32results about How to "Arc resistant" patented technology

This invention relates to a silver-based rare earth alloy touch material used in low voltage switch appliance and its process method. Its chemical components are the following: rare earth metal oxide x=1~7 %; Me oxide y=1~3 %; SnO#-[2] z=(12-x-y)%; the rest is metal silver, wherein the rare earth metals are La,Ce,Pr or Nd and Me as Bi,In,Sb or T1. Its process method is as following: to use che mical co-precipitation to make powder and to shape and sinter the deposited powder.

The invention discloses a bathtub-floor integrated super multi-coating (SMC) floor, which comprises a floor main body and a bathtub which are integrally arranged, wherein a bathtub drain hole is arranged at the bottom surface of the inner side of the bathtub, the edge of the bathtub extends downwards to form the skirt of the bathtub, a repair and maintain hole and the drain hole of a wash basin are arranged on the side edge of the skirt of the bathtub, the bottom of the bathtub is connected with the floor main body which is integrally arranged with the bathtub, and a drain ditch is arranged at the connection part of the bathtub and the floor main body, a floor drain hole and a defection hole are arranged on the floor main body, a shoulder step is arranged at the edge of the floor main body, a watertight shutter is arranged on the lateral straight edge of the shoulder step, and the bottoms of the floor main body and the bathtub are pneumatically reinforced, and are provided with adjustment bolts. The bathtub-floor integrated super multi-coating floor arranges the floor, the bathtub and the skirt of the bathtub into a whole body, so the bathtub and the skirt of the bathtub are partsof the floor, no splicing seam is generated, so the water leakage problem caused by the splicing seam of the conventional integral bathroom is solved, and the floor has an attractive and elegant overall appearance, and is easy to clean; and according to the floor, the repair and maintain hole and the drain hole of the wash basin are arranged on the skirt of the bathtub, so the subsequent fault maintenance is facilitated.

The invention belongs to the technical field of adhesives, and in particular relates to a room-temperature fast-curing low-stress transparent epoxy resin adhesive, which is composed of epoxy resin A component and curing agent B component in a volume ratio of 1:1; The epoxy resin A component includes: hydrogenated bisphenol A epoxy resin, bisphenol A glycidyl ether epoxy resin, functional acrylate monomer, acrylate diluent, tackifier and silane coupling agent; The curing agent B component includes: polythiol, tertiary amine accelerator, co-accelerator, stabilizer, curing accelerator 1 and curing accelerator 2. The adhesive prepared by the present invention maintains fast curing for 5 minutes, high transparency and good bonding strength, low exothermic temperature and small stress during curing, good applicability in electronic device assembly, and electrical insulation , Excellent voltage breakdown resistance, impact resistance and aging resistance, greatly expanding the application of mercaptan-epoxy resin adhesives in the manufacture of electronic devices.

The present invention relates to an environmental protection type organic coumarin-base photoluminescence anti-counterfeiting pigment, an environmental protection type organic coumarin-base photoluminescence anti-counterfeiting ink, and preparation methods of the environmental protection type organic coumarin-base photoluminescence anti-counterfeiting pigment and the environmental protection type organic coumarin-base photoluminescence anti-counterfeiting ink. The photoluminescence anti-counterfeiting pigment contains 60-70 parts by weight of a cross-linked melamine-formaldehyde resin, and 1.0-2.0 parts by weight of a yellow dye. The method for preparing the photoluminescence anti-counterfeiting pigment and the photoluminescence anti-counterfeiting ink comprises: adding a formaldehyde solution and triethanolamine to a reactor, and adjusting the pH value to 8-9; adding melamine to the obtained mixture, adjusting the temperature to 75-85 DEG C, and adding an alcohol solvent to obtain a colorless and transparent melamine-formaldehyde resin solution; adding a coumarin-base dye and acetic anhydride, adjusting the pH value of the reaction system to 4.0-6.0, and carrying out cross-linking curing to obtain a cross-linked and cured colored resin dye mixture; drying, crushing, and screening to obtain the organic luminescence pigment; and adding the pigment to an aqueous binder resin to obtain the luminescence anti-counterfeiting ink. The anti-counterfeiting ink has characteristics of no polluting, fire retardation, no toxicity, no odor and the like, wherein destruction of the printing industry on the ecological environment can be reduced.

The invention discloses a series gap arrester comprising an arrester body, an insulator, an upper discharge rod and a lower discharge rod. An air gap is formed between the upper discharge rod and the lower discharge rod, and the air gap between the upper discharge rod and the lower discharge rod is fixed on the insulator. The upper discharge rod and the lower discharge rod are respectively formed by pressing, by weight, 20% of carbon fiber, 40% of high-carbon graphite, 5% of copper powder, 5% of white steel powder and 30% of conductive resin. The carbon fiber is rod-shaped, circular, octagonal, elliptic or oblong. No umbrella leaf flash-down phenomenon is caused. The series gap arrester has the characteristics of high strength (five times that of steel parts), strong heat resistance (resistant to high temperature above 2000 DEG C), small thermal expansion coefficient, small specific gravity (one fifth that of steep parts), light weight, arc resistance, corrosion resistance and strong aging and UV resistance. The carbon fiber can be permanently used.

The invention relates to an insulating spider resistant to electrical carbon mark in power cable thermal shrinkage terminal parts and components. The insulating spider is characterized by consisting of the following raw materials: low-density polyethylene or a POE (polyolefin elastomer), polyethylene-vinyl acetate or polyethylene-ethyl acrylate, an antioxidant 1010, a flame retardant, high-molecular wax and zinc stearate, wherein the flame retardant is melamine cyanurate and / or melamine isocyanuric acid salt, and also containing any one of aluminum hydroxide micro powder, magnesium hydroxide micro powder, iron oxide powder, light calcium carbonate, kaoline and talc powder, as well as color masterbatch or dye. The insulating spider has the advantages of good miscibility, easy molding, good appearance quality, high arc resistance and creepage resistance, good insulating effect, long service life and the like.

The invention relates to a sol-gel preparation method for a silver rare earth oxide contact material for a low-voltage switching device. The material chemically comprises a rare earth oxide, an oxide of Me, SnO2 and metallic silver. Mass percentage of each oxide accounting for total mass of the oxide is 1-5% of rare earth oxide, 1-5% of oxide of Me, and the balance SnO2. The mass percentage of a sum of mass of the three kinds of oxide to the mass of metallic silver is oxide: silver=85-95:15-5. The silver rare earth oxide contact material for the low-voltage switching device does not contain Cd, is not toxic and environment-friendly, prolongs service life of a contact, and has high hardness, density and conductivity, and therefore contact performance and reliability of electrical devices are improved.