CN109629028A - A kind of graphene ultra-high molecular weight polyethylene composite fibre and preparation method thereof - Google Patents

A kind of graphene ultra-high molecular weight polyethylene composite fibre and preparation method thereof Download PDF

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Publication number
CN109629028A
CN109629028A CN201811356695.1A CN201811356695A CN109629028A CN 109629028 A CN109629028 A CN 109629028A CN 201811356695 A CN201811356695 A CN 201811356695A CN 109629028 A CN109629028 A CN 109629028A
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molecular weight
graphene
high molecular
polyethylene
composite fibre
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沙嫣
沙晓林
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Nantong Johnson Security Polytron Technologies Inc
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Nantong Johnson Security Polytron Technologies Inc
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Priority to CN201811356695.1A priority Critical patent/CN109629028A/en
Priority to PCT/CN2018/117970 priority patent/WO2020097985A1/en
Publication of CN109629028A publication Critical patent/CN109629028A/en
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Artificial Filaments (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The present invention provides a kind of graphene ultra-high molecular weight polyethylene composite fibres and preparation method thereof, and the composite fibre includes following components: polyethylene, reinforcement, dispersing agent, antioxidant；The weight ratio of the polyethylene, reinforcement are as follows: 20~25:1.5~4.5；The reinforcement is hard fibre and graphene.The present invention is added in ultra-high molecular weight polyethylene by mixing hard fibre with graphene; it obtains with high intensity, cut resistant, improve puncture-resistant and ultra-high molecular weight polyethylene composite fibre resistant to high temperature; especially anti-cut grade reaches 5 grades of Unite States Standard; it is mainly used in the wear-resisting textile of various anti-cuts; such as rotary hose woven cloth, cable, optical cable external protection woven cloth, the Safety protectors and sports harness, civilian functional textile etc. such as the anti-cutting gloves in personal protection field, anti-cutting oversleeve, protective clothes, protective footwear, cap, apron.

Description

A kind of graphene ultra-high molecular weight polyethylene composite fibre and preparation method thereof
Technical field
The present invention relates to polyethylene fibre technical fields, specifically, being related to a kind of graphene ultra-high molecular weight polyethylene Composite fibre and preparation method thereof.
Background technique
Ultra high molecular weight polyethylene fiber is one of three big high technical fibres, is the specific strength highest commercially produced Fiber, be mainly used in the fields such as security protection, aviation, weapons, sport.Ultra-high molecular weight polyethylene (Ultra- HighMolecular Polyethylene, abbreviation UHMWPE) refer to the linear polyethylene that weight average molecular weight is greater than 1,500,000.Its Chain structure is typical linear structure, and branch is few, and well below common polythene, branch point is less than 1/1000, macromolecular Chain overlength reaches tens of thousands of nanometers, therefore is the ideal material for preparing flexible chain high strength fibre.It is special to prevent sharp object from encroaching on It is not to need a kind of high anti-cutting fiber and its knitting (such as various the army and the people in hypervelocity movement, under emergency event context With facility, clothing, trick set etc.) research and development be constantly subjected to attracting attention for domestic and international industry.
A kind of cut resistant ultra-high molecular weight polyethylene composite fibre is disclosed in patent CN106149085A, by supra polymer Weight northylen and inflatable organosilicate clay, modified graphene, antioxidant are constituted.By inflatable organosilicate, graphite Alkene is introduced into ultra high molecular weight polyethylene fiber, so that ultra high molecular weight polyethylene fiber no longer needs to other compound hard fibres Good belt cutting-resisting property can be reached, belt cutting-resisting property reaches 5 grades of Europe superscript (being equivalent to 3 grades of American Standard).
A kind of cut resistant ultra high molecular weight polyethylene fiber, including super high molecular weight are disclosed in patent CN106555244A Polyethylene fibre；The hard fibre being dispersed in the ultra high molecular weight polyethylene fiber；The ultra-high molecular weight polyethylene is fine The mass ratio of peacekeeping hard fibre is 100:(2~8).The patent is improved in preparation process by control hard fibre content The tensile viscosity of spinning solution, to further improve the mechanical property of finished fiber, obtained finished fiber is with higher Intensity, while elongation at break is high and broken end number is low, belt cutting-resisting property reaches 5 grades of Europe superscript (being equivalent to 3 grades of American Standard).
