38 results about "Calcium borate" patented technology

The invention discloses a preparation method of a three-dimensional split-phase fancy glaze for coal gangue ceramic body decoration, the three-dimensional split-phase fancy glaze comprises a ground glaze and a cover glaze, the cover glaze comprises the following raw materials by weight: 15-20% of quartz, 10-15% of calcite, 5-10% of kaolin, 5-10% of zinc oxide, 10-15% of calcium phosphate, 25-30% of potassium feldspar, 2-5% of calcium borate, 5-10% of tin dioxide, 3-5% of spodumene, and 2-5% of a coloring oxide; the ground glaze is prepared from the following raw materials in percentage by weight: 15-20% of quartz, 10-15% of wollastonite, 5-10% of kaolin, 10-15% of zinc oxide, 15-20% of calcium phosphate, 15-20% of spodumene, 5-10% of titanium dioxide, 5-10% of calcium borate, 2-5% of coal gangue and 2-5% of coloring oxide, and the product is obtained through raw material preparation, glazing and sintering. The prepared three-dimensional split-phase fancy glaze is simple in process, high in adaptability, unique in effect and wide in market prospect.

A particulate nanocomposite material comprising, as determined by X-ray diffraction (XRD): elemental carbon (C); elemental nickel (Ni) in a cubic crystalline phase; a cubic nickel oxide (NiO) crystalline phase; an orthorhombic calcium borate (CaB2O4) crystalline phase; and, a magnesium borate (MgB2O4) crystalline phase. The porous particulate nanocomposite is characterized in that, based on the total number of atoms in the particulate nanocomposite material: the atomic concentration of carbon is from about 1 atomic percent (at. %) to about 10 at. %; the atomic concentration of nickel is from about 1 at. % to about 10 at. %; the atomic concentration of boron (B) is from about 1 at. % to about 10 at. %; the atomic concentration of magnesium (Mg) is from about 5 at. % to about 15 at. %; and, the atomic concentration of calcium (Ca) is from about 1 at. % to about 10 at. %.

A particulate nanocomposite material comprising, as determined by X-ray diffraction (XRD): elemental carbon (C); elemental nickel (Ni) in a cubic crystalline phase; a cubic nickel oxide (NiO) crystalline phase; an orthorhombic calcium borate (CaB2O4) crystalline phase; and, a magnesium borate (MgB2O4) crystalline phase. The particulate nanocomposite material is characterized in that, based on the total number of atoms in the nanocomposite material: the atomic concentration of carbon is from about 1 atomic percent (at. %) to about 10 at. %; the atomic concentration of nickel is from about 1 at. % to about 10 at. %; the atomic concentration of boron (B) is from about 1 at. % to about 10 at. %; the atomic concentration of magnesium (Mg) is from about 5 at. % to about 15 at. %; and, the atomic concentration of calcium (Ca) is from about 1 at. % to about 10 at. %.

This invention discloses a black-based blue-spotted glaze with an earthworm-like pattern and its preparation method. The glaze consists of a body, a black base glaze, and a blue-spotted glaze from the inside out. The raw materials for the black base glaze are: feldspar, calcite, calcium borate, dolomite, talc, barium carbonate, quartz, bentonite, zirconium silicate, rutile, cobalt oxide, manganese oxide, and iron oxide. The raw materials for the blue-spotted glaze are: feldspar, limestone, alumina, talc, barium sulfate, Datong clay, zinc oxide, quartz, and titanium dioxide. The preparation method includes: 1. Wet ball milling the black base glaze raw materials to obtain a black base glaze slurry; 2. Wet ball milling the blue-spotted glaze raw materials to obtain a blue-spotted glaze slurry; 3. Bisque firing the body; 4. Applying the black base glaze slurry to the body and drying it; 5. Applying the blue-spotted glaze slurry to the body and drying it; 6. Oxidation firing and reduction firing of the body, followed by natural cooling to obtain the black-based blue-spotted glaze. The raw material formula of this invention is reasonable and environmentally friendly, which can improve the mechanical properties of the glaze; the preparation method is simple and the yield is high.

