CN101899721B - 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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- CN101899721B CN101899721B CN200910057311.0A CN200910057311A CN101899721B CN 101899721 B CN101899721 B CN 101899721B CN 200910057311 A CN200910057311 A CN 200910057311A CN 101899721 B CN101899721 B CN 101899721B
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- composite material
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- denier polyester
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- 239000002131 composite material Substances 0.000 title claims abstract description 60
- 229920000728 polyester Polymers 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000003351 stiffener Substances 0.000 title claims abstract description 14
- 239000000835 fiber Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 238000007493 shaping process Methods 0.000 claims description 8
- 238000009987 spinning Methods 0.000 claims description 7
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 230000001112 coagulating effect Effects 0.000 claims description 4
- 230000015271 coagulation Effects 0.000 claims description 4
- 238000005345 coagulation Methods 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- -1 polypropylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 229920006231 aramid fiber Polymers 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 claims description 2
- 238000005538 encapsulation Methods 0.000 claims description 2
- 239000007790 solid phase Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 239000007921 spray Substances 0.000 abstract 1
- 230000007812 deficiency Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
Landscapes
- Reinforced Plastic Materials (AREA)
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 making.
Background technology
The technology of the existing monofilament that is applied in engineered composite material includes:
(1) circular common coarse denier polyester monofilaments, its defect is smooth surface, inadequate as the frictional force of composite, inadequate with the bond stress of base material, must be by the processing of high temperature hot-rolling impression, but can reduce the intensity of monofilament and consume the energy, increasing production cost.
(2) the thick denier polypropylene monofilament of rectangle, its defect is that heat resistance is poor, serviceability temperature is lower than 180 ℃, otherwise meeting melting, and the lower 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, at high temperature high contraction reaches the effect that increases bond stress.
The monofilament of engineered composite material must possess the feature required as reinforcing material, as high in intensity, heat resistance is good, suitable shrinkage factor and chemical stability, as the coarse denier monofilaments fiber being applied in FRP requires higher intensity (> 400MPa), heat resisting temperature is at 200 ℃, there is higher shrinkage factor (> 20%), good chemical stability and fluted in the 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, after needing, processing affects the strength of materials and increases cost, be unsuitable for a large amount of production.
Summary of the invention
The object 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 is also provided simultaneously, and the engineering composite material wrapped stiffener making.
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 of tackify is dry, by screw rod melting, spinnerets by porous arranged side by side is extruded, through after spinning nozzle expanded bonding by the cooling stretching of water-bath (also referred to as coagulating bath), outside cooling bath, after after-drawing, shape at low temperatures and reel, making the linear high shrinkage coarse denier polyester monofilaments of multi sphere.
Wherein, the polyester slice of tackify is the polyester slice that is 0.7～1.05 through the inherent viscosity of solid-phase tack producing; The polyester slice of tackify is dry under vacuum condition, and baking temperature is 75～150 ℃, and the time is 6～12h.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 aperture is 0.9～3.6mm, hole spacing is 0.12～0.6mm.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, by the coarse denier polyester monofilaments being made by said method after the preliminary outer parcel of engineered composite material, composite slowly passes through high-temperature shaping stretching-machine, cause reaction a large amount of heat release of binding material in composite through high temperature, the coarse denier polyester monofilaments fiber of parcel is subject to thermal contraction to be closely 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 being made by the preparation method of above-mentioned engineering composite material wrapped stiffener, and 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 to be spinned by sticky method after porous arranged side by side, fiber makes to lay in stress between fiber molecule at low temperatures can have larger heat-shrinkable, under last heating condition in the time of coating engineering composite, the release of stress between fiber molecule and form larger convergent force, has reached the effect that increases engineered composite material concave-convex surface and frictional force.
Technology of the present invention is a little:
(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 also can increase engineered composite material application time and the frictional force on other materials surface, increase bond stress.
