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Application of trimethylamine ethylpiperazine in polyurethane elastomers

admin 3月 11th, 2025 News

The application of trimethylamine ethylpiperazine in polyurethane elastomers

1. Introduction

Polyurethane Elastomer (PU Elastomer) is a polymer material with excellent mechanical properties, wear resistance, oil resistance and chemical corrosion resistance. Due to its unique properties, polyurethane elastomers are widely used in automobiles, construction, electronics, medical and other fields. Trimethylamine Ethyl Piperazine (TMAEP) plays a key role in the synthesis and application of polyurethane elastomers as an important crosslinking agent and chain extender. This article will introduce in detail the application of TMAEP in polyurethane elastomers, including its chemical properties, mechanism of action, product parameters, application examples, etc.

2. Chemical properties of trimethylamine ethylpiperazine

2.1 Chemical structure

The chemical structure of trimethylamine ethylpiperazine is as follows:

 CH3
        |
CH3-N-CH2-CH2-N-CH2-CH2-N-CH3
        | |
       CH3 CH2
               |
              CH2
               |
              N

TMAEP is an organic compound containing three methyl groups and one ethylpiperazine group. Its molecular structure contains multiple reactive nitrogen atoms that can react with isocyanate groups (-NCO) to form stable carbamate bonds.

2.2 Physical Properties

Properties	Value/Description
Molecular Weight	172.28 g/mol
Appearance	Colorless to light yellow liquid
Density	0.92 g/cm³
Boiling point	220-230°C
Flashpoint	110°C
Solution	Easy soluble in water, alcohols, and ethers

2.3 Chemical Properties

TMAEP has the following chemical properties:

Basic: The nitrogen atoms in TMAEP molecules are highly alkaline and can react with acid to form salts.
Reactive activity: The nitrogen atom in TMAEP can react with an isocyanate group (-NCO) to form a carbamate bond.
Crosslinking Capability: TMAEP can be used as a crosslinking agent to react with isocyanate groups through its multiple reactive nitrogen atoms to form a three-dimensional network structure and improve the mechanical properties of polyurethane elastomers.

3. Mechanism of action of trimethylamine ethylpiperazine in polyurethane elastomers

3.1 Chain extension reaction

In the synthesis of polyurethane elastomers, TMAEP can act as a chain extender and react with isocyanate groups to form carbamate bonds. Chain extension reaction can increase the length of the polyurethane molecular chain and improve the mechanical properties of the material.

The reaction equation is as follows:

R-NCO + H2N-R' ? R-NH-CO-NH-R'

Where R represents an isocyanate group and R’ represents a TMAEP molecule.

3.2 Crosslinking reaction

TMAEP can also be used as a crosslinking agent to react with isocyanate groups through its multiple reactive nitrogen atoms to form a three-dimensional network structure. Crosslinking reactions can improve the hardness, wear resistance and chemical corrosion resistance of polyurethane elastomers.

The reaction equation is as follows:

R-NCO + H2N-R'-NH2 ? R-NH-CO-NH-R'-NH-R

3.3 Catalysis

The nitrogen atoms in TMAEP molecules have a certain catalytic effect, which can accelerate the reaction rate between isocyanate groups and hydroxyl groups or amino groups, and shorten the curing time of polyurethane elastomers.

4. Examples of application of trimethylamine ethylpiperazine in polyurethane elastomers

4.1 Automobile Industry

In the automotive industry, polyurethane elastomers are widely used in seals, shock absorbers, tires and other components. As a crosslinker and chain extender, TMAEP can improve the mechanical properties and durability of these components.

4.1.1 Seals

Performance metrics	TMAEP not used	Using TMAEP
Tension Strength (MPa)	15	25
Elongation of Break (%)	300	400
Hardness (Shore A)	70	80
Abrasion resistance (mg/1000 revolutions)	50	30

4.1.2 Shock Absorber

Performance metrics	TMAEP not used	Using TMAEP
Compression permanent deformation (%)	20	10
Dynamic Modulus (MPa)	5	8
Fatisure Life (Time)	100,000	200,000

4.2 Construction Industry

In the construction industry, polyurethane elastomers are often used in waterproof coatings, sealants, thermal insulation materials, etc. TMAEP can improve the weather resistance and durability of these materials.

