CN104711696A - Heat-resisting antistatic UHMWPE (ultra high molecular weight polyethylene) fiber and preparation method thereof - Google Patents
Heat-resisting antistatic UHMWPE (ultra high molecular weight polyethylene) fiber and preparation method thereof Download PDFInfo
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Abstract
The invention provides a heat-resisting antistatic UHMWPE (ultra high molecular weight polyethylene) fiber and a preparation method thereof. The fiber includes UHMWPE powder, nano conductive particles, a cross-linking agent, a curing agent, an initiator and an antioxygen. The preparation method includes the following steps: the UHMWPE powder swells through a solvent and holes are formed; then a composite modifying agent formed through jointly soaking the cross-linking agent, the curing agent, the initiator, the antioxygen, the nano conductive particles and the solvent is added, and uniformly permeates the holes in the UHMWPE powder; after uniform mixing, spun silks are extruded out through a screw extruder; and the UHMWPE fiber is obtained through drafting after the solvent is removed; the heat-resisting antistatic UHMWPE fiber is obtained through irradiation crosslinking. The heat-resisting antistatic UHMWPE fiber has the comprehensive performance of wear resistance, heat resistance, static resistance, shock resistance, self-lubrication, corrosion resistance, low temperature resistance, sanitary and non-poisonous performance, less possibilities of adhesion and water absorption, small density and the like, is wide in application range and long in service life.
Description
Technical field
The invention belongs to technical field of fibre production, be specifically related to a kind of heat-resistant electrostatic superhigh molecular weight polyethylene fibers and preparation method thereof.
Background technology
UHMWPE fiber (superhigh molecular weight polyethylene fibers) is the third generation high-performance fiber occurred after carbon fiber and aramid fiber, there is the multiple excellent properties such as chemical resistance and weather resisteant, high-energy absorption, low temperature resistant and electric insulation, be widely used in fields such as military affairs, space flight navigation engineering and high-performance, light composite material and sports apparatus, be used for producing such as rope, net, medicine equipment, fabric, lamination, composite product and ballistic-resistant article.
Nano modification UHMWPE, has scholar to do certain research both at home and abroad.The obtained UHMWPE/Fe composite such as Krasnor, in high-speed friction process, there is chemical reaction in iron particle, can play activated centre effect.Composite has low coefficient of friction, and good stability.Some scholar is proposed phyllosilicate fusion intercalation modified UHMWPE, research finds, phyllosilicate is peeled off and is dispersed in UHMWPE matrix, the flow processability of material can be made moderate progress, but this method of modifying to as if the UHMWPE of viscosity average molecular weigh about 1,500,000, for the UHMWPE that viscosity average molecular weigh is higher, phyllosilicate just cannot be peeled off and be dispersed in UHMWPE matrix.
Nanometer particle-modified UHMWPE, if do not resolve the compatible of nano particle and UHMWPE and disperse, the interface of nano particle and UHMWPE has hole, gap or nano particle is reunited in UHMWPE matrix, the mechanical property of material especially ABRASION RESISTANCE and resistance to impact significantly declines, and loses as the most key wear-resisting, the voltage endurance of the UHMWPE tubing of slurry body, powder medium.So nano-material surface process and high efficiency dispersion technique are the essential condition that its function effectively plays.
Because the melt viscosity of UHMWPE own is high, cannot conventional extrusion equipment machine-shaping tubing be used, and adding of nano particle, the melt viscosity of system is strengthened further.The dispersion of nano particle in the matrix of high melt viscosity and microstructure control technology realize high-performance UHMWPE composite industryization to produce and the key of application.
