• Setas thermal stabilizer additive helps to maintain the polymer property profile during processing and improves the polyester thermal stability at elevated use temperatures.
  • The thermal and thermoxidative degradation rate of PET increases under high shear environments. In many cases, the degradation rate significantly increases due to the joint impacts of the above factors.

 

  IV of the resin after twin screw extrusion (dL/gr) IV of the extruded resin after thermal aging (200 C, 24 hours) (dL/gr)
%100 PET Resin as ref. 0,583 0,521
%0,5 Competitor 1 0,603 0,511
%1,0 Competitor 1 0,603 0,542
%2,0 Competitor 1 0,595 0,514
%0,5 Competitor 2 0,634 0,567
%1,0 Competitor 2 0,638 0,568
%2,0 Competitor 2 0,635 0,587
%0,5 PES 1303 0,625 0,559
%1,0 PES 1303 0,632 0,611
%2,0 PES 1303 0,638 0,615

PES 1303 thermal stabizer performance is compared with two competitors in the market. PET having 0,800 dl/g intrinsic viscosity is extruded in 44 L/D ratio twin screw extruder. The melt temperature is adjusted to 277 C. Screw speed is 350 rpm and the torque is % 80.