CN114874609A - High-damping intelligent vibration damping sheet material and preparation method thereof - Google Patents

High-damping intelligent vibration damping sheet material and preparation method thereof Download PDF

Info

Publication number
CN114874609A
CN114874609A CN202210214570.5A CN202210214570A CN114874609A CN 114874609 A CN114874609 A CN 114874609A CN 202210214570 A CN202210214570 A CN 202210214570A CN 114874609 A CN114874609 A CN 114874609A
Authority
CN
China
Prior art keywords
damping
parts
sheet material
mxenes
piezoelectric
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202210214570.5A
Other languages
Chinese (zh)
Other versions
CN114874609B (en
Inventor
陈玉洁
陈文正
刘河洲
李华
余启立
范群福
郑栖潭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maanshan Economic And Technological Development Zone Construction Investment Co ltd
Shanghai Jiaotong University
Original Assignee
Maanshan Economic And Technological Development Zone Construction Investment Co ltd
Shanghai Jiaotong University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maanshan Economic And Technological Development Zone Construction Investment Co ltd, Shanghai Jiaotong University filed Critical Maanshan Economic And Technological Development Zone Construction Investment Co ltd
Priority to CN202210214570.5A priority Critical patent/CN114874609B/en
Publication of CN114874609A publication Critical patent/CN114874609A/en
Priority to NL2034116A priority patent/NL2034116A/en
Application granted granted Critical
Publication of CN114874609B publication Critical patent/CN114874609B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18Manufacture of films or sheets
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0085Use of fibrous compounding ingredients
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30Low-molecular-weight compounds
    • C08G18/32Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3203Polyhydroxy compounds
    • C08G18/3206Polyhydroxy compounds aliphatic
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/48Polyethers
    • C08G18/4854Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/65Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6666Compounds of group C08G18/48 or C08G18/52
    • C08G18/667Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
    • C08G18/6674Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
    • C08G18/6677Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203 having at least three hydroxy groups
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72Polyisocyanates or polyisothiocyanates
    • C08G18/74Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C08G18/7664Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
    • C08G18/7671Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0066Use of inorganic compounding ingredients
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0095Mixtures of at least two compounding ingredients belonging to different one-dot groups
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04Polyurethanes
    • C08L75/08Polyurethanes from polyethers
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04Polyurethanes
    • C09D175/08Polyurethanes from polyethers
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04Polyurethanes
    • C09D175/14Polyurethanes having carbon-to-carbon unsaturated bonds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2101/00Manufacture of cellular products
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2375/00Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04Polyurethanes
    • C08J2375/08Polyurethanes from polyethers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2433/00Characterised 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
    • C08J2433/04Characterised 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 esters
    • C08J2433/06Characterised 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 esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C08J2433/10Homopolymers or copolymers of methacrylic acid esters
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/002Physical properties
    • C08K2201/005Additives being defined by their particle size in general
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/10Metal compounds
    • C08K3/14Carbides
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24Acids; Salts thereof
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00Fastening rails on sleepers, or the like
    • E01B9/68Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
    • E01B9/681Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair characterised by the material

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Inorganic Chemistry (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention relates to a high-damping intelligent vibration damping sheet material and a preparation method thereof, and the high-damping intelligent vibration damping sheet material comprises the following components in percentage by mass: 30-90 parts of polytetramethylene glycol (PTMEG), 7.5-30 parts of polyhydric alcohol, 0.5-2.5 parts of isocyanate, 0-60 parts of Butyl Methacrylate (BMA), 0-60 parts of Methyl Methacrylate (MMA), 0-1 part of initiator, 20-40 parts of foam stabilizer, 0.05-0.5 part of MAX phase ceramic and 10-20 parts of piezoelectric ceramic. The preparation method comprises the following steps: self-assembling piezoelectric ceramics and Mxenes; mixing polytetramethylene glycol, polyol, isocyanate, BMA, MMA and an initiator to prepare a polyurethane IPN matrix; and then pre-polymerizing the self-assembly mixture of the polyurethane IPN matrix and the piezoelectric ceramics/Mxenes and a foam stabilizer, and then blending, foaming, molding and polarizing to obtain the high-damping intelligent damping sheet material of the polyurethane IPN/piezoelectric ceramics/Mxenes. Compared with the prior art, the polyurethane IPN/piezoelectric ceramic/Mxenes high-damping intelligent vibration damping sheet material has the characteristic of high damping, and the application of the assembled ballastless track in the environment with vibration damping requirements is expanded.

