CN112007214A - Phosphate glass reinforced 3D printing wire and preparation method thereof - Google Patents
Phosphate glass reinforced 3D printing wire and preparation method thereof Download PDFInfo
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- CN112007214A CN112007214A CN202010688728.3A CN202010688728A CN112007214A CN 112007214 A CN112007214 A CN 112007214A CN 202010688728 A CN202010688728 A CN 202010688728A CN 112007214 A CN112007214 A CN 112007214A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/40—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material
- A61L27/44—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material having a macromolecular matrix
- A61L27/46—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material having a macromolecular matrix with phosphorus-containing inorganic fillers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
- B33Y70/10—Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2430/00—Materials or treatment for tissue regeneration
- A61L2430/02—Materials or treatment for tissue regeneration for reconstruction of bones; weight-bearing implants
Abstract
The invention provides a phosphate glass reinforced 3D printing wire material, which comprises 1-70% of phosphate glass and 30-99% of a polymer matrix. This patent also proposes the preparation of wires containing different phosphate glass reinforcements. Compared with the prior art, the invention gives more definite definition to the chemical components of the phosphate glass, and based on the definition, the range of the types of the phosphate glass suitable for the method is expanded; the content of the phosphate glass reinforcement is improved, and the content of the filler of the phosphate glass reinforcement can be more accurately controlled and blended by means of preparing a master batch/premix; the prepared wire material can be well compatible with a series of fused deposition manufacturing equipment, and the prepared composite material has good mechanical property and human absorbability, and is beneficial to realizing individual precise treatment of orthopedic diseases.
Description
Technical Field
The invention relates to the field of material science, in particular to a 3D printing consumable of a phosphate glass reinforced polymer and a preparation method thereof.
Background
The fracture and bone defect are common diseases in orthopedics, which not only bring pain to patients, but also cause that the bones can not play the functions of bearing loads and assisting movement, and bring great inconvenience to the lives of the patients. The most direct effective treatment method for orthopedic diseases is to implant medical instruments having specific functions to the affected parts. For example, the fracture can be treated by installing a fracture internal fixation plate which can share the bone load and prevent the displacement between the fractured bones through an anatomical reduction-internal fixation operation on the fractured bones; and the bone tissue engineering scaffold which has a through porous structure and can promote bone regeneration is used for filling the defect part of the bone, so that the bone regeneration is guided, and the bone defect is repaired.
An ideal orthopaedic implant should have the following elements. Firstly, the mechanical properties of the implant should be similar to those of peripheral bones (the fracture internal fixation plate is used for cortical bone, and the bone tissue engineering scaffold is used for cancellous bone), so as to ensure the bearing capacity of the implant. Secondly, the implant should be gradually absorbed by the body during the treatment process, thereby providing space for bone regeneration and providing the necessary load bearing stimulation for the remodeling of the new bone. Thirdly, the orthopedic implant should be well matched with the shape of the bone of the affected part, so that the orthopedic implant can exert the mechanical fixing function to the maximum extent and avoid loosening from the affected part. The composite material taking the human body absorbable thermoplastic polymer as the matrix and the phosphate glass powder/fiber as the reinforcement can comprehensively meet the requirements of mechanical property and human body absorbability. The additive manufacturing (commonly known as "3D printing" technology) based on Fused deposition manufacturing (Fused deposition modeling) principle is particularly suitable for efficient and accurate molding preparation of orthopedic implants with complex shapes and precise structures by using the composite material as a raw material.
To manufacture an orthopaedic implant from phosphate glass fiber reinforced composite material by fused deposition manufacturing, a composite material filament consumable (hereinafter referred to as "filament") for fused deposition manufacturing must first be obtained. The material composition of the wire determines the properties of the composite material, while wires of different compositions differ in the manufacturing process. The components of the material and the preparation method have important influence on various properties of the orthopedic implant.