A kind of cut resistant ultra high molecular weight polyethylene fiber, including super high molecular weight are disclosed in patent CN106555245A Polyethylene fibre；The hard fibre and solvent naphtha being dispersed in the ultra high molecular weight polyethylene fiber；The super high molecular weight The mass ratio of polyethylene fibre, hard fibre and solvent naphtha is 100:(3~6): (0.3~2).The patent is by solvent naphtha to hard The immersional wetting of matter fiber keeps hard fibre preferably compatible with ultra-high molecular weight polyethylene, meanwhile, the addition of solvent naphtha is advantageous In hard fibre being uniformly distributed in ultra-high molecular weight polyethylene, make finished fiber elongation at break with higher, it is resistance to Cutting performance reaches 5 grades of Europe superscript (being equivalent to 3 grades of American Standard).
A kind of cut resistant ultra high molecular weight polyethylene fiber, including super high molecular weight are disclosed in patent CN106555247A Polyethylene fibre；The hard fibre and iron powder being dispersed in the ultra high molecular weight polyethylene fiber；The super high molecular weight is poly- The mass ratio of vinyl fiber, hard fibre and iron powder is 100:(3~6): (0.01~0.05).This patent passes through iron powder and hard Fiber interaction can be improved the intensity of finished fiber；Meanwhile the addition of iron powder is conducive to hard fibre in super high molecular weight Being uniformly distributed in polyethylene makes finished fiber have lower change rate of strength, improves the quality stability of finished fiber, Belt cutting-resisting property reaches 5 grades of Europe superscript (being equivalent to 3 grades of American Standard).
A kind of cut resistant ultra high molecular weight polyethylene fiber, including super high molecular weight are disclosed in patent CN106555243A Polyethylene fibre；The hard fibre and hard fibre slag being dispersed in the ultra high molecular weight polyethylene fiber；The superelevation The mass ratio of molecular weight polyethylene fiber, hard fibre and hard fibre slag is 100:(3~6): (0.001~0.18).This Patent makes hard fibre be more evenly distributed in ultra-high molecular weight polyethylene by the way that hard fibre slag is added, to keep finished product fine Intensity homogeneity with higher is tieed up, while improving the rub resistance of finished fiber, belt cutting-resisting property reaches 5 grades of (phases of Europe superscript When in 3 grades of American Standard).
However, the hot melt for the ultra high molecular weight polyethylene fiber that above-mentioned patent obtains is not strong, do not have preferable resistance to height Warm nature energy, and Main Physical Characteristics --- anti-cut performance highest also can only achieve 5 grades of Europe superscript (being equivalent to 3 grades of levels of American Standard).
Summary of the invention
In view of the drawbacks of the prior art, the object of the present invention is to provide a kind of compound fibres of graphene ultra-high molecular weight polyethylene Dimension and preparation method thereof.The anti-cut performance that composite fibre is prepared in the present invention reaches 5 grades of levels of American Standard, and high temperature resistant, resistance to Puncture resistance is enhanced.
The purpose of the present invention is what is be achieved through the following technical solutions:
The present invention provides a kind of graphene ultra-high molecular weight polyethylene composite fibres, including following components: polyethylene, increasing Qiang Ti, dispersing agent, antioxidant；The weight ratio of the polyethylene, reinforcement are as follows: 20~25:1.5~4.5；
The reinforcement is hard fibre and graphene.
Preferably, weight percent of the graphene in composite fibre is 1 ‰~1%.More preferable ratio is 6 ‰~ 8‰。
Preferably, the graphene is single layer or few layer graphene, modified graphene, at least one in graphene oxide Kind.
Preferably, the modified graphene be using cetyl trimethylammonium bromide, hexadecyltrimethylammonium chloride, Dodecyl benzyl dimethyl ammonium chloride, the third alkyl dimethyl ammonium chloride of polydiene base, dodecyldimethyl ammonium oxide, dodecyl One of the double stearate methylsulfuric acid methyl esters amine of amine acetate, triacetamide modifying agent and n-dodecane ethyl triethoxy silicane Alkane, dodecyl trimethoxy silane, γ-glycidyl ether oxygen propyl trimethoxy silicane, γ-(methacryloxypropyl) third One of base trimethoxy silane, aminopropyl-triethoxy vinyl silanes, 3- aminopropyl trimethoxysilane modifying agent changes The graphene of property.