Description

High-damping intelligent vibration damping sheet material and preparation method thereof
Technical Field
The invention belongs to the field of polymer composite materials, and particularly relates to a material preparation method of an assembly type ballastless track high-damping intelligent vibration damping pad accessory.
Background
In railway and track traffic, the ballast track and the ballastless track can be judged according to whether a gravel ballast bed exists on a track base or not. The ballastless track adopts concrete and asphalt as a track bed foundation to transfer dynamic and static loads of a train during running. The ballastless track has the advantages that the ballastless track does not have, and most notably, the ballastless track has good long-term stability so as to be in service for a long time when the train runs at a high speed. However, in general technology, the construction and maintenance of the ballastless track are not automated, so that extra cost is required for production and maintenance, and the defects left during construction can cause hidden troubles for the service life, so that the defects need to be compensated at high cost.
With the development of the times, the mileage of high-speed rail transit and the mileage of urban rail transit are increased year by year, and accordingly, the maintenance requirement of ballastless tracks and the requirement of laying new tracks are greatly improved. However, according to recent literature reports, in order to adapt to more convenient urban rail transit construction, a prefabricated assembly plate type ballastless track system suitable for urban rail transit is introduced. The system has the advantages of higher prefabrication precision, better quality, high efficiency of mechanized construction, on-site track laying, short construction period and the like. Different from the process of a cast-in-place track bed, the assembly and the upgrade of the vibration damping workpiece can be quickly realized according to the vibration damping requirement when the track is prefabricated, and the application flexibility of the vibration damping material in the track traffic application is improved. In a novel assembly type ballastless track structure, a damping pad is designed between a self-compacting concrete cushion and a base, the thickness of the damping layer is 30mm, polyurethane foam is generally used as a material, and the damping layer is made of a rubber material with a conical protruding structure.
Under the background of the development of rail transit engineering and science and the increasing requirements for quality of life of people, the demand for reducing noise generated by high-speed operation of rail transit tools is gradually increased. On one hand, in long-distance railway traffic, when the ballastless track is used, the running speed of a train is higher, and meanwhile, noise caused by the ballastless track causes interference to the ecological environment beside the track and the life of rural residents to a certain extent; on the other hand, in short-distance urban rail transit, due to the fact that the track laying environment is complex, the urban environment is more sensitive to noise indexes, and the requirements of construction of urban rail transit on vibration reduction and noise reduction are higher. Meanwhile, the fatigue failure of the ballastless track not only causes continuous stress caused by the traveling of most of driving trains, but also causes cyclic stress caused by mechanical vibration in the running process of the trains, the cyclic stress can accelerate the generation of fatigue cracks, and the strong vibration can also cause the risk of loosening of assembly components, so that the cost of railway maintenance is increased, and the service life of the track is shortened.
Therefore, providing an intelligent vibration damping material with high damping for a corresponding vibration damping pad fitting under a novel assembly type ballastless track technology is one of the technical problems to be solved urgently by technical personnel in the corresponding field.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a high-damping intelligent vibration damping sheet material and a preparation method thereof.
The purpose of the invention can be realized by the following technical scheme: a high-damping intelligent vibration damping sheet material comprises the following components in percentage by mass:
30-90 parts of polytetramethylene glycol (PTMEG), 7.5-30 parts of polyhydric alcohol, 0.5-2.5 parts of isocyanate, 0-60 parts of Butyl Methacrylate (BMA), 0-60 parts of Methyl Methacrylate (MMA), 0.2-1 part of initiator, 20-40 parts of foam stabilizer, 0.05-0.5 part of MAX phase ceramic and 10-20 parts of piezoelectric ceramic.
Further preferably, the high-damping intelligent vibration damping sheet material comprises the following components in percentage by mass: 50-80 parts of polytetramethylene glycol (PTMEG), 15-25 parts of polyhydric alcohol, 1-2 parts of isocyanate, 20-40 parts of Butyl Methacrylate (BMA), 20-40 parts of Methyl Methacrylate (MMA), 0.2-0.6 part of initiator, 30-35 parts of foam stabilizer, 0.1-0.2 part of MAX phase ceramic and 15-18 parts of piezoelectric ceramic.
Further, the piezoelectric ceramic is high lead titanate ceramic (PZT) with the grain size of 300nm-1000 nm;
further, the initiator is an azo initiator.
Further, the MAX phase ceramic is Ti 2 AlC ceramic particles.
The invention further provides a preparation method of the high-damping intelligent vibration damping sheet material, wherein Mxenes are used as a conductive phase, ceramic particles are used as a piezoelectric phase, polyurethane interpenetrating cross-linked network foam is used as a polyurethane IPN matrix, and the polyurethane IPN/piezoelectric ceramic/Mxenes high-damping intelligent vibration damping sheet material is obtained by self-assembling the Mxenes on the piezoelectric ceramic and then compounding the piezoelectric ceramic and the matrix.
Further, the mxexes self-assemble on piezoelectric ceramics as follows:
(1) preparation of mxeenes 2D sheets: adding MAX phase ceramic into NH 4 F and H 2 SO 4 Stirring for 20-30 h, and thenWashing with deionized water, centrifuging, and removing supernatant to obtain washed mixed solution with pH of 5-7;
(2) stripping mxeenes 2D slices: carrying out ultrasonic treatment on the mixed solution obtained in the step (1) for 1-3 h, carrying out centrifugal treatment for 10-30 min after the ultrasonic treatment is finished, taking the upper-layer turbid solution as a stripped Mxenes2D sheet layer aqueous solution, and sealing and storing;
(3) mxeenes self-assembly: and (3) adding deionized water into the piezoelectric ceramic particles, performing ultrasonic dispersion for 30-6 min, adding the Mxenes2D sheet layer aqueous solution stripped in the step (2), stirring the mixed solution for 2-10 h to complete self-assembly, and sealing and storing to obtain the piezoelectric ceramic/Mxenes assembly suspension.
Further, NH in step (1) 4 F and H 2 SO 4 The molar ratio of (A) to (B) is 1-3: 10-24; the centrifugation speed is 8000-10000 rad/min;
the speed of centrifugation in the step (2) is 2000-4000 rad/min;