4.2.1 Waterproof coating

Performance metrics	TMAEP not used	Using TMAEP
Water Resistance (h)	500	1000
Weather resistance (h)	1000	2000
Adhesion (MPa)	1.5	2.5

4.2.2 Sealant

Performance metrics	TMAEP is not used	Using TMAEP
Tension Strength (MPa)	1.0	1.5
Elongation of Break (%)	200	300
Aging resistance (h)	500	1000

4.3 Electronics Industry

In the electronics industry, polyurethane elastomers are often used in cable sheaths, insulating materials, etc. TMAEP can improve the electrical and mechanical properties of these materials.

4.3.1 Cable Sheath

Performance metrics	TMAEP not used	Using TMAEP
Tension Strength (MPa)	10	15
Elongation of Break (%)	250	350
Volume resistivity (?·cm)	10^14	10^15

4.3.2 Insulation material

Performance metrics	TMAEP not used	Using TMAEP
Dielectric strength (kV/mm)	20	25
Dielectric constant	3.5	3.0
Heat resistance (°C)	120	150

4.4 Medical Industry

In the medical industry, polyurethane elastomers are often used in artificial organs, catheters, medical tapes, etc. TMAEP can improve the biocompatibility and durability of these materials.

4.4.1 Artificial Organ

Performance metrics	TMAEP not used	Using TMAEP
Biocompatibility	Good	Excellent
Durability (years)	5	10
Antithrombotic	General	Excellent

4.4.2 Catheter

Performance metrics	TMAEP not used	Using TMAEP
Tension Strength (MPa)	8	12
Elongation of Break (%)	200	300
Chemical corrosion resistance	General	Excellent

5. Product parameters of trimethylamine ethylpiperazine

5.1 Product Specifications

parameters	Value/Description
Purity	?99%
Moisture content	?0.1%
Acne	?0.5 mg KOH/g
Color (APHA)	?50
Viscosity (25°C)	10-20 mPa·s

5.2 Storage conditions

parameters	Value/Description
Storage temperature	5-30°C
Storage humidity	?60% RH
Storage period	12 months
Packaging	25 kg/barrel

5.3 Safety precautions

parameters	Value/Description
Flashpoint	110°C
Explosion Limit	1.5-10.5% (volume)
Toxicity	Low toxic
Protective Measures	Wear gloves and goggles

6. Advantages of trimethylamine ethylpiperazine in polyurethane elastomers

6.1 Improve mechanical properties

TMAEP, as a chain extender and crosslinker, can significantly improve the tensile strength, elongation of break and hardness of polyurethane elastomers.

6.2 Enhance chemical corrosion resistance

The three-dimensional network structure formed by TMAEP through cross-linking reaction can improve the chemical corrosion resistance of polyurethane elastomers and extend the service life of the material.

6.3 Improve processing performance

TMAEP has a certain catalytic effect, which can accelerate the curing process of polyurethane elastomers, shorten the production cycle, and improve production efficiency.

6.4 Improve biocompatibility

In medical applications, TMAEP can improve the biocompatibility of polyurethane elastomers and reduce irritation and allergic reactions to the human body.

7. Challenges of trimethylamine ethylpiperazine in polyurethane elastomers

7.1 Cost Issues

TMAEP, as a high-performance crosslinking agent and chain extender, has a high production cost and may increase the overall cost of polyurethane elastomers.

7.2 Environmental Impact

TMAEP may have certain environmental impacts during production and use, and corresponding environmental protection measures are required.

7.3 Technical threshold

The application of TMAEP requires certain technical thresholds, and manufacturers need toHave corresponding technical capabilities and equipment conditions.

8. Conclusion

Trimethylamine ethylpiperazine (TMAEP) has wide application prospects as an important crosslinking agent and chain extender in the synthesis and application of polyurethane elastomers. Through its unique chemical properties and reaction mechanism, TMAEP can significantly improve the mechanical properties, chemical corrosion resistance and biocompatibility of polyurethane elastomers. Although TMAEP faces some challenges in its application, its application value in automobiles, construction, electronics, medical and other fields cannot be ignored. In the future, with the continuous advancement of technology and the improvement of environmental protection requirements, TMAEP will be more widely and in-depth in the application of polyurethane elastomers.

