CN111979599A - Preparation method of barium-containing developable functional polypropylene fiber - Google Patents
Preparation method of barium-containing developable functional polypropylene fiber Download PDFInfo
- Publication number
- CN111979599A CN111979599A CN202010781862.8A CN202010781862A CN111979599A CN 111979599 A CN111979599 A CN 111979599A CN 202010781862 A CN202010781862 A CN 202010781862A CN 111979599 A CN111979599 A CN 111979599A
- Authority
- CN
- China
- Prior art keywords
- polypropylene
- barium sulfate
- barium
- preparing
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
-
- 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
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/02—Inorganic materials
- A61L31/028—Other inorganic materials not covered by A61L31/022 - A61L31/026
-
- 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
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/04—Macromolecular materials
- A61L31/048—Macromolecular materials obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/14—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
-
- 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
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/14—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L31/18—Materials at least partially X-ray or laser opaque
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Animal Behavior & Ethology (AREA)
- Vascular Medicine (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgery (AREA)
- Chemical & Material Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Textile Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- Artificial Filaments (AREA)
- Multicomponent Fibers (AREA)
Abstract
The invention discloses a preparation method of barium-containing polypropylene fibers with developable functions, which comprises the following steps: preparing a polypropylene/barium sulfate composite material; step two: preparing a membrane material; step three: preparing polypropylene/barium sulfate composite fibers; step four: preparing the skin-core structure fiber. The invention adds a certain amount of barium salt which can be developed into polypropylene fiber which forms the macromolecular biological patch, and then the barium-containing developable polypropylene fiber is processed into the biological patch. The fiber adopts a skin-core structure, the polypropylene containing barium salt is arranged in a core layer, the skin layer is still polypropylene, the fiber still has good biocompatibility and mechanical property of the original polypropylene fiber, and meanwhile, diagnosis can be carried out through X-ray development. The invention has good physical properties and biological safety, and meets the clinical requirements; can effectively help doctors to check the hernia repair operation patients after operation, confirm whether the patch is contracture and displaced, and reduce the recurrence rate and risk of the patients after operation.
Description
Technical Field
The invention belongs to the field of biomedical engineering, and particularly relates to a preparation method of barium-containing polypropylene fibers with a developable function.
Background
Hernia refers to a local lump formed by a rupture or weakening of the peritoneum supporting an internal organ at a certain position due to surgical injury or disease, and the internal organ protruding outside the body through the rupture or weakening portion. Hernia generally occurs in the groin, waist, navel and other positions and can be divided into inguinal hernia, femoral hernia, umbilical hernia, incisional hernia, lumbar hernia and the like, hernia generally cannot be self-healed, walking and normal activities of patients are seriously affected, and serious threats are formed to human health and life, and intestinal ischemia necrosis can be caused and life is threatened if the hernia is not treated in time. The classic hernia repair is to sew and reinforce soft tissues, and the recurrence rate after the operation of the method is as high as 10-15%. The tensionless hernia repair is to repair a weak part by using a repair material.
The ideal hernia repair material has the physical characteristics that are not changed after being implanted into a human body and can resist mechanical stress; the chemical property is stable, and no harmful substance is generated; good biocompatibility, no inflammation reaction and foreign body reaction, no cancer and no sensitization. In addition, the patch material should also be very elastic and bendable; easy sewing; allowing collagen fibers to grow in; can resist infection and is easy to disinfect; no influence of body fluid.
Three synthetic patch materials which are widely used clinically at present are polyester patches, polypropylene patches and expanded polytetrafluoroethylene patches. The polyester patch of the three patch materials is basically abandoned due to the heavy foreign matter and inflammatory reaction, and the expanded polytetrafluoroethylene is high in price and cannot resist infection and pollution. The single-filament polypropylene patch which is commonly applied in the domestic market and has the largest use amount is produced by the United states Barde company, in recent years, the domestic polypropylene patch is rapidly developed, and various large-pore light polypropylene patches become research and development hot spots of various medical instrument companies.
