CN103924324B - The manufacture method of skin-core structure major diameter composite monofilament - Google Patents
The manufacture method of skin-core structure major diameter composite monofilament Download PDFInfo
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- CN103924324B CN103924324B CN201410176283.5A CN201410176283A CN103924324B CN 103924324 B CN103924324 B CN 103924324B CN 201410176283 A CN201410176283 A CN 201410176283A CN 103924324 B CN103924324 B CN 103924324B
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Abstract
A kind of novel skin-core structure major diameter composite monofilament of disclosure, the core of composite monofilament is polyester (PET) resin monofilament through preliminary draft, the uniform coating thermoplastic resin material cortex in outside of core. The advantage that composite monofilament takes full advantage of each component material, namely the high tensile of polyester (PET) and dimensional stability make composite filament have higher hot strength and dimensional stability, and other thermoplastic resin clad gives the resistance to chemical corrosion required for composite filament, resistant to hydrolysis performance or other distinctive performances of this resin.
Description
Technical field
The present invention relates to a kind of advanced composite material (ACM), refer more particularly to a kind of novel skin-core structure major diameter composite monofilament and manufacture method thereof.
Background technology
New material and composite and in one of the application key area being always up China's science and technology development planning of industry and people's lives. Research and development and the industrialization of high-performance fiber and composite are supported by country as key technology area emphasis. Relevant new material and composite upgrading and energy-saving and emission-reduction to promoting the field products such as the energy, traffic, industry, the people's livelihood are significant.
The polymer general name that polyester (PET) is obtained by polyhydric alcohol and polyprotic acid polycondensation, it is a class excellent performance, broad-spectrum engineering plastics, there is excellent physical and mechanical properties in wider temperature range, life-time service temperature is up to 120 DEG C, creep resistance, fatigue durability, rub resistance, dimensional stability are all better. Polyester (PET) is the high molecular polymer that current volume of production is maximum, less costly, is widely used in national economy every field. But the resistance to chemical attack that polyester (PET) is poor and anti-hydrolytic performance limit its application in a lot of fields.
Other thermoplastic resin such as polypropylene (PP), polyamide (PA), modified poly ester (PET), polyphenylene sulfide (PPS), polyether-ether-ketone (PEEK), Meltability polytetrafluorethyletubular (PFA), Kynoar (PVDF), fluorinated ethylene propylene copolymer (FEP), ethylene tetrafluoroethylene copolymer (ETFE) and modified resin thereof etc. respectively have the physics of excellence, mechanics and chemical property, but or because of performance in a certain respect or because of relatively costly, make its application in a lot of fields be restricted equally.
Current double-component skin-core structure silk is to be melted by the thermoplastic resin of two kinds of different components simultaneously, becomes skin-core structure extrusion making through drawing-off and sizing through specific runner with spinneret direct combination. This skin-core structure silk is in a lot of product for civilian use extensive uses, but industry monofilament particularly major diameter (more than the 0.1mm) monofilament that this technique is made is unable to reach desirable physical and mechanical properties. Trace it to its cause, it is because the property differences such as different resin melt temperature, crystallinity and compatibility very big, after different component compound extruded, common wire drawing production technology cannot realize the intended physics of different component resin material, mechanical index by identical draft process;Compatible poor material, also easily produces the situation of skin-corn separation after the stretch. The industry skin-core structure composite monofilament of this explained hereafter, because adapting to different component material specific needs from process aspect, it is difficult to reach the purpose utilizing different resins characteristic to maximize favourable factors and minimize unfavourable ones.
Summary of the invention
It is an object of the invention to provide a kind of novel skin-core structure major diameter composite monofilament and manufacture method thereof, make full use of polyester (PET) and the respective advantage of thermoplastic resin, avoid its respective shortcoming, technique, adequately achieve the performance complement of each component material, make a kind of have high tensile and stability, wear-resisting and fatigue proof, there is the high-performance skin-core structure composite monofilament of relatively high performance-price ratio simultaneously.
For achieving the above object, the new technical scheme that the present invention adopts is:
A kind of novel skin-core structure major diameter composite monofilament, it is characterised in that the core of composite monofilament is polyester (PET) resin monofilament through preliminary draft, the uniform coating thermoplastic resin material cortex in outside of core.
Wherein, the core section of composite monofilament is any one in circle, ellipse or tetragon.
