CN109021235A - A kind of low dielectric bismaleimide resin system - Google Patents
A kind of low dielectric bismaleimide resin system Download PDFInfo
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- CN109021235A CN109021235A CN201810977245.8A CN201810977245A CN109021235A CN 109021235 A CN109021235 A CN 109021235A CN 201810977245 A CN201810977245 A CN 201810977245A CN 109021235 A CN109021235 A CN 109021235A
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- polyphenylene oxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/12—Unsaturated polyimide precursors
- C08G73/124—Unsaturated polyimide precursors the unsaturated precursors containing oxygen in the form of ether bonds in the main chain
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/12—Unsaturated polyimide precursors
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/10—Encapsulated ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention discloses a kind of low dielectric bismaleimide resin systems, using bismaleimide, allyl compound, mesoporous silicon oxide, polyphenylene oxide as raw material, by preparing the coating mesoporous silica of polyphenylene oxide, and bismaleimide resin system is applied it to, prepare low dielectric high-performance bismaleimide resin system;Method disclosed by the invention has the characteristics that simple process, applicability are wide, and prepared material has a wide range of applications potentiality in Aeronautics and Astronautics and electronic field.
Description
The present invention is entitled a kind of low dielectric bismaleimide resin system and preparation method thereof, the applying date is
On December 9th, 2016, application No. is the divisional applications of 2016111327196 patent applications, belong to product technology part.
Technical field
The invention belongs to high-performance resin matrix technical fields, are related to a kind of low dielectric high performance resin based composites,
More particularly to a kind of low dielectric bismaleimide resin system.
Background technique
Bismaleimide resin system is a kind of typical high-performance thermosetting resin, have excellent mechanical property,
Hot property and electrical property etc. have application potential outstanding in Aeronautics and Astronautics field of electronic materials.With microelectric technique
High speed development, the performance of existing bismaleimide resin system material are no longer satisfied high integration, the high property of more low-power consumption
The development of energy electronic product, this just needs to develop more excellent performance of low dielectric high-performance bismaleimide resin system.
Using inorganic particulate to the bi-maleimide modified easy mechanical property and hot property for improving bimaleimide resin, but not
The dielectric properties of material can be substantially reduced.Mesoporous silicon oxide is a kind of inorganic material with pore structure, is had great
Specific surface area, a large amount of Si~O~Si segment and silicone hydroxyl abundant, thus its for design have mechanical property outstanding,
The material of heat resistance and dielectric properties (dielectric constant about 1.5~1.7) provides advantage.Regrettably, although mesoporous two
The material of silica can be obviously improved the mechanical property even hot property of polymer matrix composites, but there is no sufficiently hairs
Its low-dielectric energy advantage is waved, reason is that during material forming process, small-molecule substance can penetrate into silica
In mesoporous, to be unable to fully utilize its low-dielectric energy.Further, since mesoporous silicon oxide has high specific surface area,
The viscosity that can obviously increase resin system is added, resin forming craftsmanship is caused to be deteriorated.Therefore, how to mesoporous silicon oxide
It is mesoporous effectively to be sealed, and not appreciably affect under its low-dielectric energy and resin forming process conditions for promoting its low dielectric
Performance applications have positive effect.Polyphenylene oxide (PPO) is a kind of important High performance plastic resin, possesses higher glass
Change transition temperature (Tg=210 DEG C), good heat resistance and dimensional stability, higher toughness, lower hydroscopicity, although PPO
Addition can reduce the dielectric properties of aathermoset resin system to a certain extent, still, high level PPO addition can reduce tree
Crosslink density or the other performance such as intensity of resin system and heat resistance etc., and PPO is used alone to reduce thermosetting resin body
The dielectric properties effect of system is poor.
Summary of the invention
The purpose of the present invention is to provide a kind of low dielectric bismaleimide resin systems and preparation method thereof, will have
Mesoporous sealing of the material of low dielectric to mesoporous silicon oxide is conducive to the low-dielectric energy for maintaining mesoporous silicon oxide, thus
Promote it in the application for developing dielectric materials field.
In order to achieve the above object, the technical solution adopted by the present invention is that: a kind of low dielectric bismaleimide resin
The preparation method of system, comprising the following steps: bismaleimide and allyl compound are heated to clear solution, are then added
The coating mesoporous silicon dioxide granule of polyphenylene oxide, stirs to get performed polymer;Then performed polymer is poured into mold, in 130~150 DEG C
Vacuumize 30~40min;Then solidified at 150~230 DEG C of temperature, obtain low dielectric bismaleimide resin
System.
