Extrusion & Post
13 visualizações
DSTDP blended with incompatible resins delamination
Fenómeno do problema
DSTDP blended with polar resins such as PA/ABS, extrudate completely delaminates, mechanical properties extremely poor
Análise das causas
DSTDP and polar resins have large polarity difference, compatibility is zero, interfacial adhesion extremely low, no compatibilizer used
Solução
1) Use DSTDP graft compatibilizer DSTDP-g-MAH 2-5wt%; 2) add epoxy-type compatibilizer 1-2wt%; 3) keep DSTDP addition <10wt% to keep the other resin as the continuous phase; 4) twin-screw high-shear compounding to disperse DSTDP <0.3μm
Conclusão principal
Blends with large polarity differences require reactive compatibilizers that form chemical bonding at the interface to solve
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!