CN106397937A - Cable material added with graphite and molybdenum disulfide to enhance lubricating property and wear resistance - Google Patents

Abstract

The invention discloses a cable material added with graphite and molybdenum disulfide to enhance lubricating property and wear resistance. The cable material is prepared from the following raw materials in parts by weight: low-density polyethylene 100-105 parts, an appropriate amount of absolute ethyl alcohol, nano magnesia 1.5-2 parts, a silane coupling agent KH550 0.1-0.12 part, enzymolysis xylogen 20-22 parts, sodium hydroxide solution with the concentration of 2wt% 400-420 parts, formalin with the concentration of 45wt% 6-7 parts, melamine 15-16 parts, an appropriate amount of 0.1 mol/L of hydrochloric acid, sodium pyrophosphate 4-5 parts, microencapsulated red phosphorus 5-6 parts, an appropriate amount of deionized water, butyl stearate 3-4 parts, graphite 4-5 parts, ammonium tetrathiomolybdate 2-3 parts, an appropriate amount of 1 mol/L nitric acid and 10-12 parts of polyethylene glycol 400. The prepared cable material is excellent in wear resistance, firm and dragging-resistant, flame-retardant and breakdown-resistant, and is quite suitable for outdoor overhead power cables, and the service life is prolonged.

Description

A kind of interpolation enhanced CABLE MATERIALS of graphite molybdenum bisuphide lubricating and wear-resisting

Technical field

The present invention relates to CABLE MATERIALS technical field, more particularly, to a kind of interpolation enhanced electricity of graphite molybdenum bisuphide lubricating and wear-resisting Cable material.

Background technology

Polyethylene, because having excellent electrical property, mechanical property, chemical-resistance and good processing characteristics, extensively should For making the daily living articles such as thin film, tubing, electric wire, plastic, packaging material and other high-grade, precision and advanced engineering skills Art field.Wherein Low Density Polyethylene has prominent pliability and an insulating properties, nontoxic and be easy to colour, and is largely used to cable Material, replaces halogen-containing polrvinyl chloride.Electric wire can constantly be subject to electricity, heat and mechanical stress etc. various in application process During the comprehensive function, such as overcurrent of factor, conductor can inject electronics and hole to insulating barrier, and insulating barrier easily occurs electronics Or hole accumulation, form Space-charge effect, cause electric field distortion, when serious, electrical breakdown occurs, cause transmission of electricity accident；Therefore, seek Look for effective way suppression space charge accumulation, homogenizing insulating barrier Electric Field Distribution, suppression electric branch growth, extend the use longevity of cable Life, is to prepare high-performance electric wire problem demanding prompt solution.

《The preparation of multi-layer mesoporous nano-MgO/LDPE Composite and its insulating properties》Adopt low in one literary composition Boiling point solvent method prepare multi-layer mesoporous structure nano magnesium oxide it is achieved that nano magnesia in Low Density Polyethylene uniformly point Dissipate, restrained effectively space charge accumulation under the Low Density Polyethylene 70KV/mm electric field adding 1% nano magnesia, improve Dc breakdown intensity, reduces dielectric constant, simultaneously high field by force under effectively inhibit electronics and hole injection, stop tunnel It is suppressed that the generation of Space-charge effect, the dielectric properties satisfaction of composite is as High Performance Insulation material for the generation of channel effect Use condition.But because the oxygen index (OI) ratio of polythene material is relatively low, belong to combustible material in addition it is also necessary to fire-retardant changing is carried out to it Property after could meet the use demand of CABLE MATERIALS further, the combination property of cable insulation material determines wire safe handling Property, therefore it is required that carrying out to insulant while Dielectric Properties, its anti-flammability, heat stability, mechanical property etc. being carried out Further investigation.

Content of the invention

The object of the invention is exactly the defect in order to make up prior art, provides a kind of interpolation graphite molybdenum bisuphide lubricating and wear-resisting Enhanced CABLE MATERIALS.