Wherein, the core of composite monofilament is polyester (PET) resin monofilament through preliminary draft, and draw ratio is 2-6 times.
Wherein, the thermoplastic resin of cortex is virgin resin or modified resin.
Wherein, described virgin resin includes polypropylene (PP), polyamide (PA), modified poly ester (PET), polyphenylene sulfide (PPS), polyether-ether-ketone (PEEK), Meltability polytetrafluorethyletubular (PFA), Kynoar (PVDF), fluorinated ethylene propylene copolymer (FEP), ethylene tetrafluoroethylene copolymer (ETFE).
Wherein, described modified resin is any one modified resin in polypropylene (PP), polyamide (PA), modified poly ester (PET), polyphenylene sulfide (PPS), polyether-ether-ketone (PEEK), Meltability polytetrafluorethyletubular (PFA), Kynoar (PVDF), fluorinated ethylene propylene copolymer (FEP), ethylene tetrafluoroethylene copolymer (ETFE) virgin resin.
Wherein, described modified resin is that virgin resin passes through to add following material modification and prepares:
Carbon fiber or glass fibre;
Superfine powder of polytetrafluoroethylene, titanium dioxide, carbon black powder, Paris white, nano barium sulfate powder.
Wherein, the diameter of monofilament is at 0.1-3.0mm.
For solving the problems referred to above, present invention simultaneously discloses a kind of method manufacturing above-mentioned composite monofilament, it is characterised in that mainly comprise the steps that
(1) using the polyester resin PET monofilament through preliminary draft as core, the die head by being contained in screw extruder is unreeled through weighing apparatus tension force;
(2) thermoplastic resin is melt extruded by screw extruder, is evenly distributed on outside the core filaments of constant-speed operation, and cladding forms cortex;
(3) batch through oven heat sizing after the composite filament after cladding is carried out the drawing-off again of 0-3 times by hot water storgae or hot bellows, obtain finished product composite monofilament.
Wherein, thermoplastic resin described in step (2) includes virgin resin and modified resin.
Compared with prior art, the invention have the advantage that
The advantage that composite filament takes full advantage of each component material, namely the high tensile of polyester (PET) makes composite filament have high hot strength, and other thermoplastic resin clad gives the resistance to chemical corrosion required for composite filament, resistant to hydrolysis performance or other distinctive performances of this resin. Composite monofilament keeps the excellent properties that two components all have, the shortcoming simultaneously avoiding each component; Composite filament substitutes the product made of polyester (PET) material, and is greatly improved the performance not available for the resistance to chemical attack of product and anti-hydrolytic performance or other PET with relatively low cost while keeping mechanical property.
Accompanying drawing explanation
Fig. 1 is the structural representation of the product of the explained hereafter of the present invention.
In figure, A is preliminary draft polyester (PET) monofilament sandwich layer, and B is thermoplastic resin material cortex.
Detailed description of the invention
By describing the technology contents of the present invention, structural feature in detail, being realized purpose and effect, below in conjunction with embodiment and coordinate accompanying drawing to be explained in detail.
As it is shown in figure 1, novel skin-core structure major diameter composite monofilament, the core of composite monofilament is polyester (PET) resin monofilament through preliminary draft, the uniform coating thermoplastic resin material cortex in outside of core. The core of composite monofilament is polyester (PET) resin monofilament through preliminary draft, and draw ratio is 2-6 times, and the section of core is any one in circle, ellipse or tetragon. The diameter of monofilament is preferably in 0.1-3.0mm.
Each component material ratio of composite filament can need adjustment by what apply, the draw ratio of polyester (PET) core filaments of preliminary draft can arbitrarily set 2-6 times of scope on demand, cortex is closely uniformly coated on outside core filaments, determines whether drawing-off and drawing-off amount on demand.
In the present embodiment, the cortex of monofilament is thermoplastic resin, including virgin resin or modified resin, virgin resin can be polypropylene (PP), polyamide (PA), modified poly ester (PET), polyphenylene sulfide (PPS), polyether-ether-ketone (PEEK), Meltability polytetrafluorethyletubular (PFA), Kynoar (PVDF), fluorinated ethylene propylene copolymer (FEP), ethylene tetrafluoroethylene copolymer (ETFE) etc., is not limited to this; Modified resin can be above-mentioned virgin resin resin after interpolation reinforcing material or additive are modified, and virgin resin or modified resin are uniformly coated on the above-mentioned core outer layer with different cross section.
