5.0g are placed in ball
In grinding machine, mixing and ball milling 60min at room temperature, wherein the revolving speed 300r/min of ball milling, after obtain MODIFIED Fe3O4Powder
Body；By MODIFIED Fe3O4The mass content of containing hydrogen silicone oil 3.0g, hydrogen that the mass content of powder and hydrogen is 1.0wt% are 0.50wt%
Containing hydrogen silicone oil 3.0g, hydrogen mass content be 0.30wt% containing hydrogen silicone oil 13.0g, hydrogen mass content be 0.18wt%'s
Containing hydrogen silicone oil 7.0g and 1.0g gas-phase silica is uniformly mixed, and first time stirring is carried out under the conditions of 10 DEG C, wherein stirring
Time is 60min, and the revolving speed of stirring is 2000r/min；It is subsequently added into 8.0g maleic acid ester inhibitors and 0.15g platinum water simultaneously
Second is carried out to stir, wherein the time of stirring is 30min, and the revolving speed of stirring is 2000r/min, after obtain pre-composition
Expect A.
By viscosity be 5000mPas both-end vinyl silicone oil 23.0g, viscosity be 10000mPas both-end vinyl
The both-end ethylene that both-end vinyl silicone oil 45.0g that silicone oil 23.0g, viscosity are 20000mPas, viscosity are 50000mPas
Base silicone oil 4.5g, the both-end vinyl silicone oil 4.5g that viscosity is 100000mPas are sufficiently mixed and stir evenly, wherein stirring
Revolving speed be 300r/min, time of stirring is 10h, after obtain premix material B.
At room temperature, premix material A and premix material B are mixed and stirred for uniformly, wherein the revolving speed of stirring is
3000r/min, the time of stirring are 120min；Then obtained material is poured into polytetrafluoroethylene (PTFE) plate groove and is paved,
It is put into vacuum oven later and carries out decompression pumping bubble to bubble is no longer generated, be subsequently placed into baking oven, be first heated to 90 DEG C simultaneously
Then isothermal curing 2h is again heated to 110 DEG C and isothermal curing 1h, restores later to room temperature and take out, obtain magnetic silicon rubber.
Embodiment 2
The Fe for being 30nm~50nm by average grain diameter3O4Magnetic powder 25.0g, silane coupling agent KH570 5.0g are placed in ball
In grinding machine, mixing and ball milling 60min at room temperature, wherein the revolving speed 300r/min of ball milling, after obtain MODIFIED Fe3O4Powder
Body；By MODIFIED Fe3O4The mass content of containing hydrogen silicone oil 3.0g, hydrogen that the mass content of powder and hydrogen is 1.0wt% are 0.50wt%
Containing hydrogen silicone oil 17.0g, hydrogen mass content be 0.30wt% containing hydrogen silicone oil 17.0g, hydrogen mass content be 0.18wt%
Containing hydrogen silicone oil 10.0g and 2.0g gas-phase silica be uniformly mixed, under the conditions of 10 DEG C carry out first time stirring, wherein stir
The time mixed is 60min, and the revolving speed of stirring is 2000r/min；It is subsequently added into 6.0g maleic acid ester inhibitors and 0.35g platinum
Water, and carry out second and stir, wherein the time of stirring is 30min, and the revolving speed of stirring is 2000r/min, after obtain it is pre-
Mixed material A.
By viscosity be 5000mPas both-end vinyl silicone oil 37.0g, viscosity be 10000mPas both-end vinyl
The both-end ethylene that both-end vinyl silicone oil 37.0g that silicone oil 18.0g, viscosity are 20000mPas, viscosity are 50000mPas
Base silicone oil 4.0g, the both-end vinyl silicone oil 4.0g that viscosity is 100000mPas are sufficiently mixed and stir evenly, wherein stirring
Revolving speed be 300r/min, the mechanical time be 10h, after obtain premix material B.
At room temperature, premix material A and premix material B are mixed and stirred for uniformly, wherein the revolving speed of stirring is
3000r/min, the time of stirring are 120min；Then obtained material is poured into polytetrafluoroethylene (PTFE) plate groove and is paved,
It is put into vacuum oven later and carries out decompression pumping bubble to no longer generation bubble；It is subsequently placed into baking oven, is first heated to 90 DEG C simultaneously
Then isothermal curing 2h is again heated to 110 DEG C and isothermal curing 1h, restores later to room temperature and take out, obtain magnetic silicon rubber.