the mass ratio of the piezoelectric ceramics to the deionized water to the Mxenes2D lamellar water solution in the step (3) is as follows: 10-20: 20-50:10-20.
Further, the preparation method of the polyurethane IPN matrix comprises the following steps:
a) primary blending: weighing the polytetramethylene glycol, the polyol and the isocyanate according to the mixture ratio, and blending for 20-30 min;
b) and (3) secondary blending: weighing butyl methacrylate and methyl methacrylate according to the proportion, and blending with the mixed solution in the step a) for 20-30 min;
c) three times of IPN blending: adding an initiator into the blending liquid obtained in the step b), blending for 10min-20min, sealing and storing to obtain the polyurethane IPN matrix solution.
Further, the high-damping intelligent vibration damping sheet material is prepared by the following method:
i) pre-polymerization: keeping the temperature of the polyurethane IPN matrix solution at 70-80 ℃ for 4-8 h to complete prepolymerization;
ii) four compound blends: mixing the piezoelectric ceramic/Mxenes assembly suspension and the pre-polymerized blending liquid in the step i) in a ratio of 1: 100-20: 100, adding 20-40 parts by mass of foam stabilizer CGY-3, stirring and foaming, pouring into a mold, and closing the mold;
iii) final polymerization: after die assembly, keeping the temperature for 10 to 14 hours at the temperature of between 120 and 150 ℃;
iv) cooling: opening the die, and cooling the damping sheet material for 1-2 h at room temperature;
v) polarization: and (4) carrying out polarization treatment on the piezoelectric damping composite material obtained in the step iv) to finally obtain the polyurethane IPN/piezoelectric ceramic/Mxenes high-damping intelligent damping sheet material.
The polarization treatment comprises the following steps: copper electrodes are pasted on two sides of the surface of the piezoelectric damping composite material, and polarization is carried out for 30min at the temperature of 60 ℃ in the environment of silicone oil at the voltage of 3kv/mm-5 kv/mm.
Compared with the prior art, the invention has the following beneficial effects:
in the polymer-based vibration damping composite material, the piezoelectric damping material has the unique advantages of an intelligent vibration damping material, and firstly, the piezoelectric damping material consists of a polymer matrix, piezoelectric ceramics and a conductive phase, the piezoelectric ceramics particles generate electric charges on the lower surface of a vibration load, and the conductive phase in the composite material transmits electrons to form a conductive path. Meanwhile, in the application of the ballastless track vibration damping pad, the piezoelectric composite material can be used as a sensor to detect incoming vibration, and the defects and fatigue degree of adjacent components can be diagnosed according to the change of the vibration, so that the intellectualization of the vibration damping material is realized in a real sense, and the maintenance and detection cost of the ballastless track is reduced to a certain extent.
Mxenes as a 2D material has the characteristics of excellent electromagnetic property, high specific surface area, adsorbability and the like, and can be used as a filler to prepare a high-performance intelligent polymer-based composite material, so that the aspects of high polymer, such as electrical conductivity, thermal conductivity, mechanical property, flame retardance and the like, are improved. Meanwhile, because a large number of active ends exist in the process that MAX is etched by HF, the interface of Mxenes and a polymer matrix is well combined, and the layer space is adjusted, so that favorable conditions are provided for preparing a polymer/Mxenes composite material.
According to the invention, Mxenes are used as a conductive phase, PZT ceramic particles are used as a piezoelectric phase, polyurethane interpenetrating cross-linked network foam is used as an intelligent vibration-damping piezoelectric damping composite material of a matrix, and through self-assembly of Mxenes on the piezoelectric ceramic, the surface electron transmission and specific surface area of the piezoelectric ceramic after loading are improved, meanwhile, the combination interface of the particles and a polymer matrix is improved, particle agglomeration is prevented, and the distribution of the piezoelectric phase in the matrix is optimized, so that the overall damping performance is improved, and the application of the assembled ballastless track in vibration-damping-demand environment with vibration-damping pads is expanded.
Drawings
FIG. 1 is a flow chart of the self-assembly of Mxenes on piezoelectric ceramics according to the present invention;
FIG. 2 is a flow chart for manufacturing the polyurethane IPN/piezoelectric ceramic/Mxenes high damping intelligent damping sheet material of the present invention;
FIG. 3 shows the loss factor of the high damping intelligent damping sheet material of polyurethane IPN/piezoelectric ceramics/Mxenes;
FIG. 4 is the storage modulus of polyurethane IPN/piezoelectric ceramic/Mxenes high damping intelligent damping sheet material;
FIG. 5 shows the loss modulus of the polyurethane IPN/piezoelectric ceramic/Mxenes high damping intelligent damping sheet material.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
It should be noted that the embodiments of the present invention relating to the preparation of IPN substrates and the features of the embodiments may be combined with each other without conflict. The present invention is further illustrated by the following examples, the loss factor of the polyurethane IPN/piezoelectric ceramic/mxexens high damping intelligent damping sheet material of the obtained example is shown in fig. 3, the storage modulus of the polyurethane IPN/piezoelectric ceramic/mxexens high damping intelligent damping sheet material of the obtained example is shown in fig. 4, the loss modulus of the polyurethane IPN/piezoelectric ceramic/mxexens high damping intelligent damping sheet material of the obtained example is shown in fig. 5, and the loss factor at the characteristic temperature of the polyurethane IPN/piezoelectric ceramic/mxexens high damping intelligent damping sheet material of the obtained example is compared with table 1. The embodiment is implemented on the premise of the technical scheme of the invention, and a detailed implementation method and a specific operation process are given, but the protection scope of the invention is not limited to the following implementation examples.
The invention provides a preparation method of a polyurethane IPN/piezoelectric ceramic/Mxenes high-damping intelligent vibration damping sheet material, which comprises the following steps:
firstly, the piezoelectric ceramics/Mxenes self-assembly is shown in figure 1:
(1) preparation of mxeenes 2D sheets: adding MAX phase (Ti) according to the proportion 2 AlC) ceramic, 0.5mol-1.5mol of NH is required to be added 4 F with 5mol to 12mol of H 2 SO 4 In which HF (hydrofluoric acid) and Ti are in situ 2 Molar ratio of AlC 9: stirring for 20-30 h, then washing with deionized water, centrifuging at 8000-10000rad/min, and pouring out supernatant until the pH value of the mixed solution is 5-7;
