CN101899721A - Preparation method of coarse denier polyester monofilaments, engineering composite material wrapped stiffener and preparation method thereof - Google Patents
Preparation method of coarse denier polyester monofilaments, engineering composite material wrapped stiffener and preparation method thereof Download PDFInfo
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- CN101899721A CN101899721A CN2009100573110A CN200910057311A CN101899721A CN 101899721 A CN101899721 A CN 101899721A CN 2009100573110 A CN2009100573110 A CN 2009100573110A CN 200910057311 A CN200910057311 A CN 200910057311A CN 101899721 A CN101899721 A CN 101899721A
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Abstract
The invention discloses a preparation method of coarse denier polyester monofilaments, an engineering composite material wrapped stiffener and a preparation method thereof. Viscosified polyester chips are fused through a screw after dried, are squeezed by parallel porous spinneret plates, are cooled and extended through a cooling bath after extruded and adhered by spray mouths, and are shaped and wound under low temperature after a post extension outside the cooling bath, after the prepared coarse denier polyester monofilaments are preliminarily wrapped in the outer surface of an engineering composite material, the composite material slowly passes through a high-temperature setting stretcher, wherein high temperature can result in reaction of binding material in the composite material and a great amount of dissipated heat, the wrapped coarse denier polyester monofilaments shrink after heated and can tightly wrap the surface of the composite material and form uniformly spiral grooves on the surface of the composite material. The coarse denier polyester monofilaments have greater thermal shrinkage, stresses among fiber molecules can release under a heating condition in wrapping the engineering composite material, so as to form larger shrinkage force and enlarge the surface concave-convex property and the friction force of the engineering composite material.
Description
Technical field
The present invention relates to a kind of preparation method of heavy denier polyester fiber monofilament, particularly the preparation method of the linear high shrinkage monofilament polyester of multi sphere.
The invention still further relates to the preparation method of the engineering composite material wrapped stiffener that contains above-mentioned coarse denier polyester monofilaments, and the engineering composite material wrapped stiffener that makes.
Background technology
The existing technology that is applied in the monofilament of engineered composite material includes:
(1) circular common coarse denier polyester monofilaments, its defective is smooth surface, not enough as the frictional force of composite, and is not enough with the bond stress of base material, must pass through the processing of elevated temperature heat roll-in trace, but can reduce the intensity and the consumes energy of monofilament, increases production cost.
(2) the thick denier polypropylene monofilament of rectangle, its defective is that heat resistance is relatively poor, serviceability temperature is lower than 180 ℃, otherwise the meeting fusion, and the low enhancing effect that can not play significantly base material of intensity;
(3) the high polymer monofilament in other different in nature cross section, shortcoming is that shrinkage factor is little, can not at high temperature high contraction reach the effect that increases bond stress.
The monofilament of engineered composite material must possess as the required feature of reinforcing material, as the intensity height, heat resistance is good, suitable shrinkage factor and chemical stability, as be applied in coarse denier monofilaments fiber among the FRP require higher intensity (＞400MPa), heat resisting temperature is at 200 ℃, has higher shrinkage factor (＞20%), good chemical stability and fluted in direction along fiber, can increased fiber and the bond stress of base material, improve and extract merit, and traditional thick dawn PP filament strength deficiency and heat resistance deficiency, traditional thick dawn PET monofilament cross section is circular, with base material bond stress deficiency, need back processing to influence the strength of materials and increase cost, be unsuitable for a large amount of productions.
Summary of the invention
The objective of the invention is in order to overcome technological deficiency recited above, the preparation method of the linear high shrinkage monofilament polyester of a kind of multi sphere is provided; The preparation method of the engineering composite material wrapped stiffener that contains above-mentioned coarse denier polyester monofilaments also is provided simultaneously, and the engineering composite material wrapped stiffener that makes.
In order to solve technical problem recited above, the present invention takes the technical scheme of the following stated:
The invention provides the preparation method of the linear high shrinkage coarse denier polyester monofilaments of a kind of multi sphere, after the polyester slice drying with tackify, by the screw rod fusion, spinnerets by porous arranged side by side is extruded, expanded bonding back through spinning nozzle is stretched by water-bath (being also referred to as coagulating bath) cooling, after outside cooling bath, passing through after-drawing, finalize the design at low temperatures and reel, make the linear high shrinkage coarse denier polyester monofilaments of multi sphere.
