CN108277546A - A kind of preparation method of anti-cutting polyethylene fibre - Google Patents
A kind of preparation method of anti-cutting polyethylene fibre Download PDFInfo
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- CN108277546A CN108277546A CN201810094661.3A CN201810094661A CN108277546A CN 108277546 A CN108277546 A CN 108277546A CN 201810094661 A CN201810094661 A CN 201810094661A CN 108277546 A CN108277546 A CN 108277546A
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- Prior art keywords
- cutting
- polyethylene fibre
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- fibre
- polyethylene
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Classifications
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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
Abstract
The invention discloses a kind of preparation methods of anti-cutting polyethylene fibre, include the following steps：Ultra-high molecular weight polyethylene and silica are mixed to get mixed raw material；Mixed raw material is added in twin-screw extruding strings device and carries out spinning, forms precursor；Precursor is extracted, dry and ultra-drawing obtains anti-cutting polyethylene fibre.Reach 7.84 or more according to Europe superscript EN388 tests with the anti-cutting grade of its manufactured fabric, present invention process flow is simple, reduce production cost, large-scale production can be achieved, and preferable belt cutting-resisting property can be reached by not needing other compound hard fibres, improve the comfort level of fibre.
Description
Technical field
The invention belongs to high-performance fiber fields, and in particular to a kind of preparation method of anti-cutting polyethylene fibre.
Background technology
Ultra-high molecular weight polyethylene (Ultra-highMolecular Polyethylene, abbreviation UHMWPE) fiber is also referred to as
High-strength high-modulus polyethylene fiber or elongation chain (ECPE) polyethylene fibre, it is by relative molecular mass at (1-6) × 106It is poly-
Ethylene obtains after spinning, super drawing.Superhigh molecular weight polyethylene fibers composite material has compared with other fibre reinforced composites
There are lighter quality, better dielectricity and impact resistance, is therefore widely used in aerospace, marine site defence, weapon dress
It is standby to wait fields.
To prevent sharp object from encroaching on, especially under hypervelocity movement, emergency event context, a kind of high anti-cutting is needed
Property fiber and its knitting (such as various military-civil facilities, clothing, trick set) research and development be constantly subjected to looking steadily for domestic and international industry
Mesh.
Currently, the high-strength high-modulus polyethylene fiber for being mainly used in military shellproof series of products in the market is obtained in civil field
Great popularization, such as the fabric of anti-stab anti-cutting fabric are arrived.But single high-tenacity polyethylene fibre production fabric is anti-
Cutting performance can only achieve the secondary standard of Europe superscript EN388.Manufacturer generally adopts to further increase the anti-cutting performance of fabric
It is first coated with polyethylene fibre and glass fibre or stainless steel, then makes fabric.
CN102828312A discloses a kind of Cut-resistant core-spun yarn, including outer layer fiber and is wrapped up by cored technique
Core fiber, core fiber are the one or more of continuous glass fibre, basalt filament or steel wire long filament；Outer layer fiber is aramid fiber
The short fine either short fibre of polyethylene is the short fine composite fibre mixed with arbitrary proportion of the short fine and polyethylene of aramid fiber.
CN102277669A discloses cut resistant yarn, manufactures the method for the yarn and the product containing the yarn, the cut resistant
Yarn includes silk thread and/or staple fibre, and the silk thread and/or the staple fibre include the cutting resistance for improving yarn
Hard component, the hard fibre by glass, mineral or metal be made either carbon fiber.Above-mentioned two patent is all from raw material
Upper consideration improves the anti-cutting of fiber, using the high strength fibres such as High molecular weight polyethylene and inorganic metal or glass with core/skin
Compound fibre is formed, or coated by high-elasticity fiber, reach the target for improving cutting resistance in such a way that hard mineral powder coats, but
Cause body-sensing to be hardened because inorganic metal, glass fibers class is added, reduces comfort.
Patent CN201610961601.8 discloses a kind of superhigh molecular weight polyethylene fibers of cut resistant, preparation side
Ultra-high molecular weight polyethylene powder addition solvent is carried out swelling and forms spinning slurry by method and its application, described in when swelling is added
Rod-like particle is mixed；The spinning slurry is dissolved into spinning solution by double screw extruder；By the spinning solution
Solution strand is formed by static mixer, filter, metering pump and filament spinning component, nascent gelatine silk is obtained into condensation bath；
The runner of the filament spinning component is at least partly gradually reduced from inlet to exit；The nascent gelatine silk through solvent extraction,
It is wound after dry and hot-stretch.The invention addition inorganic crystal whisker, silica or organic fiber powder in swelling, need to add
Enter a large amount of white oil and make solvent, production cost is higher, and the production cycle is longer, and also not environmentally.