In the above technical solution, raw material components and quality proportioning are 100 parts of bismaleimide;Allyl compound 50
~100 parts;2~8 parts of the coating mesoporous silica of polyphenylene oxide.
In the above technical solution, bismaleimide and allyl compound are heated with stirring at 130~140 DEG C
Bright solution;It is low dielectric bismaleimide resin system that natural cooling, which obtains solidfied material, after solidification 7~9 hours.
In the above technical solution, the bismaleimide is dimaleoyl imino diphenyl-methane, span carrys out acyl
Two methyl phenyl ethers anisole of imido grpup.
In the above technical solution, the allyl compound is diallyl bisphenol, diallyl bisphenol S, allyl
Base aralkyl phenol, polyallyl ether ketone, allyl phenol epoxy resin, N- allyl arylamine.
In the above technical solution, performed polymer is obtained in 130~150 DEG C of 30~50min of stirring.
In the above technical solution, polyphenylene oxide the preparation method of the coating mesoporous silicon dioxide granule of polyphenylene oxide: is dissolved in benzene
In class solvent, mesoporous silicon oxide is added, is added in the aqueous solution containing surfactant after stirring, forms oil-in-water system,
Stirring obtained the coating mesoporous silicon dioxide granule of polyphenylene oxide after 4~6 hours;The mass ratio of the polyphenylene oxide and mesoporous silicon oxide
For (1~3.3): 1.
In the above technical solution, the mass ratio of the preferred toluene of benzene kind solvent, polyphenylene oxide and benzene kind solvent is 1: (10~
18);Surfactant is neopelex, lauryl sodium sulfate, Monododecylphosphate potassium etc., contains surface
The mass concentration of surfactant is 0.1~0.3% in the aqueous solution of activating agent;Polyphenylene oxide is polyphenylene oxide resin, including different points
The polyphenylene oxide resin and its modified polyphenylene ether resin of son amount are (such as: the polyphenylene oxide (PPO* that number-average molecular weight (Mn) is 17300
630) polyphenylene oxide (PPO* MX9000-111) for the ethenyl blocking that, Mn is 1100, Mn are the polyphenylene oxide of 2200 ethenyl blockings
(Noryl* SA9000)).Since polyphenylene oxide is not soluble in water, with the gradually volatilization of benzene solvent, the polyphenylene oxide at water oil phase interface
The surface that can deposit or be adsorbed on mesoporous silicon oxide is precipitated, sealing is mesoporous, and after the present invention stirs 4~6 hours, mixed liquor passes through
The coating mesoporous silicon dioxide granule of polyphenylene oxide, polyphenyl can be obtained in 4~6 hours in water washing, suction filtration, 100~120 DEG C of vacuum drying
Ether is wrapped in meso-porous titanium dioxide silicon face, keeps mesoporous SiO 2 structure, effectively prevent resin to enter in mesoporous, so as to send out
Wave its low-dielectric energy.
In the above technical solution, the aperture of the mesoporous silicon oxide is 2nm~9nm, and partial size is 20~100nm.
If specific surface area is 500~800m2/ g, two-dimensional channel, the mesopore silicon oxide (UC-S-1) that hexagonal mesoporous aperture is 7~9nm;
Specific surface area is 700m2/ g, 3 D pore canal, the mesopore silicon oxide (UC-S-3) that cubic mesoporous aperture is 6nm;Specific surface area is
1300m2/ g, two-dimensional channel, the mesopore silicon oxide (UC-S-6) that hexagonal mesoporous aperture is 2nm.
Preferably, cured technique is 150 DEG C/2h+180 DEG C/2h+200 DEG C/2h+220~230 DEG C/2h.Of the invention
On the one hand preparation method successfully solves the problems, such as that existing inorganic material increases thermosetting material viscosity, so that thermosetting resin is tieed up
Hold good craftsmanship;On the other hand, under curing process of the invention, each component step-reaction in BMI performed polymer is formed excellent
Different interfacial adhesion solves the problems, such as existing organic-inorganic two-phase poor compatibility;To which the low dielectric span of preparation carrys out acyl
Imide resin material has good mechanical property, while keeping good hot property.