The biological patch prepared from high polymer materials such as polypropylene and the like is widely used as a hernia patch in clinic, and infection after hernia repair is also one of more serious complications. Two infection factors exist, one is bacterial infection, and a large amount of published clinical statistical data at home and abroad indicate that the infection incidence rate after hernia repair is 6-10%; the other is that the high polymer material biological patch is twisted, and the irregular surface of the biological patch can stimulate and even damage surrounding tissues, thereby causing the formation of skin sinus and infection. The clinical treatment of these two infections is quite different. The former should be treated against infection, and the latter should be subjected to a secondary operation. At present, the two lesions are clinically distinguished by the clinical experience of doctors, sometimes cannot be distinguished, and only can be detected by operation, which brings extra pain and burden to patients.
Disclosure of Invention
The purpose of the invention is as follows: the invention provides a preparation method of barium-containing polypropylene fiber with a developable function, aiming at the problem that whether infection after hernia repair is clinically diagnosed only by operation exploration because an implanted biological patch is deformed and distorted or not can not be diagnosed by an imaging technology at present.
The technical scheme is as follows: a preparation method of barium-containing developable functional polypropylene fibers comprises the following steps:
the method comprises the following steps: preparation of polypropylene/barium sulfate composite material
Placing polypropylene resin and barium sulfate powder in a vacuum drying oven, drying at 80 ℃ for 24 hours, and performing melt blending on the materials by adopting a lateral feeding double-screw extruder capable of accurately metering to obtain a polypropylene/barium sulfate composite material;
step two: preparation of Membrane Material
Accurately weighing the polypropylene/barium sulfate composite material obtained in the step one, placing the weighed material in a PET (polyethylene terephthalate) mould with the thickness of 50-500 microns, and carrying out hot pressing by a flat vulcanizing instrument to obtain a polypropylene/barium sulfate composite film;
step three: preparation of polypropylene/barium sulfate composite fiber
Drying the polypropylene/barium sulfate composite material obtained in the step one, adding the dried polypropylene/barium sulfate composite material into a hopper of a double-screw extruder, and performing melt extrusion, liquid cooling, heat setting and rolling to obtain polypropylene/barium sulfate composite fibers;
step four: preparation of core-sheath structural fibers
Respectively drying the pure polypropylene resin and the polypropylene/barium sulfate composite material obtained in the step one, and ensuring that the water content of the raw material is 30 ppm; and respectively extruding the core layer component and the skin layer component by adopting a main double-screw extruder and an auxiliary double-screw extruder, and spinning by using a composite spinning box to obtain the product.
As an optimization: in the first step, the specific operations are as follows: adding all barium sulfate powder and half of polypropylene resin into two raw material bins of an extruder respectively according to a proportion, and feeding the raw material bins into a feeding port of the twin-screw extruder after the raw material bins are accurately metered by two twin-screw feeders; adding the other half of the polypropylene resin into a bin of a lateral feeder, accurately metering by a double-screw feeder, conveying into a main screw for blending, filtering by a melt filter, drawing strips, cooling and granulating to obtain a polypropylene/barium sulfate composite material;
as an optimization: the nine-section temperature of the double-screw extruder is respectively as follows: 145 ℃, 160 ℃, 170 ℃, 180 ℃, 190 ℃, 200 ℃, 190 ℃ and 190 ℃ of a neck ring mold; the lateral feed window of the lateral feed twin screw extruder was in the fourth heating zone.
As an optimization: the polypropylene resin is prepared from polypropylene resin granules, and the preparation method comprises the following steps: adding the polypropylene resin granules into an ultra-low temperature pulverizer, cooling by using liquid nitrogen, reducing the temperature to-50 ℃, and pulverizing and screening at low temperature to obtain qualified polypropylene resin powder.
As an optimization: the polypropylene resin is powder with the grain diameter of 10-300 meshes, and the barium sulfate powder has the grain diameter of 50nm-50 mu m.