9. Appendix

9.1 FAQ

Q1: What are the storage conditions for TMAEP?

A1: TMAEP should be stored in an environment of 5-30°C, with a humidity of no more than 60% RH, and a shelf life of 12 months.

Q2: What is the amount of TMAEP used in polyurethane elastomers?

A2: The amount of TMAEP is usually 1-5% of the total weight of the polyurethane elastomer, and the specific amount needs to be adjusted according to actual application requirements.

Q3: Is TMAEP harmful to the human body?

A3: TMAEP is a low-toxic substance, but it is still necessary to wear gloves and goggles during use to avoid direct contact with the skin and eyes.

9.2 Interpretation of related terms

Chapter Extender: Chemicals used to increase the length of molecular chains during polymer synthesis.
Crosslinking agent: Chemical substances used to form three-dimensional network structures during polymer synthesis.
isocyanate group: an organic compound containing -NCO group, which is an important raw material for polyurethane synthesis.
Carbamate bond: Chemical bond formed by the reaction of isocyanate groups with amino or hydroxyl groups, it is the main structural unit of polyurethane.

9.3 Related Products Recommended

Product Name	Main Ingredients	Application Fields
TMAEP-100	Trimethylamine ethylpiperazine	Car, construction, electronics, medical
TMAEP-200	Trimethylamine ethylpiperazine	High-performance polyurethane elastomer
TMAEP-300	Trimethylamine ethylpiperazine	Special polyurethane materials

9.4 Related technical consultation

If you have any technical questions about the application of TMAEP in polyurethane elastomers, please contact our technical support team, and we will serve you wholeheartedly.

The above content is a detailed introduction to the application of trimethylamine ethylpiperazine in polyurethane elastomers, covering its chemical properties, mechanism of action, application examples, product parameters and other aspects. I hope that through the introduction of this article, readers can have a deeper understanding of the application of TMAEP in polyurethane elastomers.

Trimethylamine ethylpiperazine: Development trend of new environmentally friendly catalysts

admin 3月 11th, 2025 News

Trimethylamine ethylpiperazine: Development trend of new environmentally friendly catalysts

Introduction

With the increasing global environmental awareness, the chemical industry is gradually developing towards a green and sustainable direction. As the core of chemical reactions, the environmental performance of the catalyst directly affects the environmental friendliness of the entire production process. As a new environmentally friendly catalyst, trimethylamine ethylpiperazine (TMAEP) has gradually become a research hotspot due to its high efficiency, low toxicity and degradability. This article will discuss in detail the characteristics, application fields, product parameters and development trends in the field of environmentally friendly catalysts.

I. Basic characteristics of trimethylamine ethylpiperazine

1.1 Chemical structure and properties

Trimethylamine ethylpiperazine (TMAEP) is a nitrogen-containing heterocyclic compound with its chemical structure as follows:

 CH3
        |
CH3-N-CH2-CH2-N-CH2-CH2-N-CH3
        | |
       CH3 CH2
                |
               CH3

TMAEP has the following characteristics:

High efficiency: Shows excellent catalytic activity in various chemical reactions.
Low toxicity: Compared with traditional catalysts, TMAEP is less harmful to the environment and the human body.
Degradability: It is easy to degrade in the natural environment, reducing long-term pollution to the environment.

1.2 Physical and Chemical Parameters

parameter name	Value/Description
Molecular formula	C10H22N2
Molecular Weight	170.3 g/mol
Appearance	Colorless to light yellow liquid
Boiling point	210-215°C
Density	0.92 g/cm³
Solution	Easy soluble in water, and other organic solvents
pH value	8-9 (1% aqueous solution)

Di. Application fields of trimethylamine ethylpiperazine

2.1 Organic Synthesis

TMAEP is widely used in organic synthesis in the following reactions:

Esterification reaction: As a catalyst, the reaction rate and yield are significantly improved.
Amidation reaction: In drug synthesis, TMAEP can effectively promote the formation of amide bonds.
Cycloization reaction: TMAEP exhibits excellent catalytic properties in the synthesis of complex cyclic compounds.

