87results about How to "Improve crystallization ability" patented technology

The invention relates to a glass ceramic pipe and a preparation method thereof. The glass ceramic pipe is prepared from the following raw materials in percentage by weight: 20 to 40 percent of coal ash, 20 to 50 percent of slag obtained by separating Baiyunebo tailings again, 0 to 40 percent of blast furnace slag or steel slag, 15 to 30 percent of quartz sand, 2 to 5 percent of sodium carbonate, 2 to 7 percent of borax, 0 to 5 percent of dolomite or lime stone, and 0 to 6 percent of albite or potash feldspar; and the preparation method comprises the following steps of: measuring the raw materials according to the ratio and then adding into a ball-milling mixing machine and mixing uniformly and melting the mixture at the temperature of between 1,350 and 1,450 DEG C; and performing centrifugal casting and molding; annealing, coring and crystallizing the molded pipe, and reducing the temperature at a speed of 1 to 5 DEG/min to the temperature of less than 100 DEG C and then discharging. The product has good performance, the abrasive resistance of the product is three times higher than that of a glass-ceramic tube, the weight of the product is only one third that of a glass-ceramic composite tube, the service life of the product is 3 to 5 times that of the glass-ceramic composite tube, and the cost performance of the product is high. The utilization rate of industrial waste residue in the raw materials is more than and equal to 70 percent, and the pipe is energy-saving and environment-friendly, has low production cost, is suitable for large-scale industrial production and has a wide application range.

The present invention discloses a preparation method of a polyester chip for a solar battery back film. A polyester chip semi-finished product with intrinsic viscosity of 0.60-0.64 dl/g and terminal carboxyl group content of 12-18 mol/t is subjected to solid phase polycondensation to obtain the polyester chip for solar battery back film with intrinsic viscosity of 0.75-0.80 dl/g and terminal carboxyl group content of 5-10 mol/t. The preparation method has simple reaction conditions and low production costs; the obtained polyester chip can be separately produced into polyester film suitable for solar battery back without the addition of an anti-hydrolysis agent or an ultraviolet absorber, wherein the polyester film has good water vapor barrier property, resistance to wet heat aging and resistance to light aging. The method is not only friendly to the environment and human, but also avoids the problems of uneven dispersion and inconsistency of product performance of blend film production.

The invention provides optical glass with B2O3, La2O3 and Gd2O3 as the main components, and the optical glass contains no thorium, cadmium and arsenic, and preferably contains no lead and fluorine. The refractive index (nd) of the optical glass is in a range of 1.80 to 1.81, and the Abbe number (vd) of the optical glass is in a range of 45 to 48. According to tests by the method of GB/T17129, water resistance (DW) of the optical glass is of grade 1, and acid resistance (DA) is of grade 3 or of a higher grade. On a mass percentage basis, the optical glass comprises 0 to 5% of SiO2, 23 to 32% of B2O3, 28 to 36% of La2O3, 3 to 7% of ZrO2, 0 to 6% of Nb2O5, 0 to 5% of ZnO, less than 2% of Y2O3, 20 to 28% of Gd2O3, 0 to 4% of WO3, 0 to 3% of TiO2, 0 to 2% of Sb2O3 and 0 to 5% of sigma(R2O + RO). The optical glass has good crystallization performance and is suitable for production.

The invention relates to low melting point optical glass, belonging to the low melting point optical glass without lead, arsenic, bismuth and fluorine, which resolves the problem that the existing optical glass has high transformation temperature, insufficient chemical stability, big glass specific weight and the like. the technical scheme of the invention is that the content of percentage by weight comprises: P2O5 holding 18-40%, Nb2O5 holding 20-40%, TiO2 holding 0-10%, WO3 holding 0-15%, B2O3 holding0-15%, R2O holding 10-45%, RO holding 0-20%, Sb2O3 holding 0-1% and total content holding 100%. The glass of the invention does not contain lead, arsenic, bismuth and fluorine, the transformation temperature of which is low (Tg < 500DEG C), the glass is adaptable to precise compression, the refractive index is 1.65-1.85, Abbe number is 20-35, chemical stability is good, bending and separation property is good, and the glass is easy in melting and processing, low in density and comparatively light in color.

