Microporous polyurethane elastomer sandwich structure and preparation method thereof

A technology of polyurethane elastomer and polyurethane elasticity, which is applied in the direction of polyurea/polyurethane adhesive, chemical instruments and methods, film/sheet without carrier, etc., can solve the problem of weak mechanical bearing capacity of unconstrained polyurethane elastomer and composite material damping Weak vibration damping performance and other issues, to reduce fatigue damage, increase interface strength, and ensure accuracy

Pending Publication Date: 2022-04-26
山东奥卓新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, to propose a microporous polyurethane elastomer sandwich structure and its preparation method, to solve the problem of weak damping and vibration reduction properties of composite materials for structures, and the mechanical bearing capacity of unconstrained polyurethane elastomers. weak question

Method used

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  • Microporous polyurethane elastomer sandwich structure and preparation method thereof
  • Microporous polyurethane elastomer sandwich structure and preparation method thereof
  • Microporous polyurethane elastomer sandwich structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Such as figure 1 Shown, a kind of microporous polyurethane elastomer sandwich structure, this sandwich structure comprises two skins and a sandwich material, is a sandwich material between two skins;

[0056] The skin is carbon fiber prepreg, and the surface density of carbon fiber is 200g / m 2 , the fabric type is plain weave, and the matrix resin is epoxy resin;

[0057] The sandwich material is a microcellular polyurethane elastomer, and the density of the microcellular polyurethane elastomer is 350kg / cm 3 , dynamic and static stiffness ratio ≤ 1.35, static load limit ≥ 0.1N / mm 2 , the closed cell rate is ≥80%, and the thickness is 0.5mm; the two skins are the upper skin and the lower skin, the upper skin is 5 layers of carbon fiber prepreg, and the lower skin is 10 layers of carbon fiber prepreg;

[0058] The upper surface of the sandwich material is the upper skin, and the sandwich material and the upper skin are bonded with an epoxy resin film, the lower surface...

Embodiment 2

[0070] Such as figure 2 Shown, a kind of microporous polyurethane elastomer sandwich structure, this sandwich structure comprises three-layer skin and two-layer sandwich material; Between two skins is a sandwich material;

[0071] The skin is carbon fiber prepreg, and the surface density of carbon fiber is 200g / m 2 , the fabric type is plain weave, and the matrix resin is epoxy resin;

[0072] The sandwich material is a microcellular polyurethane elastomer, and the density of the microcellular polyurethane elastomer is 600kg / cm 3 , dynamic and static stiffness ratio ≤ 1.35, static load limit ≥ 0.1N / mm 2 , closed cell rate ≥ 80%, thickness 0.5mm;

[0073] The three-layer skin is the upper skin, the middle skin and the lower skin, the two-layer sandwich material is the upper sandwich material and the lower sandwich material respectively, and the upper sandwich material is between the upper skin and the middle skin. Between the middle skin and the lower skin is the lower san...

Embodiment 3

[0084] Such as image 3 As shown, a microporous polyurethane elastomer sandwich structure, the sandwich structure is a cylindrical structure, including two layers of skins and a layer of sandwich material; between the two skins is a sandwich material;

[0085] The skin is basalt fiber prepreg, and the surface density of basalt fiber is 200g / m 2 , the fabric type is plain weave, and the matrix resin is epoxy resin;

[0086] The sandwich material is a microcellular polyurethane elastomer, and the density of the microcellular polyurethane elastomer is 400kg / cm 3 , dynamic and static stiffness ratio ≤ 1.35, static load limit ≥ 0.1N / mm 2 , closed cell rate ≥ 80%, thickness 1mm;

[0087] The two skins are respectively an outer skin and an inner skin, and a sandwich material is between the outer skin and the inner skin;

[0088] The outer skin is used as the outer side of the tube wall of the cylindrical structure, and the outer side of the tube wall is 8 layers of basalt fiber p...

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Abstract

The invention relates to a microporous polyurethane sandwich structure damping material and a preparation method thereof, belongs to the technical field of preparation and application of structure and function integrated composite materials, realizes high-bearing and high-damping integrated molding of the composite materials through material design, can be directly used for manufacturing equipment or components with bearing and vibration reduction requirements, and has the advantages of low cost and high practicability. And passive vibration reduction of the equipment is converted into active vibration reduction. According to the sandwich structure, the high-rigidity restraint layer, namely the skin, is added outside the microporous polyurethane elastomer damping layer so as to increase shear deformation of the damping layer, the purpose of consuming vibration energy is achieved, and then fatigue damage of vibration to a structural material is reduced so as to prolong the service life of the material; a part or equipment has active vibration reduction and vibration isolation through generally pure passive vibration reduction; the structural composite material has the damping function while having the bearing capacity, fatigue damage of vibration to the structural material can be effectively reduced, the service life of the material is further prolonged, and the operation precision of equipment is guaranteed.

Description

technical field [0001] The invention relates to a microporous polyurethane elastomer sandwich structure and a preparation method thereof, which belongs to the technical field of preparation and application of structural-function integrated composite materials. Through material design, the integrated molding of high load-bearing and high damping of composite materials can be directly used. In the manufacture of equipment or components with bearing and vibration reduction requirements, the equipment can be transformed from passive vibration reduction to active vibration reduction. Background technique [0002] Advanced resin-based composite materials (hereinafter referred to as composite materials) have a series of characteristics such as high specific strength, high specific modulus, strong designability and excellent comprehensive performance. , aerospace, weapons, ships, energy, construction and sporting goods and other fields have been greatly used. According to statistic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B9/04B32B27/40B32B7/12B32B37/10B32B37/12B32B1/08C09J7/10C09J7/30C09J163/00C09J175/04C08G18/76C08G18/48C08G18/10C08G18/58
CPCB32B5/02B32B5/26B32B27/40B32B27/12B32B7/12B32B1/08B32B37/1018B32B37/1284C09J7/10C09J7/30C09J163/00C09J175/04C08G18/4825C08G18/4854C08G18/7671C08G18/10B32B2260/021B32B2260/046B32B2262/106B32B2262/10B32B2307/552B32B2307/56C08G18/58
Inventor 张旭东张旭锋吴敬朋夏义兵施成旺甄茂民冯笑
Owner 山东奥卓新材料有限公司
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