2results about How to "No migration" patented technology

This invention relates to the field of biodegradable packaging film technology, and in particular to a biodegradable packaging film containing mulberry leaf extract and its preparation method. The film is prepared from the following raw materials in parts by weight: 40-60 parts chitosan, 20-30 parts sodium alginate, 10-20 parts gelatin, 1-3 parts nano zinc oxide, 3-8 parts mulberry leaf extract, 0.5-1.5 parts crosslinking agent, 3-6 parts plasticizer, 0.1-0.5 parts nano titanium dioxide, and 0.5-1 parts cellulose nanocrystals. This invention uses chitosan, sodium alginate, and gelatin as biodegradable matrices, and combines them with mulberry leaf extract, nano zinc oxide, nano titanium dioxide, and cellulose nanocrystals. These are crosslinked with a food-grade crosslinking agent to form a dense three-dimensional network. The resulting packaging film possesses biodegradability, high strength and high barrier properties, water resistance, broad-spectrum antibacterial properties, strong antioxidant properties, and highly efficient photocatalytic ethylene removal capabilities. The entire preparation process is green, leaves no organic solvent residue, and is simple to operate.

This invention discloses an anti-corrosion coating with a porous material-supported phase change core and its preparation method, belonging to the field of coating preparation technology. It consists of core functional components, film-forming components, and auxiliary components. The core functional components include porous boron nitride, acid-modified attapulgite, paraffin-decanoic acid eutectic phase change material, and sodium molybdate-benzotriazole composite corrosion inhibitor. The film-forming components include epoxy-organosilicon hybrid resin, polyamide 650, KH550 silane coupling agent, and anhydrous ethanol. The auxiliary components include ammonium polyphosphate-pentaerythritol composite intumescent flame retardant, polydimethylsiloxane, and xylene-n-butanol mixed solvent. This invention's porous material-supported phase change core anti-corrosion coating differs from traditional single-function coatings, achieving integrated corrosion protection, self-healing, and fire resistance, reducing the cost of multi-layer coatings. The multi-level porous carrier has a high loading rate and strong stability. The phase change core material exhibits no leakage or migration, cures at room temperature, is easy to apply, and is compatible with existing coating processes.