Chinese patent CN031153003 discloses a kind of method simultaneously improving heat-resisting, the creep resistant of high-tenacity polyethylene fibre and cementability.In the method, by after the superhigh molecular weight polyethylene fibers acetone washing surface impurity that made, soak in the organic solvent of photosensitizer benzophenone and crosslinking agent acrylate, after taking-up, carry out cross-linked polymeric by ultraviolet lighting again.The method belongs to the cross-linking modified category of fiber, improves the heat resistance of fiber, creep resistance and cementability to a certain extent.But, the process more complicated of cross-linked polymeric, control in commercial process is more difficult, on the other hand, due to polyethylene highly crystalline, photosensitizer and crosslinking agent mainly concentrate on fiber surface, are difficult to enter fibrous inside, therefore fundamentally cannot improve heat resistance and the creep-resistant property of fiber.
Patent CN101538793A discloses the method improving creep-resistant property of ultra-high molecular weight polyethylene fiber.First to superhigh molecular weight polyethylene fibers by after the supercritical carbon dioxide assist infiltration preliminary treatment that is dissolved with photosensitizer, then it is crosslinked through ultraviolet light irradiation, superhigh molecular weight polyethylene fibers interior molecules interchain to be occurred, thus improves its creep-resistant property.Use the pretreated object of supercritical carbon dioxide assist infiltration to be improve Small molecular length of penetration in the fibre, and the object of ultraviolet irradiation technology makes Small molecular occur to be cross-linked at fibrous inside.The treatment process condition of the method is: supercritical carbon dioxide fluid treatment temperature is 80 DEG C ~ 120 DEG C, and processing pressure is 9 ~ 15 MPa, and circulation timei is 30 ~ 90min; Photosensitizer addition is 10 ~ 30 of fiber quality, and the ultraviolet irradiation time is 2 ~ 16min.Creep-resistant property through modified superhigh molecular weight polyethylene fibers increases, and because supercritical carbon dioxide fluid treatment conditions are harsh, is difficult to suitability for industrialized production.
USP5578374 and USP5958582 discloses a kind of method adopting again stretch raising UHMWPE fiber heat resistance and creep-resistant property, carry out multi-drawing or first heat-treat fiber carrying out multi-drawing again to UHMWPE finished fiber at 135 DEG C ~ 160 DEG C, effectively can improve heat resistance and the creep resistance of UHMWPE fiber.But this method can not improve the surface adhesiveness energy of UHMWPE fiber simultaneously, and when adopting secondary or stretch for three times, draft temperature is higher, and draw speed is very low, thus causes fiber cost to increase substantially.
USP4870136 disclose a kind of improve UHMWPE fiber heat resistance, creep resistance and surface adhesiveness can method.This method is first by a certain proportion of UHMWPE powder, radical initiator, silane compound and diluent melting mixing in screw rod, carry out plasticizing melt spinning, the silanization graft reaction of UHMWPE has been caused by heat at spinning phase, to spin fiber carries out hot-stretch in the medium of extractant and crosslinking agent, and then be placed in boiling water and complete cross-linking reaction.This method gained fiber equilibrium melting point improves greatly, and resistant fiber creep properties and surface adhesiveness can also improve.But this method owing to adding a large amount of initator and graft compound and stretching after graft reaction completes again in UHMWPE spinning solution, thus make tensile fiber multiple lower, and the mechanical property of last gained fiber is poor.
Summary of the invention
For solving the problem, combination properties such as the invention discloses heat-resistant electrostatic superhigh molecular weight polyethylene fibers and preparation method thereof, the fiber produced has wear-resisting, heat-resisting, antistatic, shock resistance, self-lubricating, corrosion-resistant, low temperature resistant, health is nontoxic, not easily adhere to, not easily absorb water, density is less.
For achieving the above object, technical scheme of the present invention is as follows:
Heat-resistant electrostatic superhigh molecular weight polyethylene fibers, this fiber comprises ultra-high molecular weight polyethylene powder, conductive nano particle, crosslinking agent, curing agent, initator and antioxidant.
The preparation method of heat-resistant electrostatic superhigh molecular weight polyethylene fibers, by solvent swell ultra-high molecular weight polyethylene powder, form hole, then the composite modifier that crosslinking agent, curing agent, initator, antioxidant, conductive nano particle and solvent infiltrate jointly is added, uniformly penetrating is in ultra-high molecular weight polyethylene powder hole, after mixing, by screw extruder extruding spinning, obtain ultra-high molecular weight polyethylene composite fibre through drawing-off after removing solvent, eventually pass cross-linking radiation and obtain heat-resistant electrostatic superhigh molecular weight polyethylene fibers.