Here, the modified additive used of virgin resin is included but not limited to:
Carbon fiber or glass fibre;
Superfine powder of polytetrafluoroethylene, titanium dioxide, carbon black, calcium carbonate, nano barium sulfate.
Present invention simultaneously discloses a kind of method manufacturing above-mentioned composite monofilament, mainly comprise the steps that
(1) using through preliminary draft, draw ratio be the polyester resin PET monofilament of 2-6 times as core, through weighing apparatus tension force unreel the die head by being contained in screw extruder;
(2) thermoplastic resin (including virgin resin and modified resin) is melt extruded by screw extruder, is evenly distributed on outside the core filaments of constant-speed operation, and cladding forms cortex;
(3) through hot water storgae or hot bellows, the composite filament after cladding is carried out the drawing-off again of 0-3 times, batch by oven heat sizing, obtain finished product composite monofilament.
In step (1), select specification be the continuous polycondensation through 2-6 times of drafting multiple preliminary draft (PET) monofilament of 0.30mm as core, the tension force that weighed unreels with specific speed by specific standard, the coating mould assembly that is contained in special screw extruder.
Thermoplastic resin (includes virgin resin or modified resin), and screw extruder is passed through in section, the each district of screw extruder and die assembly temperature press the Characteristics Control of this thermoplastic resin at 240-330 DEG C, melted thermoplastic resin is extruded through by die head and is evenly coated at outside the core filaments of constant-speed operation and forms cortex, after hot water is lowered the temperature, by 95 DEG C of boilers through the drafting multiple drawing-off by the setting of polyester pre-draft multiple, entered the oven heat drawing-off total draft multiple (5.0-5.8 times) to required polyester (PET) core filaments again, cool down after being shaped by shaping baking oven, batch.
Core filaments unreel speed, screw extruder dosing pump pressure and die head specification and the combination of specific draw ratio forms specific technological parameter, obtain fiber number be 0.30-0.70mm or thicker with thermoplastic resin for cortex, the core-sheath silk that polyester (PET) is sandwich layer.
The composite filament of present invention process manufacture has mechanical property and the stability of excellence, on the basis of advantage highly kept and make use of the low cost of polyester (PET), high intensity and dimensional stability, other performance advantages of other thermoplastic resin of process makes full use, the product obtained has polyester (PET) monofilament that current drawing process produces or the composite performance that skin-core structure silk cannot realize at present; The technical fabrics that the composite monofilament weaving that present invention process produces is made is used to be used in the solid-liquid separation process such as the harsher industrial filter of running environment and technique transmission equipment, production efficiency will be improved, reduce maintenance cost and production cost, reduce labor intensity, be with a wide range of applications.
The above; being only the present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; the change that can readily occur in or replacement, all should be encompassed within protection scope of the present invention. Therefore, protection scope of the present invention should be as the criterion with scope of the claims.
Claims (1)
1. the manufacture method of skin-core structure major diameter composite monofilament, the uniform coating thermoplastic resin material cortex in outside of composite monofilament core, cortex is thermoplastic resin material, described thermoplastic resin is virgin resin or modified resin, described virgin resin includes polypropylene, polyamide, polyphenylene sulfide, polyether-ether-ketone, Meltability polytetrafluorethyletubular, Kynoar, fluorinated ethylene propylene copolymer, ethylene tetrafluoroethylene copolymer, described modified resin is the resin that in above-mentioned virgin resin, any one is modified, described modified resin is that virgin resin passes through to be added into following material modification and prepares: carbon fiber or glass fibre, superfine powder of polytetrafluoroethylene, titanium dioxide, carbon black powder, Paris white, nano barium sulfate powder, it is characterised in that mainly comprise the steps that
(1) using the polyester resin PET monofilament through preliminary draft as core, the die head by being contained in screw extruder is unreeled through weighing apparatus tension force, thermoplastic resin is cut into slices by screw extruder, and each district of screw extruder and die assembly temperature press the Characteristics Control of this thermoplastic resin at 240-330 DEG C;
(2) thermoplastic resin is melt extruded by screw extruder, is evenly distributed on outside the core filaments of constant-speed operation, and cladding forms cortex;
(3) after hot water is lowered the temperature, by 95 DEG C of boilers through the drafting multiple drawing-off by the setting of polyester pre-draft multiple, total draft multiple 5.0-5.8 times then through oven heat drawing-off to required polyester PET core filaments, cool down after being shaped by shaping baking oven, batch, obtain fiber number be 0.30-0.70mm with thermoplastic resin for cortex, polyester PET is the core-sheath silk of sandwich layer.
