Study on preparation and bonding properties of natural rubber latex grafted and modified by HEMA
Abstract:With hydroxyethyl methacrylate (HEMA) as graft modifier of natural rubber latex (NRL),a NR-g-HEMA[NR(natural rubber) grafted by HEMA] latex was prepared by emulsion polymerization.Then,with NR-g-HEMA latex as matrix,water-soluble rosin resin as tackifying resin,and dibutyl phthalate(DBP) as plasticizer,a corresponding NR-g-HEMA adhesive was prepared.Finally,the plywood was pressed by the adhesive,and the bongding properties of plywood were mensurated.The results showed that the optimal process conditions of preparing NR-g-HEMA latex were preferred by single-factor experiment method when mass ratio of m(dry monomer)∶m(NRL)∶m(initiator)∶m(activating agent)∶m(cross linker) was 20∶100∶0.2∶0∶2∶0.1,reaction time was 8h and reaction temperature was 16℃.Here,the shear strength (1.88MPa) of corresponding plywood could meet index requirement of Ⅲ class-plywood.
NETL
NSTL
万方数据
维普
