CN114539702A - 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, which are characterized by comprising the following steps ofThe composition comprises the following components in parts by weight: amino-terminated hyperbranched polysiloxane HPSi-NH25-8 parts of polymer, 40-50 parts of conductive filler, 35-45 parts of conductive filler, 3-5 parts of graphene fiber, 2-4 parts of nano boron fiber, 1-3 parts of coupling agent and 0.5-2.5 parts of antioxidant; the polymer is prepared by the free radical copolymerization of 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethylphenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione and glycidyl methacrylate. The polymer material for the looped network governance control device disclosed by the invention has the advantages of good ageing resistance, pressure resistance and flow resistance, good heat resistance and circulation stability, and excellent PCT (PCT) characteristics and strength.
Description
Technical Field
The invention relates to the technical field of thermistors, in particular to a polymer material for a looped network treatment control device and a preparation method thereof.
Background
With the development of power grids and the improvement of equipment technologies, the looped network management control device is widely used in the power grids. Because the looped network management control device is in long-term operation, temperature, humidity etc. are unusual, very easily lead to the potential safety hazard to destroy the safe and reliable operation of electric wire netting. Therefore, the temperature and humidity state and the fault state in the looped network management control device are effectively monitored for a long time, and the device is necessary to give an alarm in time and quickly manage and protect the abnormal conditions. In order to protect against over-current or over-temperature, polymer materials for looped network governance control devices are widely used.
The polymer material for the looped network governance control device which plays a role in overcurrent or overtemperature protection is a common thermistor material. The thermistor material is an electronic element with wide application, is widely applied to computers and external equipment thereof, mobile phones, battery packs, transformers, industrial control equipment, automobiles and other electronic products, and plays a role in overcurrent or overtemperature protection. The high molecular polymer thermistor material has the outstanding advantages of light weight, simple preparation process, low cost, unlimited shape and the like, and can be widely applied to industries as devices for overcurrent protection, constant-temperature automatic heating, temperature compensation, fire alarm and the like by gradually replacing barium titanate ceramic.
The polymer thermistor is usually prepared by blending conductive fillers such as carbon black, carbon fiber or metal particles and the like with certain polymer matrixes, and has a good Positive Temperature Coefficient (PTC) effect. However, the existing polymer thermistor product has poor stability and short service life, and the room temperature resistance value of the product is increased by more than 5 ohms after the product is impacted by external current for 10 times, namely the product cannot be used any more. The polymer thermistors on the market also have the defects of poor aging resistance, insufficient PCT characteristics and strength, low heat-resistant temperature, poor circulation stability and unsatisfactory pressure resistance and flow resistance.
Chinese invention patent CN102558638B provides a positive temperature coefficient material which is a product formed by 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 0.5-10 wt%, the content of the polymer is 5-15 wt%, the content of the nucleating agent is 0.5-10 wt%, the content of the lubricant is 0.5-3 wt%, the content of the conductive filler is 80-90 wt%, and the content of the flame retardant is 1-6 wt%; the additive is ethylene propylene diene monomer, 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 and pressure-resistant and flow-resistant performance. However, PCT characteristics and strength, heat resistance, and cycle stability thereof are to be further improved.
Therefore, the polymer material for the looped network governance control device, which has the advantages of good ageing resistance, pressure resistance and flow resistance, good heat resistance and circulation stability, and excellent PCT characteristics and strength, and the preparation method thereof are developed, meet the market demands, have wide market values, and have very important significance for promoting the development of the thermistor field.
Disclosure of Invention
The invention mainly aims to provide a polymer material for a looped network treatment control device, which has the advantages of good ageing resistance, pressure resistance and flow resistance, good heat resistance and circulation stability, and excellent PCT characteristics and strength, and a preparation method thereof.
