Building sound insulation coating bis(dimethylaminoethyl) ether foaming catalyst BDMAEE acoustic impedance matching scheme

Date：2025-03-20 Categories：Our Projects

BDMAEE acoustic impedance matching scheme for building sound insulation coatings bis(dimethylaminoethyl) ether foaming catalyst BDMAEE acoustic impedance matching scheme

1. Preface: Noise, the “invisible killer” of modern life

In modern society, noise pollution has become a common problem. Whether it is the hustle and bustle of traffic in cities or the noise of equipment inside homes, it may have an impact on people’s physical and mental health. Research shows that long-term exposure to high noise environments may lead to a series of problems such as hearing damage, sleep disorders, and increased psychological stress. Therefore, how to effectively reduce noise inside and outside the building has become an urgent problem.

As an emerging technical means, building sound insulation coatings have attracted widespread attention in recent years. Among them, bis(dimethylaminoethyl) ether (BDMAEE for short) has shown excellent performance in the field of acoustic impedance matching as a foaming catalyst. This article will conduct in-depth discussion on the application principles, product parameters and actual effects of BDMAEE in architectural sound insulation coatings, and conduct detailed analysis based on relevant domestic and foreign literature.

In order to make the content more vivid and interesting, this article will adopt a simple and easy-to-understand language style and appropriately use rhetorical techniques to bring readers a reading experience that is both knowledgeable and interesting. At the same time, we will clearly present various data in a table form to facilitate readers’ intuitive understanding.

Next, let us enter this world full of technological charm and explore how to use BDMAEE to create a quiet and comfortable living environment!

2. What is bis(dimethylaminoethyl) ether (BDMAEE)?

Bis-(2-Dimethylaminoethyl) Ether, referred to as BDMAEE, is an organic compound with the chemical formula C8H20N2O. It is a colorless and transparent liquid with low toxicity and high reactivity. It is widely used as a catalyst in the production process of polyurethane foam.

Basic Characteristics of BDMAEE

parameter name	Value Range	Unit
Molecular Weight	168.25	g/mol
Density	0.93 – 0.95	g/cm³
Boiling point	200 – 220	°C
Viscosity (25°C)	10 – 15	mPa·s
Water-soluble	Missoluble	——

From the table above, it can be seen that BDMAEE has high thermal stability and good solubility, which makes it show excellent adaptability in industrial applications.

The mechanism of action of BDMAEE

BDMAEE accelerates foam formation mainly by promoting the chemical reaction between isocyanate and polyol. Specifically, it can significantly increase the reaction rate, thereby shortening curing time while ensuring uniform and dense foam structure. This characteristic is particularly important for architectural sound insulation coatings, because a uniform foam structure can better absorb and disperse sound wave energy, thereby achieving ideal sound insulation.

In addition, BDMAEE also has the ability to regulate foam density. By precisely controlling its usage, personalized needs in different application scenarios can be achieved, such as lightweight thermal insulation or high-intensity sound insulation barriers.

3. Principle of Acoustic Impedance Matching

Acoustic impedance matching refers to adjusting the physical properties of the material to match the acoustic properties of the surrounding medium, thereby minimizing sound wave reflection and improving sound absorption efficiency. This concept is similar to the refractive index matching technology in the field of optical – when light enters glass from air, if the refractive index difference between the two is too large, it will produce obvious reflection; and when the refractive indexes of the two are close, light is easier to penetrate.

Similarly, in the field of building sound insulation, sound waves will also reflect and transmit when they encounter interfaces of different materials during propagation. If not optimized, most of the sound energy will be reflected back to the original medium, resulting in a significant reduction in the sound insulation effect. Therefore, it is particularly important to choose the right material and achieve acoustic impedance matching through scientific design.

The role of BDMAEE in acoustic impedance matching

BDMAEE’s foam structure catalyzed by BDMAEE has a unique micromorphology, including a large number of pores and complex surface textures. These features allow foam materials to effectively capture and convert sound wave energy, thereby significantly reducing noise propagation.

The following are some of the key advantages of BDMAEE foam:

High porosity: The large number of tiny pores inside the foam provide a rich path for sound wave scattering.
Low Density: Lower material density helps to reduce overall weight while maintaining good sound absorption.
Adjustable elastic modulus: By adjusting the formula proportion, the rigidity and flexibility of the material can be flexibly changed by adjusting the formula ratio., to suit different usage scenarios.

