CN107286538A - A kind of highly sensitive high temperature resistant thermistor composite material and preparation method thereof - Google Patents
A kind of highly sensitive high temperature resistant thermistor composite material and preparation method thereof Download PDFInfo
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- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
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- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- C08J2433/00—Characterised by the use of homopolymers or 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 of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
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- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention discloses a kind of highly sensitive high temperature resistant thermistor composite material, include the raw material of following parts by weight：57 parts of graphene, 45 55 parts of polymeric material, 37 parts of lucium, conduction help 15 25 parts of material, 35 parts of coupling agent, 68 parts of metal oxide filler, 20 30 parts of acrylic resin, 35 parts of crosslinking coagent, 24 parts of auxiliary agent of increasing property.The thermistor composite material of the present invention starting resistance is low, fast response time, temperature and resistance correlation are superior, and it can keep good stability and reliability under the adverse circumstances such as high temperature, and service life is greatly improved；While the preparation method of the present invention, raw material is easy to get, cost is low, technique is concise, with higher practical value and good application prospect.
Description
Technical field
The present invention relates to resistance material technical field, and in particular to a kind of highly sensitive high temperature resistant thermistor composite material and
Its preparation method.
Background technology
With positive temperature coefficient（PTC）Polymer composites be widely used in computer and its external equipment, movement
In phone, battery pack, telecommunication and network equipment, transformer, industrial control equipment, automobile and other electronic products, play
The effect of overcurrent or overheat protector.PTC polymer composites are a kind of temperature-sensitives that resistance value rises with the rise of temperature
It is held essentially constant when the resistance or resistivity of material, i.e. material are within the scope of certain certain temperature or the only change of small quantity
Change, and when temperature is reached near some specific knee pointy temperature of material, the resistivity of material can be in several years or ten several years
Undergone mutation within the scope of narrow temperature, resistivity increases rapidly 103~109The order of magnitude.By means of this resistivity with temperature
Variation relation, the Positive temperature coefficient composite material can realize overcurrent or the purpose of overheat protector.For thermistor composite wood
Material, has alap room temperature resistivity, PTC intensity as high as possible and enough stability it is generally desirable to it.
At present, research both at home and abroad has positive temperature coefficient (PTC) characteristic conductance composite with widely used
It is carbon black filled composite and composite that metallic particles is conductive filler.Carbon black filled PTC polymer composites
Material has in interior adjustable electric conductivity in a big way, it is easy to be molded, the low feature of cost；But the problem of existing is room temperature resistance
Rate is higher, and PTC effect stability is poor, causes PTC intensity and power output to decay too fast, and leakage current is big etc. after protection.And metal
Particle is the PTC polymer composites of conductive filler, because metallic particles is rigid all the time in PTC heating phase transition process
Grain, does not undergo phase transition, so as to cause to continue more serious negative temperature electricresistance effect (NTC) occur in temperature-rise period；NTC phenomenons
Appearance the electrical property of ptc material is occurred irreversible change, and understand during the use of material because of material temperature
Spend high and fail, or even catching fire.Therefore, conductive network how is effectively constructed, relatively low room temperature resistivity is kept, and
Also possesses superperformance in terms of stability and PTC intensity, the practical application to thermistor material is significant.
The content of the invention
For the defect of prior art, it is an object of the invention to provide a kind of highly sensitive high temperature resistant thermistor composite wood
Material, the starting resistance of the thermistor composite material is low, fast response time, and temperature and resistance correlation are superior, and it can be in height
Good stability and reliability are kept under the adverse circumstances such as temperature, service life is greatly improved；While the preparation method of the present invention,
Raw material is easy to get, and cost is low, technique is concise, with higher practical value and good application prospect.