In order to achieve the purpose, the invention provides a polymer material for a looped network treatment control device, which is characterized by comprising the following components in parts by weight: amino-terminated hyperbranched polysiloxane HPSi-NH25-8 parts of polymer, 40-50 parts of conductive filler, 35-45 parts of conductive filler, 3-5 parts of graphene fiber, 2-4 parts of nano boron fiber, 1-3 parts of coupling agent and 0.5-2.5 parts of antioxidant; the polymer is prepared from4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethylphenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione and glycidyl methacrylate are prepared by free radical copolymerization.
Preferably, the antioxidant is any one or more of an antioxidant 1010, a composite antioxidant B225 and an 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 meshes.
Preferably, the preparation method of the polymer comprises the following steps: adding 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethylphenyl) 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 at 65-75 ℃ under an inert gas atmosphere, cooling to room temperature, precipitating in water, washing the precipitated polymer for 3-6 times by using ethanol, and finally drying in a vacuum drying oven at 85-95 ℃ to constant weight.
Preferably, the mass ratio of the 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, the N- (4-cyano-3-trifluoromethylphenyl) methacrylamide, the 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-diketone, the glycidyl methacrylate, the initiator and the 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 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.
The amino-terminated hyperbranched polysiloxane HPSi-NH2Without particular requirement for the origin of (A), in one embodiment of the invention, the amino-terminated hyperbranched polysiloxane HPSi-NH2Is prepared according to the method of the embodiment I of the Chinese invention patent of CN 201910338290.3.
Another objective of the present invention is to provide a method for preparing a polymer material for a looped network governance control device, which is characterized by comprising the following steps: the polymer material for the looped network treatment control device is obtained by mixing, mixing and molding the components in parts by weight.
Preferably, the mixing, kneading and molding are mixing, kneading and molding process steps known in the art. For example, the specific mixing conditions in the present invention are: the temperature is 180 ℃ and 230 ℃, the rotating speed is 60-110 r/min, and the time is 0.5-2.5 hours; the specific conditions of the press forming 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 management control device is simple and easy to implement, easy to control conditions, high in preparation effect and finished product qualification rate, and suitable for industrial production.
(2) The polymer material for the looped network governance control device disclosed by the invention has the advantages that through the mutual matching and combined action of all the components, the prepared polymer material for the looped network governance control device has good ageing resistance, pressure resistance and flow resistance, good heat resistance and circulation stability, and excellent PCT (PCT) characteristics and strength.
(3) The invention discloses a polymer material for a looped network governance control device, wherein the polymer is prepared by carrying out free radical copolymerization on 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethylphenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-diketone and glycidyl methacrylate; the molecular chain of the polymer simultaneously contains trifluoroquinoline, cyano-trifluorophenyl, amido, indolinone and ester groups, and the structures are mutually matched and act together, so that the prepared material has good ageing resistance, performance stability and heat resistance under the multiple actions of electronic effect, steric hindrance effect and conjugation effect.
(4) The invention discloses a polymer material for a looped network treatment control device, namely amino-terminated hyperbranched polysiloxane HPSi-NH2The amino groups can chemically react with epoxy groups on polymer molecular chains in the material forming process to form a uniform and stable cross-linking structure, so that the heat-resistant stability of the product is effectively improved, and the current resistance, the voltage resistance and the cycling stability of the product are improved. The addition of the graphene fiber and the nano boron fiber can improve the mechanical property of the material under the synergistic effect with other components, and meanwhile, the excellent PCT characteristics and strength of the final product can be ensured.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The amino-terminated hyperbranched polysiloxane HPSi-NH2Is prepared according to the method of the embodiment I of the Chinese invention patent of CN 201910338290.3.
Example 1
The polymer material for the looped network treatment control device is characterized by comprising the following components in parts by weight: amino-terminated hyperbranched polysiloxane HPSi-NH25 parts of polymer, 40 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-trifluoromethylphenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione and glycidyl methacrylate through free radical copolymerization.
The antioxidant is an antioxidant 1010; the coupling agent is a silane coupling agent KH 550.
