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A solvent-free self-leveling polyurethane damping material molded at room temperature and a preparation method thereof

A damping material and self-leveling technology, which is applied in the field of solvent-free self-leveling room-temperature molding polyurethane damping material and its preparation, can solve the problems of thick damping layer, inconvenient construction, and no known preparation method of damping layer, etc., and achieve good flame retardancy performance, the effect of good damping properties

Inactive Publication Date: 2018-11-30
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As reported in patents CN103031030A, CN 104129132A, and CN105273599A, two-component solvent-free polyurethane or water-based acrylic emulsion is mostly used as the base material, and the damping layer is relatively thick, requiring manual scraping and coating for many times, which is inconvenient for construction
There is no report on the preparation method of the damping layer suitable for large-area self-leveling construction of the deck

Method used

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  • A solvent-free self-leveling polyurethane damping material molded at room temperature and a preparation method thereof
  • A solvent-free self-leveling polyurethane damping material molded at room temperature and a preparation method thereof
  • A solvent-free self-leveling polyurethane damping material molded at room temperature and a preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: The solvent-free self-leveling room-temperature molding polyurethane deck damping material of this example includes the following raw materials by weight: 30 parts of hydroxyl-terminated star polymer, 8 parts of hydroxyl-terminated linear polyether, 2 parts of auxiliary agent, and damping filler 10 parts, 27 parts of flame retardant filler, 8 parts of water absorbing agent, 15 parts of polyisocyanate.

[0032] The preparation process is as follows: add hydroxyl-terminated star polymer and hydroxyl-terminated linear polyether into a vacuum high-speed disperser, add metered dispersant, damping filler, and flame-retardant filler while stirring, and disperse in vacuum for 30 minutes. Add a water absorbent, disperse in vacuum for 15 minutes, add a defoamer and disperse for 10 minutes, and obtain the viscous hydroxyl-terminated polymer A component. The construction process is as follows: Mix the hydroxyl-terminated polymer component A and the polyisocyanate B compo...

Embodiment 2

[0033] Embodiment 2: The damping layer of this embodiment includes raw materials with the following weight content: 24 parts of hydroxyl-terminated star polymer, 16 parts of hydroxyl-terminated linear polyether, 2 parts of auxiliary agent, 8 parts of damping filler, and 25 parts of flame-retardant filler , 7 parts of water absorbent, 13 parts of polymerized isocyanate.

[0034] The preparation process is as follows: add hydroxyl-terminated star polymer and hydroxyl-terminated linear polyether into a vacuum high-speed disperser, add metered dispersant, damping filler, and flame-retardant filler while stirring, and disperse in vacuum for 30 minutes. Add a water absorbent, disperse in vacuum for 15 minutes, add a defoamer and disperse for 10 minutes, and obtain the viscous hydroxyl-terminated polymer A component. The construction process is as follows: mix the hydroxyl-terminated polymer component A and polyisocyanate B component evenly, pour it on the cleaned steel deck, push it...

Embodiment 3

[0035] Embodiment 3: The damping layer of this embodiment includes raw materials with the following weight content: 18 parts of hydroxyl-terminated star polymer, 20 parts of hydroxyl-terminated linear polyether, 2 parts of auxiliary agent, 12 parts of damping filler, and 20 parts of flame-retardant filler , 9 parts of water absorbent, 11 parts of polymeric isocyanate.

[0036] The preparation process is as follows: add hydroxyl-terminated star polymer and hydroxyl-terminated linear polyether into a vacuum high-speed disperser, add metered dispersant, damping filler, and flame-retardant filler while stirring, and disperse in vacuum for 30 minutes. Add a water absorbent, disperse in vacuum for 15 minutes, add a defoamer and disperse for 10 minutes, and obtain the viscous hydroxyl-terminated polymer A component. The construction process is as follows: mix the hydroxyl-terminated polymer component A and polyisocyanate B component evenly, pour it on the cleaned steel deck, push it ...

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Abstract

A solvent-free self-leveling polyurethane damping material molded at room temperature and a preparation method thereof are provided. The damping material comprises a hydroxy-terminated polymer component A and a polyisocyanate component B, and is characterized in that the hydroxy-terminated polymer component A includes, by mass, 10-30 parts of a hydroxy-terminated star polymer, 10-30 parts of hydroxy-terminated linear polyether, 5-10 parts of a water absorbing agent, 1-10 parts of a defoamer, 2-20 parts of a damping filler and 20-40 parts of a flame retardant filler. The prepared damping material can achieve one-time self-leveling construction on a deck, and is cured and molded at room temperature. The damping material has good damping performance, the material loss factor in a range of 100-1600 Hz is not less than 0.5, and the overall structure loss factor is increased by 0.4 times or above when the damping material is paved under a deck covering material. The damping material has goodflame retardant performance which reaches the UL94-V0 level, and passes a low-flame-spread test of materials used for boats. The damping material has controllable curing time and hardness.

Description

technical field [0001] The invention relates to a solvent-free self-leveling room-temperature molded polyurethane damping material and a preparation method thereof. Background technique [0002] The vibration and noise generated during the operation of the ship will not only seriously reduce the ride comfort, but also reduce the technical performance of the ship. A layer of appropriate damping material is laid between the deck covering of the cabin and the steel deck to form a constrained damping structure. When the structure undergoes bending vibration, shear deformation will occur in addition to tension and compression deformation in the damping layer. Dissipating vibration and noise energy through shear deformation can limit the transmission of vibration and noise in the air and structure, and is an effective means of vibration and noise reduction technology. [0003] There are many types of damping materials used on ship decks in my country: damping plates and pastes us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/64C08G18/48C08K13/04C08K7/24C08K7/08C08K5/101
CPCC08G18/4081C08G18/48C08G18/64C08K5/101C08K7/08C08K7/24C08K13/04
Inventor 洪玲任小逆田彩云汪聪颖
Owner SHANGHAI UNIV