3results about How to "Barrier delivery" patented technology

The present application relates to wave-absorbing material technical field, specifically to a kind of flame-retardant wave-absorbing material based on polystyrene foam and preparation method thereof.The present application uses one-dimensional magnetic sepiolite fiber and two-dimensional modified graphene oxide as raw material, three-dimensional directional porous structure composite aerogel is prepared by freeze drying, composite aerogel, flame retardant, film forming agent, dispersing agent, defoaming agent and deionized water are obtained to obtain wave-absorbing coating;Foamed polystyrene beads are put into wave-absorbing coating, and after stirring evenly, drying, molding, the flame-retardant wave-absorbing material based on polystyrene foam is obtained.The flame-retardant wave-absorbing material based on polystyrene foam prepared by the present application not only has excellent wave-absorbing performance, but also has excellent flame-retardant performance and mechanical properties.

The utility model discloses a kind of anti scalding double-layer PET milk tea cups, it is related to water cup technical field, including cup body, the cup body upper end is provided with cup cover;The cup body adopts double-layer setting, including outer wall, inner wall, cavity is arranged between outer wall and inner wall;The outer wall adopts PET material, the inner wall adopts modified PCT material;The inner wall upper end edge forms cup mouth ring, the cup mouth ring lower end is provided with connecting groove;The outer wall upper end is connected with connecting ring, the connecting ring is located in connecting groove, and both are connected by high-temperature-resistant sealant;Paste formula thermometer is provided in the cavity.The utility model design structure is reasonable, it passes through and adopts double-layer cup body structure, outer wall adopts PET material, inner wall adopts modified PCT material, cavity is set in the middle, can effectively block heat transfer, play good anti scalding effect, while inner wall modified PCT high-temperature-resistant characteristic, avoid the risk of harmful substance migration caused by PET directly contact high-temperature beverage.

The application discloses a kind of fire-retardant lignin-based formaldehyde-free adhesive and preparation method thereof, belong to adhesive preparation technical field, for solving in prior art, adhesive bonding strength and flame retardant performance need to be further improved technical problem;The present application is with lignin as main body, sequentially through triazine, phosphonate and nitrogenization modification, introduce nitrogen, phosphorus and polar group, prepare fire-retardant glue precursor, then combine catechol polyol and boric acid reaction generated borate polyol, and the hybrid prepolymer obtained by the action of amino POSS sol and glycerol carbonate, synergistic curing under the action of initiator, construct dense stable crosslinking network, the system has the environmental protection of lignin and the stability of organic-inorganic hybrid material, give adhesive high strength, excellent water resistance and flame retardant performance, and formaldehyde release is zero, suitable for green environmental protection field application.