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Spraying type polyurethane-carbamide damping vibration attenuation noise-reduction protection material

A technology of spraying polyurethane, vibration and noise reduction, applied in polyurea/polyurethane coatings, coatings, etc.

Inactive Publication Date: 2010-03-10
QINGDAO SHAMU INT TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research and development of polyurea technology for vibration and noise reduction is still blank at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Take 52 parts of MDI-50 and 48 parts of 220 polyether with a hydroxyl equivalent weight of 1000. First, heat the polyether diol, and stir it under vacuum for 1 to 2 hours at 90°C to remove the existing moisture; secondly, cool to 70°C under nitrogen protection, add MDI-50, and raise the temperature to 80°C± 4°C, keep warm for 1 to 2 hours to obtain a semi-prepolymer with an NCO% of 15%, which is the A component. The R component is composed of 11 parts T-5000, 54 parts of 220 polyether, 5 parts of DETDA, 10 parts 4200, 15 parts of polycaprolactone, 4 parts of titanium dioxide and 1 part of German BYK company's electrically neutral wetting and dispersing agent. A and R two components pass The company's H-20 / 35 main engine and GX-7 spray gun are sprayed on the treated concrete surface at a ratio of 1:1 (volume ratio) to form a polyurethane-urea damping vibration-damping and noise-reducing elastomer with a gel time of 15 seconds.

Embodiment 2

[0024] Will 43 parts of 143L and 57 parts of 330 polyether with a hydroxyl equivalent of 1000 were synthesized according to the process in Example 1 to obtain a semi-prepolymer with an NCO% of 10%, which is the A component. The R component is composed of 23.92 parts of 330 polyether, 60.33 parts D-2000 and 15.75 parts of DETDA. A, R component through The company's HXP-3 host and Fusion-AP spray gun are sprayed at a ratio of 1:1 (volume ratio) to form polyurethane-urea damping, vibration-damping and noise-reducing elastomers, and the gel time is 6 seconds.

Embodiment 3

[0026] 59.3 parts of MDI-100LL and 40.7 parts of 220 polyether with a hydroxyl equivalent of 1000 were synthesized according to the process in Example 1 to obtain a semi-prepolymer with an NCO% of 15%, which is the A component. The R component is composed of 18.18 parts T-5000, 19.30 parts 330 polyether, 18.17 parts DETDA, 26.03 parts 4200, 20 parts aluminum hydroxide and 24 parts DMMP. A, R component through The company's G-250H main engine and Master spray gun are sprayed on the treated concrete surface at a ratio of 1:1 (volume ratio) to form a polyurethane-urea damping, vibration-damping and noise-reducing elastomer with a gel time of 10 seconds.

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Abstract

The invention discloses a spraying type polyurethane-carbamide damping vibration attenuation noise-reduction protection material consisting of isopyknic components A and R. The isopyknic components Aand R are mixed by high-pressure impaction mixing equipment and then sprayed on a concrete substrate so as to instantly form a damping vibration attenuation noise-reduction protection coating layer with excellent property; the component A is a semi-prepolymer generated from isocyanate and polymer polyalcohol; and the component R is a mixture of end ammonia, polyether polyol, a diamines chain extender and an addition agent. The spraying type polyurethane-carbamide damping vibration attenuation noise-reduction protection material has the advantages of fast curing speed, good viscoelasticity, high intensity, excellent damping vibration attenuation noise-reduction property, and the like and can efficiently construct under a complex and severe environment condition.

Description

technical field [0001] The invention relates to a spray-coated polyurethane-urea damping and noise reduction protection material, which belongs to the field of polymer materials. Background technique [0002] Urban rapid rail transit is of great significance to alleviate the traffic tension in my country's central cities, realize the urban traffic development strategy, promote urban construction and sustained and rapid economic development, save energy and improve urban environmental quality. Urban rapid rail transit has a large investment and a long construction period. Therefore, it is urgent to scientifically and effectively solve the key technical problems of subway construction for the construction of urban rapid rail transit in my country. [0003] Some cities (such as Qingdao, Chongqing, Xi'an, etc.) have relatively complex geological conditions, and the foundation is generally a magmatic rock (granite) type hard subgrade structure, which makes the vibration and noise...

Claims

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Application Information

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IPC IPC(8): C09D175/02C09D175/08C09D5/00C08G18/66
Inventor 黄微波吕平马学强
Owner QINGDAO SHAMU INT TRADE
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