5results about How to "Small fineness" patented technology

This application discloses an additive for lithium-ion batteries and its application. The additive has the following raw material composition by weight: 40-70 parts first solvent; 1-10 parts first polymer; 5-15 parts second polymer; 10-20 parts small molecule organic amine; and 10-20 parts stabilizer. The first polymer contains at least one nitrogen-free polar functional group; the second polymer contains at least one nitrogen-containing polar functional group; and the stabilizer is a hydrazine compound. The additive provided in this application, when used in lithium-ion batteries, can solve the problems of thick electrodes easily cracking and the difficulty in dispersing positive electrode particles.

According to the present invention, a carbon fiber composite material, which has excellent energy absorption and is composed of a carbon fiber having high strength and high elongation, is provided by a production method yielding an excellent production amount. This carbon fiber bundle having a plurality of single fibers has a strand elastic modulus of 260-350 GPa, a strength of 6.5-8.5 GPa, an elongation of at least 1.8%, a filament number of 1,000-9,000, and a total fineness of 0.15-0.35 g / m, wherein the average value of major axis / minor axis ratios in single fiber cross sections is 1.01-1.08, the coefficient of variation is 1-4%, and the skewness is 0.3-1.2.

The utility model is suitable for sliding agent processing technical field provides a kind of solid lubricant smashing device of smashing fully, including mounting bracket, pre-smashing component and smashing component being installed on mounting bracket and scraping component and material blocking component being installed on smashing component, the smashing component includes the smashing cylinder being inclinedly arranged along horizontal plane, the third smashing shaft being rotatably arranged in smashing cylinder and the smashing cutter being arranged around third smashing shaft, the scraping component includes multiple installation rods being equidistantly arranged along the axial direction of third smashing shaft, every installation rod is connected with scraping plate, and the scraping plate is attached to the inner wall of smashing cylinder.This device solves the problem that solid lubricant accumulates at the bottom of the smashing barrel, the cutter has difficulty in fully contacting the solid lubricant, leading to insufficient crushing and uneven particle size. It achieves the effect of using a multi-stage crushing method, pre-smashing the solid lubricant first, then further crushing and sieving, to ensure uniform particle size of the finished product.

The application relates to a degradable polyester fiber layered sound-absorbing board and a preparation method thereof, and belongs to the technical field of sound-absorbing boards; a photosensitive chain extender is prepared, the photosensitive chain extender can participate in ester exchange reaction of polyester fiber synthesis to modify the polyester fiber, and the melt strength of the polyester fiber after melting is improved. The probability of dripping or even breaking of the polyester fiber melt in the spinning process is reduced, and the stretching resonance problem of the polyester fiber melt due to external tension fluctuation in the stretching process is avoided. The modified polyester fiber can be spun into fiber with lower fineness and more uniform thickness, and the sound-absorbing board prepared by using the modified polyester fiber can increase the specific surface area and flow resistance of the board, so that the sound-absorbing efficiency of the sound-absorbing board is improved.

The application discloses a novel early-strength water agent for sprayed concrete and a preparation method thereof, and belongs to the technical field of concrete synergist of building materials, and comprises the following raw materials in mass fractions: 6-9 parts of attapulgite, 0.6-1.8 parts of mineral powder, 0.3-0.9 parts of silicon powder, 0.1-0.3 parts of fly ash, 0.5-0.9 parts of sodium silicate, 0.1-0.3 parts of acrylic acid substance, 1-2 parts of water-based ethylene bis-stearamide emulsion, 3-5 parts of heavy calcium stone powder and 4-6 parts of water. The novel early-strength water agent for sprayed concrete and the preparation method thereof can effectively reduce the rebound rate of sprayed concrete in tunnel construction and have better strength than conventional products, and have a good engineering application foundation; meanwhile, the early-strength water agent has a low mixing amount, can save engineering cost, can reduce environmental pollution and has remarkable social and economic benefits.