35results about How to "High degree of aging resistance" patented technology

The invention relates to a lyophilized vaccine for swine encephalitis B. The lyophilized vaccine consists of Japanese encephalitis virus serving as an antigen, and a protective agent, wherein the protective agent is prepared from the following substances in percentage by mass: 2.4-4% of NZ-amine, 0.3-0.5% of mono-potassium glutamate, 16-20% of sucrose, 6-20% of lactoalbumin hydrolysate, 1-1.6% of gelatin and the balance of water. According to the vaccine disclosed by the invention, the used lyophilized protective agent is made from raw materials which are low in cost, and the operation is simple, so that the vaccine can be produced in a large scale. After the vaccine prepared from the protective agent is stored for 24 months at the temperature of 2-8 DEG C, the potency of the vaccine is not smaller than 10<5.7>TCID50/head (Chinese Standard), so that the storage life of the vaccine is prolonged effectively.

The invention relates to a freeze-drying protective additive which is composed of 1 to 2% of NZ-Amine AS, 0.1 to 0.2% of monosodium glutamate, 5 to 10% of saccharose, 1 to 2% of M199, 0.1 to 0.3% of trehalose, 8 to 15% of hydrolyzed gelatin, and the balance of water. The freeze-drying protective additive is used for preparing a freeze-dried pseudorabies vaccine. A heat-resisting protective agent can minimize the damage of various physical and chemical factors of a product to virus activity during sub-packaging and freezing-drying processes, greatly reduces the titer loss of the virus before and after freezing and drying and keeps the loss of being not greater than 0.2 titer. A heat-resisting protective agent live vaccine is high in degree of resistance to aging, the loss ratio of the virus kept for 10 days under a condition of 37 DEG C is not greater than 0.5 titer; the heat-resisting protective agent live vaccine can be stored for 24 months at 2 to 8 DEG C, the titer of the vaccine is reduced a little, so that the problem that the vaccine in general transporting and storing needs strict cold chain condition, which leads to energy waste and inconvenient storage, can be solved effectively.

The invention relates to a newcastle disease and avian infectious bronchitis bigeminal live vaccine heat-resisting freeze-drying protective agent and a preparation method. The newcastle disease and avian infectious bronchitis bigeminal live vaccine heat-resisting freeze-drying protective agent provided by the invention comprises the following components: 1-2% of sodium carboxymethylcellulose, 2-8% of xylo-oligosaccharide, 1-3% of sorbitol, 0.5-0.8% of sodium glutamate, 0.1-0.5% of sodium selenite and the balance of water for injection. The heat-resisting freeze-drying protective agent provided by the invention solves the problem that the newcastle disease and avian infectious bronchitis bigeminal live vaccine can not be stored for a long time and transported at 2-8 DEG C.

The invention relates to a heat-resisting freeze-dried protective agent for a live vaccine for chicken infectious bursal diseases and a preparation method for the heat-resisting freeze-dried protective agent. The heat-resisting freeze-dried protective agent for the live vaccine for chicken infectious bursal diseases is prepared from the following components in percentage by weight: 2 to 3 percentof sodium carboxy methyl cellulose, 3 to 6 percent of xylo-oligosaccharide, 2 to 3 percent of polyvinylpyrrolidone, 0.5 to 0.8 percent of glutamine, 0.1 to 0.5 percent of sodium selenite, 0.01 to 0.05 percent of potassium chloride and the balance of water for injection. By the heat-resisting freeze-dried protective agent, the technical problem that the live vaccine for chicken infectious bursal diseases cannot be stored and transported for long time at the temperature of between 2 and 8 DEG C is solved, production process is simplified, and production cost is reduced.

The invention relates to a macromolecular composite material decorative plate and belongs to the technical field of production of macromolecular composite materials. Raw materials of the macromolecular composite material decorative plate are adequately mixed to form a ball-shaped prepreg based on glass fiber and unsaturated resin as a base material and various additives as supplement, and the prepreg is stirred and compressed at high temperature to generate products in different colors, wherein the raw materials comprise the components in percentage by weight as follows: 88-90% of unsaturated polyester resin, 1.5-2.5% of formyl peroxide, 1.0-1.8% of magnesium oxide, 3.0-3.5% of calcium carbonate, 1-2% of inorganic silver, 1.5-2% of release agent and 1-1.5% of coloring agent; and the proportion of glass fiber and the mixed material mainly based on unsaturated polyester resin is 50-60:40-50 in parts by weight. The specific manufacturing process of the decorative plate comprises the following steps of: preparation of the mixed material, glass fiber processing, manufacture of decorative plate ball-shaped material, high-temperature mould pressing and moulding and putting into a warehouse. According to the decorative plate provided by the invention, no combustible materials are added from manufacture to installation, so that fire accidents are completely avoided; and the formula proportion and the preparation process of the raw materials are improved, so that the strength and hardness of the product are enhanced, and the anti-aging degree of the product is increased.

