CN114539702B - Polymer material for looped network treatment control device and preparation method thereof - Google Patents
Polymer material for looped network treatment control device and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a polymer material for a looped network treatment control device and a preparation method thereof, and is characterized by comprising the following components in parts by weight: amino-terminated hyperbranched polysiloxane HPSi-NH 2 5-8 parts of polymer 40-50 parts, conductive filler 35-45 parts, graphene fiber 3-5 parts, nano boron fiber 2-4 parts, coupling agent 1-3 parts and antioxidant 0.5-2.5 parts; the polymer is prepared from 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethyl phenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione and glycidyl methacrylate through free radical copolymerization. The polymer material for the ring network treatment control device disclosed by the invention has good ageing resistance, pressure resistance, flow resistance, heat resistance, circulation stability and PCT (PCT) characteristic and strength.
Description
Technical Field
The invention relates to the technical field of thermistors, in particular to a polymer material for a looped network management control device and a preparation method thereof.
Background
With the development of power grids and the improvement of equipment technologies, looped network management control devices are widely used in the power grids. Because the looped netowrk administering control device is in long-term operation, unusual such as temperature, humidity, very easily lead to the potential safety hazard to destroy the safe and reliable operation of electric wire netting. Therefore, the device is very necessary for carrying out long-term effective monitoring, timely alarming and rapid management and protection on abnormal conditions in the ring network management control device. In order to play an over-current or over-temperature protection role, the polymer material for the looped network management control device is very commonly used.
The polymer material for the looped network management control device which plays a role in overcurrent or overtemperature protection is a common thermistor material. The thermistor material is an electronic element with very wide application, and is widely applied to computers and external equipment thereof, mobile phones, battery packs, transformers, industrial control equipment, automobiles and other electronic products to play a role in overcurrent or over-temperature protection. The high polymer thermistor material has the outstanding advantages of light weight, simple preparation process, low cost, unlimited shape and the like, and is gradually replaced by barium titanate ceramics to be widely applied in industry as an overcurrent protection device, a constant temperature automatic heating device, a temperature compensation device, a fire alarm device and the like.
The polymer thermistor is usually prepared by blending conductive fillers such as carbon black, carbon fibers or metal particles with certain polymer matrixes, and has a good Positive Temperature Coefficient (PTC) effect. However, the existing polymer thermistor has poor stability and short service life, and is impacted by external electricity for 10 times, and the room temperature resistance value is increased by more than 5 ohms, namely the polymer thermistor can not be used any more. The polymer thermistor in the market has the defects of poor ageing resistance, insufficient PCT (PCT) characteristic and strength, low heat-resistant temperature, poor cycle stability and unsatisfactory pressure resistance and current resistance.
Chinese patent No. CN102558638B provides a positive temperature coefficient material that is the product of melting a mixture comprising a polymer, a conductive filler, a nucleating agent, an additive, a flame retardant, and a lubricant; based on the total weight of the mixture, the content of the additive is 0.5-10wt%, the content of the polymer is 5-15wt%, the content of the nucleating agent is 0.5-10wt%, the content of the lubricant is 0.5-3wt%, the content of the conductive filler is 80-90wt%, and the content of the flame retardant is 1-6wt%; the additive is ethylene propylene diene monomer rubber, the conductive filler is titanate modified conductive filler, and the flame retardant is titanate modified flame retardant. The invention also provides a preparation method of the material and a thermistor containing the material. The positive temperature coefficient material has good ageing resistance, pressure resistance and flow resistance. However, PCT characteristics and strength, heat resistance and cycle stability thereof are to be further improved.
Therefore, the polymer material for the looped network treatment control device, which has the advantages of good ageing resistance, pressure resistance, flow resistance, heat resistance, circulation stability and PCT (natural temperature) characteristics and strength, is developed, meets the market demand, has wide market value, and has very important significance in promoting the development of the field of thermistors.
Disclosure of Invention
The invention mainly aims to provide a polymer material for a looped network treatment control device, which has good ageing resistance, pressure resistance, flow resistance, heat resistance, circulation stability and PCT (natural temperature) characteristic and strength, and a preparation method thereof.