The invention relates to a microcrystalline glass solder and a method for soldering porous Si3N4 (silicon nitride) and dense Si3N4 by using the microcrystalline glass solder, in particular to a methodfor soldering dense Si3N4 and porous Si3N4 by the microcrystalline glass solder, which aims at solving the problem of mismatching between the existing common microcrystalline glass solder and the thermal expansion coefficients of porous Si3N4 ceramic and dense Si3N4 ceramic. The microcrystalline glass solder is prepared from the following components of CaO (calcium oxide), Al2O3 (aluminum oxide),SiO2 (silicon dioxide) and Li2O (lithium oxide). The method comprises the following steps of 1, preparing the microcrystalline glass solder; 2, soldering the dense Si3N4 ceramic and the porous Si3N4ceramic. The method is characterized in that the Li2O is added into a CaO-Al2O3-SiO2 system using separated anorthite as a main crystal phase, so as to reduce the melting temperature; spodumene with low thermal expansion coefficient is separated out, so as to reduce the thermal expansion coefficient, thereby matching with the thermal expansion coefficient of base metal. The microcrystalline glasssolder is applied to connect the dense Si3N4 ceramic and the porous Si3N4 ceramic.

The invention provides optical glass which takes SiO2, B2O3, BaO and La2O3 as main components and contains no lead, thorium, cadmium, arsenic and fluorine. The refractive index (nd) of the optical glass is between 1.68-1.70, and the abbe number (vd) of the optical glass is 48-50. The optical glass has the characteristic of good crystallization property and is suitable for production. Through test according to a GB/T 17129 method, the water resistance (DW) of the optical glass is grade 1, and the acid resistance of the optical glass (DA) is grade 3 or above. The optical glass comprises the following components in percentage by weight: 21-25 percent of SiO2, 8-14 percent of B2O3, 12-18 percent of La2O3, 0.5-3 percent of ZrO2, 34-40 percent of BaO, 2-5 percent of TiO2, 2-5 percent of ZnO, 2-7 percent of CaO, 0-3 percent of Al2O3 and 0-1 percent of Sb2O3, and the total content of the components is above 95 percent, and the total content of glass components is 100 percent.

The invention discloses optical glass and an optical element, wherein the optical glass comprises the following components: 40-60wt% of Nb2O5, 16-40wt% of P2O5, 8-25wt% of TiO2 and 0.5-10wt% of BaO; and the optical glass does not contain a clarifier. Experimental results indicate that the optical glass provided by the invention does not need to be added with the clarifier or a non-environment-friendly substance Sb2O3, and when the refractive index of the optical glass is 1.91-1.98, the Abbe number is 14-20, and the transmittance is 70 percent, the corresponding wavelength is smaller than 470nm, and the requirement on modern imaging equipment is satisfied.

The invention provides lanthanum borosilicate optical glass taking SiO2, B2O3, La2O3, Nb2O5, ZrO2 and TiO2 as primary ingredients, wherein the optical glass does not contain substances harmful to the environment, for example, lead, thorium, cadmium, arsenic, fluorine and the like, and does not contain valuable materials such as Ta2O5, Gd2O3 and the like; the refractive index (nd) of the optical glass is 1.75-1.77; the abbe number (vd) is 39-41; and the optical glass has the characteristics of being good in crystallization properties, good in pigmentation degree, and suitable for production. Based on the weight percent of the compound, the optical glass contains 8-14% of SiO2, 19-26% of B2O3, 18-23% of La2O3, 0-5% of Y2O3, 2-5% of ZrO2, 5-10% of Nb2O5, 20-25% of BaO, 0-4% of SrO, 0-5% of CaO, 0-2% of ZnO, 0-3% of WO3, 1-5% of TiO2, and 0-1% of Sb2O3, wherein the sum of the contents of La2O3 and Y2O3 is 19-25%; and the sum of the contents of BaO and CaO and SrO is 22-27%.

The invention provides optical glass without containing fluorine, phosphorus or tantalum. The optical glass is high in chemical stability, excellent in crystallization property and high in transmittance. The optical glass comprises the following components in percentage by weight: 10-40% of SiO2, 5-20% of B2O3 (not including 20%), La2O3 more than 5% but less than or equal to 15%, and 20-50% of BaO. According to the reasonable formula design, the optical glass lambda 80 is less than or equal to 360nm when the optical glass has the refractive index of 1.62-1.70 and the abbe number of 50-60, the upper limit of a devitrification temperature of the glass is below 940 DEG C, and the water resistance stability DW of the glass is over class 1. Moreover, the optical glass does not contain fluorine, phosphorus or tantalum, and has excellent chemical stability, crystallization property and transmittance.

