7results about How to "Prevent photoaging" patented technology

The invention discloses an anti-aging composition for preventing light aging and application thereof, the anti-aging composition comprises a Rosa rugosa extract, a Caesalpinia spinosa fruit extract, a sunflower bud extract and a Pseudoalteromonas fermentation product extract, and the anti-aging composition can be added into various skin care products to reduce cell damage caused by light radiation such as ultraviolet light, infrared light and blue light; in sunscreen cosmetics, the sunscreen effect can be improved, the use amount of chemical sunscreen agents and physical sunscreen agents is reduced, and the safety and mildness of the sunscreen cosmetics are improved; damage caused by optical radiation is effectively prevented, meanwhile, skin elasticity is improved, skin wrinkles are reduced, and the effect of resisting skin photoaging is achieved. The effectiveness of the composition is proved through a large number of experiments, each component is irreplaceable, the addition range of the composition is also an optimal range, and the effect and cost of the composition are both the optimal range.

The invention discloses a straw powder filled biodegradable composite material and a preparation method thereof, and relates to the technical field of biodegradable composite materials, the preparation method of the biodegradable composite material comprises the following steps: S1, pretreating straw; s2, impurities are removed through winnowing; s3, removing magnetic impurities; s4, cleaning and drying; s5, performing high-pressure steam treatment; s6, drying in the oven and crushing again; s7, adding into a high-speed mixer and mixing; s8, extruding the biodegradable composite material, and cooling and shaping the biodegradable composite material; and S9, cutting and polishing are conducted, and performance testing is conducted. The biodegradable composite material is prepared from agricultural waste, waste accumulation is reduced, sustainable development is promoted, the straw powder filled biodegradable composite material has biodegradability, high strength and good processability, and the straw powder filled biodegradable composite material is suitable for large-scale production. The problems of reducing agricultural wastes, enhancing mechanical properties and environmental protection performance, improving processability and reducing raw material cost can be solved.

The invention relates to an automotive anti-aging recycled polypropylene composite material with good appearance and a preparation method thereof, and the automotive anti-aging recycled polypropylene composite material with good appearance is prepared from the following components in percentage by weight: 10%-90% of a recycled polypropylene mixture, 5%-70% of polypropylene, 1%-25% of a toughening agent, 1%-22% of a filler, 0.2%-0.5% of a weather-proof agent, 0.1%-0.8% of an antioxidant and 0.1%-0.2% of a long-acting antioxidant, 0.1%-1.5% of modified epoxy resin, 0.1%-1.0% of metal deactivator and 0.1%-0.25% of metal carbonate hydrate. The automotive anti-aging recycled polypropylene composite material with good appearance has good heat aging resistance and light aging resistance, has no bad phenomena such as pocking marks, bumps and the like, and meets the use requirements of automobiles.

The application discloses collagen tripeptide and a preparation method and application thereof, and belongs to the technical field of bioengineering. The preparation method comprises the following steps: obtaining bacillus velezensis with high collagenase yield through separation and identification, the bacillus velezensis belongs to probiotics, and high-activity collagenase is obtained through fermentation culture and purification; taking shark cartilage or blue fish skin as raw materials, and obtaining collagen tripeptide through the following steps of combined enzymolysis of alkaline protease and collagenase after pretreatment, inactivation, centrifugal separation and freeze-drying. The collagen tripeptide prepared by the application has a molecular weight of less than 500 Dalton, contains active components such as GHK tripeptide, is easy to absorb and has high safety, and can be used for preparing antioxidant products, anti-inflammatory products, memory-enhancing products or immunity-enhancing products. The application solves the problems of unsafe collagenase source and low collagen tripeptide preparation efficiency, and has a good industrial application prospect.

This invention discloses an impact-resistant polyethersulfone composite material and its preparation method. A modified polymer and a modified filler are melt-blended, and a pretreated film is prepared using a blown film process. The pretreated film and a modified nonwoven fabric are then laminated and hot-pressed to obtain the impact-resistant polyethersulfone composite material. The modified polyethersulfone is formed by the stepwise polymerization of 4,4'-difluoro-diphenyl sulfone and a dihydroxy monomer, and then hindered amine structures are grafted onto the molecular side to obtain the modified polymer. The hindered amine structures can capture free radicals, improving the material's anti-aging properties, while the disulfide bond structure can absorb energy when the material is impacted, enhancing its impact resistance. A modified filler is prepared by coating a composite filler formed from TiO2 and CeO2 with silica, which can efficiently absorb and convert ultraviolet light, improving the material's anti-aging properties. Simultaneously, the interlayer nonwoven fabric structure effectively prevents cracks from directly penetrating to adjacent layers, enhancing the material's impact resistance.

The invention belongs to the technical field of oil paints, and discloses an anti-aging and anti-cracking water-based oil paint, which is prepared from the following components in parts by mass: 15 to 30 parts of pigment, 15 to 25 parts of modified linseed oil, 30 to 55 parts of acrylic resin emulsion, 0.5 to 1 part of PH regulator, 0.5 to 1.5 parts of thickening agent, 1 to 3 parts of nano filler, 0.2 to 0.6 part of anti-aging agent, 0.1 to 0.3 part of preservative and 10 to 20 parts of water. The modified linseed oil is formed by carrying out graft modification on linseed oil and an acrylate monomer; the acrylic resin emulsion is a specific monomer copolymer. Through the synergistic compatibility of the acrylate modified linseed oil and the acrylic resin emulsion, and in combination with the nano filler and the composite anti-aging agent system, the pigment film has good flexibility, uniform film-forming property and structural stability under a thick coating condition, meanwhile, the oxidation resistance and yellowing resistance are improved, and the generation of cracks is effectively inhibited. The oil paint has both aging resistance and cracking resistance.

The invention provides a stainless steel foil surface waterproof roll and a preparation method and application thereof, and belongs to the technical field of waterproof materials. The stainless steel foil surface waterproof coiled material sequentially comprises a stainless steel foil, an epoxy modified bonding transition layer, a modified glass fiber base, modified asphalt and a high-molecular polymer film from top to bottom, and the modified glass fiber base is obtained by modifying the glass fiber base through an epoxy modified bonding agent. Through a multi-layer composite structure of the stainless steel foil, the epoxy modified bonding transition layer, the modified glass fiber base, the modified asphalt and the high-molecular polymer film, a chemically compatible and physically entangled reinforced interface is constructed, and the key problems that a traditional metal surface waterproof roll is weak in interlayer bonding and easy to peel off are cooperatively solved; the overall performance of the waterproof roll is remarkably improved.