In order to achieve the purpose, the invention provides a polymer material for a ring network treatment control device, which is characterized by comprising the following components in parts by weight: amino-terminated hyperbranched polysiloxane HPSi-NH 2 5-8 parts of polymer 40-50 parts, conductive filler 35-45 parts, graphene fiber 3-5 parts, nano boron fiber 2-4 parts, coupling agent 1-3 parts and antioxidant 0.5-2.5 parts; the polymer is prepared from 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethyl phenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione and glycidyl methacrylate through free radical copolymerization.
Preferably, the antioxidant is any one or more of antioxidant 1010, compound antioxidant B225 and antioxidant 1076.
Preferably, the coupling agent is at least one of a silane coupling agent KH550, a silane coupling agent KH560 and a silane coupling agent KH 570.
Preferably, the average diameter of the nano boron fiber is 100-300nm, and the length-diameter ratio is (15-20): 1.
Preferably, the average diameter of the graphene fiber is 3-9 μm, and the length-diameter ratio is (20-30): 1.
Preferably, the conductive filler is at least one of acetylene black, carbon nanotubes, graphene, nickel powder and silver powder.
Preferably, the particle size of the conductive filler is 800-1200 mesh.
Preferably, the preparation method of the polymer comprises the following steps: adding 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethyl phenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-diketone, glycidyl methacrylate and an initiator into a high boiling point solvent, stirring and reacting for 3-6 hours under the inert gas atmosphere at 65-75 ℃, cooling to room temperature, precipitating in water, washing the precipitated polymer with ethanol for 3-6 times, and finally drying to constant weight in a vacuum drying box at 85-95 ℃.
Preferably, the mass ratio of the 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethyl phenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione, glycidyl methacrylate, an initiator and a high boiling point solvent is 1 (3-5): 0.8-1.2): 1-2): 0.06-0.09): 25-40.
Preferably, the initiator is at least one of azodiisobutyronitrile and azodiisoheptonitrile; the high boiling point solvent is at least one of dimethyl sulfoxide, N-dimethylformamide and N-methylpyrrolidone; the inert gas is any one of nitrogen, helium, neon and argon.
The amino-terminated hyperbranched polysiloxane HPSi-NH 2 In one embodiment of the invention, the amino-terminated hyperbranched polysiloxane HPSi-NH is of no particular origin 2 Is prepared according to the method of the first embodiment of the Chinese patent of the CN 201910338290.3.
The invention also provides a preparation method of the polymer material for the ring network treatment control device, which is characterized by comprising the following steps: and mixing, mixing and molding the components according to the parts by weight to obtain the polymer material for the looped network treatment control device.
Preferably, the mixing, kneading, forming are the mixing, kneading, forming process steps known in the art. For example, specific conditions for kneading in the present invention are: the temperature is 180-230 ℃, the rotating speed is 60-110 rpm, and the time is 0.5-2.5 hours; the specific conditions of the compression molding are as follows: the pressing pressure is 55-85MPa, the temperature is 115-125 ℃, and the pressing time is 9-15 seconds.
Due to the application of the technical scheme, the invention has the following beneficial effects:
(1) The preparation method of the polymer material for the looped network treatment control device disclosed by the invention is simple and easy to implement, has easily controlled conditions, has high preparation effect and high finished product qualification rate, and is suitable for industrial production.
(2) According to the polymer material for the ring network treatment control device, through mutual matching and combined action of the components, the prepared polymer material for the ring network treatment control device has good ageing resistance, pressure resistance, flow resistance, heat resistance, circulation stability and PCT (PCT) characteristic and strength.
(3) The invention discloses a polymer material for a looped network treatment control device, which is prepared from 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethyl phenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione and glycidyl methacrylate through free radical copolymerization; the polymer molecular chain contains trifluoro quinoline, cyano trifluoro phenyl, amido, indolinone and ester group, which are matched to cooperate to make the prepared material have good anti-aging performance, performance stability and heat resistance under the multiple actions of electronic effect, steric effect and conjugation effect.
(4) The invention discloses a polymer material for a ring network treatment control device, amino-terminated hyperbranched polysiloxane HPSi-NH 2 The amino group can react with epoxy groups on a polymer molecular chain in the material forming process to form a uniform and stable crosslinking structure, so that the heat resistance stability of the product is effectively improved, and the current resistance, voltage resistance and cycle stability of the product are improved. The graphene fiber and the nano boron fiber are added to cooperate with other components, so that the mechanical properties of the material can be improved, and meanwhile, the final product PCT (PCT) characteristic and excellent strength can be ensured.
