741results about How to "Improve physical strength" patented technology

The invention relates to a single-distributive micron short fiber-typed vaterite calcium carbonate and its preparing method. The calcium carbonate crystal is needle short fiber-typed, its length is 2-8 micron and width is 0.3-1.5 micron, the ratio of length and diameter is 5-10, its content of vaterite calcium carbonate is larger than 90% with small particle on the surface of. The preparing method includes mix the aqueous solution of carbonate containing water soluble organic solvent with aqueous solution of calcium salt also containing that, make use of the different dissolubility of carbonate and calcium salt in water soluble organic solvent and water, and the different solvation to calcium ion, compound the product. The calcium carbonate has remarkable single distribution, large ratio of length and diameter, high activity of surface, suitable for coating on paper, filling plastic, coating, printing ink and paper, as well as the raw material for calcium preparations.

A flexible seal for use in a solid oxide fuel cell stack is formed from a ceramic fibre matrix impregnated with a plurality of metallic or semi-metallic particles which are then converted to a corresponding ceramic particle, such as by oxidation. The seal may be formed by dipping the fibre matrix into a slurry, suspension or sol-gel of the particles in an alcohol, and then firing the seal to oxidize the metal particles. The seal may also be formed by tape casting a slurry formed from metallic or semi-metallic particles, ceramic fibres and/or ceramic particles.

The invention provides bamboo-charcoal-shaped porous ceramsite coated by zero-valent iron as well as a preparation method and application of the bamboo-charcoal-shaped porous ceramsite. The preparation method of the bamboo-charcoal-shaped porous ceramsite coated by zero-valent iron comprises the following steps: taking alpha-Al2O3 powder as ceramsite primary aggregate, clay and bentonite as auxiliary aggregates and surface-activated bamboo bits as bamboo charcoal preparation materials to combine with a pore forming agent to prepare pores without adding a sintering aid or a binder; adopting graded sintering at 400-600 DEG C to obtain bamboo-charcoal-shaped porous ceramsite by once molding; then, preparing the product bamboo-charcoal-shaped porous ceramsite coated by zero-valent iron by virtue of a reducing coating process of the coating material, wherein the product bamboo-charcoal-shaped porous ceramsite is a deep dark small ball with a grain size of 2-10 mm, internally a porous honeycomb spherical structure with a surface pore size of 15-25 mu m, has water absorption of 20-35% and a specific surface area of 40-60m<2>/g. The preparation method disclosed by the invention is environmentally friendly simple and energy-saving in preparation process, various in treated pollutants, and suitable for treating non-biodegradable wastewater such as flue gas wastewater, heavy metal wastewater, phenol-containing wastewater, emulsified oil wastewater, note printing and printing and dyeing wastewater, and raw material are easily available.

The invention discloses a preparation method of a high-strength and antioxidant rare-earth-based smoke denitration catalyst. The preparation method of the high-strength and antioxidant rare-earth-based smoke denitration catalyst comprises the following steps: by taking titanium dioxide and montmorillonite as carriers and ammonium metatungstate, cerous nitrate and lanthanum nitrate as active components, mixing, ageing, kneading, forming, drying and roasting with the accompanying of auxiliary materials. The auxiliary materials comprise ammonia water, lactic acid, citric acid, stearic acid, glass fiber, wood pulp, hydroxypropyl methyl cellulose, polyoxyethylene, monoethanolamine and water. The product prepared by the method is separated under a high SO2 smoke condition, nitric oxide in the smoke can be decomposed; meanwhile, the purpose of removing mercury and dioxin can be achieved. According to the preparation method of the high-strength and antioxidant rare-earth-based smoke denitration catalyst, the rare earth elements, namely cerium and lanthanum are used as the active components, so that the addition amount of vanadium is reduced, the toxicity of the product is reduced or the product is non-toxic product, the pressure of the post treatment of the product is reduced; the environmental protection pressure is reduced; the product is environmentally friendly; the product can be widely used in the field of thermal power plants, glass factories and chemical plants.

The biologically pulping process includes the following steps: pre-treating cotton fiber material with polyxylose enzyme to obtain pulp material; and normal pressure and low temperature steaming and rinsing of the pre-treated pulp material with alkali and H2O2. The said pulping process has low cost of eliminating impurity from the material, lowered bleaching chemical liquid consumption and raised paper pulp quality.

The invention discloses a preparation method for a macromolecule emulsifier used in ASA. The invention solves the problem that cationic starch and a micromolecule emulsifier added in the traditional ASA latex have poor gluing effect, and the prepared latex easily forms bubbles and has poor stability. The method chooses appropriate oil-soluble vinyl monomers, water-soluble vinyl monomers and cation monomers under the action of a macromolecule stabilizing colloid; the macromolecule emulsifier used in ASA is prepared under the action of an evocating agent by seed emulsion polymerization. On one hand, the macromolecule emulsifier can overcome the shortcoming that the cationic starch easily goes bad at high temperature and in the process of the long term storage to cause that the ASA latex has poor gluing effect and poor stability; on the other hand, the reserving performance and the anti-anion trash interference performance of the macromolecule emulsifier are greatly increased; the macromolecule emulsifier not only can increase water resistance of paper but also can increase the physical strength of paper; in addition, when the macromolecule emulsifier is used for ASA emulsification, additional pasting, dilution and high shear emulsifying plants are not needed.