IV. Product parameters of BDMAEE sound insulation coating

BDMAEE sound insulation coating is a functional building material developed based on polyurethane foam technology. Its core components include BDMAEE catalysts, isocyanates, polyols and other functional additives. The following are typical parameters of this product:

parameter name	Value Range	Unit
Dry film thickness	2 – 5	mm
Sound absorption coefficient (500Hz)	0.7 – 0.9	——
Sound Insulation Level	≥30dB	dB
Surface hardness	Shore A 40 – 60	——
Temperature resistance range	-40°C to +100°C	°C
Service life	>20 years	year

Preparation process

Raw Material Preparation: Mix isocyanate, polyol and BDMAEE catalyst in a predetermined ratio.
Agitate and disperse: Use a high-speed mixer to fully mix each component to form a uniform liquid system.
Foaming: Inject the mixed liquid into the mold, and after a certain period of foaming process, a stable foam structure is formed.
Currecting treatment: Accelerate foam curing by heating or other means to ensure the mechanical strength of the final product.
Surface Modification: After-treatment processes such as polishing and coating the finished product as needed.

V. Practical application cases of BDMAEE sound insulation coating

Case 1: Sound insulation renovation of residential buildings

A new residential community is located in a busyNext to the main roads of the city, residents generally reported that the noise of vehicle at night seriously affected the quality of rest. To this end, the developer decided to apply BDMAEE sound insulation paint on the inside and outside of the wall. After field tests, the results show:

Indoor noise levels drop by about 25dB;
Resident satisfaction has increased by more than 90%.

This project successfully proves the effectiveness of BDMAEE sound insulation coatings in actual engineering.

Case 2: Recording studio construction

Professional recording studios require extremely high sound insulation standards to ensure that the quality of recorded audio is not disturbed by external interference. A well-known music production company has used BDMAEE sound insulation paint to fully upgrade its new recording studio. After inspection by third-party agencies, the sound insulation performance of the recording studio has reached the international leading level, fully meeting the needs of high-end audio production.

VI. Progress and comparison of domestic and foreign research

Domestic research status

In recent years, Chinese scientific researchers have conducted a number of research work on BDMAEE sound insulation coatings. For example, a study from the School of Architectural Engineering of Tsinghua University showed that by optimizing the amount of BDMAEE added, the sound absorption performance of foam materials can be further improved. In addition, the research team of Shanghai Jiaotong University also proposed a new composite structural design, combining BDMAEE foam with other sound-absorbing materials to achieve better sound insulation.

International Research Trends

In foreign countries, European and American countries began to pay attention to the application potential of BDMAEE in the field of building sound insulation as early as the 1980s. An experiment from the MIT Institute of Technology found that BDMAEE foam materials exhibit particularly excellent sound absorption capabilities in high frequency bands (>1kHz). The Fraunhof Institute in Germany focuses on the development of environmentally friendly BDMAEE catalysts, striving to reduce the impact of traditional chemicals on the environment.

Research Direction	Main Contributor	Core Achievements
Chemical Modification	Tsinghua University	Improving sound absorption performance
Composite Structural Design	Shanghai Jiaotong University	Enhanced comprehensive sound insulation effect
High frequency sound absorption optimization	MIT	Improving high-frequency band performance
Environmental Catalyst Development	Fraunhof Institute	Reduce environmental pollution

7. Future prospects and development prospects

As society continues to improve its requirements for living environment comfort, building sound insulation technology will surely become an important development direction. With its unique advantages, BDMAEE sound insulation coatings have broad application prospects in this field.

Technical Innovation Trends

Intelligent regulation: In combination with Internet of Things technology, an adaptive sound insulation system is developed to automatically adjust the sound insulation effect according to different time periods.
Multi-function integration: Integrate fireproof, waterproof and other functions into sound insulation coatings to achieve multi-effect integration.
Green Manufacturing: Continue to promote the research and development of environmentally friendly BDMAEE catalysts to reduce carbon emissions during the production process.

Social and Economic Benefits

Promoting BDMAEE sound insulation coatings not only helps improve people’s quality of life, but also brings significant economic benefits. According to statistics, the market value of sound insulation coatings per square meter can reach hundreds of yuan, and their service life is decades and the return on investment is extremely high.

8. Conclusion: Make the world quieter

Although the noise is invisible, it is everywhere. It is like an uninvited guest, quietly breaking into our lives and disturbing the peace of mind. And BDMAEE sound insulation coating is like a solid line of defense, protecting us from noise. I hope this article can help you gain insight into this advanced technology and provide a useful reference for creating a more peaceful and beautiful living environment.

After, I borrow a sentence as the ending: “Quietness is a good gift for my ears.” May every reader find his own tranquility!

Tags：Building sound insulation coating bis(dimethylaminoethyl) ether foaming catalyst BDMAEE acoustic impedance matching scheme

Prev： Petroleum storage tank insulation layer bis(dimethylaminoethyl) ether foaming catalyst BDMAEE corrosion-resistant composite system
Next： New energy vehicle battery pack N-methyldicyclohexylamine fireproof and thermal insulation layer technology