Wherein, the polyester slice of tackify is that the inherent viscosity of process solid-phase tack producing is 0.7～1.05 polyester slice; The polyester slice of tackify is dry under vacuum condition, and baking temperature is 75～150 ℃, and the time is 6～12h.The screw rod melt temperature is: 50～120 ℃ of cooling feed zones, 200～290 ℃ of preheating zones, 280～320 ℃ of melting zones, 290～330 ℃ of compressional zones, 280～315 ℃ of metering zones.The hole count of porous spinnerets is 4～10 holes side by side, linear array, and the aperture is 0.9～3.6mm, the hole spacing is 0.12～0.6mm.The spinning die head temperature is 280～310 ℃; Coagulation bath temperature is 30～90 ℃; Coagulating bath spinneret draft multiplying power is 2～6 times; Described after-drawing multiplying power is 2～4 times, and draft temperature is 90～130 ℃, adopts one-level drawing-off and secondary drawing-off, and draw speed is 25～120m/min, and setting temperature is 45～95 ℃.
The present invention also provides a kind of preparation method of engineering composite material wrapped stiffener, after will passing through the preliminary outer parcel of engineered composite material by the coarse denier polyester monofilaments that said method makes, composite slowly passes through the high-temperature shaping stretching-machine, cause reaction and a large amount of heat release of binding material in the composite through high temperature, the coarse denier polyester monofilaments fiber of parcel is subjected to thermal contraction closely to be wrapped in composite material surface, and forms the groove of even spiral at composite material surface.
Wherein, the base material of engineered composite material is the composite base material of epoxy resin binding agent and glass fibre, carbon fiber, aramid fiber, high-strength high-modulus polyethylene fiber, high-strength and high-modulus polypropylene fibre or steel fibre.The high-temperature shaping temperature of composite is 80～220 ℃, and shaping time is 10～45min.
The present invention also provides a kind of engineering composite material wrapped stiffener that is made by the preparation method of above-mentioned engineering composite material wrapped stiffener, and the coarse denier polyester monofilaments fibers encapsulation is at composite material surface, and forms the groove of even spiral at composite material surface.
The linear high shrinkage coarse denier polyester monofilaments of multi sphere of the present invention is by sticking method spinning after the porous arranged side by side, fiber makes between fiber molecule deposit stress can have bigger heat-shrinkable at low temperatures, at last under the heating condition when the parcel engineered composite material, the release of stress between fiber molecule and form bigger convergent force has reached the effect that increases engineered composite material concave-convex surface and frictional force.
Technology of the present invention is had a few:
(1) multi sphere linearity increases the frictional force of fiber and engineered composite material base material, not only can fortifying fibre and the bond stress of base material, and in the time of also can increasing engineered composite material and use and the frictional force on other materials surface, the increase bond stress.
(2) highly shrinkable energy, make monfil after being heated, can produce bigger convergent force on the composite material base surface, the bond stress of increased fiber and base material, and the depth of groove of composite material surface also can be suitable increase, when increasing engineered composite material and using with the bond stress of other materials with extract merit.
The specific embodiment
Embodiment one:
The inherent viscosity of raw material polyester slice is 0.86; The baking temperature of polyester slice under vacuum condition is: 75 ℃ of dry 1h, 115 ℃ of dry 2h, 135 ℃ of dry 6h; Screw rod melt temperature: 50 ℃ of cooling feed zones, 265 ℃ of preheating zones, 305 ℃ of melting zones, 310 ℃ of compressional zones, 310 ℃ of metering zones; By linearly aligned hole count arranged side by side 4 holes are arranged, aperture 2.8mm, the hole spacing is 0.45mm, the spinning die head temperature is 280 ℃, 50 ℃ of coagulating bath (water-bath) temperature, 3.2 times of spinneret draft multiplying powers, 2.5 times of after-drawing multiplying powers, draw speed 75m/min, 80 ℃ of setting temperatures; The parcel composite material base is glass fibre and epoxy resin; 175 ℃ of composite setting temperatures, the time is 30min.Record diameter thickness (short arc) 0.58mm of the coarse denier polyester monofilaments that makes, width (long arc) 1.95mm, percent thermal shrinkage 20%, intensity 510MPa, the intensity depth of groove 0.85mm of engineered composite material, intensity 450MPa.
