The application methods of silicone masterbatch mainly include the following steps:
First, the preparation stage
Select the appropriate silicone masterbatch:
According to the color requirements and applications of silicone products, select the appropriate silicone color masterbatch.
Consider the performance indicators such as heat resistance, weather resistance and migration resistance of the silicone masterbatch.
Prepare silicone raw materials:
Prepare the silicone raw materials that need to be colored.
Ensure the dryness and cleanliness of the silicone raw materials to avoid impurities affecting the dispersion of the silicone color masterbatch.
Second, the mixing stage
Determine the proportion:
The addition ratio of the silicone masterbatch is determined based on the tinting strength of the silicone masterbatch and the color absorbency of the silicone raw material.
Generally speaking, the addition amount of silicone masterbatch is between 1% and 10%, and the specific proportion needs to be adjusted according to the actual situation.
Mix evenly:
Mix the silicone masterbatch evenly with the silicone raw materials.
Mechanical stirring or manual stirring can be adopted to ensure that the silicone masterbatch can be fully dispersed in the silicone raw materials.
During the mixing process, it is necessary to pay attention to controlling the temperature and stirring time to avoid affecting the performance of the silica gel masterbatch.
Third, the forming stage
Processing and forming
Process and shape the evenly mixed silicone raw materials, such as injection molding, extrusion, blow molding, etc.
During the processing, parameters such as temperature and pressure need to be adjusted according to the process requirements to ensure the coloring effect and physical properties of silicone products.
Vulcanization molding
Vulcanization molding is carried out under appropriate technological conditions.
It is recommended that the vulcanization temperature be between 165 and 190℃. The specific temperature should be determined based on the characteristics of the silicone masterbatch and the silicone raw materials.
During the vulcanization molding process, it is necessary to pay attention to controlling the time and temperature to ensure the complete curing and color stability of the silicone products.
Fourth, follow-up handling
Cleaning and Maintenance
The formed silicone products should be cleaned to remove impurities and residues on the surface.
Pay attention to the maintenance of silicone products and avoid prolonged exposure to direct sunlight and high-temperature environments to maintain the stability of their color and performance.
Storage and transportation
Silica gel color masterbatches should be stored in a dry, well-ventilated and dark environment, avoiding moisture, heat and contamination.
During transportation, handle with care to avoid collision and damage.
The formed silicone products should also be properly stored and transported to maintain their quality and color stability.
Fifth, Precautions
During the use of silicone masterbatch, it is necessary to strictly abide by the relevant safety regulations and operating procedures.
Wear appropriate protective equipment, such as gloves and masks, to prevent the silicone masterbatch from causing harm to the human body.
Regularly inspect the quality and performance of the silicone masterbatch to ensure it meets the usage requirements.
By following the above usage methods and precautions, the best performance and effect of silicone masterbatch in the coloring process of silicone products can be ensured.
