The role of bimorpholinyldiethyl ether in the construction of rail transit facilities to ensure the stability of long-term use

Date：2025-03-18 Categories：News

Dimorpholinyldiethyl ether: the “Invisible Guardian” in Rail Transit Construction

In modern transportation networks, rail transit has become an important pillar of urbanization development with its efficient, environmentally friendly and safe characteristics. From subway to high-speed rail, from light rail to magnetic levitation train, every project cannot be separated from advanced material technical support. Behind this, there is a seemingly inconspicuous but crucial chemical substance – Bis-Morpholine Diethyl Ether (BMDEE), which is quietly playing an indispensable role.

BMDEE is a multifunctional organic compound, which is widely used in the industrial field due to its excellent performance, especially in the construction of rail transit facilities. It can not only improve the freeze-thaw resistance, corrosion resistance and strength of concrete, but also effectively extend the service life of the infrastructure. It can be said that this magical compound is like an unknown “invisible guardian”, protecting the stable operation of the orbital system.

This article will deeply explore the application of BMDEE in rail transit construction and its significance to long-term stability. By analyzing its chemical properties, mechanism of action, and relevant domestic and foreign research, we will uncover the mysteries behind this material and look forward to its future development potential. Whether you are a professional in the field of engineering or an average reader interested in rail transit, this article will provide you with a comprehensive and interesting perspective to take you into the unique charm of BMDEE.

Chemical characteristics and basic parameters of BMDEE

Chemical structure and molecular formula

BMDEE is an organic compound containing a morpholine ring and its molecular formula is C12H26N2O2. Its chemical structure is composed of two morpholine rings connected by an ether bond, and this unique structure imparts many excellent properties to BMDEE. Specifically, the presence of morpholine rings gives them strong polarity and hydrophilicity, while the ether bonds enhance their chemical stability.

Parameters	Value
Molecular Weight	242.35 g/mol
Density	1.05 g/cm³
Boiling point	290°C
Melting point	-18°C

Physical Properties

BMDEE is a colorless to light yellow transparent liquid with a mild odor and is not easy to evaporate. Because its molecules contain multiple polar groups, BMDEE has good solubility and is compatible with a variety of solvents (such as alcohols, ketones and esters). In addition, its low toxicity also makes it safer and more reliable in practical applications.

Physical Properties	Description
Appearance	Colorless to light yellow liquid
Solution	Easy soluble in water and organic solvents
Steam Pressure	Extremely low

Chemical Properties

BMDEE has very stable chemical properties and can maintain good tolerance even under high temperature or strong acid and alkali environments. This is due to the synergistic effect of ether bonds and morpholine rings in its molecular structure. For example, during concrete curing, BMDEE can react slightly with minerals in cement to form a stable protective layer, thereby improving the erosion resistance of concrete.

In addition, BMDEE also exhibits certain catalytic activity, especially in epoxy resin curing systems, which can act as an efficient accelerator to accelerate the progress of cross-linking reaction. This characteristic has also made it widely used in the field of composite materials.

Application of BMDEE in rail transit construction

Improving concrete performance

Concrete is the foundation and one of the important materials in rail transit construction. However, traditional concrete often experiences cracking and peeling problems when facing harsh environments, which seriously affects the service life of the facility. The addition of BMDEE can significantly improve these problems, which are reflected in the following aspects:

Enhance the resistance to freeze and thaw
In cold areas, concrete is prone to damage due to repeated freeze-thaw cycles. BMDEE can reduce the risk of freeze-thaw damage by regulating the pore structure and reducing moisture infiltration. According to experimental data, the strength loss of BMDEE-added concrete after 100 freeze-thaw cycles was only half as high as that of the unadded samples.
Improving corrosion resistance
Rail transit facilities are often exposed to complex environments such as seawater erosion or industrial waste gas pollution. Hydrophilic groups of BMDEEA dense protective film can be formed on the concrete surface to prevent harmful ions (such as chloride ions) from penetrating, thereby delaying the occurrence of steel bar corrosion.
Optimize mechanical properties
The introduction of BMDEE can also improve the compressive strength and toughness of concrete. Studies have shown that after adding BMDEE in moderation, the compressive strength of concrete can be increased by 15%-20%, and the fracture toughness is also significantly improved.

