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Urethane foam composite board and preparation method thereof

A polyurethane foam, composite sheet technology, applied in chemical instruments and methods, synthetic resin layered products, lamination and other directions, can solve the problems of difficulty in simultaneously satisfying damping, noise reduction, sound absorption, sound insulation and heat insulation, etc. Good thermal insulation, light weight, widening temperature and frequency bandwidth

Active Publication Date: 2012-10-17
BEIJING RADIATION APPL RES CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the design and manufacture of vehicles, ships, and aircraft, as well as environmental protection, are all developing in the direction of multi-functionality. Sound and heat insulation and other comprehensive requirements

Method used

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  • Urethane foam composite board and preparation method thereof
  • Urethane foam composite board and preparation method thereof
  • Urethane foam composite board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A polyurethane foam composite board, consisting of a panel and a core board, the two panels include a porous damping panel 1 and a smooth plane damping panel 4, the core board includes an open-cell polyurethane molding board 2 and a closed-cell polyurethane foam board 3; wherein, the smooth plane damping board Panel 4 is a solid flat panel with a self-adhesive layer on one side to form one side panel; porous damping panel 1 is a perforated panel formed by a plurality of through holes arranged in a square on the plane of another light flat damping panel as another On the side panel, the through hole diameter of the multiple through holes is 0.8mm, and the center distance of the through holes is 10mm; one side of the perforated polyurethane molding board is bonded with the self-adhesive layer of the porous damping panel to form a single-sided core board, and the single-sided core board is opened. The other side of the porous polyurethane molding board 2 and the non-adhesiv...

Embodiment 2

[0033] A polyurethane foam composite board, the preparation process steps are as follows:

[0034]a. Choose 2mm thick EPDM rubber material forming damping plate with one-side self-adhesive as the smooth flat damping panel on one side 4. Choose the damping plate of the same material as a spare as the porous damping panel on the other side 1 ;

[0035] b. Select the formed damping plate of the EPDM material in step a as the other side panel, and punch the damping plate to form a porous damping plate 1. Open holes in a square with a hole spacing of 10mm and an inner diameter of 0.8mm;

[0036] c. Other processing steps are the same as in Example 1 to prepare a polyurethane foam composite board.

[0037] After testing, the sound absorption frequency characteristics and sound insulation characteristics of polyurethane foam composite panels are: the average sound absorption coefficient of standing wave tube method and the average sound insulation value of sound intensity method in...

Embodiment 3

[0039] A polyurethane foam composite board, the preparation process steps are as follows:

[0040] a. Select a molded damping plate of polyurethane material with a thickness of 2 mm and one-sided self-adhesive as the flat damping panel 4 on one side, and select a damping plate of the same material as the porous damping panel 1 on the other side;

[0041] Composite single-sided core board is selected to form open-cell polyurethane board, and its open-cell polyurethane foam BFPU-7G: thickness is 10mm, density is 0.051g / cm 3 , the porosity is 94%, and the thermal conductivity is 0.042w / (m·k);

[0042] The closed-cell polyurethane after foaming and curing is WGY-1: the thickness is 30mm, and the density is 0.039g / cm 3 , the closed cell rate is 92%, and the thermal conductivity is 0.032w / (m k);

[0043] b. Other processing steps are the same as in Example 1 to prepare a polyurethane foam composite board.

[0044] After testing, the sound absorption frequency characteristics and ...

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Abstract

The invention discloses a urethane foam composite board comprising panels and a composite core plate, wherein the two panels comprise an optically flat damping sheet and porous damping sheets, wherein one surface of the optically flat damping sheet is provided with a non-setting adhesive layer, and the porous damping sheets are arranged in a square or a triangle shape regularly; the composite core plate forms a single-side core plate by splicing one side of a perforated urethane forming board with the porous damping sheets; the single-side core plate and the optically flat damping sheets are foamed, cured and bound to be a multi-layer structure complex by A and B constituent urethane foam composite materials in a forming die, and the urethane foam composite board is obtained after deburring the multi-layer structure complex. The invention has the integrated function of damping, noise reduction, heat and sound insulation and sound absorption, and has simple preparation method and convenient installation and use, thereby being beneficial to popularization and application.

Description

Technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polyurethane foam composite plate and a preparation method thereof. technical background [0002] As an important polymer damping material, polyurethane is widely used in military fields such as aircraft, armored vehicles and ships, as well as in vibration and noise reduction of civil vehicles and environmental protection. The advantage of polyurethane as a damping material is that a wide temperature range and high performance damping material can be obtained by adjusting the ratio of soft and hard segments. Usual polyurethane is a series of polymer systems with different hardness and softness formed by polyether or polyester polyol and hard segment polyisocyanate and diol (diamine) chain extender. The proportion of soft and hard segments is expected to obtain the best damping and mechanical properties. At the same time, foam materials made of polyurethane are widel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B3/24B32B27/40B32B37/02C08J9/04
Inventor 周成飞曾心苗翟彤郭建梅曹巍
Owner BEIJING RADIATION APPL RES CENT
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