The invention discloses a method for preparing glass ceramic by sintering bulk of solid waste coal gangue and rice husk ash serving as main raw materials. The glass ceramic provided by the invention is prepared from the following raw materials in parts by weight: 28.1 to 32.5 parts of coal gangue, 4.0 to 6.5 parts of rice husk ash, 3.5 to 5.0 parts of sodium carbonate, 7.0 to 8.5 parts of calciumcarbonate, 2 to 3 parts of magnesium oxide and 2 to 3 parts of titanium dioxide. The method comprises the following steps: mixing the ingredients evenly, and heating to a melting temperature of 1,400to 1,450 DEG C; performing quenching, ball milling and tableting on the obtained glass melt, preserving heat at 740 to 790 DEG C and 820 to 870 DEG C for 1 to 1.5 hours, and performing heat treatmentto obtain glass ceramic which takes calciclase as a principal crystalline phase and takes diopside as a secondary crystalline phase. A large amount of SiO2 in the rice husk ash serving as a raw material reduces the high aluminum characteristic of the coal gangue, adjusts the ratio of Si to Al in the formula, and improves the utilization ratio of the solid waste coal gangue and rice husk; moreover,the method has the advantages of simple formula composition, low melting temperature and relatively low heat treatment temperature; the prepared glass ceramic has high compactness, corrosion resistance and wear resistance, and the added value of two solid wastes of coal gangue and rice husk is greatly increased.

The invention provides high refractive index and low dispersion lanthanide-series optical glass which is suitable for production and secondary compression. The high refractive index and low dispersion lanthanide-series optical glass comprises SiO2, B2O3, La2O3, ZrO2, Nb2O5, ZnO, Y2O3 and TiO2 which are taken as necessary components, and 0-1wt% of Sb2O3 taken as optional component; the optical glass does not contain Th, Cd or As; the content of SiO2 is more than that of B2O3; the refractive index (nd) is between 1.90 and 1.92; and the Abbe number (vd) is between 33 and 36.

The invention provides optical glass. The optical glass is prepared from, by weight, 5-25% of SiO2, 0-15% of B2O3, 10-30% of La2O3, 13-35% of TiO2, 2-25% of Nb2O5 and 5-25% of BaO. According to the optical glass, through the reasonable formula design, the refractive index of the optical glass is 1.92-2.0, the Abbe number is 20-28, and the optical glass has excellent chemical stability and good crystallization resistance and transmittance and can be widely applied to equipment such as surveillance cameras, digital cameras, digital video cameras and camera mobile phones.

The invention provides optical glass taking SiO2, Nb2O5, BaO and La2O3 as main components of the optical glass without lead, thorium, cadmium, arsenic and fluorine. The refractive index (nd) of the optical glass is between 1.78 and 1.82, and the abbe number (vd) is between 27 and 32. The optical glass has the characteristics of being good in pigmentation degree and crystal separation performance and suitable for production. The optical glass comprises the following compounds by weight percentage: 19% to 25% of SiO2, 5% to 10% of B2O3, 4% to 9% of La2O3, 19% to 27% of Nb2O5, 4% to 10% of Na2O, 0% to 3% of Li2O, 2% to 6% of CaO, 10% to 15% of BaO, 0% to 4% of SrO, 5% to 10% of TiO2, 4% to 8% of ZrO2, 3% to 8% of WO3 and 0% to 1% of Sb2O3, wherein the total content of the oxides accounts for more than 99%.

The invention discloses environmental-friendly microsphere glass with high refractive index and a preparation method thereof, wherein the microsphere glass comprises the following raw material components in percentage by weight: 33-53% of TiO2, 30-53% of BaO, 1-8% of SiO2, 0-10% of ZrO2, 0.5-3% of CaO, 1-5% of SrO, 0-3% of TeO2, 0-5% of WO3, 0-2% of Nb2O5, 0-1% of La2O3, and 1-2% of Bi2O3; and the preparation method comprises the steps of: evenly mixing the raw material components; melting and homogenizing the components in a platinum crucible or a refractory matter tank furnace at a temperature of 1380-1480 DEG C; carrying out quenching after the melting, crushing to the particle size of 20-90mum and adopting a flame spraying method to manufacture the product. The microsphere glass provided by the invention can be produced in large scale by adopting the platinum crucible and the refractory matter tank furnace, does not include hazardous elements, and has the advantages of lower cost and favorable crystallization property and high-temperature viscosity property.

