33results about How to "Provides antioxidant protection" patented technology

The invention provides a common LED lamp bulb, which comprises a core column and a lamp holder which are in sealing connection with a glass envelope, wherein the bottom part of a hollow metal heat-conducting lamp column is connected with the core column through a heat-conducting adhesive; the side wall of the top part of the hollow metal heat-conducting lamp column is embedded with LED lamp beads; the tail part of the glass envelope is connected with the lamp holder through an external metal radiation piece and a plastic transitional piece; the heat-conducting adhesive is arranged between the tail part of the glass envelope and the metal radiation piece; a heat-conducting gas is charged in the glass envelope. The common LED lamp bulb solves a radiation problem that a component formed by assembling a plurality of groups of LED lamp beads influences the service life of the LEDs in use when a common lamp envelope is adopted.

The invention relates to environmentally-friendly white halogen-free reinforced flame-retardant high-temperature nylon. The nylon comprises the following components in part by weight: 35 to 75 parts of high-temperature nylon resin, 4 to 25 parts of flame retardant, 0.1 to 0.5 part of auxiliary agent and 10 to 50 parts of reinforced material. The preparation method for the nylon comprises the following steps of: 1) drying; 2) mixing; 3) extruding; and 4) molding and pelletizing. The product has the advantages of high strength, high flame resistance, high size stability, high temperature resistance, environment friendliness and the like. An antioxidant can play a role in anti-oxidizing protecting, maintains the stability of materials of the product in production, and protects the flame retardant and the high-temperature nylon resin from oxidative discoloration and decomposition; and a nucleating agent and a lubricating agent can improve the fluidity of the product, speed up the cooling and the forming of the product, improve the production efficiency of the product in injection machining, and contribute to demoulding the products in the injection molding. The environmentally-friendly white halogen-free reinforced flame-retardant high-temperature nylon can be used in circuit breakers, socket connectors such as power connectors, storage card connectors and sockets, motor components, computers and auxiliary equipment thereof, electric products, household electric appliance and the like.

The invention discloses a method for spraying an aluminum oxide-silicon carbide whisker anti-oxidation coating on the surface of a carbon fiber (CF). The method comprises the three steps of CF pretreatment and preparation of Al2O3-SiCw sol, spraying of the Al2O3-SiCw sol on the surface of the CF and heat treatment of the Al2O3-SiCw coating on the surface of the CF. The Al2O3-SiCw (aluminum oxide-silicon carbide whisker) anti-oxidation coating is prepared on the surface of the CF through a sol spraying method, the anti-oxidation performance of the CF under the aerobic atmosphere is improved, and the certain research foundation is laid for preparing a CF/HA composite with the good mechanical performance.

The invention discloses a mild decolorization method of abelmoschus manihot polysaccharide. The method comprises the following steps of S1, preparing abelmoschus manihot corolla powder, S2, preparing degreased abelmoschus manihot corolla powder, S3, preparing a preservation solution, S4, judging whether a protein absorption peak exists or not, S5, preparing crude polysaccharide powder, S6, preparing a polysaccharide concentrated solution, and S7, preparing decolorized abelmoschus manihot polysaccharide powder, and measuring the content of components of the abelmoschus manihot polysaccharide powder; The method has the beneficial effects that the corolla of the abelmoschus manihot is ground and crushed, washed and degreased by acetone and absolute ethyl alcohol, repeatedly extracted for multiple times, subjected to calcium chloride and pH control and dialyzed by a dialysis bag, so that protein is precipitated and separated from a polysaccharide solution, and finally, the disodium ethylene diamine tetraacetate and the exchange resin are combined, so that the structure of the polysaccharide is not damaged, the activity is not lost, the decolorization rate is improved, the loss rate of the polysaccharide is relatively low, and the utilization efficiency of the device is improved.

The invention discloses an artichoke polyphenol-chitosan nanoparticle starch gelatin composite film and a preparation method and application thereof. Natural edible bio-macromolecular chitosan capableof forming a film and polyphosphates are used for firstly preparing artichoke polyphenol-chitosan-polyphosphate nanoparticles, and then, the nanoparticles are added into starch and gelatin to preparethe artichoke polyphenol-chitosan nanoparticle starch gelatin composite film. The edible film obtained by the invention has good film forming characteristics, has good barrier property and tensile strength, has anti-oxidative and anti-bacterial effects, can be applied to packaging of fruits, vegetables and the like, is an innovative edible film, and belongs to an innovative food packaging technology.

The invention discloses a proliferation culture medium for human skin fibroblasts. The proliferation culture medium comprises a basal culture medium and an additive. The additive comprises the following raw materials of insulin, inositol hexaphosphate, germinated brown rice powder, feruloyl glycan, nano-zinc oxide, chitin and sodium selenite. The proliferation culture medium for the human skin fibroblasts is clear in components, free of exogenous serum and animal-derived protein and higher in safety. The inositol hexaphosphate and germinated brown rice powder in the additive are beneficial tomaintaining the proliferation stability of the human skin fibroblasts in the proliferation process and increasing the cell growth rate. The feruloyl glycan and nano-zinc oxide in the additive can improve the proliferation activity of the human skin fibroblasts and avoid cell apoptosis, so that the proliferation efficiency is improved. The chitin and sodium selenite are also added, so that an antioxidant protection effect on cells is achieved. The invention further provides a preparation method of the proliferation culture medium for the human skin fibroblasts. The preparation process is simpleand convenient, and commercialization is facilitated.

The invention relates to health powder containing kudzu root. The health powder is prepared from the following raw materials by a weight ratio: 40-60 wide kudzu root, 10-30 big red dates and 10-30 carrot. The invention also relates to a preparation method of the health powder containing the kudzu root.

The invention discloses a method for reducing the dielectric loss of a large-current high-voltage bushing, and belongs to the technical field of transformer equipment. The method for reducing dielectric loss of a large-current high-voltage bushing comprises the following steps: firstly, assembling the large-current high-voltage bushing; brushing an anti-oxidation protective agent on a silver-plated layer of a conductor of the large-current high-voltage bushing; sealing and wrapping a thin film layer, and putting the large-current high-voltage bushing into a drying oven for vacuum drying; and carrying out oiling and pressure impregnation on the large-current oiled paper condenser bushing and the like. Oxidation discoloration or falling of the silver-plated layer of the conductor on the large-current high-voltage bushing can be avoided in the vacuum drying process, so that the large-current high-voltage bushing can be integrally subjected to vacuum drying and insulation treatment after being assembled, and the dielectric loss of the large-current high-voltage bushing is effectively reduced; and the anti-oxidation protective agent is a carbon-based anti-oxidation protective agent, and the anti-oxidation protective agent can permeate into the conductor silver-plated layer, so that the surface of the conductor silver-plated layer is compact, and the anti-oxidation protection effect on the conductor silver-plated layer is achieved.