A particulate nanocomposite material comprising, as determined by X-ray diffraction (XRD): elemental carbon (C); an orthorhombic magnesium iron borate (MgFe(BO3)O) crystalline phase; an orthorhombic calcium diborate (CaB2O4) crystalline phase; and, a monoclinic magnesium diborate (Mg2B2O5) crystalline phase. The nanocomposite is further characterized in that, based on the total number of atoms in the particulate nanocomposite material and as determined by energy dispersive X-ray spectroscopy (EDX), the atomic concentration of carbon (C) is from about 0.1 atomic percent (atom %) to 5 atom %, the atomic concentration of calcium (Ca) is from about 5 to 15 atom %, the atomic concentration of boron (B) is from about 1 to 10 atom %, the atomic concentration of iron (Fe) is from about 5 to 15 atom %, and the atomic concentration of magnesium (Mg) is from about 5 to 15 atom %.

A CaB2O4 / Pb3O4 / Mg3B2O6 / C nanocomposite that includes orthorhombic calcium metaborate (CaB2O4), tetragonal lead tetroxide (Pb3O4), magnesium borate (Mg3B2O6), and carbon (C). The CaB2O4 / Pb3O4 / Mg3B2O6 / C nanocomposite includes 55 to 70 atomic percent (at. %) oxygen (O), 5.0 to 12.5 at. % calcium (Ca), 7.5 to 15 at. % magnesium (Mg), 7.5 to 15 at. % lead (Pb), 2.5 to 7.5 at. % boron (B), and 2.5 to 7.5 at. % carbon (C), each based on a total number of atoms in the CaB2O4 / Pb3O4 / Mg3B2O6 / C nanocomposite. The nanocomposite is used in a method of removing organic pollutants and / or heavy metals from water.

This invention relates to the field of polymer composite materials technology, and discloses a material and manufacturing process for resistance to damage and staining. The manufacturing process includes: weighing unsaturated polyester resin, aluminum hydroxide and / or magnesium hydroxide, quartz powder and / or calcium carbonate, organically modified montmorillonite, ammonium polyphosphate crystal form II, and anhydrous calcium borate according to the formula, mixing them to form a homogeneous slurry, then casting it into a gel mold, and finally curing and demolding it to obtain the product. This invention uses high aspect ratio organically modified montmorillonite sheets to fill the micropores on the surface of the product, and uses anhydrous calcium borate to replace zinc borate containing crystal water to eliminate pores during the curing stage. The two work synergistically to reduce surface porosity and achieve long-lasting stain resistance; using extremely low water solubility ammonium polyphosphate crystal form II to replace water-soluble phosphates ensures long-term stable flame retardant performance and batch consistency; the absence of anhydrous calcium borate eliminates interference with curing accelerators, resulting in stable molding quality; and each flame-retardant component takes effect sequentially in the low-temperature, medium-temperature, and high-temperature ranges, forming continuous flame-retardant protection across the entire temperature range.

This invention discloses a high-fire-resistant concrete, characterized by being composed of the following components in parts by weight: 20-25 parts cement, 30-35 parts crushed stone, 10-25 parts river sand, 10-12 parts volcanic ash, 10-20 parts water, 1-3 parts epoxy-propionic acid modified octa-tetramethylcyclotetrasilazane, 0.3-0.6 parts guanidine carbonate, 1-3 parts calcium borate, 0.5-1 part waste polyarylene diazole fiber, and 0.1-0.3 parts 3-chloro-2-hydroxypropanesulfonic acid modified 2,5-bis(diethylamino)phenyl-1,3,4-diazole. This invention also discloses a method for preparing the aforementioned high-fire-resistant concrete. The high-fire-resistant concrete disclosed in this invention exhibits high fire resistance, good workability, excellent comprehensive performance, impermeability and crack resistance, durability, and high compressive strength.

