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125 DEG C irradiation cross-linked power cable and method for manufacturing same
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A technology of cross-linked power cables and manufacturing methods, applied in the direction of power cables, cable/conductor manufacturing, insulated cables, etc., can solve the problems of low mechanical strength, poor insulation performance, poor tear resistance, etc., and achieve insulation anti-aging ability Strong, excellent insulation electrical properties, good mechanical properties
Active Publication Date: 2012-04-18
上海金友金弘智能电气股份有限公司
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Due to its high price, complex processing technology, low mechanical strength, poor insulation performance, and poor tear resistance, silicone rubber greatly limits its application in power cables; fluoroplastics are expensive, complex processing technology, easy to Cracking and other shortcomings, currently not widely used
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Embodiment 1
[0028] Above-mentioned insulating layer 2 takes raw material by following proportioning:
[0029] Polyethylene resin 95 parts
[0030] 14 / 2EVA 5 parts
[0031] Tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol ester 0.2 parts
[0032] N,N-bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl]hydrazine 0.3 parts
[0033] 1,3,5-triallyl-s-triazine-2,4,6-trione 0.5 parts
[0034] The manufacturing method of 125°C radiation cross-linked power cable is as follows:
[0035] (1) wire drawing the core metal, annealing the above wire drawing metal, and twisting it into a conductor 1;
[0036] (2) prepare the insulating layer raw material, mix the composition ratio of the above-mentioned parts by weight with a plastic mixer, and stir evenly at normal temperature;
[0037] (3) Put the prepared insulating layer raw material into the extruder through banburying, kneading, and extruding the insulating layer on the surface of the conductor 1 on the extruder;
[...
Embodiment 2
[0042] The above-mentioned 125°C irradiation cross-linked polyethylene insulating layer is made of the following raw materials in weight ratio:
[0043] Polyethylene resin 94.5 parts
[0044] 14 / 2EVA 5.5 parts
[0045] Tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol ester 0.2 part
[0046] N,N-bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl]hydrazine 0.3 parts
[0047] 1,3,5-triallyl-s-triazine-2,4,6-trione 0.45 parts
[0048] Power cables with insulating layers made of the above-mentioned various weight parts can reach a temperature resistance level of 125°C after testing
Embodiment 3
[0050] The above-mentioned 125°C irradiation cross-linked polyethylene insulating layer is made of the following raw materials in weight ratio:
[0051] Polyethylene resin 93 parts
[0052]14 / 2EVA 6 parts
[0053] Tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol ester 0.3 parts
[0054] N,N-bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl]hydrazine 0.4 parts
[0055] 1,3,5-triallyl-s-triazine-2,4,6-trione 0.3 parts
[0056] Insulated cables made of the above-mentioned various weight parts can be used for power cables, and the temperature resistance level can reach 125°C after testing.
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Abstract
The invention relates to a 125 DEG C irradiation cross-linked power cable and a method for manufacturing the same. The cross-linked power cable can work in 125 DEG C environment, and the structure of the cable comprises a conductor, an insulation layer and an outer protection layer, wherein the insulation layer is a 125 DEG C irradiation cross-linked polyethylene insulation layer. The method for manufacturing the 125 DEG C irradiation cross-linked power cable comprises the following steps: mixing a polyethylene resin, 14 / 2EVA, pentaerythritol tetra[beta-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], N,N'-bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl]hydrazine and 1,3,5-triallyl-sym-triazine-2,4,6-triketone in a certain proportion by weight into a raw material for the insulation layer; extruding the raw material on the surface of the conductor after the raw material is subjected to banburying and open milling; and processing the insulation layer by an irradiation cross-linking process. The cable has the advantages of high levels of temperature resistance, large current-carrying capacity, good insulating electrical property, excellent mechanical property, strong insulating ageing resistance and high permissible short-circuit current, and can meet the requirements of power systems of important projects, such as television stations, track traffic, hospitals, high-grade buildings, and the like.
Description
Technical field: [0001] The invention relates to a method for manufacturing cross-linked power cables, in particular to a method for manufacturing cross-linked power cables irradiated at 125°C. Background technique: [0002] At present, domestic power systems generally use polyvinyl chloride insulated power cables. This type of polyvinyl chloride insulated power cable is low in temperature resistance (70-90°C), low in carrying capacity, easy to age, easy to crack, large dielectric loss, and toxic Defects such as high index and poor environmental protection performance are greatly restricted in the application field and scope of application, especially in some specific occasions and environments. In the European Union, the United States, Japan and other countries, the requirements for power cable products are getting higher and higher, and corresponding laws and regulations have been formulated; for example, power cables are required to contain no halogens, no harmful gases a...
Claims
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Application Information
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