Preferably, the diameter of the hard fibre is 2~10 microns, and length is 20~100 microns.
Preferably, the hard fibre includes: carbon fiber, further includes basalt fibre, glass fibre, ceramic fibre, carbon At least one of SiClx；The more preferable hard fibre includes: carbon fiber or carbon fiber and basalt fibre and/or glass The compound of fiber.
It is highly preferred that in the hard fibre, carbon fiber: the quality of basalt fibre and/or glass fibre be 1:0.5~ 1。
Most preferably, in the hard fibre, the mass ratio of basalt fibre and glass fibre is 2~3:1.
Preferably, the polyethylene is ultra-high molecular weight polyethylene, and molecular weight is 1 × 106~8 × 106；
Preferably, the dispersing agent is hard hydrochlorate, zinc stearate, hexenyl bis-stearamides, oleic acid acyl, polyethylene Wax, polyethylene glycol；The additive amount of dispersing agent is the 0.01~1% of composite fibre total weight.
Preferably, the antioxidant be BASF B-215,2,6- di-tert-butylphenol, 2,4,6- tri-tert-butylphenols or One of triphenyl phosphite；The additive amount of antioxidant is the 0.01~1% of composite fibre total weight.
The present invention also provides a kind of preparation methods of graphene ultra-high molecular weight polyethylene composite fibre, including following step It is rapid:
A, polyethylene is added in white oil solvent, dissolves and be uniformly dispersed at 50~100 DEG C, obtains the first mixed liquor；
B, according to the proportion, modified graphene, hard fibre, dispersing agent, antioxidant are mixed evenly, then with first Mixed liquor mixing, obtains polyethylene spinning solution；
C, polyethylene spinning solution is added into twin screw compounder, obtains precursor by extrusion, is cooled to gel State stands the internal stress of removal precursor, and through preliminary draft, extraction, heating drawing-off and coiling and molding process to get the compound fibre Dimension；
In step A, the solvent is white oil；The weight ratio of the polyethylene and solvent are as follows: 20~25:250~350.
The solvent being added in step A of the invention, will remove substantially in subsequent processes, therefore gained composite fibre In it is almost solvent-free.
Compared with prior art, the present invention have it is following the utility model has the advantages that
The present invention is added in ultra-high molecular weight polyethylene by mixing hard fibre with graphene, wherein hard fibre Be added can reinforcing fiber anti-cut and paracentesis resistance, but low-fiber mechanical strength (i.e. tensile strength) can drop, and graphite Alkene material be added can reinforcing fiber tensile strength and heat resistance, be added by hard fibre and grapheme material compounding to PE In resin, the effect of collaboration enhancing ultra-high molecular weight polyethylene composite fibre can reach, can get and cut with high-intensitive, resistance to It cuts, improve the ultra-high molecular weight polyethylene composite fibre of puncture-resistant and the resistance to temperature difference, especially anti-cut grade reaches 5 grades of American Standard, It is mainly used in the wear-resisting textile of various anti-cuts, such as rotary hose woven cloth, cable, optical cable external protection woven cloth, a people's air defense The Safety protectors such as the anti-cutting gloves in protector for collar domain, anti-cutting oversleeve, protective clothes, protective footwear, cap, apron and sports dress Tool, civilian functional textile etc..
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention Protection scope.
In following embodiment, the modified graphene used is using cetyl trimethylammonium bromide, cetyl front three Ammonium chloride, dodecyl benzyl dimethyl ammonium chloride, the third alkyl dimethyl ammonium chloride of polydiene base, dodecyl dimethyl oxidation One of the double stearate methylsulfuric acid methyl esters amine of ammonium, lauryl amine acetate, triacetamide modifying agent and n-dodecane Ethyl triethoxy silicane alkane, dodecyl trimethoxy silane, γ-glycidyl ether oxygen propyl trimethoxy silicane, γ-(first Base acryloyl-oxy) propyl trimethoxy silicane, ammonia soldier's base Triethoxyvinylsilane, in 3- aminopropyl trimethoxysilane A kind of graphene of modifier modification.
For the diameter of the hard fibre used for 2~10 microns, length is 20~100 microns.