Detailed Description
The following description is for the purpose of disclosureThe present invention enables one skilled in the art to practice the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The amino-terminated hyperbranched polysiloxane HPSi-NH 2 Is prepared according to the method of the first embodiment of the Chinese patent of the CN 201910338290.3.
Example 1
The polymer material for the ring network treatment control device is characterized by comprising the following components in parts by weight: amino-terminated hyperbranched polysiloxane HPSi-NH 2 5 parts of polymer 40 parts, 35 parts of conductive filler, 3 parts of graphene fiber, 2 parts of nano boron fiber, 1 part of coupling agent and 0.5 part of antioxidant; the polymer is prepared from 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethyl phenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione and glycidyl methacrylate through free radical copolymerization.
The antioxidant is antioxidant 1010; the coupling agent is a silane coupling agent KH550.
The average diameter of the nano boron fiber is 100nm, and the length-diameter ratio is 15:1; the average diameter of the graphene fiber is 3 mu m, and the length-diameter ratio is 20:1; the conductive filler is acetylene black; the particle size of the conductive filler is 800 meshes.
The preparation method of the polymer comprises the following steps: adding 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethyl phenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione, glycidyl methacrylate and an initiator into a high boiling point solvent, stirring and reacting for 3 hours at 65 ℃ under inert gas atmosphere, cooling to room temperature, precipitating in water, washing the precipitated polymer with ethanol for 3 times, and finally drying to constant weight at 85 ℃ in a vacuum drying oven.
The mass ratio of the 4-vinyl-2, 8-bis (trifluoromethyl) quinoline to the N- (4-cyano-3-trifluoromethyl phenyl) methacrylamide to the 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione to the glycidyl methacrylate to the initiator to the high boiling point solvent is 1:3:0.8:1:0.06:25; the initiator is azodiisobutyronitrile; the high boiling point solvent is dimethyl sulfoxide; the inert gas is nitrogen.
The preparation method of the polymer material for the ring network treatment control device is characterized by comprising the following steps of: and mixing, mixing and molding the components according to the parts by weight to obtain the polymer material for the looped network treatment control device.
The mixing, milling and forming are the mixing, milling and forming process steps known in the art; the specific mixing conditions are as follows: the temperature is 180 ℃, the rotating speed is 60 revolutions per minute, and the time is 0.5 hour; the specific conditions of the compression molding are as follows: the pressing pressure was 55MPa, the temperature was 115℃and the pressing time was 9 seconds.
Example 2
The polymer material for the ring network treatment control device is characterized by comprising the following components in parts by weight: amino-terminated hyperbranched polysiloxane HPSi-NH 2 6 parts of polymer 43 parts, 38 parts of conductive filler, 3.5 parts of graphene fiber, 2.5 parts of nano boron fiber, 1.5 parts of coupling agent and 1 part of antioxidant; the polymer is prepared from 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethyl phenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione and glycidyl methacrylate through free radical copolymerization.
The antioxidant is a compound antioxidant B225; the coupling agent is silane coupling agent KH560; the average diameter of the nano boron fiber is 150nm, and the length-diameter ratio is 16:1; the average diameter of the graphene fiber is 5 mu m, and the length-diameter ratio is 23:1; the conductive filler is a carbon nano tube; the particle size of the conductive filler is 900 meshes.
The preparation method of the polymer comprises the following steps: adding 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethyl phenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione, glycidyl methacrylate and an initiator into a high boiling point solvent, stirring and reacting for 4 hours at 67 ℃ under inert gas atmosphere, cooling to room temperature, precipitating in water, washing the precipitated polymer with ethanol for 4 times, and finally drying to constant weight at 87 ℃ in a vacuum drying oven.
The mass ratio of the 4-vinyl-2, 8-bis (trifluoromethyl) quinoline to the N- (4-cyano-3-trifluoromethyl phenyl) methacrylamide to the 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione to the glycidyl methacrylate to the initiator to the high boiling point solvent is 1:3.5:0.9:1.3:0.07:28; the initiator is azo diisoheptonitrile; the high boiling point solvent is N, N-dimethylformamide; the inert gas is helium.