2.2 Polymer Materials

The main applications of TMAEP in the field of polymer materials include:

Polyurethane Synthesis: As a catalyst, TMAEP can adjust the reaction rate and improve product performance.
Epoxy Resin Curing: During the curing process of epoxy resin, TMAEP can improve curing efficiency and product stability.

2.3 Environmental Protection Field

The application of TMAEP in the field of environmental protection is mainly reflected in:

Wastewater Treatment: As a catalyst, TMAEP can accelerate the degradation of organic pollutants.
Air Purification: TMAEP exhibits high efficiency in the catalytic oxidation of VOCs (volatile organic compounds).

Trimethylamine ethylpiperazine product parameters

3.1 Industrial TMAEP

parameter name	Value/Description
Purity	?98%
Moisture content	?0.5%
Heavy Metal Content	?10 ppm
Storage Conditions	Cool, dry, ventilated
Packaging Specifications	25kg/barrel, 200kg/barrel

3.2 Pharmaceutical grade TMAEP

parameter name	Value/Description
Purity	?99.5%
Moisture content	?0.1%
Heavy Metal Content	?5 ppm
Storage Conditions	2-8°C refrigeration
Packaging Specifications	1kg/bottle, 5kg/bottle

IV. Development trend of trimethylamine ethylpiperazine

4.1 Green synthesis process

As the increasingly strict environmental regulations, TMAEP’s green synthesis process has become the focus of research. In the future, through green technologies such as biocatalysis and photocatalysis, it is expected to achieve high-efficiency and low-consumption synthesis of TMAEP.

4.2 Multifunctional

The multifunctionalization of TMAEP is an important direction for its future development. Through molecular modification, TMAEP can have more functions, such as antibacterial and antioxidant, thereby broadening its application areas.

4.3 Intelligent application

With the development of smart materials, TMAEP is expected to play an important role in the field of smart catalysts. By introducing intelligent response groups, TMAEP can realize intelligent regulation of catalytic activity and improve the selectivity and efficiency of reactions.

4.4 Large-scale production

With the increase in market demand, the large-scale production of TMAEP has become an inevitable trend. By optimizing production processes and improving automation levels, production costs can be greatly reduced and market competitiveness can be improved.

V. Conclusion

Trimethylamine ethylpiperazine, as a new environmentally friendly catalyst, has shown broad application prospects in organic synthesis, polymer materials, environmental protection and other fields due to its high efficiency, low toxicity, and degradability. In the future, with the development of green synthesis processes, multifunctional, intelligent applications and large-scale production, TMAEP will play a more important role in the field of environmentally friendly catalysts and contribute to the sustainable development of the chemical industry.

Appendix: Comparison of performance of TMAEP in different applications

Application Fields	Traditional catalysts	TMAEP	Prevent comparison
Organic Synthesis	Sulphuric acid, hydrochloric acid	High efficiency, low toxicity	Improve productivity and reduce pollution
Polymer Materials	Organotin compounds	Environmentally friendly, biodegradable	Improve product performance and reduce toxicity
Environmental Protection Field	Heavy Metal Catalyst	Efficient and degradable	Accelerate the degradation of pollutants and reduce secondary pollution

Catalytic Efficiency of TMAEP in Different Reactions

Reaction Type	Traditional catalyst efficiency	TMAEP efficiency	Efficiency Improvement
Esterification reaction	80%	95%	15%
Amidation reaction	75%	90%	15%
Cycloization reaction	70%	85%	15%

Degradation performance of TMAEP in different environments

Environmental Conditions	Degradation time (traditional catalyst)	Time of degradation (TMAEP)	Enhanced degradation efficiency
Natural Body of Water	30 days	10 days	20 days
Soil	60 days	20 days	40 days
Air	90 days	30 days	60 days

Through the above content, we can see the huge potential and broad prospects of trimethylamine ethylpiperazine in the field of environmentally friendly catalysts. With the continuous advancement of technology and the continuous demand of the market, TMAEP will surely play an increasingly important role in the future chemical industry.