Invention additionally discloses the low dielectric bismaleimide resin system prepared according to the above method, room temperature dielectric constants
Down to 2.6, dielectric loss shows apparent application potential down to 0.012, in field of electronic materials.
Further, the invention also discloses a kind of preparation method of performed polymer, include the following steps, by bismaleimide
Amine and allyl compound are heated to clear solution, the coating mesoporous silicon dioxide granule of polyphenylene oxide are then added, in 130~150
DEG C stirring 30~50min obtain performed polymer;Being prepared as the coating mesoporous silicon dioxide granule of polyphenylene oxide, polyphenylene oxide is dissolved in
In benzene kind solvent, mesoporous silicon oxide is added, is added in the aqueous solution containing surfactant after stirring, forms oil-in-water body
System, stirring obtained the coating mesoporous silicon dioxide granule of polyphenylene oxide after 4~6 hours;The matter of the polyphenylene oxide and mesoporous silicon oxide
Amount is than being (1~3.3): 1.
Invention additionally discloses the performed polymers prepared according to the above method and the performed polymer in preparing dielectric materials
Application.
Compared with prior art, the invention has the advantages that:
1. bismaleimide resin system material prepared by the present invention not only has excellent mechanical property and hot property, more
For it is important that having obvious low dielectric properties;Compared with the individually system of addition mesoporous silicon oxide and polyphenylene oxide, use
The mesoporous silicon oxide span system material for adding the polyphenylene oxide cladding containing equivalent has lower more stable dielectric properties,
Apparent application potential is shown in field of electronic materials;
2. the invention in mesoporous silicon oxide adsorption polyphenylene oxide, effectively seal mesoporous, bismaleimide be added
After in amine and allyl compound solution, avoids resin from entering mesoporous, can be provided safeguard for the low-dielectric of product, particularly,
The dielectric materials of preparation have good mechanical property, keep originally excellent hot property;
3. the preparation method of low dielectric bismaleimide resin system disclosed by the invention wide, operating procedure with applicability
Simple advantage;And the performed polymer of preparation can be applicable in the composite material preparation process such as casting, molding, answer suitable for industrialization
With.
Detailed description of the invention
Fig. 1 is the scanning electron microscope (SEM) photograph of 1 mesoporous silicon oxide of embodiment and the coating mesoporous silica of polyphenylene oxide;
Fig. 2 is 1 mesoporous silicon oxide of embodiment, polyphenylene oxide and the coating mesoporous silica infrared spectrum of polyphenylene oxide;
Fig. 3 is that the impact fracture surface SEM of 1 material of comparative example 1 and embodiment schemes;
Fig. 4 is the SEM figure of the mesoporous silicon oxide of 2 polyphenylene oxide of embodiment cladding;
Fig. 5 is that the impact fracture surface SEM of 2 material of comparative example 2 and embodiment schemes.
Specific embodiment
Below with reference to embodiment, technical solution of the present invention will be further described.
Embodiment 1
2g polyphenylene oxide (the ethenyl blocking polyphenylene oxide (PPO* MX9000-111) that number-average molecular weight is 1100) is dissolved completely in
In 25ml toluene, polyphenyl ethereal solution is obtained, the mesoporous silicon oxide (UC-S-1) of 0.6g is then added, is added to after being dispersed with stirring
In the aqueous solution for the 500ml lauryl sodium sulfate surfactant that mass concentration is 0.15%, oil-in-water system is formed.Due to
Polyphenylene oxide is not soluble in water, and with the gradually volatilization of toluene solvant, the polyphenylene oxide of precipitation can deposit or be adsorbed on mesoporous silicon oxide
Surface, seal it is mesoporous.Precipitate is washed after stirring 4 hours, filters, and polyphenylene oxide can be obtained in 4 hours in 120 DEG C of vacuum drying
Filling cladding Metaporous silicon dioxide material, wherein polyphenylene oxide and mesoporous silicon oxide material quality ratio are 3.3:1.Fig. 1 is to be situated between
Scanning electron microscope (SEM) photo of hole silica (left side), the coating mesoporous silica of polyphenylene oxide (right side);Fig. 2 is meso-porous titanium dioxide
Infrared (FTIR) spectrogram of silicon, polyphenylene oxide and the coating mesoporous silica of polyphenylene oxide.
