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Acoustic package material made of polyurethane-epoxy resin interpenetrating polymer network (IPN) foams and preparation method thereof

An epoxy resin and interpenetrating network technology, applied in the field of acoustic packaging materials, can solve the problems of poor low-frequency sound absorption and high low-frequency sound absorption coefficient, achieve good low-frequency sound absorption performance, improve flexibility, and solve the problem of harsh reaction conditions Effect

Active Publication Date: 2019-07-05
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The second object of the present invention is to provide a method for preparing polyurethane epoxy resin interpenetrating network foam acoustic packaging material. The problem of poor absorption of low-frequency sound by materials

Method used

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  • Acoustic package material made of polyurethane-epoxy resin interpenetrating polymer network (IPN) foams and preparation method thereof
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  • Acoustic package material made of polyurethane-epoxy resin interpenetrating polymer network (IPN) foams and preparation method thereof

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preparation example Construction

[0039] Such as figure 1 Shown, the present invention also provides a kind of preparation method of polyurethane epoxy resin interpenetrating network foam acoustic packaging material, comprises the steps:

[0040] Step 1. Put the epoxy resin in an incubator and heat it to 100 degrees Celsius to make the epoxy resin change from a highly viscous state to a thin liquid state.

[0041] Step 2, adding the polyether polyol, the first foaming agent, the second foaming agent, the first catalyst, the second catalyst and the foam stabilizer into the heated epoxy resin, and stirring to obtain the first mixture;

[0042] Wherein, the first foaming agent adopts deionized water; the second foaming agent adopts triethanolamine; the first catalyst adopts N,N-dimethyl ethyl ether (catalyst A1), and the second A triethylenediamine solution (catalyst A33) with a mass fraction of 33% was used as the catalyst; silicone oil was used as the foam stabilizer.

[0043] Step 3, adding the curing agent ...

Embodiment 1

[0051] The preparation process of polyurethane epoxy resin interpenetrating network foam acoustic material is as follows:

[0052](1) 60 grams of epoxy resin E44 are placed in an incubator and heated to 100 degrees Celsius to make epoxy resin E44 change from a viscous very large state to a thin liquid state;

[0053] (2) The epoxy resin E44 obtained in (1) is placed in a paper cup, 40 grams of polyether polyol 3630, 3 grams of foaming agent (deionized water), 3 grams of foaming agent (triethanolamine), 0.35 grams Add catalyst A1, 1 g of catalyst A33, and 1.8 g of foam stabilizer (silicone oil) into a paper cup, mix with epoxy resin E44, and stir with an electric mixer at a speed of 1200 rpm at room temperature. After stirring for 3 to 5 minutes, mixture I is obtained;

[0054] (3) Add 2 grams of curing agent (triethylenetetramine) and 30 grams of diphenylmethane diisocyanate to the mixture I obtained in (2), and then use an electric mixer to stir rapidly and fully at a speed o...

Embodiment 2

[0058] The preparation process of polyurethane epoxy resin interpenetrating network foam acoustic material is as follows:

[0059] (1) 50 grams of epoxy resin E44 are placed in an incubator and heated to 100 degrees Celsius to make epoxy resin E44 change from a viscous state to a thin liquid state;

[0060] (2) The epoxy resin E44 obtained in (1) is placed in a paper cup, 50 grams of polyether polyol 3630, 2.5 grams of foaming agent (deionized water), 2.5 grams of foaming agent (triethanolamine), 0.5 grams Catalyst A1, 2 grams of catalyst A33, and 1.8 grams of foam stabilizer (silicone oil) were added to a paper cup, mixed with epoxy resin E44, stirred at room temperature with an electric mixer at a speed of 1200 rpm, and stirred for 3 to 5 minutes to obtain mixture I;

[0061] (3) Add 1 gram of curing agent (triethylenetetramine) and 35 grams of diphenylmethane diisocyanate into the mixture I obtained in (2), and then use an electric mixer to stir rapidly and fully at a speed...

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Abstract

The invention discloses an acoustic package material made of polyurethane-epoxy resin interpenetrating polymer network (IPN) foams. The acoustic package material is prepared through modifying polyurethane by epoxy resin. Compared with a conventional polyurethane foam material, the provided acoustic package material has a better performance on absorbing low frequency voice. The invention also discloses a preparation method of the acoustic package material. The preparation method comprises following steps: step one, heating epoxy resin to 100 DEG C; step two, adding polyether polyol, a first foaming agent, a second foaming agent, a first catalyst, a second catalyst, and a foam stabilizer into heated epoxy resin, and stirring to obtain a first mixture; step three, adding a curing agent and diphenyl methane diisocyanate into the first mixture, and stirring to obtain a second mixture; and step four, pouring the second mixture into a die, closing the die, carrying out foaming, taking out thesecond mixture, and curing to obtain the acoustic package material.

Description

technical field [0001] The invention belongs to the technical field of acoustic packaging materials in the field of sound-absorbing material design, and in particular relates to a polyurethane epoxy resin interpenetrating network foam acoustic packaging material and a preparation method thereof. Background technique [0002] With the vigorous development of various departments such as modern industry, construction industry and transportation industry, noise pollution has seriously affected people's health, work and life. Long-term exposure to noise can damage people's physical and mental health. With the continuous improvement of people's living standards, the requirements for cars are gradually changing from basic transportation tools to more comfortable passenger environments. Automakers also employ a number of methods to reduce the overall noise and vibration levels of vehicles to meet customer expectations. [0003] Automotive acoustic packages are often used to reduce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/08C08G18/48C08G18/76C08G18/58C08G101/00
CPCC08G18/4045C08G18/48C08G18/58C08G18/7671C08J9/0061C08J9/08C08J2203/02C08J2203/18C08J2205/06C08J2375/08C08J2483/04C08G2110/0008
Inventor 陈书明朱彤彤梁杰
Owner JILIN UNIV
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