34results about How to "Good thermal oxidation resistance" patented technology

The invention relates to the technical field of vehicle materials, in particular to a PP composite material with a low VOC and a preparation method thereof. The PP composite material with the low VOC is prepared from, by weight, 100 parts of polypropylene, 10-30 parts of talcum powder, 5-15 parts of toughening agent, 0.1-0.4 part of nucleating agent, 0.1-0.5 part of main antioxidant, 0.1-0.5 part of auxiliary antioxidant, 0.1-0.5 part of lubricating agent, 0.1-0.5 part of light stabilizer, 1-5 parts of adsorbing agent and 1-5 parts of thermal ageing stabilizer. The preparation method of the composite material has a simple compounding process and a simple processing simple, and the composite material is easy to process and prepare; the feature of the low VOC can be achieved through common equipment, thermal oxidation resistance is quite good, and in other words, pulverization can be avoided even if the composite material stays for 700 hours in an air blast drying oven at the temperature of 150 DEG C.

The invention belongs to the field of chemical synthesis, and particularly relates to high-temperature-resistant polyether polyol and a preparation method thereof. The high-temperature-resistant polyether polyol is characterized by being prepared from the following components in parts by weight: 600-1,000 parts of sorbierite, 300-600 parts of cane sugar, 3,300-3,800 parts of epoxy propane, 10-18 parts of potassium hydroxide, 20-36 parts of phosphoric acid and 140-200 parts of water. The method has the advantages: the prepared high-temperature-resistant polyether polyol is catalyzed by using potassium hydroxide; sorbierite is an ideal starting agent for preparing temperature-resistant polyether; and the polyether polyol synthesized by adopting sorbierite and cane sugar with high functionality has high functionality and low hydroxyl value. Hard urethane foam plastic prepared from polyether polyol has high heat resistance, high size stability, thermal oxidation resistance, oil resistance, bonding property and high size stability.

The invention relates to a halogen-free flame-retardant coating composition which comprises the components: 10-80% of film-forming polymer and 5-70% of inorganic flame-retardant material, and is characterized in that the flame-retardant material comprises flame-retardant filler microparticles and metallic tin benzoate and/or basic metallic tin benzoate, wherein the total PVC (polyvinyl chloride) content in the composition is 75-97%, and the film-forming polymer contains organic silicon resin.

The invention discloses polyphenylacetylene silicon oxide borane and a preparation method thereof. The structure of the prepared polyphenylacetylene silicon oxide borane is shown as a formula I, wherein R1 and R2 refer to CH3, C6H5, and n is 1-100. The preparation method comprises the following steps of: performing hydrogen chloride removal reaction on trichlorosilane and alkyl boric acid to obtain polychlorosilicon oxide borane; and reacting the polychlorosilicon oxide borane with phenylacetylenelithium to obtain the polyphenylacetylene silicon oxide borane. In the polymer, a repeat unit contains polyphenylacetylene, so the magnitude of the polymerization degree cannot influence the crosslinking density of the polymer. The molecular weight of the polymer can be controlled by proportioning raw materials. In high temperature environment, the surface of a material is vitrified, and a ceramic layer such as a silicon carbide layer or a boron carbide layer is formed, so that the inner material is isolated from heat and oxygen; therefore, the thermal oxidation performance of the structural material is improved. The polyphenylacetylene silicon oxide borane is applied to preparing ceramic precursors, high-performance composite material matrixes, ablation resistant materials, high temperature resistant coatings and the like. The formula I is shown in the specifications.

The invention discloses an environment-friendly type fireproof decorative board and belongs to the field of decoration. The decorative board comprises a board body, wherein a side wall of the board body is covered with an environment-friendly type fireproof coating; the environment-friendly type fireproof coating is prepared from the following components in parts by weight: 30 to 50 parts of acrylate emulsion adhesive, 1 to 5 parts of aluminum hydroxide, 2 to 6 parts of ammonium polyphosphate, 1 to 4 parts of mica powder and 2 to 6 parts of sodium hexametaphosphate. The environment-friendly type fireproof decorative board disclosed by the invention has the following beneficial effects that the ammonium polyphosphate has relatively good flame-retarding and smoke-suppression effects; the aluminum hydroxide has three functions of flame retarding, smoke suppression and filling; the ammonium polyphosphate has a strong dehydration effect and the aluminum hydroxide can be dehydrated, crystallized and heated, so that the flame-retarding effect of a flame retarding system is increased, and furthermore, a synergetic effect is generated. The sodium hexametaphosphate has a dispersion effect and each component can be uniformly dispersed in an acrylate emulsion adhesive system, so that the flame-retarding effect of the raw materials of the environment-friendly type fireproof coating is improved; meanwhile, the synergetic effect between the aluminum hydroxide and the ammonium polyphosphate is further improved.