As an optimization: in the melt filter, the aperture of a filter screen is determined according to the particle size of barium sulfate, and when the particle size of the selected barium sulfate is 5 mu m or less, the aperture of the filter screen is 500 meshes; when the grain diameter of the selected barium sulfate is larger than 5 mu m, the aperture of the filter screen is 10 times of the grain diameter of the selected barium sulfate.
As an optimization: in the second step, the hot pressing temperature is 190 ℃ for the upper heating plate, the temperature is 190 ℃ for the lower heating plate, the preheating time is 3min, the pressure maintaining pressure is 16MPa, and the pressure maintaining time is 10 s.
As an optimization: in the third step, the water content of the dried polypropylene/barium sulfate composite material is 30ppm, the temperature of each zone of the extruder is 200 ℃, 210 ℃, the liquid cooling temperature is 12 ℃, and the heat setting temperature is 110 ℃; the diameter of the straight fiber is 0.4-0.8 mm.
As an optimization: in the fourth step, the specific operations are as follows: melting and extruding the polypropylene/barium sulfate composite material from a main screw rod, and forming a core layer structure through a main spinning manifold; pure polypropylene resin is melted and extruded by an auxiliary screw rod and forms a skin layer structure by an auxiliary spinning box; the melt tows sprayed out by the composite spinning component are subjected to liquid cooling, heat setting and rolling to prepare monofilaments; wherein the screw temperatures are as follows: main screw rod: 190 ℃/200 ℃/210 ℃/210 ℃/200 ℃, auxiliary screw: 190 ℃/200 ℃/200 ℃/190 ℃/190 ℃; the temperature of the main spinning manifold is as follows: the temperature of the secondary spinning manifold is 190 ℃; the liquid cooling temperature is 60 ℃, and the heat setting temperature is 110 ℃; the diameter of the fiber is 0.3-0.8mm, the diameter of the core layer is 0.2-0.6mm, and the diameter of the skin layer ring is 0.1 mm.
As an optimization: the mass percentage of barium sulfate in the polypropylene/barium sulfate composite material is 20-40%.
Has the advantages that: the invention adds a certain amount of barium salt which can be developed into polypropylene fiber which forms the macromolecular biological patch, and then the barium-containing developable polypropylene fiber is processed into the biological patch. The fiber adopts a skin-core structure, the polypropylene containing barium salt is arranged in a core layer, the skin layer is still polypropylene, the fiber still has good biocompatibility and mechanical property of the original polypropylene fiber, and meanwhile, diagnosis can be carried out through X-ray development. The invention has good physical properties and biological safety, and meets the clinical requirements; can effectively help doctors to check the hernia repair operation patients after operation, confirm whether the patch is contracture and displaced, and reduce the recurrence rate and risk of the patients after operation.
The invention adds a certain amount of barium salt which can be developed into polypropylene fiber which forms the macromolecular biological patch, and then the barium-containing developable polypropylene fiber is processed into the biological patch. The fiber is characterized in that:
1. the patch prepared from the fiber can be used for judging whether the biological patch is twisted or not through X-ray inspection, so that a basis is provided for clinical diagnosis and treatment;
2. the content of the added barium salt is 20-40%, the developing effect is achieved, the content of the added barium salt is optimal for 30%, and meanwhile, the strength of the fiber is strong enough, so that the mechanical property of the biological patch is not influenced;
3. the fiber adopts a skin-core structure, the polypropylene containing barium salt is arranged in the core layer, the skin layer is still polypropylene, and the fiber still has good biocompatibility.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below so that those skilled in the art can better understand the advantages and features of the present invention, and thus the scope of the present invention will be more clearly defined. The embodiments described herein are only a few embodiments of the present invention, rather than all embodiments, and all other embodiments that can be derived by one of ordinary skill in the art without inventive faculty based on the embodiments described herein are intended to fall within the scope of the present invention.