This invention belongs to the field of building materials technology. Specifically, it discloses a glaze for preventing ceramic tile deformation and an anti-deformation ceramic tile, comprising the following raw materials in parts by weight: 15-30 parts spodumene, 15-30 parts calcite, 12-20 parts bauxite, 8-15 parts pyrophyllite, 6-12 parts modified magnesium borate whiskers, 5-9 parts wet-process mica powder, 3-6 parts palygorskite, 1-2.5 parts calcium borate, 1-2 parts tricalcium silicate, and 0.2-0.7 parts ammonium fluoride. The system of this invention uses spodumene, calcite, bauxite, and pyrophyllite as the matrix minerals, effectively lowering the sintering temperature and providing basic strength to the system. At a lower firing temperature, a high degree of sintering of the glaze layer can be ensured, preventing sintering failure of other materials. By adding modified magnesium borate whiskers and wet-process mica powder, the flexural strength is effectively improved.

This invention belongs to the field of coatings and coating systems, and discloses a two-component coating: Component A comprises 5-20 parts of organosilicon-modified diol oligomer, 10-30 parts of polyester diol, 0.1-1 parts of catalyst, 5-15 parts of boron-containing flame-retardant filler, 5-10 parts of ceramic filler, and 20-60 parts of solvent; the boron flame retardant in the boron-containing flame retardant filler is one or more of zinc borate, borax, sodium borate, calcium borate, triphenyl borate, and tributyl borate; the ceramic filler is aluminum dihydrogen phosphate and silica powder; Component B comprises 50-90 parts of diisocyanate and 10-40 parts of polyisocyanate. By mixing Component A and Component B in a weight ratio of 100:5-15 and spraying multiple times onto the substrate surface according to a spray-drying process, a flexible ablation-type thermal protective coating can be obtained. This thermal protective coating can form a coating ablation product containing a borosilicate glass phase within 2 minutes under high-temperature ablation at temperatures above 1000°C. Such a flexible ablation-type thermal protective coating combines the normal flexibility and toughness of the coating with the strong mechanical properties of the coating ablation products.

The invention belongs to the technical field of positive electrode materials, and particularly relates to a composite coated ternary material and a preparation method and application thereof. The invention provides a composite coated ternary material which comprises a ternary material and a coating layer, and the coating layer comprises a nitrogen-doped carbon coating layer, a silicon coating layer and a calcium borate coating layer; the nitrogen-doped carbon coating layer coats the ternary material, and the silicon coating layer coats the nitrogen-doped carbon coating layer; and the calcium borate coating layer coats the silicon coating layer. The composite coated ternary material provided by the invention has relatively good capacity, cycle performance and rate capability, is high in electronic conductivity, and effectively inhibits interface side reaction.

The invention provides a permanent magnetic ferrite and a preparation method and application thereof. The preparation method comprises the following steps: mixing a permanent magnetic ferrite pre-sintering material, silicon dioxide and a calcium borate strontium additive for the first time to obtain the permanent magnetic ferrite. According to the invention, the calcium strontium borate additive is added, the calcium strontium borate additive contains boric acid ions, the boric acid ions have good affinity with ferrite, and the secondary addition of boric acid can significantly improve the microstructure of a magnet, so that the comprehensive performance of the permanent magnetic ferrite is improved.

The present application relates to a series of compounds calcium halogenated borate and calcium halogenated borate nonlinear optical crystal and preparation method and use, the molecular general formula of the series of compounds is Ca2B3O6X, wherein X=Cl, Br, molecular weight 244.04-288.50, the compound is synthesized using solid phase reaction method;The crystal is orthorhombic, space group Cmc 21, the cell parameter is a=15.360 (6)-15.406 (2) Å, b=22.115 (3)-22.175 (10) Å, c=7.3617 (11)-7.454 (4) Å, Z=16, V=2508.2 (6)-2538.7 (19) Å 3 , the crystal is grown using cosolvent method, the powder frequency doubling effect is about 1.5-2 times of KDP (KH2PO4), has wide light transmission waveband, the crystal preparation method is simple, and the cost is low, the prepared crystal is large in mechanical hardness, easy to cut, polishing processing and preservation, the series of calcium halogenated borate nonlinear optical crystal described in the application has the advantages of stable physical and chemical properties, moderate mechanical hardness, not easy to break, easy to cut, polishing processing and preservation and the like.