Invention content
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of preparation side of anti-cutting polyethylene fibre
Method, it is simple for process, it is pollution-free, to equipment without particular/special requirement, produce and process at low cost, industrialized production easy to implement.
Based on above-mentioned purpose, the preparation method of anti-cutting polyethylene fibre provided by the invention includes the following steps：
A, ultra-high molecular weight polyethylene and silica are mixed to get mixed raw material；
B, mixed raw material is added in twin-screw extruding strings device and carries out spinning, form precursor；
C, precursor is extracted, dry and ultra-drawing obtains anti-cutting polyethylene fibre.
Preferably, it is mixed using stirring in the step a, mixing speed 60-85r/min.
Preferably, the weight of silica is ultra-high molecular weight polyethylene weight 1-40% in the step a.
Preferably, the molecular weight of ultra-high molecular weight polyethylene is more than 3,000,000 in the step a.
Preferably, the spinning temperature in the step b is 100-320 DEG C.
Preferably, the extractant extracted in the step c is the alkane halogenated hydrocarbons or fragrance that carbon chain lengths are less than 10
Hydrocarbon.
Preferably, the extractant extracted in the step c is n-hexane, carbon tetrachloride or dichloromethane.
Preferably, hot-stretch is stretched as in the step c, draft temperature is 120-150 DEG C, 25-45 times of draw ratio.
The present invention also provides the anti-cutting polyethylene fibre prepared according to above-mentioned preparation method, the obtained poly- second of anti-cutting
Alkene fibre strength and modulus are higher, and filament strength is in 13-24g/d, modulus 500-940g/d, elongation at break 3.0-
3.5%.
The present invention also provides a kind of anti-cutting fabrics that anti-cutting polyethylene fibre is prepared.
The invention has the advantages that present invention process is simple, a large amount of human and material resources are not needed, to equipment without special
It is required that producing and processing at low cost, industrialized production easy to implement.The anti-cutting of anti-cutting polyethylene fiber peacekeeping provided by the invention is knitted
Object introduces the silica into superhigh molecular weight polyethylene fibers so that superhigh molecular weight polyethylene fibers need not answer again
Preferable anti-cutting performance can be reached by closing other hard fibres, and the pliability and comfort level of gained fabric improve, and dioxy
SiClx is directly mixed with ultra-high molecular weight polyethylene, need not be heated and added with solvent, be greatly reduced energy consumption, shorten life
The period is produced, is economized on resources, the requirement of environmental protection is also reached, fabric made of the anti-cutting polyethylene fibre with gained, anti-cutting
Grade reaches 7.84 or more according to Europe superscript EN388 tests.
Interlamellar spacing between silicon dioxide molecules can allow the polyethylene molecular chain of super high molecular weight to be inserted into, silica-based
Filler material plays a protective effect to ultra-high molecular weight polyethylene while improving softening temperature and mechanical performance, and it is fine to reach raising
Tie up the purpose of anti-cutting performance.
Specific implementation mode
Embodiment 1
It is 3 × 10 by molecular weight6The polyethylene powders 8kg of g/mol, silica-based filler material 0.08kg are stirred at normal temperatures
Mixing is mixed, mixing speed 70r/min obtains mixed raw material.Mixed raw material is injected into blending extrusion in twin-screw extruding strings device, is squeezed
Go out liquid and obtain precursor through spinneret orifice ejection postcooling, the highest temperature that double screw extruder is controlled during blending extrusion is 260 DEG C.
Gained precursor is extracted after carrying out 1.5 times of preliminary drafts with extractant, and then the dry 0.5h at 40 DEG C, finally carries out super drawing,
Draft temperature is 145 DEG C, and anti-cutting polyethylene fibre is obtained after 40 times of stretchings.
Embodiment 2
It is 3 × 10 by molecular weight6The polyethylene powders 6kg of g/mol, silica-based filler material 0.8kg are stirred at normal temperatures
Mixing is mixed, mixing speed 60r/min obtains mixed raw material.Mixed raw material is injected into blending extrusion in twin-screw extruding strings device, is squeezed
Go out liquid and obtain precursor through spinneret orifice ejection postcooling, the highest temperature that double screw extruder is controlled during blending extrusion is 260 DEG C.