The present invention solves technical problem and adopted the following technical scheme that：
The invention provides a kind of highly sensitive high temperature resistant thermistor composite material, include the raw material of following parts by weight：
5-7 parts of graphene, 45-55 parts of polymeric material, 3-7 parts of lucium, conduction help material 15-25 parts, coupling agent 3-5
Part, 6-8 parts of metal oxide filler, 20-30 parts of acrylic resin, 3-5 parts of crosslinking coagent, 2-4 parts of auxiliary agent of increasing property.
Preferably, the highly sensitive high temperature resistant thermistor composite material includes the raw material of following parts by weight：
6 parts of graphene, 50 parts of polymeric material, 5 parts of lucium, conduction help 20 parts of material, 4 parts of coupling agent, metal oxide
7 parts of filler, 25 parts of acrylic resin, 4 parts of crosslinking coagent, 3 parts of auxiliary agent of increasing property.
Preferably, the graphene is bilayer graphene；
The polymeric material is the Kynoar of Kynoar and modified by maleic acid anhydride graft according to weight ratio 6:1 composition
Mixture, the grafting rate of the Kynoar of the modified by maleic acid anhydride graft is 1.3%.
Preferably, the lucium be comprising lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium hopcalite.
Preferably, the conduction helps material to include the raw material of following parts by weight：5-7 parts of carbon fiber, 3-5 parts of carbon black, conductive pottery
1-3 parts of porcelain powder, 2-4 parts of multi-walled carbon nanotube.
Preferably, the coupling agent is one kind or several in silane coupler, titanate coupling agent, aluminate coupling agent
Kind.
Preferably, the metal oxide filler is that zinc oxide, titanium sesquioxide, aluminum oxide compare 3 according to weight:1:2 groups
Into mixture.
Preferably, the crosslinking coagent is trimethylolpropane trimethacrylate；
The increasing property auxiliary agent is antioxidant and lubricant according to weight ratio 1:2 composition mixtures, the antioxidant be phenols or
Amine antioxidants, the lubricant is zinc stearate and calcium stearate according to weight ratio 2:The mixture of 3 compositions.
The present invention also provides a kind of preparation method of highly sensitive high temperature resistant thermistor composite material, comprises the following steps：
Step one, weigh on request and prepare each component raw material；
Step 2, helps material, metal oxide filler to add in high speed mixer coupling agent, lucium, conduction, in stirring
Rotating speed is under 300-400 r/min, stirring 20-30 minutes obtains mixture A；
Step 3, polymeric material, acrylic resin are added in banbury, temperature be 165-175 DEG C, rotating speed be 100-
Under 160r/min, stirring mixing 8-12 minutes；Crosslinking coagent, increasing property auxiliary agent are added, continues to mix 7-9 minutes, adds step
It is rapid two prepare mixture A, graphene, by temperature be increased to 175-185 DEG C, rotating speed be increased to 400-500r/min, continue to stir
Mix 30-40 minutes, obtain mixture B；
Step 4, mixture B things are added in mould, are placed in flat press, are preheated in the case where temperature is 165-175 DEG C
10-12min, then the hot pressing 8-12min in the case where pressure is 12-14MPa, is cooled to after room temperature and takes out, the compound of 1-3mm thickness is made
Material, then the composite of preparation is put into vacuum constant-temperature container be heat-treated, the constant temperature 10-16h at 135-145 DEG C of temperature,
It is subsequently cooled to the highly sensitive high temperature resistant thermistor composite material that room temperature obtains the present invention.
Preferably, the preparation process of the highly sensitive high temperature resistant thermistor composite material is：
Step one, weigh on request and prepare each component raw material；
Step 2, helps material, metal oxide filler to add in high speed mixer coupling agent, lucium, conduction, in stirring
Rotating speed is under 350r/min, stirring 25 minutes obtains mixture A；
Step 3, polymeric material, acrylic resin are added in banbury, temperature be 170 DEG C, rotating speed be 130r/min
Under, stirring mixing 10 minutes；Crosslinking coagent, increasing property auxiliary agent are added, continues to mix 8 minutes, the mixed of step 2 preparation is added
Compound A, graphene, by temperature be increased to 180 DEG C, rotating speed be increased to 450r/min, continue to stir 35 minutes, obtain mixture B；
Step 4, mixture B things are added in mould, are placed in flat press, are preheated in the case where temperature is 170 DEG C
11min, then the hot pressing 10min in the case where pressure is 13MPa, is cooled to after room temperature and takes out, and the thick composites of 2mm are made, then will
The composite of preparation is put into vacuum constant-temperature container and is heat-treated, the constant temperature 13h at 140 DEG C of temperature, is subsequently cooled to room temperature and obtains
To the highly sensitive high temperature resistant thermistor composite material of the present invention.
