Basically, polyurethane dispersions are known as high cost formulations that are used in several applications and even in industries like for resins. These dispersions were earlier made with the help of solvent based method. However, it started causing problems with volatile organic substance release and it further caused other kinds of hazards.
Polyurethane is not soluble in water as it important to have an emulsion or dispersion. An emulsion is a solution which comprises of some fine particles that if not spill out of the solution which comprises of the fine particles. It also does not fall out of the solution and provides chemical properties to the solution. The most apt choice of the production is to have a water based procedure which uses acetone.
You must add the dry polyurethane into a beaker made up of glass and add 250 ml of acetone. Put the emulsifier blender into the beaker and mix it for a period of thirty minutes.
Then you must add the diethanolamine in the blender and continue to mix it for a further period of five minutes. You just need to add 10 ml of amine as this will thicken the solution. If even after five minutes the solution does not get thickened, then you need to add a further of 10 ml and then continue with the process of blending. After this add a similar quantity of monoethanolomine in the beaker and mix it again for five minutes. This will help in the urethane does not get extended further and cause the mixture to solidify.
Sieve the remaining mixture of acetone by using the help of a vacuum distillation unit. You need to run the unit at 100 degrees for thirty minutes. When the procedure is completed, you can add the polyurethane to the water and make a stable and uniform emulsion.
Whenever you use polyurethane dispersions, you must be very careful as any amount is mixed in the wrong place can cause problems. Use it in such a manner that there is no unnecessary spillage.
An epoxy curing agent can also be used in the industries for various reasons. You must understand what kind of material you need to use in the industry and where these materials can be used. Take all the necessary precautions while using them as it will help you to gain an understanding of the chemical and the material that is used.