The present invention is achieved by the following technical solutions：

A kind of interpolation enhanced CABLE MATERIALS of graphite molybdenum bisuphide lubricating and wear-resisting, is prepared by the raw materials in：Low-density is gathered Ethylene 100-105, appropriate dehydrated alcohol, nano magnesia 1.5-2, Silane coupling agent KH550 0.1-0.12, enzymolysis xylogen 20-22, concentration are the sodium hydroxide solution 400-420 of 2wt%, concentration is formalin 6-7, the tripolycyanamide 15- of 45wt% 16th, the hydrochloric acid of 0.1mol/L is appropriate, sodium pyrophosphate 4-5, microencapsulated powder oil 5-6, appropriate deionized water, butyl stearate 3-4, Graphite 4-5, four thio ammonium molybdate 2-3,1mol/L nitric acid is appropriate, PEG400 10-12.

A kind of described interpolation enhanced CABLE MATERIALS of graphite molybdenum bisuphide lubricating and wear-resisting, is made up of step in detail below：

（1）By nano magnesia ultrasonic disperse in the dehydrated alcohol of 4-5 times amount, it is centrifuged, is dried, will be dried nano oxidized Magnesium is put in Muffle furnace, is warming up to 200-220 DEG C with the heating rate of 3-5 DEG C/min, is incubated 30-40 minute, takes out after cooling Stand-by；Silane coupling agent KH550 is dissolved in the dehydrated alcohol of 10-12 times amount, then mixes with the nano magnesia after calcining, It is centrifuged after ultrasonic disperse 30-40 minute, filters, is dried, obtain modified Nano magnesium oxide；

（2）The sodium hydroxide solution that enzymolysis xylogen and concentration are 2wt% mixes, with 300-400 rev/min of speed stir to It is completely dissolved, is heated to 90-95 DEG C, add the formalin that concentration is 45wt%, continue after stirring reaction 100-120 minute Add tripolycyanamide, be slowly added dropwise in the hydrochloric acid of 0.1mol/L and rear stand-by after continuing reaction 90-120 minute；By sodium pyrophosphate It is dissolved in the deionized water of 18-20 times amount, is subsequently adding in above-mentioned reaction, continue stirring reaction 60-90 minute, precipitation generates, Standing, filtration, deionized water are cleaned 2-3 time, are then placed in being dried with 80-90 DEG C of temperature in vacuum drying oven, final powder Broken, cross 200 mesh sieves, obtain modified enzymolysis lignin；

（3）2-3 hour in the nitric acid of 1mol/L graphite being immersed in 3-4 times amount, is washed with deionized to neutral post-drying Stand-by；Four thio ammonium molybdate is mixed with PEG400, adds the deionized water of total amount 3-4 times amount, be stirring evenly and then adding into Above-mentioned acidifying graphite, ultrasonic disperse 60-90 minute, centrifugal filtration, put into dry with 60-70 DEG C in baking oven after being washed with deionized Dry, then it is heated to 800-850 DEG C of calcining 90-120 minute under an atmosphere of hydrogen, obtain graphite molybdenum bisuphide heterozygosis powder；

（4）By step（1）（2）（3）The product obtaining and Low Density Polyethylene and remaining residual components are put into mixed at a high speed jointly In material machine, turned with 800-1000/the speed stirring mixing 10-12 minute of part after send in double roller open mill, control temperature 150-160 DEG C of degree is kneaded, and is then fed in double screw extruder, 150-170 DEG C of temperature control, extruding pelletization obtains final product.

It is an advantage of the invention that：The present invention adopts Mannich reaction principle to pass through the one-tenth such as formaldehyde, tripolycyanamide, sodium pyrophosphate Divide and enzymolysis xylogen is modified react, generate modified enzymolysis lignin, as a kind of carbon source in thermal decomposition process, permissible Thermal decomposition to macromolecular material plays inhibitory action, is compounded with microencapsulated powder oil, is added to Low Density Polyethylene cable In the preparation of material, synergism has obvious flame-retardant smoke inhibition effect, and the flame-retardant composition simultaneously adding is not halogen, by natural materials Generate, those non-renewable resources, safety and environmental protection can be substituted, flame retardant effect is excellent simultaneously；The system of the present invention also CABLE MATERIALS again With the addition of modified Nano magnesium oxide in standby, there is meso-hole structure, be uniformly dispersed in Low Density Polyethylene by batch mixing, relatively Electronics and hole injection is effectively inhibited, the generation stoping tunnel-effect, it is suppressed that the generation of Space-charge effect, carries under high field intensity High dc breakdown intensity, improves anti-breakdown performance and the insulation stability of CABLE MATERIALS of the present invention.

