Based on analysis of the logical key hierarchy(LKH) scheme and in combination of the superiority that the polynomial expansion performs well in small scale multicast,a modified key management scheme PE-RLKH is proposed.

Application of Macromolecule Materials PE and PO in Ammonium Sulphide System in the Coking Plant;

Fast discriminative analysis of PE and PVC food wrap films by evolved gas analysis-mass spectrometry;

Study on PSBR/PE Blending Thermoplastic Elastomer by Dynamic Vulcanization;

Carbon black(CB) was added into poly(ethylene terephthalate)/polyethylene(PET/PE) blend by discretely feeding technology and fiber grade PET/PE/CB conductive master batch with good combined properties was prepared in reciprocating pulsation extruder.

A series of PP ( propylene - ethylene copolymer) /PE ( high density polyethylene) blends with different melting flow rate ratio (RM=MFRpp/MFRPE ) were obtained by matching PP and PE with different melting flow rates (MFR).

For the sake of preventing reuniting of polyethylene,the polyethylene is dispersed with rapid cutting and the admixture is added,which can graft into polyethylene in milling process.

On the present situation and prospect of the application of PE pipe;

On the application of PE pipe in urban water supply and drainage works;

Application of PE pipe in Sheshan human drinking water supply project;

Development of durable water-repellent PP/PE heat-adhesive fiber;