38results about How to "High volume resistance" patented technology

A sputtering target which is composed of a sintered body of an oxide containing indium, tin and zinc as main components; the atomic ratio of In / (In+Sn+Zn) being 0.10 to 0.35; the atomic ratio of Sn / (In+Sn+Zn) being 0.15 to 0.35; and the atomic ratio of Zn / (In+Sn+Zn) being 0.50 to 0.70; and containing a hexagonal layered compound shown by In2O3(ZnO)m, wherein m is an integer of 3 to 9, and a spinel structure compound shown by Zn2SnO4.

A connector terminal which can achieve high mechanical connection strength and stabilized low electrical connection resistance when it is crimped to an aluminum electric wire, and in addition, can suppress electrical contact resistance low when it is fitted to a mating connector terminal is provided. In a connector terminal (1A) having an electrical contact section (10) which is brought into contact and conducted with a mating connector terminal by fitting to the mating connector terminal, and a conductor crimping section (12) which is crimped to the conductor of an electric wire, a metal material which constitutes the terminal uses aluminum or an aluminum alloy as a base material (100), a Zn layer (101) having a thickness in the range from 0.1 μm to 2.0 μm by electroless plating and a Cu layer (102) having a thickness in the range from 0.5 μm to 1.0 μm by electrolytic plating are formed in sequence on the surface of the base material (100), and an Sn layer (105) having a thickness in the range from 0.7 μm to 1.7 μm by electrolytic plating is formed on the outermost surface.

The invention discloses a DC toughened glass insulator, which comprises an iron cap (2), a glass piece (8), a steel pin (4) and adhesive (4), wherein the glass piece (8) is provided with an outer umbrella skirt (11), a first inner umbrella skirt (10) and a second inner umbrella skirt (9), the glass piece (8) comprises the following main chemical compositions in percentage by weight: more than or equal to 18 percent of sodium oxide, more than or equal to 13.67 percent of potassium oxide, more than or equal to 6.1 percent of magnesium oxide, more than or equal to 2.06 percent of barium oxide, more than or equal to 2 percent of aluminum trioxide and rest silicon dioxide. The height ratio between the outer umbrella skirt (11) and the first inner umbrella skirt (10) and between the second inner umbrella skirt (9) and the outer umbrella skirt is less than or equal to 0.6, or the height ratio between the first inner umbrella skirt (10) and the outer umbrella skirt and between the first innerumbrella skirt (10) and the second inner umbrella skirt (9) is more than or equal to 1.5. The DC toughened glass insulator can effectively prevent the ionic migration in the glass piece, reduces the concentration of main charge carriers in the glass piece, hinders the displacement of ions which are easy to migrate in an irregular network inside the glass piece, reduces the migration charge quantity in the glass piece, improves the volume resistance of the toughened glass insulator, reduces the aging speed of the toughened glass insulator, and improves the flashover voltage and the breakdown voltage of the toughened glass insulator under the serious contamination.

The invention relates to a vulcanized fiber board which is prepared from 94%-97% by weight of cotton fiber and 3%-6% by weight of glass fiber. The manufacturing process comprises the following steps: (1) beating and rinsing; (2) homogenating and papermaking; (3) colloidizing and aging; (4) desalting and washing; (5) pre-drying and drying; and (6) calendering and packaging. In comparison with the traditional vulcanized fiber board, the volume resistance of the vulcanized fiber board disclosed by the invention is increased by 50%, the electrical strength is increased by 21%, and the longitudinal and the transverse drying shrinkage rates are respectively reduced by 10% and 19.6%.

The invention discloses a high-strength aramid-paper sandwich composite structure. The high-strength aramid-paper sandwich composite structure comprises a polyester thin film, aramid-paper honeycomb cores arranged at the two sides of the polyester thin film, and resin fiber layers arranged at the outer sides of the aramid-paper honeycomb cores, wherein the polyester thin film is laminated with thearamid-paper honeycomb cores by an adhesive. The high-strength aramid-paper sandwich composite structure disclosed by the invention has the characteristics of high strength and durability.

The invention discloses an antiknock enamel static power and a preparation method thereof. The method comprises the following steps: preparing the following raw materials by weight percent: 91-95% of titanium / barium-containing enamel ceramic glaze, 1-3% of enamel pigment, 4-6% of quartz powder, 0.1-0.12% of silane / siloxane concentrated oil and 0.13-0.15% of polymethyldiphenylsiloxane, wherein isocaprylic acid is 7-7.5% silane / siloxane concentrated oil; putting the titanium / barium-containing enamel ceramic glaze, enamel pigment, quartz powder, silane / siloxane concentrated oil and isocaprylic acid into a dry ball mill for grinding, till the ground powder particle D50 is 40-45um; adding polymethyldiphenylsiloxane into the mixed powder and grinding till D50 is 16-18um; putting the acquired material into a heating stirrer at 120 DEG C, stirring and fully homogenizing the organic matter on the powder surface; sieving the powder with 200-mesh sieve, thereby acquiring the product. After the antiknock enamel static power provided by the invention is coated on an enameled pressed steel with porcelain exploding trend and is sintered, the enamelware is free from fish-scaling.

Vulcanized paper raw paper is prepared from the following raw materials: by weight, 94%-97% of cotton fibers, and 3%-6% of glass fibers. A manufacturing method of the vulcanized paper raw paper comprises the following steps of beating, poaching, pulp evening, paper-making and packaging. The vulcanized paper raw paper is high in strength, good in water-absorbing capacity, low in deformability, good in evenness, and good in stiffness. Moreover, the manufacturing process is simple and easy to control, cost is low and period is short.