Examples
A preparation method of barium-containing developable functional polypropylene fibers comprises the following steps:
the method comprises the following steps: preparation of polypropylene/barium sulfate composite material
And (2) placing the polypropylene resin and barium sulfate powder in a vacuum drying oven, drying for 24 hours at the temperature of 80 ℃, and performing melt blending on the materials by adopting a lateral feeding double-screw extruder capable of accurately metering to obtain the polypropylene/barium sulfate composite material. The specific operation is as follows: adding all barium sulfate powder and half of polypropylene resin into two raw material bins of an extruder respectively according to a proportion, and feeding the raw material bins into a feeding port of the twin-screw extruder after the raw material bins are accurately metered by two twin-screw feeders; and adding the other half of the polypropylene resin into a bin of a lateral feeder, accurately metering by a double-screw feeder, conveying into a main screw for blending, filtering by a melt filter, drawing, cooling and granulating to obtain the polypropylene/barium sulfate composite material.
The nine-section temperature of the double-screw extruder is respectively as follows: 145 ℃, 160 ℃, 170 ℃, 180 ℃, 190 ℃, 200 ℃, 190 ℃ and 190 ℃ of a neck ring mold; the lateral feed window of the lateral feed twin screw extruder was in the fourth heating zone.
The polypropylene resin is prepared from polypropylene resin granules, and the preparation method comprises the following steps: adding the polypropylene resin granules into an ultra-low temperature pulverizer, cooling by using liquid nitrogen, reducing the temperature to-50 ℃, and pulverizing and screening at low temperature to obtain qualified polypropylene resin powder.
The polypropylene resin is powder with the grain diameter of 10-300 meshes, and the barium sulfate powder has the grain diameter of 50nm-50 mu m. In the melt filter, the aperture of a filter screen is determined according to the particle size of barium sulfate, and when the particle size of the selected barium sulfate is 5 mu m or less, the aperture of the filter screen is 500 meshes; when the grain diameter of the selected barium sulfate is larger than 5 mu m, the aperture of the filter screen is 10 times of the grain diameter of the selected barium sulfate.
Step two: preparation of Membrane Material
Accurately weighing the polypropylene/barium sulfate composite material obtained in the step one, placing the weighed material in a PET (polyethylene terephthalate) mould with the thickness of 50-500 microns, and carrying out hot pressing by a flat vulcanizing instrument to obtain a polypropylene/barium sulfate composite film; the hot pressing temperature is 190 ℃ for the upper heating plate, the hot pressing temperature is 190 ℃ for the lower heating plate, the preheating time is 3min, the pressure maintaining pressure is 16MPa, and the pressure maintaining time is 10 s.
Step three: preparation of polypropylene/barium sulfate composite fiber
Drying the polypropylene/barium sulfate composite material obtained in the step one, adding the dried polypropylene/barium sulfate composite material into a hopper of a double-screw extruder, and performing melt extrusion, liquid cooling, heat setting and rolling to obtain polypropylene/barium sulfate composite fibers; the water content of the dried polypropylene/barium sulfate composite material is 30ppm, the temperature of each zone of the extruder is 200 ℃, 210 ℃, the liquid cooling temperature is 12 ℃, and the heat setting temperature is 110 ℃; the diameter of the straight fiber is 0.4-0.8 mm.
Step four: preparation of core-sheath structural fibers
Respectively drying the pure polypropylene resin and the polypropylene/barium sulfate composite material obtained in the step one, and ensuring that the water content of the raw material is 30 ppm; and respectively extruding the core layer component and the skin layer component by adopting a main double-screw extruder and an auxiliary double-screw extruder, and spinning by using a composite spinning box to obtain the product. The specific operation is as follows: melting and extruding the polypropylene/barium sulfate composite material from a main screw rod, and forming a core layer structure through a main spinning manifold; pure polypropylene resin is melted and extruded by an auxiliary screw rod and forms a skin layer structure by an auxiliary spinning box; the melt tows sprayed out by the composite spinning component are subjected to liquid cooling, heat setting and rolling to prepare monofilaments; wherein the screw temperatures are as follows: main screw rod: 190 ℃/200 ℃/210 ℃/210 ℃/200 ℃, auxiliary screw: 190 ℃/200 ℃/200 ℃/190 ℃/190 ℃; the temperature of the main spinning manifold is as follows: the temperature of the secondary spinning manifold is 190 ℃; the liquid cooling temperature is 60 ℃, and the heat setting temperature is 110 ℃; the diameter of the fiber is 0.3-0.8mm, the diameter of the core layer is 0.2-0.6mm, and the diameter of the skin layer ring is 0.1 mm. The mass percentage of barium sulfate in the polypropylene/barium sulfate composite material is 20-40%.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The barium sulfate content, inner core diameter, sheath-core diameter, tensile strength and development strength in the polypropylene fibers in examples 1 to 3 and comparative examples 1 to 2 are shown in table 1. It can be seen from the examples and comparative examples that when the mass percentage of barium sulfate is less than 20%, the development strength of the material is not clear, and when the mass percentage of sulfuric acid is more than 40%, the mechanical properties of the material are significantly reduced.