Gained precursor is extracted after carrying out 1.5 times of preliminary drafts with extractant, and then the dry 0.5h at 40 DEG C, finally carries out super drawing,
Draft temperature is 120 DEG C, and anti-cutting polyethylene fibre is obtained after 25 times of stretchings.
Embodiment 3
It is 3 × 10 by molecular weight6The polyethylene powders 6kg of g/mol, silica-based filler material 1.2kg are stirred at normal temperatures
Mixing is mixed, mixing speed 85r/min obtains mixed raw material.Mixed raw material is injected into blending extrusion in twin-screw extruding strings device, is squeezed
Go out liquid and obtain precursor through spinneret orifice ejection postcooling, the highest temperature that double screw extruder is controlled during blending extrusion is 320 DEG C.
Gained precursor is extracted after carrying out 1.5 times of preliminary drafts with extractant, and then the dry 0.5h at 40 DEG C, finally carries out super drawing,
Draft temperature is 145 DEG C, and anti-cutting polyethylene fibre is obtained after 30 times of stretchings.
Embodiment 4
It is 3 × 10 by molecular weight6The polyethylene powders 6kg of g/mol, silica-based filler material 2.4kg are stirred at normal temperatures
Mixing is mixed, mixing speed 85r/min obtains mixed raw material.Mixed raw material is injected into blending extrusion in twin-screw extruding strings device, is squeezed
Go out liquid and obtain precursor through spinneret orifice ejection postcooling, the highest temperature that double screw extruder is controlled during blending extrusion is 100 DEG C.
Gained precursor is extracted after carrying out 1.5 times of preliminary drafts with extractant, and then the dry 0.5h at 40 DEG C, finally carries out super drawing,
Draft temperature is 150 DEG C, and anti-cutting polyethylene fibre is obtained after 45 times of stretchings.
Comparative example 1
It is 3 × 10 by molecular weight6Blending extrusion in the polyethylene powders 6kg injection twin-screw extruding strings devices of g/mol, extrusion liquid
Postcooling is sprayed through spinneret orifice and obtains precursor, and the highest temperature that double screw extruder is controlled during blending extrusion is 260 DEG C.Gained
Precursor is extracted after carrying out 1.5 times of preliminary drafts with extractant, and then the dry 0.5h at 40 DEG C, finally carries out super drawing, stretch
Temperature is 145 DEG C, and anti-cutting polyethylene fibre is obtained after 40 times of stretchings.
Comparative example 2
Buy the superhigh molecular weight polyethylene fibers of Guangdong Te Weilong new material applications Co., Ltd production.
Comparative example 3
It is 3 × 10 by molecular weight6It is molten that the polyethylene powders of g/mol are mixed in progress in white oil (mass concentration 8.3%)
Swollen spinning slurry, when swelling, are additionally added SiO 2 powder, and the quality of silica is the 7% of polyethylene quality, by gained
The metered double screw extruder of swelling spinning slurry in dissolve, using filter, metering pump, spinning pack and water cooling tank
Form gelatine silk of coming into being；The temperature of double screw extruder is 280 DEG C, and gained comes into being gelatine silk through appropriate storage period (about 24-
It is wound after solvent extraction, drying, hot-stretch in rear spinning process after 48h), hot-stretch drafting multiple is 30-50 times, obtains poly- second
Alkene fiber.
Cloth or gloves are made in the polyethylene fibre of polyethylene fiber peacekeeping obtained commercially, its is tested and resistance to cuts
Cut performance.According to European standard EN388, using cut resistant testing machine, its belt cutting-resisting property is tested.
By the physics of anti-cutting polyethylene fibre and the obtained polyethylene fibres of documents 1-3 made from embodiment 1-4
Performance comparison, as a result such as table 1.
The performance of 1 polyethylene fibre of table and its fabric compares
Data can be seen that tensile strength and the stretching of the polyethylene fibre obtained by method using the present invention from upper table
Modulus is both less than comparative example 1,2 gained polyethylene fibres, and with the increase of silica addition, polyethylene fibre
Tensile strength and stretch modulus all reduce, and gained fabric is tested by EN388 methods, and the belt cutting-resisting property of fabric is than comparative example 1,2
Improve 80% or more, preferably improve 250%, and compared with comparative example 3, the present invention gained cut resistant polyethylene fibre and its
The performance of fabric is all not much different, and the anti-cutting performance of preferred polyethylene fibre performance and its fabric is better than comparative example 3, but
Low energy consumption for the preparation method of the present invention, does not add organic solvent, economizes on resources, and reduces production cost, also reduces the dirt to environment
Dye.
