Composite insulating material for armored signal-transmission cable and preparation method of composite insulating material

A signal transmission and composite insulation technology, applied in the field of materials, can solve the problems of breakdown, insulated cables that cannot meet the signal transmission requirements, low temperature insulation performance, etc., and achieve the effect of good resistance

Active Publication Date: 2016-05-11
CHONGQING MATERIALS RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in a high temperature environment, the high temperature insulation performance of insulating materials decreases exponentially. In addition, the high temperature insulation performance of silicon dioxide is generally 2 to 3 orders of magnitude lower than that of magnesium oxide.
Especially in the high-temperature environment of 800°C, the two single-component insulating materials have poor voltage breakdown resistance, and breakdowns often occur under 500V high voltage, resulting in the loss of transmission signals in the entire cable
Therefore, insulated cables with two single materials are difficult to meet the signal transmission requirements of nuclear power plants under high temperature, high pressure, and high radiation environmental conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh the required components and put them into a beaker, the particle size is 600 mesh SiO 2 : 700g, particle size 200 mesh MgO: 300g, particle size 600 mesh CaO: 0.24g, particle size 600 mesh Al 2 o 3 : 0.056g, Fe with a particle size of 600 mesh 2 o 3 : 0.023g, 18g of methyl cellulose, poured into a ball mill for uniform ball milling, the grinding rate is about 400r / min, and the grinding time is 30-60min. Then slowly pour 200g of boiled pure water into the pot, stir while pouring the water, and then quickly and repeatedly knead until the magnesium oxide has no particles and is soft, extruded in a special extrusion mold to make a composite insulation Porcelain column φ7.2×1.8. After the porcelain pillars spread on the wooden board have evaporated and have a certain strength, first use a thin knife to remove the head and tail, and then use a straight wooden strip to straighten the porcelain pillars one by one and arrange them neatly. After drying in the shade for ...

Embodiment 2

[0034] Weigh the required components and put them into a beaker, the particle size is 600 mesh SiO 2 : 600g, particle size is 200 mesh MgO: 400g, particle size is 600 mesh CaO: 0.24g, particle size is 600 mesh Al 2 o 3 : 0.056g, the particle size is 600 mesh Fe 2 o 3: 0.023g, 18g of methyl cellulose, poured into a ball mill for uniform ball milling, the grinding rate is about 800r / min, and the grinding time is 30-60min. Then slowly pour 200g of boiled pure water into the pot, stir while pouring the water, and then quickly and repeatedly knead until the magnesium oxide has no particles and is soft, extruded in a special extrusion mold to make a composite insulation Porcelain column φ7.2×1.8. After the porcelain pillars spread on the wooden board have evaporated and have a certain strength, first use a thin knife to remove the head and tail, and then use a straight wooden strip to straighten the porcelain pillars one by one and arrange them neatly. After drying in the shade...

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Abstract

The invention relates to composite insulating material for an armored signal-transmission cable and a preparation method of the composite insulating material. The composite insulating material comprises, by weight, 600-700 parts of SiO2, 300-400 parts of MgO, 0.24 part of CaO, 0.056 part of Al2O3, 0.023 part of Fe2O3 and not more than 0.3 part of impurities, wherein the SiO2 wraps the MgO. The composite insulating material has the advantages that the material is used for signal transmission under harsh environment media such as nuclear power stations, and the signal transmission requirements under the high-temperature, high-pressure and high-radiation environment conditions of the nuclear power stations can be satisfied; the armored signal-transmission cable made by the material is wide in temperature working range which ranges from minus 273 DEG C to 1000 DEG C, suitable for the reactor (1E level K1 type) in a nuclear island and the high-radiation environment of outer space, and good in resistance to salt mist, hydraulic oil, aviation kerosene, epoxy scavenging agent and the like.

Description

technical field [0001] The invention relates to a material, in particular to a composite insulating material for armored signal transmission cables and a preparation method thereof. Background technique [0002] In 1947, the Cold War between the United States and the Soviet Union officially began. From October 4, 1957, the Soviet Union officially launched the first artificial earth satellite "Sputnik 1", to January 31, 1958, the United States launched the first artificial earth satellite. The earth satellite "Explorer" No. 1 began a crazy period of rapid development of a series of missiles, satellites, spacecraft, aircraft, and nuclear submarines. In 1957, in response to the frantic demand for military products during the Cold War, Whittaker Electronic Resources of the United States successfully developed a signal cable with metal oxide as an insulating material. Because of the excellent performance and reliability of the cable, almost all aerospace products later , Nuclear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/14H01B7/02H01B11/00
CPCC04B35/14C04B2235/3206C04B2235/3208C04B2235/3217C04B2235/3272C04B2235/5418C04B2235/602H01B7/02H01B11/00
Inventor 陈洁刘敏王华赵彦黄美良张立新冯邻江罗松鞠华张祖力
Owner CHONGQING MATERIALS RES INST
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