CN112248486A - Basalt fiber reinforced thermoplastic polyethylene prepreg tape and preparation process thereof - Google Patents
Basalt fiber reinforced thermoplastic polyethylene prepreg tape and preparation process thereof Download PDFInfo
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- CN112248486A CN112248486A CN202011081976.8A CN202011081976A CN112248486A CN 112248486 A CN112248486 A CN 112248486A CN 202011081976 A CN202011081976 A CN 202011081976A CN 112248486 A CN112248486 A CN 112248486A
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- prepreg tape
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- 239000004698 Polyethylene Substances 0.000 title claims abstract description 65
- -1 polyethylene Polymers 0.000 title claims abstract description 65
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 65
- 229920001169 thermoplastic Polymers 0.000 title claims abstract description 46
- 239000004416 thermosoftening plastic Substances 0.000 title claims abstract description 46
- 229920002748 Basalt fiber Polymers 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 239000000835 fiber Substances 0.000 claims abstract description 83
- 229920005989 resin Polymers 0.000 claims abstract description 21
- 239000011347 resin Substances 0.000 claims abstract description 21
- 238000007598 dipping method Methods 0.000 claims abstract description 16
- 238000000465 moulding Methods 0.000 claims abstract description 10
- 230000032258 transport Effects 0.000 claims abstract 2
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 claims 2
- 229920005992 thermoplastic resin Polymers 0.000 abstract description 5
- 230000035699 permeability Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 3
- 238000007711 solidification Methods 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 238000007599 discharging Methods 0.000 description 6
- 238000005470 impregnation Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 239000003733 fiber-reinforced composite Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000003490 calendering Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
- B29C70/521—Pultrusion, i.e. forming and compressing by continuously pulling through a die and impregnating the reinforcement before the die
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
本发明提供了一种玄武岩纤维增强热塑性聚乙烯预浸带的制备装置，按照预浸带的制备过程依次包括纱架、分丝板、浸胶装置、固化成型装置、预成型模具、牵引装置和盘卷装置；分丝板固定安装在纱架与浸胶装置之间，浸胶装置一端连接分丝板，另一端输送纤维至固化成型装置；预成型模具，设置在固化成型装置后端；牵引装置，设置在预成型模具后端；盘卷装置，进行盘卷。还提供预浸带的制备工艺，是通过将连续纤维纱轴进行单束纤维分散，再与均匀塑化的树脂浸渍后加热固化模具，进行第一次固化成型，形成纤维增强聚乙烯棒；在牵引装置作用下进入预成型模具，进行第二次加热固化成型，形成预浸带，其热塑性树脂浸透性和均匀性好，孔隙率低。
The invention provides a preparation device for a basalt fiber reinforced thermoplastic polyethylene prepreg tape. According to the preparation process of the prepreg tape, it sequentially includes a creel, a splitter plate, a dipping device, a curing forming device, a preforming die, a traction device and a Coiling device; the splitter plate is fixedly installed between the creel and the dipping device, one end of the dipping device is connected to the splitter plate, and the other end transports the fibers to the curing and forming device; the pre-forming mold is set at the rear end of the curing and forming device; traction The device is arranged at the rear end of the preforming mold; the coiling device is used for coiling. The preparation process of the prepreg tape is also provided, which is to disperse a single bundle of fibers on a continuous fiber spool, and then impregnate it with a uniformly plasticized resin, then heat and solidify the mold, and perform the first solidification molding to form a fiber-reinforced polyethylene rod; Under the action of the traction device, it enters the pre-forming mold, and is heated and solidified for the second time to form a pre-preg tape. The thermoplastic resin has good permeability and uniformity, and low porosity.
Description
Technical Field
The invention belongs to the technical field of prepreg preparation of fiber reinforced composite materials, and particularly relates to a basalt fiber reinforced thermoplastic polyethylene prepreg tape and a preparation process thereof.