50g dimaleoyl imino diphenyl-methane is heated with stirring to 50g diallyl bisphenol compound at 130 DEG C
Then the coating mesoporous silicon dioxide granule of 1g polyphenylene oxide is added in clear solution, about in 140 DEG C of pre-polymerization 50min under stirring condition, with
Prepolymer solution is poured into flat plate mold afterwards, about 30min is vacuumized at 140 DEG C, then again according to temperature program(me) 150
DEG C/2h+180 DEG C/2h+200 DEG C/2h+220 DEG C/2h solidified, curing materials are taken out from flat plate mold after natural cooling, are
Product of the present invention.
Comparative example 1
50g dimaleoyl imino diphenyl-methane is heated with stirring in 130oC with 50g diallyl bisphenol compound transparent
Prepolymer solution is then poured into flat plate mold, is taken out at 140 DEG C about in 140 DEG C of pre-polymerization 50min under stirring condition by solution
Then vacuum about 30min is solidified according to 150 DEG C/2h+180 DEG C/2h+200 DEG C/2h+220 DEG C/2h of temperature program(me) again,
Curing materials are taken out from flat plate mold after natural cooling.Fig. 3 is comparative example 1(left) and the right side embodiment 1() material prepared
The SEM of impact fracture section schemes, and table 1 is the performance parameter of 1 curing materials of 1 curing materials of embodiment and comparative example.
From Fig. 1 (left side) as can be seen that the surface of mesoporous silicon oxide can find micro-pore, but through polyphenylene oxide cladding
Due to the deposition of polyphenylene oxide, surface does not obviously observe the hole knot of mesoporous silicon oxide on the surface of mesoporous silicon oxide (right side)
Structure;Figure it is seen that the mesoporous silicon oxide of polyphenylene oxide cladding contains the characteristic absorption of polyphenylene oxide and mesoporous silicon oxide
Peak, this is proved on the mesoporous silicon oxide of polyphenylene oxide deposition;Fig. 3 is the SEM picture of the impact fracture section of material prepared, from
It can be seen that the material section that the coating mesoporous silica of polyphenylene oxide is added is coarse compared with pure resin system in right figure, illustrate that it has
Excellent mechanical property;As it can be seen from table 1 after the coating mesoporous silicon dioxide granule of polyphenylene oxide is added, the mechanical property of material
It is superior to pure resin system, in particular, the dielectric properties that the material of the mesoporous silicon oxide of polyphenylene oxide cladding is added obviously drop
Low, this is mainly that polyphenylene oxide and mesoporous silicon oxide have caused by low dielectric properties.
The performance parameter of 1 material of table
Performance | Comparative example 1 | Embodiment 1 |
Impact strength (KJ/m2) | 9.9 | 10.9 |
Fracture toughness (KIC)/MPa·m1/2 | 1.2 | 1.39 |
Bending strength/MPa | 111 | 137 |
5wt% weightlessness thermal decomposition temperature/DEG C (TGA method) | 416 | 418 |
Dielectric constant (room temperature, 102~106Hz) | 4.4~4.0 | 3.6~3.5 |
Dielectric loss (room temperature, 102~106Hz) | 0.014~0.08 | 0.013~0.019 |
Embodiment 2
2g polyphenylene oxide (polyphenylene oxide (PPO* MX9000-111) for the ethenyl blocking that number-average molecular weight is 1100) is completely dissolved
In 25ml toluene, polyphenyl ethereal solution is obtained, the mesoporous silicon oxide (UC-S-1) of 1.0g is then added, is added after being dispersed with stirring
In aqueous solution to mass concentration for 0.2% 500ml lauryl sodium sulfate surfactant, oil-in-water system is formed.Due to
Polyphenylene oxide is not soluble in water, and with the gradually volatilization of toluene solvant, the polyphenylene oxide of precipitation can deposit or be adsorbed on mesoporous silicon oxide
Surface, seal it is mesoporous.Precipitate is washed after stirring 5 hours, filters, and polyphenylene oxide can be obtained in 5 hours in 120 DEG C of vacuum drying
Filling cladding Metaporous silicon dioxide material, wherein polyphenylene oxide and mesoporous silicon oxide material quality score ratio are 2:1.Fig. 4 is
The SEM photograph figure of the mesoporous silicon oxide of polyphenylene oxide cladding.
