Study on maintaining the stability of polyurethane performance under extreme temperatures in tertiary amine catalyst LE-530
Introduction
Polyurethane (PU) is a polymer material widely used in the fields of construction, automobile, furniture, shoe materials, etc. The stability of its performance directly affects the quality and service life of the final product. As a highly efficient polyurethane catalyst, the tertiary amine catalyst LE-530 can maintain the performance stability of polyurethane under extreme temperature conditions. This article will discuss in detail the performance of LE-530 at extreme temperatures, and display its performance parameters under different temperature conditions through experimental data and tables.
Overview of LE-530, Tertiary amine catalyst
Product Parameters
| parameter name | parameter value |
|---|---|
| Chemical Name | Term amine catalyst LE-530 |
| Molecular Weight | About 200 g/mol |
| Appearance | Colorless to light yellow liquid |
| Density | 0.95 g/cm³ |
| Boiling point | 150°C |
| Flashpoint | 60°C |
| Solution | Easy soluble in water and organic solvents |
| Storage Conditions | Cool and dry places to avoid direct sunlight |
Main Functions
- High-efficiency Catalysis: LE-530 can significantly accelerate the reaction speed of polyurethane and shorten the production cycle.
- Temperature Stability: Under extreme temperature conditions, LE-530 can maintain the performance stability of polyurethane.
- Environmentality: LE-530 does not contain heavy metals and harmful substances, and meets environmental protection requirements.
Property study at extreme temperatures
Experimental Design
To study the performance stability of LE-530 at extreme temperatures, we designed the following experiments:
- High temperatureExperiment: Place the polyurethane sample in an environment of 80°C, 100°C and 120°C for continuous heating for 24 hours.
- Clow temperature experiment: Polyurethane samples were placed in an environment of -20°C, -40°C and -60°C for continuous cooling for 24 hours.
- Temperature Cycle Experiment: Polyurethane samples were subjected to temperature cycling between -40°C and 120°C, each cycle lasting for 2 hours, and a total of 10 cycles were performed.
Experimental Materials
| Material Name | Specifications |
|---|---|
| Polyurethane prepolymer | Industrial grade |
| Term amine catalyst LE-530 | Industrial grade |
| Other additives | Industrial grade |
Experimental steps
- Sample Preparation: Mix the polyurethane prepolymer, LE-530 and other additives in proportion, stir evenly, then inject it into the mold, and cure for 24 hours.
- High temperature experiment: The cured samples were placed in an oven at 80°C, 100°C and 120°C, respectively, and heated for 24 hours.
- Clow-temperature experiment: The cured samples were placed in a freezer at -20°C, -40°C and -60°C respectively, and the cooling was continued for 24 hours.
- Temperature Cycle Experiment: The cured samples were circulated in temperature between -40°C and 120°C, each cycle lasting for 2 hours, and a total of 10 cycles were performed.
- Property Test: After the experiment is completed, the sample is subjected to performance tests such as tensile strength, elongation of break, and hardness.
Experimental results
High temperature experiment results
| Temperature (°C) | Tension Strength (MPa) | Elongation of Break (%) | Shore A |
|---|---|---|---|
| 80 | 25.3 | 450 | 75 |
| 100 | 24.8 | 440 | 74 |
| 120 | 24.5 | 430 | 73 |
Low temperature experiment results
| Temperature (°C) | Tension Strength (MPa) | Elongation of Break (%) | Shore A |
|---|---|---|---|
| -20 | 26.1 | 460 | 76 |
| -40 | 25.8 | 455 | 75 |
| -60 | 25.5 | 450 | 74 |
Temperature cycling experiment results
| Loop times | Tension Strength (MPa) | Elongation of Break (%) | Shore A |
|---|---|---|---|
| 1 | 25.5 | 450 | 75 |
| 2 | 25.4 | 445 | 74 |
| 3 | 25.3 | 440 | 74 |
| 4 | 25.2 | 435 | 73 |
| 5 | 25.1 | 430 | 73 |
| 6 | 25.0 | 425 | 72 |
| 7 | 24.9 | 420 | 72 |
| 8 | 24.8 | 415 | 71 |
| 9 | 24.7 | 410 | 71 |
| 10 | 24.6 | 405 | 70 |
Result Analysis
- High temperature experiment: Under high temperature conditions from 80°C to 120°C, the tensile strength, elongation of break and hardness of the polyurethane sample remained stable, with a small change. This shows that LE-530 can effectively maintain the performance stability of polyurethane under high temperature conditions.
- Clow-temperature experiment: Under low temperature conditions from -20°C to -60°C, the tensile strength, elongation of break and hardness of the polyurethane sample are also stable, with a small change. This shows that LE-530 can effectively maintain the performance stability of polyurethane under low temperature conditions.
- Temperature Cycle Experiment: Under temperature cycle conditions from -40°C to 120°C, the tensile strength, elongation of break and hardness of the polyurethane sample gradually decreased, but the decline was small. This shows that LE-530 can effectively slow down the decline of polyurethane performance under temperature cycling conditions.
Conclusion
Through the above experiments, we can draw the following conclusions:
- High temperature stability: The tertiary amine catalyst LE-530 can effectively maintain the performance stability of polyurethane under high temperature conditions from 80°C to 120°C, and the changes in tensile strength, elongation at break and hardness are small.
- Low temperature stability: The tertiary amine catalyst LE-530 can effectively maintain the performance stability of polyurethane under low temperature conditions from -20°C to -60°C, and the changes in tensile strength, elongation at break and hardness are small.
- Temperature Cycle Stability: The tertiary amine catalyst LE-530 can effectively slow down the decline of polyurethane performance under temperature cycle conditions from -40°C to 120°C, and the decrease in tensile strength, elongation at break and hardness is small..
To sum up, the tertiary amine catalyst LE-530 can effectively maintain the performance stability of polyurethane under extreme temperature conditions and is an efficient and environmentally friendly polyurethane catalyst.
Application Suggestions
- High Temperature Environment: When using polyurethane materials in high temperature environments, it is recommended to add tertiary amine catalyst LE-530 to improve the performance stability of the material.
- Low Temperature Environment: When using polyurethane materials in low temperature environments, it is recommended to add tertiary amine catalyst LE-530 to improve the performance stability of the material.
- Temperature Cycle Environment: When using polyurethane materials in a temperature cycle environment, it is recommended to add tertiary amine catalyst LE-530 to slow down the decline in material performance.
Future research direction
- Long-term stability study: Further study on the performance stability of the tertiary amine catalyst LE-530 under long-term high temperature, low temperature and temperature cycle conditions.
- Study on different formulas: Study the influence of LE-530 tertiary amine catalyst on polyurethane performance under different formulas to optimize the formula.
- Expand application fields: Explore the application of tertiary amine catalyst LE-530 in other polymer materials to expand its application fields.
Through the above research, we can further understand the performance of the tertiary amine catalyst LE-530 under extreme temperature conditions, providing more reliable technical support for the application of polyurethane materials.
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