The preparation method of the polymer material for the ring network treatment control device is characterized by comprising the following steps of: mixing, mixing and shaping the components according to the weight parts to obtain a polymer material for the looped network treatment control device; the mixing, milling and forming are the mixing, milling and forming process steps known in the art; the specific mixing conditions are as follows: the temperature is 195 ℃, the rotating speed is 80 rpm, and the time is 1 hour; the specific conditions of the compression molding are as follows: the pressing pressure was 65MPa, the temperature was 118℃and the pressing time was 11 seconds.
Example 3
The polymer material for the ring network treatment control device is characterized by comprising the following components in parts by weight: amino-terminated hyperbranched polysiloxane HPSi-NH 2 6.5 parts of polymer 45 parts, 40 parts of conductive filler, 4 parts of graphene fiber, 3 parts of nano boron fiber, 2 parts of coupling agent and 1.8 parts of antioxidant; the polymer is prepared from 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethyl phenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione and glycidyl methacrylate through free radical copolymerization.
The antioxidant is antioxidant 1076; the coupling agent is a silane coupling agent KH570; the average diameter of the nano boron fiber is 200nm, and the length-diameter ratio is 18:1; the average diameter of the graphene fiber is 6 mu m, and the length-diameter ratio is 25:1; the conductive filler is graphene; the particle size of the conductive filler is 1000 meshes.
The preparation method of the polymer comprises the following steps: adding 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethyl phenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione, glycidyl methacrylate and an initiator into a high boiling point solvent, stirring and reacting for 4.5 hours at 70 ℃ under inert gas atmosphere, cooling to room temperature, precipitating in water, washing the precipitated polymer with ethanol for 5 times, and finally drying to constant weight at 90 ℃ in a vacuum drying oven.
The mass ratio of the 4-vinyl-2, 8-bis (trifluoromethyl) quinoline to the N- (4-cyano-3-trifluoromethyl phenyl) methacrylamide to the 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione to the glycidyl methacrylate to the initiator to the high boiling point solvent is 1:4:1:1.5:0.075:33; the initiator is azodiisobutyronitrile; the high boiling point solvent is N-methyl pyrrolidone; the inert gas is neon.
The preparation method of the polymer material for the ring network treatment control device is characterized by comprising the following steps of: mixing, mixing and shaping the components according to the weight parts to obtain a polymer material for the looped network treatment control device; the mixing, milling and forming are the mixing, milling and forming process steps known in the art; the specific mixing conditions are as follows: the temperature is 210 ℃, the rotating speed is 90 revolutions per minute, and the time is 1.5 hours; the specific conditions of the compression molding are as follows: the pressing pressure was 75MPa, the temperature was 120℃and the pressing time was 13 seconds.
Example 4
The polymer material for the ring network treatment control device is characterized by comprising the following components in parts by weight: amino-terminated hyperbranched polysiloxane HPSi-NH 2 7.5 parts of polymer 48 parts, 43 parts of conductive filler, 4.5 parts of graphene fiber, 3.5 parts of nano boron fiber, 2.5 parts of coupling agent and 2.2 parts of antioxidant; the polymer is prepared from 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethyl phenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione and glycidyl methacrylate through free radical copolymerization.
The antioxidant is a mixture formed by mixing an antioxidant 1010, a composite antioxidant B225 and an antioxidant 1076 according to a mass ratio of 1:3:2; the coupling agent is a mixture formed by mixing a silane coupling agent KH550, a silane coupling agent KH560 and a silane coupling agent KH570 according to a mass ratio of 1:1:3; the average diameter of the nano boron fiber is 280nm, and the length-diameter ratio is 19:1; the average diameter of the graphene fiber is 8 mu m, and the length-diameter ratio is 28:1; the conductive filler is a mixture formed by mixing acetylene black, carbon nano tubes, graphene, nickel powder and silver powder according to a mass ratio of 1:2:2:1:1; the particle size of the conductive filler is 1100 meshes.
