44results about How to "Antioxidant protection" patented technology

The invention discloses a preparation method of a coaxial cable, which relates to the field of cable processing. The coaxial cable includes an inner conductor, an insulating layer, a shielding layer and an outer sheath, and the insulating layer includes a rubber layer and a foaming layer, wherein , take the oxygen-free copper core as the inner conductor, after straightening, sizing, and ultrasonic cleaning, dry the surface with nitrogen, and then spray the silver paste evenly on the surface of the oxygen-free copper core with a high-pressure spray gun to obtain the inner conductor. The silver-plated coating on the oxygen copper core protects the copper core against oxidation, prolongs the service life, enhances the directionality of signal transmission, and improves the signal quality. A rubber layer is provided outside the inner conductor to reduce the bending flexibility of the coaxial cable , There are heat dissipation holes on the rubber layer, which can help the inner conductor dissipate the heat generated during work, reduce the resistance of long-term work, and increase the current. In the outer sheath, aluminum hydroxide and magnesium hydroxide are added to the outer sheath. Triphenyl phosphite is used as an antioxidant to increase the flame retardant and anti-aging properties of the outer sheath.

The invention discloses an anti-oxidation and anti-static spinning oil, which belongs to the technical field of synthetic fiber additives. On the one hand, the present invention introduces dual flame retardant elements of silicon and phosphorus into the spinning oil to form flame retardant protection on the surface of the fiber after oiling the spinning oil; on the other hand, phosphorus trichloride and alcohol ether compounds are used for phosphorylation, Improves the antistatic effect. The introduction of propylene oxide chain links improves the heat resistance of the spinning oil, which greatly reduces the coking phenomenon on the spinning surface, thereby improving the wool and broken filaments of the fibers. Through the chain link arrangement of the polyether molecular chain, a continuous oil film is formed for spinning protection. Utilizing the introduced amide bond, it has better polarity and stability, and utilizes the branched chain structure of the skeleton structure to uniformly disperse the antioxidant in the oil agent to improve the performance of the spinning oil. The invention solves the problems that the current spinning oil has poor antistatic performance, entanglement and broken ends, and the oil agent is easy to oxidize, which causes the fabric to turn yellow easily.

The invention provides a method for cultivating plants containing salidroside. The method comprises the following steps: spraying p-hydroxyphenylethanol on growing plant leaves, and harvesting to obtain plants containing salidroside. The method provided by the invention has simple steps. The synthetic precursor of salidroside, p-hydroxyphenylethanol, is directly supplied from the outside, and the uridine diphosphate glucose and glucosyltransferase contained in the plant itself are used as raw materials to synthesize the salidroside in the plant. Tianglycoside. The present invention further protects the application of the salidroside-containing plants obtained through cultivation.

The invention provides an induction culture medium for embryogenic callus of hevea brasiliensis and a rapid propagation method for embryogenic callus of hevea brasiliensis, and belongs to the technical field of tissue culture. The induction culture medium is an improved MS culture medium containing 2, 4-D-compounded 6-BA, zeatin, TDZ, coconut milk and sucrose, and greatly increases an induction rate of embryogenic callus. The rapid propagation method for embryogenic callus of hevea brasiliensis comprises the following steps: performing anther primary induction, embryogenic callus induction and somatic embryoid differentiation culture to respectively obtain embryogenic callus and cotyledon-like somatic embryoid; simultaneously inoculating the embryogenic callus and the cotyledon-like somatic embryoid into a proliferation culture medium; and using the cotyledon-like somatic embryoid for nurse breeding, so that the embryogenic callus is proliferated effectively and rapidly. With germination of cotyledon-like somatic embryos, the embryogenic callus is rapidly proliferated, so that the cotyledon-like somatic embryos and the embryogenic callus have good synchronicity and are both in an embryogenic undifferentiated state of the embryogenic callus.

Use of a dietary fibre material extracted from sugar cane in the manufacture of a food product that is formulated to ameliorate the effects of diabetes.

The invention relates to a glaze for a metal product surface and a firing method thereof. The glaze 1) comprises at least one base agent A and 2) may also comprise an assistant B or C, wherein the base agent A comprises 6-9g of potassium carbonate, 4-7g of sodium carbonate, 10-13g of lithium carbonate, 19-24g of zinc oxide, 28-35g of boric acid, 34-41g of silicon dioxide and 3-6g of sodium fluosilicate. The technical scheme has the following advantages: 1. the glaze has favorable acid / alkali resistance, high hardness (up to Hv500-700) and favorable glossiness (70-90%); 2. the fired glaze layer has bright color, and can protect the noble metal vessel from oxidation, thereby enhancing the practicality; the fired glaze layer can also keep the original metallic color and appearance characteristic of the noble metal billet, thereby enhancing the ornamental value; and 3. the raw materials are non-toxic and leadless in the preparation process, thereby satisfying the international safety standard.