Research on Preparation of Cationic Polyacrylate Emulsion Paper Strengthening Agent

Abstract

Strengthening agent of cationic polyacrylate emulsion was prepared through semi-continuous seeded pre-emulsion processes. By single factor experiment, investigated the factors which influence on properties of emulsion, such as the proportion of hard and soft segment monomer, the dosage of AM, DMDMAC, emulsifier and initiator, reaction time and temperature, addition time and other factors. The results show that the emulsion has a good enhancement when the monomer ratio of St: MMA: BA is 2:1:3, initiator dosage is 0.7%, the dosage of emulsifiers, AM and DMDMAC are 6%, the amount of protective colloid is 0.3%. Compared to the strength performance between paper with added emulsion and blank paper, find that the performance of paper with added emulsion polymer gets different improves: paper quantitative increase 4.08%, folding strength degree improves 66.67%, tearing degree improves 356.52%, ring compressive strength improves 50.00%, tensile strength improves 44.11%, and bursting strength improves 50.88%

Preparation and properties evaluation of shape memory epoxy asphalt composites with high toughness and damping

“…These studies mostly cover aspects of SMP like multifunctional SMP, 12 SMP composites, 13 SMP foam, 14 SMP fibers, 15 and SMP characterization 16 . SMP has been manufactured and applied to critical civil infrastructure applications such as cement concrete sealants, rutting resistant asphalt concrete materials, and self‐repairing damaged structure materials 17–19 . Li et al 20 proposed an intelligent sealing agent based on SMP for compression sealing joints in concrete pavement systems.…”

“…16 SMP has been manufactured and applied to critical civil infrastructure applications such as cement concrete sealants, rutting resistant asphalt concrete materials, and self-repairing damaged structure materials. [17][18][19] Li et al 20 proposed an intelligent sealing agent based on SMP for compression sealing joints in concrete pavement systems. They also developed an SMP-based composite foam with a sandwich structure at its core, which is designed to repeatedly self-repair impact damage.…”