The hard fibre of use includes: the compound of carbon fiber or carbon fiber and basalt fibre and/or glass fibre.
For the polyethylene used for ultra-high molecular weight polyethylene, molecular weight is 1 × 106~8 × 106；
The solvent used is white oil.
The dispersing agent used is hard hydrochlorate, zinc stearate, hexenyl bis-stearamides, oleic acid acyl, polyethylene wax, poly- second Glycol；The additive amount of dispersing agent is the 0.01~1% of composite fibre total weight.
The antioxidant used is BASF B-215,2,6- di-tert-butylphenol, 2,4,6- tri-tert-butylphenols or phosphorous acid One of triphenylmethyl methacrylate；The additive amount of antioxidant is the 0.01~1% of composite fibre total weight.
Embodiment 1
Component and the content for present embodiments providing a kind of polyethylene composite fibre are as shown in table 2, the preparation method packet Include following steps:
A, it selects in polyvinyl resin with super-high molecular weight and is added in white oil, by being stirred at 50~100 DEG C to being uniformly dispersed, Obtain the first mixed liquor；
It B, according to the proportion, will be combined modified using cetyl trimethylammonium bromide and dodecyl trimethoxy silane Graphene, hard fibre, dispersing agent, antioxidant, high mixer high speed is added and stirs to being uniformly dispersed, and with the first mixed liquor It is mixed, obtains ultra-high molecular weight polyethylene spinning solution；
C, ultra-high molecular weight polyethylene spinning solution is added into twin screw compounder, passes through spinneret at a certain temperature Plate squeezes out to obtain precursor, gel state is cooled to rapidly in coolant liquid (10 DEG C of coolant liquid or less), using standing (when standing Between at least 20 hours) internal stress of removal precursor, and through preliminary draft, extraction, heating drawing-off and coiling and molding process are to get described Composite fibre.
Embodiment 2
Component and the content for present embodiments providing a kind of polyethylene composite fibre are as shown in table 2, the preparation method packet Include following steps:
A, it selects in polyvinyl resin with super-high molecular weight and is added in white oil, be uniformly dispersed, obtained by 50~100 DEG C of dissolutions First mixed liquor；
B, according to the proportion, will be joined using dodecyl benzyl dimethyl ammonium chloride and aminopropyl-triethoxy vinyl silanes Modified graphene, hard fibre, dispersing agent, antioxidant are closed, the stirring of high mixer high speed is added, and carry out with the first mixed liquor Mixing, obtains ultra-high molecular weight polyethylene spinning solution；
C, ultra-high molecular weight polyethylene spinning solution is added into twin screw compounder, passes through spinneret at a certain temperature Plate squeezes out to obtain precursor, gel state is cooled to rapidly in coolant liquid (10 DEG C of coolant liquid or less), using standing (when standing Between at least 24 hours) internal stress of removal precursor, and through preliminary draft, extraction, heating drawing-off are to get the composite fibre.
Embodiment 3
Component and the content for present embodiments providing a kind of polyethylene composite fibre are as shown in table 2, the preparation method packet Include following steps:
A, it selects in polyvinyl resin with super-high molecular weight and is added in white oil, be uniformly dispersed, obtained by 50~100 DEG C of dissolutions First mixed liquor；
It B, according to the proportion, will be combined modified using cetyl trimethylammonium bromide and dodecyl triethoxysilane Graphene, hard fibre, dispersing agent, antioxidant, the stirring of high mixer high speed is added, and is mixed with the first mixed liquor, Obtain ultra-high molecular weight polyethylene spinning solution；
C, ultra-high molecular weight polyethylene spinning solution is added into twin screw compounder, passes through spinneret at a certain temperature Plate squeezes out to obtain precursor, gel state is cooled to rapidly in coolant liquid (10 DEG C of coolant liquid or less), using standing (when standing Between at least 24 hours) internal stress of removal precursor, and through preliminary draft, extraction, heating drawing-off are to get the composite fibre.
