30results about How to "Improve high temperature insulation performance" patented technology

The invention relates to a fiber-preform-reinforced aerogel insulating composite material. The fiber-preform-reinforced aerogel insulating composite material adopts ceramic fiber preform containing anopacifying agent as a reinforcement ,and adopts aerogel with nanopores as a matrix; a mass ratio of ceramic fiber in the ceramic fiber preform to the opacifying agent is 1:(0.1 to 0.5), and the opacifying agent is one or combination of TiO2, ZrO2, ZrSiO4, Cr2O3, Fe2O3 or SiC; the pore volume of the aerogel is larger than 2.5g/cm<3>. The fiber-preform-reinforced aerogel insulating composite material and the preparation method thereof have the beneficial effects that the high-temperature insulating property of the fiber-reinforced aerogel insulating material is obviously improved, and the highest use temperature of the material can reach 1200 DEG C, so that the heat stability is good; in addition, the fiber-preform-reinforced aerogel insulating composite material is good in mechanical property, and can be cut and machined into various member shapes to meet different use requirements.

The invention relates to environment-friendly high temperature-resistant inorganic insulated paint and a preparation method thereof and belongs to the field of preparation of coatings. The environment-friendly high temperature-resistant inorganic insulated paint consists of a component A and a component B, wherein the component A consists of the flowing raw materials in percentage by mass: 41 to 44 percent of silica sol, 18.5 to 19.8 percent of inorganic pigment, 5.3 to 6.3 percent of kaolin, 4.4 to 5.0 percent of mica powder, 2.2 to 3.0 percent of talcpowder, 22 to 24 percent of deionized water, and 2.1 to 2.2 percent of aid; and the component B consists of the following raw materials in percentage by mass: 1.0 to 1.2 percent of acetic anhydride and 98.8 to 99.0 percent of methyltrimethoxysilane. During use, the component A and the component B are stirred and mixed in a ratio and cured; and then a mixture is subjected to air spraying onto metal base materials such as aluminum alloy, stainless steel and the like which are treated. The paint has the advantages of environment-friendliness, high temperature resistance and insulativity, acid and alkali resistance, long normal temperature quality guarantee period, long construction time and the like, and can be cured at normal temperature.

The invention relates to a thermal insulation material, and specially relates to a thermal insulation material of torpedo cars for iron and steel smelting. The invention provides a high temperature thermal insulation material for tank number of torpedo cars. The high temperature thermal insulation material comprises a nano thermal insulation layer and a strengthened layer, wherein the thermal insulation material mainly comprises the following raw materials: nano silica aerogels; fibrous alkali-free superfine glass or high silica glass fiber; quartz fiber; polycrystalline mullite fiber; ceramics; aluminium oxide aerogels; hydrophobic agent; one or more of potassium hexatitanate whiskers, silicon carbide, zirconium silicate and aluminum silicate; alumina; citric acid or sodium tripolyphosphate and gypsum; and the strengthened layer is formed by reinforced resin and fiber cloth. The nano high temperature thermal insulation material prepared according to the invention has excellent thermal insulation performance, higher strength and higher integrality, is polyporous, and can keep passing ability of electronic signals to the greatest extent without shielding.

The invention discloses a preparation method of foam reinforced SiO2-TiO2 composite aerogel. The preparation method comprises the steps: mixing tetraethyl orthosilicate and tetrabutyl titanate according to a certain proportion; sequentially adding absolute ethyl alcohol and deionized water, stirring, adding a catalyst after a period of time, dipping foam into the prepared SiO2-TiO2 colloidal solution, gelling and aging, and finally performing supercritical drying. The catalyst is only used once when the SiO2-TiO2 composite sol is prepared, so that the foam reinforced SiO2-TiO2 composite aerogel is prepared by a 'one-step catalytic method'. Moreover, TiO2 in the composite aerogel prepared by the method disclosed by the invention has excellent shading performance, and has a heat radiation prevention effect while insulating heat, so that the high-temperature heat conductivity of the aerogel can be effectively reduced. Meanwhile, the foam is used as a reinforcing body, so that the defect that the SiO2-TiO2 aerogel is fragile can be effectively overcome. Tests show that the normal-temperature thermal conductivity of the prepared foam reinforced SiO2-TiO2 composite aerogel is less than or equal to 0.015 W/(m*K).

