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Temperature sensing cable material with CRT characteristics and preparation method thereof

A temperature-sensing cable and characteristic technology, applied in the direction of organic insulators, plastic/resin/wax insulators, rubber insulators, etc., can solve the problems of lower resistivity and rigid characteristics that cannot be realized in flexible cable manufacturing

Active Publication Date: 2009-12-30
QINGDAO SUNYFIRE TECHNOLOGE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a temperature-sensitive cable material with CRT characteristics to solve the problem that the rigid characteristics of ceramic materials cannot realize the manufacture of flexible cables, and the problem that the resistivity decreases linearly with the increase of temperature

Method used

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  • Temperature sensing cable material with CRT characteristics and preparation method thereof
  • Temperature sensing cable material with CRT characteristics and preparation method thereof
  • Temperature sensing cable material with CRT characteristics and preparation method thereof

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preparation example Construction

[0046] The embodiment of the present invention also provides a method for preparing a temperature-sensitive cable material with CRT characteristics. The specific steps are: use a high-speed mixer to add each material according to the proportion and then mix it at a low speed for 3-10 minutes;

[0047] Then mix at a high speed for 5-10 minutes to obtain a mixed powder, extrude the mixed powder through an extruder at 120-200° C., and shape it to obtain a temperature-sensitive cable material with CTR characteristics.

Embodiment 1

[0049]Take 100 parts of polyvinyl chloride, 10 parts of fumed white carbon black, 20 parts of dibutyl phthalate, 10 parts of organic-inorganic composite functional additives mainly based on zinc oxide, 2 parts of dibutyltin dilaurate, dibutyltin trioxide Add 1 part of antimony and 1 part of antioxidant 1010 into a high-speed mixer, mix at a low speed of 200rpm for 3 minutes, and then mix at a high speed of 1000rpm for 5 minutes to obtain a mixed powder, which is extruded at 160°C by a single-screw extruder Cable granules are obtained by granulation. The pellet sample was hot-pressed at 160°C into a sample sheet with a thickness of 1mm, and the resistivity-temperature change was measured on a megger to obtain a cable material with CTR characteristics with a critical temperature of 50°C. Resistivity-temperature change curve such as figure 1 .

Embodiment 2

[0051] Take 50 parts of polyvinyl chloride, 50 parts of chlorinated polyethylene, 10 parts of fumed silica, 10 parts of triphenyl phosphite, 10 parts of dioctyl phthalate, organic and inorganic compounds mainly composed of chromium oxide and vanadium oxide Add 5 parts of composite functional additives, 2 parts of dibutyltin maleate, 2 parts of microcrystalline paraffin, 5 parts of magnesium hydroxide, and 1 part of antioxidant 264 into a high-speed mixer, first mix at a low speed of 200rpm for 3 minutes, and then Mix at a high speed of 1000 rpm for 5 minutes to obtain a mixed powder, which is extruded and pelletized at 160° C. by a single-screw extruder to obtain cable pellets. The pellet sample was hot-pressed at 160°C into a sample sheet with a thickness of 1mm, and the resistivity-temperature change was measured on a megger to obtain a cable material with CTR characteristics with a critical temperature of 60°C. Resistivity-temperature change curve such as figure 2 .

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Abstract

The invention relates to technical fields of materials, chemical engineering and electronics, in particular to a cable material with a polymer substrate and CTR effect and a preparation method thereof. The temperature sensing cable material with CRT characteristics consists of thermoplastic polymer, a filling agent, a plasticizer, functional additives, a stabilizing agent, a flame retardant, a lubricant, an antioxidant and a processing agent, has the use temperature range between -30 and 150 DEG C, and can be applied on occasions such as recoverable line-type temperature sensing cables, fire prewarning and alarm devices, temperature measurement, overheating alarm and protection and the like. The temperature sensing cable material with the CRT characteristics takes a polymer material as a substrate, and is added with multiple organic and inorganic compounds with special CTR characteristics taken as the functional additives, and has the characteristics of flexibility, and capacities of being continuously processed and being used like a common cable material.

Description

technical field [0001] The present invention relates to the technical fields of materials, chemical industry and electronics, in particular to a polymer matrix cable material with negative critical temperature resistance (Critical Temperature Resistance, CTR) effect and a preparation method thereof. The use temperature range of this kind of cable material is -30~150℃, and it can be used in recoverable linear temperature-sensing cables, fire warning and alarm devices, temperature measurement, overheating alarm and protection and other occasions. Background technique [0002] At present, semiconductor fire early warning devices are often distributed in a point shape, and can only realize temperature sensing in a certain point-shaped area. For occasions that require large-area and long-distance real-time monitoring, such as oil pipelines, building cable wells, and large It is difficult for storage tanks, pipelines and chemical equipment to play a role. A more advanced approach...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/12C08L27/06C08L23/30C08L15/02C08L11/00C08L23/08C08L23/16C08L27/16C08L75/04C08L27/24C08K13/06C08K3/22H01B3/28H01B3/30
Inventor 曾学义赵琦邹志武张弢
Owner QINGDAO SUNYFIRE TECHNOLOGE
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