This invention proposes an environmentally friendly magnesium-aluminum spinel protective agent for high-temperature environments and its preparation method, relating to the field of high-temperature industrial kiln lining protection. The protective agent comprises the following components by mass percentage: 55-70 wt% magnesium-aluminum spinel powder, 8-15 wt% activated alumina micro powder, 5-10 wt% lightly calcined magnesium oxide powder, 5-12 wt% aluminum sol binder, 1-3 wt% high-temperature wetting accelerator, 0.3-1.0 wt% polycarboxylate dispersant, 0.2-0.8 wt% organic cellulose ether thickener, and the balance being deionized water; wherein the particle size distribution of the magnesium-aluminum spinel powder satisfies D50≤10μm and D90≤25μm; the high-temperature wetting accelerator is at least one of calcium borate, sodium metasilicate, or tetrabutyl titanate; the viscosity of the protective agent slurry at 25℃ is 1800-3500 mPa·s. The protective agent can be applied directly to the surface of high-temperature substrates at 800–1350°C without cooling the substrate to medium or low temperatures, thus reducing equipment downtime to 4–6 hours.

The invention relates to the technical field of casting powder, in particular to casting powder for inhibiting stainless steel black strip defects and a preparation process thereof, and the casting powder comprises the following raw materials: wollastonite, spodumene, composite carbon black, yttrium oxide stabilized rare earth microspheres, calcium borate and calcium phosphate. The SiO2 coating layer physically isolates carbon from being in contact with molten steel in a low-temperature stage, so that early-stage carbon migration is effectively blocked; and in the high-temperature stage, the coating layer reacts with CaO to gradually release carbon black, the slag forming rhythm is matched, the melting speed fluctuation is reduced, and the situation that a casting blank makes contact with a carbon-rich layer due to insufficient supplementing of a liquid slag layer is avoided, so that the color difference / peeling-off-shaped black belt defect caused by carbide precipitation and grain boundary corrosion in subsequent rolling is reduced. The cerium / lanthanum active component is wrapped by the yttrium oxide shell, the synchronous effect of high-temperature slow-release deoxidation and sulfur fixation is achieved, Al2O3 and MnS inclusions are effectively reduced, and therefore the inclusion enrichment type black belt defect is reduced.

The invention discloses a lanthanum ion doped oxygen calcium yttrium borate nonlinear optical crystal material and a preparation method thereof, the lanthanum ion doped oxygen calcium yttrium borate nonlinear optical crystal material belongs to a monoclinic system, the space group is Cm, the chemical formula is La0.1: Y0. 9Ca4O (BO3) 3, the frequency multiplication coefficient is 2 * KDP, the ultraviolet cut-off edge is less than 200 nm, and no absorption peak with the intensity greater than or equal to 0.2 cm <-1 > exists in the range of 200-2500 nm. Therefore, the lanthanum ion doped yttrium calcium oxide borate crystal can be used as a nonlinear optical material with a wide application prospect in the field of optical parameter chirped pulse amplification.

The invention relates to a high-strength, high-toughness and low-cost recycled PBT / PET alloy material and a preparation method thereof. The high-strength, high-toughness and low-cost recycled PBT / PET alloy material is prepared from the following components in parts by weight: 100 parts of a PBT injection molding secondary material; 30 to 60 parts of recycled PET bottle body broken material; 2-5 parts of calcium borate; 5 to 10 parts of terephthalic acid (PTA); 0.1 to 0.2 part of antimony trioxide; 0.5 to 1 part of a coupling agent; 10 to 20 parts of ethylene glycol; 7 to 10 parts of a toughening agent; 2 to 5 parts of carbon nano tube; 3-5 parts of a chain extender; 0.5 part of an antioxidant; and 1 part of a lubricant. The recycled PBT / PET alloy material overcomes the defects in the prior art, solves the problem that the performance of a PBT recycled material is greatly reduced, and has the advantages of high strength, high toughness, low cost and the like.

