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A kind of EPDM rubber polyurethane composite acoustic packaging material and preparation method thereof

A technology of EPDM rubber and packaging materials, which is applied in the field of acoustic materials, can solve problems such as poor low-frequency sound absorption performance, and achieve the effects of improving low-frequency sound absorption characteristics, low cost, and reducing environmental pollution

Active Publication Date: 2020-11-03
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a composite acoustic material prepared by adding different functional particles, and improves the low-frequency sound-absorbing performance of the polyurethane foam without changing the high-frequency sound-absorbing performance of the EPDM polyurethane composite acoustic packaging The material and its preparation method solve the problem of poor low-frequency sound absorption performance in existing acoustic packaging materials, and at the same time improve the environmental problems caused by waste rubber

Method used

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  • A kind of EPDM rubber polyurethane composite acoustic packaging material and preparation method thereof
  • A kind of EPDM rubber polyurethane composite acoustic packaging material and preparation method thereof
  • A kind of EPDM rubber polyurethane composite acoustic packaging material and preparation method thereof

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preparation example Construction

[0031] A preparation method of EPDM polyurethane composite acoustic packaging material, said method comprising the following steps:

[0032] refer to figure 1 , Step 1. Mix 60g of polyether polyol 330N, 40g of polyether polyol 3630, 3g of deionized water, 3g of triethanolamine, 0.05g of catalyst A1, 1g of catalyst A33 and 1.8g of silicone oil into a paper cup, at 25°C Stir with an electric stirrer at a speed of 2000rpm for 2 minutes to obtain mixture I;

[0033] Step 2. Add 2g or 4g or 6g or 8g of EPDM rubber with a hardness of 65HA or 4g of EPDM rubber with a hardness of 70HA or 4g of EPDM rubber with a hardness of 85HA into the mixture I obtained in step 1, and use it again Stir with an electric mixer for 2 minutes to obtain a homogeneous mixture II;

[0034] Step 3: Add 30 g of 4,4'-diphenylmethane diisocyanate to the mixture II obtained in step 2, and then use an electric stirrer to stir evenly to obtain mixture III;

[0035] Step 4. Pour the mixture III obtained in ste...

Embodiment 1

[0038] A kind of EPDM rubber polyurethane composite acoustic packaging material, said material is according to the following proportioning group:

[0039]

[0040] 2g or 4g or 6g or 8g of EPDM rubber with a hardness of 65HA.

[0041] A preparation method of EPDM polyurethane composite acoustic packaging material, said method comprising the following steps:

[0042] Step 1. Formula with exactly the same components and contents in 4 parts: 60g polyether polyol 330N, 40g polyether polyol 3630, 3g deionized water, 3g triethanolamine, 0.05g catalyst A1, 1g catalyst A33, 1.8g silicone oil Each part of the mixture was mixed separately and added to 4 identical paper cups, and stirred with an electric stirrer at 2000rpm for 2 minutes at 20°C to obtain 4 identical mixtures I;

[0043] Step 2. Add 2g, 4g, 6g, and 8g of EPDM rubber with a hardness of 65HA into the 4 paper cups in Step 1, and stir again with an electric stirrer to obtain 4 different mixtures II;

[0044] Step 3. Add 4...

Embodiment 2

[0050] A kind of EPDM rubber polyurethane composite acoustic packaging material, said material is according to the following proportioning group:

[0051]

[0052] 4g of EPDM rubber with a hardness of 65HA or 4g of EPDM rubber with a hardness of 70HA or 4g of EPDM rubber with a hardness of 85HA.

[0053] A preparation method of EPDM polyurethane composite acoustic packaging material, said method comprising the following steps:

[0054] Step 1, 3 parts of the formula with exactly the same components and contents: 60g polyether polyol 330N, 40g polyether polyol 3630, 3g deionized water, 3g triethanolamine, 0.05g catalyst A1, 1g catalyst A33, 1.8g medium Mix each portion of the mixture into 3 identical paper cups, and stir with an electric stirrer at 2000 rpm for 2 minutes at 20°C to obtain 3 identical mixtures I;

[0055] Step 2. Add 4 g of EPDM rubbers with different hardnesses of 65HA, 70HA and 85HA to the 3 mixtures I obtained in step 1, and stir again with an electric st...

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Abstract

The invention relates to an acoustic material, and in particular, relates to an ethylene-propylene-diene monomer polyurethane composite acoustic packaging material and a preparation method thereof. The material includes 60 g of polyether polyol 330N, 40 g of polyether polyol 3630, 30 g of 4,4-diphenyl methane diisocyanate, 3 g of deionized water, 3 g of triethanolamine, 0.05 g of a catalyst A1, 1 g of a catalyst A33, 1.8 g of a foam stabilizer, and 2 g or 4 g or 6 g or 8 g of an ethylene-propylene-diene monomer with the hardness of 65 HA or 4 g of an ethylene-propylene-diene monomer with the hardness of 70 HA or 4 g of an ethylene-propylene-diene monomer with the hardness of 85 HA. The invention provides the composite acoustic material prepared by adding different functional particles, and the ethylene-propylene-diene monomer polyurethane composite acoustic packaging material having low-frequency sound absorption performance improved in the premise without changing the high-frequency sound absorption performance of polyurethane foams, and the preparation method of the composite acoustic packaging material; the problem that a conventional acoustic packaging material has poor low-frequency sound absorption performance is solved. At the same time, the waste can be reused, and the environmental problems brought by waste rubber are solved.

Description

technical field [0001] The invention relates to an acoustic material, in particular to an EPDM polyurethane composite acoustic packaging material and a preparation method thereof. Background technique [0002] With the continuous progress of society and the continuous improvement of living standards, people have higher and higher requirements for the comfort and safety of cars, and the noise in the car not only affects the comfort of cars but also affects the health of drivers and passengers, so it is necessary to take measures Necessary measures to reduce interior noise. [0003] At present, the most effective and fundamental way to reduce noise inside the car is to use acoustic packaging materials. Among them, the acoustic packaging material will affect the acoustic characteristics of the car, and consume sound energy through the vibration and friction of the air, which can not only reduce the noise in the car, but also adjust the sound quality in the car to meet people's...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/08C08L23/16C08G18/48C08G18/61C08G18/76C08J9/12
CPCC08G18/4816C08G18/61C08G18/7671C08J9/125C08J2203/10C08L75/08C08L2203/14C08G2110/0083C08L23/16
Inventor 陈书明朱文波朱彤彤王业斌王登峰
Owner JILIN UNIV
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