CN107245124B - Pressure-sensitive polymer syntactic foam with through-cell structure and preparation method thereof - Google Patents
Pressure-sensitive polymer syntactic foam with through-cell structure and preparation method thereof Download PDFInfo
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- CN107245124B CN107245124B CN201710398080.4A CN201710398080A CN107245124B CN 107245124 B CN107245124 B CN 107245124B CN 201710398080 A CN201710398080 A CN 201710398080A CN 107245124 B CN107245124 B CN 107245124B
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1808—C8-(meth)acrylate, e.g. isooctyl (meth)acrylate or 2-ethylhexyl (meth)acrylate
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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Abstract
The invention discloses a kind of pressure-sensitive polymer composite foam and preparation method thereof with through hole structure, this method comprises: preparing oily phase；Water soluble salt, graphene oxide aqueous dispersions and ascorbic acid are added to the water, the lamella size of graphene oxide is 10nm~500nm, obtains water phase；Under agitation, oily phase is added in water phase, obtains stable lotion, be placed on reaction in closed reactor, dry after the reaction was completed to constant weight, obtain pressure-sensitive polymer composite foam.The present invention uses lotion for template, implements the in-situ polymerization technology in the presence of conductive filler granule, and preparation has pressure-sensitive character polymer composite foam.The piezoresistance sensitivity structure of foam of polymers is formed simultaneously and organically combines with ventilating structure, and institute's prepared material is not only light, but also ventilative, with more stable signal-obtaining performance and high signal read accuracy.
Description
Technical field
The present invention relates to resistance-type voltage sensitive sensor technical fields, and in particular to a kind of with the pressure-sensitive of through hole structure
Polymer composite foam and preparation method thereof.
Background technique
Resistance-type pressure-sensitive polymer foam can express apparent piezoresistive effect: when material stress deformation, inner conductive network
It resets, resistance value generates regularity response with deformation quantity.And material is light, flexible height, it is good to be made device stickiness, with it
" the wearable device " of building can read the human bodies dynamic body reference such as limb motion, breathing, heartbeat breath in real time, in robot, be good for
There is important application prospect in the fields such as health monitoring and biomethanics.
The preparation method of existing pressure-sensitive polymer foam mainly includes " foaming " and " solid template method ".Yao H B
With polyurethane (PU) foam, for " solid template ", " reduction is made in (Advanced materials, 2013,25,6692-6698.)
Graphene oxide (rGO)/PU " pressure-sensitive polymer foam.The average pore size of material is 200 microns, with rGO package PU skeleton
Composite construction.Because modulus is low, when lesser stress, biggish deformation occurs for PU skeleton, and the conductive filler in composite construction is mutual
Connection, forms new conductive path, and the resistance value of material significantly changes, therefore the response spirit of this kind of pressure-sensitive polymer foam stress
Sensitivity is high.In general, this class A foam A also has the design feature of high porosity and large aperture, average pore size is much in 100 microns,
Therefore skeleton specific surface area is low, and in the filler conductive network formed based on skeleton surface, conductive contact number is difficult in material deformation
Big change occurs, cause material strain sensitivity very low, is unable to satisfy the performance requirement of high sensor part.Replacement
Conductive filler changes the sensitivity that pressure-sensitive polymer foam can be improved with carbon black and Nano silver grain etc., but preparation process is multiple
It is miscellaneous, such as Wu X (Adv.Funct.Mater.2016,26,6246-6256) preparing Carbon Black/polyurethane composite foam material
In the process, carbon black pellet needs 15 repeated depositions on polyurethane foam skeleton, just can get excellent sensitivity.
In conclusion preparation high sensitivity, performance are stable, cellular structure is controllable and operate convenient pressure-sensitive polymer foam
Technology is still immature.
Summary of the invention
The present invention provides a kind of the pressure-sensitive polymer composite foam and preparation method thereof with through hole structure, use
Lotion is the in-situ polymerization technology in the presence of template and conductive filler granule, and preparation has pressure-sensitive character polymer composite foam.
