Thermal Sensitive Catalyst SA-102: Optimizing the Mechanical Properties of Polyurethane Cast Parts
Introduction
Polyurethane (PU) materials are widely used in automobiles, construction, electronics, medical and other fields due to their excellent mechanical properties, wear resistance, chemical resistance and processability. However, the performance of polyurethane materials depends largely on their processing technology and formulation design, with the choice of catalysts being particularly critical. As a highly efficient and environmentally friendly catalyst, the thermosensitive catalyst SA-102 has been widely used in the production of polyurethane cast parts in recent years. This article will introduce in detail the characteristics, application of SA-102 and its role in optimizing the mechanical properties of polyurethane castables.
1. Overview of thermal-sensitive catalyst SA-102
1.1 Product Introduction
Thermal-sensitive catalyst SA-102 is a highly efficient catalyst designed for polyurethane materials. It has thermally sensitive properties and can be activated at specific temperatures to accurately control the reaction process of polyurethane. SA-102 can not only improve production efficiency, but also significantly improve the mechanical properties of polyurethane products.
1.2 Product parameters
| parameter name | parameter value |
|---|---|
| Appearance | Colorless to light yellow liquid |
| Density (20°C) | 1.05 g/cm³ |
| Viscosity (25°C) | 50-100 mPa·s |
| Flashpoint | >100°C |
| Solution | Easy soluble in alcohols and esters |
| Active temperature range | 60-120°C |
| Recommended additions | 0.1-0.5% |
1.3 Product Advantages
- High-efficiency Catalysis: SA-102 can be activated at lower temperatures, significantly shortening the reaction time.
- Precise control: Thermal-sensitive properties make the reaction process controllable and avoid overreaction.
- Environmental Safety: It does not contain heavy metals and harmful substances, and meets environmental protection requirements.
- Widely applicable: Suitable for a variety of polyurethane systems, including soft, hard and semi-rigid foams.
2. Mechanical properties of polyurethane castable parts
2.1 Mechanical performance indicators
The mechanical properties of polyurethane casting parts mainly include tensile strength, elongation of break, tear strength, compression strength and hardness. These performance indicators directly affect the service life and application range of the product.
| Performance metrics | Definition |
|---|---|
| Tension Strength | The high stress that the material can withstand during the tensile process |
| Elongation of Break | The ratio of the elongation of the material before breaking to its original length |
| Tear Strength | The ability of material to resist tear |
| Compression Strength | The high stress that the material can withstand during compression |
| Hardness | The ability of materials to resist local deformation |
2.2 Factors that affect mechanical properties
- Formula Design: Including the selection and proportion of polyols, isocyanates, catalysts, chain extenders, etc.
- processing technology: such as pouring temperature, pressure, time, etc.
- Catalytic Selection: The type and amount of catalyst directly affect the reaction rate and crosslink density.
3. Application of SA-102 in optimizing the mechanical properties of polyurethane castables
3.1 Improve reaction efficiency
The thermally sensitive properties of SA-102 enable it to be activated rapidly at specific temperatures, significantly improving the reaction efficiency. By precisely controlling the reaction temperature, it is possible to avoid excessive or slow reaction, thereby obtaining a uniform product structure.
3.2 Improve product structure
The precise control ability of SA-102 makes the cross-linking of the polyurethane molecular chain more uniform, thereby improving the mechanical properties of the product. A uniform crosslinking structure helps to improve tensile strength, elongation of break and tear strength.
3.3 Optimize processing technology
The recommended amount of SA-102 is 0.1-0.5%. In actual applications, the amount of addition can be adjusted according to specific needs. ByChemical processing technology, such as adjusting the casting temperature and pressure, can further improve the mechanical properties of the product.
3.4 Practical application cases
The following is a practical case of optimizing the mechanical properties of polyurethane castables using SA-102.
| Project | Pre-optimization | After optimization | Elevation |
|---|---|---|---|
| Tension Strength (MPa) | 25 | 30 | 20% |
| Elongation of Break (%) | 300 | 350 | 16.7% |
| Tear strength (N/mm) | 50 | 60 | 20% |
| Compression Strength (MPa) | 15 | 18 | 20% |
| Hardness (Shore A) | 80 | 85 | 6.25% |
4. Suggestions for use of SA-102
4.1 Adding quantity control
The recommended amount of SA-102 is 0.1-0.5%. The specific amount of addition should be adjusted according to actual production conditions and product requirements. Excessively high amount of addition may lead to excessive reaction and affect product quality; excessively low amount of addition may not achieve the expected catalytic effect.
