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Viscoelastic damping material as well as preparation method and application thereof

A damping material and viscoelastic technology, applied in the field of viscoelastic damping materials and preparation, can solve the problems of complex process and affect the damping performance of materials, and achieve the effect of satisfying process performance, improving damping performance and satisfying damping performance.

Inactive Publication Date: 2021-02-19
QINGDAO AIR NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the production and assembly process of the steel spring isolator, solid damping materials such as rubber are difficult to evenly fill the cavity of the steel spring isolator, and the process is complicated, which seriously affects the damping performance of the material

Method used

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  • Viscoelastic damping material as well as preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0024] A viscoelastic damping material, including A component and B component, wherein, A component includes the following raw materials in parts by weight: 180-420 parts of diisocyanate, 550-840 parts of polyether polyol; B component includes the following Raw materials in parts by weight: 760-920 parts of polyether polyol, 65-280 parts of amino-terminated chain extender, and 5-12 parts of organic small molecule hybrid damping modifier.

[0025] Specifically, diisocyanates include toluene diisocyanate, diphenylmethane diisocyanate, 1,6-hexamethylene diisocyanate, isophorone diisocyanate, xylylene diisocyanate, trimethylhexamethylene diisocyanate, One or more of diisocyanate, methylcyclohexyl diisocyanate, dicyclohexylmethane diisocyanate, tetramethylxylylene diisocyanate; diisocyanate in the embodiment of the application is 365 parts by weight of diphenyl methyl methane diisocyanate.

[0026] Specifically, polyether polyols include polyoxypropylene polyols and / or polytetrahy...

Embodiment 2

[0034] A viscoelastic damping material, including A component and B component, wherein, A component includes the following raw materials in parts by weight: 180-420 parts of diisocyanate, 550-840 parts of polyether polyol; B component includes the following Raw materials in parts by weight: 760-920 parts of polyether polyol, 65-280 parts of amino-terminated chain extender, and 5-12 parts of organic small molecule hybrid damping modifier.

[0035] Specifically, 205 parts by weight of toluene diisocyanate is used as the diisocyanate in the examples of the present application.

[0036] Specifically, the functionality of the polyether polyol is 2.0-3.0, and the average molecular weight is 1000-4000; the polyether polyol in the A component in the embodiment of the present application uses polytetrahydrofuran polyol PTMG2000 with a weight part of 795 parts, and the B group The polyether polyol is divided into 427 parts by weight of polyether polyol TMD-3000 and 480 parts by weight o...

Embodiment 3

[0043] A viscoelastic damping material, including A component and B component, wherein, A component includes the following raw materials in parts by weight: 180-420 parts of diisocyanate, 550-840 parts of polyether polyol; B component includes the following Raw materials in parts by weight: 760-920 parts of polyether polyol, 65-280 parts of amino-terminated chain extender, and 5-12 parts of organic small molecule hybrid damping modifier.

[0044] Specifically, 398 parts by weight of isophorone diisocyanate are used as the diisocyanate in the examples of the present application.

[0045] Specifically, the functionality of the polyether polyol is 2.0-3.0, and the average molecular weight is 1000-4000; the polyether polyol in component A in the embodiment of the present application uses 602 parts by weight of polyether polyol TMD-3000, The polyether polyol in component B is 859 parts by weight of polytetrahydrofuran polyol PTMG-2000.

[0046] Specifically, 131 parts by weight of...

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Abstract

The invention provides a viscoelastic damping material as well as a preparation method and an application thereof, the viscoelastic damping material comprises a component A and a component B, the component A comprises the following raw materials in parts by weight: 180-420 parts of diisocyanate and 550-840 parts of polyether polyol; and the component B comprises the following raw materials in parts by weight: 760-920 parts of polyether polyol, 65-280 parts of an amino-terminated chain extender and 5-12 parts of an organic small molecule hybrid damping modifier. According to the viscoelastic damping material disclosed by the invention, isocyanate reacts with hydroxyl in polyether polyol to generate a polyurethane elastomer high polymer material containing a carbamate structure, and the polyurethane elastomer high polymer material can be poured in a steel spring vibration isolator, so that the viscoelastic damping material is called as liquid rubber or a pouring type viscoelastic dampingmaterial; and after pouring is completed, crosslinking and curing can be conducted to form a stable three-dimensional network structure, toppling and flowing out are avoided in the carrying, installing and using processes, the process performance is met, and the damping performance is also met.

Description

technical field [0001] The invention relates to the technical field of damping materials, in particular to a viscoelastic damping material, a preparation method and an application. Background technique [0002] With the development of modern industrial technology, the scope of noise occurrence is wider and higher, and the frequency of occurrence is higher and higher. More and more areas are exposed to noise pollution. Noise pollution has become the fourth largest after the "three wastes". harm. On the one hand, noise pollution can cause hearing damage to people, cause endocrine and mental disorders and induce diseases, and on the other hand, it can cause a decrease in the accuracy of instruments and meters and affect the normal operation of equipment. Therefore, vibration reduction and noise reduction is an urgent problem to be solved in many fields. [0003] As a widely used vibration isolator, the steel spring vibration isolator is usually placed between the vibration so...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08K5/47C08K5/134C08K5/1575C08G18/66C08G18/48C08G18/32C08G18/38F16F3/10
CPCC08K5/47C08K5/1345C08K5/1575C08G18/6685C08G18/4804C08G18/4854C08G18/10F16F3/10C08L75/08
Inventor 王宝柱李灿刚王伟温喜梅张天华
Owner QINGDAO AIR NEW MATERIALS
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