Corn oil-based polyurethane porous material and preparation method thereof

A porous material and corn oil technology, applied in the field of automotive acoustic materials, can solve problems such as heavy pollution and unsatisfactory low-frequency sound absorption effects

Active Publication Date: 2022-01-25
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the polyurethane porous material used in automobiles has a good sound absorption effect in the high frequency range, but the low frequency sound absorption effect is not ideal, and the raw materials for its preparation are all extracted from fossil raw materials, which pollutes the environment heavily. Therefore, it is necessary to use other environmentally friendly raw materials to replace petrochemical raw materials to prepare polyurethane porous materials with high environmental performance and high and low frequency sound absorption performance.

Method used

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  • Corn oil-based polyurethane porous material and preparation method thereof
  • Corn oil-based polyurethane porous material and preparation method thereof
  • Corn oil-based polyurethane porous material and preparation method thereof

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preparation example Construction

[0039] refer to figure 1 , a method for preparing a corn oil-based polyurethane porous material, comprising the steps of:

[0040] Step 1. Take the following raw materials according to the parts by mass:

[0041] Corn oil polyol: 40∽50 parts, polyether polyol: 50∽60 parts, silicone oil: 0.6 parts, triethanolamine: 2.5 parts, catalyst A1: 0.06∽0.1 parts, catalyst A33: 1.0 parts, deionized water: 2.5 parts Parts, isocyanate: 33∽38 parts;

[0042] Wherein, the hydroxyl value scope of described corn oil polyol is 190~210mgKOH / g;

[0043] Step 2. Put all the raw materials except isocyanate into the container, and use a stirring device to stir at a speed of 1000-1300 rpm for 1 minute to obtain a homogeneous mixture 1, and let it stand for 3-5 minutes;

[0044] Step 3, adding isocyanate and stirring at a rotation speed of 1100-1300 rpm to obtain a mixture 2;

[0045] When the isocyanate is added and stirred, the material begins to undergo a chemical reaction with an exothermic re...

Embodiment 1

[0051] Step 1, take the following raw materials according to the mass fraction:

[0052] Corn oil polyol: 40 parts, polyether polyol: 60 parts, silicone oil: 0.6 parts, triethanolamine: 2.5 parts, A1: 0.07 parts, A33: 1.0 parts, deionized water: 2.5 parts;

[0053] Isocyanate: 35 parts.

[0054] Step 2, put all the raw materials except isocyanate into the container, and use a stirring device to stir at a speed of 1000rpm for 1 minute to obtain a homogeneous mixture 1, and let it stand for 3 minutes;

[0055] Step 3: Add isocyanate and stir evenly at a rotation speed of 1300 rpm with heating to obtain mixture 2;

[0056] Step 4. Pour the mixture 2 into the mold for free foaming, and then put it into a 50°C incubator to cure for 2 hours;

[0057] Step 5, take it out from the incubator and cool to room temperature, then remove the surface crust to obtain a corn oil-based polyurethane porous material.

Embodiment 2

[0059] Step 1, take the following raw materials according to the mass fraction:

[0060] Corn oil polyol: 45 parts, polyether polyol: 55 parts, silicone oil: 0.6 parts, triethanolamine: 2.5 parts, A1: 0.07 parts, A33: 1.0 parts, deionized water: 2.5 parts;

[0061] Isocyanate: 33 parts.

[0062] Step 2. Put all raw materials except isocyanate into the container, and use a stirring device to stir at a speed of 1300 rpm for 1 minute to obtain a homogeneous mixture 1, and let it stand for 3 minutes;

[0063] Step 3, add isocyanate, and stir at a speed of 1200rpm evenly and accompanied by heat generation, the mixture 2 is obtained;

[0064] Step 4. Pour the mixture 2 into the mold for free foaming, and then put it into a 50°C incubator to cure for 2 hours;

[0065] Step 5, take it out from the incubator and cool to room temperature, then remove the surface crust to obtain a corn oil-based polyurethane porous material.

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Abstract

The invention belongs to the technical field of acoustic materials for automobiles, and particularly relates to a corn oil-based polyurethane porous material and a preparation method thereof. The material is prepared from the following components in parts by mass: corn oil polyol, polyether polyol, isocyanate, 2.5 parts of deionized water, 2.5 parts of triethanolamine, A1, 1.0 part of A33 and 0.6 part of silicone oil. The corn oil-based polyurethane porous material is designed and developed, the corn oil polyhydric alcohol is used for replacing petroleum-based polyhydric alcohol to prepare the polyurethane sound absorption material, and the corn oil-based polyurethane porous material has better environment friendliness, better low-frequency sound absorption effect and better sound insulation performance. Meanwhile, the invention also provides a preparation method of the corn oil-based polyurethane porous material.

Description

technical field [0001] The invention belongs to the technical field of acoustic materials for automobiles, in particular to a corn oil-based polyurethane porous material and a preparation method thereof. Background technique [0002] With the rapid development of transportation and industrial activities, noise pollution has become one of the major environmental problems faced by human society. Cars are an indispensable means of transportation in people's lives, and people have higher and higher requirements for the comfort and safety of cars. As one of the three major pollution sources, noise pollution not only affects the comfort of the car but also affects the health of drivers and passengers, so it is necessary to take necessary measures to reduce the noise inside the car. [0003] At present, the common measure of noise reduction in the car is to use acoustic packaging materials. The mechanism is to consume sound energy through the vibration and friction of the air, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/36C08G101/00
CPCC08G18/36C08G2101/00C08G2110/0083
Inventor 陈书明曾磊蔡燿宇张章李慧娟
Owner JILIN UNIV
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