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Waterproof viscous damping material and preparation method thereof

A viscous damping and waterproof technology, applied in the field of damping materials, can solve the problems of reducing damping effect, affecting damping energy consumption, large thermal expansion coefficient, etc. The effect of adjustable hysteresis

Inactive Publication Date: 2020-06-12
马学强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large coefficient of thermal expansion can easily cause overpressure problems; small surface tension affects the adhesion to the damper and affects damping energy consumption; hygroscopicity and lower density than water make the open viscous shear damper in harsh environments, once Water, it is very easy to make silicone oil and its modified substances absorb water or be replaced by water out of the damper chamber, reducing the damping effect and even causing the damper to fail

Method used

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  • Waterproof viscous damping material and preparation method thereof
  • Waterproof viscous damping material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A waterproof viscous damping material is prepared from the following raw material components in parts by weight: 52 parts of diphenylmethane diisocyanate, 448 parts of polyoxypropylene ether polyol, and 0.1 part of bismuth carboxylate.

[0020] Add polyoxypropylene ether polyol into the reaction kettle, vacuum dehydrate at 110°C, stir and cool down to 50-60°C; add diphenylmethane diisocyanate, stir for 0.5-1h; heat up to 70°C, add bismuth carboxylate , stirring for 0.5-1h; heating up to 85-90°C, and reacting for 2-4h to prepare a waterproof viscous damping material.

Embodiment 2

[0022] A waterproof viscous damping material is prepared from the following raw material components in parts by weight: 38 parts of polymethylene polyphenyl polyisocyanate, 462 parts of polyoxypropylene ether polyol, and 0.1 part of bismuth carboxylate.

[0023] Add polyoxypropylene ether polyol into the reaction kettle, vacuum dehydrate at 110°C, stir and cool down to 50-60°C; add polymethylene polyphenyl polyisocyanate, stir for 0.5-1h; heat up to 70°C, add Bismuth carboxylate, stirring for 0.5-1h; heating up to 85-90°C, reacting for 2-4h, to prepare a waterproof viscous damping material.

Embodiment 3

[0025] A waterproof viscous damping material is prepared from the following raw material components in parts by weight: 50 parts of isophorone diisocyanate, 450 parts of polyoxypropylene ether polyol, and 0.8 part of bismuth carboxylate.

[0026] Add polyoxypropylene ether polyol into the reaction kettle, vacuum dehydrate at 110°C, stir and cool down to 50-60°C; add isophorone diisocyanate, stir for 0.5-1h; heat up to 70°C, add bismuth carboxylate , stirring for 0.5-1h; heating up to 85-90°C, and reacting for 2-4h to prepare a waterproof viscous damping material.

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Abstract

The invention discloses a waterproof viscous damping material and a preparation method thereof, and relates to the technical field of damping materials. The waterproof viscous damping material is prepared from, by weight, 35-56 parts of isocyanate, 220-930 parts of polyether polyol, and 0.1-1 part of a catalyst. The preparation method of the waterproof viscous damping material comprises the following steps: S1, adding the polyether polyol into a synthesis reaction kettle, carrying out vacuum dehydration at 110 DEG C, stirring and cooling to 50-60 DEG C; S2, adding isocyanate, and stirring for0.5-1 h; and S3, heating to 70 DEG C, adding a catalyst, stirring for 0.5-1 h, heating to 85-90 DEG C, and reacting for 2-4 h to obtain the waterproof viscous damping material. The waterproof viscousdamping material provided by the invention adopts a design mode of partial copolymerization and interpenetration of various resin chain segments, is high in damping performance, wide in use temperature interval and adjustable in viscosity coefficient, meets the requirements of different application temperatures, has excellent waterproof characteristics, does not contain any volatile organic solvent, and has an evaporation degree of less than 0.5%.

Description

technical field [0001] The invention relates to the technical field of damping materials, in particular to a waterproof viscous damping material and a preparation method thereof. Background technique [0002] A damper is a device that dissipates vibration energy by providing resistance to movement. After years of development, dampers have been widely used in vibration and noise reduction in aerospace, ships, guns, automobiles and other fields. At present, the successful and practical dampers mainly include friction dampers, viscoelastic dampers, metal yield dampers, hydraulic viscous dampers, and viscous shear dampers. Although the friction damper is simple in structure and low in cost, it has small bearing capacity and poor temperature stability. The viscoelastic damper has a certain initial stiffness, which will affect the original structural design and calculation, produce unexpected side effects, and also has the problem of poor temperature stability. Although metal y...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/48C08G18/75C08G18/22F16F9/30
CPCC08G18/227C08G18/48C08G18/755C08G18/758C08G18/7664C08G18/7671F16F9/30
Inventor 马学强李鑫茂
Owner 马学强