35results about How to "Optimize raw material content" patented technology

The invention discloses a degradable disposable plastic film, which comprises a bottom layer and a surface layer; the bottom layer includes the following raw materials in parts by weight: 45-55 parts of polyethylene terephthalate, 25-32 parts of polyethylene, 15-20 parts of maleic anhydride grafted polyethylene, 5-9 parts of lignocellulose, 6-9 parts of hemp fiber, 3.4-4.5 parts of plasticizer, 16-22 parts of filler; the surface layer includes the following parts by weight Raw materials: 22-25 parts of polyethylene terephthalate, 50-55 parts of polyethylene, 14-17 parts of maleic anhydride grafted polyethylene, 10-15 parts of fluorinated plant fiber, 8-12 parts of starch, nano 5-7 parts of titanium dioxide, 3.5-4.8 parts of plasticizer, and 12-16 parts of filler. The degradable disposable plastic film of the present invention has the advantages of fast degradation speed, high tensile strength, large elongation at break, good mechanical properties, etc., is not easy to be damaged during use, and has good user experience.

The invention discloses a method for preparing multilayer piezoelectric ceramics used in a high-temperature environment of 482°C, which mainly includes the following steps: stirring high-temperature ceramic powder, solvent, dispersant, binder and thickener with a stirrer Uniform preparation of casting slurry; forming a film of a certain thickness through a casting machine and printing the inner electrode, and printing the outer electrode after isostatic lamination; debinding at a low heating rate and sintering ceramics at low temperature; ceramic polarization and high temperature Aging stabilizes the piezoelectric properties. The multilayer piezoelectric ceramics prepared by the method for preparing multilayer piezoelectric ceramics used in a high-temperature environment of 482°C according to the present invention can meet the use requirements of a high-temperature environment, and have good piezoelectric performance, and can be completely used in a high-temperature environment of 482°C , The piezoelectric performance is stable after a long time of heat preservation at a high temperature of 482 ° C; the performance is stable after aging at a high temperature of 550 ° C, meeting the requirements of high temperature environments.

The invention discloses a diamond saw blade and a preparation method thereof. The cutter head includes a first cutting area and a second cutting area; the first cutting area includes the following raw materials in parts by weight: 8-14 parts of polycrystalline diamond particles, iron powder 48-55 parts, copper powder 25-32 parts, zinc powder 4-6 parts, tin powder 2-3 parts, nickel powder 1.5-2.5 parts, cobalt powder 2-3 parts, manganese powder 1.5-2 parts, tungsten carbide and 2.5-5 parts of titanium carbide mixture powder, 0.4-0.7 part of lanthanum nickel five powder; the second cutting zone includes the following raw materials by weight: 10-16 parts of polycrystalline diamond and boron carbide mixture particles, 45-50 parts of iron powder, copper 27-33 parts of powder, 4-6 parts of zinc powder, 2-3 parts of tin powder, 1.5-2.5 parts of nickel powder, 2-3 parts of cobalt powder, 1.5-2 parts of manganese powder, 2.5-4 parts of titanium carbide powder, lanthanum 0.4 to 0.7 parts of nickel five powder. The diamond saw blade of the invention has excellent comprehensive performance.

The invention discloses a warm-keeping and antibacterial school uniform fabric and a preparation method thereof. The warm-keeping and antibacterial school uniform fabric is prepared from a warm-keeping and antibacterial composite fiber through a knitting or weaving process; the warm-keeping and antibacterial composite fiber includes an inner layer and an outer layer. layer; the outer layer is coated on the outer surface of the inner layer, and the cross-sectional profile of the outer layer is circular; the ratio of the cross-sectional area of ​​the inner layer to the outer layer is 1:1.35 to 1.55; the The inner layer is made of the following raw materials in parts by weight: polyhexamethylene adipamide: 88-98 parts, polyurethane elastomer: 5-9 parts. The special warm-keeping and antibacterial composite fiber adopted in the warm-keeping and antibacterial school uniform fabric of the present invention has an inner layer and an outer layer structure, has a high antibacterial rate, and has a good antibacterial effect. Good performance, good resilience, soft hand feeling, comfortable to wear; good moisture absorption and perspiration performance, high tensile strength, good mechanical properties; suitable as school uniform fabric.

The invention discloses a graphene lead-carbon battery positive electrode grid and a preparation method thereof. The graphene lead-carbon battery positive electrode grid includes a lead grid blank and graphene lead paste covering the surface of the lead grid blank; The graphene lead paste is made of raw materials including the following parts by weight: 750-820 parts of sponge lead, 10-14 parts of barium sulfate, 1.4-1.8 parts of graphene, 0.75-0.85 parts of polyacrylonitrile-based carbon fiber, carboxylated carbon 0.9-1.2 parts of nanotubes, 60-90 parts of water-based polyurethane, 0.7-0.9 parts of isocyanate, 80-95 parts of dodecyl alcohol, 40-50 parts of isoprene glycol, and 0.2-0.3 parts of polyoxyethylene lauryl ether. The positive electrode grid of the graphene lead-carbon battery of the present invention has strong charging acceptance ability and long service life, and is superior to the positive electrode grid of the common lead-carbon battery and obviously superior to the positive plate of the common lead-acid storage battery.