In a similar patent that has been published so far, patent 107011641 states the preparation of hydroxyapatite, polycaprolactone filaments, where the hydroxyapatite used is absorbed by the human body at a slow rate. Patent CN10901923A includes the related statement of mixing, extruding polylactic acid filaments containing phosphate glass powder/particles in a twin screw extruder. The drawbacks of this technique include: firstly, the upper limit of the mass fraction of phosphate glass powder/short fiber contained in the wire is 15%, and the content of the reinforcement is low, so that the prepared orthopedic implant is limited in mechanical property. Secondly, in the process of preparing the wire by using the double-screw extruder, the reinforcement is generally subjected to volume type vibration blanking, phosphate glass is usually accumulated at a discharge port in the blanking process, so that the blanking amount is obviously fluctuated, and the prepared wire is not uniform in components and performance. And the requirement on equipment cost is higher when the weight loss scale is used for blanking. Thirdly, the pressure fluctuation of the composite material melt is large in the process of double-screw extrusion, and the problems of low wire roundness and large diameter fluctuation easily occur when the wire is directly extruded by double screws. Patent CN106633713A describes a method for preparing in-situ phosphate glass fiber reinforced polymer filament. The drawback of this technique is that there are restrictive requirements (70-300 ℃) on the glass transition temperature of phosphate glass fibers, which are not very suitable for phosphate glass fibers for orthopaedic implants (glass transition temperature is typically 450-650 ℃). Meanwhile, in the scheme, a cooling water tank is used for cooling and sizing the extruded wire, and the step may cause water vapor to invade and stay in the wire to form bubble type defects.
Disclosure of Invention
In order to overcome the defects, the invention provides a phosphate glass reinforced 3D printing wire and a preparation method thereof, and the invention is realized as follows:
a phosphate glass reinforced 3D printing wire comprises 1-70% of phosphate glass and 30-99% of a polymer matrix by mass fraction; the phosphate glass is an inorganic nonmetallic compound containing not less than 45 mol% of phosphorus pentoxide; the polymer matrix is a thermoplastic polymer and comprises one or more of levorotatory polylactic acid, poly D, L lactide and polycaprolactone in any proportion, and the polymer matrix comprises granules or powder; the wire is in a continuous wire shape, and the cross section of the wire is in a circular shape with the diameter of 1.00-3.00 mm.
The phosphate glass is glass particles, the size of the glass particles being <50 μm.
The phosphate glass is glass microspheres, the glass microspheres are solid or hollow microspheres, and the diameter of the glass microspheres is less than 50 mu m.
The phosphate glass is short fiber, and the average length of the short fiber is 1-500 mu m.
The phosphate glass is a continuous long fiber.
The phosphate glass is the combination of any one of glass particles, glass microspheres and short fibers and continuous long fibers.
When the phosphate glass is any one of glass particles, glass microspheres and short fibers, the preparation method of the wire comprises the following steps:
(1) taking the components according to the mass parts, and then placing the components in a blast oven or a vacuum oven at the temperature of 40-120 ℃ for drying for 2-24 hours;
(2) adding the dried composition into a stirring cavity of an internal mixer preheated to 120-250 ℃, preserving heat for 5-30 minutes, and then stirring at a rotor speed of 10-40rpm for 5-30 minutes to obtain a master batch;
(3) cooling the master batch to room temperature, and then placing the master batch into a plastic crusher to be crushed into plastic particles with the particle size of less than 5 mm;
(4) adding plastic particles into a desktop single-screw wire extruder, wherein the screw rotating speed is 20-70rpm, the temperature range of a preheating zone and a working zone of the extruder is 180-;
(5) extruding the molten master batch through a circular neck mold with the diameter of 1.8-3.0mm, and carrying out air cooling, cooling and shaping on the extruded material by adopting a fan with the rotating speed of 0-2000 rpm;
(6) and (4) enabling the shaped wires to sequentially pass through a tension roller, a guide wheel and a traction wheel, and finally collecting the wires on a winding motor.