TABLE 1 comparison of mechanical properties of materials
The invention adds a certain amount of barium salt which can be developed into polypropylene fiber which forms the macromolecular biological patch, and then the polypropylene fiber which contains the barium salt and can be developed is processed into the biological patch. Therefore, whether the biological patch is twisted or not can be judged through X-ray examination, and a basis is provided for clinical diagnosis and treatment. Experiments show that the barium salt added in the polypropylene can be detected by X-ray cleaning at least to reach more than 10%, and the research shows that the content of the barium salt is more than 20% for clear development results. Research also finds that the mechanical property of the polypropylene is gradually reduced along with the increase of the content of the barium salt, when the content of the barium salt is more than 45%, the breaking strength of the polypropylene fiber is sharply reduced, and by considering the requirement of the mechanical property of the biological patch, systematic research and test find that the mechanical property of the polypropylene fiber can still be maintained at 30N/cm which is more than the requirement of 27N/cm as the patch when the content of the barium salt is less than 40%. When the content of barium salt is more than 40 percent, the mechanical properties of the polypropylene fiber, including strength and flexibility, can not meet the requirements.
The invention provides a barium salt-containing developable polypropylene fiber and a preparation method thereof, which can be judged by X-ray examination. The above examples and comparative examples are only intended to illustrate the present invention further, and it should be noted that modifications and improvements made on the concept of the present invention by those skilled in the art are also considered to be within the scope of the present invention.
Claims (10)
1. A preparation method of polypropylene fiber with barium-containing developable function is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: preparation of polypropylene/barium sulfate composite material
Placing polypropylene resin and barium sulfate powder in a vacuum drying oven, drying at 80 ℃ for 24 hours, and performing melt blending on the materials by adopting a lateral feeding double-screw extruder capable of accurately metering to obtain a polypropylene/barium sulfate composite material;
step two: preparation of Membrane Material
Accurately weighing the polypropylene/barium sulfate composite material obtained in the step one, placing the weighed material in a PET (polyethylene terephthalate) mould with the thickness of 50-500 microns, and carrying out hot pressing by a flat vulcanizing instrument to obtain a polypropylene/barium sulfate composite film;
step three: preparation of polypropylene/barium sulfate composite fiber
Drying the polypropylene/barium sulfate composite material obtained in the step one, adding the dried polypropylene/barium sulfate composite material into a hopper of a double-screw extruder, and performing melt extrusion, liquid cooling, heat setting and rolling to obtain polypropylene/barium sulfate composite fibers;
step four: preparation of core-sheath structural fibers
Respectively drying the pure polypropylene resin and the polypropylene/barium sulfate composite material obtained in the step one, and ensuring that the water content of the raw material is 30 ppm; and respectively extruding the core layer component and the skin layer component by adopting a main double-screw extruder and an auxiliary double-screw extruder, and spinning by using a composite spinning box to obtain the product.