(2) stripping mxeenes 2D slices: subjecting the mixed solution obtained in the step (1) to ultrasonic treatment for 1-3 h, subjecting the mixed solution to centrifugal treatment at 4000rad/min for 10-30 min after the ultrasonic treatment is finished, taking the upper-layer turbid solution as the stripped Mxenes2D sheet aqueous solution, and sealing and storing;
(3) mxeenes self-assembly: adding 10-20 parts by mass of piezoelectric ceramic (PZT) particles according to a ratio, requiring adding 20-50 parts by mass of deionized water for ultrasonic dispersion for 30-6 min, simultaneously requiring adding 10-20 parts by mass of the aqueous solution of the Mxenes2D sheet layer stripped in the step (2), finally requiring stirring the mixed solution for 2-10 h to complete self-assembly, and sealing and storing.
Secondly, preparing a polyurethane IPN matrix as shown in figure 2
(4) Primary blending: weighing the polytetramethylene glycol, the polyol and the isocyanate according to the proportion, and blending for 20-30 min;
(5) and (3) secondary blending: weighing butyl methacrylate and methyl methacrylate according to the proportion, and blending with the blending liquid in the step (4) for 20-30 min;
(6) three times of IPN blending: adding the liquid blended in the step (5) into an initiator, blending for 10min-20min, and sealing and storing.
Preparation of polyurethane IPN/piezoelectric ceramic/Mxenes high-damping intelligent vibration damping sheet material
(7) Pre-polymerization: preserving the heat of the blending liquid obtained in the step (6) at 70-80 ℃ for 4-8 h to complete prepolymerization;
(8) four times of composite blending: and (3) mixing the suspension liquid self-assembled in the step (3) and the pre-polymerized blending liquid in the step (7) in a ratio of 1: 100-20: 100, adding 20-40 parts by mass of foam stabilizer CGY-3, stirring and foaming, pouring into a mold, and closing the mold;
(9) final polymerization: keeping the temperature for 10-14 h at 120-150 ℃ after die assembly;
(10) and (3) cooling: cooling the damping sheet material for 1-2 h at room temperature after the die is opened;
(11) polarization: and (3) pasting copper electrodes on two sides of the surface of the piezoelectric damping composite material obtained in the step (10), and polarizing for 30min at the temperature of 60 ℃ in the environment of silicone oil at the voltage of 3kv/mm-5 kv/mm. Finally obtaining the polyurethane IPN/piezoelectric ceramic/Mxenes high damping intelligent damping sheet material.
Specific examples are as follows, and in the following examples, the components are used in amounts of parts by weight unless otherwise specified.
Comparative example 1
1) Weighing 20g of PZT ceramic particles, adding 50g of deionized water, performing ultrasonic dispersion for 30min to obtain a suspension, and sealing for later use.
2) Weighing 41g of polytetramethylene glycol (PTMEG), 7.5g of glycerol, 0.5g of diphenylmethane-4, 4' -diisocyanate (MDI), PTMEG and glycerol monomer; heating diphenylmethane-4, 4' -diisocyanate (MDI) monomer to 60 ℃ until the monomer is melted into colorless transparent liquid, and blending the three monomers to obtain PU for later use.
3) Weighing Methyl Methacrylate (MMA) monomer, Butyl Methacrylate (BMA) monomer and Polyurethane (PU) in the step 2) according to the mass ratio of PU to BMA to MMA to be 1 to 2 to 1, wherein 25g of PU, 50g of BMA and 25g of MMA. MMA and BMA monomers are blended, 0.15g of Azobenzene (AIBN) is required to be added as an initiator, and the mixture is heated in an oil bath at the temperature of 60 ℃ until the monomer mixture presents viscous oily liquid for standby.
4) Preserving the temperature of the blend in the step 3) at 70-80 ℃ for more than 4h to complete primary polymerization, and then adding the suspension in the step 1), wherein the mass ratio of the suspension to the primary polymer is 20: 100, adding 35g of foam stabilizer CGY-3, stirring and foaming, pouring into a mold, closing the mold and putting into an oven.
5) Keeping the temperature at 120-140 ℃ for 14h to finish final polymerization, and cooling at room temperature for 2h after opening the mold.
6) Attaching copper electrodes to two sides of the material obtained in the step 5), and polarizing for 30min at 60 ℃ in a silicone oil environment by a 4kv/mm polarization system to obtain a comparative example material 1.
Example 1
A preparation method of a high-damping intelligent vibration damping sheet material comprises the following steps:
1) weighing 0.5g Ti 2 Adding 1mol NH4F and 9mol concentrated sulfuric acid into AlC ceramic particles, and stirring in a plastic beaker in a ventilated environment for 24 hours; the mixture was then washed with deionized water, centrifuged at 10000rad/min for 15min, the supernatant decanted and fresh deionized water added. Six centrifugation operations were repeated in this manner.
2) Further, the washed mixture was sonicated for 1h and then the Mxenes2D sheet was peeled off, followed by centrifugation at 3500rad/min for 30min and supernatant removal to give an aqueous solution of the Mxenes2D sheet.
3) Weighing 20g of ceramic Particles (PZT), adding 50 parts of deionized water, performing ultrasonic dispersion for 30min to obtain a suspension, adding 10g of the aqueous solution of the Mxenes2D sheet layer obtained in the step 2), stirring for 10h to realize self-assembly, obtaining a mixed suspension after the self-assembly, and sealing for later use.
4) Weighing 41g of polytetramethylene glycol (PTMEG), 7.5g of glycerol, 0.5g of diphenylmethane-4, 4' -diisocyanate (MDI), PTMEG and glycerol monomer; heating diphenylmethane-4, 4' -diisocyanate (MDI) monomer to 60 ℃ until the monomer is melted into colorless transparent liquid, and blending the three monomers to obtain PU for later use.
5) Weighing Methyl Methacrylate (MMA) monomer, Butyl Methacrylate (BMA) monomer and Polyurethane (PU) in the step 4) according to the mass ratio of PU to BMA to MMA to be 1 to 2 to 1, wherein 25g of PU, 50g of BMA and 25g of MMA. MMA and BMA monomers are blended, 0.15g of Azobenzene (AIBN) is required to be added as an initiator, and the mixture is heated in an oil bath at the temperature of 60 ℃ until the monomer mixture presents viscous oily liquid for standby.
6) Preserving the temperature of the blend in the step 5) for more than 4 hours at 70-80 ℃ to complete primary polymerization, and then adding the suspension in the step 3), wherein the mass ratio of the suspension to the primary polymer is 20: 100, adding 35g of foam stabilizer CGY-3, stirring and foaming, pouring into a mold, closing the mold and putting into an oven.
7) Keeping the temperature at 120-140 ℃ for 14h to finish final polymerization, and cooling at room temperature for 2h after opening the mold.
8) Copper electrodes are attached to two sides of the material obtained in the step 5), and polarization is carried out for 30min at 60 ℃ in a silicon oil environment by a 4kv/mm polarization system, so as to obtain the material 1 of the embodiment.
Example 2