Compared with prior art, the present invention has following beneficial effect：
（1）The present invention a kind of highly sensitive high temperature resistant thermistor composite material using conduction help material and metal oxide filler as
Main conductive matrix, wherein conduction help material to be mainly carbon fiber, carbon black, conductivity ceramics powder, multi-walled carbon nanotube, metal oxidation
Thing filler is mainly zinc oxide, titanium sesquioxide, aluminum oxide, and conductivity ceramics powder coordinates zinc oxide, titanium sesquioxide, oxidation
Aluminium, with resistance to stream, effect that is pressure-resistant and improving resistance variations stability is strengthened, carbon fiber and multi-walled carbon nanotube are led with improvement
The effect of electric network and electric conductivity, while enabling to the reunion mobility of material to reduce, so as to greatly improve the steady of material
Qualitative and reliability.
（2）The graphene of a kind of highly sensitive high temperature resistant thermistor composite material addition of the present invention, with larger footpath
Thickness rate, and graphene has a very big specific surface area, these premium properties increase graphene in matrices of composite material that
The probability of this connection and the probability for forming effective turning circuit.The lamellar structure of particularly graphene causes it to be difficult to twine mutually
Knot, when temperature reaches PTC transition temperatures, conductive network is more easy to disconnect, therefore greatly improves the temperature of thermistor composite material
Spend sensitivity.
（3）A kind of highly sensitive high temperature resistant thermistor composite material of the present invention is made with polymeric material and acrylic resin
For backing material, by cross-linking reaction, the high-temperature stability and processing characteristics of product are improved, secondly the resistance to of product is improved again
Grade is pressed, making the reliability of product strengthens.
（4）A kind of lucium of highly sensitive high temperature resistant thermistor composite material addition of the present invention can be carried effectively
The resistance to elevated temperatures of high composite, greatly enhances the reliability under its high temperature.
（5）A kind of highly sensitive high temperature resistant thermistor composite material of the present invention starting resistance is low, fast response time, temperature
Degree is superior with resistance correlation, and it can keep good stability and reliability, service life under the adverse circumstances such as high temperature
Greatly improve；The preparation method of the present invention simultaneously, raw material is easy to get, and cost is low, technique is concise, with higher practical value and good
Good application prospect.
Embodiment
With reference to specific embodiment, the technical scheme in the embodiment of the present invention is clearly and completely described, shown
So, described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the reality in the present invention
Example is applied, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made all belongs to
In the scope of protection of the invention.
Embodiment 1.
A kind of highly sensitive high temperature resistant thermistor composite material of the present embodiment, includes the raw material of following parts by weight：
5 parts of graphene, 45 parts of polymeric material, 3 parts of lucium, conduction help 15 parts of material, 3 parts of coupling agent, metal oxide
6 parts of filler, 20 parts of acrylic resin, 3 parts of crosslinking coagent, 2 parts of auxiliary agent of increasing property.
Graphene in the present embodiment is bilayer graphene；
Polymeric material in the present embodiment for Kynoar and modified by maleic acid anhydride graft Kynoar according to weight
Than 6:The mixture of 1 composition, the grafting rate of the Kynoar of the modified by maleic acid anhydride graft is 1.3%.
Lucium in the present embodiment be comprising lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium hopcalite.