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-trifluoromethylphenyl) 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 hours at 65 ℃ under an inert gas atmosphere, cooling to room temperature, precipitating in water, washing the precipitated polymer for 3 times by using ethanol, and finally drying in a vacuum drying oven at 85 ℃ to constant weight.
The mass ratio of the 4-vinyl-2, 8-bis (trifluoromethyl) quinoline to the N- (4-cyano-3-trifluoromethylphenyl) methacrylamide to the 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione to the glycidyl methacrylate to the initiator to the high-boiling solvent is 1:3:0.8:1:0.06: 25; the initiator is azobisisobutyronitrile; the high boiling point solvent is dimethyl sulfoxide; the inert gas is nitrogen.
A preparation method of the polymer material for the looped network governance control device is characterized by comprising the following steps: the polymer material for the looped network treatment control device is obtained by mixing, mixing and molding the components in parts by weight.
The mixing, mixing and molding are the process steps of mixing, mixing and molding which are known in the field; the concrete mixing conditions are as follows: the temperature is 180 ℃, the rotating speed is 60 r/min, and the time is 0.5 hour; the specific conditions of the press forming 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 looped network treatment control device is characterized by comprising the following components in parts by weight: amino-terminated hyperbranched polysiloxane HPSi-NH26 parts of polymer, 43 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-trifluoromethylphenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione and glycidyl methacrylate are prepared by free radical copolymerization.
The antioxidant is a compound antioxidant B225; the coupling agent is a silane coupling agent KH 560; 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-trifluoromethylphenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-diketone, glycidyl methacrylate and an initiator into a high boiling point solvent, stirring and reacting for 4 hours at 67 ℃ under an inert gas atmosphere, cooling to room temperature, precipitating in water, washing the precipitated polymer for 4 times by using ethanol, and finally drying in a vacuum drying oven at 87 ℃ to constant weight.
The mass ratio of the 4-vinyl-2, 8-bis (trifluoromethyl) quinoline to the N- (4-cyano-3-trifluoromethylphenyl) methacrylamide to the 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione to the glycidyl methacrylate to the initiator to the high-boiling solvent is 1:3.5:0.9:1.3:0.07: 28; the initiator is azobisisoheptonitrile; the high boiling point solvent is N, N-dimethylformamide; the inert gas is helium.
A preparation method of the polymer material for the looped network governance control device is characterized by comprising the following steps: mixing, mixing and molding the components in parts by weight to obtain a polymer material for the looped network management control device; the mixing, mixing and molding are the process steps of mixing, mixing and molding which are known in the field; the concrete mixing conditions are as follows: the temperature is 195 ℃, the rotating speed is 80 r/min, and the time is 1 hour; the specific conditions of the press forming are as follows: the pressing pressure was 65MPa, the temperature was 118 ℃ and the pressing time was 11 seconds.
Example 3
Loop network governance controlThe polymer material for the device is characterized by comprising the following components in parts by weight: amino-terminated hyperbranched polysiloxane HPSi-NH26.5 parts of polymer, 45 parts of conductive filler, 40 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 by the free radical copolymerization of 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethylphenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione and glycidyl methacrylate.
The antioxidant is an antioxidant 1076; the coupling agent is a silane coupling agent KH 570; 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 micrometers, 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-trifluoromethylphenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-diketone, glycidyl methacrylate and an initiator into a high boiling point solvent, stirring and reacting for 4.5 hours at 70 ℃ under an inert gas atmosphere, cooling to room temperature, precipitating in water, washing the precipitated polymer for 5 times by using ethanol, and finally drying in a vacuum drying oven at 90 ℃ to constant weight.
The mass ratio of the 4-vinyl-2, 8-bis (trifluoromethyl) quinoline to the N- (4-cyano-3-trifluoromethylphenyl) methacrylamide to the 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione to the glycidyl methacrylate to the initiator to the high-boiling solvent is 1:4:1:1.5:0.075: 33; the initiator is azobisisobutyronitrile; the high boiling point solvent is N-methyl pyrrolidone; the inert gas is neon.
