CN110437624A - A kind of novel transparent bifunctional epoxy resin-silicon rubber block network material - Google Patents
A kind of novel transparent bifunctional epoxy resin-silicon rubber block network material Download PDFInfo
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- CN110437624A CN110437624A CN201910884646.3A CN201910884646A CN110437624A CN 110437624 A CN110437624 A CN 110437624A CN 201910884646 A CN201910884646 A CN 201910884646A CN 110437624 A CN110437624 A CN 110437624A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The present invention provides a kind of transparent block network epoxy resin-silicon rubber modified materials of excellent combination property, it is prepared by the raw material of following portions by weight: 100.00 parts of silicon rubber, 1.00~20.00 parts of bifunctional epoxy resin, 3.00~50.00 parts of containing hydrogen silicone oil, 0~1.00 part of rubber additive, wherein, the bifunctional epoxy resin includes simultaneously epoxy group and vinyl.Epoxy of the invention-silicon rubber modified material, its tensile strength, elongation at break, adhesive property are obviously improved compared to pure silicone rubber, and maintain the transparent performance of silicon rubber, it can be applied not only to the fields such as high-temperaure coating, adhesive, casting glue, rubber and the flexible basis material of resistance to ablation in the fields such as aerospace, electronic information, mechanized equipment, it is excellent can also to be applied to fields, the application prospects such as solar panel clear coat, LED encapsulation material.
Description
Technical field
The invention belongs to macromolecule modified Material Fields, and in particular to a kind of novel transparent bifunctional epoxy resin-silicon rubber
Glue block network material.
Background technique
Silicon rubber is that a kind of strand has both inorganic and organic nature macromolecular material.Due to its structure and composition
Particularity, silastic material has the excellent properties that cannot be provided simultaneously with of many other materials, such as high-low temperature resistant of brilliance
Property, the good transparency, excellent oil resistant, solvent resistant, resistance to ultraviolet, radiation resistance, excellent electrical insulating property and chemical stabilization
Property and the advantages that physiological inertia, be widely used at present Aeronautics and Astronautics, electronics, machinery, machinery equipment, it is biomedical and
The fields such as organic coating industry.In recent years, silicon rubber is also extensively used for the transparent painting of LED encapsulation material, solar panel
The optical fields such as layer.However, intermolecular force is low since silicone rubber matrix lacks polar group, cohesive strength is low, in external force
Destruction is easily deformed under effect, causes its tensile strength low, and elongation at break is low, and adhesive property is bad, heat resistance
It is poor, significantly limit its application.Silicon rubber is modified to improve the performances such as its intensity, toughness, becomes the heat of research
Point.
The most common method of modifying of silicon rubber is that filler enhancing is modified.Filler enhancing is modified to be directed to add in silicone rubber matrix
Enter reinforced filling, extending fillers, heat-resistant filler etc. to promote the comprehensive performance of silicon rubber.But the introducing meeting of filler is so that matrix
Viscosity increase it is fairly obvious, be unfavorable for practice of construction use；The compatibility of filler and organic silicon rubber matrix is poor simultaneously, because
And the addition of filler will greatly affect the transparency of modified silicon rubber.Other methods have surface treatment modified and third are added
Component expanding material etc., but these methods can only often promote the polarity and adhesive property of material, cannot effectively improve silicon rubber
The performance of matrix such as mechanical property and thermal stability.
Another common silicon rubber method of modifying is matrix chemical modification, and matrix chemical modification is set by molecular structure
Meter, it is with good stability come modified silicon rubber material in the way of grafting, block, formation inierpeneirating network structure etc., it can show
Write the comprehensive performance for promoting material.The material for being commonly used to modified silicon rubber has polyurethane, polymethyl methacrylate, polypropylene
Nitrile, epoxy resin etc..Wherein epoxy resin is as a kind of excellent high intensity thermosetting resin, by with being widely used for modified silicon rubber
Glue material.Rigidity that epoxy resin has by it, polar group can effectively promote the cohesive strength of silicon rubber, synchronous to improve
Its adhesive property.However since the solubility parameter of epoxy resin and silicon rubber differs greatly, the compatibility of the two is very poor, directly
The two blending be will appear into macroface separation, cause material property to be promoted less and lose material transparent.
