CN103524949A

CN103524949A - Modified polyvinyl chloride cable sheath material with low-temperature impact resistance

Info

Publication number: CN103524949A
Application number: CN201310519023.9A
Authority: CN
Inventors: 谢华
Original assignee: Lvbao Cable Group Co Ltd
Priority date: 2013-10-29
Filing date: 2013-10-29
Publication date: 2014-01-22
Anticipated expiration: 2033-10-29
Also published as: CN103524949B

Abstract

The invention relates to a cable material, specifically to a modified polyvinyl chloride cable sheath material with low-temperature impact resistance. The material comprises the following raw materials by weight: 23 to 26 parts of SG-3 polyvinyl chloride, 14 to 18 parts of isotactic polypropylene, 20 to 23 parts of EVA, 4 to 5 parts of low density polyethylene, 2 to 3 parts of zinc oxide, 6 to 8 parts of montmorillonite powder, 12 to 14 parts of meerschaum powder, 4 to 6 parts of diatomite, 1 to 2 parts of sodium carbonate, 15 to 18 parts of poly(propyleneglycol sebacate), 1 to 2 parts of di-n-octyltin bis(isooctyl mercaptoacetate), 3 to 5 parts of zinc oxide, 23 to 25 parts of carbon black 220, 1.2 to 1.5 parts of ethylene bisstearamide, 13 to 16 parts of tributyl citrate and 14 to 16 parts of an auxiliary agent. According to the invention, the advantages of the raw materials like SG-3 polyvinyl chloride, isotactic polypropylene and EVA are combined together, the prepared material has the advantages of flexibility, wear resistance, resistance to high temperature ageing, low-temperature impact resistance, resistance to chemical attack, safety and reliability in utilization, wide applicability to preparation of a variety of cable sheath insulating materials and wide market demands and prospects.

Description

A kind of low-temperature impact-resistant modified polyvinyl chloride cable jacket material

Technical field

The present invention relates to a kind of CABLE MATERIALS, be specifically related to a kind of low-temperature impact-resistant modified polyvinyl chloride cable jacket material and preparation method thereof.

Background technology

Along with expanding economy, need to use the place of cable to become diversified, the performance index of cable jacket material have been had to stricter and various requirement, such as insulativity, tensile strength, use temperature, the indexs such as flame retardant properties all have strict requirement, constantly improve the performance of sheath material, it is the active demand of economy and social development, there is poor fire more in traditional sheath material, poor chemical stability, high temperature is yielding, poor mechanical property, the problems such as work-ing life is short, bring a lot of inconvenience to actual use, even threaten people's the security of the lives and property, therefore, be badly in need of changing original sheath material formula, improve material property, with the various demand in appropriate cable market.

Summary of the invention

The object of the invention is to, a kind of low-temperature impact-resistant modified polyvinyl chloride cable jacket material is provided, promoted the performance of traditional polychloroethylene blended material, make it possess good mechanical property and processing characteristics, can adapt to specific environment for use condition, to achieve these goals, the technical solution used in the present invention is as follows:

A kind of low-temperature impact-resistant modified polyvinyl chloride cable jacket material, it is characterized in that, the component that material of the present invention comprises following weight part: SG-3 polyvinyl chloride 23-26, isotatic polypropylene 14-18, EVA 20-23, Low Density Polyethylene 4-5, zinc oxide 2-3, montmorillonite powder 6-8, sepiolite powder 12-14, diatomite 4-6, sodium carbonate 1-2, sebacic acid propanediol polyester 15-18, Imarcaptoacetate dioctyltin 1-2, zinc oxide 3-5, carbon black 220 23-25, ethylene bis stearamide 1.2-1.5, tributyl citrate 13-16, auxiliary agent 14-16.

The raw material that described auxiliary agent comprises following weight part: lazurite 20-25, linking agent TAC 4-5, Viscoat 295 2-3, Vulcanization accelerator TMTD 1-2, polyisobutene 2-3, aluminate coupling agent DL-411 1-2, ferrocene 2-3, dibasic lead phosphite 1-2, aluminum nitride powder 2-3, nanometer jade powder 2-3, methyl acrylate 2-3, Fructus Zanthoxyli oil 1-2; Preparation method puts into calcining furnace by lazurite to calcine 3-4 hour at 550-570 ℃, cooling, be ground into and put into 12-15% hydrochloric acid soln after 50-100 order and soak 2-3 hour, filter out lazurite powder, clear water is cleaned, and dries, be ground into 200-300 order powder, mix with other remaining component, grinding distribution 1-2 hour, obtains.