The characteristics of this method, is that the average pore size of prepared foam of polymers is micron order.Compared to reported pressure
Quick type polymer composite foam, which has the following prominent advantages: as average pore size is down to micron order, compound
Foam inner frame specific surface area increases, and the specific surface area for being attached to skeleton surface conductive filler network also increases therewith, therefore leads
The number of electrical nodes can produce bigger change in material deformation.Secondly, foam of polymers bore is mutually communicated (duct
Through) when, internal through hole can also assign the excellent gas permeability of material (Soft matter, 2009,5 (23): 4780-
4787.)。
In conclusion the piezoresistance sensitivity structure of foam of polymers is formed simultaneously and organically combines with ventilating structure, institute's saw lumber
Material is not only light, but also ventilative, with more stable signal-obtaining performance and high signal read accuracy.
A kind of preparation method of the pressure-sensitive polymer composite foam with through hole structure, comprising the following steps:
1) preparation of oily phase: hard monomer, cross-linking monomer and soft monomer being uniformly mixed, mix monomer is obtained, to mixed
It closes and initiator and emulsifier is added in monomer, obtain oily phase；
2) preparation of water phase: water soluble salt, graphene oxide aqueous dispersions and ascorbic acid are added to the water, water is obtained
Phase；
The lamella size of graphene oxide is 10nm~500nm；
3) preparation of pressure-sensitive foam: under agitation, being added oily phase for water phase, obtain stable lotion, postposition
It is reacted in closed reactor, it is after the reaction was completed, product is dry to constant weight, obtain that there is the pressure-sensitive poly- of through hole structure
Close object composite foam.
In the present invention, pass through the concentration and specific step for controlling the lamella size of graphene oxide, controlling water soluble salt
Rapid limit obtains the small-bore pressure-sensitive polymer composite foam with through hole structure.
In step 1), the hard monomer is the mixing of one or both of styrene, methyl methacrylate monomer
Object；
The cross-linking monomer is one of divinylbenzene, ethylene glycol dimethacrylate；
The soft monomer is in isooctyl methacrylate, propyl acrylate, ethyl acrylate and butyl acrylate
At least one (i.e. one or more of mixture)；
The initiator is one of azodiisobutyronitrile, dibenzoyl peroxide, azo dicyano valeric acid；
The emulsifier be at least one of sorbester p17, Hypermer A70 or glycerin monostearate (it is i.e. a kind of or
Several mixture)；
The hard monomer, cross-linking monomer, soft monomer mass ratio be 100:30~250:500~2300；Into one
Step preferably, the hard monomer, cross-linking monomer, soft monomer mass ratio be 100:44~226:770~1980；
The mass ratio of the sum of the hard monomer, cross-linking monomer, soft monomer three and initiator is 100:0.3~1；
Further preferably, the mass ratio of the sum of the hard monomer, cross-linking monomer, soft monomer three and initiator is 100:0.35
~0.9；
The mass ratio of the sum of the hard monomer, cross-linking monomer, soft monomer three and emulsifier is 100:8~50；
Further preferably, the mass ratio of the sum of the hard monomer, cross-linking monomer, soft monomer three and emulsifier be 100:10~
32。
In step 2), the water soluble salt is calcium chloride, sodium chloride, sodium sulphate, sodium nitrate, potassium chloride, potassium nitrate, sulphur
At least one of sour potassium, aluminium chloride, aluminum sulfate, aluminum nitrate (i.e. one or more of mixture)；
The mass ratio of graphene oxide and ascorbic acid, water soluble salt, water in the graphene oxide aqueous dispersions
For 1:1.5~20:0.5~2:200~3000, further preferably, the graphite oxide in the graphene oxide aqueous dispersions
The mass ratio of alkene and ascorbic acid, water soluble salt, water is 1:2~15:0.8~2:300~2750.
The concentration of the graphene oxide aqueous dispersions is 0.5~10mg/g, i.e., every gram of graphene oxide water dispersion
Liquid contains 0.5~10mg graphene oxide.Further preferably, the concentration of the graphene oxide aqueous dispersions is 1~5mg/
g。
In step 3), the temperature of the reaction is 50~95 DEG C；The time of the reaction is 2~48 hours.
