CONTINUOUS PEROXIDE CROSS-LINKING OF LOW DENSITY POLYETHYLENE
BY SHEAR HEAD METHOD

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GHASEMI ESMAEIL; MORSHEDIAN J.

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Journal Paper

Paper Information

Journal: Iranian Polymer Journal Year:2004 | Volume:13 | Issue:2 Page(s): 137-142

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Information Journal Paper

Title

CONTINUOUS PEROXIDE CROSS-LINKING OF LOW DENSITY POLYETHYLENE BY SHEAR HEAD METHOD

Author(s)

GHASEMI ESMAEIL | MORSHEDIAN J. | Issue Writer Certificate

Keywords

CONTINUOUS CROSS-LINKING

LDPE

DICUMYL PEROXIDE

SHEAR HEAD

EXTRUSION

Abstract

There are many different methods for production of peroxide cross-linked polyethylene in the form of pipe, cable, sheet, etc. In this study SHEAR HEAD as a new approach method was applied for CONTINUOUS CROSS-LINKING of low density polyethylene. The SHEAR HEAD was designed and constructed and coupled with a modular single screw extruder.The screws of SHEAR HEAD were Maddock, Egan and Troester with 0.4mm gap. The highest increment in temperature of compound was around 30°C in SHEAR HEAD for Maddock screw. Cross-linking was confirmed by gel fraction and mechanical properties tests. The highest gel fraction was related to 2 wt% of DICUMYL PEROXIDE (DCP) and Maddock screw. With increasing of DCP tensile strength and elongation at-break increased. The highest increment in tensile strength belonged to samples with above 70% gel fraction (2 wt% DCP and Maddock screw). Due to stretching and chain orientation of polymer compound in SHEAR HEAD (by high speed rotation of screw in short die land) these properties increased continuously to high gel fraction (90 %). If this method were coupled with other commercialized methods, the efficiency of cross-linking reaction of low density polyethylene and the quality of product would be better. In such case the energy consumption would also be lowered and the length of the production lines would be considerable shortened than the current methods.

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APA: Copy

GHASEMI, ESMAEIL, & MORSHEDIAN, J.. (2004). CONTINUOUS PEROXIDE CROSS-LINKING OF LOW DENSITY POLYETHYLENE BY SHEAR HEAD METHOD . IRANIAN POLYMER JOURNAL (ENGLISH), 13(2), 137-142. SID. https://sid.ir/paper/528424/en

Vancouver: Copy

GHASEMI ESMAEIL, MORSHEDIAN J.. CONTINUOUS PEROXIDE CROSS-LINKING OF LOW DENSITY POLYETHYLENE BY SHEAR HEAD METHOD . IRANIAN POLYMER JOURNAL (ENGLISH)[Internet]. 2004;13(2):137-142. Available from: https://sid.ir/paper/528424/en

IEEE: Copy

ESMAEIL GHASEMI, and J. MORSHEDIAN, “CONTINUOUS PEROXIDE CROSS-LINKING OF LOW DENSITY POLYETHYLENE BY SHEAR HEAD METHOD ,” IRANIAN POLYMER JOURNAL (ENGLISH), vol. 13, no. 2, pp. 137–142, 2004, [Online]. Available: https://sid.ir/paper/528424/en

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