This invention discloses a laser frequency conversion system and method based on thermal lensing effect enhancement, belonging to the field of laser technology. The system includes a first pump source, a nonlinear frequency conversion crystal, and a second pump source. The crystal is a rare-earth-doped calcium borate crystal, which absorbs the first pump light to generate a controllable thermal lensing effect. The fundamental wave light emitted from the second pump source is coaxially incident on the crystal with the first pump light. The thermal lens focuses the fundamental wave light, significantly increasing its power density within the crystal. The crystal then utilizes a nonlinear optical effect to efficiently convert the high-power-density fundamental wave light into harmonic light output. This invention solves the problem of low efficiency in traditional extracavity frequency doubling. Through an active focusing mechanism, high-efficiency and high-stability visible light laser output can be achieved with only a lower fundamental wave power, making it particularly suitable for biological detection and medical aesthetics.

The invention belongs to the technical field of lasers, and particularly relates to a gain medium, an annular cavity laser and application thereof. The gain medium is an ytterbium ion-doped calcium oxyborate crystal, the molecular formula is Yb: YCa4O (BO3) 3, and the doping concentration of ytterbium ions is 0.1%-10%. The ring cavity laser comprises a gain medium, an isolator, a pumping coupling lens and a frequency doubling crystal. According to the ring cavity laser and the distributed gain, the laser ring cavity and the one-way isolator are selectively arranged in one ring laser, yellow light single-frequency laser output is achieved, pump light can be evenly absorbed, the thermal saturation effect of a single crystal is avoided, and the energy extraction efficiency is remarkably improved. Moreover, power superposition can be realized, power amplification is realized through series connection of multiple gain media, additional polarization elements are not needed, and intra-cavity loss is reduced; and the light intensity distribution in the annular cavity is more uniform, and the frequency doubling crystal is matched, so that the conversion efficiency can be improved, and the device is particularly suitable for high-power and high-polarization-purity laser systems.

To provide a boron nitride powder capable of yielding a resin molded article excellent in thermal conductivity.SOLUTION: One aspect of the present disclosure provides a boron nitride powder comprising agglomerated particles formed by aggregation of a plurality of primary particles of hexagonal boron nitride, and primary particles of hexagonal boron nitride. In one example, in the boron nitride powder, the agglomerated particles contain calcium borate, and, if the average particle diameter in a volume-based particle size distribution A measured by a laser diffraction / scattering method after dispersion treatment is defined as D50(A), and the average particle diameter in a volume-based particle size distribution B measured by the laser diffraction / scattering method without dispersion treatment is defined as D50(B), then D50(A) is greater than 15 μm, and the ratio of D50(B) to D50(A) is 1.5 or more.SELECTED DRAWING: None

To provide a boron nitride powder capable of yielding a resin molded article excellent in thermal conductivity.SOLUTION: One aspect of the present disclosure provides a boron nitride powder comprising agglomerated particles formed by aggregation of a plurality of primary particles of hexagonal boron nitride, and primary particles of hexagonal boron nitride. In one example, in the boron nitride powder, the agglomerated particles contain calcium borate, and, if the average particle diameter in a volume-based particle size distribution A measured by a laser diffraction / scattering method after dispersion treatment is defined as D50(A), and the average particle diameter in a volume-based particle size distribution B measured by the laser diffraction / scattering method without dispersion treatment is defined as D50(B), then D50(A) is greater than 15 μm, and the ratio of D50(B) to D50(A) is 1.5 or more.SELECTED DRAWING: None

This application relates to the field of ceramic materials technology, and discloses a heat-resistant ceramic glaze with high thermal shock resistance and low expansion, and its preparation method. The glaze comprises 70.0–80.0 parts of base powder, 20.0–30.0 parts of β-spodumene clinker, 50.0–60.0 parts of added water, 0.2–0.4 parts of sodium polyacrylate, 0.1–0.3 parts of sodium carboxymethyl cellulose, and 0.05–0.15 parts of calcium acetate. The base powder contains inorganic raw materials such as calcium borate. Within the system, a three-dimensional yield network structure is formed by the cross-linking of the molecular chains of sodium carboxymethyl cellulose and calcium ions ionized from calcium acetate. During preparation, the base powder and β-spodumene clinker are sequentially fed into a ball mill for grinding, and a cross-linking agent is added before stopping the mill. This invention utilizes the three-dimensional yield network structure to stably suspend large-particle-size β-spodumene clinker. When the ceramic product experiences drastic temperature changes, the low-expansion crystal remnants retained internally buffer thermal stress concentration, thereby effectively preventing glaze surface cracking.