It is dry that 40 DEG C~65 DEG C high temperature drying can be used, freeze-drying can also be used.
With 100 parts of gross mass part calculating of water phase and oily phase, the mass parts of the water phase are 75~90 parts, the oil
The mass parts of phase are 10~25 parts.I.e. to prepare mass number as 100 parts of emulsion particles, reagent dosage is described, wherein the matter of water phase
Measure score is not less than lotion gross mass 75%.
Water phase is slowly added to oily phase, the rate of addition of water phase is 0.5mL/min~8mL/min.Further preferably, by water
It is mutually slowly added to oily phase, the rate of addition of water phase is 1mL/min~5mL/min.
The pressure-sensitive polymer composite foam average pore size with through hole structure of the preparation method preparation is micro-
Meter level, average pore size are specially 10 microns~100 microns, further preferably 15 microns~50 microns.
Compared with prior art, the invention has the following advantages:
The present invention prepares pressure-sensitive polymer composite foam with emulsion template polymerization, and this method can prepare the pressure of micron pore size
Photosensitive polymerization object composite foam, compares existing same type of material, and average pore size reduces nearly 1 magnitude.Material can be increased substantially as a result,
Skeleton specific surface area, and when Effective Regulation material macroscopic deformation internal pore structure microdeformation, realize conductive when material strain
The high increment of number of contacts obtains the pressure-sensitive polymer material that high response sensitivity is all had to stress and strain.In addition, for gathering
Close that adoptable monomer is in extensive range, the mechanical property of conveniently adjusted foam, therefore the also conveniently adjusted gained of this method is multiple
Close the stress response section of foam.
Detailed description of the invention
Fig. 1 is the pressure-sensitive polymer composite foam scanning electron microscope (SEM) photograph prepared in embodiment 1；
Fig. 2 is the pressure-sensitive polymer composite foam scanning electron microscope (SEM) photograph prepared in embodiment 2；
Fig. 3 is the pressure-sensitive polymer composite foam scanning electron microscope (SEM) photograph prepared in embodiment 3；
Fig. 4 is the pressure-sensitive polymer composite foam scanning electron microscope (SEM) photograph prepared in embodiment 4；
Fig. 5 is the schematic diagram for measuring pressure-sensitive polymer composite foam in 1V voltage, current value；
Fig. 6 is pressure-sensitive polymer composite foam current curve under different circulating pressures in embodiment 1；
Fig. 7 is pressure-sensitive polymer composite foam current changing rate curve under 50 circulating pressures in embodiment 1；
Fig. 8 is current changing rate curve when pressure-sensitive polymer composite foam is by different frequency circulating pressure in embodiment 1；
Fig. 9 is the detection response time of pressure-sensitive polymeric foam in embodiment 1；
Current curve figure when Figure 10 is pressure-sensitive polymeric foam detection human pulse in embodiment 1；
Figure 11 is the current curve figure that pressure-sensitive polymeric foam detects when human body is swallowed in embodiment 2；
Figure 12 is the current curve figure that pressure-sensitive polymeric foam detects when human body is coughed in embodiment 3；
Curent change distribution map when Figure 13 is pressure-sensitive polymeric foam resolution body form in embodiment 4.
Specific embodiment
Voltage-dependent characteristic evaluation carries out by the following method in the specific embodiment of the invention: as shown in Figure 5, wherein 1 is to answer
Power, 2 be aluminium flake, and 3 be pressure-sensitive polymer foam, and 4 be elargol layer, and 5 be aluminium flake, and 6 be universal material test machine, and 7 be LCR number electricity
Sample is placed in testing mould by bridge table in constant temperature, constant humidity environment, applies stress in compression sigma, material strain ε is read, in LCR
The changing value I/I of the current value of material under 1V voltage is read in digital electric bridge table0.According to test data, material is calculated
Stress sensitivity and the strain sensitivity factor.Calculation formula is as follows:
Below with reference to specific implementation example, the present invention will be further described.