Background
The fiber reinforced composite material is widely applied due to excellent properties of light weight, high strength, corrosion resistance and the like. The prepreg is a composition prepared by impregnating continuous fibers or fabrics with a resin matrix under strictly controlled conditions to prepare the resin matrix and a reinforcement, is an intermediate material for manufacturing a composite material, can ensure the accurate control of the proportion of resin and the reinforcement fibers, improves the product quality and the production efficiency, and is divided into thermosetting resin prepregs and thermoplastic resin prepregs according to the difference of the resin matrix.
In general, the thermosetting prepreg has short storage life, requires low-temperature refrigeration, and is easy to deteriorate and harden in advance; compared with a thermosetting prepreg tape, the thermoplastic prepreg tape has the advantages of long transportation and storage period, continuous and efficient preparation, high impact toughness, recyclability and the like, but due to the high viscosity of the thermoplastic resin, the permeability, the uniformity of resin distribution and the porosity of the prepreg tape of a prepreg such as a common prepreg tape directly determine the molding difficulty and the mechanical property of the product. Research shows that the interlaminar shear performance of the composite material is reduced by 5-15% when the porosity is 1%. At present, in the existing prepreg tape manufacturing process, the permeability, the resin distribution uniformity and the low porosity of the prepreg tape are difficult to ensure, so the improvement of the impregnation process is the key for improving the performance of the thermoplastic prepreg tape.
Disclosure of Invention
In order to solve the technical problem of how to improve the performance of a thermoplastic prepreg tape by an impregnation process, obtain the permeability and uniformity of thermoplastic resin and simultaneously obtain a high-quality prepreg tape with low porosity, the invention provides a preparation device of a basalt fiber reinforced thermoplastic polyethylene prepreg tape, which sequentially comprises a creel, a wire dividing plate, an impregnation device, a curing and forming device, a preforming mold, a traction device and a coiling device according to the preparation process of the prepreg tape;
the creel is arranged at one end of the preparation device, and a plurality of groups of continuous fiber yarn shafts are fixedly arranged through a bracket;
the filament separating plate is fixedly arranged between the creel and the gum dipping device and is used for dispersing single-bundle fibers of a continuous fiber yarn shaft on the creel;
one end of the gumming device is connected with the single-bundle fibers dispersed by the filament separating plate, and the other end of the gummed fibers is conveyed to the curing and forming device;
the curing and forming device is used for carrying out primary curing treatment on the fibers after gum dipping;
the preforming mold is arranged at the rear end of the curing and forming device and is used for carrying out secondary curing treatment on the fibers processed by the curing and forming device;
the traction device is arranged at the rear end of the preforming mold and is used for guiding and drawing the continuous fibers from the impregnation device to the preforming mold until the continuous fibers are coiled to the coiling device; the coiling device is used for carrying out coiling processing.
As an improvement, the device also comprises a double-screw extruder which is fixedly arranged on one side of the impregnation device.
Meanwhile, the invention also provides a preparation process for preparing the basalt fiber reinforced thermoplastic polyethylene prepreg tape by using the device, which comprises the following production steps:
(a) the continuous fiber yarn shaft is placed on a fiber yarn rack, and single-bundle fiber dispersion is carried out through a yarn dividing plate;
(b) the thermoplastic polyethylene is subjected to uniform plasticizing treatment by a double-screw extruder, wherein the feeding speed is 500-;
(c) the continuous fiber bundle enters a dipping device through a traction device, is fully dipped with resin and then is heated, cured and molded to form a fiber reinforced polyethylene rod, wherein the traction force is 10-50 kN, and the traction speed is 0.5-0.8 m/min;
(d) the fiber reinforced polyethylene rod enters a preforming die to be heated, cured and formed for the second time, and a basalt fiber reinforced thermoplastic polyethylene prepreg tape is formed;
(e) and the prepreg tape directly enters a coiling device through a traction device to be coiled and coiled.
As a modification, the continuous fibers in the step (a) are continuous basalt fibers, and the fiber diameter is 4-13 μm.
As a modification, in the step (c), the curing temperature is set to 150-; the volume fraction of the resin adopted during curing molding is 40-60%, and the volume fraction of the fiber is 40-60%.
In the step (d), the second heating, curing and forming is carried out at the temperature of 180-220 ℃, wherein the thickness of the preforming mold is 0.01-2mm, and the width is 10-1500 mm.