Described a kind of low-temperature impact-resistant modified polyvinyl chloride cable jacket material, its preparation method is: by after SG-3 polyvinyl chloride, isotatic polypropylene, EVA, Low Density Polyethylene blend evenly, add other remaining components, send in high-speed kneading machine, at 90-170 ℃, mediate 6-15min, after kneading material is cooling, send into twin screw extruder granulation, obtain insulating material of the present invention.

The present invention combines the advantage of the raw materials such as SG-3 polyvinyl chloride, isotatic polypropylene, EVA, Low Density Polyethylene, promoted the performance of traditional polychloroethylene blended material, there is good mechanical property and processing characteristics, the material of preparation is pliable and tough wear-resisting, heat resistant, low-temperature impact-resistant, resistance to chemical attack, long service life, can meet specific environment for use condition, and market application foreground is wide.

Embodiment

The raw material that the present embodiment comprises following weight part: SG-3 polyvinyl chloride 26, isotatic polypropylene 18, EVA 23, Low Density Polyethylene 5, zinc oxide 3, montmorillonite powder 8, sepiolite powder 14, diatomite 6, sodium carbonate 2, sebacic acid propanediol polyester 18, Imarcaptoacetate dioctyltin 2, zinc oxide 5, carbon black 220 5, ethylene bis stearamide 11.5, tributyl citrate 116, auxiliary agent 15.

The raw material that described auxiliary agent comprises following weight part: lazurite 25, linking agent TAC 5, Viscoat 295 3, Vulcanization accelerator TMTD 2, polyisobutene 3, aluminate coupling agent DL-411 2, ferrocene 3, dibasic lead phosphite 2, aluminum nitride powder 3, nanometer jade powder 3, methyl acrylate 3, Fructus Zanthoxyli oil 2; Preparation method puts into calcining furnace by lazurite at 570 ℃, to calcine 4 hours, cooling, is ground into put into 15% hydrochloric acid soln after 80 orders and soak 3 hours, filters out lazurite powder, clear water is cleaned, and dries, and is ground into 300 order powder, mix with other remaining component, grinding distribution 2 hours, obtains.

Described a kind of low-temperature impact-resistant modified polyvinyl chloride cable jacket material, its preparation method is: by after SG-3 polyvinyl chloride, isotatic polypropylene, EVA, Low Density Polyethylene blend evenly, add other remaining components, send in high-speed kneading machine, at 150 ℃, mediate 15min, after kneading material is cooling, send into twin screw extruder granulation, obtain insulating material of the present invention.

The performance test results of material of the present invention is: tensile strength is 17.6Mpa, elongation at break is 438%, after 90 ℃ * 70h of IRM902 oil processes, tensile strength and elongation at break are respectively 16.8Mpa, 405%, after 136 ℃ * 168h hot air aging, stretching strength retentivity 97.2%, elongation at break conservation rate is that 97.4%, 20 ℃ of volume specific resistance is 1.05 * 10 ¹⁴Ω m, through 15% the NaCl solution soaking of 60 ℃ after 7 days, the pick up of material is 0.0022%, after soaking, volume specific resistance velocity of variation is 0.0028%, through 80 ℃ of toluene solvants, soak after 7 days, without obvious swelling and cracking phenomena, impact embrittlement temperature and reach-42 ℃, under-50 ℃ of conditions, after bending, do not ftracture.

Claims

1. a low-temperature impact-resistant modified polyvinyl chloride cable jacket material, it is characterized in that, this Insulation Material is comprised of the raw material of following weight part: SG-3 polyvinyl chloride 23-26, isotatic polypropylene 14-18, EVA 20-23, Low Density Polyethylene 4-5, zinc oxide 2-3, montmorillonite powder 6-8, sepiolite powder 12-14, diatomite 4-6, sodium carbonate 1-2, sebacic acid propanediol polyester 15-18, Imarcaptoacetate dioctyltin 1-2, zinc oxide 3-5, carbon black 220 23-25, ethylene bis stearamide 1.2-1.5, tributyl citrate 13-16, auxiliary agent 14-16;

2. a kind of low-temperature impact-resistant modified polyvinyl chloride cable jacket material as claimed in claim 1, its manufacture craft is: by after SG-3 polyvinyl chloride, isotatic polypropylene, EVA, Low Density Polyethylene blend evenly, add other remaining components, send in high-speed kneading machine, at 90-170 ℃, mediate 6-15min, after kneading material is cooling, send into twin screw extruder granulation, obtain insulating material of the present invention.