4.2 Temperature Control
The active temperature range of SA-102 is 60-120°C. In actual production, the reaction temperature should be strictly controlled to ensure that the catalyst operates within the optimal active temperature range. Too high temperature may lead to too fast reaction, and too low temperature may affect the catalytic effect.
4.3 Mix well
When using SA-102, it should be ensured that it is fully mixed with polyols, isocyanates and other raw materials to avoid local reactions being too fast or too slow, affecting product quality.
5. Conclusion
As an efficient and environmentally friendly catalyst, thermis-sensitive catalyst SA-102 has significant advantages in optimizing the mechanical properties of polyurethane castables. By precisely controlling the reaction process, SA-102 can significantly improve the tensile strength, elongation of break, tear strength, compression strength of the product andMechanical performance indicators such as hardness. In practical applications, the reasonable control of the addition amount, reaction temperature and mixing uniformity can further exert the catalytic effect of SA-102 and obtain high-quality polyurethane products.
6. Future Outlook
With the continuous expansion of the application field of polyurethane materials, the requirements for catalysts are becoming higher and higher. In the future, the thermal catalyst SA-102 is expected to be used in more fields, such as high-performance composite materials, smart materials, etc. At the same time, with the improvement of environmental protection requirements, the environmental protection characteristics of SA-102 will give it a greater advantage in market competition.
7. FAQ
7.1 Is SA-102 suitable for all polyurethane systems?
SA-102 is suitable for a variety of polyurethane systems, including soft, hard and semi-rigid foams. However, in specific applications, adjustments should be made according to actual needs.
7.2 What are the storage conditions for SA-102?
SA-102 should be stored in a cool, dry and well-ventilated place to avoid direct sunlight and high temperatures. The storage temperature should be controlled between 5-30°C.
7.3 How long does the service life of SA-102 last?
Under the recommended storage conditions, the shelf life of SA-102 is generally 12 months. After the shelf life is exceeded, performance testing should be carried out to ensure its catalytic effect.
7.4 Is SA-102 harmful to the human body?
SA-102 does not contain heavy metals and harmful substances, but should avoid direct contact with the skin and eyes during use. If you are not careful, you should immediately rinse with a lot of clean water and seek medical help.
8. Summary
Thermal-sensitive catalyst SA-102 has significant advantages in optimizing the mechanical properties of polyurethane castables. By precisely controlling the reaction process, SA-102 can significantly improve the mechanical properties of the products and meet the needs of different application fields. In practical applications, the reasonable control of the addition amount, reaction temperature and mixing uniformity can further exert the catalytic effect of SA-102 and obtain high-quality polyurethane products. In the future, with the continuous expansion of the application field of polyurethane materials, SA-102 is expected to be applied in more fields, making greater contributions to the development of the polyurethane industry.
Extended reading:https://www.bdmaee.net/2-4-6-trisdimethylaminomethylphenol/
Extended reading:https://www.bdmaee.net/dibbutyltin-monooctyl-maleate-cas25168-21-2-bt-58c/
Extended reading:https://www.bdmaee.net/wp-content/uploads/2022/08/37-2.jpg
Extended reading:https://www.bdmaee.net/67874-71-9/
Extended reading:https://www.newtopchem.com/archives/44083
Extended reading:mailto:sales@newtopchem.com”>
Extended reading:https://www.bdmaee.net/wp-content/uploads/2022/08/bis3-dimethylaminopropylamino-2-propanol-CAS-67151-63-7-Jeffcat-ZR-50.pdf
Extended reading:https://www.newtopchem.com/archives/954
Extended reading:https://www.morpholine.org/high-quality-n-dimethylaminopropyldiisopropanolamine-cas-63469-23-8-n-3-dimethyl-amino-propyl-n-n-diisopropanolamine/
Extended reading:https://www.newtopchem.com/archives/44685