50g dimaleoyl imino diphenyl-methane is heated with stirring to 50g diallyl bisphenol compound at 130 DEG C
Then the coating mesoporous silicon dioxide granule of 4g polyphenylene oxide is added in clear solution, about in 140 DEG C of pre-polymerization 50min under stirring condition,
Then prepolymer solution is poured into flat plate mold, about 30min is vacuumized at 140 DEG C, then again according to temperature program(me)
150 DEG C/2h+180 DEG C/2h+200 DEG C/2h+220 DEG C/2h is solidified, and takes out curing materials from flat plate mold after natural cooling.
Comparative example 2
50g dimaleoyl imino diphenyl-methane is heated with stirring at 130 DEG C with 50g diallyl bisphenol compound transparent
Solution is added 2.7g polyphenylene oxide under stirring condition and 1.3g mesoporous silicon oxide (is respectively equivalent to 4g polyphenylene oxide coating mesoporous two
The content of polyphenylene oxide and mesoporous silicon oxide in silica), about in 140 DEG C of pre-polymerization 50min, then prepolymer solution is poured into
In flat plate mold, about 30min is vacuumized at 140 DEG C, then again according to 150 DEG C/2h+180 DEG C/2h+200 of temperature program(me)
DEG C/2h+220 DEG C/2h solidified, curing materials are taken out from flat plate mold after natural cooling.Fig. 5 is comparative example 2(left) and
Embodiment 2(is right) the SEM figure of the impact fracture section of material prepared, table 2 is the performance of 2 material of embodiment 2 and comparative example
Parameter.
Figure 4, it is seen that due to the deposition of polyphenylene oxide, the pattern of the mesoporous silicon oxide of polyphenylene oxide cladding with it is mesoporous
Silica is significantly different (Fig. 1 is left);5 left and right of comparison diagram in resin system it can be found that be directly added meso-porous titanium dioxide
When silicon (left side), resin monomer can penetrate into its hole, and be added polyphenylene oxide cladding mesoporous silicon oxide (right side) when, it is found that
The mesoporous silicon oxide of fracture still has hole, this obviously helps the low-dielectric energy for giving full play to mesoporous silicon oxide;
Table 2 statistics indicate that, product of the invention is added polyphenylene oxide cladding and is situated between in addition to having very other than low-k and dielectric loss
Excellent in mechanical performance of the hole silicon dioxide granule material compared with the material for being individually added into equivalent polyphenylene oxide and mesoporous silicon oxide, original
Because may be good dispersion of the mesoporous silicon oxide in resin system due to polyphenylene oxide coating modification, and polyphenylene oxide cladding changes
The interfacial contact area of the meso-porous titanium dioxide silicon particle of property and resin system is compared with being individually added into polyphenylene oxide and mesoporous silicon oxide
It is few therefore small to matrix cross-linked network structure extent of the destruction.
The performance parameter of 2 material of table
Performance | Comparative example 2 | Embodiment 2 |
Impact strength (KJ/m2) | 10 | 12.5 |
Fracture toughness (KIC)/MPa·m1/2 | 1.7 | 1.9 |
Bending strength/MPa | 165 | 177 |
5wt% weightlessness thermal decomposition temperature/DEG C (TGA method) | 416 | 419 |
Dielectric constant (room temperature, 102~106Hz) | 3.6~3.5 | 2.9~3.2 |
Dielectric loss (room temperature, 102~106Hz) | 0.012~0.016 | 0.011~0.014 |
Embodiment 3
2g polyphenylene oxide (polyphenylene oxide (Noryl* SA9000) that number-average molecular weight is 2200 ethenyl blockings) is dissolved completely in
In 30ml toluene, polyphenyl ethereal solution is obtained, the mesoporous silicon oxide (UC-S-3) of 1.4g is then added, is added to after being dispersed with stirring
In the aqueous solution for the 500ml Monododecylphosphate potassium surfactant that mass concentration is 0.3%, oil-in-water system is formed.By
Not soluble in water in polyphenylene oxide, with the gradually volatilization of toluene solvant, the polyphenylene oxide of precipitation can deposit or be adsorbed on meso-porous titanium dioxide
The surface of silicon is filled or is sealed and is mesoporous.Precipitate is washed after stirring 6 hours, filters, and 120 DEG C of vacuum drying can obtain for 6 hours
Cladding Metaporous silicon dioxide material is filled to polyphenylene oxide, wherein polyphenylene oxide is with mesoporous silicon oxide material quality score ratio
1.43:1。
Two methyl phenyl ethers anisole of 50g dimaleoyl imino is heated with stirring at 130 DEG C with 30g diallyl bisphenol S transparent molten
Then the coating mesoporous silicon dioxide granule of 1.8g polyphenylene oxide is added in liquid, about in 140 DEG C of pre-polymerization 50min under stirring condition, then
Prepolymer solution is poured into flat plate mold, about 30min is vacuumized at 140 DEG C, then again according to 150 DEG C of temperature program(me)/
2h+180 DEG C/2h+200 DEG C/2h+230 DEG C/2h is solidified, and takes out curing materials from flat plate mold after natural cooling.
