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Is the calorimeter for building materials calorific value?
Hebi Huanuo coal testing equipment ZDHW-8000A high precision microcomputer automatic calorimeter for measurement of electric power industry, coal, metallurgy, petrochemical, environmental protection, quality inspection, cement, paper, geological exploration, scientific research institute and other departments to measure the coal, coke, petroleum, cement, brick and heat it solid or liquid fuel. In accordance with the national standard GB/T213-2008 "method" the requirements of the determination of calorific value of coal. The high precision microcomputer full automatic calorimeter is the main instrument in the coal quality laboratory.
What is the best sound proof cotton in the decorative plaster board partition wall? Mineral wool rock and glass wool.
Rock wool and glass wool on the overall performance of almost the same, are brittle fiber composition, you need to get a good sound insulation, you need to use high-density materials, usually 80KG per cubic meter of the use of more. The price range is 40-60 yuan per square meter. This material can cause skin allergies and dust can cause respiratory allergies. Therefore, construction should pay attention to the construction personnel physical protection, materials must be completely sealed to the wall inside. If it is a ceiling with holes, you must not use glass wool.
What is the difference between high-density rock wool board and hard rock wool board?
Mineral wool, rock (mineral), cotton and glass wool, sometimes referred to as mineral wool, all belong to inorganic materials.
What are the differences between slag wool and rock wool?
Rock wool and slag cotton belong to mineral cotton, and they have many similarities in the production process, fiber morphology, alkali resistance, thermal conductivity and non combustibility.
8cm what is the sound volume of the soundproof cotton?
Restate the professional point of view, the sound-absorbing material as insulation, sound-absorbing insulation materials or when used is not scientific. In both sound and sound (such as the design of reverberation time) when the need to use composite insulation board and sound-absorbing materials, can not only ensure the system sound transmission coefficient is small, and ensure the sound reflection weakened reach, sound insulation and sound absorption cream effect.
The difference between rock wool and mineral wool
Cotton like short staple fibers made from silicate melts, including slag cotton, rock wool, glass wool and ceramic fibers, generally only refer to the first two.
Fireproof rock wool board can be used as firewall?
Rock wool board mainly by hydrophobic rock wool board pendulum method for production of insulation layer material, composite rock wool board is the natural rocks such as gabbro, Xuan Wuyan, dolomite, iron ore, aluminum and vanadium as the main raw materials, inorganic fiber adding binder, hydrophobic agent by high temperature melting, made of fiber the implementation of standards, GB/T25975-2010 is "building exterior insulation rock wool products"; rock cotton in the industrial slag blast furnace slag such as slag, phosphorus slag and fly ash as the main raw material, inorganic fiber after remelting fibrosis made. This paper introduces the main A-fire exterior wall external insulation system on the market (the following text from Chinese architectural design and Research Institute of standards "exterior insulation construction" Standard No. 10J121) the implementation of standards is GB/T11835-2007 "insulation rock wool, slag wool and their products".
What are the advantages of inorganic fiber spraying in construction engineering?
Inorganic fiber spraying is a new type of environmentally friendly architectural coatings, mainly composed of inorganic fiber and water-based adhesive composition, by mixing by air pressure pump for spraying, spraying and atomized water mixed to form coating on the substrate to protect. The coating can meet the requirements of sound absorption, thermal insulation and fire protection.