Octaphenylcyclotetrasiloxane is indeed a magical additive that can significantly improve the performance of rubber materials. The following is a detailed analysis of it:
1. Basic properties
Molecular formula: C48H40O4Si4
Molecular weight: 793.18 (some data give 793.1708, the difference between the two is very small, which may be due to calculation accuracy or rounding error)
CAS registration number: 546-56-5
Appearance: white powder crystals
Density: about 1.223g/cm³ (some data give 1.185g/mL, which may be due to slight differences caused by different measurement conditions or methods)
Melting point: 196~198°C
Boiling point: 334°C
Flash point: greater than 200°C
Solubility: insoluble in water, but soluble in general chemical solvents
2. Principles and applications of improving the performance of rubber materials
Octaphenylcyclotetrasiloxane plays an important role in rubber materials due to its unique structure and properties.
High temperature stabilizer and antioxidant: Under high temperature environment, octaphenylcyclotetrasiloxane can stabilize the performance of rubber materials, improve the heat resistance and aging resistance of materials, and thus extend the service life of materials.
Improve fluidity and processing performance: As an additive, it can improve the fluidity of rubber materials, making the materials easier to shape and form during processing, and improving production efficiency.
Enhance weather resistance and chemical corrosion resistance: The introduction of octaphenylcyclotetrasiloxane can also enhance the weather resistance and chemical corrosion resistance of rubber materials, so that the materials can still maintain stable performance in harsh environments.
In the rubber industry, octaphenylcyclotetrasiloxane is often used as a crosslinker for silicone rubber to prepare high-performance rubber seals and insulating materials. These materials have broad application prospects in electronics, automobiles, aerospace and other fields.
3. Other application fields
In addition to the rubber industry, octaphenylcyclotetrasiloxane also shows a wide range of application value in other fields.
Antifouling coatings: It can be physically mixed in antifouling coatings in the form of monomers to reduce the surface energy of the coating, increase the flexibility of the coating film, and act as a defoaming agent.
Pharmaceutical intermediates: Octaphenylcyclotetrasiloxane can also be used to synthesize pharmaceutical intermediates, providing support for the development of the pharmaceutical field.
Organic synthesis catalyst: In organic synthesis, octaphenylcyclotetrasiloxane can be used as a catalyst to participate in organic reactions, promote chemical reactions, and improve the selectivity and yield of reactions.
4. Precautions for use
Although octaphenylcyclotetrasiloxane has many advantages, the following points should still be noted during use:
Storage conditions: It should be stored in a cool, dry, well-ventilated warehouse, away from fire, heat sources, and direct sunlight.
Packaging and transportation: The product should be sealed and stored separately from acids and edible chemicals, and should not be mixed. Safety should also be ensured during transportation to avoid leakage.
Operation safety: Operators need to wear appropriate protective equipment to avoid direct contact with skin and eyes. If accidentally contacted, rinse with plenty of water immediately and seek medical attention.
In summary, as an efficient rubber material additive, octaphenylcyclotetrasiloxane has significant advantages in improving material performance. At the same time, its application in other fields also shows broad prospects. However, safety and storage conditions must still be taken into consideration during use to ensure product stability and effectiveness.