The invention relates to a hot-galvanizing sink roller and a preparation method thereof. The hot-galvanizing sink roller is provided with a base body, wherein the surface of the base body is provided with a protection coating; the protection coating is prepared by an electric spark depositing process; and the material of the protection coating is a ceramic composite material obtained by doping graphite into ZrB2. The preparation method of the protection coating of the hot-galvanizing sink roller comprises the following process steps of: 1) carrying out heat treatment on a stainless steel roller; and 2) depositing electric sparks. According to the hot-galvanizing sink roller and the preparation method thereof, disclosed by the invention, the surface hardness, the wear resistance performance, the fused zinc liquid corrosion resistance performance and the heat oxidization performance of the surface protection coating of the hot-galvanizing sink roller are improved by a lower production cost, and the protection coating is combined with an interface of the stainless steel base body in a metallurgy manner.

The invention discloses oxidation-resistant transformer oil which comprises the following components in percentage by weight: 0.2-1.5 percent of 2,6-butylated hydroxytoluene, 0.02 per mill-0.5 percent of 2-(2'-hydroxy-5'-methyl phenyl) benzotriazole, 5-200ppm of benzotriazole and the balance of transformer base oil. According to the transformer oil, the heat oxidation resistance and photooxidation resisance of the transformer oil are improved, the preparation process is simple and convenient, the production cost can be greatly reduced, and the product quality and working efficiency are improved.

The invention discloses a composition for preventing ionic migration and a preparation method, a non-gel substrate and a preparation method. The composition for preventing ionic migration comprises a capturing cation-exchanger, a coupling agent, an adhesive and a curing agent; the capturing cation-exchanger comprises a matter containing a triazole ring in a molecular structure. The preparation method comprises the following steps: adding the components into an organic solvent and uniformly stirring and mixing to obtain the composition; coating the substrate with the composition and roasting to form a film; and then forming a polyimide insulating layer on the film to form the non-gel substrate. The composition disclosed by the invention as a molecular interlayer material can effectively prevent ions from being diffused to the polyimide insulating layer and moreover, the composition can improve the two phase interface performances so as to improve the insulating performance of a polyimide film and the peeling strength of a metal layer, thereby satisfying the requirement of a high density flexible circuit board on the performance of the non-gel substrate.

The invention relates to the technical fields of synthetic resin and plastic, and particularly relates to a preparation method of a polyphenyl thioether-organic montmorillonite composite material. The preparation method of the polyphenyl thioether-organic montmorillonite composite material comprises the following steps of (1), the preparation of organic montmorillonite; (2), the preparation of the polyphenyl thioether-organic montmorillonite composite material; (3), the heat treatment of the polyphenyl thioether-organic montmorillonite composite material. According to the polyphenyl thioether-organic montmorillonite composite material made by the preparation method, the chrominance change of polyphenyl thioether which is subjected to the heat treatment is ameliorated; the thermal oxidation resistance effect of the polyphenyl thioether is improved; the oxidation resistance effect of the composite material is better.

The invention discloses an epoxy resin foamed material and belongs to the technical field of epoxy resin. An integral block epoxy resin foamed material is prepared by means of a one-step method by taking a copolymer of organosiloxane and acrylate as a toughening phase by means of a high internal phase ratio emulsion template method. The flexibility and the high and low-temperature resistance of the system are improved greatly, and the application prospect is wide.

The invention provides an additive combination for improving the oxidation stability of transformer oil. The additive combination is prepared from, by weight, 100-150 parts of jojoba oil, 10-15 parts of 2-methyl-benzotriazole, 20-30 parts of thiodipropionic acid diester, 5-10 parts of 9,10-acridanyl, 1-3 parts of parlkaline calcium sulfonate and 5-10 parts of dialkyl anilino cyclohexane. The synthesized additive combination for the transformer oil has the good heat oxidation resistance and photooxidation resistance, is suitable for various types of transformer oil such as paraffin-based transformer oil, naphthenic base transformer oil and mixed transformer oil, can be in compound use with other various transfer oil additives, and can achieve ideal oxidation resisting effects with very small dosage.

The invention discloses an expansion type fire-retardant coating. The fire-retardant coating includes, by mass, 3-10% of polysiloxane emulsion, 10-17% of base resin emulsion, 11-18% of a carbonizing agent, 20-30% of a flame-retardant foaming agent, 10-20% of a nitrogen-containing foaming agent, 0.3-0.6% of a pre foaming agent, equal to or less than 5% of an expansion agent, 0.2-0.4% of a defoamingagent, 0.5-1.5% of a wetting dispersant, 0.1-0.5% of a coalescing agent and 10-25% of a filler. The fire-retardant coating that can prolong the fire resistance time and improve the fireproof performance can be provided.

