Woon, Hon Wei
(2005)
Investigation On The Properties Of
Thermoplastic Elastomers (Tpes) Based
On Blends Of Recycle Polyethylene (Rpe)
I Ethylene-Propylene-Diene Terpol Ymer
(Epdm).
Masters thesis, Universiti Sains Malaysia.
Abstract
Polietilena kitar semula (rPE) telah diadun dengan etilena propilena
diena terpolimer (EPOM) untuk menghasilkan elastomer termoplastik. Oi dalam
siri pertama, adunan dengan menggunakan polietilena baru (rPE) juga turut
disediakan. Semua adunan disediakan dengan menggunakan Haake Rheomix
pad a suhu 180 DC dan kelajuan 50 putaran per minit. Kajian selanjutnya
berkenaan kesan penggantian separa vPE oleh rPE di dalamadunan
vPE/rPElEPOM pada nisbah adunan tetap 70:30 daripada adunan plastik (vPE
+ rPE) dan EPOM telah dijalankan. Selain itu, kesan terhadap pemvulkanan
dinamik (sulfur) dan pembebanan pengisi (hitam karbon, silika dan kalsium
karbonat) ke atas adunan vPE/rPElEPOM (40/30/30) telah dijalankan secara
berasingan. Keputusan menunjukkan bahawa pada kandungan EPOM yang
sarna, adunan rPE/EPOM mempunyai kekuatan tensil, modulus Young,
kestabilan tork "dan kestabilan terma yang tinggi tetapi pemanjangan pad a takat
putus yang rendah berbanding adunan vPE/EPOM.
Recycle polyethylene (rPE) was used to prepare thermoplastic elastomer
(TPE) by incorporating it with ethylene propylene diene terpolymer (EPDM). A
similar series of blends were also formulated by using virgin polyethylene (vPE).
All the blends were prepared by using a Haake Rheomix at 180°C and 50 rpm
Further studies were done on the effect of partial replacement of vPE with rPE
in vPE/rPEJEPDM blends at a fixed 70:30 blend ratio of plastics (vPE + rPE)
and EPDM. Besides, the effect of dynamic vulcanization (sl!lfur) and fillers
loading (carbon black, silica and calcium carbonate) were performed separately
based on vPEJrPEJEPDM (40/30/30) blends. The results indicated that at a
similar EPDM content, rPEJEPDM blends have higher tensile strength, Young's
modulus, stabilization torque and thermal stability but lower elongation at break
than vPEJEPDM blends.
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