Polyolefin resin composition special for tubing

A polyolefin resin composition special for tubing comprises, calculated by the weight of high density polyethylene being 100%, 1) 100% of the high density polyethylene; 2) 8%-18% of a ULDPE-g-HEMA graft; and 3) 5%-12% of a chloroprene rubber. The ULDPE-g-HEMA graft contained in the composition is pr...

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Bibliographische Detailangaben
Hauptverfasser:	HE YING, BAI JINGBING, QIAO TONGSEN, LI WEI, WEI FUQING, XUE XUHUI, NIU CHENGXIANG, LIANG TIANZHEN, YANG SHIYUAN, WANG JUNQI, TAN DUNLI, GAO YANGGUANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THEIR PREPARATION OR CHEMICAL WORKING-UP THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A polyolefin resin composition special for tubing comprises, calculated by the weight of high density polyethylene being 100%, 1) 100% of the high density polyethylene; 2) 8%-18% of a ULDPE-g-HEMA graft; and 3) 5%-12% of a chloroprene rubber. The ULDPE-g-HEMA graft contained in the composition is prepared by using bromine as an initiator through a reactive extrusion process for graft. The ULDPE-g-HEMA graft and CR with specific contents are added to HDPE, and extruded and granulated by a twin-screw extruder to obtain the polyolefin resin composition for tubing. The method improves environmental stress cracking resistance (more than 5000 hours) of the high density polyethylene, and expands application of the high density polyethylene to tubing or other fields. The invention further discloses a preparation method of the resin composition.