The mode that the present invention is combined with chemical crosslinking by physical crosslinking, adds two-dimensional structure material nano conductive particle, plays the effect of reinforcement in ultra-high molecular weight polyethylene matrix, like " reinforcing bar " in reinforced concrete structure; Meanwhile, also with the addition of crosslinking agent and curing agent in the base, by chemical crosslinking, form a kind of cross-linked structure, ultra-high molecular weight polyethylene matrix and conductive nano particle are closely coupled together, form a kind of heat-resisting anlistatig rock-steady structure.
Described heat-resistant electrostatic superhigh molecular weight polyethylene fibers and preparation method thereof, is characterized in that, described ultra-high molecular weight polyethylene powder viscosity average molecular weigh is 1,000,000 ~ 7,000,000, is preferably 2,000,000 ~ 5,000,000.
Described heat-resistant electrostatic superhigh molecular weight polyethylene fibers and preparation method thereof, it is characterized in that, described solvent is naphthane, decahydronaphthalene, normal heptane, n-hexane, cyclohexane, paraffin oil, vegetable oil, animal oil, kerosene, one or more mixture of dimethylbenzene, and the weight ratio of solvent and ultra-high molecular weight polyethylene powder is 1:1 to 20:1.
Described heat-resistant electrostatic superhigh molecular weight polyethylene fibers and preparation method thereof, it is characterized in that, described crosslinking agent is one or several in acid anhydrides, diamines, dihydroxylic alcohols, binary acid, polyalcohol, polyacid or polynary amine, acrylic amide, esters of acrylic acid, isocyanates, isocyanic acid carbamide compounds, and consumption is 0% ~ 5% of ultra-high molecular weight polyethylene powder weight.
Described heat-resistant electrostatic superhigh molecular weight polyethylene fibers and preparation method thereof, it is characterized in that, described curing agent is one or several in acid anhydrides, diamines, dihydroxylic alcohols, binary acid, polyalcohol, polyacid or polyamine compounds, and consumption is 0% ~ 5% of ultra-high molecular weight polyethylene powder weight.
Described heat-resistant electrostatic superhigh molecular weight polyethylene fibers and preparation method thereof, it is characterized in that, described initator is peroxidating class initator, azo-initiator or photoinitiator, be preferably cyclohexanone peroxide, dibenzoyl peroxide, cumyl peroxide, tert-butyl cumyl oxide, 1, 3-1, 4-bis-(tert-butylperoxyiso-propyl) benzene, tert-butyl hydroperoxide, azodiisobutyronitrile, 2,2'-Azobis(2,4-dimethylvaleronitrile), one or several in benzophenone and derivative thereof, consumption is 0% ~ 3% of ultra-high molecular weight polyethylene powder weight.
Described heat-resistant electrostatic superhigh molecular weight polyethylene fibers and preparation method thereof, is characterized in that, described conductive nano particle is metal, nonmetal, oxide semiconductor, and its consumption is 0 ~ 3% of ultra-high molecular weight polyethylene powder weight.
Described heat-resistant electrostatic superhigh molecular weight polyethylene fibers and preparation method thereof, it is characterized in that, described antioxidant is 2, 6-di-tert-butylphenol, 2, 4, 6-tri-tert-butylphenol, 4, 4 '-thiobis (6-tertiary butyl-3-methylphenol) or four [methylene-3-(3', 5 '-di-tert-butyl-4 '-antelope base phenyl) propionic acid] pentaerythritol ester and triphenyl phosphite, tricresyl phosphite (2, 4-di-tert-butyl phenyl) ester, the different monooctyl ester of tricresyl phosphite or tricresyl phosphate benzene methyl or dilauryl thiodipropionate, one or more of thio-2 acid bay octadecyl ester or thio-2 acid two (13 ester), consumption is 0.1% ~ 1% of ultra-high molecular weight polyethylene powder weight.