Embodiment 4
Component and the content for present embodiments providing a kind of polyethylene composite fibre are as shown in table 2, the preparation method packet Include following steps:
A, it selects in polyvinyl resin with super-high molecular weight and is added in white oil, be uniformly dispersed, obtained by 50-100 DEG C of dissolution First mixed liquor；
It B, according to the proportion, will be combined modified using cetyl trimethylammonium bromide and dodecyl trimethoxy silane Graphene, hard fibre, dispersing agent, antioxidant, the stirring of high mixer high speed is added, and is mixed with the first mixed liquor, Obtain ultra-high molecular weight polyethylene spinning solution；
C, ultra-high molecular weight polyethylene spinning solution is added into twin screw compounder, passes through spinneret at a certain temperature Plate squeezes out to obtain precursor, gel state is cooled to rapidly in coolant liquid (10 DEG C of coolant liquid or less), using standing (when standing Between at least 24 hours) internal stress of removal precursor, and through preliminary draft, extraction, heating drawing-off are to get the composite fibre.
Embodiment 5
Component and the content for present embodiments providing a kind of polyethylene composite fibre are as shown in table 2, the preparation method with Embodiment 4 is identical.
Embodiment 6
Component and the content for present embodiments providing a kind of polyethylene composite fibre are as shown in table 2, the preparation method with Embodiment 4 is identical.
Embodiment 7
Component and the content for present embodiments providing a kind of polyethylene composite fibre are as shown in table 2, the preparation method with Embodiment 4 is identical.
Embodiment 8
Component and the content for present embodiments providing a kind of polyethylene composite fibre are as shown in table 2, the preparation method with Embodiment 4 is identical.
Embodiment 9
Component and the content for present embodiments providing a kind of polyethylene composite fibre are as shown in table 2, the preparation method with Embodiment 4 is identical.
Embodiment 10
Component and the content for present embodiments providing a kind of polyethylene composite fibre are as shown in table 2, the preparation method with Embodiment 4 is identical.
Embodiment 11
Component and the content for present embodiments providing a kind of polyethylene composite fibre are as shown in table 2, the preparation method with Embodiment 4 is identical.
Embodiment 12
Component and the content for present embodiments providing a kind of polyethylene composite fibre are as shown in table 2, the preparation method with Embodiment 4 is identical.
Embodiment 13
Component and the content for present embodiments providing a kind of polyethylene composite fibre are as shown in table 2, the preparation method with Embodiment 1 is identical.
Embodiment 14
Component and the content for present embodiments providing a kind of polyethylene composite fibre are as shown in table 2, the preparation method with Embodiment 1 is identical.
Table 1
Table 2
Embodiment 15
A kind of polyethylene composite fibre is present embodiments provided, the component and content are substantially the same manner as Example 1, different Place is only that: for the graphene that the present embodiment uses for single-layer graphene, the preparation method is same as Example 1.
Embodiment 16
A kind of polyethylene composite fibre is present embodiments provided, the component and content are substantially the same manner as Example 1, different Place is only that: for the graphene that the present embodiment uses for graphene oxide, the preparation method is same as Example 1.
Comparative example 1
This comparative example provides a kind of preparation method of polyethylene composite fibre, essentially identical with the method for embodiment 1, no It is only that with place: in this comparative example, not adding graphene.
Comparative example 2
This comparative example provides a kind of preparation method of polyethylene composite fibre, essentially identical with the method for embodiment 1, no Be only that with place: in this comparative example, the hard fibre used is organobentonite.
Compliance test result:
Cloth or gloves is made in composite fibre made from each embodiment and comparative example, according to ANSI-ISEA105:2016 beauty Target standard (as shown in table 2) tests its belt cutting-resisting property, tests its intensity using Instron type puller system, is swept using differential The method for retouching calorimetric view tests its high temperature resistance (fusing point), tests its paracentesis resistance using EN388.Test result such as 3 institute of table Show.
Table 2
Index (gram) Cut resistant grade
≥200 1
≥500 2
≥1000 3
≥1500 4
≥2200 5
≥3000 6
Table 3
By the test result of table 3 as it can be seen that the resultant effect of embodiment 7 and 8 is best, implements 4,5,11 and take second place, be followed by reality Apply example 10 and 12.And the effect of embodiment 6,9 and comparative example 1,2 is significantly worse than other all embodiments, illustrates use of the present invention Reinforcing fiber is better than other reinforcing fibers for the effect of carbon fiber or carbon fiber and basalt fibre and/or glass fibre.Implement The effect of example 15 and 16 is worse than embodiment 1, illustrates that carbon fiber preferably uses the graphene of two kinds of modifier modifications.
