81results about How to "No melting" patented technology

The invention relates to a decellularization cornea preparation method, which adopts steps of corneal epithelium layer removing, ultraviolet cross-linking, viral inactivation, decellularization treatment, gradient dehydration, radiation protection and sterilization. According to the present invention, the prepared decellularization cornea has characteristics of complete antigen removing, no excitation of host acquired immunity reaction, good biocompatibility, low damage on nature corneal stroma, maintaining of structure characteristics of the nature corneal, and maintaining of effective components of the nature corneal so as to provide physical and chemical properties similar to the nature corneal; and after the prepared decellularization cornea is transplanted, animal experiment results show that characteristics of transparent transplanted cornea, no scar formation, no melting generation and no neovascularization are provided, the transplanted cornea and the recipient bed are completely integrated after transplanting a month, the transplanted cornea is subjected to complete epithelization after three months, corneal stroma cells migrate toward the decellularization cornea graft so as to prove that the tissue just takes place slow reconstruction, and the transplanted cornea after 6 months does not show significant difference in histology and appearance detection compared with the nature cornea.

A power semiconductor device in which a semiconductor element is die-mount-connected onto a lead frame in a Pb-free manner. In a die-mount-connection with a large difference of thermal expansion coefficient between a semiconductor element 1 and a lead frame 2, the connection is made with an intermetallic compound 200 having a melting point of 260° C. or higher or a Pb-free solder having a melting point of 260° C. or higher to 400° C. or lower, at the same time, the thermal stress produced in temperature cycles is buffered by a metal layer 100 having a melting point of 260° C. or higher. A Pb-free die-mount-connection which does not melt at the time of reflowing but have no chip crack to occur according to thermal stress can be achieved.

The invention relates to a balling method using medium- and low-grade phosphate rocks or ground phosphate rocks. The method comprises the following steps: S1, preparing materials, namely A, 85-100 parts of 60-120-mesh medium-grade and low-grade phosphate rocks or ground phosphate rocks, B, 1-10 parts of water or aqueous liquor of phosphoric acid, C, 2-8 parts of coke powder with the granularity of 60-120 meshes and D, 1-8 parts of one or more of phosphate fire clay, kaolin, sodium silicate, sodium carbonate, calcium carbonate and serpentine; S2, stirring, namely after uniformly mixing the raw materials, pressing the mixture into balls by use of a dry powder ball press machine, after pre-drying, delivering the mixture to a vertical calcining kiln, using purified yellow phosphorus tail gas, heating to 850-950 DEG C; starting roasting to obtain a finished product. The method is free from binders and low in cost, and the medium-grade and low-grade phosphate rocks are not hardened. The value of the medium-grade and low-grade phosphate rocks can be improved, and the ground phosphate rock of a mine can be fully utilized. The phosphate rock balls prepared are suitable for production of yellow phosphorus or calcium magnesium phosphate fertilizers.

The invention discloses a steel/aluminum dissimilar metal element laser deposition additive manufacturing method, and aims to achieve integral additive manufacturing of a steel/aluminum dissimilar metal element from steel/aluminum dissimilar metal by using an additive manufacturing aluminum alloy process progressively in a one-step continuous formation manner or on a steel molded base body. According to the steel/aluminum dissimilar metal element laser deposition additive manufacturing method, the molded element has different components and properties at different parts by changing components, speeds and manufacturing process parameter conditions of conveying materials, furthermore integral design and manufacturing of material-structure-function can be achieved, and the steel/aluminum dissimilar metal element laser deposition additive manufacturing method has unique advantages of high efficiency, low cost, high performance quality and the like in the aspect of manufacturing dissimilar metal elements.

The invention discloses a supporting roller with a roughness keeping capability, comprising the following chemical components in mass percentage: 0.40-0.70% of C, 0.40-0.80% of Si, 0.50-0.80% of Mn, 4.5-5.5% of Cr, 0.40-1.00% of Mo, 0.30-0.50% of V, 0.40-0.60% of Ni. The supporting roller further comprises one or two of 0.05-0.30% of Nb and 0.05-0.30% of Ti, and residual amounts of Fe and unavoidable impurities. The invention further discloses a manufacturing method of the supporting roller; and the roughness keeping capability of the manufactured supporting roller is greatly improved.