When the phosphate glass is any one of glass particles, glass microspheres and short fibers, the preparation method of the wire comprises the following steps:
(1) taking the components according to the mass parts, and then placing the components in a forced air oven or a vacuum oven at 45-120 ℃ for drying for 2-24 hours;
(2) adding the dried composition into a stirrer, and mechanically stirring to obtain powdery premix;
(3) adding the premix into a desktop single-screw wire extruder, wherein the screw rotation speed is 20-70rpm, the temperature ranges of a preheating zone and a working zone of the extruder are 180-;
(5) extruding the molten premix through a circular neck mold with the diameter of 1.8-3.0mm, and performing air cooling, cooling and shaping on the extruded material by adopting a fan with the rotating speed of 0-2000 rpm;
(6) and (4) enabling the shaped wires to sequentially pass through a tension roller, a guide wheel and a traction wheel, and finally collecting the wires on a winding motor.
When the phosphate glass is any one of continuous long fibers or a combination of glass particles, glass microspheres and short fibers and the continuous long fibers, the preparation method of the wire comprises the following steps:
(1) putting the phosphate glass and the polymer matrix into a forced air oven or a vacuum oven at 45-120 ℃ for drying for 2-24 hours;
(2) phosphate glass passes through a fiber coating die which is directly arranged at an extrusion port of a desktop single-screw wire extruder, when the phosphate glass is in work, the fiber coating die is heated by an independent heating module, then a polymer matrix is added into the wire extruder and sequentially enters a preheating zone and a working zone of the extruder, the screw rotating speed of the screw wire extruder is 20-70rpm, the temperature of the coating die, the temperature of the preheating zone of the extruder and the temperature of the working zone of the extruder are in the range of 180 DEG and 240 DEG, the temperature of the coating die < the temperature of the preheating zone < the temperature of the working zone, and the temperature difference of adjacent working procedures is not more than 15 ℃, under the condition, the molten polymer matrix is extruded into the fiber coating die at a constant speed, and phosphate glass yarns are continuously drawn to one direction by a drawing wheel so as to continuously coat the molten polymer matrix, shaping through a 1.00-2.00mm round mouth mold, and reasonably adjusting the traction speed within the range of 1-10cm/s and the content of the coated polymer matrix to achieve the target of the distribution ratio of the components;
(3) carrying out air cooling, cooling and shaping on the shaped wires by a fan with the rotating speed of 0-2000 rpm;
(4) and (4) enabling the shaped wires to sequentially pass through a tension roller, a guide wheel and a traction wheel, and finally collecting the wires on a winding motor.
The invention has the beneficial effects that:
the chemical composition of phosphate glass is more clearly defined than that of similar patent, so that the range of the phosphate glass suitable for the method is expanded; the content of the phosphate glass reinforcement is improved, and the content of the filler of the phosphate glass reinforcement can be more accurately controlled and blended by means of preparing a master batch/premix; broadening the morphology of phosphate glass reinforcement to include: micro/nano particles, microspheres and short fibers with the average length of 1-500 mu m, three fillers in total, and continuous fibers; the preparation method comprises the steps of preparing filler reinforced wires by an indirect method or a direct method, and preparing continuous fiber reinforced wires by a coating method; the prepared wire material can be well compatible with a series of fused deposition manufacturing equipment, and the prepared composite material has good mechanical property and human absorbability, and is beneficial to realizing individual precise treatment of orthopedic diseases.
Drawings
FIG. 1 is a flow chart of indirect method for making filler reinforced wire;
FIG. 2 is a flow chart of the direct method for making filler reinforced wire;
FIG. 3 is a flow chart of a coating process for preparing continuous fiber reinforced filaments;
FIG. 4 is a graph of the actual content of phosphate glass fiber reinforcement in the filaments of the example tested by thermogravimetric analysis;
FIG. 5 shows the results of the bending performance test of 3D printed samples of example filaments.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The first of this patent proposes a formulation of a filiform consumable for Fused Deposition Manufacturing (FDM) comprising phosphate glass as reinforcement. Wherein the phosphate glass refers to a chemical composition containing: not less than 45 mol% of phosphorus pentoxide.
The morphology of phosphate glass includes micro/nano-sized glass particles (preferably with a particle size <50 μm), solid/hollow microspheres (preferably with a microsphere diameter <50 μm), short fibers (collectively referred to as phosphate glass fiber fillers, abbreviated as "fillers" above) having an average length of 1 to 500 μm (preferably with a length <150 μm), and continuous long fibers. The mass fraction of the phosphate glass in the wire is 1-70%.