Embodiment two:
The inherent viscosity of raw material polyester slice is 0.89; The baking temperature of polyester slice under vacuum condition is: 55 ℃ of dry 1h, 125 ℃ of dry 2h, 135 ℃ of dry 5h; Screw rod melt temperature: 70 ℃ of cooling feed zones, 275 ℃ of preheating zones, 310 ℃ of melting zones, 315 ℃ of compressional zones, 310 ℃ of metering zones; By linearly aligned hole count arranged side by side 5 holes are arranged, aperture 3.0mm, the hole spacing is 0.55mm; The spinning die head temperature is 289 ℃, 70 ℃ of coagulation bath temperatures, 3.5 times of spinneret draft multiplying powers, 2.2 times of after-drawing multiplying powers, draw speed 90m/min, 85 ℃ of setting temperatures; The parcel composite material base is carbon fiber and epoxy resin; 150 ℃ of composite setting temperatures, shaping time are 45min.Record diameter thickness (short arc) 0.70mm of the coarse denier polyester monofilaments that makes, width (long arc) 2.95mm, percent thermal shrinkage 15.2%, intensity 540MPa, the intensity depth of groove 0.75mm of engineered composite material, intensity 550MPa.
Embodiment three:
The inherent viscosity of raw material polyester slice is 0.95; The baking temperature of polyester slice under vacuum condition is: 80 ℃ of dry 1h, 120 ℃ of dry 2h, 135 ℃ of dry 5h; Screw rod melt temperature: 55 ℃ of cooling feed zones, 285 ℃ of preheating zones, 310 ℃ of melting zones, 315 ℃ of compressional zones, 315 ℃ of metering zones; By linearly aligned hole count arranged side by side is 6 holes, aperture 3.2mm, and the hole spacing is 0.60mm; The spinning die head temperature is 295 ℃, 85 ℃ of coagulation bath temperatures, and 3.8 times of spinneret draft multiplying powers, 2.0 times of after-drawing multiplying powers, draw speed 105m/min, 90 ℃ of setting temperatures, the parcel composite material base is glass fibre and epoxy resin; 165 ℃ of composite setting temperatures, shaping time are 40min.Record diameter thickness (short arc) 0.72mm of the coarse denier polyester monofilaments that makes, width (long arc) 3.65mm, percent thermal shrinkage 14.5%, intensity 550MPa, the intensity depth of groove 0.70mm of engineered composite material, intensity 475MPa.
Claims (9)
1. the preparation method of the linear high shrinkage coarse denier polyester monofilaments of a multi sphere, it is characterized in that: after the polyester slice drying with tackify, by the screw rod fusion, spinnerets by porous arranged side by side is extruded, expanded bonding back through spinning nozzle is stretched by the water-bath cooling, after outside cooling bath, passing through after-drawing, finalize the design at low temperatures and reel, make the linear high shrinkage coarse denier polyester monofilaments of multi sphere.
2. preparation method according to claim 1 is characterized in that: the polyester slice of described tackify is that the inherent viscosity of process solid-phase tack producing is 0.7～1.05 polyester slice; The polyester slice of tackify is dry under vacuum condition, and baking temperature is 75～150 ℃, and the time is 6～12h.
3. preparation method according to claim 1 is characterized in that: described screw rod melt temperature is: the cooling feed zone: 50～120 ℃, and 200～290 ℃ of preheating zones, 280～320 ℃ of melting zones, 290～330 ℃ of compressional zones, 280～315 ℃ of metering zones.
4. preparation method according to claim 1 is characterized in that: the hole count of described porous spinnerets arranged side by side is 4～10 holes, linear array, and the aperture is 0.9～3.6mm, the hole spacing is 0.12～0.6mm.
5. preparation method according to claim 1 is characterized in that: the spinning die head temperature is 280～310 ℃; Coagulation bath temperature is 30～90 ℃; Coagulating bath spinneret draft multiplying power is 2～6 times; Described after-drawing multiplying power is 2～4 times, and draft temperature is 90～130 ℃, and draw speed is 25～120m/min, and described setting temperature is 45～95 ℃.
6. the preparation method of an engineering composite material wrapped stiffener, it is characterized in that: after will passing through the preliminary outer parcel of engineered composite material by the coarse denier polyester monofilaments that the arbitrary described method of claim 1 to 5 makes, composite slowly passes through the high-temperature shaping stretching-machine, cause reaction and a large amount of heat release of binding material in the composite through high temperature, the coarse denier polyester monofilaments fiber of parcel is subjected to thermal contraction closely to be wrapped in composite material surface, and forms the groove of even spiral at composite material surface.