Described heat-resistant electrostatic superhigh molecular weight polyethylene fibers and preparation method thereof, it is characterized in that, described crosslinking method is that X-ray or gamma-rays or electron irradiation are cross-linked, or be ultraviolet irradiation or infrared irridiation crosslinked, and other high-energy ray irradiations are cross-linked or one or several combination in hot cross-linking radiation.
Fiber of the present invention, is applicable to rope, crane rope, mooring rope or rigging, a kind of enhancing product containing strengthening element, such as, for the multilayer composite product of armor application, bulletproof jacket, the helmet, hard and soft protective plate, vehicular armor plate, fishing line and fishing net, earth mat, goods net and curtain, kite string, dental floss, tennis racket line, canvas, woven cloth and nonwoven fabric, webbing, battery separators, capacitor, pressure vessel, flexible pipe, umbilical cable, automotive fittings, power transmission belt, cable, optical cable, construction material, Nai Qieci and Cut resistant article, protective gloves, compound motion is equipped, ski, the helmet, canoe, dugout canoe, bicycle and hull and spar, diffuser, high-performance electric insulating sublayer, antenna house, sail, and geotextile, have wear-resisting, heat-resisting, antistatic, shock resistance, self-lubricating, corrosion-resistant, low temperature resistant, health is nontoxic, not easily adhere to, not easily absorb water, the combination properties such as density is less, applicability is wide, long service life.
Detailed description of the invention
Below in conjunction with detailed description of the invention, illustrate the present invention further, following detailed description of the invention should be understood and be only not used in for illustration of the present invention and limit the scope of the invention.
In following embodiment, the various performances of crosslinked ultra-high-molecular-weight polyethylene fiber of the present invention such as can measure with the following method.
1) heat resistance
In 115 DEG C of baking oven air ambients after 100 hours aging, test crosslinked ultra-high-molecular-weight polyethylene tensile strength of fiber of the present invention and reserved elongation at break.
2) creep elongation
Tensile test method according to specifying in GBT 19975-2005 high-strength chemical-fibre filament draw method for testing performance is carried out, and wherein, load is 50% of fibrous fracture load, test temperature 70 DEG C.
3) gel content is according to gel content method of testing in ASTM D276-01 (2006) " gel content of cross-linked ethylene plastics and the standard method of test of swelling ratio ", adopts dimethylbenzene as solvent.
4) fiber number
According to the method test fibre number specified in GBT 19975-2005.
5) fracture strength
According to the method test fibrous fracture intensity specified in GBT 19975-2005.
6) elongation at break
According to the method test fibrous fracture percentage elongation specified in GBT 19975-2005.
7) resistance
According to GB/T12703-1991 textiles static electricity testing method test fabric resistor
Embodiment 1
The ultra-high molecular weight polyethylene powder 7 weight portion (Gur 4022 of Ticona company, molecular weight ranges is 5,000,000), antioxidant 2,6-di-tert-butylphenol 0. 07 weight portion and easy volatile solvent decahydronaphthalene 83 weight portion, at 90 DEG C swelling 5 hours, form fully swelling ultra-high molecular weight polyethylene suspending liquid A, get the easy volatile solvent decahydronaphthalene of 10 weight fraction and the mixture (both each 5 weight fraction) of kerosene again, use high speed agitator, stir with the rotating speed of 1000 revs/min, the crosslinking agent ethyl 2-methacrylate adding 0.35 weight portion is successively stirred on limit, the initator azodiisobutyronitrile of 0.21 weight portion, the silver nano-grain of 0.14 weight portion and the curing agent maleic anhydride of 0.35 weight portion, stir after within 10 minutes, mixing and obtain solution B, solution B is joined in solution A, after mixing, through Screw Extrusion spinning, then the solvent in fiber is removed in evaporation or volatilization under nitrogen protection, then by 4 grades of super times hot gas spring (total multiplying powers of drawing-off 45 times, drawing temperature controls at 120 DEG C, winding speed 45m/min), the fiber product of gained is through electron number cross-linking radiation (irradiation dose is 2Mrad).After radiation, the performance of fiber product is as shown in table 1.
