Nano silica-modified core-shell acetic acrylic emulsion flame-retardation high-speed cigarette nozzle connecting adhesive and preparation method thereof

Abstract

The invention discloses a nano silica-modified core-shell acetic acrylic emulsion flame-retardation high-speed cigarette nozzle connecting adhesive and a preparation method thereof. The method employsa core-shell emulsion polymerisation method, the butyl acrylate monomer and iso-octyl acrylate-modified acetic acrylic emulsion adhesive are synthesized, the emulsion particles have a core-shell structure having a hard core and a soft shell, persistent adhesivity of the adhesive is guaranteed, film forming temperature is obviously reduced, and primary viscosity is increased; iso-octyl acrylate induced in a shell layer substitutes partial butyl acrylate, the primary viscosity is further increased, and the emulsion viscosity is reduced; a fire retardant and nano silica are introduced into the polymerization process, compatibility with a polymer is increased, dispersion is uniform, so that the acetic acrylic emulsion has better water proofness, stain resistance, and solvent resistance, the prepared core-shell acetic acrylic emulsion is used as the nozzle connecting adhesive, through testing by a M5 cigarette maker, sealing degree of cigarette loading is high, bonding effect is good, andthe flame-retardation self-extinguishing character is obvious.

Description

technical field [0001] The invention relates to the technical field of cigarette adhesives, in particular to a core-shell type vinegar-acrylic emulsion modified by nano-silica and a flame-retardant high-speed cigarette joint glue and a preparation method. Background technique [0002] With the development of tobacco technology, "smoking and safety" and "smoking and health" advocated by the tobacco industry have become a trend and main content. From the perspective of safety, it is required to minimize the damage of smoking (smoke) to the human body, including reducing the pollution of the sidestream smoke of cigarettes to the environment; on the other hand, it is proposed to "reduce the tendency of ignition" of cigarettes to prevent smoking from causing fires . The combustion process of cigarettes belongs to smoldering, flameless, slow and low-temperature combustion process. With the consumption of oxygen in cigarettes, to maintain the combustion of cigarettes, oxygen must ...

AI Technical Summary

Problems solved by technology

However, the flame retardant effect of this method is not ideal due to agglomeration or uneven coating. Therefore, it has become a necessary trend to develop a joint glue with flame retardant, waterproof and aging resistance.