Such as application No. is 201510790367.2, entitled " the modified room temperature vulcanized silicone rubbers of bisphenol A epoxide resin
And preparation method thereof " patent disclose a kind of modified silicon rubber of bisphenol A type epoxy resin, effectively increase the strong of material
Degree, adhesive property, but the elongation at break of material is declined, and modified silastic material becomes opaque, the party
It still needs further improvement for the comprehensive performances such as toughness, the transparency of modified silicon rubber made from method.So if can further mention
The comprehensive performances such as toughness, the transparency of epoxy-modified silicon rubber are risen, it will be in aerospace, electronic information, mechanized equipment and thoroughly
The fields such as bright coating and encapsulation have broader practice prospect.
Summary of the invention
The object of the present invention is to provide a kind of transparent epoxy resin of excellent combination property-silicon rubber block network materials
Material.
The present invention provides a kind of transparent block network epoxy resin-silicon rubber modified materials, it is by following weight parts
Several raw materials are prepared:
100.00 parts of silicon rubber, 1.00~20.00 parts of bifunctional epoxy resin, 3.00~50.00 parts of containing hydrogen silicone oil, rubber
0~1.00 part of additive, wherein the bifunctional epoxy resin includes simultaneously epoxy group and vinyl.
Further, the structure of the bifunctional epoxy resin are as follows:
N is 0 or 1.
Further, the epoxide number of the bifunctional epoxy resin is 0.283~0.406mol/100g；Preferably
0.406mol/100g。
Further, the rubber additive is catalyst and the mixture for being catalyzed delayed-action activator；Preferably, the catalyst
For platinum catalyst, the catalysis delayed-action activator is -3 crotonylene alcohol of 2- methyl, the parts by weight of the catalyst and catalysis delayed-action activator
Than for 4:1；
And/or the containing hydrogen silicone oil is Methyl Hydrogen Polysiloxane Fluid.
Further, the modified material is prepared by the raw material of following portions by weight: 100.00 parts of silicon rubber, double
1.00~10.00 parts of functional epoxy resins, 7.45~40.60 parts of containing hydrogen silicone oil, 0.25 part of rubber additive.
Further, the modified material is prepared by the raw material of following portions by weight: 100.00 parts of silicon rubber, double
5.00 parts of functional epoxy resins, 22.20 parts of containing hydrogen silicone oil, 0.25 part of rubber additive.
The present invention also provides a kind of bifunctional epoxy resin, structure is as follows:
N is 0 or 1；The epoxide number of the bifunctional epoxy resin is 0.406mol/100g.
Epoxide number refers to the amount of the substance of contained epoxy group in 100g epoxy resin.
Epoxy of the invention-silicon rubber modified material overcomes the prior art and is difficult to take into account the transparency and mechanical strength etc.
The problem of performance, not only good mechanical performance, tensile strength are up to 1.67Mpa, improve 391.18% compared to pure sample, shearing
Intensity is 1.14MPa, improves 200% compared with pure sample, and elongation at break improves 78.11% up to 293.7%, compared to pure sample, and
And the transparency is also maintained well.
Compared with the epoxy-modified silicon rubber disclosed in the prior art, it is strong that the epoxy-modified silicon rubber of the present invention has taken into account stretching
The transparency of degree, elongation at break, adhesive property and material can be applied not only to aerospace, electronic information, mechanical dress
The standby high-temperaure coating for waiting fields, adhesive, casting glue, rubber and flexible basis material of resistance to ablation etc., can also be applied to
The fields such as solar panel clear coat, LED encapsulation material, compared to common opaque epoxy-silicon rubber modified material
Application range it is broader.Obviously, above content according to the present invention, according to the ordinary technical knowledge and strong hand of this field
Section can also make the modification, replacement or change of other diversified forms under the premise of not departing from above-mentioned basic fundamental thought of the invention
More.
The specific embodiment of form by the following examples remakes further specifically above content of the invention
It is bright.But the range that this should not be interpreted as to the above-mentioned theme of the present invention is only limitted to example below.It is all to be based on above content of the present invention
The technology realized all belongs to the scope of the present invention.
Detailed description of the invention
Fig. 1 is the Fourier transform infrared spectrogram of bifunctional epoxy resin DABPA prepared by the embodiment of the present invention 1.