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| CN201410176283.5A CN103924324B (en) | 2014-04-29 | 2014-04-29 | The manufacture method of skin-core structure major diameter composite monofilament |
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| CN201410176283.5A CN103924324B (en) | 2014-04-29 | 2014-04-29 | The manufacture method of skin-core structure major diameter composite monofilament |
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| CN103924324B true CN103924324B (en) | 2016-06-15 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104711746A (en) * | 2014-08-28 | 2015-06-17 | 厦门厦迪亚斯环保过滤技术有限公司 | Filter screen applied to phosphoric acid industry and weaving method thereof |
| CN104562731A (en) * | 2015-01-08 | 2015-04-29 | 江阴和创弹性体新材料科技有限公司 | Three-dimensional mesh structure with high elasticity |
| CN105002596B (en) * | 2015-08-04 | 2017-05-31 | 无锡金通化纤有限公司 | A kind of composite monofilament for being applied to filtrate base fabric and preparation method thereof |
| CN106120161B (en) * | 2016-06-23 | 2019-06-07 | 江阴和创弹性体新材料科技有限公司 | A kind of space network of lightweight elastomeric property |
| CN108754645A (en) * | 2018-07-24 | 2018-11-06 | 南通天龙化纤有限公司 | A kind of production technology of garment accessories polyester staple fiber |
| CN108914227A (en) * | 2018-07-26 | 2018-11-30 | 湖北省宇涛特种纤维股份有限公司 | Preparation method, die head component and the fabric of extrusion coated formula core-skin fibre long filament |
| CN114769059B (en) * | 2020-11-16 | 2023-09-19 | 浙江古纤道绿色纤维有限公司 | Gum dipping device for producing thermosetting resin wires |
| CN112726019B (en) * | 2020-12-04 | 2022-04-29 | 佛山市维晨科技有限公司 | Multi-element structure synergistically enhanced thermal insulation aerogel/polymer composite material and preparation method thereof |
| CN112481736A (en) * | 2020-12-28 | 2021-03-12 | 南通新帝克单丝科技股份有限公司 | Polyvinylidene fluoride polyester composite monofilament and preparation method thereof |
| CN114016213A (en) * | 2021-10-11 | 2022-02-08 | 苏州康胜氟材料科技有限公司 | Bi-component corrosion-resistant spun-bonded non-woven material, and manufacturing method and application thereof |
| CN113737313A (en) * | 2021-10-13 | 2021-12-03 | 无锡金通高纤股份有限公司 | Peek/pps sheath-core composite monofilament, preparation method and application |
| CN114197198A (en) * | 2021-12-28 | 2022-03-18 | 南通新帝克单丝科技股份有限公司 | Method for coating high-strength polyester industrial yarn by using PTFE (polytetrafluoroethylene) |
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| CN1696360A (en) * | 2005-05-26 | 2005-11-16 | 天津工业大学 | Microwave shielding fiber and fabricating method |
| CN101994165A (en) * | 2010-10-21 | 2011-03-30 | 台州东海塑料品制造有限公司 | High-intensity environment-protection type textilene reeled silk |
| CN103668557A (en) * | 2013-11-18 | 2014-03-26 | 浙江三星特种纺织有限公司 | Photosensitive sheath core coating yarn and preparation method thereof |
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Patent Citations (3)
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|---|---|---|---|---|
| CN1696360A (en) * | 2005-05-26 | 2005-11-16 | 天津工业大学 | Microwave shielding fiber and fabricating method |
| CN101994165A (en) * | 2010-10-21 | 2011-03-30 | 台州东海塑料品制造有限公司 | High-intensity environment-protection type textilene reeled silk |
| CN103668557A (en) * | 2013-11-18 | 2014-03-26 | 浙江三星特种纺织有限公司 | Photosensitive sheath core coating yarn and preparation method thereof |
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