A lubricating oil composition for an internal combustion engine includes: (A) a lubricating base oil including at least one mineral oil-based base oil and having a kinematic viscosity at 100° C. of from 2.0 mm2 / s or more and 4.3 mm2 / s or less, and (B) a calcium borate-containing metallic detergent in an mount of 500 mass ppm or more and less than 1500 mass ppm in terms of calcium, based on a total amount of the composition. The composition has an evaporation loss by NOACK method (250° C., 1 h) of from 10 mass % or more and 40 mass % or less, and the composition has a viscosity index of from 140 or more and 350 or less. The lubricating oil composition is provided, wherein even in the case of using a highly evaporative base oil to make the viscosity low, the friction characteristic of the lubricating oil composition can be kept low.

This invention provides a manufacturing process and portable assembly / disassembly device for a high-capture-efficiency fiberglass filter, comprising the following steps: S1: Precisely controlling the composition of the raw materials for manufacturing the fiberglass filter, and then calcining it in a crucible to form a molten fiberglass material; S2: Cooling the molten fiberglass material in S1 and then performing centrifugal spinning, while precisely controlling the temperature and humidity during the spinning process. Compared with the prior art, this invention has the following beneficial effects: The manufacturing process of the high-capture-efficiency fiberglass filter begins with the precise proportioning of raw materials. High-purity quartz sand, calcined aluminum carbide, and calcium borate are mixed according to a formula of 52±0.5% silicon dioxide and 15±0.5% alumina. After hot pressing and shaping, the edges are sealed with two-component polyurethane slit coating. The curing process is monitored by infrared thermal imaging. The finished product is cured in an FFU+HEPA clean environment, and the filtration efficiency, air permeability, and other indicators are monitored by SPC control chart. Waste fibers are crushed, air-separated, and then incinerated at high temperature for recycling, and are recycled by re-mixing raw materials at a ratio of 1:8.

The invention discloses a method for preparing calcium perborate by using a mesoporous material through a one-step dry method, and belongs to the field of inorganic chemical synthesis, the method for preparing the calcium perborate by using the mesoporous material through the one-step dry method comprises the following preparation steps: S1, mixing calcium hydroxide and silicon carbide, then carrying out microwave treatment, and obtaining a mesoporous calcium hydroxide / calcium oxide complex after the treatment is finished; s2, slowly and synchronously adding the mesoporous calcium hydroxide / calcium oxide complex obtained in the step S1, hydrogen peroxide and boric acid into a reaction bottle, stirring for reaction, and adding calcium peroxide for multiple times before reaction and in the reaction process; after the reaction is finished, collecting solids and drying to obtain a target product. Calcium perborate is prepared by a one-step method instead of a traditional two-step method, and calcium hydroxide is pretreated into a mesoporous material, so that a high-active oxygen product can be smoothly synthesized by a one-step solid-phase reaction.

The application discloses a preparation method of a three-dimensional phase-separated decorative glaze for coal gangue ceramic bodies, which comprises a base glaze and a surface glaze, and the surface glaze is prepared from the following raw materials in a percentage by weight: 15-20% of quartz, 10-15% of calcite, 5-10% of kaolin, 5-10% of zinc oxide, 10-15% of calcium phosphate, 25-30% of potassium feldspar, 2-5% of calcium borate, 5-10% of tin dioxide, 3-5% of spodumene and 2-5% of coloring oxide; and the base glaze is prepared from the following raw materials in a percentage by weight: 15-20% of quartz, 10-15% of wollastonite, 5-10% of kaolin, 10-15% of zinc oxide, 15-20% of calcium phosphate, 15-20% of spodumene, 5-10% of titanium dioxide, 5-10% of calcium borate, 2-5% of coal gangue and 2-5% of coloring oxide; and the product is obtained through raw material preparation, glazing and sintering. The three-dimensional phase-separated decorative glaze has a simple process, strong adaptability, unique effect and wide market prospect.