Four thio ammonium molybdate generation molybdenum bisuphide is coated on graphite surface by a series of technique by the present invention, formation Heterozygosis powder is added in matrix polyethylene, it is possible to increase the lubricity of material, thus improve anti-wear performance；The present invention becomes Distribution ratio is scientific and reasonable, and product lubricity is good, enhances processing fluidity and product shaping, the CABLE MATERIALS wearability made Excellent, the solid resistance to dragging of energy, and fire-retardant resistance is worn, and is especially suitable for outdoor overhead power cable, extends service life.

Specific embodiment

A kind of interpolation enhanced CABLE MATERIALS of graphite molybdenum bisuphide lubricating and wear-resisting, by following weight portion（Kilogram）Raw material system Become：Low Density Polyethylene 100, appropriate dehydrated alcohol, nano magnesia 1.5, Silane coupling agent KH550 0.1, enzymolysis xylogen 20th, concentration be the sodium hydroxide solution 400 of 2wt%, concentration be the formalin 6 of 45wt%, tripolycyanamide 15,0.1mol/L Appropriate hydrochloric acid, sodium pyrophosphate 4, microencapsulated powder oil 5, appropriate deionized water, butyl stearate 3, graphite 4, four thio ammonium molybdate 2nd, the nitric acid of 1mol/L is appropriate, PEG400 10.

A kind of described interpolation enhanced CABLE MATERIALS of graphite molybdenum bisuphide lubricating and wear-resisting, is made up of step in detail below：

（1）By nano magnesia ultrasonic disperse in the dehydrated alcohol of 4 times amount, it is centrifuged, is dried, by dried nano magnesia Put in Muffle furnace, be warming up to 200 DEG C with the heating rate of 3 DEG C/min, be incubated 30 minutes, take out stand-by after cooling；By silane Coupling agent KH550 is dissolved in the dehydrated alcohol of 10 times amount, then mixes with the nano magnesia after calcining, ultrasonic disperse 30 minutes It is centrifuged afterwards, filters, is dried, obtain modified Nano magnesium oxide；

（2）The sodium hydroxide solution that enzymolysis xylogen and concentration are 2wt% mixes, and is stirred to complete with 300 revs/min of speed Dissolving, is heated to 90 DEG C, adds the formalin that concentration is 45wt%, and stirring reaction continuously added melamine after 100 minutes Amine, is slowly added dropwise in the hydrochloric acid of 0.1mol/L and rear stand-by after continuing reaction 90 minutes；Sodium pyrophosphate is dissolved in going of 18 times amount In ionized water, it is subsequently adding in above-mentioned reaction, continues stirring reaction 60 minutes, precipitation generates, standing, filtration, deionized water Cleaning 2 times, is then placed in being dried with 80 DEG C of temperature in vacuum drying oven, finally pulverizes, cross 200 mesh sieves, obtain modified enzymolysis Lignin；

（3）2 hours in the nitric acid of 1mol/L graphite being immersed in 3 times amount, it is washed with deionized stand-by to neutral post-drying； Four thio ammonium molybdate is mixed with PEG400, adds the deionized water of total amount 3 times amount, be stirring evenly and then adding into above-mentioned acid Graphite, ultrasonic disperse 60 minutes, centrifugal filtration, put into 60 DEG C of dryings in baking oven after being washed with deionized, then in hydrogen Atmosphere is heated to 800 DEG C and calcines 90 minutes under enclosing, obtain graphite molybdenum bisuphide heterozygosis powder；

（4）By step（1）（2）（3）The product obtaining and Low Density Polyethylene and remaining residual components are put into mixed at a high speed jointly In material machine, send in double roller open mill after being mixed 10 minutes with the speed stirring of 800 turns/part, control 150 DEG C of temperature to enter Row mixing, is then fed in double screw extruder, 150 DEG C of temperature control, extruding pelletization obtains final product.