The matrix of the silk material is a thermoplastic polymer, and comprises one or more of copolymer of levorotatory polylactic acid (PLLA, also used as a preferred material), poly D, L lactide (PDLLA) and Polycaprolactone (PCL), and the shape of the matrix comprises granules and powder. The mass fraction of the matrix polymer in the wire is in the range of corresponding 100% -phosphate glass mass fraction.
The shape of the wire material is a continuous wire shape with a circular section and a diameter of 1.00mm-3.00 mm.
The patent also proposes a preparation method for wires containing different phosphate glass reinforcements, which is divided into two types: the filler reinforced wire material adopts a method of mechanical blending-melting-single screw extrusion-air cooling shaping; the continuous fiber reinforced silk adopts a polymer infiltration coating-polymer curing and shaping method.
The following methods for preparing filler-reinforced filaments and continuous fiber-reinforced filaments are illustrated respectively:
example 1 phosphate glass staple fiber (20%) -L-polylactic acid filament (filler reinforced filament prepared by indirect method)
60g of phosphate glass fiber (the average length of the glass fiber is 120 μm) and 240g of L-polylactic acid pellets (the average particle size is about 5.0mm) were weighed in a mass ratio of 1:4, respectively, and then dried in a forced air oven or a vacuum oven at 80 ℃ for 3 hours.
Adding the dried phosphate glass fiber and the levorotatory polylactic acid into a stirring cavity of an internal mixer preheated to 200 ℃ in advance, preserving the heat for 10 minutes, and then stirring for 10 minutes at a rotor speed of 20rpm to obtain the master batch.
The masterbatch was cooled to room temperature and then broken up in a plastic crusher into plastic particles <5 mm.
The plastic particles were added to a table top single screw filament extruder with a preheating zone temperature of 205 deg.C, a working zone temperature of 210 deg.C and a screw speed of 30 rpm. And extruding the molten master batch through a circular neck mold with the diameter of 2.0mm/3.0mm, carrying out air cooling and shaping on the extruded material by adopting a fan at 1000rpm, sequentially passing the shaped wires through a tension roller, a guide wheel and a traction wheel, and finally collecting the wires with the diameter of 1.75mm/2.85mm on a winding motor. The wire was used as a raw material and was produced into a model by fused deposition, wherein the average length of short fibers contained in the wire was reduced to 93 μm, the bending strength was 82MPa, and the bending modulus was 4.6GPa
EXAMPLE 2 phosphate glass staple fiber (20%) Filler-Laevo-polylactic acid wire (Filler-reinforced wire prepared by direct Process)
60g of phosphate glass fiber (the average length of the glass fiber is 120 mu m) and 240g of L-polylactic acid powder (the average particle size is about 0.8mm) are weighed according to the mass ratio of 1:4, and then the mixture is placed in a blast oven or a vacuum oven at 80 ℃ to be dried for 3 hours.
The difference from example 1 is that the dried phosphate glass fiber and the levorotatory polylactic acid powder are added into a stirrer and mechanically stirred to obtain powdery premix.
The premix was added to a table top single screw filament extruder with a preheating zone temperature of 205 deg.C, a working zone temperature of 210 deg.C and a screw speed of 30 rpm. Extruding the fused premix through a circular die with the diameter of 2.00mm/3.00mm, cooling and shaping the extruded material by adopting a fan at 1000rpm, sequentially passing the shaped wire through a tension roller, a guide wheel and a traction wheel, and finally collecting the wire with the diameter of 1.75mm/2.85mm (the wire is used as a raw material and is manufactured into a model through fused deposition on a winding motor, wherein the average length of short fibers contained in the wire is reduced to 114 mu m, the bending strength is 93MPa, the bending modulus is 5.5GPa, the phosphate glass continuous fiber (20%) -levorotatory polylactic acid wire (continuous fiber reinforced wire prepared by a coating method)
And (3) putting the yarns of the phosphate glass continuous fibers and the levorotatory polylactic acid granules into a blowing oven or a vacuum oven at 80 ℃ for drying for 3 hours.