The invention relates to the technical field of LED brackets, in particular to a novel LED bracket and a preparation process thereof. The novel LED bracket is prepared from 15 to 85 percent of polysulfone resin, 0 to 50 percent of a reinforcing modifier and 5 to 10 percent of a raw material component of titanium oxide. The novel LED bracket has the advantages of light failure resistance, high toughness, temperature resistance and high airtightness. The process for preparing the LED bracket comprises steps of melting and granulation of all the components and injection molding. The process is high in injection molding rate and has the advantages of easiness in operation and low cost.

The invention provides a polyether type enameled wire lubricant which is prepared from the following constituents in percentage by weight: 19-40% of oil-soluble polyether, 1.5-20% of industrial white oil, 0-3.0% of beeswax, 0.4-1.0% of an antioxidant, and 38-76% of solvent gasoline. The preparation method comprises the following steps: (1) batching according to the raw material components of the previous formula; (2) at a temperature of 25-40 DEG C, adding the solvent components into a stainless steel sealed container with a mechanical stirring device or a glass flask, and then adding the antioxidant for dissolving; after a few minutes of stirring, adding the remaining constituents and stirring for 20-30 minutes. According to the invention, the prepared lubricant can be used for coating the surface of the enameled wire, has a good lubricating effect, and is good in thermal oxidation resistance and high in safety; the lubricant enables the surface of the enameled wire to be smoother, and ensures the insulation performance of the enameled wire; all of the raw material components are commercially available, the preparation method is simple, and the cost is low.

The invention relates to the technical field of transmission triangular belts, in particular to a preparation method of graphene-based thermal-oxidation-resistant V-belt coated composite rubber. The preparation method comprises the steps that graphene is dispersed in slurry formed by chloroprene rubber and gradually forms microchip zinc hydroxide in zinc salt, so that the graphene slurry adheres to the surface of the microchip zinc hydroxide in situ; the temperature is increased, inorganic fiber is added, and the microchip zinc hydroxide is gradually decomposed and converted into microporous zinc oxide, so that the graphene closely stays and is compounded in micropores of the microporous zinc oxide and is wrapped with an inorganic fiber macroscopic interface; the obtained compound micro powder of zinc oxide and graphene adheres to the inorganic fiber and can be effectively dispersed in the rubber to serve as V-belt coating glue through carrying of the inorganic fiber. The thermal oxidation resistance is greatly improved, and the strength of a V-belt is improved, so that the V-belt is suitable for being used in high-load and high-temperature environments.

The invention discloses an anti-aging agent of a static cable and a preparation method thereof. The anti-aging agent comprises the following components in parts by weight: 40 to 50 parts of an anti-aging agent ODA, 10 to 15 parts of an anti-aging agent DFC-34, 15 to 20 parts of an anti-aging agent MB and 0.1 to 0.3 part of a rubber promoter, wherein the weight part ratio of the anti-aging agent ODA to the anti-aging agent DFC-34 to the anti-aging agent MB is (4-5): (1-1.5): (1.5-2). The anti-aging agent of the cable is prepared by mixing the different anti-aging agents, through the synergistic effect of the anti-aging agents, the thermal-oxidation resistance, the fracturing resistance, the atmospheric aging resistance and the ultraviolet resistance of the anti-aging agent of the cable are good, the blooming phenomenon is unlikely to happen when the anti-aging agent of the cable is fused into rubber, and the practicability is good.

The invention discloses a preparation method of an epoxy resin-based heat-conducting, heat-resisting and electric-conducting adhesive film, and relates to the field of epoxy resin-based heat-conducting, heat-resisting and electric-conducting adhesive films. Epoxy resin and an electric-conducting accelerant are uniformly mixed and fully ground, silver powder is added, then a diluent, a coupling agent and an anti-aging agent are added and uniformly mixed, a curing agent is added and uniformly mixed, and the epoxy resin-based heat-conducting, heat-resisting and electric-conducting adhesive film is obtained. The epoxy resin-based heat-conducting, heat-resisting and electric-conducting adhesive film solves the problems that the design requirement cannot be met when an electric-conducting silver adhesive material is used for packaging, and cracking deformation is caused by thermo-oxidative aging of an epoxy resin-based material; through the synergistic effect of the epoxy resin, the electric conduction accelerant, the silver powder and the anti-aging agent, the epoxy resin-based heat-conducting, heat-resisting and electric-conducting adhesive film has good manufacturability during application, packaging of thinner and smaller chips is achieved, meanwhile, piperazine and piperidine are integrated in the same molecule through a chemical synthesis method, and therefore the heat-conducting, heat-resisting and electric-conducting adhesive film is obtained. And the anti-aging agent has a more efficient anti-aging effect.