Embodiment 1:
1. the preparation of oily phase:
(1) by 0.7 gram of methyl methacrylate, 0.55 gram of butyl acrylate, 0.45 gram of propyl acrylate, 5.67 grams of methyl
Isooctyl acrylate monomer is uniformly mixed with 0.81 gram of divinylbenzene, obtains mix monomer.
(2) 2.6 grams of sorbester p17s and 0.03 gram of azodiisobutyronitrile are added in the mix monomer obtained to (1), and mixes equal
It is even, obtain oily phase.
2. the preparation of water phase
By 20 grams of graphene oxide aqueous dispersions, (concentration of graphene oxide aqueous dispersions is 5mg/g, graphene oxide sheet
Layer is having a size of 200nm), 0.2 gram of ascorbic acid and 0.171 gram of sodium chloride are added in the deionized water of 30mL and obtain water phase.Phase
Between, the method assisted oxidation graphene uniform dispersion of ultrasound can be used.
3. the preparation of pressure-sensitive foam
Firstly, oil is mutually poured into three mouthfuls of glass reaction kettles, water is slowly added dropwise into oily phase under the stirring of 600rpm revolving speed
Phase；After (speed 1mL/min) is added dropwise in water phase, revolving speed is adjusted to 800rpm, continues stirring 1 hour, obtains phase in height
Lotion；High Internal Phase Emulsion is transferred in mold bottle, and is sealed.It polymerize 24 hours at 65 DEG C, is removed after polymerization reaction
Mold obtains sample.Drying to constant weight at last 40 DEG C, and pressure-sensitive polymer composite foam is made.
Fig. 1 is the pressure-sensitive polymer composite foam scanning electron microscope (SEM) photograph prepared in embodiment 1, prepared foam of polymers
Average pore size is 18.95 microns, and has through hole structure.
Embodiment 2:
1. the preparation of oily phase:
(1) by 0.68 gram of styrene, 0.72 gram of butyl acrylate, 5.88 grams of isooctyl methacrylate and 0.41 gram of diformazan
Base acrylic acid glycol ester is uniformly mixed, and obtains mix monomer.
(2) 0.87 gram of Hypermer A70 and 0.06 gram of azodiisobutyronitrile are added in the mix monomer obtained to (1), and
It is uniformly mixed, obtains oily phase.
2. the preparation of water phase
By graphene oxide aqueous dispersions 20 grams of (the concentration 5mg/g of graphene oxide aqueous dispersions, graphene oxide layers
Having a size of 500nm), 0.25 gram of ascorbic acid and 0.09 gram of anhydrous calcium chloride are added in the deionized water of 50mL and prepare water phase.
The method assisted oxidation graphene uniform dispersion of ultrasound can be used in period.
3. the preparation of pressure-sensitive foam
Firstly, oil is mutually poured into three mouthfuls of glass reaction kettles.Water is slowly added dropwise into oily phase under the stirring of 500rpm revolving speed
Phase；After (speed 5mL/min) is added dropwise in water phase, revolving speed is adjusted to 900rpm, continues stirring 1.5 hours, obtains in height
Phase emulsion；High Internal Phase Emulsion is transferred in mold bottle, and is sealed.It polymerize 4 hours at 85 DEG C, is removed after polymerization reaction
Mold obtains sample.Finally, pressure-sensitive polymer composite foam is made to constant weight in freeze-drying.
Fig. 2 is the pressure-sensitive polymer composite foam scanning electron microscope (SEM) photograph prepared in embodiment 2, prepared foam of polymers
Average pore size is 20.14 μm, and has through hole structure.Compared with Example 1, pressure-sensitive polymer composite foam average pore size
It is basically unchanged.
Embodiment 3:
1. the preparation of oily phase:
(1) by 0.4 gram of styrene, 0.68 gram of butyl acrylate, 7.23 grams of isooctyl methacrylate, 0.9 gram of divinyl
Base benzene is uniformly mixed, and obtains mix monomer.
(2) 1.8 grams of Hypermer A70,0.08 gram of benzoyl peroxide mixing are added in the mix monomer obtained to (1)
Uniformly, oily phase is obtained.
