Unfortunately, no plasticizer is perfect, so let's not just focus on the shortcomings of plasticizers.
For example, DBP has an excellent plasticizing effect, but the flash point is low, and it is very easy to appear smoke during processing. Perhaps the following solutions can be considered: First, reduce the mold temperature, or add a little DOP to increase the flash point.
The use of DBP for shoe materials is to take a fancy to its flexibility, but there are also disadvantages that the product is poor weather resistance and brittleness, so many people mix DOP to DBP. For example, DOP is expensive, and many people use chlorinated paraffins/ESBO to reduce costs. DOTP is expensive, plasticizing is not good, compatibility is not good, many people will be paired with bio-based plasticizers to reduce costs and improve its plasticizing and compatibility.
So for plasticizers, the combination is king. A single plasticizer is necessarily flawed, and only by adding all the advantages together can the real power of plasticization be played.