The invention discloses a formula of lanthanides optical glass TZLaF5 with high refraction index, low dispersion and environmental protection, and a production technology thereof. The lanthanides optical glass comprises the following components in percentage by weight: 5 to 10% of SiO2, 15 to 20% of B2O3, 25 to 36% of La2O3, 28 to 40% of Gd2O3, 4 to 10% of ZrO2, 5 to 10% of Ta2O5, 1 to 5% of ZnO, 1 to 5% of BaF2, and 1 to 5% of Al2O3. The lanthanides optical glass is produced by the steps of mixing the components, founding at the temperature of 1430 to 1480 DEG C, molding at 1200 DEG C, and performing fine annealing on the molded mixture for about 7 days at the temperature of 650 to 700 DEG C. The TZLaF5 is the lanthanides optical glass with high refraction index and low dispersion for producing digital camera, digital video, high-grade mobile phone and the like.

The invention discloses a chemically strengthened glass plate comprising a surface compressive stress layer and a base layer; the compressive stress layer consists of an outer layer and an inner layer, the inner layer is located between the outer layer and the base layer; the outer layer satisfies the requirements: the outer layer comprises, by the weight percentage based on oxides in the outer-layer, 58-62% of SiO2, 13-16.5% of Al2O3, 2.5-7% of Na2O, 7.8-16.1% of K2O, 5.5-7.1% of MgO, 0-0.9% of ZrO2, 0.005-0.015% of Fe2O3, and 0% of CaO. The inner layer satisfies the requirements: the inner layer comprises, by the weight percentage based on oxides in the inner layer, 58-62% of SiO2, 13-17.5% of Al2O3, 2.5-14.7% of Na2O, 3.8-16.1% of K2O, 4.5-7.1% of MgO, 0-0.9% of ZrO2, 0.005-0.015% of Fe2O3, and 0% of CaO. The base layer satisfies the requirements: the base layer comprises, by the weight percentage based on oxides in the base layer, 58-62% of SiO2, 13-17.5% of Al2O3, 12.5-14.7% of Na2O, 3.8-6.1% of K2O, 4.5-7.1% of MgO, 0-0.9% of ZrO2, 0.005-0.015% of Fe2O3, and 0% of CaO.

The invention relates to a technique for the preparation of phosphorus dregs cast stone used for construction decoration and using high temperature phosphorus dregs fluid. The invention is characterized in that: firstly, the configuration and the preheating of auxiliary raw material: quartz sand and kaoline are taken as auxiliary raw materials and heated to 1,300-1,450 DEG C; secondly, hot ingredient: the high-temperature phosphorous dregs fluid, which is discharged from a phosphorus electric stove, passes a fluid groove and flows into a pond kiln, and the auxiliary raw material is put into a pond kiln simultaneously, wherein, the quality ratio of the phosphorus dregs to the auxiliary raw material is 65-75:25-35; thirdly, melting: the melting mix of the phosphorous dregs and the auxiliary raw material reaches 1,450-1,580 DEG C; fourthly, shaping; last, crystallization and annealing: the crystallization is processed under 1,000-1,150 DEG C for 60-120 minutes, and then is annealed to room temperature, thus a product is made. The invention can effectively use the thermal energy of the high-temperature phosphorous dregs fluid to realize the conversion of the phosphorous dregs fluid into the resources and reduce the energy consumption and the cost of cast stone production, thereby causing the phosphorous dregs cast stone adaptive to the purpose of large-scale construction decoration.

The invention discloses an optical fiber skin layer glass for an optical fiber image transmission element and a mechanical pipe-drawing forming method of the optical fiber skin layer glass. The optical fiber skin layer glass composition for the optical fiber image transmission element comprises the following components in percentage by mole: 72.0-80.0% of SiO2, 5.5-7.0% of Al2O3, 2.0-8.0% of B2O3,3.0-8.0% of Na2O, 2.0-7.0% of K2O, 1.0-3.0% of CaO, 0.1-2.0% of SrO, 0.1-2.0% of ZnO, 0.1-0.9% of ZrO2, 0.1-0.9% of TiO2 and 0.1-0.2% of Sb2O3. The preparation method by the mechanical pipe-drawing forming comprises the following steps: melting glass; carrying out clarifying and homogenizing; carrying out pipe-drawing forming; and carrying out cutting and annealing. The disclosed skin material for the optical fiber image transmission element is excellent in chemical property, stable in glass composition, low in refractive index and excellent in anti-crystallization property.

