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Polymer-based multilayer foaming composite damping material and preparation method thereof

A composite damping material and polymer-based technology, which is applied in the field of high-damping performance composite materials and polymer-based multilayer foam composite damping materials, can solve the problems of poor damping temperature performance and failure to meet damping performance requirements, and achieve excellent damping The effect of performance, high strength, and low energy consumption

Inactive Publication Date: 2019-04-23
苏州上品嘉新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under normal circumstances, the damping temperature performance of single-component polymer materials is poor, and it cannot meet the damping performance requirements under higher conditions. However, through the microlayer structure and foaming effect, the new composite damping material is formed by alternately arranging the two materials. The damping performance is greatly improved, which can meet the requirements of high damping performance in practical applications

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 100 parts of thermoplastic polyurethane (parts by weight) and 1 part of AC foaming agent are mixed evenly as the raw material of the polymer foam layer, and polylactic acid is used as the material of the polymer structure layer and put into two single-screw extruders of the micro-layer co-extrusion device. In the extruder, the speed ratio of the extruder is 1:1, the temperature of each section of the polymer foam layer extruder is controlled between 130~200°C, and the temperature of each section of the polymer structure layer extruder is controlled at 70~200°C Between, the temperature of the layered stacking unit and the die is set to 200°C, and 6 layered stacking units are used. Thermoplastic polyurethane and polylactic acid are melted and plasticized by the extruder, combined in the confluence, cut and re-laminated sequentially through the division and superposition units, flow out from the die, cooled and drawn by the cooling roller and the winding roller, and are pre...

Embodiment 2

[0035]100 parts of polyolefin elastomer ethylene-octene copolymer pellets (parts by weight) and 1 part of AC foaming agent are mixed uniformly as the raw material of the polymer foam layer, and polyethylene is respectively put into the microlayer as the material of the polymer structure layer In the two single-screw extruders of the co-extrusion device, the speed ratio of the extruders is 1:1, and the temperature of each section of the extruder for the polymer foam layer is controlled between 130 and 200°C. The temperature of each section of the machine is controlled between 130 and 210°C, the temperature of the layered stacking unit and the die is set at 210°C, and 9 layered stacking units are used. Polyolefin elastomer ethylene-octene copolymer and low-density polyethylene are melted and plasticized by the extruder, combined in the confluence, cut and re-laminated sequentially through the division and superposition units, flow out from the die, pass through the cooling roller...

Embodiment 3

[0040] 100 parts of thermoplastic polyurethane (parts by weight) and 1 part of AC foaming agent are uniformly mixed as the raw material of the polymer foam layer, and polymethyl methacrylate pellets are respectively put into the micro-layer co-extrusion device as the material of the polymer structure layer Among the two single-screw extruders, the speed ratio of the extruder is 2:1, the temperature of each section of the polymer foam layer extruder is controlled between 130~200°C, and the temperature of each section of the polymer structure layer extruder is The control is between 110 and 200°C, the temperature of the layered stacking unit and the die is set at 200°C, and 6 layered stacking units are used. Thermoplastic polyurethane and polymethyl methacrylate are melted and plasticized by the extruder, combined in the confluence, cut and re-laminated sequentially through the split and superimposed units, flow out from the die, and are cooled and cooled by the cooling roller an...

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Abstract

The invention relates to a polymer-based multilayer foaming composite damping material and a preparation method thereof. The damping material is formed by alternately arranging structural polymer layers and foaming polymer layers in a layered manner so as to form a high damping performance material having high strength and good toughness, wherein the structural layer comprises a strong rigidity polymer, and is used for controlling the size of gas bubble, limiting the thickness of the foaming layer and ensuring the good mechanical property of the whole material, the foaming layer comprises a thermoplastic elastomer, and can form uniform and dense gas bubbles so as to form the good damping performance polymer foaming layer, a large number of contact interfaces are formed between the foaminglayer and the structural layer, the layer structure remains good, and the interface improves the damping performance of the material through interlayer shearing. According to the present invention, the number of the micro-layers can be controlled and adjusted from two layers to thousands of layers, and the volume ratio of the structural layer to the foaming layer can be controlled as needed; and through the co-action of the foaming layer and the interlayer interface, the damping performance of the material is improved, and the material has characteristics of good mechanical property, no toxicity, no harm, environment protection and low cost of the required raw material.

Description

technical field [0001] The invention belongs to the field of polymer materials and composite material preparation, and relates to a polymer-based multilayer foam composite damping material, which uses a foam layer formed by foaming an elastomer and a high-strength polymer as a structural layer, and has Composites with high damping performance in alternating laminated structures. Background technique [0002] Damping material is a kind of functional material with a very wide range of applications, and the reason for its function is that it can absorb external and internal vibration mechanical energy, and convert it into internal energy and dissipate it, thus converting kinetic energy into thermal energy during deformation Reducing the resonance amplitude of the system and finally realizing its damping effect has received extensive attention in recent years. With the rapid development of science and technology, people pay more and more attention to the harm caused by noise an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B5/18B32B27/06B32B27/20B29K75/00B29K67/00
CPCB29K2067/046B29K2075/00B32B5/18B32B27/065B32B27/20B32B2266/0292B32B2307/558B32B2307/56
Inventor 袁伟忠杜江谢晓云谢利彬
Owner 苏州上品嘉新材料科技有限公司
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