Claims (8)
1. a kind of preparation method of anti-cutting polyethylene fibre, which is characterized in that include the following steps：
A, ultra-high molecular weight polyethylene and silica are mixed to get mixed raw material；
B, mixed raw material is added in twin-screw extruding strings device and carries out spinning, form precursor；
C, precursor is extracted, dry and ultra-drawing obtains anti-cutting polyethylene fibre.
2. the preparation method of anti-cutting polyethylene fibre as described in claim 1, it is characterised in that：It is used in the step a
Stirring is mixed, mixing speed 60-85r/min.
3. the preparation method of anti-cutting polyethylene fibre as described in claim 1, it is characterised in that：Dioxy in the step a
The weight of SiClx is ultra-high molecular weight polyethylene weight 1-40%.
4. the preparation method of anti-cutting polyethylene fibre as described in any one of claims 1-3, it is characterised in that：The step
The molecular weight of ultra-high molecular weight polyethylene is more than 3,000,000 in a.
5. the preparation method of anti-cutting polyethylene fibre as described in any one of claims 1-3, it is characterised in that：The step
Spinning temperature in b is 100-320 DEG C.
6. the preparation method of anti-cutting polyethylene fibre as described in any one of claims 1-3, it is characterised in that：The step
The extractant extracted in c is the alkane halogenated hydrocarbons or aromatic hydrocarbon that carbon chain lengths are less than 10.
7. the preparation method of anti-cutting polyethylene fibre as claimed in claim 7, it is characterised in that：It is carried out in the step c
The extractant of extraction is n-hexane, carbon tetrachloride or dichloromethane.
8. the preparation method of anti-cutting polyethylene fibre as described in any one of claims 1-3, it is characterised in that：The step
Hot-stretch is stretched as in c, draft temperature is 120-150 DEG C, 25-45 times of draw ratio.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110987578.0A CN113529200A (en) | 2018-01-31 | 2018-01-31 | Preparation method of anti-cutting polyethylene fiber |
| CN201810094661.3A CN108277546A (en) | 2018-01-31 | 2018-01-31 | A kind of preparation method of anti-cutting polyethylene fibre |
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| CN201810094661.3A CN108277546A (en) | 2018-01-31 | 2018-01-31 | A kind of preparation method of anti-cutting polyethylene fibre |
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| CN202110987578.0A Division CN113529200A (en) | 2018-01-31 | 2018-01-31 | Preparation method of anti-cutting polyethylene fiber |
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| CN202110987578.0A Pending CN113529200A (en) | 2018-01-31 | 2018-01-31 | Preparation method of anti-cutting polyethylene fiber |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110117829A (en) * | 2019-05-07 | 2019-08-13 | 山东莱威新材料有限公司 | A method of ultra high molecular weight polyethylene fiber is extracted with dichloromethane |
| CN112227070A (en) * | 2020-10-21 | 2021-01-15 | 宁波帕罗玛防坠落装备有限公司 | Modified polyester fiber woven tape and preparation method thereof |
| CN112442753A (en) * | 2020-10-28 | 2021-03-05 | 中石化南京化工研究院有限公司 | Preparation method of novel anti-cutting material |
| CN112779623A (en) * | 2020-09-17 | 2021-05-11 | 安丹达工业技术(上海)有限公司 | Composition for cutting-resistant fiber, application and preparation method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110117829A (en) * | 2019-05-07 | 2019-08-13 | 山东莱威新材料有限公司 | A method of ultra high molecular weight polyethylene fiber is extracted with dichloromethane |
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| CN112779623B (en) * | 2020-09-17 | 2022-03-15 | 安丹达工业技术(上海)有限公司 | Composition for cutting-resistant fiber, application and preparation method |
| CN112227070A (en) * | 2020-10-21 | 2021-01-15 | 宁波帕罗玛防坠落装备有限公司 | Modified polyester fiber woven tape and preparation method thereof |
| CN112227070B (en) * | 2020-10-21 | 2022-11-11 | 宁波帕罗玛防坠落装备有限公司 | Modified polyester fiber woven tape and preparation method thereof |
| CN112442753A (en) * | 2020-10-28 | 2021-03-05 | 中石化南京化工研究院有限公司 | Preparation method of novel anti-cutting material |
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