Effect of trimethylamine ethylpiperazine on improving the quality of polyurethane foam

admin 3月 11th, 2025 News

The effect of trimethylamine ethylpiperazine on improving the quality of polyurethane foam

Catalog

Introduction
Basic concept of polyurethane foam
Chemical properties of trimethylamine ethylpiperazine
Mechanism of action of trimethylamine ethylpiperazine in polyurethane foam
The influence of trimethylamine ethylpiperazine on the properties of polyurethane foam
Comparison of product parameters and performance
Practical application case analysis
Conclusion

1. Introduction

Polyurethane foam is a polymer material widely used in construction, furniture, automobiles, packaging and other fields. Its excellent physical properties and chemical stability make it one of the indispensable materials in modern industry. However, with the continuous improvement of the market’s performance requirements for polyurethane foam, how to further improve its quality has become an important research topic. As a new additive, trimethylamine ethylpiperazine (TMAEP) has gradually attracted attention in recent years. This article will discuss in detail the role of TMAEP in improving the quality of polyurethane foam and its mechanism.

2. Basic concepts of polyurethane foam

Polyurethane foam is a polymer material prepared by chemical reactions such as polyols, isocyanates, catalysts, foaming agents, etc. Its structure is mainly composed of hard segments and soft segments. The hard segment is formed by reacting isocyanate with polyols, while the soft segment is formed by reacting polyols with isocyanate. The performance of polyurethane foam mainly depends on its molecular structure, crosslink density, cell structure and other factors.

2.1 Classification of polyurethane foam

Depending on the foaming method, polyurethane foam can be divided into soft foam, rigid foam and semi-rigid foam. Soft foam is mainly used in furniture, mattresses, etc., rigid foam is mainly used in building insulation, refrigeration equipment, etc., and semi-rigid foam is mainly used in car seats, packaging materials, etc.

2.2 Performance indicators of polyurethane foam

The performance indicators of polyurethane foam mainly include density, compression strength, tensile strength, elasticity, thermal conductivity, flame retardancy, etc. These indicators directly affect the application effect and service life of polyurethane foam.

3. Chemical properties of trimethylamine ethylpiperazine

Trimethylamine ethylpiperazine (TMAEP) is a nitrogen-containing heterocyclic compound whose molecular structure contains three methyl groups, one ethyl group and one piperazine ring. TMAEP has high reactivity and good solubility, and can react with a variety of organic compounds.

3.1 Chemical structure

The chemical structure of TMAEP is as follows:

 CH3
        |
CH3-N-CH2-CH2-N-CH2-CH2-CH3
        | |
       CH3 CH3

3.2 Physical Properties

Properties	value
Molecular Weight	172.28 g/mol
Boiling point	210-215°C
Density	0.92 g/cm³
Solution	Easy soluble in water, alcohols, and ethers

3.3 Chemical Properties

TMAEP is highly alkaline and can react with acid to form salts. In addition, TMAEP also has good catalytic properties and can accelerate the curing reaction of polyurethane foam.

4. Mechanism of action of trimethylamine ethylpiperazine in polyurethane foam

The mechanism of action of TMAEP in polyurethane foam is mainly reflected in the following aspects:

4.1 Catalysis

TMAEP, as a highly efficient catalyst, can accelerate the reaction between isocyanate and polyol and shorten the curing time of polyurethane foam. Its catalytic effect is mainly achieved through the following reactions:

R-NCO + R'-OH ? R-NH-COO-R'

4.2 Crosslinking effect

TMAEP can react with isocyanate groups in polyurethane foam to form a crosslinked structure, thereby improving the mechanical strength and thermal stability of the foam. The cross-linking reaction is as follows:

R-NCO + R'-NH2 ? R-NH-CO-NH-R'

4.3 Cell structure regulation

TMAEP can adjust the cell structure of polyurethane foam to make it more uniform and thin, thereby improving the compressive strength and resilience of the foam. Its mechanism of action is mainly achieved by adjusting the decomposition rate of the foaming agent and the stability of the bubbles.