Conduction in the present embodiment helps material to include the raw material of following parts by weight：5 parts of carbon fiber, 3 parts of carbon black, conductivity ceramics powder
Last 1 part, 2 parts of multi-walled carbon nanotube.
Coupling agent in the present embodiment is silane coupler.
Metal oxide filler in the present embodiment is zinc oxide, titanium sesquioxide, aluminum oxide compare 3 according to weight:1:2 groups
Into mixture.
Crosslinking coagent in the present embodiment is trimethylolpropane trimethacrylate；
Increasing auxiliary agent in the present embodiment is antioxidant and lubricant according to weight ratio 1:The mixture of 2 compositions, the antioxidant
For phenols or amine antioxidants, the lubricant is zinc stearate and calcium stearate according to weight ratio 2:The mixture of 3 compositions.
A kind of preparation method of highly sensitive high temperature resistant thermistor composite material of the present embodiment, comprises the following steps：
Step one, weigh on request and prepare each component raw material；
Step 2, helps material, metal oxide filler to add in high speed mixer coupling agent, lucium, conduction, in stirring
Rotating speed is under 300r/min, stirring 20 minutes obtains mixture A；
Step 3, polymeric material, acrylic resin are added in banbury, temperature be 165 DEG C, rotating speed be 100r/min
Under, stirring mixing 8 minutes；Crosslinking coagent, increasing property auxiliary agent are added, continues to mix 7 minutes, adds the mixing of step 2 preparation
Thing A, graphene, by temperature be increased to 175 DEG C, rotating speed be increased to 400r/min, continue to stir 30 minutes, obtain mixture B；
Step 4, mixture B things are added in mould, are placed in flat press, are preheated in the case where temperature is 165 DEG C
10min, then the hot pressing 8min in the case where pressure is 12MPa, is cooled to after room temperature and takes out, and the thick composites of 1mm are made, then will system
Standby composite is put into vacuum constant-temperature container and is heat-treated, the constant temperature 10h at 135 DEG C of temperature, is subsequently cooled to room temperature and obtains
The highly sensitive high temperature resistant thermistor composite material of the present invention.
Embodiment 2.
A kind of highly sensitive high temperature resistant thermistor composite material of the present embodiment, includes the raw material of following parts by weight：
7 parts of graphene, 55 parts of polymeric material, 7 parts of lucium, conduction help 25 parts of material, 5 parts of coupling agent, metal oxide
8 parts of filler, 30 parts of acrylic resin, 5 parts of crosslinking coagent, 4 parts of auxiliary agent of increasing property.
Graphene in the present embodiment is bilayer graphene；
Polymeric material in the present embodiment for Kynoar and modified by maleic acid anhydride graft Kynoar according to weight
Than 6:The mixture of 1 composition, the grafting rate of the Kynoar of the modified by maleic acid anhydride graft is 1.3%.
Lucium in the present embodiment be comprising lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium hopcalite.
Conduction in the present embodiment helps material to include the raw material of following parts by weight：7 parts of carbon fiber, 5 parts of carbon black, conductivity ceramics powder
Last 3 parts, 4 parts of multi-walled carbon nanotube.
Coupling agent in the present embodiment is titanate coupling agent.
Metal oxide filler in the present embodiment is zinc oxide, titanium sesquioxide, aluminum oxide compare 3 according to weight:1:2 groups
Into mixture.
Crosslinking coagent in the present embodiment is trimethylolpropane trimethacrylate；
Increasing auxiliary agent in the present embodiment is antioxidant and lubricant according to weight ratio 1:The mixture of 2 compositions, the antioxidant
For phenols or amine antioxidants, the lubricant is zinc stearate and calcium stearate according to weight ratio 2:The mixture of 3 compositions.