Subsequently, the phosphate glass continuous fiber yarn was passed through a fiber-coating die, which was mounted directly to the extrusion port of a table-top single-screw filament extruder. In operation, the fiber-covered mold is heated to 200 ℃ by a separate heating module. Subsequently, the pellets of L-polylactic acid were fed into a filament extruder at a preheating zone temperature of 205 ℃, a working zone temperature of 210 ℃ and a screw rotation speed of 30 rpm. Under the condition, the molten L-polylactic acid is extruded into a fiber coating die at a constant speed, and the glass fiber yarn is continuously drawn to one direction by a drawing wheel, so that the molten L-polylactic acid is continuously coated and shaped through a circular die with the diameter of 1.00 mm. The content of the coated polylactic acid is adjusted by reasonably adjusting the traction speed to be 3cm/s, so that the aim that the content of the continuous fibers accounts for 20% of the mass of the wire material is achieved. The molded wires are subjected to air cooling and temperature reduction setting by a fan at 1000rpm, then sequentially pass through a tension roller, a guide wheel and a traction wheel, and finally are collected on a winding motor to be wires with the diameter of 1.00 mm. The wire is used as a raw material and is manufactured into a model through fused deposition, the bending strength is 104MPa, and the bending modulus is 7.2 GPa.
Claims (10)
1. A phosphate glass reinforced 3D printing wire material is characterized in that: calculated by mass fraction, comprises 1-70% of phosphate glass and 30-99% of polymer matrix; the phosphate glass is an inorganic nonmetallic compound containing not less than 45 mol% of phosphorus pentoxide; the polymer matrix is a thermoplastic polymer and comprises one or more of copolymers of L-polylactic acid, poly D, L-lactide and polycaprolactone, and the polymer matrix comprises granules or powder; the wire is in a continuous wire shape, and the cross section of the wire is in a circular shape with the diameter of 1.00-3.00 mm.
2. The phosphate glass reinforced 3D printing wire of claim 1, wherein: the phosphate glass is glass particles, the size of the glass particles being <50 μm.
3. The phosphate glass reinforced 3D printing wire of claim 1, wherein: the phosphate glass is glass microspheres, the glass microspheres are solid or hollow microspheres, and the diameter of the glass microspheres is less than 50 mu m.
4. The phosphate glass reinforced 3D printing wire of claim 1, wherein: the phosphate glass is short fiber, and the average length of the short fiber is 1-500 mu m.
5. The phosphate glass reinforced 3D printing wire of claim 1, wherein: the phosphate glass is a continuous long fiber.
6. The phosphate glass reinforced 3D printing wire of claim 1, wherein: the phosphate glass is the combination of any one of glass particles, glass microspheres and short fibers and continuous long fibers.
7. A process for the preparation of a product according to any one of claims 2 to 4, characterized in that it comprises the following steps:
(1) taking the components according to the mass parts, and then placing the components in a forced air oven or a vacuum oven at 45-120 ℃ for drying for 2-24 hours;
(2) adding the dried composition into a stirring cavity of an internal mixer preheated to 120-250 ℃, preserving heat for 5-30 minutes, and then stirring at a rotor speed of 10-40rpm for 5-30 minutes to obtain a master batch;
(3) cooling the masterbatch to room temperature and then crushing the masterbatch in a plastic crusher into masterbatch particles of <5 mm;
(4) adding the master batch particles into a desktop single-screw wire extruder, wherein the screw rotating speed is 20-70rpm, the temperature range of a preheating zone and a working zone of the extruder is 180-;
(5) extruding the molten master batch through a circular neck mold with the diameter of 1.8-3.0mm, and carrying out air cooling, cooling and shaping on the extruded material by adopting a fan with the rotating speed of 0-2000 rpm;
(6) and (4) enabling the shaped wires to sequentially pass through a tension roller, a guide wheel and a traction wheel, and finally collecting the wires on a winding motor.
