57results about How to "High particle content" patented technology

(EN) The invention concerns a method for producing a thermoplastic molding material or element, said material or element containing nanometric inorganic particles. In molten state, the thermoplastic is mixed with the nanometric inorganic particles and with a solubilizing agent in a conveyor screw extruder, the pressures and temperatures being adjusted so that the plastic is in melt form and the solubilizing agent in supercritical state. The invention is characterized in that at the output of the extruder, the mixture passes through a slot with a passage less than 20 $g(m)m to penetrate into an expansion zone and the molten material, wherein are incorporated the nanometric inorganic particles, is evacuated, reduced into molding material after cooling or transferred into a molding tool to be molded. The invention also concerns the molding material and the molding elements obtained by this method, as well as the uses thereof.

A floor machine comprising a motor, a body, and a dust collection system. The dust collection system comprises a skirt, which is coupled to the floor machine and forms a cavity over the body and a floor treatment pad. The skirt includes an air channel device secured to a bottom edge of the skirt. The air channel device encircles the floor treatment pad and comprises a multiplicity of slots between a floor and the skirt. Jointly, the skirt and air channel device confine particles within the cavity. A vacuum for sucking the particles from the cavity creates high velocity air flow through the air channel device. Negative pressure within the cavity prevents particles from escaping. The particles are removed from the cavity through a vacuum tube into the vacuum.

The invention discloses a reinforced cement grinding aid which comprises the following ingredients in parts by weight: 10-15 parts of diethanolisopropanolamine, 3-5 parts of triethanolamine, 4-6 parts of sodium acetate, 6-10 parts of sodium thiosulfate, 10-12 parts of sodium chloride, 4-6 parts of sodium carboxymethylcellulose and 15-18 parts of papermaking black liquid. The reinforced cement grinding aid is low in mixing amount, good in reinforcement effect and low in cost.

The invention discloses a handheld portable generating device for sliding arc low-temperature plasma. According to the structure, a miniature air pump is connected with an insulating sleeve through a silica gel conduit, the insulating sleeve is located between a high-voltage electrode and a ground electrode, a high-voltage power source supplies power to the high-voltage electrode and the ground electrode, the high-voltage power source, the high-voltage electrode and the ground electrode are embedded in a handle, a hole is formed in the front end of the handle, so that the plasma is sprayed out, and a control switch is arranged on the handle so as to control the high-voltage power source to work. The generating device has the advantages that the length and the temperature of the plasma are changed through adjustment of the voltage, operation is simple and flexible, and the device can be used conveniently by an operator; the device is small in size, convenient to carry, attractive in appearance and low in cost; air or simple substance gas or a mixture of air and simple substance gas or a gaseous compound or gaseous organic matter serves as the working gas and various requirements can be met; other excitation devices are not needed, faults are reduced, and reliability of the device is improved; the generating device is different from a traditional plasma source, a sliding arc is more efficient, the activity of generated plasma particles is better, and the particles are more beneficial to the human body and the material treatment effect.

The invention discloses a liquid cement grinding aid with low alcohol amine content. The liquid cement grinding aid is prepared from the following ingredients in parts by weight: 10-15 parts of diacetal monoisopropanolamine, 3-5 parts of triethanolamine, 4-6 parts of sodium acetate, 4-6 parts of sodium chloride, 1-2 parts of sodium lignosulfonate, 6-8 parts of hydroxyethyl cellulose and 20-25 parts of papermaking black liquor. The cement grinding aid disclosed by the invention is low in consumption, good in enhancement effect and low in cost.

The invention discloses an efficient chloride-free cement grinding aid. The efficient chloride-free cement grinding aid is prepared from the following ingredients in parts by weight: 10-12 parts of polyether, 6-8 parts of diacetal monoisopropanolamine, 3-5 parts of triethanolamine, 2-4 parts of sodium carboxymethyl cellulose, 1-2 parts of sodium lignosulfonate and 8-12 parts of papermaking black liquor. Compared with the products in the prior art, the efficient chloride-free cement grinding aid has the advantage that the 3-day compressive strength and 28-day compressive strength can be obviously improved under the condition of different dosages.

A process for preparing the composite plated layer on substrate includes putting substrate in the electrolyte of electrolyzer, and electroplating while making anode to rotate and stirring the electrolyte by air stirrer. Its apparatus is composed of electrolyzer, anode, rotating triangular anode, pump, air stirrer and filter for removing big particles.

The invention discloses an aluminum-based composite material reinforced with micro-nano composite particles distributed in grain boundaries within a grain and a preparation method thereof. Firstly, K 2 TiF 6 powder into the pure aluminum melt, supplemented by ultrasonic stirring, to prepare Al‑Al with uniform structure 3 Ti master alloy, and the resulting Al‑Al 3 Al in Ti master alloy 3 The average particle size of Ti particles is less than 5 μm; then the K 2 TiF 6 Powder and KBF 4 The powder is mixed according to the molar ratio of 1:2, and then added to the pure aluminum melt, supplemented by ultrasonic stirring treatment, and the Al-TiB with uniform structure is prepared. 2 master alloy, and the resulting Al‑TiB 2 TiB in master alloy 2 The average particle size of the particles is less than 100nm; 3 Ti master alloys and Al‑TiB 2 Master alloys as raw materials, or Al, alloying elements, Al‑Al 3 Ti master alloys and Al‑TiB 2 The master alloy is used as the raw material, and the raw material is melted, supplemented by ultrasonic stirring to disperse the reinforced particles, and the double-reinforced aluminum matrix composite material within the grain boundary is obtained after casting.

The invention discloses a novel environmentally-friendly powder grinding aid as well as a preparation method and application thereof, and belongs to the technical field of powder grinding. The grinding aid comprises the following raw materials in parts by weight: 40-50 parts of diethanol monoisopropanolamine, 30-40 parts of hexadecanol ester, 10-15 parts of calcium lignosulfonate, 5-10 parts of ethylene glycol, 4-8 parts of hydroxyethyl methylcellulose, 8-12 parts of sodium hexametaphosphate and 2-5 parts of sodium polyacrylate. The calcium lignosulfonate has good dispersibility, so that the grinding efficiency can be improved, the machine-hour output is increased, the electricity consumption is lowered, a synergistic effect of raw material components can be also promoted, and the adaptability of the grinding aid to calcium carbonate is improved. The hexadecanol ester is applied to fusion of polyol and a lignin derivative, and high-adsorption strength dispersing agents, namely the sodium hexametaphosphate and the sodium polyacrylate, are contained, so that a phenomenon of powder agglomeration can be obviously solved, gradation of calcium carbonate particles is improved and the content of micropowder particles is increased.