A preparation method of a high-damping intelligent vibration damping sheet material comprises the following steps:
1) weighing 0.5g of Ti2AlC ceramic particles, adding 1mol of NH4F and 9mol of concentrated sulfuric acid, and stirring in a plastic beaker in a ventilated environment for 24 hours; the mixture was then washed with deionized water, centrifuged at 10000rad/min for 15min, the supernatant decanted and fresh deionized water added. Six centrifugation operations were repeated in this manner.
2) Further, the washed mixture was sonicated for 1h and then the Mxenes2D sheet was peeled off, followed by centrifugation at 3500rad/min for 30min and supernatant removal to give an aqueous solution of the Mxenes2D sheet.
3) Weighing 20g of ceramic particles, adding 50g of deionized water, performing ultrasonic dispersion for 30min to obtain a suspension, adding 15g of the aqueous solution of the Mxenes2D sheet layer obtained in the step 2), stirring for 10h to realize self-assembly, obtaining a mixed suspension after the self-assembly, and sealing for later use.
4) Weighing 41g of polytetramethylene glycol (PTMEG), 7.5g of glycerol, 0.5g of diphenylmethane-4, 4' -diisocyanate (MDI), PTMEG and glycerol monomer; diphenylmethane-4, 4' -diisocyanate (MDI) monomer was heated to 60 ℃ until it melted to a colorless transparent liquid. The three monomers are blended for use.
5) Weighing Methyl Methacrylate (MMA) monomer, Butyl Methacrylate (BMA) monomer and Polyurethane (PU) in the step 4) according to the mass ratio of PU to BMA to MMA to be 1 to 2 to 1, wherein 25g of PU, 50g of BMA and 25g of MMA. MMA and BMA monomers are blended, 0.15g of Azobenzene (AIBN) is required to be added as an initiator, and the mixture is heated in an oil bath at the temperature of 60 ℃ until the monomer mixture presents viscous oily liquid for standby.
6) Preserving the temperature of the blend in the step 5) for more than 4 hours at 70-80 ℃ to complete primary polymerization, and then adding the suspension in the step 3), wherein the mass ratio of the suspension to the primary polymer is 20: 100, adding 35g of foam stabilizer CGY-3, stirring and foaming, pouring into a mold, closing the mold and putting into an oven.
7) Keeping the temperature at 120-140 ℃ for 14h to finish final polymerization, and cooling at room temperature for 2h after opening the mold.
8) Copper electrodes are attached to two sides of the material obtained in the step 5), and polarization is carried out for 30min at 60 ℃ in a silicon oil environment by a 4kv/mm polarization system, so as to obtain an example material 2.
Example 3
1) Weighing 0.5g of Ti2AlC ceramic particles, adding 1mol of NH4F and 9mol of concentrated sulfuric acid, and stirring for 24 hours in a plastic beaker in a ventilated environment; the mixture was then washed with deionized water, centrifuged at 10000rad/min for 15min, the supernatant was decanted and fresh deionized water was added. Six centrifugation operations were repeated in this manner.
2) The cleaned mixed solution is subjected to ultrasonic treatment for 1h, then Mxenes2D lamella is peeled off, and then the mixed solution is centrifuged at 3500rad/min for 30min, and the supernatant is removed to obtain an Mxenes2D lamella aqueous solution.
3) Weighing 20g of ceramic particles, adding 50g of deionized water, performing ultrasonic dispersion for 30min to obtain a suspension, adding 20g of the aqueous solution of the Mxenes2D sheet layer obtained in the step 2), stirring for 10h to realize self-assembly, obtaining a mixed suspension after the self-assembly, and sealing for later use.
4) Weighing 41g of polytetramethylene glycol (PTMEG), 7.5g of glycerol, 0.5g of diphenylmethane-4, 4' -diisocyanate (MDI), PTMEG and glycerol monomer; diphenylmethane-4, 4' -diisocyanate (MDI) monomer was heated to 60 ℃ until it melted to a colorless transparent liquid. The three monomers are blended for use.
5) Weighing Methyl Methacrylate (MMA) monomer, Butyl Methacrylate (BMA) monomer and Polyurethane (PU) in the step 4) according to the mass ratio of PU to BMA to MMA to be 1 to 2 to 1, wherein 25g of PU, 50g of BMA and 25g of MMA. MMA and BMA monomers are blended, 0.15g of Azobenzene (AIBN) is required to be added as an initiator, and the mixture is heated in an oil bath at the temperature of 60 ℃ until the monomer mixture presents viscous oily liquid for standby.
6) Preserving the temperature of the blend in the step 5) for more than 4 hours at 70-80 ℃ to complete primary polymerization, and then adding the suspension in the step 3), wherein the mass ratio of the suspension to the primary polymer is 20: 100, adding 35g of foam stabilizer CGY-3, stirring and foaming, pouring into a mold, closing the mold and putting into an oven.
7) Keeping the temperature at 120-140 ℃ for 14h to finish final polymerization, and cooling at room temperature for 2h after opening the mold.
8) Attaching copper electrodes to two sides of the material obtained in the step 5), and polarizing for 30min at 60 ℃ in a 4kv/mm polarization system to obtain example material 3
The materials obtained in the comparative examples and the examples are subjected to performance detection, and the detection method is as follows: the obtained polyurethane IPN/piezoelectric ceramic/mxeenes high damping intelligent damping sheet was cut into sheets having dimensions (length, width, and thickness) of 10mm × 2mm × 1mm, and subjected to a performance test using a dynamic thermo-mechanical analyzer (Q800, usa), and the test results are shown in table 1 below:
TABLE 1 loss coefficient of polyurethane IPN/piezoelectric ceramic/Mxenes high damping intelligent damping sheet material at specific temperature
Sample name 0℃ 10 20℃ 30 40℃ 50℃
Comparative example 1 0.12226 0.13324 0.14680 0.15364 0.15503 0.15181
Example 1 1.16602 0.82211 0.54659 0.34639 0.22284 0.13657
Example 2 0.83934 0.88376 0.77607 0.60816 0.44794 0.31596
Example 3 0.81394 0.89308 0.81844 0.64546 0.46464 0.32489
FIG. 3 shows the loss factor of the high damping intelligent damping sheet material of polyurethane IPN/piezoelectric ceramic/Mxenes, and it can be seen from the figure that comparative example 1 does not add Mxenes conductive phase, the peak value of the loss factor of the graphs of examples 1-3 moves to high temperature, the temperature zone of the loss factor tan delta >0.8 rises, the glass transition temperature rises, which is more suitable for the use condition of room temperature or higher temperature, and the temperature zone of tan delta >0.6 in the curve widens.
FIG. 4 shows the storage modulus of the polyurethane IPN/piezoelectric ceramic/Mxenes high damping intelligent damping sheet material, and it can be seen from the figure that the Mxenes conductive phase is not added in comparative example 1, the storage modulus of the graphs in examples 1-3 is obviously improved in a low temperature region, and the material shows higher storage modulus after the Mxenes conductive phase is still added in a normal temperature region.
FIG. 5 shows the loss modulus of the high damping intelligent damping sheet material of polyurethane IPN/piezoelectric ceramic/Mxenes, and it can be seen from the figure that the Mxenes conductive phase is not added in comparative example 1, the loss modulus of the graphs of examples 1-3 is obviously improved in a low temperature region, and when the Mxenes conductive phase is still added in a normal temperature region, the material presents a higher loss modulus.