As a refinement, the porosity of the prepreg tape obtained in step (e) is less than 0.8%.
As an improvement, the basalt fiber reinforced thermoplastic polyethylene prepreg tape has the thickness of 0.01-2mm, the width of 10-1500mm, the tensile strength of 1200-1800MPa and the elastic modulus of 45-60 Gpa.
Has the advantages that: the basalt fiber reinforced thermoplastic polyethylene prepreg tape provided by the invention adopts a production process based on secondary forming of the basalt fiber reinforced thermoplastic polyethylene prepreg tape, and specifically, a continuous fiber yarn shaft is subjected to single-bundle fiber dispersion through a filament dividing plate, is fully impregnated with uniformly plasticized resin in a double-screw extruder, is heated and cured in a mold, and is subjected to primary curing forming to form a fiber reinforced polyethylene rod; under the action of a traction device, the fiber reinforced polyethylene rod enters a preforming die to be heated, cured and formed for the second time, and the basalt fiber reinforced thermoplastic polyethylene prepreg tape is coiled.
After the continuous basalt fibers pass through the filament separating plate, parallel fiber bundles are formed, the fiber bundles have larger specific surface area, the full impregnation with thermoplastic resin is facilitated, and the uniformity of resin distribution on the prepreg tape is ensured.
Thermoplastic polyethylene is added through a material hopper of the double-screw extruder, and after the mixture is subjected to strong shearing, stirring and calendaring effects between the two screws, the resin tends to be uniform and consistent, so that bubbles in the resin can be reduced conveniently, and the porosity is reduced. And carrying out secondary heating and curing on the fiber reinforced polyethylene rod in the die to form the thermoplastic prepreg tape, and adopting secondary curing molding to ensure that the resin is fully cured and improve the quality of the prepreg tape.
Drawings
FIG. 1 is a schematic view of the structure of a manufacturing apparatus of the present invention.
Fig. 2 is a schematic diagram of embodiment 1 of the present invention.
Detailed Description
The figures of the present invention are further described below in conjunction with the embodiments.
According to the preparation device of the Wuyan fiber reinforced thermoplastic polyethylene prepreg tape, a plurality of continuous fiber yarn shafts, preferably 2-100, are fixed on a creel, the specification of the continuous fibers is preferably 450-750tex, the fiber diameter is 4-13 mu m, single fiber bundle dispersion is carried out through a fiber dividing plate, then the single fiber bundle dispersion and resin uniformly plasticized in a double-screw extruder are fully impregnated in a dipping device, and a heating and curing mold is arranged, wherein the preferable width of the curing mold is 10-1500mm, the thickness of the curing mold is 0.01-2mm, and primary curing molding is carried out to form a fiber reinforced polyethylene rod; and then, under the action of a traction device, feeding the formed fiber reinforced polyethylene rod into a preforming mold for second heating, curing and forming to form a basalt fiber reinforced thermoplastic polyethylene prepreg tape, and then coiling, rolling and packaging the basalt fiber reinforced thermoplastic polyethylene prepreg tape by a coiling device.
Example 1
A preparation process of a basalt fiber reinforced thermoplastic polyethylene prepreg tape which is continuously needed comprises the following steps:
(1) 20 continuous basalt fiber yarn shafts are placed on a fiber creel, and are drawn into a filament separating plate to disperse single-bundle fibers, wherein the specification of the fibers is 600tex, and the diameter of the fibers is 4-6 mu m.
(2) Weighing thermoplastic polyethylene particles, pouring the thermoplastic polyethylene particles into a feeding port of a double-screw extruder, wherein the temperature of the feeding end of a charging barrel of the screw extruder is 150 ℃, the temperature of the middle section of the charging barrel of the screw extruder is 160 ℃, the temperature of the discharging section is 180 ℃ after uniform plasticization, and the discharging speed is 500 g/min.
(3) And (2) allowing the continuous fiber bundle to enter a dipping device through a traction device, wherein the traction force is 10kN, the traction speed is 0.8m/min, the continuous fiber bundle and the resin are fully dipped to form a plurality of polyethylene filaments which are arranged in parallel, and heating, curing and forming are carried out, wherein the curing temperature is 150 ℃, so that the fiber reinforced polyethylene rod is formed.