The preparation method of the polymer comprises the following steps: adding 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethyl phenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione, glycidyl methacrylate and an initiator into a high boiling point solvent, stirring and reacting for 5.5 hours at 73 ℃ under inert gas atmosphere, cooling to room temperature, precipitating in water, washing the precipitated polymer with ethanol for 6 times, and finally drying to constant weight at 93 ℃ in a vacuum drying oven.
The mass ratio of the 4-vinyl-2, 8-bis (trifluoromethyl) quinoline to the N- (4-cyano-3-trifluoromethyl phenyl) methacrylamide to the 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione to the glycidyl methacrylate to the initiator to the high boiling point solvent is 1:4.5:1.1:1.8:0.085:37; the initiator is a mixture formed by mixing azobisisobutyronitrile and azobisisoheptonitrile according to a mass ratio of 3:5; the high boiling point solvent is a mixture formed by mixing dimethyl sulfoxide, N-dimethylformamide and N-methylpyrrolidone according to a mass ratio of 1:2:3; the inert gas is argon.
The preparation method of the polymer material for the ring network treatment control device is characterized by comprising the following steps of: mixing, mixing and shaping the components according to the weight parts to obtain a polymer material for the looped network treatment control device; the mixing, milling and forming are the mixing, milling and forming process steps known in the art; the specific mixing conditions are as follows: the temperature is 220 ℃, the rotating speed is 100 revolutions per minute, and the time is 2.2 hours; the specific conditions of the compression molding are as follows: the pressing pressure was 80MPa, the temperature was 123℃and the pressing time was 13 seconds.
Example 5
The polymer material for the ring network treatment control device is characterized by comprising the following components in parts by weight: amino-terminated hyperbranched polysiloxane HPSi-NH 2 8 parts of polymer 50 parts, 45 parts of conductive filler, 5 parts of graphene fiber, 4 parts of nano boron fiber, 3 parts of coupling agent and 2.5 parts of antioxidant; the polymer is prepared from 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethyl phenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione and glycidyl methacrylate through free radical copolymerization.
The antioxidant is antioxidant 1010; the coupling agent is a silane coupling agent KH550; the average diameter of the nano boron fiber is 300nm, and the length-diameter ratio is 20:1; the average diameter of the graphene fiber is 9 mu m, and the length-diameter ratio is 30:1; the conductive filler is silver powder; the particle size of the conductive filler is 1200 meshes.
The preparation method of the polymer comprises the following steps: adding 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethyl phenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione, glycidyl methacrylate and an initiator into a high boiling point solvent, stirring and reacting for 6 hours at 75 ℃ under inert gas atmosphere, cooling to room temperature, precipitating in water, washing the precipitated polymer with ethanol for 6 times, and finally drying to constant weight at 95 ℃ in a vacuum drying oven.
The mass ratio of the 4-vinyl-2, 8-bis (trifluoromethyl) quinoline to the N- (4-cyano-3-trifluoromethyl phenyl) methacrylamide to the 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione to the glycidyl methacrylate to the initiator to the high boiling point solvent is 1:5:1.2:2:0.09:40; the initiator is azo diisoheptonitrile; the high boiling point solvent is N, N-dimethylformamide; the inert gas is nitrogen.
The preparation method of the polymer material for the ring network treatment control device is characterized by comprising the following steps of: mixing, mixing and shaping the components according to the weight parts to obtain a polymer material for the looped network treatment control device; the mixing, milling and shaping are the mixing, milling and shaping process steps known in the art. The specific mixing conditions are as follows: the temperature is 230 ℃, the rotating speed is 110 revolutions per minute, and the time is 2.5 hours; the specific conditions of the compression molding are as follows: the pressing pressure was 85MPa, the temperature was 125℃and the pressing time was 15 seconds.
Comparative example 1
The present invention provides a polymer material for a loop network administration control apparatus, which is similar to example 1, except that no amino-terminated hyperbranched polysiloxane HPSi-NH is added 2 。
Comparative example 2
The invention provides a polymer material for a looped network management control device, which is similar to the embodiment 1, except that graphene fibers and nano boron fibers are not added.
Comparative example 3
The present invention provides a polymer material for a looped network management control apparatus, which is similar to example 1, except that 4-vinyl-2, 8-bis (trifluoromethyl) quinoline is not added.
