The defoamer masterbatch directly mixes the masterbatch with the moisture-contaminated plastic tanning material and can be processed and produced. The defoamer masterbatch is widely used in molded products, bag products, sheet products and injection molded products.
There are many methods to solve the problem of masterbatch dispersion, and the use performance of defoamer masterbatch, such as the selection of equipment with better plasticization performance, improvement of masterbatch molding process, selection of better dispersion aids, and increase of dispersant aids and carrier content, etc. Among them, an economical and practical method is to choose better and more suitable dispersing aids. Under the same equipment and process conditions, theoretically speaking, the better the quality of dispersion aids, the higher the grade, the greater the proportion of addition, the better the masterbatch dispersion is, but the cost is not necessarily optimized and the economy is the right way. Dispersing auxiliaries with superior dispersion properties, such as composite dispersants and other cost-effective masterbatch dispersion aids, not only solve the problem of masterbatch dispersion, but also do not increase the cost of masterbatch and products.
Many peers who make masterbatch attributed the above defects to insufficient powder fineness or too little resin carrier. In fact, the root cause was poor masterbatch dispersibility. For example, if the masterbatch of 1250 mesh fineness was added to the same product, it would be dispersed. It is not good, its appearance quality and other mechanical properties are far better than adding finely dispersed 600 mesh fineness masterbatch. As long as the powder in the masterbatch is sufficiently dispersed and uniform, the content of the resin carrier in the masterbatch can be reduced, and the proportion of the masterbatch in the product can also be increased, thereby effectively reducing the cost of the masterbatch and the product.