Example 4
A preparation method of a polyurethane/piezoelectric ceramic/Mxenes high-damping intelligent vibration damping sheet material comprises the following steps:
firstly, the piezoelectric ceramics/Mxenes self-assembly is shown in figure 1:
(1) preparation of mxeenes 2D sheets: adding MAX phase (Ti) according to the proportion 2 AlC) 0.05g of ceramic, 0.5mol of NH was added 4 F and 5molH 2 SO 4 In which HF (hydrofluoric acid) and Ti are in situ 2 Molar ratio of AlC 9: 1, stirring for 20h, then washing with deionized water, centrifuging at 8000rad/min, and pouring out supernatant until the pH value of the mixed solution is 5;
(2) stripping mxeenes 2D slices: carrying out ultrasonic treatment on the mixed solution obtained in the step (1) for 1h, carrying out centrifugal treatment for 10min at 2000rad/min after the ultrasonic treatment is finished, taking the upper-layer turbid solution as a stripped Mxenes2D sheet layer aqueous solution, and sealing and storing;
(3) mxeenes self-assembly: adding 10g of piezoelectric ceramic (PZT) particles according to a ratio, requiring 20g of deionized water to be added for ultrasonic dispersion for 30min-6min, simultaneously requiring 10g of the aqueous solution of the Mxenes2D lamella stripped in the step (2) to be added, and finally requiring 2h of stirring the mixed solution to complete self-assembly, and sealing and storing.
Secondly, preparing a polyurethane matrix, as shown in figure 2
(4) Primary blending: weighing 30g of polytetramethylene glycol, 10g of polyol and 0.5g of isocyanate according to the mixture ratio, and blending for 20 min;
(7) secondary blending of polyurethane: continuously blending the blended liquid in the step (4) for 10min, sealing and storing
Preparation of polyurethane/piezoelectric ceramic/Mxenes high-damping intelligent vibration damping sheet material
(6) Pre-polymerization: preserving the heat of the blending liquid obtained in the step (6) for 4 hours at 70 ℃ to finish prepolymerization;
(7) and (3) compounding and blending for three times: and (3) mixing the suspension liquid self-assembled in the step (3) and the pre-polymerized blending liquid in the step (7) in a ratio of 1: 20, adding 20g of foam homogenizing agent CGY-3, stirring and foaming, pouring into a mold, and closing the mold;
(8) final polymerization: keeping the temperature for 14h at 120 ℃ after die assembly;
(9) and (3) cooling: cooling the vibration damping sheet material for 1h at room temperature after the mold is opened;
(10) polarization: and (3) pasting copper electrodes on two sides of the surface of the piezoelectric damping composite material obtained in the step (10), and polarizing for 30min at 3kv/mm in the environment of 60 ℃ silicone oil. Finally obtaining the polyurethane/piezoelectric ceramic/Mxenes high damping intelligent damping sheet material.
Example 5
A preparation method of a polyurethane IPN/piezoelectric ceramic/Mxenes high damping intelligent damping sheet material comprises the following steps:
firstly, piezoelectric ceramics/mxeenes self-assembly, as shown in fig. 1:
(1) preparation of mxeenes 2D sheets: adding MAX phase (Ti) according to the proportion 2 AlC) 0.5g of ceramic, 1.5mol of NH is required to be added 4 F and 12mol of H 2 SO 4 In which HF (hydrofluoric acid) and Ti are in situ 2 Molar ratio of AlC 9: stirring for 30h, then washing with deionized water, centrifuging by 10000rad/min, pouring out supernatant, and washing until the pH value of the mixed solution is 7;
(2) stripping mxeenes 2D slices: carrying out ultrasonic treatment on the mixed solution obtained in the step (1) for 3 hours, carrying out centrifugal treatment for 30 minutes at 4000rad/min after the ultrasonic treatment is finished, taking the upper-layer turbid solution as a stripped Mxenes2D sheet-layer aqueous solution, and sealing and storing;
(3) mxeenes self-assembly: adding 20g of piezoelectric ceramic (PZT) particles according to the proportion, requiring to add 50g of deionized water for ultrasonic dispersion for 6min, simultaneously requiring to add 20g of Mxenes2D lamella water solution stripped in the step (2), and finally requiring to stir the mixed solution for 10h to complete self-assembly, and sealing and storing.
Secondly, preparing a polyurethane IPN matrix as shown in figure 2
(4) Primary blending: weighing 90g of polytetramethylene glycol, 30g of polyalcohol and 2.5g of isocyanate according to the mixture ratio, and blending for 30 min;
(5) and (3) secondary blending: weighing 60g of butyl methacrylate and 60g of methyl methacrylate according to the ratio, and blending with the mixed solution in the step (4) for 30 min;
(6) three times of IPN blending: and (3) adding 1g of initiator Azobenzene (AIBN) into the blended liquid obtained in the step (5), blending for 20min, and sealing and storing.
Preparation of polyurethane IPN/piezoelectric ceramic/Mxenes high-damping intelligent vibration damping sheet material
(7) Pre-polymerization: preserving the heat of the blending liquid obtained in the step (6) for 8 hours at the temperature of 80 ℃ to finish prepolymerization;
(8) four times of composite blending: and (3) mixing the suspension self-assembled in the step (3) with the pre-polymerized blend liquid in the step (7) in a ratio of 10: 100, adding 40g of foam homogenizing agent CGY-3, stirring and foaming, pouring into a mold, and closing the mold;
(9) final polymerization: keeping the temperature for 10 hours at 150 ℃ after die assembly;
(10) and (3) cooling: cooling the vibration damping sheet material for 2 hours at room temperature after the mold is opened;
(11) polarization: and (3) pasting copper electrodes on two sides of the surface of the piezoelectric damping composite material obtained in the step (10), and polarizing for 30min at 5kv/mm in the environment of 60 ℃ silicone oil. Finally obtaining the polyurethane IPN/piezoelectric ceramic/Mxenes high damping intelligent damping sheet material.
The materials obtained in examples 4 to 5 were tested by the following test methods in example 1: the resulting polyurethane IPN/piezoelectric ceramic/mxeenes high damping smart damping sheet was cut into sheets having dimensions (length, width, and thickness) of 10mm × 2mm × 1mm, and subjected to a performance test using a dynamic thermo-mechanical analyzer (Q800, usa), and the results are shown in table 2 below:
TABLE 2 loss coefficient of polyurethane IPN/piezoelectric ceramics/Mxenes high damping intelligent damping sheet material at specific temperature
0℃ 10 20℃ 30℃
Example 4 0.2247 0.1824 0.0232 0.0157
Example 5 0.2546 0.2354 0.2232 0.2323
As can be seen from the above Table 2, when BMA and MMA are not added, the formed polyurethane/piezoelectric ceramic/Mxenes high damping intelligent vibration damping sheet material is far lower than that of the embodiment 3 at normal temperature; as can be seen from the data in example 5 of the table, the loss is lower at room temperature when BMA and MMA are added to the end.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims (10)