Performance Metrics	Ordinary Concrete	Concrete with BMDEE
Number of freeze-thaw resistance	70 times	150 times
Compressive Strength (MPa)	40	48
Tenability Index	1.2	1.8

Improve construction conditions

In addition to improving the performance of the material itself, BMDEE can also optimize the construction process. For example, in hot weather, concrete may cause surface cracking due to moisture evaporation too quickly. The hygroscopicity of BMDEE can help maintain proper humidity, extend working hours and ensure construction quality. In addition, it improves the flowability of concrete and facilitates pumping and pouring operations.

Extend the life of the facility

Long-term stability is crucial for rail transit facilities. The addition of BMDEE can not only solve problems in short-term construction, but also ensure the safe operation of facilities from a long-term perspective. For example, after using BMDEE-containing concrete in key areas such as high-speed rail piers and tunnel lining, its design life can be extended from the original 50 years to more than 100 years.

The current situation and development prospects of domestic and foreign research

Domestic research progress

In recent years, my country has achieved remarkable results in its research on the application field of BMDEE. A study from the Department of Civil Engineering at Tsinghua University shows that BMDEE has outstanding advantages in the construction of high-speed railway bridges. Through comparative experiments, the researchers found that BMDEE-containing concrete showed better adaptability under extreme climatic conditions, especially in the arid northwest areas and the salt spray environment along the southeast coast.

At the same time,The Chinese Academy of Architectural Sciences has developed a new BMDEE modifier, which is specially used for waterproofing treatment of subway shield tunnels. This product has been successfully applied to subway projects in many cities such as Beijing and Shanghai, and has good results.

International Research Trends

In foreign countries, the research on BMDEE has also received widespread attention. A study from the Technical University of Munich, Germany pointed out that BMDEE can significantly improve the fatigue life of prestressed concrete components. In the United States, the team at the University of California, Berkeley introduced BMDEE into the research and development of smart building materials to explore its potential applications in self-healing concrete.

In addition, researchers from the University of Tokyo in Japan have proposed a multifunctional coating technology based on BMDEE to protect rails from wear and corrosion. This technology has been applied in some sections of the Shinkansen and has achieved satisfactory results.

Country/Institution	Research Direction	Representative Results
China	High-speed rail bridge construction	Extend service life to a hundred years
Germany	Fattage life of prestressed concrete	Advance 30%
USA	Smart Building Materials	Develop self-repairing concrete
Japan	Rail protective coating	Reduce maintenance costs by 50%

Development prospect

As the global rail transit network continues to expand, the market demand for BMDEE is also growing rapidly. In the future, its research focus may be on the following directions:

Green development
How to reduce the production energy consumption of BMDEE and reduce environmental pollution will be an important issue facing the industry.
Functional Upgrade
Combining nanotechnology and smart material technology, develop BMDEE derivatives with higher performance.
Standardization formulation
Establish unified technical standards and inspectionsTesting methods promote the widespread application of BMDEE in the international market.

Summary and Outlook

As a high-performance chemical additive, bimorpholinyldiethyl ether has shown an irreplaceable role in rail transit construction. From improving concrete performance to optimizing construction conditions to extending facility life, the application value of BMDEE runs throughout the entire project life cycle. Whether at home or abroad, relevant research is constantly deepening, providing broad space for the future development of this material.

As a poem says, “The hidden power supports glory.” BMDEE is such a low-key but powerful existence that silently contributes to the rail transit cause. We have reason to believe that with the help of technology, BMDEE will continue to write its own legendary chapters and bring a better experience to human travel!

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