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The manufacturing method
of modified acrylic emulsion
1. Introduction
modified acrylic emulsion as an important chemical raw material, widely used in coatings, adhesives, fabric treatment and other fields. This paper introduces the manufacturing method of modified acrylic emulsion in detail, including experimental raw materials, experimental equipment, experimental steps, experimental results and discussion. Through reading this article, readers will be able to understand and master the manufacturing process of modified acrylic emulsion and related technologies.
2. Experimental Raw Material
1. Acrylic monomer: As the main component of the emulsion, methyl acrylate, ethyl acrylate and so on are commonly used.
2. modifier: used to improve the performance of the emulsion, such as silicone, fluorocarbon compounds.
3. Initiators: used to initiate the polymerization of monomers, such as persulfates, azo compounds, etc.
4. emulsifier: used to stabilize the emulsion system, such as non-ionic, anionic emulsifier, etc.
3. experimental equipment
1. Stirred reactor: used to mix raw materials and carry out polymerization reaction.
2. Constant temperature water bath: used to control the reaction temperature.
3. pH meter: used to monitor the pH of the emulsion.
4. Electronic balance: used for weighing raw materials.
4. experimental steps
1. acrylic monomer, modifier, emulsifier according to a certain proportion into the stirred reactor, stirring evenly.
2. Nitrogen is introduced to drive out oxygen in the system and prevent polymerization.
3. The stirred reactor is heated to a predetermined temperature and an initiator is added to initiate polymerization.
4. Keep stirring at constant temperature, and stop the reaction when the monomer conversion rate reaches a certain value.
5. Cool to room temperature and discharge to obtain a modified acrylic emulsion.
5. Experimental results and discussion
1. Through experiments, we successfully prepared a modified acrylic emulsion, emulsion stability, uniform particle size distribution.
2. The addition of modifier effectively improves the water resistance, weather resistance and other properties of the emulsion, and broadens its application field.
3. In the course of the experiment, we found that the reaction temperature, the amount of initiator and other factors have a great influence on the performance of the emulsion, and it is necessary to further optimize the process parameters to improve the performance of the emulsion.
6. conclusion
This paper introduces the manufacturing method of modified acrylic emulsion, through experiments, we successfully prepared a modified acrylic emulsion with excellent performance. The experimental results show that the addition of modifier effectively improves the performance of the emulsion, which has a wider application prospect in the fields of coatings, adhesives and so on.