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Sound-absorbing damping foam core sandwich composite material, and manufacturing method thereof

A composite material and foam technology, which is applied in the field of polymer-based lightweight composite materials and foam sandwich composite materials, can solve problems that are not related to temperature resistance, flame retardancy, low smoke, low toxicity, sound absorption, damping, and vibration reduction. , Noise-reducing polyurethane-polyimide foam sandwich composite materials, etc.

Inactive Publication Date: 2017-07-14
QINGDAO ADVANCED MARINE MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] None of the above patents involves the preparation method of polyurethane-polyimide foam sandwich composite material with integrated functions of temperature resistance, flame retardancy, low smoke, low toxicity, sound absorption, damping, vibration reduction and noise reduction

Method used

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  • Sound-absorbing damping foam core sandwich composite material, and manufacturing method thereof
  • Sound-absorbing damping foam core sandwich composite material, and manufacturing method thereof
  • Sound-absorbing damping foam core sandwich composite material, and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0049] The present embodiment provides a kind of preparation of open-cell polyurethane-polyimide foam:

[0050] Put 170 grams of 1,2,4,5 pyromellitic dianhydride (PMDA) and 240 grams of dimethylformamide into a 1000ml three-neck flask equipped with a stirrer, a thermometer and a reflux condenser, stir well and slowly raise the temperature When the solid particles of 1,2,4,5 pyromellitic dianhydride are completely dissolved at 90-100°C, add 25 grams of 4,4, diaminodiphenyl ether and raise the temperature to 120°C to react to a clear solution. Cool down to 65°C and put in 25 grams of anhydrous methanol, carry out esterification reaction to a reddish-brown transparent solution, cool down to below 60°C, add 2.5 grams of isoquinoline, stir evenly, and prepare a precursor solution.

[0051] Weigh 100 grams of the above precursor solution and add 12 grams of blowing agent deionized water, 1.5 grams of triethylenediamine, 0.5 grams of bis(dimethylaminoethyl) ether catalyst, 30 grams o...

Embodiment 2

[0057] The present embodiment provides a kind of preparation of open-cell polyurethane-polyimide foam:

[0058] In the 1000ml there-necked flask equipped with stirrer, thermometer and reflux condenser, drop into 150 grams of 3,3,,4,4,, benzophenone tetracarboxylic dianhydride (BTDA) and 210 grams of dimethylformamide, Stir well and slowly raise the temperature to 100-110°C. After the solid particles of 3,3,,,4,4,, benzophenone tetracarboxylic dianhydride (BTDA) are completely dissolved, add 25 grams of 4,4,, diaminodiphenyl Ether (4,4,,-ODA) was heated up to 120°C and reacted to a clear solution solution, cooled to 65°C and put into 38 grams of anhydrous methanol for esterification reaction, and the solution was clear and transparent, and the temperature was lowered to below 60°C. Add 2.5 g of isoquinoline, and stir the solution evenly to obtain a light yellow transparent precursor solution.

[0059] Weigh 100 grams of the above precursor solution and add 12 grams of deionize...

Embodiment 3

[0064] The present embodiment provides a kind of preparation of open-cell polyurethane-polyimide foam:

[0065] Put 170 grams of 1,2,4,5 pyromellitic dianhydride (PMDA) and 260 grams of dimethylformamide into a 1000ml three-neck flask equipped with a stirrer, a thermometer and a reflux condenser, stir well and slowly raise the temperature To 90 ~ 100 ℃, when the solid particles of 1,2,4,5 pyromellitic dianhydride are all dissolved and the solution becomes clear, drop the temperature to 65 ℃ and put in 25 grams of anhydrous methanol to carry out esterification reaction. Clear and transparent, cooling down to below 60°C. Add 2.5 grams of isoquinoline, 30 grams of polyoxypropylene diamine (D-2000). Stir the above solution to a constant temperature to obtain a brown-red transparent viscous precursor solution.

[0066] Weigh 100 grams of the above precursor solution and add 12 grams of foaming agent deionized water, 1.5 grams of triethylenediamine, 0.5 grams of bis(dimethylaminoe...

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Abstract

The invention discloses a sound-absorbing damping foam core sandwich composite material, and a manufacturing method thereof. The sound-absorbing damping foam core sandwich composite material is composed of a core material, a surface material, and a damping coating layer; the core material is an open-cell polyurethane-polyimide foam board; the surface material is a flame-retardant glass fibre cloth coated with a waterproof polyurethane inner cabin coating; and the damping coating layer is polyether polyurethane elastomer. When the frequency ranges from 250 to 6000Hz, and the plate thickness is controlled to be 25mm, the average sound absorbing factor ranges from 0.42 to 0.46, the limit oxygen index is 32 or higher, the smoke density Dm is 50 or lower, the free damping loss factor is 1.0 or higher, and a foam material layer is destroyed when bonding strength N / 25mm.

Description

technical field [0001] The invention relates to a foam sandwich composite material, belonging to the category of polymer-based lightweight composite materials, in particular to a polyurethane-polyimide foam sandwich sound-absorbing and damping material with a composite structure and a manufacturing method thereof. Background technique [0002] Foam sandwich materials have been used as composite materials in the 1940s. Polyurethane foam sandwich panels, which have light weight, high specific strength, and good impact resistance and energy absorption properties, have been widely used in the building materials industry. Glass wool sandwich panels have good sound absorption, sound insulation, temperature resistance, and flame retardancy, and are widely used in sound insulation and sound absorption occasions for buildings, ships, and offshore engineering platforms. Polyurethane-polyimide foam material has good sound absorption and sound insulation properties, temperature resistan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/40B32B27/18B32B27/20B32B27/28B32B27/08B32B33/00C08L79/08C08L75/08C08J9/12C08J9/14C08G73/10C08G18/66C08G18/48C08G18/32
CPCB32B27/40B32B27/08B32B27/18B32B27/20B32B27/281B32B33/00B32B2307/102B32B2307/30B32B2307/3065B32B2307/56B32B2307/72C08G18/3228C08G18/48C08G18/6685C08G73/1071C08G73/1082C08G2101/00C08J9/125C08J9/142C08J2203/10C08J2203/12C08J2379/08C08J2475/08C08L79/08C08L2201/02C08L2201/08C08L2203/14
Inventor 刘连河张树华王馨晨付攀李国英张茂伟
Owner QINGDAO ADVANCED MARINE MATERIAL TECH
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