A preparation method of the polymer material for the looped network governance control device is characterized by comprising the following steps: mixing, mixing and molding the components in parts by weight to obtain a polymer material for the looped network management control device; the mixing, mixing and molding are the process steps of mixing, mixing and molding which are known in the field; the concrete mixing conditions are as follows: the temperature is 210 ℃, the rotating speed is 90 r/min, and the time is 1.5 hours; the specific conditions of the press forming are as follows: the pressing pressure is 75MPa, the temperature is 120 ℃, and the pressing time is 13 seconds.
Example 4
The polymer material for the looped network treatment control device is characterized by comprising the following components in parts by weight: amino-terminated hyperbranched polysiloxane HPSi-NH27.5 parts of polymer, 48 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 by the free radical copolymerization of 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethylphenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione and glycidyl methacrylate.
The antioxidant is a mixture formed by mixing an antioxidant 1010, a composite antioxidant B225 and an antioxidant 1076 according to the 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 the 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, a carbon nano tube, 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-trifluoromethylphenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-diketone, glycidyl methacrylate and an initiator into a high boiling point solvent, stirring and reacting for 5.5 hours at 73 ℃ under an inert gas atmosphere, cooling to room temperature, precipitating in water, washing the precipitated polymer for 6 times by using ethanol, and finally drying in a vacuum drying oven at 93 ℃ to constant weight.
The mass ratio of the 4-vinyl-2, 8-bis (trifluoromethyl) quinoline to the N- (4-cyano-3-trifluoromethylphenyl) methacrylamide to the 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione to the glycidyl methacrylate to the initiator to the high-boiling solvent is 1:4.5:1.1:1.8:0.085: 37; the initiator is a mixture formed by mixing azodiisobutyronitrile and azodiisoheptonitrile according to the 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 the mass ratio of 1:2: 3; the inert gas is argon.
A preparation method of the polymer material for the looped network governance control device is characterized by comprising the following steps: mixing, mixing and molding the components in parts by weight to obtain a polymer material for the looped network management control device; the mixing, mixing and molding are the process steps of mixing, mixing and molding which are known in the field; the concrete mixing conditions are as follows: the temperature is 220 ℃, the rotating speed is 100 r/min, and the time is 2.2 hours; the specific conditions of the press forming 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 looped network treatment control device is characterized by comprising the following components in parts by weight: amino-terminated hyperbranched polysiloxane HPSi-NH28 parts of polymer, 50 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 by the free radical copolymerization of 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethylphenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione and glycidyl methacrylate.
The antioxidant is an antioxidant 1010; the coupling agent is a silane coupling agent KH 550; 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 micrometers, 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-trifluoromethylphenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-diketone, glycidyl methacrylate and an initiator into a high boiling point solvent, stirring and reacting for 6 hours at 75 ℃ under an inert gas atmosphere, cooling to room temperature, precipitating in water, washing the precipitated polymer for 6 times by using ethanol, and finally drying in a vacuum drying oven at 95 ℃ to constant weight.
The mass ratio of the 4-vinyl-2, 8-bis (trifluoromethyl) quinoline to the N- (4-cyano-3-trifluoromethylphenyl) methacrylamide to the 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione to the glycidyl methacrylate to the initiator to the high-boiling solvent is 1:5:1.2:2:0.09: 40; the initiator is azobisisoheptonitrile; the high boiling point solvent is N, N-dimethylformamide; the inert gas is nitrogen.
A preparation method of the polymer material for the looped network governance control device is characterized by comprising the following steps: mixing, mixing and molding the components in parts by weight to obtain a polymer material for the looped network management control device; the mixing, kneading and molding are the mixing, kneading and molding process steps known in the art. The concrete mixing conditions are as follows: the temperature is 230 ℃, the rotating speed is 110 r/min, and the time is 2.5 hours; the specific conditions of the press forming are as follows: the pressing pressure is 85MPa, the temperature is 125 ℃, and the pressing time is 15 seconds.
