51results about How to "Retain high temperature resistance" patented technology

The present invention discloses one kind of polyphenyl thioether/polyamide composite material and its preparation process. The polyphenyl thioether/polyamide composite material is prepared with polyphenyl thioether 23-69.3 wt%, polyamide 10-30 wt%, glass fiber 20-40 wt%, heat stabilizer 0.2-2 wt%, silane coupler 0.1-2 wt%, processing lubricant 0.2-2 wt% and crystallization promoter 0.1-1 wt%. The polyphenyl thioether/polyamide composite material has high shock toughness, simple preparation process and low cost.

The invention provides an oil-resistant and high-temperature-resistant mining cable sheath material and a method for preparing the same. The oil-resistant and high-temperature-resistant mining cable sheath material comprises, by weight, 30-40 parts of chloroprene rubber, 25-35 parts of fluorine-silicon rubber, 20-30 parts of chlorosulfonated polyethylene rubber, 10-15 parts of fluoroether rubber, 6-8 parts of carbon nanometer fibers, 35-45 parts of carbon black, 10-15 parts of plasticizers TOTM, 8-12 parts of compound stabilizers, 2-4 parts of anti-aging agents 4010NA, 0.5-1.5 parts of anti-aging agents ODA, 0.8-1.2 parts of dicumyl peroxide, 6-10 parts of talc powder, 10-15 parts of compound flame retardants, 1-3 parts of accelerators TMTD, 10-20 parts of diatomaceous earth and 20-25 parts of modified kaolin. The oil-resistant and high-temperature-resistant mining cable sheath material and the method have the advantages that the chloroprene rubber, the chlorosulfonated polyethylene rubber, the fluorine-silicon rubber and the fluoroether rubber are compounded with one another, accordingly, the processing property and the mechanical property of the oil-resistant and high-temperature-resistant mining cable sheath material can be improved while the original properties of raw materials for the oil-resistant and high-temperature-resistant mining cable sheath material in a formula are guaranteed, the oil-resistant and high-temperature-resistant mining cable sheath material is excellent in physical and mechanical property, good in oil resistance, high-temperature resistance, abrasion resistance and insulating and flame-retardant property and long in service time, and the aging speeds can be obviously lowered.

The invention discloses a high-temperature self-lubricating nano composite ceramic material with toughness and a preparation method thereof. The material consists of a matrix phase, a reinforcing phase and a lubricating phase; the structure of the material mainly consists of hybrid crystal boundary type, intra-crystal type and nano-nano type; the matrix phase is ZrO2-Y2O3 and accounts for 65 to 80 mass percent, and the grain diameter of the matrix phase is 50 to 100 nanometers; the reinforcing phase is Al2O3 and accounts for 5 to 10 mass percent, and the grain diameter of the reinforcing phase is 100 to 150 nanometers; and the lubricating phase is metal Mo and accounts for 10 to 30 mass percent, and the grain diameter of the lubricating phase is 200 to 300 nanometers. The hybrid structure of the material has very high fracture toughness; and due to a lubricating oxide film generated at high-temperature friction, the material has low friction coefficient and can be used as a structural material.

The present invention discloses a spray-coating type elastomer anticorrosive protective material formed from two components of A an B whose volume ratio is 1:1, in which the component A is the isocyanate prepolymer whose isocyanate (NCO) content is 12-23%, said isocyanate prepolymer is synthesized by using polyisocyanate and polyether polyol; and the component B is formed from 40-90% of high activity polyether and 10-60% of polyamine/alcohol chain extender. In the formula of component B the low-cost high-activity alcohol ether and trihydroxymethyl propane are substituted for high-cost amine chain extenders of end amino polyether and DETDA, etc. It can be used for paving seamless ground surface and wall surface of GMP pharmaceutical workshop and chemical workshop and internal and external layer anticorrosion protection of oil pipeline, marine platform and others.