1. The high-damping intelligent vibration damping sheet material is characterized by comprising the following components in parts by mass:
30-90 parts of polytetramethylene glycol (PTMEG), 7.5-30 parts of polyhydric alcohol, 0.5-2.5 parts of isocyanate, 0-60 parts of Butyl Methacrylate (BMA), 0-60 parts of Methyl Methacrylate (MMA), 0-1 part of initiator, 20-40 parts of foam stabilizer, 0.05-0.5 part of MAX phase ceramic and 10-20 parts of piezoelectric ceramic.
2. The high-damping intelligent damping sheet material according to claim 1, wherein the preferable high-damping intelligent damping sheet material comprises the following components in parts by mass: 50-80 parts of polytetramethylene glycol (PTMEG), 15-25 parts of polyhydric alcohol, 1-2 parts of isocyanate, 20-40 parts of Butyl Methacrylate (BMA), 20-40 parts of Methyl Methacrylate (MMA) 10.2-0.6 part of initiator, 30-35 parts of foam stabilizer, 0.1-0.2 part of MAX phase ceramic and 15-18 parts of piezoelectric ceramic.
3. The high-damping intelligent vibration damping sheet material according to claim 1, wherein the piezoelectric ceramic is high lead titanate ceramic (PZT) with a particle size of 300nm to 1000 nm;
the initiator is azo initiator.
4. The high damping smart damping patch material of claim 1, wherein said MAX phase ceramic is Ti 2 AlC ceramic particles.
5. The preparation method of the high-damping intelligent vibration damping sheet material as claimed in claim 1, wherein the high-damping intelligent vibration damping sheet material is prepared by taking Mxenes as a conductive phase, taking ceramic particles as a piezoelectric phase, taking polyurethane interpenetrating cross-linked network foam as a polyurethane IPN matrix, self-assembling the Mxenes on piezoelectric ceramics, and then compounding the piezoelectric ceramics and the matrix.
6. A high damping smart damping patch material as claimed in claim 5, wherein said Mxenes self-assemble on piezoelectric ceramics as follows:
(1) preparation of mxeenes 2D sheets: adding MAX phase ceramic into NH 4 F and H 2 SO 4 Stirring the mixed solution for 20 to 30 hours, then washing the mixed solution by using deionized water, and pouring out supernate after centrifugation to obtain the washed mixed solution with the pH value of 5 to 7;
(2) stripping mxeenes 2D slices: carrying out ultrasonic treatment on the mixed solution obtained in the step (1) for 1-3 h, carrying out centrifugal treatment for 10-30 min after the ultrasonic treatment is finished, taking the upper-layer turbid solution as a stripped Mxenes2D sheet layer aqueous solution, and sealing and storing;
(3) mxeenes self-assembly: and (3) adding deionized water into the piezoelectric ceramic particles, performing ultrasonic dispersion for 30-6 min, adding the Mxenes2D sheet layer aqueous solution stripped in the step (2), stirring the mixed solution for 2-10 h to complete self-assembly, and sealing and storing to obtain the piezoelectric ceramic/Mxenes assembly suspension.
7. A high damping intelligent damping sheet material according to claim 6, characterized in that NH in step (1) 4 F and H 2 SO 4 The molar ratio of (A) to (B) is 1-3: 10-24; the centrifugation speed is 8000-10000 rad/min;
the speed of centrifugation in the step (2) is 2000-4000 rad/min;
the mass ratio of the piezoelectric ceramics to the deionized water to the Mxenes2D lamellar water solution in the step (3) is as follows: 10-20: 20-50:10-20.
8. The high damping intelligent damping sheet material according to claim 5, wherein the preparation method of the polyurethane IPN matrix comprises the following steps:
a) primary blending: weighing the polytetramethylene glycol, the polyol and the isocyanate according to the mixture ratio, and blending for 20-30 min;
b) and (3) secondary blending: weighing butyl methacrylate and methyl methacrylate according to the proportion, and blending with the mixed solution in the step a) for 20-30 min;
c) three times of blending of IPN: adding an initiator into the blending liquid obtained in the step b), blending for 10min-20min, sealing and storing to obtain the polyurethane IPN matrix solution.
9. The high damping intelligent damping sheet material according to claim 8, wherein the high damping intelligent damping sheet material is prepared by the following method:
i) pre-polymerization: keeping the temperature of the polyurethane IPN matrix solution at 70-80 ℃ for 4-8 h to complete prepolymerization;
ii) four compound blends: mixing the piezoelectric ceramic/Mxenes assembly suspension and the pre-polymerized blending liquid in the step i) in a ratio of 1: 100-20: 100, adding 20-40 parts by mass of foam stabilizer, stirring for foaming, pouring into a mold, and closing the mold;
iii) final polymerization: after die assembly, keeping the temperature for 10 to 14 hours at the temperature of between 120 and 150 ℃;
iv) cooling: opening the die, and cooling the damping sheet material for 1-2 h at room temperature;
v) polarization: and (4) carrying out polarization treatment on the piezoelectric damping composite material obtained in the step iv) to finally obtain the polyurethane IPN/piezoelectric ceramic/Mxenes high-damping intelligent damping sheet material.
10. A high damping smart damping sheet material according to claim 9, wherein said polarization treatment is: copper electrodes are pasted on two sides of the surface of the piezoelectric damping composite material, and polarization is carried out for 30min at the temperature of 60 ℃ in the environment of silicone oil at the voltage of 3kv/mm-5 kv/mm.
CN202210214570.5A 2022-03-07 2022-03-07 High-damping intelligent vibration-damping sheet material and preparation method thereof Active CN114874609B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202210214570.5A CN114874609B (en) 2022-03-07 2022-03-07 High-damping intelligent vibration-damping sheet material and preparation method thereof
NL2034116A NL2034116A (en) 2022-03-07 2023-02-08 High-damping intelligent vibration attenuation sheet material and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210214570.5A CN114874609B (en) 2022-03-07 2022-03-07 High-damping intelligent vibration-damping sheet material and preparation method thereof