Table 1
Embodiment 2
The ultra-high molecular weight polyethylene powder 7 weight portion (Gur 4022 of Ticona company, molecular weight ranges is 5,000,000), antioxidant 2,4,6-tri-tert-butylphenol and triphenyl phosphite 0. 007 weight portion (7:3 ratio) and easy volatile solvent naphthane 85 weight portion, at 90 DEG C swelling 4 hours, form fully swelling ultra-high molecular weight polyethylene suspending liquid A, get the easy volatile solvent naphthane of 10 weight fraction again, use high speed agitator, stir with the rotating speed of 1200 revs/min, the crosslinking agent tolysulfonyl isocyanates adding 0.35 weight portion is successively stirred on limit, the initator dibenzoyl peroxide of 0.21 weight portion, the CNT of 0.14 weight portion and the curing agent phthalic anhydride of 0.35 weight portion, stir after within 30 minutes, mixing and obtain solution B, solution B is joined in solution A, after mixing, through Screw Extrusion spinning, then the solvent in fiber is removed in evaporation or volatilization under nitrogen protection, then by 4 grades of super times hot gas spring (total multiplying powers of drawing-off 50 times, drawing temperature controls at 155 DEG C, winding speed 50m/min), the fiber product of gained is through electron number cross-linking radiation (irradiation dose is 2.5Mrad), after radiation, the performance of fibre is as shown in table 2.
Table 2
Embodiment 3
The ultra-high molecular weight polyethylene powder 7 weight portion (Gur 4022 of Ticona company, molecular weight ranges is 5,000,000), antioxidant 4,4 '-thiobis (6-tertiary butyl-3-methylphenol) 0. 3 weight portions and easy volatile solvent dimethylbenzene and naphthane 75 weight portion (2:1 ratio), at 95 DEG C swelling 4 hours, form fully swelling ultra-high molecular weight polyethylene suspending liquid A, get the easy volatile solvent dimethylbenzene of 10 weight fraction again, use high speed agitator, stir with the rotating speed of 1500 revs/min, the crosslinking agent ethoxyquin trimethylolpropane triacrylate adding 0.35 weight portion is successively stirred on limit, the initator benzophenone of 0.21 weight portion, the Graphene of 0.14 weight portion and the curing agent p-phenylenediamine (PPD) of 0.35 weight portion, stir after within 30 minutes, mixing and obtain solution B, solution B is joined in solution A, after mixing, through Screw Extrusion spinning, then the solvent in fiber is removed in evaporation or volatilization under nitrogen protection, then by 4 grades of super times hot gas spring (total multiplying powers of drawing-off 40 times, drawing temperature controls at 130 DEG C, winding speed 45m/min), carry out gamma-ray irradiation to the fibre of gained to be cross-linked, irradiation dose is 8Mrad, after radiation, the performance of fiber product is as shown in table 3:
Table 3
Embodiment 4
The ultra-high molecular weight polyethylene powder 7 weight portion (Gur 4022 of Ticona company, molecular weight ranges is 5,000,000), antioxidant triphenyl phosphite 0. 3 weight portion and non-easy volatile solvent white oil 83 weight portion, at 100 DEG C swelling 4 hours, form fully swelling ultra-high molecular weight polyethylene suspending liquid A, get the not easy volatile solvent white oil of 10 weight fraction again, use high speed agitator, stir with the rotating speed of 1800 revs/min, the crosslinking agent ethoxyquin trimethylolpropane triacrylate adding 0.35 weight portion is successively stirred on limit, the initator benzophenone of 0.21 weight portion and dibenzoyl peroxide (1:1 ratio), the copper nano particles of 0.14 weight portion and the curing agent p-phenylenediamine (PPD) of 0.35 weight portion, stir after within 30 minutes, mixing and obtain solution B, solution B is joined in solution A, after mixing, through Screw Extrusion spinning, extract through hydrocarbon extractant, after drying, then by 4 grades of super times hot gas spring (total multiplying powers of drawing-off 40 times, drawing temperature controls at 140 DEG C, winding speed 50m/min), the fiber product of gained is through electron number cross-linking radiation (irradiation dose is 2Mrad), after radiation, the performance of fiber product is as shown in table 4.