2. the preparation of water phase
By 20 grams of graphene oxide aqueous dispersions, (concentration of graphene oxide aqueous dispersions is 1mg/g, graphene oxide sheet
Layer is having a size of 100nm), 0.3 gram of ascorbic acid and 0.02 gram of potassium nitrate, 0.02 gram of sodium nitrate are added in the deionized water of 55mL
Prepare water phase.The method assisted oxidation graphene uniform dispersion of ultrasound can be used in period.
3. the preparation of pressure-sensitive foam
Firstly, oil is mutually poured into three mouthfuls of glass reaction kettles.Water is slowly added dropwise into oily phase under the stirring of 450rpm revolving speed
Phase；After (speed 1mL/min) is added dropwise in water phase, revolving speed is adjusted to 800rpm, continues stirring 1.2 hours, obtains in height
Phase emulsion；High Internal Phase Emulsion is transferred in mold bottle, taps test tube wall repeatedly, uniform and bubble-free is filled with guarantee system,
It is sealed again.It polymerize 5 hours at 90 DEG C, mold is removed after polymerization reaction and obtains sample.It is dried at last 65 DEG C
Pressure-sensitive polymer composite foam is made in constant weight.
Fig. 3 is the pressure-sensitive polymer composite foam scanning electron microscope (SEM) photograph prepared in embodiment 3, prepared foam of polymers
Average pore size is 27.54 μm, and has through hole structure.Compared with Example 1, average hole in pressure-sensitive polymer composite foam
Diameter is increased slightly.
Embodiment 4:
1. the preparation of oily phase:
(1) by 0.95 gram of styrene, 0.48 gram of butyl acrylate, 6.85 grams of isooctyl methacrylate, 0.423 gram of diformazan
Base acrylic acid glycol ester is uniformly mixed, and obtains mix monomer.
(2) it is uniformly mixed that 2.65 grams of sorbester p17s, 0.032 gram of azodiisobutyronitrile are added in the mix monomer obtained to (1),
Obtain oily phase.
2. the preparation of water phase
By 30 grams of graphene oxide aqueous dispersions, (concentration of graphene oxide aqueous dispersions is 2mg/g, graphene oxide sheet
Layer is having a size of 20nm), 0.3 gram of ascorbic acid and 0.12 gram of anhydrous calcium chloride are added in the deionized water of 40mL and prepare water phase.
The method assisted oxidation graphene uniform dispersion of ultrasound can be used in period.
3. the preparation of pressure-sensitive foam
Firstly, oil is mutually poured into three mouthfuls of glass reaction kettles.Water is slowly added dropwise into oily phase under the stirring of 600rpm revolving speed
Phase；After (speed 1mL/min) is added dropwise in water phase, revolving speed is adjusted to 800rpm, continues stirring 1 hour, obtains phase in height
Lotion；High Internal Phase Emulsion is transferred in mold bottle, taps test tube wall repeatedly, uniform and bubble-free is filled with guarantee system, then
It is sealed.It polymerize 18 hours at 65 DEG C, mold is removed after polymerization reaction and obtains sample.Perseverance is dried at last 40 DEG C
Pressure-sensitive polymer composite foam is made in weight.
Fig. 4 is the pressure-sensitive polymer composite foam scanning electron microscope (SEM) photograph for preparing in embodiment 4, in prepared foam of polymers
Average pore size be 37.58 μm.Compared with Example 1, the average pore size of pressure-sensitive polymer composite foam increases, and through hole
Structure is less.
Detect the performance of pressure-sensitive polymeric foam made from embodiment 1.It will be appreciated from fig. 6 that pressure-sensitive polymeric foam is in larger stress
There is excellent responsiveness in section, and has excellent sensitivity in lower strain area；According to Fig. 7, the result of Fig. 8 is it is found that pressure-sensitive poly-
Closing object composite foam can ensure that stable pressure-sensitive character during multiple compression circulation and in different frequency compression circulation；By
Fig. 9 result is it is found that the pressure-sensitive polymer composite foam response time is < 30.8ms.
