Abstract: The present invention discloses a gas-insulating medium and its application. The gas-insulating medium includes the following components by mass: 8.4-76.7 parts of trans-1,1,1,4,4,4-hexafluoro-2-butene, and 23.3-91.6 parts of octafluorocyclobutane. The gas-insulating medium of the present invention has a dielectric strength better sulfur hexafluoride, and a low liquefaction temperature, and can be applied in a wider temperature range. In addition, the gas-insulating medium in certain compositions has similar properties with a single component insulating gas. when the gas leaks, the ratio of trans-1,1,1,4,4,4-hexafluoro-2-butene and octafluorocyclobutane remains unchanged, and during the maintenance of electrical equipment, trans-1,1,1,4,4,4-hexafluoro-2-butene and octafluorocyclobutane can be directly supplemented according to a certain ratio, without other operations such as analysis and detection.

Abstract: The present invention discloses a gas-insulating medium and its application. The gas-insulating medium includes the following components by mass: 8.4-76.7 parts of trans-1,1,1,4,4,4-hexafluoro-2-butene, and 23.3-91.6 parts of octafluorocyclobutane. The gas-insulating medium of the present invention has a dielectric strength better sulfur hexafluoride, and a low liquefaction temperature, and can be applied in a wider temperature range. In addition, the gas-insulating medium in certain compositions has similar properties with a single component insulating gas. when the gas leaks, the ratio of trans-1,1,1,4,4,4-hexafluoro-2-butene and octafluorocyclobutane remains unchanged, and during the maintenance of electrical equipment, trans-1,1,1,4,4,4-hexafluoro-2-butene and octafluorocyclobutane can be directly supplemented according to a certain ratio, without other operations such as analysis and detection.

Abstract: The invention relates to an environment-friendly artificial stone with low cost and high strength and a preparation method thereof, the artificial stone comprises the following raw materials in parts by mass: 60-80 parts of fritted sand; 10-30 parts of quartz powder; 9-14 parts of terephthalic unsaturated polyester resin; 0.6-1 parts of curing agent; 0.8-1 parts of coupling agent; 0.5-1 parts of pigment paste; 0.1-1 parts of pigment powder. The invention has advantages of: (1) using mine solid waste or waste materials as raw materials, and using blast-furnace gas and coke-oven gas recovered and purified in the productive process of the steel plant and coking plant as fuel, the production process is green and environment-friendly, which can recycle waste materials. (2) high strength, natural stripe, elegance appearance, green and environmental protection, and being recognized by global customers and promising in worldwide market.

Abstract: The invention discloses a concave-convex rotating body cloth mould, comprising a hollow cylinder, wherein the outer surface of the hollow cylinder is provided with grooves with gradually changing depths in the circumferential direction, and the groove is distributed with small air holes communicating with the inside of the hollow cylinder; one of the bottom surfaces of the hollow cylinder is provided with a compressed air inlet; the outer surface of the hollow cylinder is provided with an arc-shaped guide plate at intervals, and the guide plate is provided with powder and slurry spray nozzles; the above of the hollow cylinder is provided with a multicolor hopper; a rotating shaft is penetrated inside the hollow cylinder, and the rotating shaft is driven by a variable speed motor. The invention further discloses a method for preparing artificial boards. The artificial stone board prepared is realistic in effect, and has strong operability.

Abstract: The invention relates to an environment-friendly artificial stone with low cost and high strength and a preparation method thereof, the artificial stone comprises the following raw materials in parts by mass: 60-80 parts of fritted sand; 10-30 parts of quartz powder; 9-14 parts of terephthalic unsaturated polyester resin; 0.6-1 parts of curing agent; 0.8-1 parts of coupling agent; 0.5-1 parts of pigment paste; 0.1-1 parts of pigment powder. The invention has advantages of: (1) using mine solid waste or waste materials as raw materials, and using blast-furnace gas and coke-oven gas recovered and purified in the productive process of the steel plant and coking plant as fuel, the production process is green and environment-friendly, which can recycle waste materials. (2) high strength, natural stripe, elegance appearance, green and environmental protection, and being recognized by global customers and promising in worldwide market.

Abstract: A high flexural strength high density environmental friendly artificial glass composite slab and the preparation method, spherical glass sand or spherical glass powder, filler, unsaturated resin, curing agent, coupling agent, pigment paste and toner. The glass sand or the glass powder has high hardness, good light transmittance, and a smooth surface without pores. The glass powder, filler powder and a hollow glass microspheres fill the gap among the spherical glass sand or the spherical glass powder, and mutually mesh with each other to form a high-density structure. The resulting glass composite slab has the advantages of high strength, high density, wear resistance, shining gloss and good light transmittance, while the surface is smooth and is not likely to be subjected to staining, and it is environmental friendly, non-toxic and non-radioactive.