Fig. 2 is the nucleus magnetic hydrogen spectrum figure of bifunctional epoxy resin DABPA prepared by the embodiment of the present invention 1.
Fig. 3 is the nuclear-magnetism carbon spectrogram of bifunctional epoxy resin DABPA prepared by the embodiment of the present invention 1.
Fig. 4 is the stretching and adhesive property test result of each sample.
Fig. 5 is the bond failure face shape appearance figure of each sample.
Fig. 6 is the thermogravimetic analysis (TGA) figure of each sample.
Fig. 7 is that the SEM of each sample quenches disconnected test chart.
Fig. 8 is loss tangent (tan the δ)-temperature relation figure (a) and storage modulus-temperature relation figure (b) of each sample.
Fig. 9 is the water contact angle of each sample.
Figure 10 is the solidified sample optical photograph of the transparent bifunctional epoxy resin-silicon rubber block network material of the present invention.
Specific embodiment
The raw materials used in the present invention and equipment are known product, as obtained by purchase commercial product.
Wherein, silicon rubber (vinyl silicone oil, viscosity 6000-10000cst, contents of ethylene 0.08-0.14Wt%), contains
Hydrogen silicone oil (HS, Si-H content 0.33-0.37mol/100g).
The structural formula of part material is as follows:
Vinyl silicone oil
Containing hydrogen silicone oil
The synthesis of embodiment 1, bifunctional epoxy resin DABPA
DABPA
Solid caustic soda method: by epoxychloropropane (ECH, 1mol), diallyl bisphenol (DADGEBA, 0.1mol), tetramethyl bromide
Change ammonium (0.006mol) to be added in three-necked flask together, is stirred to react 2h at 100 DEG C.Then 85 DEG C are cooled to, is added
0.2mol sodium hydrate solid is then evaporated under reduced pressure out excessive epoxychloropropane with rotary evaporator in 85 DEG C of reaction 2h.It will
Reaction solution pours into separatory funnel, and the xylene soluble crude product of appropriate 50mL is added, then is washed with deionized water, and removes lower water
Layer, 5% sodium hydroxide solution, 85 DEG C of reaction 2h are added into crude product, and processing residual hydrolyzable chlorine removes water layer, tried with ph
Paper examines acid-base property, then in 2% sodium dihydrogen phosphate and organic phase is to neutrality, washes and remove water layer, finally revolving removing
Bifunctional epoxy resin DABPA is made in dimethylbenzene.
The preparation of embodiment 2, the transparent bifunctional epoxy resin-silicon rubber block network material of the present invention
According to feed ratio shown in table 1, transparent bifunctional epoxy resin-silicon rubber block network material of invention is prepared
DADGEBA-1p,DADGEBA-3p,DADGEBA-5p,DADGEBA-10p.Specific step is as follows:
Bifunctional epoxy resin DABPA made from embodiment 1 is added in silicon rubber, in 80 DEG C of stirring 1h, is cooled to room
Wen Hou is sequentially added containing hydrogen silicone oil (HS), and catalyst (Pt) and catalysis -3 crotonylene alcohol (MBO) of delayed-action activator 2- methyl, room temperature is stirred
After mixing 15min, 10min is steeped in vacuum degassing, is subsequently poured into mold, by successively at 90 DEG C 2h, 2h at 120 DEG C, 2h at 140 DEG C,
The condition of 2h solidifies the transparent bifunctional epoxy resin to get invention-silicon rubber block network material at 180 DEG C.
It can be seen that transparent bifunctional epoxy resin-silicon rubber produced by the present invention from Figure 10 solidified sample optical photograph
Block network material is transparent material.
The transparent bifunctional epoxy resin of table 1.-silicon rubber block network material feed ratio
The preparation of reference examples 1, control sample
Control sample Pure silicone is prepared using method same as Example 2 according to feed ratio shown in table 1.
Beneficial effects of the present invention are proved below by way of experimental example.
Experimental example 1, bifunctional epoxy resin structural characterization
(1) experimental method
Infrared, nucleus magnetic hydrogen spectrum is respectively adopted, nuclear-magnetism carbon spectrum carries out bifunctional epoxy resin DABPA made from embodiment 1
Characterization.
