A hybrid plant-based polyurethane porous material impregnated with carbon nanotubes and graphene oxide and its preparation method

A technology of carbon nanotubes and mixed plants, which is applied in the field of automotive acoustic materials, can solve problems such as poor degradability and environmental pollution, and achieve the effects of easy degradation, reduced environmental pollution, and guaranteed drying effect

Active Publication Date: 2022-04-12
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, polyurethane porous materials for vehicles are mostly made of petroleum polyols, which are poorly degradable after being discarded and easily cause environmental pollution. With the increasing shortage of petroleum resources, it has become a trend to use plant-based polyols to replace petrochemical raw materials to prepare polyurethanes.

Method used

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  • A hybrid plant-based polyurethane porous material impregnated with carbon nanotubes and graphene oxide and its preparation method
  • A hybrid plant-based polyurethane porous material impregnated with carbon nanotubes and graphene oxide and its preparation method
  • A hybrid plant-based polyurethane porous material impregnated with carbon nanotubes and graphene oxide and its preparation method

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Experimental program
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preparation example Construction

[0033] Such as figure 1 Shown, the preparation method step of the mixed plant-based polyurethane porous material based on carbon nanotube and graphene oxide impregnation is as follows:

[0034] Step 1, take the following raw materials according to the mass fraction:

[0035] Castor oil: 34-36 parts, rosin ester polyol 9-11 parts, polyether polyol: 68-72 parts, carbon nanotube: 3 parts, foam stabilizer: 0.6 parts, triethanolamine: 2.5 parts, catalyst A1: 0.08 parts, catalyst A33: 1.0 parts, deionized water: 2.5 parts;

[0036] Step 2. Add the raw materials into the stirring device, first stir at a very low speed n1=30rpm to prevent the carbon nanotubes from flying, and after the carbon nanotubes are fully mixed, stir at a speed n2=1200rpm to prepare a mixture A, and Stand for 1 to 2 minutes;

[0037] Step 3, adding 34 to 36 parts of polymerized MDI, and stirring at a speed of n3=1600rpm to obtain a mixture B;

[0038] Step 4. Pour the mixture B into the mold for free foamin...

Embodiment 1

[0044] Take the following raw materials by mass fraction:

[0045] Castor oil polyol: 35.124 parts, rosin ester polyol 10.607 parts, polyether polyol: 70.446 parts, foam stabilizer: 0.6 parts, triethanolamine: 2.5 parts, catalyst A1: 0.08 parts, catalyst A33: 1.0 parts, deionized Water: 2.5 parts; wherein, the hydroxyl value range of the castor oil polyol is 160~200mg KOH / g;

[0046] Step 2, adding the raw materials into a stirring device, stirring at a speed of n2=1200rpm to prepare a mixture A, and standing for 1 to 2 minutes;

[0047] Step 3, add 34 parts of polymerized MDI, and stir at the rotation speed n3=1600rpm to obtain the mixture B;

[0048] Step 4. Pour the mixture B into the mold for free foaming, put it into the incubator for curing for 12 hours, and the temperature is 50°C;

[0049] Step 5. After standing at room temperature, the surface crust is removed to obtain a mixed plant-based polyurethane porous material.

Embodiment 2

[0051] Take the following raw materials by mass fraction:

[0052] Castor oil polyol: 35.292 parts, rosin ester polyol 10.012 parts, polyether polyol: 69.921 parts, foam stabilizer: 0.6 parts, triethanolamine: 2.5 parts, catalyst A1: 0.08 parts, catalyst A33: 1.0 parts, deionized Water: 2.5 parts; wherein, the hydroxyl value range of the castor oil polyol is 160~200mg KOH / g;

[0053] Step 2, adding the raw materials into a stirring device, stirring at a speed of n2=1200rpm to prepare a mixture A, and standing for 1 to 2 minutes;

[0054] Step 3, add 34 parts of polymerized MDI, and stir at the rotation speed n3=1600rpm to obtain the mixture B;

[0055] Step 4. Pour the mixture B into the mold for free foaming, put it into the incubator for curing for 12 hours, and the temperature is 50°C;

[0056] Step 5. After placing at room temperature, remove the surface crust to obtain a mixed plant-based polyurethane porous material;

[0057] Step 6. Mix 2 parts of graphene oxide with...

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Abstract

The invention discloses a mixed plant-based polyurethane porous material impregnated with carbon nanotubes and graphene oxide. The polyurethane sound-absorbing material is prepared by using castor oil polyol and rosin ester polyol instead of petroleum-based polyol. The material has a wide range of sources and is easy to degrade. Environmental pollution is reduced, and the addition of carbon nanotubes increases the weight of the material under the same volume, which further enhances the high-frequency sound absorption effect of the material. The impregnation of graphene oxide increases the complexity of the material inside, making it have better mid-low frequency Sound absorption and compression properties. At the same time, the present invention also provides a method for preparing a mixed plant-based polyurethane porous material impregnated with carbon nanotubes and graphene oxide. Different stirring speeds are used in the material preparation process to ensure that the materials are evenly mixed, and the heat preservation treatment and drying treatment are given. The appropriate temperature value at the time and the effective temperature control not only ensure the foaming effect and drying effect, but also ensure the sound absorption and compression properties of polyurethane materials.

Description

technical field [0001] The invention relates to the field of acoustic materials for automobiles, in particular to a hybrid plant-based polyurethane porous material impregnated with carbon nanotubes and graphene oxide, and a hybrid plant-based polyurethane porous material impregnated with carbon nanotubes and graphene oxide Preparation. Background technique [0002] With the rapid development of industry and transportation, noise pollution has become one of the four major pollution sources in the world today, which has a great impact on people's working and living environment. As one of the main sources of noise pollution, automobile noise not only endangers the physical and mental health of drivers and passengers, but also affects the service life and structural safety of instruments and equipment in the vehicle. [0003] At present, the common measure of noise reduction in the car is to use acoustic packaging materials. The mechanism is that after sound waves enter, the vi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/40C08J9/02C08L75/08C08K3/04C08G18/64C08G18/48
CPCC08J9/40C08J9/02C08J9/0066C08G18/64C08G18/48C08J2375/08
Inventor 程亚兵徐泽辉陈书明杨泽宇曹鹏宇葛平玉朱凯宏李超
Owner JILIN UNIV
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