Table 4
Embodiment 5
The ultra-high molecular weight polyethylene powder 8 weight portion (Gur 4022 of Ticona company, molecular weight ranges is 5,000,000), antioxidant dilauryl thiodipropionate 0. 3 weight portion and easy volatile solvent decahydronaphthalene 83 weight portion, at 95 DEG C swelling 4 hours, form fully swelling ultra-high molecular weight polyethylene suspending liquid A, get the easy volatile solvent decahydronaphthalene of 10 weight fraction again, use high speed agitator, stir with the rotating speed of 2000 revs/min, the crosslinking agent triallyl cyanurate adding 0.35 weight portion is successively stirred on limit, the initator benzophenone of 0.21 weight portion, the gold nano grain of 0.14 weight portion and the curing agent fumaric acid of 0.35 weight portion, stir after within 30 minutes, mixing and obtain solution B, solution B is joined in solution A, after mixing, through Screw Extrusion spinning, then the solvent in fiber is removed in evaporation or volatilization under nitrogen protection, then by 4 grades of super times hot gas spring (total multiplying powers of drawing-off 45 times, drawing temperature controls at 160 DEG C, winding speed 45m/min), the fibre of gained is cross-linked through ultraviolet irradiation, exposure time is 10s, after radiation, the performance of fiber product is as shown in table 5.
Table 5
Comparative example 1
The ultra-high molecular weight polyethylene powder 7 weight portion (Gur 4022 of Ticona company, molecular weight ranges is 5,000,000), antioxidant 2, 6-di-tert-butylphenol 0. 3 weight portion and easy volatile solvent decahydronaphthalene 93 weight portion, at 90 DEG C swelling 4 hours, form fully swelling ultra-high molecular weight polyethylene suspension, after mixing, through Screw Extrusion spinning, then the solvent in fiber is removed in evaporation or volatilization under nitrogen protection, then by 4 grades of super times hot gas spring (total multiplying powers of drawing-off 45 times, drawing temperature controls at 120 ~ 160 DEG C, winding speed 45m/min), the fibre performance of gained is as shown in table 6.
Table 6
Comparative example 2
The ultra-high molecular weight polyethylene powder 7 weight portion (Gur 4022 of Ticona company, molecular weight ranges is 5,000,000), antioxidant triphenyl phosphite 0. 3 weight portion and non-easy volatile solvent white oil 93 weight portion, at 90 DEG C swelling 4 hours, form fully swelling ultra-high molecular weight polyethylene suspension, after mixing, through Screw Extrusion spinning, extract through hydrocarbon extractant, after drying, then by 4 grades of super times hot gas spring (total multiplying powers of drawing-off 45 times, drawing temperature controls at 120 ~ 160 DEG C, winding speed 45m/min), the performance of the fibre of gained is as shown in table 7.
Table 7
Claims (10)
1. heat-resistant electrostatic superhigh molecular weight polyethylene fibers, is characterized in that: this fiber comprises ultra-high molecular weight polyethylene powder, conductive nano particle, crosslinking agent, curing agent, initator and antioxidant.
2. the preparation method of heat-resistant electrostatic superhigh molecular weight polyethylene fibers, it is characterized in that: by solvent swell ultra-high molecular weight polyethylene powder, form hole, then crosslinking agent is added, curing agent, initator, antioxidant, the composite modifier that conductive nano particle and solvent infiltrate jointly, uniformly penetrating is in ultra-high molecular weight polyethylene powder hole, after mixing, by screw extruder extruding spinning, ultra-high molecular weight polyethylene composite fibre is obtained through drawing-off after removing solvent, eventually pass cross-linking radiation and obtain heat-resistant electrostatic superhigh molecular weight polyethylene fibers.