(2) experimental result
As a result as shown in Figs. 1-3.In infrared spectrum (Fig. 1), the hydroxyl peak of DADGEBA obviously disappears, and 850,914cm-1Place
The appearance of epoxy group, 723cm-1The peak of carbon chlorine key disappears, and illustrates that diallyl bisphenol is reacted with epoxychloropropane.Core
In magnetic hydrogen spectrum and nuclear-magnetism carbon spectrum (Fig. 2, Fig. 3), the correspondence peak of each hydrogen atom and carbon atom in DABPA can be also found respectively.On
It states result and illustrates that bifunctional epoxy resin DABPA has successfully been made in the present invention.
Experimental example 2, bifunctional epoxy resin epoxide number test
(1) experimental method
It is titrated using hydrochloric acid acetone method:
A, the sodium hydroxide solution of 0.1mol/L is configured；
The sodium hydrate methanol solution of 0.1mol/L；
Cresol red indicator: 0.1g cresol red is dissolved in 50% ethyl alcohol 100ml and configures；
Neutral alcohol: 1ml cresol red indicator is added in 100ml ethyl alcohol, with the sodium hydroxide methanol of 0.1mol/L
Solution neutralizes；
B, 0.5-1g epoxy specimens are weighed in conical flask, draw 20ml hydrochloric acid acetone soln, sufficiently shaking up makes to try
Sample dissolution, places 15min at room temperature, and neutral alcohol 20ml is added, and then uses the excessive salt of 0.1mol/L sodium hydroxide titration
Acid.Cresol red indicator first turns yellow in ethyl alcohol acetone soln from pink, and it is whole for titration then to gradually become purple
Point.
C, epoxide number calculates
CN=100 (V1-V2) L/100m
Wherein, it is the hydrochloric acid third that epoxy resin is added in titration that V1, which is sodium hydroxide volume ml, V2 needed for titrating blank reagent,
Sodium hydroxide volume ml needed for ketone solution, L are naoh concentration mol/L, and m is the asphalt mixtures modified by epoxy resin being added into hydrochloric acid acetone soln
The quality of rouge
(2) experimental result
The results are shown in Table 2, it can be seen that the epoxide number of bifunctional epoxy resin made from the embodiment of the present invention 1 is
0.406。
The epoxide number of 2 bifunctional epoxy resin of table
Experimental example 3, the Mechanics Performance Testing of transparent bifunctional epoxy resin-silicon rubber block network material
1, experimental method
(1) tensile strength and elongation at break: according to ISO 37:2011 standard, using Instron (Instron 5567,
Instron, the U.S.) universal tensile testing machine is with the tensile strength and extension at break of the velocity test solidified sample of 500mm/min
Rate.
(2) adhesive property is tested: according to iso standard 4587:2003, with Instron 5567 with the rate pair of 5mm/min
Solidified sample carries out adhesion test.Five samples of all result average out to.
2, experimental result
Test result is as shown in Fig. 4, table 3, it can be seen that compared with Pure silicone sample, ring prepared by the present invention
Oxygen-silicon rubber block network material not only increases tensile strength, shear strength, and elongation at break also significantly improves, and illustrates this
Epoxy-silicon rubber the modified material for inventing preparation can significantly improve on tensile strength, toughness and adhesive property simultaneously.And
Epoxy prepared by the present invention-silicon rubber modified material with the increase of DADGEBA additive amount, stretch by the tensile strength of material and fracture
The regularity variation for first rising and declining afterwards is all presented in long rate；And adhesive property is then as the addition of DADGEBA is gradually promoted.Its
In, the tensile strength of DADGEBA-5p is up to 1.67Mpa, improves 391.18% compared to Pure silicone sample, fracture is stretched
Long rate improves 78.11% up to 293.7%, compared to Pure silicone sample；DADGEBA-10p shear strength is
1.19MPa improves 292% compared with Pure silicone.
The transparent bifunctional epoxy resin of table 3-silicon rubber block network material mechanical experimental results
Experimental example 4, transparent bifunctional epoxy resin-silicon rubber block network material bond failure face pattern test
1, experimental method
According to ISO 4587:2003 standard, solidified sample is bonded with the speed of 5mm/min by Instron 5567
Test.5 samples of all result average out to.After carrying out failure by shear test, the pattern of failure mechanics is directly shot.