Pressure-sensitive polymeric foam system made from the embodiment 1 as known to Figure 10 result can detecte the pulse of different conditions servant；
By Figure 11 result it is found that pressure-sensitive polymeric foam system can capture the movement of neck when swallowing；By Figure 12 result it is found that embodiment 2
The movement of neck when pressure-sensitive polymeric foam system obtained captures cough；As Figure 13 result it is found that pressure-sensitive polymerization made from embodiment 3
Object composite foam can differentiate the shape of object.To sum up, a kind of pressure-sensitive polymer with hierarchical porous structure prepared by the present invention
Composite foam can read the human bodies dynamic body reference such as limb motion, breathing, heartbeat with " the wearable device " that it is constructed in real time
Breath, there is important application prospect in fields such as robot, health monitoring and biomethanics.
Claims (9)
1. a kind of preparation method of the pressure-sensitive polymer composite foam with through hole structure, which is characterized in that including following
Step:
1) preparation of oily phase: hard monomer, cross-linking monomer and soft monomer being uniformly mixed, mix monomer is obtained, single to mixing
Initiator and emulsifier are added in body, obtains oily phase；
The hard monomer is the mixture of one or both of styrene, methyl methacrylate monomer；
The soft monomer be isooctyl methacrylate, propyl acrylate, ethyl acrylate and butyl acrylate at least
It is a kind of；
The emulsifier is at least one of sorbester p17, Hypermer A70 or glycerin monostearate；
2) preparation of water phase: water soluble salt, graphene oxide aqueous dispersions and ascorbic acid are added to the water, water phase is obtained；
The lamella size of graphene oxide is 10nm~500nm；
The water soluble salt be calcium chloride, sodium chloride, sodium sulphate, sodium nitrate, potassium chloride, potassium nitrate, potassium sulfate, aluminium chloride,
At least one of aluminum sulfate, aluminum nitrate；
3) preparation of pressure-sensitive foam: under agitation, being added oily phase for water phase, obtain stable lotion, be placed on it is close
Reaction in the reactor closed, dries to constant weight after the reaction was completed, obtains the pressure-sensitive polymer compound vacuole with through hole structure
Foam.
2. the preparation method of the pressure-sensitive polymer composite foam according to claim 1 with through hole structure, special
Sign is, in step 1), the cross-linking monomer is one of divinylbenzene, ethylene glycol dimethacrylate；
The initiator is one of azodiisobutyronitrile, dibenzoyl peroxide, azo dicyano valeric acid.
3. the preparation method of the pressure-sensitive polymer composite foam according to claim 1 with through hole structure, special
Sign is, in step 1), the hard monomer, cross-linking monomer, soft monomer mass ratio be 100:30~250:500~
2300。
4. the preparation method of the pressure-sensitive polymer composite foam according to claim 1 with through hole structure, special
Sign is, in step 1), the sum of the hard monomer, cross-linking monomer, soft monomer three and the mass ratio of initiator are
100:0.3~1.
5. the preparation method of the pressure-sensitive polymer composite foam according to claim 1 with through hole structure, special
Sign is, in step 1), the sum of the hard monomer, cross-linking monomer, soft monomer three and the mass ratio of emulsifier are
100:8~50.
6. the preparation method of the pressure-sensitive polymer composite foam according to claim 1 with through hole structure, special
Sign is, the graphene oxide and ascorbic acid, water soluble salt, water in step 2), in the graphene oxide aqueous dispersions
Mass ratio be 1:1.5~20:0.5~2:200~3000；
The concentration of the graphene oxide aqueous dispersions is 0.5~10mg/g.
7. the preparation method of the pressure-sensitive polymer composite foam according to claim 1 with through hole structure, special
Sign is, in step 3), the temperature of the reaction is 50~95 DEG C；The time of the reaction is 2~48 hours.
8. the preparation method of the pressure-sensitive polymer composite foam according to claim 1 with through hole structure, special
Sign is, in step 3), water phase is slowly added to oily phase, the rate of addition of water phase is 0.5mL/min~8mL/min.
9. the pressure-sensitive polymer composite foam with through hole structure of preparation method preparation according to claim 1.
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| CN103408786A (en) * | 2013-07-26 | 2013-11-27 | 复旦大学 | Preparation method of porous graphene-polymer composite material |
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