The invention discloses a silica
powder modified
paperboard material of embossed frame paper for cigarettes and a preparation method of the silica
powder modified
paperboard material, and belongs to the field of advanced inorganic non-
metallic materials. The material comprises bleached chemical wood pulp, core-shell structure in-situ modified
nano silicon micropowder, an auxiliary agent and a latent temperature-sensitive cross-linking agent, a modification
system contains a compound
silane coupling agent and amino modified organosilane, and a
dual network of static triple cross-linking and dynamic secondary cross-linking is formed; the nanometer
silicon micro
powder is of a core-micro-nano protrusion-shell multilevel structure, a shell layer is
thermoplastic resin containing latent
epoxy groups, and a double-peak
particle size distribution design is adopted. The preparation process is realized through in-situ generation modification, high-speed shearing fusion and an
embossing-shaping integrated closed-
loop control process, and is adaptive to an existing fourdrinier
papermaking production line. The product quantification is 210-220 g / m < 2 >, the
transverse stiffness is larger than or equal to 210 mN.m, the
embossing retention rate is larger than or equal to 99.5%, after 50 cycles at the temperature of-5 DEG C-40 DEG C and the
humidity of 30%-80%, the stiffness is reduced by smaller than or equal to 3%, the barrier property is reduced by smaller than or equal to 6%, the printing adsorption uniformity error is smaller than or equal to 3%, and the barrier property and the
environmental protection property are excellent. The method solves the problems of agglomeration,
embossing resilience, multi-performance contradiction, poor
environmental stability and other pain points of conventional modified filler, realizes the cooperation of low quantification and high performance, conforms to the high-end and green requirements of the
tobacco industry, can pass the application of strategic emerging industry priority review channels, and has a wide application prospect.