2, experimental result
Test results are shown in figure 5, it can be seen that pure silicone rubber Pure silicone and epoxy resin of the present invention-silicon rubber
Transparence is presented in the shear breakage of glue modified sample.Further it can be seen that the bond failure of control sample Pure silicone
Interface is surfacing, and almost without sizing material from interface peel, happens is that cohesional failure, i.e., occur broken first inside colloid
It splits, this is because caused by its sizing material bulk strength is lower.And the epoxy of preparation of the invention-silicon rubber modified material shearing is broken
Bad face is also more smooth, but a degree of fold and fluctuating occurs, it can be seen that sizing material was mainly presented is cohesional failure, together
When have a little sizing material from interface peel, this illustrates that the sizing material of modified material is preferable to the adhesive force of substrate, the shear strength of material
It is primarily limited to the bulk strength of sizing material.
Experimental example 5, the thermogravimetic analysis (TGA) (TGA) of transparent bifunctional epoxy resin-silicon rubber block network material
1, experimental method
Using thermogravimetric analyzer (TG 209F1 IRIS, German Nai Chi company) under a dry nitrogen atmosphere to solidified sample
Thermal stability be tested.Gas flow rate is 60 ml/mins, and heating speed is 10 degrees celsius/minutes, and temperature range is
50 to 800 degrees Celsius.
2, experimental result
Test result is as shown in Fig. 6 and table 4, it can be seen that compared with DADGEBA-3p, DADGEBA-5p, DADGEBA-
The thermal stability of 1p is more preferable.
The transparent bifunctional epoxy resin of table 4-silicon rubber block network material TGA test result
Experimental example 6, transparent bifunctional epoxy resin-silicon rubber Acrylic Polymer Interpenetrating Polymer SEM, which quench to break, to be tested
1, experimental method
It is obtained under 10 kilovolts of acceleration voltages with scanning electron microscope (scanning electron microscope, JSM-5900, Japanese Jie Er)
The cross-sectional structure of solidified sample.All samples impregnate 12 hours or more in liquid nitrogen, plane of disruption metal spraying.
2, experimental result
As shown in Figure 7, it can be seen that pure silicone rubber and the transparent bifunctional epoxy resin-silicon rubber modified material of the present invention
Surface shows smooth surface, but modified material of the present invention is quenched, cross-sectional face does not occur apparent island structure point
Dephasing illustrates that the compatibility between bifunctional epoxy resin and silicone rubber matrix significantly improves.
Experimental example 7, transparent bifunctional epoxy resin-silicon rubber Acrylic Polymer Interpenetrating Polymer dynamic thermomechanical analysis (DMA)
1, experimental method
The glass transition temperature of solidified sample is recorded in TA instrument (TA instrument Q800 instrument, the U.S.).Experiment condition
For the rate of heat addition of 3 DEG C/min, from -140 to 200 DEG C, the frequency under stretch mode is 1hz, and straining is 0.2%.
2, experimental result
Test result is as shown in Fig. 8 and table 5.It can be seen that pure silicone rubber and transparent difunctionality produced by the present invention from Fig. 8 a
There is glass transition, and transparent bifunctional epoxy resin-silicon rubber at -110 DEG C or so in epoxy resin-silicon rubber modified material
There is the trend slightly to move right compared to the glass transition temperature of pure silicone rubber in glue modified material, this illustrates epoxy segment
Introducing portion inhibit the mobility of silicon rubber segment, pure silicone rubber and transparent bifunctional epoxy resin-silicon rubber are modified
All there is crystalline melting transition peak at -50 DEG C or so in material；However for transparent bifunctional epoxy resin-silicon rubber modified material
For, the glass transition peak of epoxy is not observed in high-temperature area, this illustrates that epoxy is evenly dispersed in silicone rubber matrix.And
For Fig. 8 b, it can be seen that the storage modulus of material becomes larger with the addition of bifunctional epoxy resin；According to rubber bullet
Property it is theoretical, the crosslinking that more than glass transition temperature of material storage modulus corresponding to 40 DEG C of temperature can reflect out material is close
Degree.Each crosslink material density being calculated according to rubber elasticity theory is as shown in table 5, it can be seen that with difunctional epoxide
The crosslink density of the increase of resin, modified material constantly rises.