There are many concrete application approach of the present invention, the above is only a preferred embodiment of the present invention.More than it should be pointed out that Embodiment is merely to illustrate the present invention, and the protection scope being not intended to restrict the invention.For the common skill of the art For art personnel, without departing from the principle of the present invention, several improvement can also be made, these improvement also should be regarded as this hair Bright protection scope.

Claims (10)

1. a kind of graphene ultra-high molecular weight polyethylene composite fibre, which is characterized in that including following components: polyethylene, enhancing Body, dispersing agent, antioxidant；The weight ratio of the polyethylene, reinforcement are as follows: 20~25:1.5~4.5；
The reinforcement is hard fibre and graphene.
2. graphene ultra-high molecular weight polyethylene composite fibre according to claim 1, which is characterized in that the graphene Weight percent in composite fibre is 1 ‰~1%.
3. graphene ultra-high molecular weight polyethylene composite fibre according to claim 1 or 2, which is characterized in that the stone Black alkene is at least one of single layer or few layer graphene, modified graphene, graphene oxide.
4. graphene ultra-high molecular weight polyethylene composite fibre according to claim 3, which is characterized in that the modified stone Black alkene be using cetyl trimethylammonium bromide, hexadecyltrimethylammonium chloride, dodecyl benzyl dimethyl ammonium chloride, The double stearic acid of the third alkyl dimethyl ammonium chloride of polydiene base, dodecyldimethyl ammonium oxide, lauryl amine acetate, triacetamide One of ester methyl Methylsulfate amine modifying agent and dodecyl triethoxysilane, dodecyl trimethoxy silicon Alkane, γ-glycidyl ether oxygen propyl trimethoxy silicane, γ-(methacryloxypropyl) propyl trimethoxy silicane, aminopropyl three The graphene of one of ethoxy ethylene base silane, 3- aminopropyl trimethoxysilane modifier modification.
5. graphene ultra-high molecular weight polyethylene composite fibre according to claim 1, which is characterized in that the hard is fine The diameter of dimension is 2~10 microns, and length is 20~100 microns.
6. graphene ultra-high molecular weight polyethylene composite fibre according to claim 1, which is characterized in that the hard is fine Dimension includes: carbon fiber, further includes at least one of basalt fibre, glass fibre, ceramic fibre, silicon carbide.
7. graphene ultra-high molecular weight polyethylene composite fibre according to claim 1, which is characterized in that the polyethylene For ultra-high molecular weight polyethylene, weight average molecular weight is 1 × 106~8 × 106。
8. graphene ultra-high molecular weight polyethylene composite fibre according to claim 1, which is characterized in that the dispersing agent For hard hydrochlorate, zinc stearate, hexenyl bis-stearamides, oleic acid acyl, polyethylene wax, polyethylene glycol；The additive amount of dispersing agent It is the 0.01~1% of composite fibre total weight.
9. graphene ultra-high molecular weight polyethylene composite fibre according to claim 1, which is characterized in that the antioxidant For BASF B-215,2,6- di-tert-butylphenol, 2, one of 4,6- tri-tert-butylphenols or triphenyl phosphite；Antioxygen The additive amount of agent is the 0.01~1% of composite fibre total weight.
10. a kind of preparation method of polyethylene composite fibre according to claim 1, which is characterized in that including following step It is rapid:
A, polyethylene is added in solvent, dissolves and be uniformly dispersed at 50~100 DEG C, obtains the first mixed liquor；
B, according to the proportion, modified graphene, hard fibre, dispersing agent, antioxidant are mixed evenly, then mixed with first Liquid mixing, obtains polyethylene spinning solution；
C, polyethylene spinning solution is added into twin screw compounder, obtains precursor by extrusion, be cooled to gel state, it is quiet The internal stress of removal precursor is set, and through preliminary draft, extraction, heating drawing-off and coiling and molding process to get the composite fibre；
In step A, the solvent is white oil；The weight ratio of the polyethylene and solvent are as follows: 20~25:250~350.
CN201811356695.1A 2018-11-15 2018-11-15 A kind of graphene ultra-high molecular weight polyethylene composite fibre and preparation method thereof Pending CN109629028A (en)

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