Comparative example 1
The invention provides a polymer material for a looped network governance control device, which is similar to example 1, except that no amino-terminated hyperbranched polysiloxane HPSi-NH is added2。
Comparative example 2
The invention provides a polymer material for a looped network governance control device, which is similar to example 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 governance control device 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 material for the looped network governance control device manufactured in each embodiment of the invention, the polymer materials for the looped network governance control device manufactured in the embodiments 1 to 5 and the comparative examples 1 to 3 are subjected to related performance tests, the test results are shown in table 1, and the test methods are shown in the test method of CN 102558638B; during a pressure resistance test, applying Umax to two ends of a polymer material for the ring network management control device for 2 hours, wherein PTC is qualified if the PTC is not burnt and cracked, or else, the PTC is unqualified; and in the current resistance test, Imax is added at two ends of the polymer material for the looped network treatment control device, and the looped network treatment control device is subjected to circulation for 6s and 60s for disconnection without burning or cracking, namely the looped network treatment control device is qualified, or the looped network treatment control device is unqualified.
TABLE 1
As can be seen from the data in Table 1, the polymer material for the looped network governance control device, which is prepared by the embodiment of the invention, has excellent anti-aging performance, voltage resistance and current resistance, and the PTC strength is higher, which is a result of synergistic effect of all the components.
The foregoing shows and describes the general principles, essential 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, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The polymer material for the looped network treatment control device is characterized by comprising the following components in parts by weight: amino-terminated hyperbranched polysiloxane HPSi-NH25-8 parts of polymer, 40-50 parts of conductive filler, 35-45 parts of conductive filler, 3-5 parts of graphene fiber, 2-4 parts of nano boron fiber, 1-3 parts of coupling agent and 0.5-2.5 parts of antioxidant; the polymer is prepared from 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethylphenyl) methacrylamide, 2- (2-The (vinyloxy) ethyl) isoindoline-1, 3-diketone and glycidyl methacrylate are prepared by free radical copolymerization.
2. The polymer material for the looped network governance control device according to claim 1, wherein the antioxidant is any one or more of antioxidant 1010, compound antioxidant B225, antioxidant 1076.
3. The polymer material for the looped network governance 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 the looped network governance control device 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 μm, and the length-diameter ratio is (20-30): 1.
5. The polymer material for the looped network governance control device according to claim 1, wherein the conductive filler is at least one of acetylene black, carbon nanotubes, graphene, nickel powder, silver powder; the particle size of the conductive filler is 800-1200 meshes.
6. The polymer material for the looped network governance control device according to claim 1, wherein the preparation method of the polymer comprises the following steps: adding 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethylphenyl) 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 at 65-75 ℃ under an inert gas atmosphere, cooling to room temperature, precipitating in water, washing the precipitated polymer for 3-6 times by using ethanol, and finally drying in a vacuum drying oven at 85-95 ℃ to constant weight.
7. The polymer material for looped network governance control devices according to claim 6, wherein the mass ratio of 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, N- (4-cyano-3-trifluoromethylphenyl) methacrylamide, 2- (2- (vinyloxy) ethyl) isoindoline-1, 3-dione, glycidyl methacrylate, initiator and high boiling point solvent is 1 (3-5) (0.8-1.2) (1-2) (0.06-0.09): 25-40.
8. The polymer material for the looped network governance control device according to claim 6, 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.
9. A method for preparing a polymer material for a looped network governance control device according to any one of claims 1 to 8, comprising the steps of: the polymer material for the looped network treatment control device is obtained by mixing, mixing and molding the components in parts by weight.
10. The method for preparing a polymer material for a looped network governance control device according to claim 9, wherein the specific mixing conditions are as follows: the temperature is 180 ℃ and 230 ℃, the rotating speed is 60-110 r/min, 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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