The invention relates to a freeze-dried vaccine for porcine reproductive and respiratory syndrome and a preparation method thereof. The freeze-dried vaccine is prepared from a porcine reproductive and respiratory syndrome viral antigen and a protective agent, wherein the protective agent is prepared from the following substances by weight percent: 2-3% of NZ-Amine AS, 0.1-0.3% of glutamic acid mono potassium salt, 10-15% of cane sugar, 1-2% of lactoalbumin hydrolysate, 10-20% of hydrolyzed gelatin, 0.1-0.2% of vitamin C and the balance of water for injection. The heat-resisting protective agent is capable of minimizing injuries caused by various physical and chemical factors to virus activity during processes of sub-packaging and freeze-drying products, so that the titer loss of a virus before and after freeze-drying is reduced to be not more than 0.2 titer; and the live vaccine of the heat-resisting protective agent is high in anti-aging degree, the loss ratio of the virus does not exceed 0.5 titer after the vaccine is preserved for 10 days at the temperature of 37 DEG C, the titer reduction of the vaccine is little after the vaccine is preserved for 24 months at the temperature of 2-8 DEG C, and therefore, the problems of energy waste and preservation inconvenience caused by a strict cold chain condition required in transportation and preservation of conventional vaccines are effectively solved.

The invention belongs to the technical field of decoration materials, and provides a polymeric composite material decoration plate and a production method thereof. Raw materials of the polymeric composite material decoration plate comprise ethylene acrylate, inorganic fibers, benzoyl peroxide, calcium oxide, magnesium carbonate, inorganic silver, a mold release agent and a colorant. All above rawmaterials are specifically proportioned to form a unique formula, and the polymeric composite material decoration plate by the production method has increased strength and hardness and enhanced agingresistance. The polymeric composite material decoration plat has a low thermal conductivity, also has energy saving and environmental protection properties, and has good antibacterial property and good corrosion resistance due to the addition of the inorganic silver.

The invention discloses an LED light strip material with excellent heat resistance and a preparation method thereof. The LED light strip material with excellent heat resistance is prepared from the following ingredients: 35-45 parts of PTT, 20-30 parts of epoxy resin, 15-25 parts of a plasticizer, 12-18 parts of organophosphorus ester, 0.3-0.8 part of a lubricant, 20-28 parts of calcium carbonate,10-16 parts of polyether amine, 0.5-2 parts of maleic anhydride, 3-8 parts of polyethylene glycol, 0.5-1.5 parts of azodiisobutyronitrile, 18-25 parts of TPU and 0.8-1.8 parts of a light absorber. The LED light strip material has the characteristics of high strength and aging resistance.

The invention discloses an anti-aging plastic product containing polyethylene wax. The anti-aging plastic product is prepared from the following raw material in parts by weight: 60 to 80 parts of main material, 2 to 8 parts of silane coupling agent KH-550, 4 to 8 parts of modified polyethylene wax, 40 to 50 parts of filling material, 2 to 4 parts of dicumyl peroxide, 1 to 2 parts of diphenylamine, 1 to 2 parts of polycaprolactone, 1 to 2 parts of phenol formaldehyde resin and 1 to 2 parts of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate. The modified polyethylene wax is prepared by the following steps: adding polyethylene wax into a citric acid sodium solution; heating and stirring; adding agarose; performing ultrasonic treatment; performing microwave treatment; adding a product into liquid paraffin; stirring in an ice water bath to obtain modified polyethylene wax.

The invention belongs to the technical field of PVC board processing, and particularly relates to a decorative composite board and a production process thereof. Aiming at the problems of poor stability and processability of a PVC board during processing, the decorative composite board comprises a bottom board layer, a spray painting coating and a curing coating, the bottom plate layer comprises a high-density PVC plate solid section and a middle section which are formed by an extrusion process, the spray-painted coating is adhered to the upper surface of the middle section of the bottom plate layer, and the cured coating is pressed and adhered to the outer surface of the spray painting coating; and the PVC board is subjected to extrusion molding processing treatment through an extruder, the separability of a mouth mold is improved, and the heat stabilizer, the processing modifier, the impact modifier, the lubricant, the filler and the light stabilizer are added according to a certain proportion during PVC resin processing, so that the stability and processability of the PVC composite board during processing are improved, the processing mechanical load is reduced, the product is smooth, the plasticizing quality of the composite board is improved, the appearance of the composite board is changed, and the rigidity effect of the composite board is improved.