The invention is a regenerated corrugated raw paper manufacturing method, its main technical flows: mix import waste paper with internal waste paper, pulp by pulping engine, desand by high concentration desander, screen by fiber separator, desand by high concentration desander, screen by low concentration pressure sieve, desand by low concentration desander, condense by condenser, mill and pulp by medium concentration hydraulic disc, screen by pressure sieve, make by paper machine and spray papermaking chemical assistant when molding and cut by winder. The added quantity of import waste paper is 40-55% of total weight of the mixed waste paper. It changes traditional low concentration pulping technique. The technique is designed reasonably, and can effectively heighten the physical strength of the regenerated corrugated raw paper, reduce the raw material cost and be applied to medium-scale production.

A method of producing a polyurethane foam sheet, and a laminated sheet that uses such a foam sheet, that can be applied to artificial leather, synthetic leather, and cushioning materials used in all manner of applications. A polyurethane foam sheet is produced by applying a liquid mixture, obtained by mixing together a heated and melted hot melt urethane prepolymer (A) containing isocyanate groups at molecular terminals, and a compound (B) containing at least 2 active hydrogen atom-containing groups, onto a substrate in a sheet-like manner, and then water foaming the liquid mixture by bringing the sheet-like liquid mixture into contact with water vapor or moisture (water). A laminated sheet is produced by bonding a third substrate to the polyurethane foam sheet.

The invention relates to a light emitting diode (LED) encapsulation adhesive composition, which comprises the following components of polysiloxane A, polysiloxane B, a curing accelerator C and a solidification inhibitor D, wherein each molecule of the polysiloxane A comprises at least one alkylene and one aromatic group which are connected with silicon, each molecule of the polysiloxane B comprises at least two hydrogen atoms and aromatic groups, the at least two hydrogen atoms and aromatic groups are connected with the silicon, the composition comprises, by weight, 30-70 parts of the polysiloxane A, 30-70 parts of the polysiloxane B, 0.001-0.003 part of the curing accelerator C and 0.001-0.003 part of the solidification inhibitor D, and the molar mass of the aromatic groups which are connected with the silicon in the polysiloxane A and the polysiloxane B are over 40% of that of total groups. The LED encapsulation adhesive composition has the advantages of being high in index of refraction, transmittance and physical strength, anti-yellowing, anti-ultraviolet and heat aging resistant.

The invention relates to light offset paper filled with synthetic calcium silicate and a manufacturing method thereof. The manufacturing method of the light offset paper includes the process of taking chemical softwood pulp and poplar PRC-APMP pulp as paper pulp raw materials, taking synthetic calcium silicate as filling material and then manufacturing the light offset paper with pulp. The produced light offset paper provided by the invention has high bulk, high opacity, no luster on the surface, excellent finishing and simple manufacturing technique, and filling material can be effectively added; and meanwhile, the calcium silicate filling material used in the invention comes from waste material of power plants, so that the manufacturing cost is reduced, and an output way with high added value is provided for the plenty of discharged fly ash in power plants.

The invention discloses a polyether urethane shoe sole raw liquorbasic solution. The polyether urethane shoe sole basic solutionraw liquor comprises a component A and a component B, wherein the raw material formula of the component A comprises polyether polyol, polymer polyol (POP), a chain extender, a strength improvement additive, a dispersing aid, a catalyst, a foaming agent and a foam stabilizer. The polyether urethane shoe sole basic solutionraw liquor is characterized in that the component B is an isocyanate prepolymer which is prepared by the reaction of isocyanate, polyether polyol and poly dimer acid glycol diethylene glycol ester polyhydric alcohol. The polyether urethane shoe sole basic solutionraw liquor provided by the invention has the advantages that the dimer acid type polyether polyol with a long molecular chain and excellent hydrolysis resistance is introduced to the component B, so that the hydrolysis resistance of the polyurethane product is not affected on the basis of improving the mechanical property of the polyurethane product; and organic modified silicon dioxide having relatively good compatibility with macromolecules and nanoscale calcium carbonate are adopted, so that the physical and mechanical property of the polyurethane product is improved.

A system, apparatus and method for illuminating a headphone to indicate the volume and/or rhythm of an audio signal emitting from the headphone through a flashing illuminated pattern of light emitting diodes visible to an observer. The pattern and synchronization of the illumination pattern provides an instantaneous, graphical indication of the volume, rhythm, intensity, and frequency of the audio signal. The invention includes a headphone. A plurality of light emitting diodes (LEDs) operably attach to the headphone(s). The LEDs form a pattern in, or on, the headphone(s) that is efficacious for prominently displaying the illumination. Various pattern shapes can be utilized. The illumination produced by the LEDs is efficacious for signaling the different variances of the audio signal. A USB cable may provides power and data signals for the headphone(s). A battery may provide power. A heat sink helps dissipate heat from the LEDs.

This invention relates to a modifying method with enzyme method to sulfate wood pulp, in which, enzyme is added into the sulfate wood pulp before beating, the proportion of enzyme and the pulp is 20-1000g/t, the density is 3-15%, temperature: 20-60deg.C, time: 0.5-4h, pH: 5.0-8.5.