The invention discloses an epoxy functionalized organosilicon conductive adhesive for an LED. The organosilicon conductive adhesive comprises 10 to 20 weight parts of organosilicon epoxy resin, 7 to 20 weight parts of organosilicon curing agent, 0.1 to 0.5 weight part of curing accelerator, 70 to 90 weight parts of silver powder conductive filler and 0.1 to 0.5 weight part of silane coupling agent serving as an interface reinforcing agent. The conductive adhesive can be stored at a low temperature for more than 6 months, and the viscosity is increased by 25 percent at room temperature for more than 48 hours. After the adhesive is cured, the thermal decomposition temperature (2 percent mass loss) is 300 DEG C, the small piece thrust at room temperature is 5Kgf/die(2*2mm), and the volume resistivity is less than or equal to 3.0*10<-4>W.cm; and the adhesive has high conductivity, heat resistance and ultraviolet (UV) resistance.

The invention discloses a manufacturing method of a ketone-anhydride type polyimide composite retainer tube blank. The retainer tube blank material is prepared from the following three components in percentage by weight: 75-85% of ketone-anhydride type polyimide molding powder, 8-15% of carbon fiber and 5-12% of polytetrafluoroethylene. The preparation method comprises the process steps of drying, proportioning, annealing and the like. The ketone-anhydride type polyimide composite retainer tube blank prepared by the method has the characteristics of light weight, high tensile strength, high-temperature resistance and excellent tribological properties; the ketone-anhydride type polyimide composite retainer tube blank contains ketone-anhydride type polyimide, carbon fiber and polytetrafluoroethylene, and the retainer material keeps the advantages of high-temperature resistance, high tensile strength and high high-temperature strength conservation rate of the ketone-anhydride type polyimide, and also improves the tribological properties of the polyimide at the same time.

The invention discloses a method for preparing naphthyl autocatalytic poly-cyanophenyl resin. The method comprises the following steps of (1) adding aminonaphthol, an alkaline catalyst and an organicsolvent in a reactor, performing stirring for 1-2h at the temperature of 60-70 DEG C under the protection of inert atmosphere, then adding 4-nitrophthalonitrile, and performing continuous reaction for6-7h to obtain an autocatalytic cyanophenyl monomer; and (2) putting the autocatalytic cyanophenyl monomer in the reactor, performing melting reaction to obtain a prepolymer, then grinding the prepolymer into powder, transferring the powder into a muffle furnace, rising the temperature from 200-230 DEG C to 280-310 DEG C step by step within 7-9h, and finally obtaining the poly-cyanophenyl resin.By adopting the method provided by the invention, the reaction activity is improved while the melting point of the monomer is lowered, so that the post solidification temperature of the naphthyl autocatalytic poly-cyanophenyl resin is lowered by about 100 DEG C compared with the traditional autocatalytic monomer, the solidification time is reduced by about 8h, and the naphthyl autocatalytic poly-cyanophenyl resin still keeps the characteristics of high temperature resistance and high carbon residue rate.

The invention discloses a metal rope belt for a cable sling. The metal rope belt is formed by multiple metal fiber filament bundles of 2-3o micrometers in filament diameter through plying and twisting or weaving or formed by metal fiber filament bundles and nonmetal fiber filament bundles of 2-30 micrometers in filament diameter through plying and twisting or weaving, and weight percentage of the metal fiber filament bundles is 10-100%. The invention further discloses a manufacturing process of the metal rope belt for the cable sling. Flexibility of a rope can be improved, and bending performance and folding resistance are improved.

The invention provides a thermally-conductive far-infrared synergistic non-stick coating. The thermally-conductive far-infrared synergistic non-stick coating is a special coating using aqueous dispersion resin formed by mutual modification of a nanometer oxide gel and an organic fluororesin emulsion as a film forming matrix, and plasticized high-performance resin micropowder for modification, functional thermal-conductive exothermic synergistic filler, a tinting pigment and a coating additive as auxiliary components. After the coating of the invention is modified by graphene, the coating retains the original high temperature resistance, weather resistance and strong-corrosion resistance, and is endowed with the new functional characteristics of thermal stability, thermal balance, high hardness, high toughness, wear resistance, scratch resistance, wettability, no adhesion and the like; and nanometer negative ion powder releases far-infrared electromagnetic waves under the excitation ofheat (so thermal conductivity is good), and generates small-molecular-group water which permeates the cell membranes of cooked rice grains, so starch structures inside the cooked rice grains absorb water and become bulky and flexible, which improves the palatability of cooked rice.