3. heat-resistant electrostatic superhigh molecular weight polyethylene fibers according to claim 1 and 2 and preparation method thereof, is characterized in that: described ultra-high molecular weight polyethylene powder viscosity average molecular weigh is 1,000,000 ~ 7,000,000, is preferably 2,000,000 ~ 5,000,000.
4. the preparation method of heat-resistant electrostatic superhigh molecular weight polyethylene fibers according to claim 2, it is characterized in that: described solvent is naphthane, decahydronaphthalene, normal heptane, n-hexane, cyclohexane, paraffin oil, vegetable oil, animal oil, kerosene, one or more mixture of dimethylbenzene, and the weight ratio of solvent and ultra-high molecular weight polyethylene powder is 1:1 to 20:1.
5. heat-resistant electrostatic superhigh molecular weight polyethylene fibers according to claim 1 and 2 and preparation method thereof, it is characterized in that: described crosslinking agent is one or several in acid anhydrides, diamines, dihydroxylic alcohols, binary acid, polyalcohol, polyacid or polynary amine, acrylic amide, esters of acrylic acid, isocyanates, isocyanic acid carbamide compounds, and consumption is 0% ~ 5% of ultra-high molecular weight polyethylene powder weight.
6. heat-resistant electrostatic superhigh molecular weight polyethylene fibers according to claim 1 and 2 and preparation method thereof, it is characterized in that: described curing agent is one or several in acid anhydrides, diamines, dihydroxylic alcohols, binary acid, polyalcohol, polyacid or polyamine compounds, and consumption is 0% ~ 5% of ultra-high molecular weight polyethylene powder weight.
7. heat-resistant electrostatic superhigh molecular weight polyethylene fibers according to claim 1 and 2 and preparation method thereof, it is characterized in that: described initator is peroxidating class initator, azo-initiator or photoinitiator, be preferably cyclohexanone peroxide, dibenzoyl peroxide, cumyl peroxide, tert-butyl cumyl oxide, 1, 3-1, 4-bis-(tert-butylperoxyiso-propyl) benzene, tert-butyl hydroperoxide, azodiisobutyronitrile, 2,2'-Azobis(2,4-dimethylvaleronitrile), one or several in benzophenone and derivative thereof, consumption is 0% ~ 3% of ultra-high molecular weight polyethylene powder weight.
8. heat-resistant electrostatic superhigh molecular weight polyethylene fibers according to claim 1 and 2 and preparation method thereof, is characterized in that: the consumption of described conductive nano particle is 0 ~ 3% of ultra-high molecular weight polyethylene powder weight.
9. heat-resistant electrostatic superhigh molecular weight polyethylene fibers according to claim 1 and 2 and preparation method thereof, it is characterized in that: described antioxidant is 2, 6-di-tert-butylphenol, 2, 4, 6-tri-tert-butylphenol, 4, 4 '-thiobis (6-tertiary butyl-3-methylphenol) or four [methylene-3-(3', 5 '-di-tert-butyl-4 '-antelope base phenyl) propionic acid] pentaerythritol ester and triphenyl phosphite, tricresyl phosphite (2, 4-di-tert-butyl phenyl) ester, the different monooctyl ester of tricresyl phosphite or tricresyl phosphate benzene methyl or dilauryl thiodipropionate, one or more of thio-2 acid bay octadecyl ester or thio-2 acid two (13 ester), consumption is 0.1% ~ 1% of ultra-high molecular weight polyethylene powder weight.
10. heat-resistant electrostatic superhigh molecular weight polyethylene fibers according to claim 2 and preparation method thereof, it is characterized in that: described crosslinking method is that X-ray or gamma-rays or electron irradiation are cross-linked, or be ultraviolet irradiation or infrared irridiation crosslinked, and other high-energy ray irradiations are cross-linked or one or several combination in hot cross-linking radiation.
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