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.
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