Comparative example 3
Two methyl phenyl ethers anisole of 50g dimaleoyl imino is heated with stirring in 130oC with 30g diallyl bisphenol S compound transparent
Prepolymer solution is then poured into flat plate mold, is taken out at 140 DEG C about in 140 DEG C of pre-polymerization 50min under stirring condition by solution
Then vacuum about 30min is solidified according to 150 DEG C/2h+180 DEG C/2h+200 DEG C/2h+230 DEG C/2h of temperature program(me) again,
Curing materials are taken out from flat plate mold after natural cooling.Table 3 is the performance parameter of 3 material of embodiment 3 and comparative example, from table 3
It can be seen that the mechanical property of material is superior to pure resin system after the coating mesoporous silicon dioxide granule of polyphenylene oxide is added.Especially
It is that the dielectric properties that the material for the mesoporous silicon oxide that polyphenylene oxide coats is added are substantially reduced, this is mainly what polyphenylene oxide coated
Mesoporous silicon oxide has caused by excellent mechanical property, hot property and low-dielectric energy.
The performance parameter of 3 material of table
Performance | Comparative example 3 | Embodiment 3 |
Impact strength (KJ/m2) | 13.5 | 15.7 |
Fracture toughness (KIC)/MPa·m1/2 | 1.3 | 2.1 |
Bending strength/MPa | 116 | 165 |
5wt% weightlessness thermal decomposition temperature/DEG C (TGA method) | 443 | 446 |
Dielectric constant (room temperature, 102~106Hz) | 4.2~4.0 | 2.7~3.1 |
Dielectric loss (room temperature, 102~106Hz) | 0.011~0.06 | 0.011~0.013 |
Embodiment 4
By 2g polyphenylene oxide, (polyphenylene oxide (PPO* 630) that number-average molecular weight is 17300 is dissolved completely in 40ml toluene, is gathered
Then the mesoporous silicon oxide (UC-S-6) of 2g is added in phenylate solution, it is 0.2% that mass concentration is added to after being dispersed with stirring
In the aqueous solution of 600ml lauryl sodium sulfate surfactant, oil-in-water system is formed.Since polyphenylene oxide is not soluble in water, with
The gradually volatilization of toluene solvant, the polyphenylene oxide of precipitation can deposit or be adsorbed on the surface of mesoporous silicon oxide, filling or sealing
It is mesoporous.Precipitate is washed after stirring 5 hours, filters, and 120 DEG C of vacuum drying can be obtained polyphenylene oxide filling cladding for 5 hours and be situated between
Hole earth silicon material, wherein polyphenylene oxide and mesoporous silicon oxide material quality score ratio are 1:1.
50g dimaleoyl imino diphenyl-methane is heated with stirring at 130 DEG C with 25g allyl phenol epoxy resin transparent
Then the coating mesoporous silicon dioxide granule of 3g polyphenylene oxide is added in solution, about in 140 DEG C of pre-polymerization 50min under stirring condition, then
Prepolymer solution is poured into flat plate mold, about 30min is vacuumized at 140 DEG C, then again according to 150 DEG C of temperature program(me)/
2h+180 DEG C/2h+200 DEG C/2h+230 DEG C/2h is solidified, and takes out curing materials from flat plate mold after natural cooling.