The invention relates to a method for preparing a light, thin, heat-insulating and flame-retardant plush fabric. The method comprises the steps of weaving a fabric, wherein terry yarn is 98% of 32S/1 aramid fiber 1313 / 2% of conductive filament, and connecting yarn is 100D/36F polyester flame-retardant double-sided plush; causing the fabric to undergo dyeing, drying, soft forming, galling, intermediate shaping, combing, shearing and final shaping, and obtaining the light, thin, heat-insulating and flame-retardant plush fabric. The method is short in process and good in stability, the obtained plush fabric insulates heat, is light and thin, has an outstanding flame-retardant effect, does not melt, has no melting drip and does not generate smoke, the afterflame time is 0 s, the smoldering time is 0 s, the plush fabric is permanently resistant to flame and is comfortable to wear and soft in touch, the final finished knitted fabric gram weight is 271 g/m2, the heat-insulating value CLO is 0.5-1.0, and the plush fabric has good application prospects.

The invention discloses a double-layer compound biological filter material for an aerated biological filter. The double-layer compound biological filter material is formed by combining an inner layer and an outer layer, wherein the inner layer consists of attapulgite clay and fly ash in a weight ratio of 4:6; and the outer layer consists of attapulgite clay, kieselguhr and coal dust in a weight ratio of 7-10:9-12:1. The preparation method comprises the following steps of: uniformly mixing the attapulgite clay and the fly ash, and forming inner cores of solid spheres in a granulator; uniformly mixing the attapulgite clay, the kieselguhr and the coal dust to obtain mixed powder, continuously and slowly adding the mixed powder into the granulator to coat the surfaces of the inner cores of the solid spheres for granulation to obtain the finished product spheres; and drying the finished spheres naturally for 24 hours and in a constant-temperature fan drying box at the temperature of 120 DEG C for 2 hours, taking the finished spheres out of the drying box, directly putting the finished spheres in a box-typed resistance furnace to sinter the finished spheres at the temperature of between 950 and 1.050 DEG C for 20 minutes, and naturally cooling the finished spheres to obtain the double-layer compound biological filter material. The double-layer compound biological filter material obtained by the preparation method has the advantages of rough surface, high void ratio, good wearing resistance, high strength, easy film formation and high economy and practicability.

The invention relates to a material and technology for storing hydrogen, in particular to a novel metal ammonia borane compound hydrogen storage material and a preparation method thereof. The novel metal ammonia borane compound hydrogen storage material is prepared by taking the mixture of ammonia borane NH3BH3 and metal M or metal hydride NHy as an initial raw material and performing ball milling on the raw material in an inert protective atmosphere or a reactive hydrogen atmosphere. The molecular formula of the novel metal ammonia borane compound hydrogen storage material is MxNH(3-nx)BH3, wherein x is more than 0 and less than or equal to 1, and n is more than or equal to 1 and less than or equal to 3. The mole ratio of NH3BH3 to M or NHy in the phase composition of the raw material is 1-50:1. The preparation method provided by the invention has high efficiency and simple and easy operation. The novel metal ammonia borane compound hydrogen storage material provided by the invention has the advantages of high hydrogen storage capacity, low hydrogen production temperature, fast hydrogen production dynamics, no impurities, no gaseous pollutants and the like and has the application prospective of automobile-mounted hydrogen storage.

The fire-retardant, heat-isolating, waterproof and breathing comfortable fireman suit material includes from outside to inside fireproof layer, waterproof and breathing layer, heat-isolating layer and comfortable layer. Owing to the reinforced fire-retardant and heat-isolating performance, the present invention can reduce the fire distinguishing distance to raise the fire distinguishing effect. The material has overall protecting performance of 30.7 cal/sq cm as well as high fire-retardant performance, high strength, water resisting resistance, etc.

Provided are a fluorescent substance represented by the general formula (A1-xRxM2X)m(M2X4)n, a process for producing the fluorescent substance, and a luminescent device including the fluorescent substance. (In the formula, element A is one or more elements selected from Li, Na, Be, Mg, Ca, Sr, Ba, Sc, Y, La, Gd, and Lu; element R is one or more elements selected from Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb; element M is one or more elements selected from Si, Ge, Sn, Ti, Hf, Zr, Be, B, Al, Ga, In, Tl, and Zn; element X is oxygen and/or nitrogen; n and m each is an integer of 1 or larger; and x is a real number of 0 < x <1.)

The invention relates to a high-transparency high-heat-stability TPU (thermoplastic polyurethane) film and a preparation method thereof. The TPU film is mainly prepared from the following raw materials in parts by weight: 12-18 parts of alicyclic diisocyanate, 7-13 parts of toluene diisocyanate, 35-55 parts of polyester polyol, 6-12 parts of chain extender, 0.2-0.8 part of defoaming agent, 2-4 parts of ultraviolet absorbent, 0.4-1.6 parts of anti-yellowing agent and 0.5-1.5 parts of polytetrafluoroethylene. The preparation method of the TPU film comprises the following steps: predrying the components according to the formula, mixing, and extruding by an extruder. The TPU film has the advantages of high transparency, excellent heat stability and excellent mechanical properties. The light transmittance is greater than 95%, and the yellowing resistance is Grade 5 above.

The invention discloses a high-comfort protective garment fabric and a protective garment. The high-comfort protective garment fabric is composed of an outer layer, a waterproof and breathable layer and a heat-insulating comfortable layer in sequence. According to the high-comfort protective garment fabric and the protective garment, two or more materials with different carbonization hot-shrinkage rates are combined, meanwhile, layering and inlaying are combined, and novel dual-layer woven structures, knitted structures and the like are formed. During a thermal test, a surface hunching form is formed, and therefore the heat transfer rate of heat radiation and heat conduction is hindered and reduced, and a higher heat protection value is obtained at the same gram weight. Therefore, in a product scheme with the same heat protection value, the effect of weight-reducing optimization is achieved, and meanwhile the safety, comfort and attractiveness of a garment in an existing scheme are effectively improved.

The invention relates to the field of logistics, in particular to an automatic control feedback cabin and method based on temperature field three-dimensional imaging. A three-dimensional visualizationtemperature field of the whole vehicle is acquired by temperature sensors arranged in the whole vehicle to construct a three-dimensional image, an identification is conducted by means of an RGB colorsystem recognition, a reddish color is selected and the position in the vehicle compartment is marked; the priority is set as one; the dangerous temperature is set as T, and the temperature difference between the temperature at the latest point in time and the dangerous temperature is determined; the smaller value is selected and the position in the vehicle compartment is marked; the priority isset as two; the temperatures are obtained by the temperature sensors periodically, the temperature trend and temperature change within the same time point are determined, and the highest temperature is selected and the position in the vehicle compartment is marked; the priority is set as three; wind division and guiding are conducted through an air inlet pipe by universal air outlets, the air inlet pipe is connected with a cold air source, and the universal air outlets sequentially aim at and blow winds to the positions determined as prior one, prior two and prior three to perform precise cooling.

The invention discloses an EVA/PC composite adhesive film for encapsulating solar cells with a low shrinkage rate, which is sequentially composed of an upper layer of EVA film, a core layer of PC film and a lower layer of EVA film. Due to the high melting point, high strength and modulus of the core PC film, the composite EVA/PC film not only has better physical and mechanical properties than ordinary EVA film, but also has a shrinkage rate reduced to less than 0.5%, which is much lower than At present, the shrinkage rate of the EVA adhesive film is 3%, and its transparency and aging resistance fully meet the requirements of the solar cell packaging adhesive film. The layered composite EVA/PC adhesive film of the invention can improve the production efficiency of solar cells, improve product quality, reduce defective rate and cost.

The invention relates to the field of hydrogen storage material and hydrogen production, in particular to a multi-level ammonia borane compound hydrogen storage material and preparation and composite hydrogen release method thereof. The mixture of ammonia borane NH3BH3 and multi-metal hydride M1Mm2nHx is used as the starting material, and the multi-level ammonia borane compound hydrogen storage material is prepared by ball milling or auxiliary heat treatment in an inertia protection atmosphere or reactive hydrogen atmosphere, wherein the molecular formula of the multi-level ammonia borane compound hydrogen storage material is M1mM2n(NH2BH3)x, wherein 0<m<=4, 0<n<=4 and 1<=x<=10; the starting material comprises the phases of NH3BH3 and M1mM2nHx at a molar ratio of (1-10):1. The multi-level ammonia borane hydrogen storage material provided by the invention has obvious advantages of relatively high hydrogen storage capacity, low hydrogen release temperature, no impurity gas pollutant and the like. The composite hydrogen release technology provided by the invention effectively integrates the synthesis reaction and decomposition reaction of the multi-level ammonia borane so that the hydrogen storage system can realize high-capacity and fast hydrogen release in a proper temperature, and has application prospect in vehicular hydrogen storage.

The invention provides a light inorganic fireproofing composite material for tunnel, which is compounded by three layers of materials from inside to outside; the first layer is spray inorganic fireproofing material, the components of which comprise inorganic fireproofing fiber, expanded vermiculite powder, expanded graphite powder and ordinary Portland cement; the second layer is surface fireproofing material, the components comprises ordinary Portland cement, mica powder, gypsum and talcum powder; the third layer is fireproofing decorative material, which is a fire-retardant single-side composite aluminum foil. The composite material has the advantages that: the fire endurance is high; the thermal conductivity in hydrocarbon fire scene is extremely low; the fireproofing result is excellent; the self quality loss in fire is less without melting and dropping; the weight is light; the weathering is good; the sound-absorbing is good and the high-frequency drying reduction is obvious; the cost is low; the construction strength is less and the charge is low; furthermore, the ornament is good and the surface is smooth and beautiful surface, thereby the invention can mainly be used in the fire protection for the tunnel wall.

The invention relates to a material for manufacturing a labor protection article, in particular to a sole material for high temperature resistant labor protection shoes used in a high temperature environment. The material comprises the following components in portion by weight: 38.5 to 40.5 portions of butyronitrile, 7.6 to 8.2 portions of sulfur, 2.51 to 3.05 portions of accelerating agent DM, 11.3 to 13.1 portions of accelerating agent TMTD, 4.3 to 4.9 portions of zinc oxide, 1.8 to 2.2 portions of carbon black, 4.9 to 5.5 portions of calcium carbonate, 7.6 to 8.2 portions of stearic acid, 0.107 to 0.1198 portion of dibutyl phthalate, 0.38 to 0.60 portion of zinc stearate, 4.53 to 5.02 portions of coumarone resin, and 8.9 to 9.5 portions of magnesium oxide. The components of the materialare mixed reasonably; and actual detections show that a sole product manufactured by adopting a component formula of the material has good high temperature resisting capacity and can meet high temperature resistant use requirements.

The invention discloses a washing-resistant flame-retardant polyester cotton blended fabric and a preparation method thereof. The fabric contains flame-retardant terylene fiber and flame-retardant cotton fiber, and is characterized in that the outer surface of the formed fiber of the polyester cotton blended fabric is soaked by glue liquid containing fire retardants and crosslinking agents; then, the flame-retardant terylene fiber and flame-retardant cotton fiber with the outer surface soaked with the fire retardants and the crosslinking agents are subjected to grafting reaction to form a surface layer material; then, soaping, rinsing and drying are performed; the washing-resistant flame-retardant polyester cotton blended fabric is obtained. The washing-resistant flame-retardant polyester cotton blended fabric has the characteristics of flame-retardant performance, water washing resistance and the like; the production process is simple; the efficiency is high; wide application prospects are realized in the fields of decoration materials, individual protection garments and the like for industrial and traffic buildings with fireproof requirements in electric power, petroleum and the like; the practicability is high.

The invention discloses a cold spraying welding method used for improving the strength of dissimilar metal joints and based on the interface pinning effect, and the cold spraying welding method is used for connecting of a first metal and a second metal, wherein the first metal is fine copper, and the second metal is fine aluminum. The cold spraying welding method specifically comprises the following steps that (1), the groove surfaces of the first metal and the second metal are subjected to pre-treatment; (2), cold spraying is conducted through composite powder B, and a composite coating layer is formed in each of the groove surfaces of the first metal and the second metal; and (3), cold spraying is conducted through composite powder A, grooves of the first metal and the second metal are filled to form sedimentary bodies, and thus connecting of the first metal and the second metal is achieved. According to the cold spraying welding method used for improving the strength of the dissimilar metal joints and based on the interface pinning effect, through spraying of the composite layers which have a certain thickness, the pinning effect and the interface reinforcing effect, then the sedimentary bodies are formed through cold spraying and connected with the dissimilar metal joints with a certain groove, and finally a connecting body with high combined strength is obtained; connecting of the aluminum and the copper which are complex in structure can be achieved, the interface combined strength is high, the temperature in the connecting process is low, and oxidation and a new phase are not fundamentally generated.

The invention discloses a high temperature resistant release adhesive tape as well as a preparation method and the use of the adhesive tape. The high temperature resistant release adhesive tape is composed of a release layer, a substrate and an adhesive layer, wherein the release layer and the adhesive layer are formed on the substrate in a coating or spray-coating manner; the substrate is a thin film prepared from the mixed material of PA6 and PA66, or PA6, or PA66 as a major material. The preparation method comprises the following steps: firstly, preparing the substrate from the mixed material of PA6 and PA66, or PA6, or PA66 as the major material; secondly, treating the thin film by use of a corona treater to reduce the surface energy; thirdly, forming the release layer and the adhesive layer on the corresponding release surface and adhesive surface of the thin film in a coating or spray-coating manner respectively; and finally, slitting and curling, and packaging to obtain a finished product. The high temperature resistant release adhesive tape is low in cost, and capable of bearing the use temperature within the range of 150 to 220 DEG C without melting, embrittlement, breakage and the like. The high temperature resistant release adhesive tape can be widely applied to composite materials, and to the fields of bicycle frame five-way part wrapping, the difficult corner mold stripping parts of other pipe fittings, vacuum-pumping process sealing adhesive tapes in the electronic industry and the like.

The invention discloses a refractory material, which contains thermally conductive fiber. The refractory material has good thermal conductivity. In addition, the invention also provides a preparation method of the refractory material, a stove kiln with the refractory material, a flash smelting furnace and a smelting system.

The invention relates to the technical field of automobile glass ink, and discloses acid and alkali resistant automobile glass ink and a preparation method thereof. The automobile glass ink comprisesthe following components in parts by weight: glass powder, varnish, chrome iron brown, composite glass fibers, zinc stearate, a leveling agent and fumed silica. The preparation method comprises the following steps: stirring the glass powder, the varnish, the zinc stearate and the fumed silica at a rotating speed of 500-800 r/min for 10-15 min, then adding the composite glass fibers, the chrome iron brown and the leveling agent, and stirring the mixture at a rotating speed of 1000-1500 r/min for 20-30 min to obtain the acid and alkali resistant automobile glass ink. The glass ink prepared by the method has good acid and alkali resistance.

The invention provides a method of separating vanadium and titanium efficiently from a vanadium slag mixed material. The method is characterized by comprising the following steps: (1) crushing and screening; (2) water quenching vanadium slag; (3) crushing and screening; (4) mixing; (5) tabletting; (6) roasting and activating; (7) roasting selectively; (8) cooling and uniformly mixing; (9) leaching; and (10) preparing vanadium pentoxide. Raw materials in the roasting process are prevented from being fused and decomposed by adding a silicon dioxide mixed material to tablet. Vanadium and titaniumare sulfated by ammonium sulfate roasting, and sulfate of titanium is decomposed by means of selective roasting, so that vanadium and titanium in the vanadium slag are separated. The method reduces the energy consumption needed by a conventional vanadium slag roasting and vanadium extracting process, and a tablet is roasted invariable in shape in the reaction process, and the condition that the service life is affected as the tablet is adhered to a reactor is avoided. The method is a typical low-carbon, green and environment-friendly vanadium slag utilization technique.

The invention relates to synthetic fiber paper for a highly heat-resistant circuit board with negative thermal expansion coefficient and a preparation method and application. The synthetic fiber paper is prepared from the following components in percentage by weight: 10-90% of structural fiber and the balance of viscose fibers, wherein the viscose fibers are fibers with negative thermal expansion coefficient and are selected from poly-p-phenylene terephthamide precipitation fibers and/or poly (p-phenylene terephthalamide) pulp. The preparation method comprises the following steps: preparing the structural fibers and viscose fibers into papermaking pulp; papermaking and moulding by a wet process; and hot-rolling and calendering to prepare the synthetic fiber paper. X-Y axis thermal expansion coefficient (CTE) in a plane of the synthetic fiber paper is negative and can offset CTE of thermosetting resin in a substrate of a printed circuit board, so that the printed circuit board is relatively stable and reliable, and the synthetic fiber paper can be applied to preparing a reinforcing material of the substrate of the printed circuit board.