The invention provides a method for preparing a metal composite plate by using as-cast blanks. The metal composite plate comprises a multi-layer metal, base-layer carbon steel or alloy steel, a bonding agent and a mixed activated adsorbing agent, wherein the bonding surfaces of the multi-layer metal and the base-layer metal are subjected to rust removal, passivation and chemical cleaning, the bonding agent is added to the bonding surfaces of the base plate and the compound plate, the mixed adsorbing agent is added to the peripheries of the bonding surfaces, before rolling, heating is conductedtwo times under atmosphere protection, so that air, water vapor and the like on the bonding surfaces are removed or adsorbed by the mixed activated adsorbing agent, the bonding agent is melted to make the bonding surfaces sealed, and oxidation is avoided. The method for preparing the metal composite plate by using the as-cast blanks can effectively solve the problems that a conventional preparation method for the compound plate is long in assembling period, high in cost and the like, a vacuum extraction equipment is omitted, and the production cost is reduced.

The invention discloses a preparation method of a flexible transparent conductive electrode with low surface roughness. The preparation method comprises the steps of depositing a metal network electrode on a substrate by adopting a cracking template method, forming a metal coating on the deposited metal network electrode through electroplating, performing plasma treatment, and infiltrating by using a c-PI precursor solution; and after c-PI is subjected to heating and heat preservation to form a film, stripping the c-PI film from the substrate in a hot bath to complete lossless transfer, so as to obtain the flexible transparent conductive electrode with low surface roughness. The flexible transparent conductive electrode prepared through the method has the performance of high transmittance, the surface roughness is within 10 nm, and the requirements of thin film photoelectric devices such as perovskite solar cells are completely met.

The invention discloses a preparation method of a PPTA-MPIA in-situ composite fibrid. The preparation method comprises the following steps: 1, dissolving PPTA and MPIA raw materials or raw stock in aco-solvent to obtain a PPTA-MPIA mixed solution; 2, feeding the PPTA-MPIA mixed solution into a precipitation machine containing a circulating coagulation bath for shearing, and executing washing withdistilled water for several times after shearing is finished to obtain the PPTA-MPIA in-situ composite fibrid; the cosolvent in the step 1 contains a solvent, a cosolvent and an end-capping reagent;the solvent is prepared from one or more of N-methyl pyrrolidone, concentrated sulfuric acid, N,N-dimethylacetamide; the cosolvent is an alkali metal chloride; the end-capping reagent is an alcohol end-capping reagent. The composite fibrid prepared by the preparation method not only can retain the excellent performances of high temperature resistance and weak moisture absorption of a para-aramid precipitation fiber, but also has the liquid phase dispersion performance and the composite reinforcing effect of a meta-aramid precipitation fiber, and has good mechanical performance and thermal stability.

The invention provides a preparation method of self-cleaning fibers, and belongs to the field of water purification materials. The preparation method of the self-cleaning fibers comprises the following process steps: mixing deionized water, sodium metavanadate and ethylenediamine tetraacetic acid disodium, regulating pH of a solution with hydrochloric acid, and then adding a mixed solution of deionized water, bismuth nitrate pentahydrate, neodymium nitrate and sodium bicarbonate to prepare an active precursor solution; carrying out hydrothermal reaction on the active precursor solution and aluminium silicate fibers, and drying and calcining to obtain the self-cleaning fibers. The self-cleaning fibers consist of aluminium silicate fibers of which the surfaces are coated with bismuth neodymium vanadate, resist high temperature, are flexible, are high in strength, can float in water, and can degrade organic pollutants in water under the condition of illumination.