The invention relates to a micro-channel plate cladding glass, a micro-channel plate, and a preparation method thereof. The micro-channel plate cladding glass comprises the following components in parts by weight: 52 to 57 parts of SiO2, 0 to 2 parts of Al2O3, 1 to 4 parts of B2O3, 15 to 18 parts of Bi2O3, 5 to 7 parts of SnO2, 2 to 4 parts of In2O3, 0.5 to 2 parts of Sb2O3, 8 to 10 parts of Na2O and Cs2O, and 6 to 8 parts of MgO, CaO, and BaO. The micro-channel plate cladding glass and micro-channel plate prepared therefrom have the characteristics of non-toxicity, innocuousness, and environment-friendliness.

The invention discloses a super-stain-resistant ceramic tile color-retaining glaze, a stain-resistant ceramic tile and a preparation process of the stain-resistant ceramic tile. The super-stain-resistant ceramic tile color-retaining glaze is prepared from the following components in percentage by weight: 20 to 25 percent of potassium feldspar, 15 to 20 percent of albite, 6 to 15 percent of kaolin,0.5 to 3 percent of talc, 6 to 10 percent of quartz, 2 to 3 percent of zinc oxide, 2.5 to 3 percent of boron-zirconium frit, 10.5 to 20 percent of attapulgite and 5 to 9 percent of calcium phosphate;wherein the mass ratio of the boron-zirconium frit to the attapulgite to the calcium phosphate is 1: (3-6): (2-3). According to the invention, attapulgite with a layered structure is added; both theglaze and agreen body contain a large amount of bound water; during firing, the glaze discharges water; more air holes are generated in the drainage process; formed capillary channels are used for allowing gas generated in the sintering process of carbonate raw materials in the subsequent glaze to escape; the glaze continues to be heated, the components are further molten to fill and level up thecapillary channels, pores in the surface of the ceramic tile are reduced, gas generated during firing is discharged along the capillary channels, the pores of the ceramic tile are obviously reduced, the surface is smooth, and the stain-resistant effect of the super-stain-resistant ceramic tile color-retenting glaze is enhanced.

The invention provides a method for preparing high-tenacity high-hardness anti-dazzle glass. The method comprises the steps that firstly, raw materials needed for manufacturing the glass are prepared, then the raw materials are evenly mixed and ground to obtain a mixture, the mixture is placed in a smelting furnace, and then composite clarifying agents are added for clarifying; the mixture is cooled to room temperature, a material a is obtained, the material a is formed, then annealing treatment is carried out, and a material b is obtained; after coring treatment and crystallization treatment are carried out on the material b, a material c is obtained; the material c is preheated, preheating temperature ranges from 720 DEG C to 820 DEG C, and heat preservation is carried out for 1-2 h; then the material c is placed in frosting liquid to be soaked for 60-80 s, a polishing solution is sprayed to the material c for 3-10 min, then the material is taken out to be washed, dried and air-cooled to room temperature, and the high-tenacity high-hardness anti-dazzle glass is obtained.

The invention discloses membrane-coated drug-loaded microspheres. Microcrystalline cellulose, organic calcium and bis (2-ethylhexyl) sodium sulfosuccinate are adopted as pore-forming agents of macroporous porous silicon, mesoporous or hollow or three-dimensional penetrating porous silicon dioxide is obtained after calcination, then acidizing treatment is conducted through hydrochloric acid, calcium in a silicon-calcium skeleton is dissolved and removed, and macroporous and three-dimensionally penetrated porous silica is obtained, the porous silicon framework and the surface of the porous silicon are very rough, pits and grooves are very rich, and loading and adhesion of drugs are facilitated. Besides, a drug-sustained-release parasite-expelling pet collar is prepared by using the membrane-coated drug-loaded microspheres so that the obtained pet collar has a good parasite-expelling effect, a long-acting sustained-release effect and a good quality guarantee effect. The product technology is mature, the production operation is simple and easy to understand, and the production cost is relatively reasonable.

The invention discloses a white crystal flower frit, a white crystal flower decorative ceramic tile and a preparation method thereof. The white crystal flower frit comprises the following chemical components in percentage by mass: 0.34%-0.52% of ignition loss, 40.89%-42.10% of SiO2, 26.46%-28.31% of Al2O3, 0.09%-0.25% of Fe2O3, 0.12%-0.16% of TiO2, 3.98%-4.62% of CaO, 1.64%-2.28% of MgO, 2.08%-3.95% of K2O, 1.73%-2.15% of Na2O, 3.78%-4.45% of ZrO2, 6.98%-8.01% of CeO2, 5.98%-7.78% of ZnO, 2.01%-2.78% of BaO, 0.83%-1.07% of PbO, and 0.09%-1.12% of As2O3.