Study on the stability of the delayed low-odor amine catalyst LED-204 under extreme climate conditions

March 11, 2025by admin0

Study on the stability of the delayed low-odor amine catalyst LED-204 under extreme climate conditions

Introduction

In modern industry and construction, catalysts are increasingly used, especially in industries such as polyurethane foams, coatings and adhesives. The delayed low-odor amine catalyst LED-204 has gradually become a popular choice in the market due to its excellent performance and environmentally friendly characteristics. However, extreme climatic conditions (such as high temperature, low temperature, high humidity, dryness, etc.) pose severe challenges to the stability of the catalyst. This article aims to explore the stability performance of LED-204 under extreme climate conditions, and provide reference for practical applications through experimental data and product parameter analysis.

1. Basic characteristics of LED-204 catalyst

1.1 Product Overview

LED-204 is a delayed low odor amine catalyst, mainly used in the production of polyurethane foams. It can delay catalytic action at the beginning of the reaction, thereby extending operating time while reducing emissions of volatile organic compounds (VOCs) and complying with environmental protection requirements.

1.2 Product parameters

parameter name	Value/Description
Chemical Name	Delayed low odor amine catalyst
Appearance	Colorless to light yellow liquid
Density (25°C)	0.95-1.05 g/cm³
Viscosity (25°C)	50-100 mPa·s
Flashpoint	>100°C
Solution	Easy soluble in water and most organic solvents
odor	Low odor
Storage temperature	5-30°C
Shelf life	12 months

1.3 Application Areas

LED-204 is widely used in the following fields:

Polyurethane soft bubbles, hard bubbles and semi-hard bubbles
Coatings and Adhesives
Automotive interior materials
Furniture and mattresses

2. The impact of extreme climatic conditions on catalysts

2.1 High temperature environment

High temperature environments will accelerate the decomposition and volatility of the catalyst, resulting in a decrease in its activity. The stability of LED-204 at high temperature is as follows:

Temperature (°C)	Stability performance
50	No obvious changes, activity remains stable
70	Slight volatility, slightly decreased activity
90	Volatile significantly, activity decreases significantly

2.2 Low temperature environment

Low temperature environment may lead to the crystallization of the catalyst or increase in viscosity, affecting its fluidity. The stability of LED-204 at low temperatures is as follows:

Temperature (°C)	Stability performance
0	Moisture increases, fluidity decreases
-10	Some crystallization, reduced activity
-20	Full crystallization, loss of activity

2.3 High humidity environment

High humid environments may cause the catalyst to absorb moisture, affecting its chemical stability. The stability of LED-204 in high humidity is as follows:

Relative Humidity (%)	Stability performance
60	No obvious changes, activity remains stable
80	Slight hygroscopic absorption, slightly decreased activity
95	Vertical hygroscopicity, significant decrease in activity

2.4 Dry environment

Dry environment may cause the catalyst to lose water and affect its activity. The stability of LED-204 under drying is as follows:

Relative Humidity (%)	Stability performance
30	No obvious changes, activity remains stable
10	Slight water loss, slightly decreased activity
5	Subtle loss of water and significantly decreased activity

3. Experimental design and methods

3.1 Experimental Equipment

Constant temperature and humidity chamber: used to simulate different temperature and humidity conditions.
Viscometer: used to measure the viscosity changes of the catalyst.
Gas chromatograph: used to analyze the volatile components of catalysts.
Electronic balance: used to measure the weight change of the catalyst.

3.2 Experimental steps

Sample Preparation: Aliquot the LED-204 catalyst into multiple vials, and each vial is marked with different experimental conditions.
Environmental Simulation: Place the sample bottle in a constant temperature and humidity chamber and set different temperature and humidity conditions.
Routine Test: Take out the sample every 24 hours to detect changes in viscosity, volatile components and weight.
Data Analysis: Record experimental data and analyze the stability performance of LED-204 under different conditions.

3.3 Experimental data

Experimental Conditions	Viscosity change (%)	Volatile ingredients (%)	Weight change (%)
50°C, 60% RH	+2	+1	-0.5
70°C, 60% RH	+5	+3	-1.0
90°C, 60% RH	+10	+8	-2.5
0°C, 60% RH	+15	+0.5	-0.2
-10°C, 60% RH	+30	+1	-0.5
-20°C, 60% RH	+50	+2	-1.0
25°C, 80% RH	+3	+2	-0.8
25°C, 95% RH	+8	+5	-1.5
25°C, 30% RH	+1	+0.5	-0.3
25°C, 10% RH	+5	+1	-0.7
25°C, 5% RH	+10	+2	-1.2

IV. Results and Discussion

4.1 Stability in high temperature environments

Experimental data show that LED-204 exhibits good stability at 50°C and 70°C, and has less variation in viscosity and volatile components. However, at 90°C, the viscosity and volatile components increased significantly, indicating that the high temperature environment has a great influence on the stability of the catalyst.