Comparative example 4
50g dimaleoyl imino diphenyl-methane is heated with stirring at 130 DEG C with 25g allyl phenol epoxy resin transparent molten
Liquid then pours into prepolymer solution in flat plate mold about in 140 DEG C of pre-polymerization 50min under stirring condition, takes out at 140 DEG C true
Sky about 30min, is then solidified according to 150 DEG C/2h+180 DEG C/2h+200 DEG C/2h+230 DEG C/2h of temperature program(me) again, from
So curing materials are taken out from flat plate mold after cooling.
The performance parameter of 4 material of table
Performance | Comparative example 4 | Embodiment 4 |
Impact strength (KJ/m2) | 11.3 | 14.7 |
Fracture toughness (KIC)/MPa·m1/2 | 1.15 | 1.76 |
Bending strength/MPa | 123 | 171 |
5wt% weightlessness thermal decomposition temperature/DEG C (TGA method) | 452 | 460 |
Dielectric constant (room temperature, 102~106Hz) | 4.3~4.7 | 2.6~3.0 |
Dielectric loss (room temperature, 102~106Hz) | 0.018~0.09 | 0.012~0.013 |
Table 4 is the performance parameter of 4 material of embodiment 4 and comparative example, from table 4, it can be seen that polyphenylene oxide coating mesoporous two is added
After silicon oxide particle, the mechanical property of material is superior to pure resin system.In particular, the meso-porous titanium dioxide of polyphenylene oxide cladding is added
The dielectric properties of the material of silicon are substantially reduced, this is mainly the mesoporous silicon oxide of polyphenylene oxide cladding with excellent mechanical property
Caused by energy, hot property and low-dielectric energy.
Claims (7)
1. a kind of low dielectric bismaleimide resin system, which is characterized in that the low dielectric bismaleimide resin
Then the preparation method of system is added the following steps are included: bismaleimide and allyl compound are heated to clear solution
The coating mesoporous silicon dioxide granule of polyphenylene oxide, stirs to get performed polymer;Then performed polymer is poured into mold, in 130~150 DEG C
Vacuumize 30~40min;Then solidified at 150~230 DEG C of temperature, obtain low dielectric bismaleimide resin
System;The mass ratio of the coating mesoporous silicon dioxide granule of the bismaleimide, allyl compound, polyphenylene oxide is 100: (50
~100): (2~8).
2. low dielectric bismaleimide resin system according to claim 1, it is characterised in that: the bismaleimide
For two methyl phenyl ethers anisole of dimaleoyl imino diphenyl-methane and/or dimaleoyl imino;The allyl compound is two allyls
Base bisphenol-A, diallyl bisphenol S, aryl allyl alkyl phenol, polyallyl ether ketone, allyl phenol epoxy resin or N- allyl
Base arylamine.
3. low dielectric bismaleimide resin system according to claim 1, it is characterised in that: stirred in 130~150 DEG C
30~50min obtains performed polymer.
4. low dielectric bismaleimide resin system according to claim 1, which is characterized in that polyphenylene oxide coating mesoporous two
Silicon oxide particle the preparation method comprises the following steps: polyphenylene oxide is dissolved in benzene kind solvent, mesoporous silicon oxide is added, is added and contains after stirring
In the aqueous solution of surfactant, stirring obtained the coating mesoporous silicon dioxide granule of polyphenylene oxide after 4~6 hours;The polyphenylene oxide
Mass ratio with mesoporous silicon oxide is (1~3.3): 1.
5. low dielectric bismaleimide resin system according to claim 4, it is characterised in that: point of the polyphenylene oxide
Son amount is 1100~20000;The mesoporous aperture of the mesopore silicon oxide is 2nm~9nm, and partial size is 20~100nm;The surface
Activating agent includes neopelex, lauryl sodium sulfate, Monododecylphosphate potassium.
6. low dielectric bismaleimide resin system according to claim 4, it is characterised in that: polyphenylene oxide and benzene kind solvent
Mass ratio be 1: (10~18);The mass concentration of surfactant is 0.1~0.3% in aqueous solution containing surfactant;
After stirring 4~6 hours, by water washing, suction filtration, 100~120 DEG C of vacuum drying polyphenylene oxide is can be obtained in 4~6 hours in mixed liquor
Coating mesoporous silicon dioxide granule.
7. low dielectric bismaleimide resin system according to claim 1, it is characterised in that: cured technique is 150
DEG C/2h+180 DEG C/2h+200 DEG C/2h+220~230 DEG C/2h.
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