Embodiment 3
Carbonyl iron dust 5.0g, silane coupling agent KH560 5.0g that average grain diameter is 50nm~100nm are placed in ball mill
In, mixing and ball milling 60min at room temperature, wherein the revolving speed 300r/min of ball milling, after obtain modified carbonyl iron powder；
The mass content of containing hydrogen silicone oil 2.0g, hydrogen that mass content by modified carbonyl iron powder and hydrogen is 1.0wt% are 0.50wt%'s
Containing hydrogen silicone oil 12.0g, hydrogen mass content be 0.30wt% containing hydrogen silicone oil 12.0g, hydrogen mass content be 0.18wt%'s
Containing hydrogen silicone oil 7.0g is uniformly mixed, and first time stirring is carried out in 10 DEG C of environment, wherein the time of stirring is 60min, stirring
Revolving speed is 2000r/min；8.0g maleic acid ester inhibitors and 0.29g platinum water are subsequently added into, and carries out second and stirs,
In, time of stirring is 30min, and the revolving speed of stirring is 2000r/min, after obtain premix material A.
By viscosity be 5000mPas both-end vinyl silicone oil 9.0g, viscosity be 10000mPas both-end vinyl
The both-end vinyl that both-end vinyl silicone oil 57.0g that silicone oil 9.0g, viscosity are 20000mPas, viscosity are 50000mPas
Silicone oil 19.0g, the both-end vinyl silicone oil 6.0g that viscosity is 100000mPas are mixed and stirred for uniformly, wherein stirring turns
Speed is 300r/min, and time of stirring is 10h, after obtain premix material B.
At room temperature, premix material A and premix material B are mixed and stirred for uniformly, wherein the revolving speed of stirring is
3000r/min, the time of stirring are 120min；Then resulting material is poured into polytetrafluoroethylene (PTFE) plate groove and is paved, it
After be put into vacuum oven carry out decompression take out bubble to no longer generate bubble；It is subsequently placed into baking oven, is first heated to 90 DEG C and perseverance
Temperature solidification 2h, is then again heated to 110 DEG C and isothermal curing 1h, restores later to room temperature and take out, obtain magnetic silicon rubber.
Embodiment 4
Carbonyl iron dust 15.0g, silane coupling agent KH570 5.0g that average grain diameter is 50nm~100nm are placed in ball mill
In, mixing and ball milling 60min at room temperature, wherein the revolving speed 300r/min of ball milling, after obtain modified carbonyl iron powder；
By the mass content of hydrogen be 1.0wt% containing hydrogen silicone oil 3.0g, hydrogen mass content be 0.50wt% containing hydrogen silicone oil 16.0g,
The containing hydrogen silicone oil 9.0g that the mass content of containing hydrogen silicone oil 16.0g, hydrogen that the mass content of hydrogen is 0.30wt% are 0.18wt% with
And 0.5g gas-phase silica is uniformly mixed, and first time stirring is carried out in 10 DEG C of environment, wherein the time of stirring is 60min, is stirred
The revolving speed mixed is 2000r/min；10.0g maleic acid ester inhibitors and 0.25g platinum water are subsequently added into, and are stirred for the second time
Mix, wherein the time of stirring is 30min, and the revolving speed of stirring is 2000r/min, after obtain premix material A.
By viscosity be 5000mPas both-end vinyl silicone oil 12.0g, viscosity be 10000mPas both-end vinyl
The both-end ethylene that both-end vinyl silicone oil 71.0g that silicone oil 12.0g, viscosity are 20000mPas, viscosity are 50000mPas
Base silicone oil 2.5g, the both-end vinyl silicone oil 2.5g that viscosity is 100000mPas premix, which merge, to stir evenly, wherein stirring
Revolving speed is 300r/min, and the time of stirring is 10h, after obtain premix material B.
Premix material A and premix material B are mixed and stirred for uniformly, wherein the revolving speed of stirring is 3000r/min, stirring
Time be 120min；Then resulting material is poured into polytetrafluoroethylene (PTFE) plate groove and is paved, later after to be put into vacuum dry
Decompression is carried out in dry case takes out bubble to no longer generation bubble；It is subsequently placed into baking oven, is first heated to 90 DEG C and isothermal curing 2h, then
110 DEG C and isothermal curing 1h are again heated to, restores later to room temperature and takes out, obtain magnetic silicon rubber.
According to the tensile strength and elongation at break of the GB/T 528-2009 antistatic silicon rubber measured, using vibration
The magnetic performance of dynamic sample magnetometer (VSM) test magnetic silicon rubber.
The performance test results of 1 embodiment 1-4 of table
| Saturation magnetization | Coercivity | Tensile strength | Elongation at break | |
| Embodiment 1 | 36.78emu/g | 34.1Oe | 6.39MPa | 300.20% |
| Embodiment 2 | 83.58emu/g | 100.13Oe | 4.12MPa | 206.78% |
| Embodiment 3 | 1.87emu/g | 19.2Oe | 4.75MPa | 242.86% |
| Embodiment 4 | 2.22emu/g | 33Oe | 2.96MPa | 208.64% |
From the test result analysis of table 1 it is found that the magnetic silicon that the magnetic silicon rubber formula of the application is formed after being heating and curing
Rubber has preferable magnetic performance, while the magnetic silicon rubber also has preferable mechanical property.