Publications (2)

Publication Number Publication Date
CN114874609A true CN114874609A (en) 2022-08-09
CN114874609B CN114874609B (en) 2023-04-28

Family

ID=82668390

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210214570.5A Active CN114874609B (en) 2022-03-07 2022-03-07 High-damping intelligent vibration-damping sheet material and preparation method thereof

Country Status (2)

Country Link
CN (1) CN114874609B (en)
NL (1) NL2034116A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05240298A (en) * 1991-08-15 1993-09-17 Masao Sumita Damping material
JP2004143340A (en) * 2002-10-25 2004-05-20 Kanegafuchi Chem Ind Co Ltd Composition for vibration damping material and molded article
CN101191000A (en) * 2006-11-29 2008-06-04 天津科技大学 IPN piezo-electric damping material
CN102604027A (en) * 2012-03-09 2012-07-25 中国农业大学 Polyurethane foam damping material and preparation method for same
CN103214913A (en) * 2013-04-27 2013-07-24 武汉理工大学 Organic piezoelectric damping coating and preparation method thereof
KR20200091029A (en) * 2019-01-18 2020-07-30 주식회사 비즈모델라인 Manufacturing Method and Compositions for Power Saving Matter by using Lead Zirconate Titanate, Shungite, Tourmaline and Caster Oil
CN111793351A (en) * 2020-07-07 2020-10-20 中国人民解放军海军工程大学 Polyurethane/vinyl resin IPN damping material and preparation method thereof
CN112646296A (en) * 2020-12-21 2021-04-13 之江实验室 Preparation method of 0-0-3 type flexible piezoelectric composite film

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05240298A (en) * 1991-08-15 1993-09-17 Masao Sumita Damping material
JP2004143340A (en) * 2002-10-25 2004-05-20 Kanegafuchi Chem Ind Co Ltd Composition for vibration damping material and molded article
CN101191000A (en) * 2006-11-29 2008-06-04 天津科技大学 IPN piezo-electric damping material
CN102604027A (en) * 2012-03-09 2012-07-25 中国农业大学 Polyurethane foam damping material and preparation method for same
CN103214913A (en) * 2013-04-27 2013-07-24 武汉理工大学 Organic piezoelectric damping coating and preparation method thereof
KR20200091029A (en) * 2019-01-18 2020-07-30 주식회사 비즈모델라인 Manufacturing Method and Compositions for Power Saving Matter by using Lead Zirconate Titanate, Shungite, Tourmaline and Caster Oil
CN111793351A (en) * 2020-07-07 2020-10-20 中国人民解放军海军工程大学 Polyurethane/vinyl resin IPN damping material and preparation method thereof
CN112646296A (en) * 2020-12-21 2021-04-13 之江实验室 Preparation method of 0-0-3 type flexible piezoelectric composite film

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
MORADI, G,等: "Acoustical, damping and thermal properties of polyurethane/poly(methyl methacrylate)-based semi-interpenetrating polymer network foams", 《PLASTICS RUBBER AND COMPOSITES》 *
ZHANG, CM,等: "Facile fabrication of polyurethane-based graphene foam/lead zirconate titanate/polydimethylsiloxane composites with good damping performance", 《RSC ADVANCES》 *
贺江平,等: "锆钛酸铅/聚苯胺/聚氨酯三元阻尼复合材料", 《材料科学与工艺》 *

Also Published As

Publication number Publication date
CN114874609B (en) 2023-04-28
NL2034116A (en) 2023-09-11

Similar Documents

Publication Publication Date Title
CN111808570B (en) Double-component polyurethane adhesive and application thereof
CN102002193B (en) Foamed rubber plate and manufacturing process thereof
CN114316880B (en) Polyurethane structural adhesive with low density and high heat conduction
CN110511708A (en) A kind of high-bond epoxy resin structural adhesive and preparation method thereof
CN109950556B (en) Preparation method of carbon fiber bipolar plate with three-dimensional porous structure
CN213891591U (en) Aluminum honeycomb embedded sound insulation floor for railway vehicle
CN114874609B (en) High-damping intelligent vibration-damping sheet material and preparation method thereof
CN114316383A (en) Heat-conducting high-damping vibration-damping rubber material and preparation method and application thereof
CN115260705A (en) Reactor epoxy resin insulation layer crack repair material and preparation method thereof
CN116731478B (en) Main insulating board composite material resistant to insulation and corrosion and preparation method thereof
CN108395518A (en) Rubber tire guide rail electric car guide rail is fixed and sealed insulation modified polyurethane elastomer material and preparation method thereof
CN113200711A (en) Preparation method of high-performance epoxy asphalt paving material
CN115612433A (en) Fatigue-resistant bi-component polyurethane heat-conducting structural adhesive and preparation method thereof
CN111518404A (en) Environment-friendly warm-mix asphalt regenerant and preparation method thereof
CN116410686A (en) High-temperature-resistant polyurethane adhesive and preparation method thereof
CN115479968A (en) Freeze-thaw damage test and evaluation method for cement stabilized macadam material
CN205399097U (en) Noise is little and have power generation facility's a train rail
CN116063859B (en) Material for repairing pavement cracks in high-altitude cold areas and preparation method thereof
CN110132712B (en) Method for evaluating influence of saturated high-humidity environment on fatigue life of bonded joint
CN109148799B (en) Storage battery, storage battery separator and manufacturing method
CN111430647A (en) High-performance lithium ion battery diaphragm and preparation method thereof
CN114933811B (en) High-strength elastic high polymer modified asphalt, preparation and waterproof coiled material, preparation and application thereof and airport pavement structure system
JPH0444388B2 (en)
CN110132766B (en) Method for evaluating fatigue performance of dissimilar base material bonding joint influenced by expansion and contraction times
CN114316598B (en) Preparation method of high-heat-conductivity organic silicon rubber composite material

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant