263results about How to "Reduce high temperature viscosity" patented technology

The invention relates to a multicolor furnace transmutation glaze ground coat and a manufacturing method thereof. The manufacturing method comprises the step of adding a part of chromogenic oxides into feldspar, quartz, calcite, talc and kaolin which are selected as ground coat raw materials. Moreover, the ratio of silicate to aluminium of the ground coat must be over six, so that solution can be decomposed at high temperature to release gas to form a plurality of fine and dense small bubbles and defects are formed on the surface of a glaze layer; and then suitable cover glazes are matched to generate various furnace transmutation effects. According to a process formula of the glaze of the ground coat, the multicolor furnace transmutation glaze ground coat comprises the following components in part by weight: 45 parts of feldspar, 18 to 25 parts of quartz, 12 to 18 parts of calcite, 2 to 5 parts of talc, 5 to 12 parts of kaolin, 10 to 14 parts of iron oxide red and 2 to 5 parts of manganese carbonate. The ground coat prepared according to the process formula comprises the following chemical compositions: 58 to 64 percent of SiO2, 8 to 11 percent of Al2O3, 7 to 9.8 percent of CaO, 0.4 to 1.6 percent of MgO, 4 to 5.8 percent of K2O, 0.9 to 1.2 percent of Na2O, 9 to 13 percent of Fe2O3 and 0.9 to 2.3 percent of MnO.

The invention discloses a bituminous mixture used for a thin layer overlay of cement concrete pavement and preparation and construction methods of the bituminous mixture. The bituminous mixture comprises mineral aggregate, bitumen, a fiber stabilizer and an additive, wherein filler in the mineral aggregate is copper tailing power. The bituminous mixture has the advantages that the copper tailing power is used as the filler in the bituminous mixture, thus copper tailing is comprehensively recycled. Besides, the bituminous mixture is superior in performances, is easily compacted, and can be paved on the cement concrete pavement for 1.5-2.5cm; the damaged pavement can be quickly repaired after construction; the smoothness and the skid resistance of the pavement are restored; the quality of the pavement is improved; the service life of the pavement is prolonged; driving comfort and safety are improved; the pavement can also be precured; the construction cost is lowered; energy and resources are saved; influences on environment and facilities are reduced; and the like. Moreover, the preparation method and the construction method of the bituminous mixture are simple and practicable, easy to operate and high in practicability.

The invention discloses an ultrahigh-alkalinity crystallizer mould flux special for high-pulling-rate peritectic steel. 38%-42% of CaO, 25%-29% of SiO2 and 7%-10% of F- are adopted to improve the crystallization capacity of the mould flux, reduce stress concentration and improve lubrication; 2%-5% of MgO and 2%-5% of Al2O3 are adopted to improve the fluidity of a flux film and reduce cracks; an excellent heat transfer coordination and heat transfer control effect is achieved by adopting the mould flux with the alkalinity ranging from 1.35 to 1.52, 25%-29% of SiO2, 2%-5% of Al2O3 and 2%-5% of MgO; the effects of effectively controlling the melting rate to guarantee melt flux feeding and preventing subsurface blowholes can be achieved with the carbon proportioning range of 4%-7%. Raw materials for preparing the ultrahigh-alkalinity crystallizer mould flux can be easily obtained, the flux consumption ranges from 0.32 kg per ton of steel to 0.38 kg per ton of steel, and cost of per ton of steel is low; on-spot practical application indicates that the mould flux can be well spread in a crystallizer and be evenly and stably melt and is high in casting percent of pass.

The invention relates to a glass fiber production prescription, in particular to an environment-friendly alkaline-free glass fiber prescription emitting less toxic gas. The prescription is characterized in that the components include SiO2, Al2O3, B2O3, CaO, MgO, K2O and Na2O2. Compared with the E glass fiber widely applied presently, the glass fiber prepared with the prescription of the invention is improved as follows: the raw material containing floride which is most harmful is completely abandoned and the raw material containing volatile boron is largely reduced, but the glass fiber of the invention still remains similar electric performance and mechanical performance. The invention is characterized in that an alkaline-free glass fiber using blast furnace slag as one of the main raw materials, realizing reduction of operation difficulty and great reduction of exhaust emission is preferential and can be produced directly in large scale in a tank furnace including an electric boosting structure. The use of an industrial raw material easy for melting and clearing, namely, the blast furnace slag, ensures the glass fiber to have similar operating performance as the E glass fiber and to adapt to large-scale production under the existing E glass fiber tank furnace production technology.

The invention discloses a glass ceramic for a blue light-excited white-light LED (Light-Emitting Diode), and a preparation method thereof. The glass ceramic is structurally characterized in that R3M5O12:Ce, R' micrometer crystallized phase is inlaid in an oxide glass substrate, wherein R is one of Y, Gd, Lu, Sc and La; M is one of Al, Ga and In; R' is one of Eu, Sm, Pr and Mn; the content of the micrometer crystallized phase accounts for 10-50wt% of the glass ceramic. The glass ceramic is prepared by adopting a melt quenching method or combining the melt quenching method with follow-up thermal treatment. The glass ceramic can be used as a fluorescent material for manufacturing a novel blue light-excited white-light LED device.

The invention discloses mud for sanitary ceramics and a mud preparation process. The mud is mainly made of multiple raw materials and water by means of mixing and ball milling. The raw materials include 30-50wt% of water washed kaolin, 10-20wt% of weathered feldspar, 15-25wt% of pyrophyllite, 20-30wt% of sericite, 0.1-4wt% of wollastonite and 0.1-4wt% of calcined talc, and usage of water is 40-45wt% of the amount of the raw materials. The pyrophyllite, the water washed kaolin, the wollastonite and the calcined talc which have low-temperature sintering characteristics and the sericite and the weathered feldspar which have high high-temperatuare fusibility are used as the raw materials, and by means of the reasonable proportion, high-temperature components SiO2+Al2O3 of mud can be controlled within a low range, MgO, CaO,K2O and Na2O which are high in fusibility are increased, and the components with granularity smaller than 10um in the mud account for 65wt%-70wt%, so that the mud can be easily sintered. Compared with the prior art, the mud has the advantages that the mud can be formed by sintering at a low temperature (1150 DEG C), so that energy saving and consumption reduction are realized.

The invention relates to a medium-temperature high-white-zirconium-lithium raw opalescent glaze and a production method thereof. The invention belongs to an opalescent glaze used for a ceramic product and a production method thereof. The invention mainly solves the technical difficulties of the prior opalescent glaze that the price is price; the cost is high; the fault of raw glaze surface can be easily produced; the color of the glaze surface is easily changed. A technical proposal adopted by the invention is the medium-temperature high-white-zirconium-lithium raw opalescent glaze which consists of feldspar, quartz, calcite, lithia porcelain, zircon powder, fluorite, talc, kaolin, trimeric sodium phosphate and additive, wherein, the weight percentages are 35 percent to 40 percent of feldspar, 10 percent to 15 percent of quartz, 5 percent to 10 percent of calcite, 12 percent to 15 percent of lithia porcelain, 10 percent to 15 percent of zircon powder, 1 percent to 2 percent of fluorite, 5 percent to 10 percent of the talc, 5 percent to 10 percent of kaolin, 0.1 percent to 0.2 percent of the trimeric sodium phosphate and 0.1 percent to 0.25 percent of additive. The production method of the invention consists of the steps as follows: firstly, the raw materials are washed and picked; secondly, the glaze materials are proportioned according to the weight percentages; thirdly, the glaze materials are processed for wet ball milling; fourthly, when the glaze materials is out from a mill, the glaze materials are processed for removing iron and sieving by strong magnet.

The invention relates to an anticorrosive paint and a preparation method thereof, particularly an environment-friendly fluorine/silicon-containing heavy anticorrosive epoxy resin paint and a preparation method thereof. The paint is composed of 30-70g of fluorine-containing epoxy resin, 10-40g of curing agent, 0.1-5g of POSS (polyhedral oligomeric silsesquioxane), 0.5-5g of silane coupling agent, 10-30g of reactive diluent, 0.5-3g of dispersant and 0.1-3g of photostabilizer. The paint provided by the invention has the advantages of high fluorine content, favorable adhesion to the substrate, simple construction technique, excellent corrosion resistance and excellent weather resistance, and is especially suitable for an anticorrosive coating under harsh conditions. The paint uses the reactive diluent capable of participating in curing reaction as the solvent instead of the organic volatile solvent component, and thus, has an environment-friendly function, thereby having great popularization and application value.

The invention belongs to the technical field of paint, and relates to glass protection lubricant powder used for titanium alloy die forging forming and paint. The glass protection lubricant powder comprises silicon dioxide (SiO2), sodium oxide (Na2O), calcium oxide (CaO) and boric oxide (B2O3). Brush coating is conducted through suspension prepared from heat-resistant type water-soluble cellulose and water, wherein the grain size of glass powder is 200 meshes or below. The use temperature range of the glass protection lubricant is wide and is between 700 DEG C and 1000 DEG C, melting begins at the temperature of 700 DEG C, and no flowing happens at the temperature of 1000 DEG C. the forging process temperature of titanium alloy is 945+/-15 DEG C. The high temperature viscosity change range of the glass protection lubricant is narrow, and melting coverage can be achieved within the short time of 8 minutes or less. The flowing and protection deficiency phenomena do not happen within the heat preservation time of 8 hours. In addition, the high-temperature contact angle of the prepared glass protection lubricant on the surface of TC4 titanium alloy is small, the temperature is 40 degrees lower than the temperature of 945+/-15 DEG C, and in other words, the titanium alloy surface wettability is good. The friction coefficient measured through a circular ring test is lower than 0.01.

The invention relates to a preparation method for a polyester amide hot melt adhesive. The preparation method includes the steps of: 1) adding a binary acid, a binary amine, a catalyst, and an antioxidant into a reactor, and stirring and heating the mixture under protection of nitrogen gas; 2) slowly increasing the temperature to 220-280 DEG C, and meanwhile continuously evaporating water generated in a reaction during the temperature increase, and performing the reaction for 1-3 h to obtain a polyamide prepolymer; and 3) adding polyether glycol or polyester glycol and performing a reaction for 1-5 h, vacuum-dehydrating the products for 1-3 h, and discharging the products under protection of nitrogen gas to prepare the polyester amide hot melt adhesive. The polyester amide hot melt adhesive has excellent high- and low-temperature resistance and mechanical performance, has high adhesion force on various substrates, is environment-friendly and solvent-free, and can be widely applied in the fields of automobiles and electronics.

The invention provides heat-resistant borosilicate flat glass and belongs to the technical field of fireproof glass. The heat-resistant borosilicate flat glass is prepared from, by weight, 78.1-82% of SiO2, 1-5% of Al2O3, 9-14% of B2O3, 3-6% of Na2O, 1-5% of CaO, 0.5-2% of K2O, 0.1-3% of ZrO2 and 0.01-2% of GeO2, wherein the total content of SiO2 and B2O3 accounts for 87.1-92% of the total content of all the materials, and the weight ratio of SiO2 to B2O3 is 5.5 to 8.6. The invention further provides a preparation method of the heat-resistant borosilicate flat glass; compared with current borosilicate flat glass in the market, the heat-resistant borosilicate flat glass has a higher glass softening point and a lower linear expansion coefficient, at the same time, the melting temperature and the molding temperature are relatively low; the glass is easy to manufacture and can serve as the fireproof glass applied in the fire protection field after being tempered.

The invention relates to a copolyamide hot melt adhesive and its preparation method. The copolyamide hot melt adhesive is composed of diacid, aliphatic diamine and an antioxidant. The preparation method comprises the following concrete steps of: (1) adding dimeric acid, aliphatic dibasic acid and the antioxidant into a reactor, stirring and heating under the protection of nitrogen, adding aliphatic diamine with continuously stirring, and reacting for 1-5 hours; (2) slowly heating up to the temperature of 220-280 DEG C while continuously steaming out water generated from the reaction, insulating, reacting for 1-3 hours and maintaining for 1-5 hours, and finally discharging under the protection of nitrogen to obtain the copolyamide hot melt adhesive. The copolyamide hot melt adhesive has low high-temperature viscosity, is easy to mold, has good high and low temperature resistance and mechanical properties, has low water absorption, is environmentally friendly and solvent-free, and can be widely applied in automobile electronic industry.

The invention discloses sintered flux for submerged-arc welding of a steel structure U-shaped rib plate. The sintered flux comprises, by mass percent, 15%-25% of MgO, 3%-8% of CaO, 15%-25% of CaF2, 2%-5% of MnO, 25%-35% of Al2O3, 10%-20% of SiO2, 3%-7% of TiO2 and 1%-3% of SiFe. According to the sintered flux, the welding speed can be increased, the stable fusion depth can be provided in the high-speed welding state, and welding forming is attractive.

The invention provides optical glass with a refractive index of 1.50-1.56, an Abbe number of 57-67 and low high-temperature viscosity. The optical glass comprises the following components in percentage by weight: 50-80% of SiO2, 3-20% of B2O3, 5-25% of Li2O, Na2O and K2O, and 0.05-5% of Al2O3 and ZrO2, and the ratio of (Li2O+Na2O+ K2O+ B2O3)/(SiO2+Al2O3) ranges from 0.2 to 0.8. Through reasonablecomponent design, the obtained optical glass has the advantages of expected refractive index and Abbe number, low high-temperature viscosity, excellent internal quality and light transmittance, low raw material cost, low production energy consumption, low unit nitrogen oxide emission and good process performance, and can meet the requirements of a one-time dropping molding process; and the opticalglass can be applied to the fields of high-precision imaging-level vehicle-mounted headlamp lens manufacturing and the like.

The invention provides Yb2O3-doped fluorine-free low-dielectric constant glass fiber and a preparation method thereof. The dielectric constant and dielectric loss of glass fiber are reduced through addition of rare earth oxide Yb2O3. The glass fiber composition does not contain the fluorine element at all, so that the environment is protected to a large extent. The glass fiber comprises the components: in percent by mole, 55-75% of SiO2, 5-20% of Al2O3, 7-15% of B2O3, 0-8% of CaO + MgO, 0.1-1% of Li2O + Na2O + K2O and 0.1-7% of Yb2O3. The dielectric constant and dielectric loss of the preparedglass fiber can reach a good level, the dielectric constant and dielectric loss at room temperature and 1 MHz are 4.4-4.97 and 3.1x10<-3)-8.45x10<-3> separately, and the glass fiber has excellent lowdielectric properties, good thermal stability and a wide molding temperature range at the same time, and is suitable for a reinforcing material for substrates for printed circuit boards.