(4) And (3) leading a plurality of fiber reinforced polyethylene rods to enter a preforming die under the traction of a traction machine, carrying out second heating, curing and forming at the curing temperature of 220 ℃ to form the basalt fiber reinforced thermoplastic polyethylene prepreg tape, wherein the width of the die is 50mm, and the thickness of the die is 1 mm.
(5) The prepreg tape enters the coiling device through a traction device.
Tests show that the basalt fiber thermoplastic polyethylene prepreg tape prepared by the invention has the fiber volume content of 60%, the polyethylene volume content of 40%, the thickness of 1mm, the width of 50mm, the porosity of 0.5%, the tensile strength of 1200Mpa and the elastic modulus of 52 GPa.
Example 2
A preparation process of a basalt fiber reinforced thermoplastic polyethylene prepreg tape which is continuously needed comprises the following steps:
(1) 50 continuous basalt fiber yarn shafts are placed on a fiber creel, and are drawn into a filament separating plate to disperse single-bundle fibers, wherein the specification of the fibers is 450tex, and the diameter of the fibers is 6-10 mu m.
(2) Weighing thermoplastic polyethylene particles, pouring the thermoplastic polyethylene particles into a feeding port of a double-screw extruder, wherein the temperature of the feeding end of a charging barrel of the screw extruder is 120 ℃, the temperature of the middle section of the charging barrel of the screw extruder is 150 ℃, the temperature of the discharging section is 170 ℃ after uniform plasticization, and the discharging speed is 800 g/min.
(3) And (2) allowing the continuous fiber bundle to enter a dipping device through a traction device, wherein the traction force is 35kN, the traction speed is 0.65m/min, the continuous fiber bundle and the resin are fully dipped to form a plurality of polyethylene filaments which are arranged in parallel, and heating, curing and forming are carried out, wherein the curing temperature is 165 ℃, so that the fiber reinforced polyethylene rod is formed.
(4) And (3) leading a plurality of fiber reinforced polyethylene rods to enter a preforming die with the width of 350mm and the thickness of 0.8mm under the traction of a traction machine, and carrying out secondary heating, curing and forming at the curing temperature of 200 ℃ to form the basalt fiber reinforced thermoplastic polyethylene prepreg tape.
(5) The prepreg tape enters the coiling device through a traction device.
Tests show that the basalt fiber thermoplastic polyethylene prepreg tape prepared by the invention has the fiber volume content of 55%, the polyethylene volume content of 45%, the thickness of 0.8mm, the width of 350mm, the porosity of 0.45%, the tensile strength of 1180Mpa and the elastic modulus of 50 GPa.
Example 3
A preparation process of a basalt fiber reinforced thermoplastic polyethylene prepreg tape which is continuously needed comprises the following steps:
(1) 70 continuous basalt fiber yarn shafts are placed on a fiber creel, and are drawn into a filament separating plate to disperse single-bundle fibers, wherein the specification of the fibers is 750tex, and the diameter of the fibers is 7-13 mu m.
(2) Weighing thermoplastic polyethylene particles, pouring the thermoplastic polyethylene particles into a feeding port of a double-screw extruder, wherein the temperature of the feeding end of a charging barrel of the screw extruder is 135 ℃, the temperature of the middle section of the charging barrel of the screw extruder is 170 ℃, the temperature of the discharging section is 175 ℃ after uniform plasticization, and the discharging speed is 100 g/min.
(3) And (2) allowing the continuous fiber bundle to enter a dipping device through a traction device, wherein the traction force is 50kN, the traction speed is 0.5m/min, the continuous fiber bundle and the resin are fully dipped to form a plurality of polyethylene filaments which are arranged in parallel, and heating, curing and forming are carried out, wherein the curing temperature is 180 ℃, so that the fiber reinforced polyethylene rod is formed.