A kind of preparation method of highly sensitive high temperature resistant thermistor composite material of the present embodiment, comprises the following steps：
Step one, weigh on request and prepare each component raw material；
Step 2, helps material, metal oxide filler to add in high speed mixer coupling agent, lucium, conduction, in stirring
Rotating speed is under 400 r/min, stirring 30 minutes obtains mixture A；
Step 3, polymeric material, acrylic resin are added in banbury, temperature be 175 DEG C, rotating speed be 160r/min
Under, stirring mixing 12 minutes；Crosslinking coagent, increasing property auxiliary agent are added, continues to mix 9 minutes, the mixed of step 2 preparation is added
Compound A, graphene, by temperature be increased to 185 DEG C, rotating speed be increased to 500r/min, continue to stir 40 minutes, obtain mixture B；
Step 4, mixture B things are added in mould, are placed in flat press, are preheated in the case where temperature is 175 DEG C
12min, then the hot pressing 12min in the case where pressure is 14MPa, is cooled to after room temperature and takes out, and the thick composites of 3mm are made, then will
The composite of preparation is put into vacuum constant-temperature container and is heat-treated, the constant temperature 16h at 145 DEG C of temperature, is subsequently cooled to room temperature and obtains
To the highly sensitive high temperature resistant thermistor composite material of the present invention.
Embodiment 3.
A kind of highly sensitive high temperature resistant thermistor composite material of the present embodiment, includes the raw material of following parts by weight：
6 parts of graphene, 50 parts of polymeric material, 5 parts of lucium, conduction help 20 parts of material, 4 parts of coupling agent, metal oxide
7 parts of filler, 25 parts of acrylic resin, 4 parts of crosslinking coagent, 3 parts of auxiliary agent of increasing property.
Graphene in the present embodiment is bilayer graphene；
Polymeric material in the present embodiment for Kynoar and modified by maleic acid anhydride graft Kynoar according to weight
Than 6:The mixture of 1 composition, the grafting rate of the Kynoar of the modified by maleic acid anhydride graft is 1.3%.
Lucium in the present embodiment be comprising lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium hopcalite.
Conduction in the present embodiment helps material to include the raw material of following parts by weight：6 parts of carbon fiber, 4 parts of carbon black, conductivity ceramics powder
Last 2 parts, 3 parts of multi-walled carbon nanotube.
Coupling agent in the present embodiment is aluminate coupling agent.
Metal oxide filler in the present embodiment is zinc oxide, titanium sesquioxide, aluminum oxide compare 3 according to weight:1:2 groups
Into mixture.
Crosslinking coagent in the present embodiment is trimethylolpropane trimethacrylate；
Increasing auxiliary agent in the present embodiment is antioxidant and lubricant according to weight ratio 1:The mixture of 2 compositions, the antioxidant
For phenols or amine antioxidants, the lubricant is zinc stearate and calcium stearate according to weight ratio 2:The mixture of 3 compositions.
A kind of preparation method of highly sensitive high temperature resistant thermistor composite material of the present embodiment, comprises the following steps：
Step one, weigh on request and prepare each component raw material；
Step 2, helps material, metal oxide filler to add in high speed mixer coupling agent, lucium, conduction, in stirring
Rotating speed is under 350r/min, stirring 25 minutes obtains mixture A；
Step 3, polymeric material, acrylic resin are added in banbury, temperature be 170 DEG C, rotating speed be 130r/min
Under, stirring mixing 10 minutes；Crosslinking coagent, increasing property auxiliary agent are added, continues to mix 8 minutes, the mixed of step 2 preparation is added
Compound A, graphene, by temperature be increased to 180 DEG C, rotating speed be increased to 450r/min, continue to stir 35 minutes, obtain mixture B；
Step 4, mixture B things are added in mould, are placed in flat press, are preheated in the case where temperature is 170 DEG C
11min, then the hot pressing 10min in the case where pressure is 13MPa, is cooled to after room temperature and takes out, and the thick composites of 2mm are made, then will
The composite of preparation is put into vacuum constant-temperature container and is heat-treated, the constant temperature 13h at 140 DEG C of temperature, is subsequently cooled to room temperature and obtains
To the highly sensitive high temperature resistant thermistor composite material of the present invention.