(2) highly shrinkable energy, make monfil can produce larger convergent force on composite material base surface after being heated, the bond stress of increased fiber and base material, and the depth of groove of composite material surface also can be suitable increase, the bond stress that increases engineered composite material when application and other materials with extract merit.
The specific embodiment
Embodiment mono-:
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; There are 4 holes by linearly aligned hole count arranged side by side, aperture 2.8mm, hole spacing is 0.45mm, spinning die head temperature is 280 ℃, coagulating bath (water-bath) temperature 50 C, 3.2 times of spinneret draft multiplying powers, 2.5 times of after-drawing multiplying powers, draw speed 75m/min, 80 ℃ of setting temperatures; 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 making, 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 bis-:
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; There are 5 holes by linearly aligned hole count arranged side by side, aperture 3.0mm, hole spacing is 0.55mm; 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; Parcel composite material base is carbon fiber and epoxy resin; 150 ℃ of composite setting temperatures, shaping time is 45min.Record diameter thickness (short arc) 0.70mm of the coarse denier polyester monofilaments making, 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 tri-:
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; Be 6 holes by linearly aligned hole count arranged side by side, aperture 3.2mm, hole spacing is 0.60mm; 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, parcel composite material base is glass fibre and epoxy resin; 165 ℃ of composite setting temperatures, shaping time is 40min.Record diameter thickness (short arc) 0.72mm of the coarse denier polyester monofilaments making, 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 (8)
1. the preparation method of the linear high shrinkage coarse denier polyester monofilaments of multi sphere, it is characterized in that: after the polyester slice of tackify is dry, by screw rod melting, spinnerets by porous arranged side by side is extruded, through after spinning nozzle expanded bonding by the cooling stretching of water-bath, outside cooling bath, after after-drawing, shape at low temperatures and reel, making the linear high shrinkage coarse denier polyester monofilaments of multi sphere; Wherein, the hole count of described porous spinnerets arranged side by side is 4～10 holes, linear array, and aperture is 0.9～3.6mm, hole spacing is 0.12～0.6mm.
2. preparation method according to claim 1, is characterized in that: the polyester slice that the polyester slice of described tackify is is 0.7～1.05 through the inherent viscosity of solid-phase tack producing; 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: 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: spinning die head temperature is 280～310 ℃; 30～90 ℃ of coagulation bath temperatures; 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 ℃, draw speed 25～120m/min, and described setting temperature is 45～95 ℃.
5. the preparation method of an engineering composite material wrapped stiffener, it is characterized in that: the coarse denier polyester monofilaments being made by the arbitrary described method of claim 1 to 4 is carried out after preliminary outer parcel engineered composite material, composite slowly passes through high-temperature shaping stretching-machine, cause reaction a large amount of heat release of binding material in composite through high temperature, the coarse denier polyester monofilaments fiber of parcel is subject to thermal contraction to be closely wrapped in composite material surface, and forms the groove of even spiral at composite material surface.
6. the preparation method of engineering composite material wrapped stiffener according to claim 5, 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.
7. the preparation method of engineering composite material wrapped stiffener according to claim 5, is characterized in that: the high-temperature shaping temperature of described composite is 80～220 ℃, and shaping time is 10～45min.
8. the engineering composite material wrapped stiffener being made by the arbitrary described preparation method of claim 5 to 7, is characterized in that: coarse denier polyester monofilaments fibers encapsulation is at composite material surface, and forms the groove of even spiral at composite material surface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| 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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| CN101899721A CN101899721A (en) | 2010-12-01 |
| CN101899721B true CN101899721B (en) | 2014-06-04 |
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| 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 |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| 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 |
| CN100534783C (en) * | 2006-03-15 | 2009-09-02 | 东原材料科技股份有限公司 | Surface treatment method of glass fiber reinforced plastic material |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平7-118921A 1995.05.09 |
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Granted publication date: 20140604 Termination date: 20170525 |