7. the preparation method of engineering composite material wrapped stiffener according to claim 6, it is characterized in that: the base material of described engineered composite material is the composite base material of epoxy resin binding agent and glass fibre, carbon fiber, aramid fiber, high-strength high-modulus polyethylene fiber, high-strength and high-modulus polypropylene fibre or steel fibre.
8. the preparation method of engineering composite material wrapped stiffener according to claim 6, it is characterized in that: the high-temperature shaping temperature of composite is 80～220 ℃, shaping time is 10～45min.
9. engineering composite material wrapped stiffener that is made by the arbitrary described preparation method of claim 6 to 8 is characterized in that: the coarse denier polyester monofilaments fibers encapsulation is at composite material surface, and forms the groove of even spiral at composite material surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200910057311.0A CN101899721B (en) | 2009-05-25 | 2009-05-25 | Preparation method of coarse denier polyester monofilaments, engineering composite material wrapped stiffener and preparation method thereof |
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| CN200910057311.0A CN101899721B (en) | 2009-05-25 | 2009-05-25 | Preparation method of coarse denier polyester monofilaments, engineering composite material wrapped stiffener and preparation method thereof |
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| CN101899721A true CN101899721A (en) | 2010-12-01 |
| CN101899721B CN101899721B (en) | 2014-06-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106048760A (en) * | 2016-08-11 | 2016-10-26 | 成都市开悦化纤有限公司 | Feeding device for chemical fiber forming and processing |
| CN106400315A (en) * | 2016-11-18 | 2017-02-15 | 上海理工大学 | In situ bonding method of electrospun nanofiber membrane |
| CN110129903A (en) * | 2019-04-29 | 2019-08-16 | 吴江精美峰实业有限公司 | The production method and device of thick denier filament fiber |
Citations (4)
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| JPH07118921A (en) * | 1993-10-25 | 1995-05-09 | Teijin Ltd | Polyester fiber of high shrinkage stress and production thereof |
| CN1929986A (en) * | 2004-03-05 | 2007-03-14 | 艾尔坎技术及管理有限公司 | Method for the continuous production of fibre-reinforced plastic plates |
| CN1990540A (en) * | 2005-12-30 | 2007-07-04 | 上海杰事杰新材料股份有限公司 | Fiber reinforced thermolplastic composite material preparation method |
| CN101037022A (en) * | 2006-03-15 | 2007-09-19 | 东原材料科技股份有限公司 | Method of processing the surface of glass fiber strengthened plastic material |
-
2009
- 2009-05-25 CN CN200910057311.0A patent/CN101899721B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07118921A (en) * | 1993-10-25 | 1995-05-09 | Teijin Ltd | Polyester fiber of high shrinkage stress and production thereof |
| CN1929986A (en) * | 2004-03-05 | 2007-03-14 | 艾尔坎技术及管理有限公司 | Method for the continuous production of fibre-reinforced plastic plates |
| CN1990540A (en) * | 2005-12-30 | 2007-07-04 | 上海杰事杰新材料股份有限公司 | Fiber reinforced thermolplastic composite material preparation method |
| CN101037022A (en) * | 2006-03-15 | 2007-09-19 | 东原材料科技股份有限公司 | Method of processing the surface of glass fiber strengthened plastic material |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106048760A (en) * | 2016-08-11 | 2016-10-26 | 成都市开悦化纤有限公司 | Feeding device for chemical fiber forming and processing |
| CN106048760B (en) * | 2016-08-11 | 2018-08-10 | 成都市开悦化纤有限公司 | A kind of chemical fibre processing and forming feeding equipment |
| CN106400315A (en) * | 2016-11-18 | 2017-02-15 | 上海理工大学 | In situ bonding method of electrospun nanofiber membrane |
| CN106400315B (en) * | 2016-11-18 | 2018-10-23 | 上海理工大学 | A kind of adhesive method in situ of electro spinning nanometer fiber membrane |
| CN110129903A (en) * | 2019-04-29 | 2019-08-16 | 吴江精美峰实业有限公司 | The production method and device of thick denier filament fiber |
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| CN101899721B (en) | 2014-06-04 |
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