A kind of highly sensitive high temperature resistant thermistor composite material of the present invention starting resistance is low, fast response time, temperature
Superior with resistance correlation, it can keep good stability and reliability under the adverse circumstances such as high temperature, and service life is big
It is big to improve；While the preparation method of the present invention, raw material is easy to get, cost is low, technique is concise, with higher practical value and well
Application prospect.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.
Claims (10)
1. a kind of highly sensitive high temperature resistant thermistor composite material, it is characterised in that include the raw material of following parts by weight：
5-7 parts of graphene, 45-55 parts of polymeric material, 3-7 parts of lucium, conduction help material 15-25 parts, coupling agent 3-5
Part, 6-8 parts of metal oxide filler, 20-30 parts of acrylic resin, 3-5 parts of crosslinking coagent, 2-4 parts of auxiliary agent of increasing property.
2. a kind of highly sensitive high temperature resistant thermistor composite material according to claim 1, it is characterised in that the Gao Ling
Quick high temperature resistant thermistor composite material includes the raw material of following parts by weight：
6 parts of graphene, 50 parts of polymeric material, 5 parts of lucium, conduction help 20 parts of material, 4 parts of coupling agent, metal oxide
7 parts of filler, 25 parts of acrylic resin, 4 parts of crosslinking coagent, 3 parts of auxiliary agent of increasing property.
3. a kind of highly sensitive high temperature resistant thermistor composite material according to claim 1 or 2, it is characterised in that described
Graphene is bilayer graphene；
The polymeric material is the Kynoar of Kynoar and modified by maleic acid anhydride graft according to weight ratio 6:1 composition
Mixture, the grafting rate of the Kynoar of the modified by maleic acid anhydride graft is 1.3%.
4. a kind of highly sensitive high temperature resistant thermistor composite material according to claim 1 or 2, it is characterised in that described
Lucium be comprising lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium hopcalite.
5. a kind of highly sensitive high temperature resistant thermistor composite material according to claim 1 or 2, it is characterised in that described
Conduction helps material to include the raw material of following parts by weight：5-7 parts of carbon fiber, 3-5 parts of carbon black, 1-3 parts of conductivity ceramics powder, many wall carbon are received
2-4 parts of mitron.
6. a kind of highly sensitive high temperature resistant thermistor composite material according to claim 1 or 2, it is characterised in that described
Coupling agent is the one or more in silane coupler, titanate coupling agent, aluminate coupling agent.
7. a kind of highly sensitive high temperature resistant thermistor composite material according to claim 1 or 2, it is characterised in that described
Metal oxide filler is zinc oxide, titanium sesquioxide, aluminum oxide compare 3 according to weight:1:The mixture of 2 compositions.
8. a kind of highly sensitive high temperature resistant thermistor composite material according to claim 1 or 2, it is characterised in that described
Crosslinking coagent is trimethylolpropane trimethacrylate；
The increasing property auxiliary agent is antioxidant and lubricant according to weight ratio 1:2 composition mixtures, the antioxidant be phenols or
Amine antioxidants, the lubricant is zinc stearate and calcium stearate according to weight ratio 2:The mixture of 3 compositions.