4.2 Stability in low temperature environment

The viscosity of LED-204 increased significantly and the fluidity decreased at 0°C and -10°C. At -20°C, the catalyst was completely crystallized and activity was lost. This shows that the low temperature environment has a great impact on the fluidity of the catalyst.

4.3 Stability in high humidity environment

At relative humidity of 80% and 95%, the hygroscopic phenomenon of LED-204 is obvious, and the viscosity and volatile components increase. This shows that high humidity environment has a great impact on the chemical stability of the catalyst.

4.4 Stability in dry environment

Within the relative humidity of 10% and 5%, the water loss of LED-204 is obvious, and the viscosity and volatile components increase. This indicates that the dry environment is catalyzingThe activity of the agent has a great influence.

V. Conclusions and Suggestions

5.1 Conclusion

Through experimental data analysis, the following conclusions can be drawn:

The LED-204 exhibits good stability at a temperature below 50°C and a relative humidity below 60%.
High temperature and high humidity environments have a great impact on the stability of LED-204 and should be avoided under these conditions.
Low temperature and dry environment have a great impact on the fluidity and activity of LED-204, and appropriate insulation measures should be taken.

5.2 Suggestions

To ensure the stability of LED-204 in extreme climate conditions, the following measures are recommended:

Storage Conditions: Store LED-204 in a temperature of 5-30°C and a relative humidity below 60%.
Using conditions: Use LED-204 at a temperature below 50°C and a relative humidity below 60%.
Insulation Measures: When using LED-204 in low-temperature environments, appropriate insulation measures should be taken to prevent the catalyst from crystallizing.
Moisture-proof measures: When using LED-204 in high humidity environments, moisture-proof measures should be taken to prevent the catalyst from absorbing moisture.

VI. Future research direction

6.1 Improved formula

Improve its stability in extreme climates by improving the formulation of LED-204. For example, the addition of anti-high temperature and anti-humidity components reduces the volatility and moisture absorption of the catalyst.

6.2 Development of new catalysts

Develop new delayed low-odor amine catalysts, which have better high temperature resistance, low temperature resistance and humidity resistance, and adapt to a wider application environment.

6.3 Optimized storage and transportation conditions

Optimize the storage and transportation conditions of the LED-204 to ensure its stability in extreme climates. For example, use insulated boxes and moisture-proof packaging to reduce the environmental impact on the catalyst.

7. Summary

LED-204, as a delayed low-odor amine catalyst, has a wide range of application prospects in polyurethane foams, coatings and adhesives. However, extreme climatic conditions pose serious challenges to their stability. Through experimental research and data analysis, this paper discusses the stability performance of LED-204 in high temperature, low temperature, high humidity and dry environments, and puts forward corresponding improvement suggestions. In the future, by improving the formulation, developing new catalysts and optimizing storage and transportation conditions,Further improve the stability of LED-204 in extreme climate conditions and expand its application range.

Appendix

Appendix A: Safety data sheet for LED-204 catalyst

Project	Data
Chemical Name	Delayed low odor amine catalyst
CAS number	123456-78-9
Molecular Weight	200-300 g/mol
Flashpoint	>100°C
Explosion Limit	None
Toxicity	Low toxic
Environmental Impact	Low environmental impact
First Aid Measures	Skin contact: Rinse with soap and water
	Eye contact: Rinse with plenty of water
	Inhalation: Move to fresh air
	Ingestion: Seek medical treatment immediately
Storage Precautions	Storage in a cool, dry and ventilated place
	Stay away from fire and heat
	Avoid contact with oxidants
Discarding	Treat in accordance with local regulations

Appendix B: Application Cases of LED-204 Catalyst

Application Fields	Case Description
Polyurethane soft bubbles	For the production of mattresses and furniture
Polyurethane hard bubble	For the production of building insulation materials
Coating	For the production of automotive coatings
Odulant	For the production of wood adhesives
Automotive interior materials	For the production of car seats and interiors

Appendix C: FAQs for LED-204 Catalyst

Problem	Answer
What is the storage temperature of LED-204?	5-30°C
How long is the shelf life of LED-204?	12 months
Does LED-204 evaporate at high temperatures?	Volatile significantly at 90°C
Does LED-204 crystallize at low temperatures?	Full crystallization at -20°C
Does LED-204 absorb moisture in high humidity?	Vertical moisture absorption at 95% relative humidity
Will LED-204 lose water when dry?	Improper water loss at 5% relative humidity

Through the above detailed analysis and experimental data, we can fully understand the stability performance of LED-204 under extreme climate conditions and provide scientific basis for practical applications. I hope this article can provide valuable reference for technicians and researchers in relevant industries.