The development of liquid silicone rubber (LSR) is a comprehensive process involving multiple fields such as materials science, chemical engineering and process technology. The following is an overview of some key aspects of liquid silicone research and development:
1. Basic research and material selection
Polysiloxane base polymer: The base material of liquid silicone is liquid polysiloxane, and the silicon-oxygen bond (Si-O) in its molecular structure gives silicone unique flexibility and stability. During the research and development process, it is necessary to select suitable polysiloxane as the starting material to meet the needs of specific applications.
Crosslinkers and catalysts: Crosslinkers and catalysts are key components in the curing process of liquid silicone. Their selection and ratio directly affect the curing speed, curing degree and final performance of silicone. Therefore, in the research and development process, it is necessary to deeply study the mechanism of action of different crosslinkers and catalysts and optimize the ratio.
Additives: In order to improve the performance of liquid silicone, various additives need to be added, such as reinforcing fillers (such as nano-silicon dioxide, nano-calcium carbonate, etc.), pigments, heat-resistant additives, release agents, etc. The selection and dosage of these additives also need to be strictly verified by experiments.
2. Process technology research and development
Preparation process: The preparation process of liquid silicone includes multiple steps such as mixing, molding, and curing. During the research and development process, it is necessary to continuously optimize these process parameters to improve the quality and production efficiency of the product. For example, by improving the stirring effect of the mixing equipment, the components can be mixed more evenly; by optimizing the design of the molding mold, more complex and fine product shapes can be produced.
Curing technology: The curing technology of liquid silicone is the key to achieving its performance. According to different application requirements, different curing methods can be selected, such as room temperature curing, heating curing, etc. During the research and development process, it is necessary to conduct in-depth research on the curing mechanism and develop new curing agents or catalysts to increase the curing speed and degree of curing.
Molding technology: The molding technology of liquid silicone includes injection molding, compression molding and other methods. These molding technologies have their own advantages and disadvantages and are suitable for different application scenarios. During the research and development process, it is necessary to select the appropriate molding method according to the specific needs of the product, and continuously optimize the molding process parameters to improve the accuracy and consistency of the product.
3. Performance testing and evaluation
Physical performance test: including tests of indicators such as density, hardness, tensile strength, and elongation at break. These tests can evaluate whether the basic physical properties of liquid silicone meet the application requirements.
Chemical performance test: including tests of corrosion resistance, aging resistance, weather resistance and other indicators. These tests can evaluate the stability and durability of liquid silicone in different environments.
Special performance test: According to the specific application requirements, other special performance tests may also be required, such as transparency test (for optical components), electrical performance test (for electronic components), etc.
IV. Application research and market development
Application field research: Liquid silicone has a wide range of application prospects, including health care, electronic appliances, automobile manufacturing and other fields. During the research and development process, it is necessary to conduct in-depth research on the specific requirements of liquid silicone performance in different application fields, and develop corresponding products to meet market demand.
Market development: After the successful development of the product, market promotion and sales work is also required. This includes formulating appropriate marketing strategies, establishing sales channels, and establishing contacts with potential customers. Through continuous market development and expansion, the wide application and industrialization of liquid silicone products can be promoted.