9. a kind of method for preparing highly sensitive high temperature resistant thermistor composite material as claimed in claim 1 or 2, its feature exists
In comprising the following steps：
Step one, weigh on request and prepare each component raw material；
Step 2, helps material, metal oxide filler to add in high speed mixer coupling agent, lucium, conduction, in stirring
Rotating speed is under 300-400 r/min, stirring 20-30 minutes obtains mixture A；
Step 3, polymeric material, acrylic resin are added in banbury, temperature be 165-175 DEG C, rotating speed be 100-
Under 160r/min, stirring mixing 8-12 minutes；Crosslinking coagent, increasing property auxiliary agent are added, continues to mix 7-9 minutes, adds step
It is rapid two prepare mixture A, graphene, by temperature be increased to 175-185 DEG C, rotating speed be increased to 400-500r/min, continue to stir
Mix 30-40 minutes, obtain mixture B；
Step 4, mixture B things are added in mould, are placed in flat press, are preheated in the case where temperature is 165-175 DEG C
10-12min, then the hot pressing 8-12min in the case where pressure is 12-14MPa, is cooled to after room temperature and takes out, the compound of 1-3mm thickness is made
Material, then the composite of preparation is put into vacuum constant-temperature container be heat-treated, the constant temperature 10-16h at 135-145 DEG C of temperature,
It is subsequently cooled to the highly sensitive high temperature resistant thermistor composite material that room temperature obtains the present invention.
10. a kind of preparation method of highly sensitive high temperature resistant thermistor composite material according to claim 9, its feature exists
In the step is：
Step one, weigh on request and prepare each component raw material；
Step 2, helps material, metal oxide filler to add in high speed mixer coupling agent, lucium, conduction, in stirring
Rotating speed is under 350r/min, stirring 25 minutes obtains mixture A；
Step 3, polymeric material, acrylic resin are added in banbury, temperature be 170 DEG C, rotating speed be 130r/min
Under, stirring mixing 10 minutes；Crosslinking coagent, increasing property auxiliary agent are added, continues to mix 8 minutes, the mixed of step 2 preparation is added
Compound A, graphene, by temperature be increased to 180 DEG C, rotating speed be increased to 450r/min, continue to stir 35 minutes, obtain mixture B；
Step 4, mixture B things are added in mould, are placed in flat press, are preheated in the case where temperature is 170 DEG C
11min, then the hot pressing 10min in the case where pressure is 13MPa, is cooled to after room temperature and takes out, and the thick composites of 2mm are made, then will
The composite of preparation is put into vacuum constant-temperature container and is heat-treated, the constant temperature 13h at 140 DEG C of temperature, is subsequently cooled to room temperature and obtains
To the highly sensitive high temperature resistant thermistor composite material of the present invention.
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| CN108485034A (en) * | 2018-04-23 | 2018-09-04 | 合肥羿振电力设备有限公司 | A kind of thermistor composite material and preparation method thereof |
| CN110511411A (en) * | 2019-09-04 | 2019-11-29 | 电子科技大学 | A kind of preparation method of temperature sensitive flexible membrane, sensor and flexible membrane |
| WO2021235095A1 (en) * | 2020-05-18 | 2021-11-25 | 株式会社クレハ | Temperature-sensor resin composition and method for manufacturing same, and temperature-sensor element |
| CN114539702A (en) * | 2022-02-11 | 2022-05-27 | 浙江涌原新能科技股份有限公司 | Polymer material for looped network treatment control device and preparation method thereof |
| CN115244631A (en) * | 2020-02-25 | 2022-10-25 | 力特保险丝公司 | PPTC heaters and materials with stable power and self-limiting characteristics |
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| CN108485034A (en) * | 2018-04-23 | 2018-09-04 | 合肥羿振电力设备有限公司 | A kind of thermistor composite material and preparation method thereof |
| CN110511411A (en) * | 2019-09-04 | 2019-11-29 | 电子科技大学 | A kind of preparation method of temperature sensitive flexible membrane, sensor and flexible membrane |
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| CN115244631A (en) * | 2020-02-25 | 2022-10-25 | 力特保险丝公司 | PPTC heaters and materials with stable power and self-limiting characteristics |
| WO2021235095A1 (en) * | 2020-05-18 | 2021-11-25 | 株式会社クレハ | Temperature-sensor resin composition and method for manufacturing same, and temperature-sensor element |
| CN114539702A (en) * | 2022-02-11 | 2022-05-27 | 浙江涌原新能科技股份有限公司 | Polymer material for looped network treatment control device and preparation method thereof |
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Application publication date: 20171024 |