Claims (10)
1. a kind of magnetic silicon rubber formula, which is characterized in that press mass parts number scale, composition are as follows:
Both-end vinyl silicone oil, 100 parts；
Containing hydrogen silicone oil, 30 parts~50 parts；
Magnetic powder, 2 parts~25 parts；
Silane coupling agent, 0.5 part~5 parts；
Gas-phase silica, 0 part~2 parts；
The magnetic silicon rubber formula further includes curing agent and inhibitor, and the curing agent is in magnetic silicon rubber formula
Content is 500ppm~2000ppm, and the content of the inhibitor is that the magnetic silicon rubber is formulated the 3%~10% of gross mass.
2. magnetic silicon rubber formula according to claim 1, which is characterized in that the viscosity of the both-end vinyl silicone oil is
5000mPas~100000mPas.
3. magnetic silicon rubber formula according to claim 2, which is characterized in that the both-end vinyl silicone oil is selected from viscosity
For the both-end vinyl silicone oil of 5000mPas, viscosity be 10000mPas both-end vinyl silicone oil, viscosity be
Both-end vinyl silicone oil that the both-end vinyl silicone oil of 20000mPas, viscosity are 50000mPas, viscosity are
At least two in the both-end vinyl silicone oil of 100000mPas, it is preferable that the both-end vinyl silicone oil is by viscosity
Both-end vinyl silicone oil that the both-end vinyl silicone oil of 5000mPas, viscosity are 10000mPas, viscosity 20000mPa
The both-end that both-end vinyl silicone oil that the both-end vinyl silicone oil of s, viscosity are 50000mPas, viscosity are 100000mPas
Vinyl silicone oil composition.
4. magnetic silicon rubber formula according to claim 1, which is characterized in that the mass content of hydrogen in the containing hydrogen silicone oil
For 0.18wt%~1.0wt%.
5. magnetic silicon rubber formula according to claim 4, which is characterized in that the quality that the containing hydrogen silicone oil is selected from hydrogen contains
Amount be the containing hydrogen silicone oil of 0.18wt%, the containing hydrogen silicone oil that the mass content of hydrogen is 0.3wt%, hydrogen mass content be 0.5wt%
Containing hydrogen silicone oil, hydrogen mass content be 1.0wt% containing hydrogen silicone oil at least two, it is preferable that the containing hydrogen silicone oil by
The mass content of containing hydrogen silicone oil, hydrogen that the mass content of containing hydrogen silicone oil, hydrogen that the mass content of hydrogen is 0.18wt% is 0.3wt%
The containing hydrogen silicone oil composition for being 1.0wt% for the containing hydrogen silicone oil of 0.5wt%, the mass content of hydrogen.
6. magnetic silicon rubber formula according to claim 1, which is characterized in that the average grain diameter of the magnetic powder is
30nm~100nm.
7. magnetic silicon rubber formula according to claim 1, which is characterized in that the magnetic powder is selected from four oxidations three
One or both of iron, carbonyl iron dust.
8. magnetic silicon rubber formula according to claim 1, which is characterized in that
The silane coupling agent is selected from one or both of KH-570, KH-560；
The inhibitor is selected from organic silicon inhibitor, it is preferable that the organic silicon inhibitor inhibits selected from maleic acid esters
Agent；
The curing agent is selected from platinum catalyst, it is preferable that the platinum catalyst is selected from one of platinum water, chloroplatinic acid or two
Kind.
9. a kind of magnetic silicon rubber, which is characterized in that the magnetic silicon rubber is by magnetism of any of claims 1-8
Silicone rubber formulations are by being heating and curing to be formed.
10. magnetic silicon rubber according to claim 9, which is characterized in that the magnetic silicon rubber formula is first heated to 80
DEG C~100 DEG C, then isothermal curing 1.5h~2.5h, is then again heated to 100 DEG C~120 DEG C, later isothermal curing 1.5h~
2.5h, after obtain the magnetic silicon rubber.
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| CN110878177A (en) * | 2019-11-21 | 2020-03-13 | 庄明磊 | Special pigment carbon black dye and preparation method thereof |
| CN109880377B (en) * | 2019-03-14 | 2021-11-12 | 浙江三元电子科技有限公司 | Silica gel/carbonyl iron powder composite broadband wave absorbing plate and preparation method thereof |
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| CN109880377B (en) * | 2019-03-14 | 2021-11-12 | 浙江三元电子科技有限公司 | Silica gel/carbonyl iron powder composite broadband wave absorbing plate and preparation method thereof |
| CN110878177A (en) * | 2019-11-21 | 2020-03-13 | 庄明磊 | Special pigment carbon black dye and preparation method thereof |
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