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A kind of preparation method of porous piezoelectric damping composite material

A technology of damping composite materials and composite materials, which is applied in the manufacture of rayon, conjugated synthetic polymer rayon, textiles and papermaking, etc. It can solve the problems that composite materials cannot form effective loops, so as to improve the sound absorption performance and solve the problem of Longevity and fatigue reduction effect

Active Publication Date: 2020-10-27
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a preparation method of a porous piezoelectric damping composite material, which solves the problem that the composite material cannot form an effective circuit in the prior art, prolongs its service life by constructing a conductive path, and improves its sound absorption and damping performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] First, add 0.9g polyacetylene and 5.4g polystyrene to 19.5g solvent N,N-dimethylformamide and stir, after completely dissolving, add 4.5g piezoelectric ceramic ZnO powder with a diameter of 100nm, mix well and prepare spinning solution;

[0056] Add 25 g of damping polymer 107 prepolymer to 70 g of gasoline and stir evenly, then add 5 g of sodium bicarbonate foaming agent to prepare a damping solution;

[0057] Put the spinning solution into the propulsion pump, adjust the spinning voltage to 22kv, the receiving distance to 16cm, and the propulsion speed to 0.3ml / h, adjust the spinning temperature to 20°C, and the spinning humidity to 10% for electrostatic spinning. The horizontal mixer collects the electrospun fibers, adjusts the stirring speed to 120r / min, and prepares a porous damping composite solution with a fiber-to-damping solution mass ratio of 1:10; injects the prepared damping composite solution into the mold, and heats it at 100°C Heat and hold for 12 hours ...

Embodiment 2

[0060] First, 1.5g of polyaniline and 3.0g of polyethylene oxide were added to 16.5g of solvent chloroform and stirred. After completely dissolving, 9.0g of piezoelectric ceramic BaTiO with a diameter of 30nm and an aspect ratio of 10 was added. 3 The fibers are uniformly mixed to prepare a spinning solution;

[0061] Add 30 g of damping polymer polyurethane to 65 g of tetrahydrofuran and stir evenly, then add 5 g of azodicarbonamide foaming agent to prepare a damping solution;

[0062] Put the spinning solution into the propulsion pump, adjust the spinning voltage to 30kv, the receiving distance to 22cm, and the propulsion speed to 0.5ml / h, adjust the spinning temperature to 25°C, and the spinning humidity to 20% for electrostatic spinning. The horizontal mixer collects the electrospun fibers, adjusts the stirring speed to 60r / min, and prepares a porous damping composite solution with a fiber-to-damping solution mass ratio of 1:20; injects the prepared damping composite solut...

Embodiment 3

[0065] First, add 0.8g of polypyrrole and 3.2g of methyl methacrylate to 22g of solvent N,N-dimethylformamide and stir. After completely dissolving, add 6.0g of piezoelectric ceramic BiFeO with a diameter of 120nm and an aspect ratio of 3. 3 Powder, mixed evenly to prepare a spinning solution;

[0066] Add 40 g of damping polymer epoxy resin to 40 g of toluene and stir evenly, then add 20 g of diphenylsulfonylhydrazide ether foaming agent to prepare a damping solution;

[0067] Put the spinning solution into the propulsion pump, adjust the spinning voltage to 26kv, the receiving distance to 20cm, and the propulsion speed to 0.6ml / h, adjust the spinning temperature to 30°C, and the spinning humidity to 10% for electrostatic spinning. The horizontal mixer collects the electrospun fibers, adjusts the stirring speed to 20r / min, and prepares a porous damping composite solution with a fiber-to-damping solution mass ratio of 1:12; injects the prepared damping composite solution into ...

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Abstract

The invention discloses a preparation method of a porous piezoelectric damping composite material. The preparation method includes the specific steps that 1, piezoelectric ceramic powder or piezoelectric ceramic fibers, a spinnable conducting polymer A, a solvent A, a damping polymer B, a solvent B and a foamer B are prepared; 2, the spinnable conducting polymer A is added into the solvent A, thematerials are mixed to be uniform, a polymer solution is obtained, the piezoelectric ceramic powder or piezoelectric ceramic fibers are added into the polymer solution, and a spinning solution is prepared; the damping polymer B is added into the solvent B, the materials are stirred to be uniform, then the foamer B is added, and a damping solution is prepared; 3, the spinning solution is put in a boost pump, the spinning voltage, the receiving distance, the propelling speed and the spinning temperature and humidity are adjusted, and electrostatic spinning is carried out; 4, horizontal stirringand collecting; 5, curing molding; 6, polarizing. By means of the method, the problem that in the prior art, a composite cannot form an effective circuit is solved.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a preparation method of a porous piezoelectric damping composite material. Background technique [0002] Damping materials can effectively suppress noise pollution, and can also effectively reduce fatigue, distortion and other effects caused by vibration, so they are widely used in machinery manufacturing, shipbuilding, automobile manufacturing, aircraft manufacturing, environmental protection and noise reduction and other fields. When the polymer damping material is subjected to an external force, the internal intramolecular and intermolecular interaction or friction force consumes external energy, turning it into heat energy and dissipating it, thus playing the role of vibration reduction and damping. However, damping sound absorption will cause frequent heating, coupled with the disadvantages of poor aging resistance of polymers, it is easy t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/10D01F8/16D01F8/14D01F1/10
CPCD01F1/10D01F8/10D01F8/14D01F8/16
Inventor 汤玉斐刘照伟赵康王尉华张琦
Owner XIAN UNIV OF TECH
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