Preparation and performance of PE⁃HD compatibilizer and adhesive resin through binary monomer grafting

doi:10.19491/j.issn.1001-9278.2022.04.007

Abstract

Abstract:

Di?butyl maleate （DBM） and maleic anhydride （MAH） as a polar monomer were grafted onto high?density polyethylene （PE?HD） though melt extrusion with a twin?screw extruder using diisopropylbenzene peroxide （BIBP） as an initiator. The PE?HD?g?（DBM?co?MAH） copolymer containing binary polar monomers was prepared as a compatibilizer， and its chemical structure was characterized using Fourier?transform infrared spectrometry. The effects of the mass ratio of monomers and the initiator concentration on the melt flow rate and grafting rate of the compatibilizer were investigated. An adhesive resin was prepared through melt extrusion of the resultant compatibilizer with PE?HD， linear low?density polyethylene， and poly（ethylene?vinyl acetate） resin， and its toughness， strength， and adhesion of the adhesive resin were evaluated by adjusting the mass ratio of matrix resins and the compatibilizer amount. The results indicated that DBM and MAH could be grafted onto PE?HD with the initiation of BIBP. The grafting rates of compatibilizer were 0.73 wt% for DBM and 0.76 wt% for MAH at a mass ratio of DBM to MAH of 1 to 2. When 10 % compatibilizer was added into the adhesive resin， its properties were optimal and could meet the requirements of the adhesive resin for steel wire pipe according to the national standard.

Key words: binary monomer, compatibilizer, grafting rate, adhesive resin

CLC Number:

TQ325.1⁺2

LIU Guangyuan, ZHAI Qianchao, WANG Fengwu, WANG Yihui, ZHENG Debao, CHEN Xiangying, ZHANG Zhongjie. Preparation and performance of PE⁃HD compatibilizer and adhesive resin through binary monomer grafting[J]. China Plastics, 2022, 36(4): 35-42.

Figures/Tables 12

References 20

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