(4) And (3) leading a plurality of fiber reinforced polyethylene rods to enter a preforming die under the traction of a traction machine, carrying out secondary heating curing molding on the fiber reinforced polyethylene rods with the width of 850mm and the thickness of 2mm, and curing at the temperature of 180 ℃ to form the basalt fiber reinforced thermoplastic polyethylene prepreg tape.
(5) The prepreg tape enters the coiling device through a traction device.
Tests show that the basalt fiber thermoplastic polyethylene prepreg tape prepared by the invention has the fiber volume content of 40%, the polyethylene volume content of 60%, the thickness of 2mm, the width of 850mm, the porosity of 0.65%, the tensile strength of 1250Mpa and the elastic modulus of 53 GPa.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011081976.8A CN112248486A (en) | 2020-10-12 | 2020-10-12 | Basalt fiber reinforced thermoplastic polyethylene prepreg tape and preparation process thereof |
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| CN202011081976.8A CN112248486A (en) | 2020-10-12 | 2020-10-12 | Basalt fiber reinforced thermoplastic polyethylene prepreg tape and preparation process thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113059874A (en) * | 2021-02-08 | 2021-07-02 | 北京协同创新研究院 | Thermoplastic super-hybrid composite laminated board and preparation method thereof |
| CN114102906A (en) * | 2021-10-21 | 2022-03-01 | 南京玻璃纤维研究设计院有限公司 | Forming system and method for fiber bundle with micropores |
| CN114714539A (en) * | 2022-03-25 | 2022-07-08 | 泰州高得复合材料有限公司 | Continuous production device and application thereof, and method for continuously producing fiber reinforced thermoplastic composite material |
| CN115257009A (en) * | 2022-07-26 | 2022-11-01 | 吉林通鑫玄武岩科技股份有限公司 | A kind of processing equipment and processing technology of basalt fiber anti-glare board |
| CN116135508A (en) * | 2023-02-13 | 2023-05-19 | 华润水泥技术研发有限公司 | A device for manually preparing basalt fiber dipped yarn |
| CN117283903A (en) * | 2023-10-30 | 2023-12-26 | 南通东碳新材料科技有限公司 | Preparation device and method for continuous carbon fiber thermoplastic strips |
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| CN103407145A (en) * | 2013-08-08 | 2013-11-27 | 常州市吉沃橡塑机械有限公司 | Double-screw extruder |
| CN104552988A (en) * | 2014-12-30 | 2015-04-29 | 天津高盛钢丝绳有限公司 | Preparation method and preparation system for ultralight composite traction belt |
| CN105619842A (en) * | 2014-10-31 | 2016-06-01 | 林世平 | Two-in-one impregnation method and device for continuous fiber-reinforced thermoplastic prepreg belts |
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2020
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| CN101474868A (en) * | 2008-10-15 | 2009-07-08 | 上海杰事杰新材料股份有限公司 | Equipment for preparing continuous fiber reinforced thermoplastic resin composite material presoaked belt and use thereof |
| CN103407145A (en) * | 2013-08-08 | 2013-11-27 | 常州市吉沃橡塑机械有限公司 | Double-screw extruder |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113059874A (en) * | 2021-02-08 | 2021-07-02 | 北京协同创新研究院 | Thermoplastic super-hybrid composite laminated board and preparation method thereof |
| CN114102906A (en) * | 2021-10-21 | 2022-03-01 | 南京玻璃纤维研究设计院有限公司 | Forming system and method for fiber bundle with micropores |
| CN114714539A (en) * | 2022-03-25 | 2022-07-08 | 泰州高得复合材料有限公司 | Continuous production device and application thereof, and method for continuously producing fiber reinforced thermoplastic composite material |
| CN115257009A (en) * | 2022-07-26 | 2022-11-01 | 吉林通鑫玄武岩科技股份有限公司 | A kind of processing equipment and processing technology of basalt fiber anti-glare board |
| CN116135508A (en) * | 2023-02-13 | 2023-05-19 | 华润水泥技术研发有限公司 | A device for manually preparing basalt fiber dipped yarn |
| CN117283903A (en) * | 2023-10-30 | 2023-12-26 | 南通东碳新材料科技有限公司 | Preparation device and method for continuous carbon fiber thermoplastic strips |
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