Most of the carriers for non-woven fabric masterbatch are polypropylene (PP), which has thermal sensitivity. If you want to improve the melt index of non-woven fabric masterbatch, there are three methods to try. Below, the editor of Jisi will briefly introduce them to you.
The simplest method that does not require any additives – overheating
It means that during high mixing, the temperature should be high, or during twin-screw or internal mixing, the temperature should be high. By utilizing the degradation of polypropylene, the melting point can be raised by a portion, which is the simplest and does not require any additives.
Use some highly mobile carriers as masterbatch
Although we also have some high melt index additives suitable for non-woven fabric masterbatch at home, we do not recommend non-woven fabric masterbatch manufacturers to use a lot of wax or additives to improve melt index. Due to the special nature of non-woven fabric masterbatch, using wax and additives to improve melt index often causes accidents downstream. Therefore, we do not recommend using additives to improve melt index for non-woven fabric masterbatch. It is best to use carriers to improve melt index. For carriers, you can choose some special high melt index 100 or 150 melt index. Some refineries may produce polypropylene with melt index of 100-150, which can be used as carriers.
Add some peroxides to increase melt index
Using peroxide to improve melt index is a double-edged sword. Peroxides are the main components of our commonly used cooling masterbatch, including peroxides such as bis (2-ethylhexyl) phthalate, di tert butyl phthalate, and DCP. Adding a few thousandths of these peroxides can increase the cost by a small amount, which can greatly improve the melt index of your masterbatch. However, at the same time, it will degrade the entire system and affect its mechanical properties to a certain extent. Therefore, this should be used with caution.
Conclusion
In fact, non-woven fabric masterbatch generally does not need to have a very high melt index. If you are making products with ultra-high fluidity or very fine threads, you need to have a very high melt index. Ordinary non-woven fabric masterbatch does not need to have a very high melt index. If you really want to improve the melt index, such as increasing the melt index of non-woven fabric masterbatch from 20 to 100, then follow the above three methods.
Dongguan Liansheng Nonwoven Fabric Co., Ltd., a manufacturer of non-woven fabrics and non-woven fabrics, is worthy of your trust!
Post time: Dec-11-2024