8. A process for the preparation of a product according to any one of claims 2 to 4, characterized in that:
(1) taking the components according to the mass parts, and then placing the components in a forced air oven or a vacuum oven at 45-120 ℃ for drying for 2-24 hours;
(2) adding the dried composition into a stirrer, and mechanically stirring to obtain powdery premix;
(3) adding the premix into a desktop single-screw wire extruder, wherein the screw rotation speed is 20-70rpm, the temperature ranges of a preheating zone and a working zone of the extruder are 180-;
(5) extruding the molten premix through a circular neck mold with the diameter of 1.8-3.0mm, and performing air cooling, cooling and shaping on the extruded material by adopting a fan with the rotating speed of 0-2000 rpm;
(6) and (4) enabling the shaped wires to sequentially pass through a tension roller, a guide wheel and a traction wheel, and finally collecting the wires on a winding motor.
9. The method of manufacturing the product of claim 5, wherein:
(1) putting the phosphate glass and the polymer matrix into a forced air oven or a vacuum oven at 45-120 ℃ for drying for 2-24 hours;
(2) phosphate glass passes through a fiber coating die which is directly arranged at an extrusion port of a desktop single-screw wire extruder, when the phosphate glass is in work, the fiber coating die is heated by an independent heating module, then a polymer matrix is added into the wire extruder and sequentially enters a preheating zone and a working zone of the extruder, the screw rotating speed of the screw wire extruder is 20-70rpm, the temperature of the coating die, the temperature of the preheating zone of the extruder and the temperature of the working zone of the extruder are in the range of 180 DEG and 240 DEG, the temperature of the coating die < the temperature of the preheating zone < the temperature of the working zone, and the temperature difference of adjacent working procedures is not more than 15 ℃, under the condition, the molten polymer matrix is extruded into the fiber coating die at a constant speed, and phosphate glass yarns are continuously drawn to one direction by a drawing wheel so as to continuously coat the molten polymer matrix, shaping through a 1.00-2.00mm round mouth mold, and reasonably adjusting the traction speed within the range of 1-10cm/s and the content of the coated polymer matrix to achieve the target of the distribution ratio of the components;
(3) carrying out air cooling, cooling and shaping on the shaped wires by a fan with the rotating speed of 0-2000 rpm;
(4) and (4) enabling the shaped wires to sequentially pass through a tension roller, a guide wheel and a traction wheel, and finally collecting the wires on a winding motor.
10. The method of manufacturing the product of claim 6, wherein:
(1) putting the phosphate glass and the polymer matrix into a forced air oven or a vacuum oven at 45-120 ℃ for drying for 2-24 hours;
(2) phosphate glass passes through a fiber coating die which is directly arranged at an extrusion port of a desktop single-screw wire extruder, when the phosphate glass is in work, the fiber coating die is heated by an independent heating module, then a polymer matrix is added into the wire extruder and sequentially enters a preheating zone and a working zone of the extruder, the screw rotating speed of the screw wire extruder is 20-70rpm, the temperature of the coating die, the temperature of the preheating zone of the extruder and the temperature of the working zone of the extruder are in the range of 180 DEG and 240 DEG, the temperature of the coating die < the temperature of the preheating zone < the temperature of the working zone, and the temperature difference of adjacent working procedures is not more than 15 ℃, under the condition, the molten polymer matrix is extruded into the fiber coating die at a constant speed, and phosphate glass yarns are continuously drawn to one direction by a drawing wheel so as to continuously coat the molten polymer matrix, shaping through a 1.00-2.00mm round mouth mold, and reasonably adjusting the traction speed within the range of 1-10cm/s and the content of the coated polymer matrix to achieve the target of the distribution ratio of the components;
(3) carrying out air cooling, cooling and shaping on the shaped wires by a fan with the rotating speed of 0-2000 rpm;
(4) and (4) enabling the shaped wires to sequentially pass through a tension roller, a guide wheel and a traction wheel, and finally collecting the wires on a winding motor.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116036386A (en) * | 2023-02-22 | 2023-05-02 | 天津纳博特医疗器械有限公司 | Absorbable glass fiber reinforced polylactic acid composite material and craniomaxillofacial nail plate system |
| CN116036386B (en) * | 2023-02-22 | 2024-04-30 | 天津纳博特医疗器械有限公司 | Absorbable glass fiber reinforced polylactic acid composite material and craniomaxillofacial nail plate system |
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