The invention discloses a nanometer hybridized ceramic resin coating as well as a preparation method and an application of the nanometer hybridized ceramic resin coating and belongs to the technical field of chemical industry of coatings. By adopting the coating disclosed by the invention, not only are the original high temperature resistance, corrosion resistance, weather resistance and ageing resistance retained, but also the brittleness problem of the coating is solved, and the nanometer hybridized ceramic resin coating has the characteristics such as high hardness, high toughness, wear resistance, scratch resistance, no infiltration, inadhesion and no scale formation. Different coating varieties can be prepared by selecting film forming matrix materials with different structures according to different working environments and construction conditions, and proved by a contrast test, an endurance test and overall performance detection, the nanometer hybridized ceramic resin coating disclosed by the invention far exceeds like products on the current market.

The invention relates to an oil-resistant and high-temperature-resistant ship cable, which sequentially comprises a conductor, a belting layer, an insulating layer, a fiber braided reinforcing layer,a sheath, a glass fiber braided layer and a coating layer from inside to outside, wherein the insulating layer and the sheath are respectively made of a silicon rubber, the insulating layer comprisesa fluorosilicon rubber, No.2 fumed silica, nano tin oxide, praseodymium oxide, methylphenyldiethoxysilane, hydroxyl fluorosilicone oil, mica powder, talcum powder, benzoyl peroxide, nano magnesium hydroxide, stearic acid and carbon black, and the sheath comprises a fluorosilicon rubber, a chlorosulfonated polyethylene rubber, a natural rubber, an epoxidized natural rubber, a filling reinforcing agent, dioctyl phthalate, triallyl trimellitate, hydroxyl silicone oil, hydrogen-containing silicone oil, a silane coupling agent, magnesium oxide and calcium hydroxide. The oil-resistant and high-temperature-resistant ship cable has advantages of excellent physical and mechanical properties, good oil resistance, good high-temperature resistance, good wear resistance, good insulation property and good flame retardance, can obviously reduce the aging speed, and can be applied to cables for ships.

The invention relates to an asbestos-free seal fiberboard and a manufacturing method thereof. The asbestos-free seal fiberboard is composed of 3800-4200 parts of rubber, 480-520 parts of zinc oxide, 1800-2200 parts of white carbon black, 180-220 parts of dibutyl ester, 40-60 parts of stearic acid, 50-70 parts of paraffin, 70-90 parts of sulfur, 980-1200 parts of defoaming agent, 1480-1520 parts of glass fiber, 1140-1160 parts of graphite powder, 100-120 parts of anti-aging agent and 320-360 parts of accelerator. The method comprises the following steps: mixing the zinc oxide, white carbon black, dibutyl ester, stearic acid, paraffin, sulfur, defoaming agent, glass fiber, graphite powder, anti-aging agent, accelerator, toner, waste powder, lime and carbon powder into the rubber according to the formula, pulping, adding the waste fiber to form the master batch, rolling into flakes, vulcanizing the flaky material, and molding the vulcanized rubber to obtain the finished product. The manufacturing method fully utilizes the wastes, and the finished product can maintain the characteristics of high temperature resistance and self lubrication.

The invention belongs to the field of furniture, and discloses a preparation method of a furniture board. The method comprises the following steps: adding nanometer silicon dioxide into ethylene glycol for dissolving; adding purified terephthalic acid, and carrying out an esterification reaction to obtain an esterified product; mixing diethylene glycol with dibasic acid, adding a titanium catalyst, and carrying out a polymerization reaction to obtain a prepolymer; adjusting temperature and pressure, and carrying out a hybrid reaction on the esterified product and the prepolymer to obtain a PETraw material with a melting point of 110-120 DEG C; carrying out melt extrusion on the PET raw material, and carrying out needling, hot bonding or spinning melting treatment to obtain a PET non-wovenfabric; pretreating the PET non-woven fabric with the melting point ranging from 110 DEG C to 120 DEG C and a PET non-woven fabric with a melting point ranging from 225 DEG C to 260 DEG C to obtain aPET non-woven fabric pre-material; and cutting, hot-pressing and cooling the pre-material to obtain the furniture board. The preparation method is simple and stable in process and suitable for large-scale industrial production.