Effect of Polyester-type Hyperdispersant on Mechanical Properties Of PP/Inorganic Particle Composite

Hyperdispersants t-ZTPCL and p-ZTPCL, in which poly-e-caprolactone was used as solvatable chain and teraethylen penta-amine or multi-ethylen multi- amine as fixing group, were synthesized and applied to PP/ kaolin clay composite. The effects of the hyperdispersants on the dispersing and reinforcing of the composite were studied. The results showed ZTPCL had obvious reinforcing and dispersing effects on PP/kaolin composite. When the mass perpercentage of t-ZTPCL was 0.5 %-1.0 % or that of p-ZTPCL was 0.5 %-2.5 %, the tensile strength of the composites was obviously higher than that of the composite without hyperdispersant, the tensile strength of partial composite was even higher than that of pure PP. The increase of the tensile strength of the composite by p-ZTPCL (Mn (CTPCL) - 2000) was especially obvious. When the mass perpercentage of p-ZTPCL was 2.0%, the tensile strength of the composite was 7.4% higher than that of pure PP and 22.8 % higher than that of the composite without hyperdispersant.