In order to further illustrate the beneficial technical effects of the polymer materials for the ring network management control device manufactured by the embodiments of the present invention, the polymer materials for the ring network management control device manufactured by the embodiments 1 to 5 and the comparative examples 1 to 3 are subjected to relevant performance tests, the test results are shown in table 1, and the test method is shown in the test method in CN 102558638B; when the pressure resistance test is carried out, umax is applied to two ends of the polymer material for 2 hours, the PTC is not burnt and cracked, and the polymer material is qualified, otherwise, the polymer material is unqualified; and (3) during the current resistance test, adding Imax at two ends of the polymer material for the ring network treatment control device, and performing 100 times of circulation for 6s and 60s to ensure that the polymer material is not burnt and cracked, namely the polymer material is qualified, or else, the polymer material is unqualified.
TABLE 1
As can be seen from the data in Table 1, the polymer material for the ring network management control device prepared by the embodiment of the invention has excellent ageing resistance, voltage resistance and current resistance, and has higher PTC strength, which is the result of the synergistic effect of the components.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The polymer material for the ring network treatment control device is characterized by comprising the following components in parts by weight: amino-terminated hyperbranched polysiloxane HPSi-NH 2 5-8 parts of polymer 40-50 parts, conductive filler 35-45 parts, graphene fiber 3-5 parts, nano boron fiber 2-4 parts, coupling agent 1-3 parts and antioxidant 0.5-2.5 parts;
the preparation method of the polymer comprises the following steps: adding 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethyl phenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione, glycidyl methacrylate and an initiator into a high boiling point solvent, stirring and reacting for 3-6 hours at 65-75 ℃ in an inert gas atmosphere, cooling to room temperature, precipitating in water, washing the precipitated polymer with ethanol for 3-6 times, and finally drying to constant weight at 85-95 ℃ in a vacuum drying oven; the mass ratio of the 4-vinyl-2, 8-bis (trifluoromethyl) quinoline to N- (4-cyano-3-trifluoromethyl phenyl) methacrylamide to the 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione to the glycidyl methacrylate to the initiator to the high boiling point solvent is 1 (3-5) (0.8-1.2) (1-2) (0.06-0.09) (25-40).
2. The polymer material for the ring network management control device according to claim 1, wherein the antioxidant is any one or more of antioxidant 1010, composite antioxidant B225 and antioxidant 1076.
3. The polymer material for a ring network management control device according to claim 1, wherein the coupling agent is at least one of a silane coupling agent KH550, a silane coupling agent KH560, and a silane coupling agent KH 570.
4. The polymer material for a looped network management control apparatus according to claim 1, wherein the average diameter of the nano boron fiber is 100-300nm, and the length-diameter ratio is (15-20): 1; the average diameter of the graphene fiber is 3-9 mu m, and the length-diameter ratio is (20-30): 1.
5. The polymer material for the ring network management control device according to claim 1, wherein the conductive filler is at least one of acetylene black, carbon nanotubes, graphene, nickel powder and silver powder; the particle size of the conductive filler is 800-1200 meshes.
6. The polymer material for a looped network management control apparatus according to claim 1, wherein the initiator is at least one of azobisisobutyronitrile and azobisisoheptonitrile; the high boiling point solvent is at least one of dimethyl sulfoxide, N-dimethylformamide and N-methylpyrrolidone; the inert gas is any one of nitrogen, helium, neon and argon.
7. A method of preparing a polymer material for a loop network administration control apparatus according to any one of claims 1 to 6, comprising the steps of: and mixing, mixing and molding the components according to the parts by weight to obtain the polymer material for the looped network treatment control device.
8. The method for preparing a polymer material for a looped network management control apparatus according to claim 7, wherein the specific mixing conditions are: the temperature is 180-230 ℃, the rotating speed is 60-110 rpm, and the time is 0.5-2.5 hours; the specific conditions of the compression molding are as follows: the pressing pressure is 55-85MPa, the temperature is 115-125 ℃, and the pressing time is 9-15 seconds.
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| CN107286538A (en) * | 2017-08-03 | 2017-10-24 | 合肥欧仕嘉机电设备有限公司 | A kind of highly sensitive high temperature resistant thermistor composite material and preparation method thereof |
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