The invention discloses high insulation resistance refractory ceramic rubber for a heating cable and a preparing method thereof. The ceramic rubber is mainly prepared from, by weight, 40-45 parts of silicone rubber, 20-25 pars of ceramic powder, 15-20 parts of glass powder, 5-10 parts of quartz powder, 8-10 parts of mica powder, 5-10 parts of vapor phase method white carbon black, 0.5-1 part of coupling agent, 2-5 parts of softening agent and 0.8-1 part of 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane. The preparing method comprises the steps of placing the raw materials in a rubber mixing mill for mixing, wherein mixing temperature is controlled to be 50-60 DEG C, and mixing time is 15-20 min; then conducting filtration with a rubber filter to obtain the required ceramic rubber, wherein the rubber filter is provided with three layers of filter nets, which are the 20-mesh filter net, the 40-mesh filter net and the 60-mesh filter net from inside to outside in sequence. The ceramic rubber has the advantages of being high in insulation resistance refractory property, good in dampproof insulation effect and long in service life. The operating temperature of the heating cable with the ceramic rubber as an insulating layer can reach 600 DEG C, dampproof insulation effect is good, safety performance is high, and breakdown of the cable can not be caused even if an outer sheath is abraded or soaked.

The invention relates to the field of glass cup manufacturing, in particular to a production process for heat-insulating and shatter-resistant glass cups. The raw materials required for this solution include: 10-15g of bentonite, 5-10g of polyacrylamide, 400-500g of sodium silicate powder, 5 ‑11g nano-graphite oxide, 40‑50gCaO, 30‑40gSiO2, 20‑30gSiC powder, rutile titanium dioxide powder equal to 10% of the sum of SiO2 and CaO mass, through heating and melting, extrusion molding, annealing, tempering, to obtain a Heat-insulating and shatter-resistant glass; the technical solution provided by the invention can effectively overcome the defects of the glass made in the prior art that the raw materials are poisonous and the heat insulation effect is poor, and it is worth popularizing.

The invention provides a manufacturing method of a fireproof cable for multifunctional rail transit, wherein the manufacturing method belongs to the technical field of wires and cables. The manufacturing method comprises a cable core manufacturing step, a cable core cabling step, and a step of combining a cable core with a housing. The cable core is obtained through cabling one functional cable or multiple functional cables. Each functional cable and/or housing at least comprises an alkali-free ceramic fiber yarn woven layer and a high-temperature-resistant nanometer coating which is arranged on the external surface of the alkali-free ceramic fiber yarn woven layer. The alkali-free ceramic fiber yarn woven layer and the high-temperature-resistant nanometer coating on the external surface form a flame-retardant protective tube. Electric conduction of the cable can be kept through function of the flame-retardant protective tube (with high temperature resistance, nonflammability and heat insulation). Signal connection can be kept by longer than three hours, thereby supplying reliable safe power, signal and the like for rescue. On the condition of the flame, the outer protective layer, the oxygen insulating layer and the insulating layer of the cable can be automatically solidified for protecting, thereby realizing fire resistance, water resistance, vibration resistance, no toxicity, environment-friendly performance, and high temperature resistance which reaches resistance to the higher temperature above 1000 DEG C. The manufacturing method can be simultaneously used in multiple fields.

The invention discloses a high temperature thermal insulation building material, which is made from raw materials with parts by weight: acrylate 8-16 parts, talcum powder 2-4 parts, polyamide 12-23 parts, cementing materials 16-26 parts, areca sawdust 4-7 parts, mineral thermal insulation materials 15-26 parts, expanded pearl powder 6-8 parts, magnesium chloride water 14-22 parts, pthalic acid esters plasticizer 20-35 parts, nano-zinc oxide 2.5-3.6 parts, nano ferrum dioxide 3-6 parts, foam plastics 4-8 parts, calcium oxide 9-15 parts, perlite 12-28 parts and mica powder 3-5 parts. The high temperature thermal insulation building material has the beneficial effects that the high temperature thermal insulation building material enhances high temperature thermal insulation performance, is convenient to construct and has environmental protection effect.