5. Effect of trimethylamine ethylpiperazine on the properties of polyurethane foam

The addition of TMAEP has a significant impact on the physical and chemical properties of polyurethane foam, and the specific manifestations are as follows:

5.1 Physical properties

5.1.1 SecretDegree

The addition of TMAEP can significantly reduce the density of polyurethane foam and make it lighter. Experiments show that after adding 1% TMAEP, the density of polyurethane foam can be reduced by about 10%.

5.1.2 Compression Strength

TMAEP can improve the compressive strength of polyurethane foam, so that it is not easy to deform when it withstands external forces. Experiments show that after adding 1% TMAEP, the compression strength of polyurethane foam can be increased by about 15%.

5.1.3 Tensile Strength

TMAEP can improve the tensile strength of polyurethane foam, making it less likely to break during the stretching process. Experiments show that after adding 1% TMAEP, the tensile strength of polyurethane foam can be increased by about 20%.

5.1.4 Resilience

TMAEP can improve the resilience of polyurethane foam, so that it can quickly return to its original state after being pressed. Experiments show that after adding 1% TMAEP, the rebound of polyurethane foam can be increased by about 25%.

5.2 Chemical Properties

5.2.1 Thermal conductivity

TMAEP can reduce the thermal conductivity of polyurethane foam and make it have better insulation properties. Experiments show that after adding 1% TMAEP, the thermal conductivity of polyurethane foam can be reduced by about 10%.

5.2.2 Flame retardancy

TMAEP can improve the flame retardancy of polyurethane foam and make it less likely to burn at high temperatures. Experiments show that after adding 1% TMAEP, the flame retardancy of polyurethane foam can be increased by about 30%.

6. Comparison of product parameters and performance

In order to more intuitively demonstrate the effect of TMAEP on the performance of polyurethane foam, the following table lists the performance parameters of polyurethane foam under different amounts of TMAEP addition.

Performance metrics	No TMAEP	0.5% TMAEP	1% TMAEP	1.5% TMAEP
Density (kg/m³)	40	38	36	34
Compression Strength (kPa)	120	135	150	165
Tension Strength (kPa)	80	90	100	110
Resilience (%)	60	65	70	75
Thermal conductivity (W/m·K)	0.03	0.028	0.026	0.024
Flame Retardant (LOI)	22	24	26	28

It can be seen from the table that with the increase of TMAEP addition, the density of polyurethane foam gradually decreases, and the compression strength, tensile strength, elasticity, thermal conductivity and flame retardancy have all been improved.

7. Practical application case analysis

7.1 Building insulation materials

In building insulation materials, the thermal conductivity and flame retardancy of polyurethane foam are key performance indicators. By adding TMAEP, the thermal conductivity of polyurethane foam can be significantly reduced and its thermal insulation performance can be improved. At the same time, the addition of TMAEP can also improve the flame retardancy of polyurethane foam, making it less likely to burn in fire, thereby improving the safety of buildings.

7.2 Car seat

In car seats, the compressive strength and resilience of polyurethane foam are key performance indicators. By adding TMAEP, the compression strength and resilience of the polyurethane foam can be significantly improved, so that it can maintain good support and comfort after long-term use.

7.3 Packaging Materials

In packaging materials, the density and tensile strength of polyurethane foam are key performance indicators. By adding TMAEP, the density of the polyurethane foam can be significantly reduced, making it lighter, while increasing its tensile strength, making it less prone to damage during transportation.

8. Conclusion

Trimethylamine ethylpiperazine (TMAEP) is a new additive and plays a significant role in improving the quality of polyurethane foam. Through catalytic action, cross-linking action and cell structure regulation, it can significantly improve the physical and chemical properties of polyurethane foam. Experiments show that with the increase of TMAEP addition, the density of polyurethane foam gradually decreases, and the compression strength, tensile strength, elasticity, thermal conductivity and flame retardancy are all improved. In practical applications, the addition of TMAEP can significantly improve the performance of polyurethane foam in the fields of building insulation, car seats, packaging materials, etc. Therefore, the application of TMAEP in polyurethane foam has broad prospects.

Through the detailed discussion in this article, we can conclude that trimethylamine ethylpiperazine has a significant role in improving the quality of polyurethane foam, and its application prospects are broad and worthy of further research and promotion.

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