5results about How to "Improve oxygen barrier performance" patented technology

The application belongs to the field of food preservation technology, and relates to a chitosan-gelatin composite preservative solution based on plasma-activated water modification and a preparation method and application thereof. First, PAW is used to prepare chitosan solution and gelatin solution respectively, and the composite preservative solution is obtained after mixing and homogenizing. The coating is dehydrated to form a preservative film. The PAW is prepared by treating deionized water with low-temperature plasma, and is rich in active ingredients such as hydroxyl radicals and hydrogen peroxide, which can effectively modify chitosan and gelatin, enhance intermolecular crosslinking, and form a composite film with a dense network structure. The composite film can be applied to fish preservation through coating or immersion, can effectively inhibit the growth of microorganisms, and can improve the color of fish fillets. In addition, the composite film has the function of delaying protein degradation by inhibiting endogenous protease activity, thereby maintaining the muscle tissue structure and prolonging the shelf life of chilled fish fillets. The application has the advantages of simple process, green safety, remarkable preservation effect, and wide market application prospect.

The utility model discloses a flexible plastic pipeline oxygen resistance comparison test evaluation platform, which comprises a vacuum degassing deaerator, a copper water segregator, a copper water collector, an oxygen bottle and a group of test barrels, a water outlet of the vacuum degassing deaerator is connected with a water inlet of the copper water segregator through a steel pipe, each water outlet of the copper water segregator is divided into two paths, according to the first path, a water outlet of the copper water segregator is connected with a water return port of the testing barrel through a pipeline, a water outlet of the testing barrel is connected with a water inlet of the copper water collector through a pipeline, and a water outlet in the side portion of the copper water collector is connected with a water return port in the side portion of the vacuum degassing and deoxidizing machine through a pipeline. Circulation is carried out in an oxygen-enriched environment in the test barrel, the content of oxygen in the pipeline is detected through the online dissolved oxygen meter, and if data detected and displayed by the dissolved oxygen meter is small, the oxygen content of the detected pipeline is low, and the oxygen blocking effect of the pipeline is good; if the data detected and displayed by the dissolved oxygen meter is large, the oxygen content of the detected pipeline is high, and the oxygen blocking effect of the pipeline is poor.

This invention relates to the field of special high-temperature resistant cable technology, and in particular to a multi-level collaborative protection high-temperature cable with self-sensing early warning and active heat dissipation functions. It includes an intelligent sensing soft conductor core, which is sequentially covered with an active oxygen barrier buffer layer, a phase change energy storage-thermal conductive composite insulation layer, and a microchannel active heat dissipation protective layer. This invention achieves precise positioning and coaxial distribution of the sensing fiber by adding an optical fiber positioning and limiting component to the intelligent sensing soft conductor core, avoiding data distortion caused by fiber misalignment and compression. Combined with a femtosecond laser micro-damage thermal regeneration grating thermal sensing fiber and a zirconia fiber oxygen sensor, it can monitor the conductor temperature field and oxygen permeation status in real time and accurately, transforming the hidden oxidation aging process into quantifiable data trends, achieving early warning of failure, and preventing sudden failures.

This application discloses a high-barrier aluminized composite film for integrated circuit packaging and its preparation method, belonging to the field of metal coating. The high-barrier aluminized composite film for integrated circuit packaging includes a first aluminized PET layer, a first adhesive layer, a second aluminized PET layer, a second adhesive layer, a BOPA layer, a third adhesive layer, and a PE layer arranged sequentially. The aluminized surfaces of the first and second aluminized PET layers are bonded together by the first adhesive layer, which is formed by curing a polyurethane-acrylate base agent and a curing agent. This application has the advantage of obtaining an aluminized composite film with good oxygen and moisture barrier properties and mechanical properties.

The invention discloses an oxygen barrier coating, a preparation method thereof, a packaging material and a package, and belongs to the technical field of food packaging. The preparation method of the oxygen barrier coating comprises the steps that multiple layers of coating are carried out on the surface of a base material at the same time, drying is carried out while coating is carried out, the oxygen barrier component in coating slurry used for coating each layer is PVA, and the number of coating layers is at least two. The preparation method is easy, convenient and environment-friendly to operate, multi-layer coating and drying are carried out on the surface of the base material at the same time by adopting the coating slurry with PVA as an oxygen barrier component, on one hand, the coating can have good uniformity, and on the other hand, the coating can have high binding force. In addition, compared with an existing EVOH co-extrusion mode, the PVA coating mode has the advantages that the cost is reduced, and meanwhile, the oxygen resistance and the tensile resistance of the coating are improved.