In the field of raw materials for the production of chemicals, a dispersant plays an important role in improving the stability of a substance, preventing agglomeration and precipitation, and thereby improving the performance of a product. The following is a manufacturing method of a dispersant.
I. MATERIALS AND EQUIPMENT
1. Main raw materials: acrylic acid, methyl methacrylate, styrene, butyl acrylate and the like.
2. Auxiliary raw materials: emulsifier, initiator, cross-linking agent and so on.
3. Equipment: reaction kettle, stirrer, thermometer, drip device, etc.
2. Manufacturing steps
1. Ingredients: Prepare the main raw materials such as acrylic acid, methyl methacrylate, styrene, butyl acrylate and auxiliary raw materials such as emulsifier, initiator, cross-linking agent, etc., according to the predetermined formula.
2. Emulsification: Add the main raw materials and emulsifiers into the reactor and stir well to form pre-emulsion.
3. Polymerization: Add initiator into the pre-emulsion and raise the temperature to a predetermined temperature, so that the monomers will undergo free radical polymerization reaction to produce polymer.
4. Post-treatment: After the polymerization reaction is completed, lower the temperature, add dispersant and stabilizer, and mix well. Then carry out post-treatment steps such as filtration, washing, drying, etc. to obtain dispersant products.
3. Precautions
1. Strictly control the reaction temperature and time to prevent the product performance from being unstable.
2. Make sure the equipment is clean to prevent impurities from entering the product.
3. Pay attention to safety during operation, avoid direct contact with initiator and other harmful substances.
Four, performance testing
After the manufacturing is completed, the performance of the dispersant needs to be tested, including dispersibility, stability, viscosity and other indicators to ensure that the product meets the predetermined performance indicators.
The above is a basic dispersant manufacturing method, the specific steps may vary due to different product types and equipment. In the actual production process, it is also necessary to optimize and adjust the manufacturing method according to the specific situation.
