Preparation and applications of POE⁃g⁃MAH compatibilizer for adhesive resins

doi:10.19491/j.issn.1001-9278.2021.12.009

Abstract

Abstract:

In this work， POE?g?MAH as a compatibilizer of adhesive resin was prepared through extrusion with a twin?screw extruder using maleic anhydride （MAH） as a graft monomer， polyolefin elastomer （POE） as a matrix resin， and diisopropyl peroxide （BIBP） as an initiator. The effects of reaction temperature， screw speed and MAH amount on the melt flow rate and graft rate of this compatibilizer were investigated and its applications for adhesive resins were explored. The compatibilizer was characterized and analyzed using melt flow rate meter， Fourier transform infrared spectroscopy， and universal testing machine. An adhesive resin was further prepared through melt extrusion with the compatibilizer， matrix resin and related additives， and its mechanical properties were measured using universal testing machine. The results indicated that MAH was successfully grafted onto POE with the aid of odorless diisopropyl peroxide （BIBP） as an initiator. When 1 wt% MAH and 0.1 wt% BIBP were added， the graft rate of compatilizer reached 0.7 wt%， its melt flow rate reached 0.691 g/10 min.The adhesive resin exhibited tensile strength， elongation at break and peel strength of 14.8 MPa， 1031.1%， and 178 N/25mm， respectively， when 20 wt% compatibilizer was added into the adhesive resin.

Key words: polyolefin elastomer, maleic anhydride, compatilizer, graft rate, adhesive, mechanical property

CLC Number:

TQ325.1⁺2

ZHENG Debao, ZHAI Qianchao, LIU Guangyuan, WANG Fengwu, WANG Yihui, ZHANG Zhongjie, CHEN Xiangying. Preparation and applications of POE⁃g⁃MAH compatibilizer for adhesive resins[J]. China Plastics, 2021, 35(12): 51-57.

Figures/Tables 11

Fig.1. Effect of MAH content on melt flow rate and graft rate of compatibilizer

Fig.2. Effect of temperature on melt flow rate and graft rate of compatibilizer

Fig.3. Effect of screw rotation speed on melt flow rate and graft rate of compatibilizer

Fig.4. FTIR spectra of POE raw material and graft product

Fig.5. FTIR spectra of different grafts

Fig.6. Schematic diagram of application and mechanism of hot melt adhesive in aluminum plastic tube

Fig.7. Reaction mechanism diagram

Fig.8. Linear fitting of characteristic peak area ratio and acid?base titration value

Fig.9. Effect of screw rotation speed on the peel strength of adhesive resin

Fig.10. Effect of temperature on elongation at break of bonded resin

POE?g?MAH含量/%	熔体流动速率/g·（10 min）^-1	拉伸强度/MPa	断裂伸长率/%	剥离强度/N·（25 mm）^-1
10	1.434	11.2	953.4	149
15	1.529	12.8	980.2	158
20	1.668	14.8	1 031.1	178
25	1.653	14.1	998.1	172

Tab.1. Effect of different compatibilizers on bonding resin

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