The present application relates to the technical field of inorganic glass polishing powder preparation, in particular to a long-acting anti-abrasion glass polishing powder and a preparation method thereof. The present application overcomes the problems of traditional cerium-based polishing powder, such as easy settlement and pipeline blockage during processing, and lack of long-acting anti-abrasion protection after polishing. By in-situ combination and addition of sodium lignosulfonate and double-end epoxy polyethylene glycol in the precursor liquid, cross-linking reaction is carried out, and particle settlement is inhibited by steric hindrance and electrostatic repulsion. In addition, calcium metaborate or barium metaborate is added as a boron-containing fluxing component during pyrolysis and multiphase eutectic calcination, which locks the lamellar wear-reducing component in the inorganic skeleton, and integrates the cutting phase and the lubricating phase. Finally, the continuity of the processing flow is improved, and under the shear force, the glass surface migrates to form a film to play a dynamic lubrication role, effectively reducing the scratch width and inhibiting the rise of haze after long-term sand particle erosion.

The present application relates to the field of flame retardant preparation, in particular to a cellulose composite waterproof flame retardant and a preparation method thereof, which solves the problem of poor flame-retardant effect of the existing waterproof flame retardant with low content, and the problem of the destruction of the cellulose fiber interlaced network of paper by the capsule wall material in the high content waterproof flame retardant, resulting in the mechanical strength of paper being reduced, and comprises the preparation of modified calcium borate, ultrasonic modification of nano calcium borate in anhydrous ethanol, surface grafting of the calcium borate, obtaining pre-grafted calcium borate, placing the pre-grafted calcium borate and acrylamide monomers in an aqueous solution of ethanol, adding AIBN reagent for reaction, obtaining a calcium borate grafted compound, and then compounding carbon nanotubes, the calcium borate grafted compound and silanized ammonium polyphosphate microcapsules to obtain the flame retardant. The present application can realize high content addition, and the paper has high tensile strength and flame-retardant performance at the same time.

The invention belongs to the technical field of mechanoluminescent materials, and particularly discloses a phase-regulated calcium borate-based multicolor mechanoluminescent material as well as a preparation method and application thereof, the phase-regulated calcium borate-based multicolor mechanoluminescent material is manganese-doped calcium borate, and the molar ratio x of boric acid to calcium oxide is 1.00-2.00. The mechanoluminescent material is prepared from the following raw materials in mole fraction: 49.75 percent to 66.33 percent of H3BO3, 33.17 percent to 49.75 percent of CaO and 0.5 percent of MnCO3. The calcium borate-based mechanoluminescent material is prepared by taking boric acid and calcium oxide as raw materials and Mn as an activating agent, the preparation method of the mechanoluminescent material adopts a high-temperature solid-phase method, the preparation process is simple, the sintering temperature is low, the mechanoluminescent material can be sintered in air, and conditions are easy to control; no toxic gas is generated in the preparation process, and no pollution is caused to the environment; the simple, convenient, low-temperature and protective atmosphere-free synthesis of the ML material based on calcium borate is realized in a phase regulation mode.

The invention relates to marble-imitated reengraved glaze, a preparation method thereof and application of the marble-imitated reengraved glaze in preparation of marble-imitated ceramic tiles. The reengraved glaze comprises dry particles, glaze slip and a suspending agent in a mass ratio of (0.2-0.6): (0.5-0.8): 1, the glaze slip comprises a dry powder glaze material and water in a mass ratio of 100: (40-50), and the dry powder glaze material comprises 15-20 parts of albite, 15-20 parts of potassium feldspar, 20-25 parts of a modified kaolin-aluminum borate whisker compound, 5-8 parts of dolomite, 5-10 parts of calcium borate, 5-10 parts of strontium carbonate and 5-10 parts of barium carbonate. According to the marble-imitated recarving glaze disclosed by the invention, through the synergistic effect of multiple components, the wear resistance of a glaze surface is remarkably improved, and a high-performance ceramic tile with a marble-imitated effect is finally obtained.