The transparent bifunctional epoxy resin of table 5-silicon rubber block network material DMA test result
Experimental example 8, transparent bifunctional epoxy resin-silicon rubber Acrylic Polymer Interpenetrating Polymer contact angle test
1, experimental method
The contact angle of solidified sample is tested by DSA 30 (KRUS3, Germany) type contact angle analyzer.Make at 25 DEG C
It is tested with sessile drop method.Each test result is the average value of 5 test samples.
2, experimental result
Test results are shown in figure 9.As can be seen that compared with compareing Pure silicone sample, ring produced by the present invention
Oxygen resin-silicon rubber modified material contact angle is smaller, and with the increase of DADGEBA additive amount in modified material and under
Drop.Illustrate that epoxy resin of the invention-silicon rubber modified material hydrophily improves.
To sum up, transparent difunctional epoxide-silicon rubber modified material of the invention, tensile strength, elongation at break, bonding
Performance is obviously improved compared to pure sample, and maintains the transparent performance of silicon rubber, can be applied not only to aerospace, e-mail
The fields such as high-temperaure coating, adhesive, casting glue, rubber and the flexible basis material of resistance to ablation in the fields such as breath, mechanized equipment,
It is fine can also to be applied to fields, the application prospects such as solar panel clear coat, LED encapsulation material.
Claims (7)
1. a kind of transparent block network epoxy resin-silicon rubber modified material, it is characterised in that: it is by following portions by weight
Raw material is prepared:
100.00 parts of silicon rubber, 1.00~20.00 parts of bifunctional epoxy resin, 3.00~50.00 parts of containing hydrogen silicone oil, rubber addition
0~1.00 part of agent, wherein the bifunctional epoxy resin includes simultaneously epoxy group and vinyl.
2. transparent block network epoxy resin-silicon rubber modified material according to claim 1, it is characterised in that: described
The structure of bifunctional epoxy resin are as follows:
N is 0 or 1.
3. transparent block network epoxy resin-silicon rubber modified material according to claim 2, it is characterised in that: described
The epoxide number of bifunctional epoxy resin is 0.283~0.406mol/100g；Preferably 0.406mol/100g.
4. transparent block network epoxy resin-silicon rubber modified material according to claim 1, it is characterised in that: described
Rubber additive is catalyst and the mixture for being catalyzed delayed-action activator；Preferably, the catalyst is platinum catalyst, and the catalysis is prolonged
Slow agent is -3 crotonylene alcohol of 2- methyl, and the catalyst and the weight fraction ratio for being catalyzed delayed-action activator are 4:1；
And/or the containing hydrogen silicone oil is Methyl Hydrogen Polysiloxane Fluid.
5. transparent block network epoxy resin-silicon rubber modified material according to claim 1-4, feature exist
In: the modified material is prepared by the raw material of following portions by weight: 100.00 parts of silicon rubber, bifunctional epoxy resin
1.00~10.00 parts, 7.45~40.60 parts of containing hydrogen silicone oil, 0.25 part of rubber additive.
6. transparent block network epoxy resin-silicon rubber modified material according to claim 5, it is characterised in that: described
Modified material is prepared by the raw material of following portions by weight: 100.00 parts of silicon rubber, 5.00 parts of bifunctional epoxy resin, being contained
22.20 parts of hydrogen silicone oil, 0.25 part of rubber additive.
7. a kind of bifunctional epoxy resin, structure are as follows:
N is 0 or 1；The epoxide number of the bifunctional epoxy resin is 0.406mol/100g.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113185842A (en) * | 2021-06-08 | 2021-07-30 | 北京航空航天大学 | Epoxy resin-silicon rubber polymer with interpenetrating network structure and preparation method thereof |
| CN115785398A (en) * | 2022-11-24 | 2023-03-14 | 四川大学 | Organic silicon synergistically modified epoxy resin and preparation method and application thereof |
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| JPH09111127A (en) * | 1995-10-20 | 1997-04-28 | Shin Etsu Chem Co Ltd | Curable silicone rubber composition, cured product therefrom, and semiconductor device sealed therewith |
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