CABLE MATERIALS of the present invention is applied to the production of cable, after testing, the index reaching is as follows for cable product：Tensile strength 25.7MPa, elongation at break 333%, oxygen index (OI) 31.1%, dielectric strength 34.7MV/m.

Claims (2)

1. a kind of add the enhanced CABLE MATERIALS of graphite molybdenum bisuphide lubricating and wear-resisting it is characterised in that raw material by following weight portion Make：Low Density Polyethylene 100-105, appropriate dehydrated alcohol, nano magnesia 1.5-2, Silane coupling agent KH550 0.1- 0.12nd, enzymolysis xylogen 20-22, concentration be the sodium hydroxide solution 400-420 of 2wt%, concentration be the formalin of 45wt% 6-7, tripolycyanamide 15-16,0.1mol/L hydrochloric acid is appropriate, sodium pyrophosphate 4-5, microencapsulated powder oil 5-6, deionized water are fitted Amount, butyl stearate 3-4, graphite 4-5, four thio ammonium molybdate 2-3,1mol/L nitric acid is appropriate, PEG400 10-12.

2. according to claim 1 a kind of add the enhanced CABLE MATERIALS of graphite molybdenum bisuphide lubricating and wear-resisting it is characterised in that by Step is made in detail below：

（1）By nano magnesia ultrasonic disperse in the dehydrated alcohol of 4-5 times amount, it is centrifuged, is dried, will be dried nano oxidized Magnesium is put in Muffle furnace, is warming up to 200-220 DEG C with the heating rate of 3-5 DEG C/min, is incubated 30-40 minute, takes out after cooling Stand-by；Silane coupling agent KH550 is dissolved in the dehydrated alcohol of 10-12 times amount, then mixes with the nano magnesia after calcining, It is centrifuged after ultrasonic disperse 30-40 minute, filters, is dried, obtain modified Nano magnesium oxide；

（2）The sodium hydroxide solution that enzymolysis xylogen and concentration are 2wt% mixes, with 300-400 rev/min of speed stir to It is completely dissolved, is heated to 90-95 DEG C, add the formalin that concentration is 45wt%, continue after stirring reaction 100-120 minute Add tripolycyanamide, be slowly added dropwise in the hydrochloric acid of 0.1mol/L and rear stand-by after continuing reaction 90-120 minute；By sodium pyrophosphate It is dissolved in the deionized water of 18-20 times amount, is subsequently adding in above-mentioned reaction, continue stirring reaction 60-90 minute, precipitation generates, Standing, filtration, deionized water are cleaned 2-3 time, are then placed in being dried with 80-90 DEG C of temperature in vacuum drying oven, final powder Broken, cross 200 mesh sieves, obtain modified enzymolysis lignin；

（3）2-3 hour in the nitric acid of 1mol/L graphite being immersed in 3-4 times amount, is washed with deionized to neutral post-drying Stand-by；Four thio ammonium molybdate is mixed with PEG400, adds the deionized water of total amount 3-4 times amount, be stirring evenly and then adding into Above-mentioned acidifying graphite, ultrasonic disperse 60-90 minute, centrifugal filtration, put into dry with 60-70 DEG C in baking oven after being washed with deionized Dry, then it is heated to 800-850 DEG C of calcining 90-120 minute under an atmosphere of hydrogen, obtain graphite molybdenum bisuphide heterozygosis powder；

（4）By step（1）（2）（3）The product obtaining and Low Density Polyethylene and remaining residual components are put into mixed at a high speed jointly In material machine, turned with 800-1000/the speed stirring mixing 10-12 minute of part after send in double roller open mill, control temperature 150-160 DEG C of degree is kneaded, and is then fed in double screw extruder, 150-170 DEG C of temperature control, extruding pelletization obtains final product.