2. The method for preparing the barium-containing developable functional polypropylene fiber according to claim 1, characterized in that: in the first step, the specific operations are as follows: adding all barium sulfate powder and half of polypropylene resin into two raw material bins of an extruder respectively according to a proportion, and feeding the raw material bins into a feeding port of the twin-screw extruder after the raw material bins are accurately metered by two twin-screw feeders; and adding the other half of the polypropylene resin into a bin of a lateral feeder, accurately metering by a double-screw feeder, conveying into a main screw for blending, filtering by a melt filter, drawing, cooling and granulating to obtain the polypropylene/barium sulfate composite material.
3. The method for preparing the barium-containing developable functional polypropylene fiber according to claim 2, characterized in that: the nine-section temperature of the double-screw extruder is respectively as follows: 145 ℃, 160 ℃, 170 ℃, 180 ℃, 190 ℃, 200 ℃, 190 ℃ and 190 ℃ of a neck ring mold; the lateral feed window of the lateral feed twin screw extruder was in the fourth heating zone.
4. The method for preparing the barium-containing developable functional polypropylene fiber according to claim 2, characterized in that: the polypropylene resin is prepared from polypropylene resin granules, and the preparation method comprises the following steps: adding the polypropylene resin granules into an ultra-low temperature pulverizer, cooling by using liquid nitrogen, reducing the temperature to-50 ℃, and pulverizing and screening at low temperature to obtain qualified polypropylene resin powder.
5. The method for preparing the barium-containing developable functional polypropylene fiber according to claim 2, characterized in that: the polypropylene resin is powder with the grain diameter of 10-300 meshes, and the barium sulfate powder has the grain diameter of 50nm-50 mu m.
6. The method for preparing the barium-containing developable functional polypropylene fiber according to claim 2, characterized in that: in the melt filter, the aperture of a filter screen is determined according to the particle size of barium sulfate, and when the particle size of the selected barium sulfate is 5 mu m or less, the aperture of the filter screen is 500 meshes; when the grain diameter of the selected barium sulfate is larger than 5 mu m, the aperture of the filter screen is 10 times of the grain diameter of the selected barium sulfate.
7. The method for preparing the barium-containing developable functional polypropylene fiber according to claim 1, characterized in that: in the second step, the hot pressing temperature is 190 ℃ for the upper heating plate, the temperature is 190 ℃ for the lower heating plate, the preheating time is 3min, the pressure maintaining pressure is 16MPa, and the pressure maintaining time is 10 s.
8. The method for preparing the barium-containing developable functional polypropylene fiber according to claim 1, characterized in that: in the third step, the water content of the dried polypropylene/barium sulfate composite material is 30ppm, the temperature of each zone of the extruder is 200 ℃, 210 ℃, the liquid cooling temperature is 12 ℃, and the heat setting temperature is 110 ℃; the diameter of the straight fiber is 0.4-0.8 mm.
9. The method for preparing the barium-containing developable functional polypropylene fiber according to claim 1, characterized in that: in the fourth step, the specific operations are as follows: melting and extruding the polypropylene/barium sulfate composite material from a main screw rod, and forming a core layer structure through a main spinning manifold; pure polypropylene resin is melted and extruded by an auxiliary screw rod and forms a skin layer structure by an auxiliary spinning box; the melt tows sprayed out by the composite spinning component are subjected to liquid cooling, heat setting and rolling to prepare monofilaments; wherein the screw temperatures are as follows: main screw rod: 190 ℃/200 ℃/210 ℃/210 ℃/200 ℃, auxiliary screw: 190 ℃/200 ℃/200 ℃/190 ℃/190 ℃; the temperature of the main spinning manifold is as follows: the temperature of the secondary spinning manifold is 190 ℃; the liquid cooling temperature is 60 ℃, and the heat setting temperature is 110 ℃; the diameter of the fiber is 0.3-0.8mm, the diameter of the core layer is 0.2-0.6mm, and the diameter of the skin layer ring is 0.1 mm.
10. The method for preparing the barium-containing developable functional polypropylene fiber according to claim 1, characterized in that: the mass percentage of barium sulfate in the polypropylene/barium sulfate composite material is 20-40%.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010781862.8A CN111979599A (en) | 2020-08-06 | 2020-08-06 | Preparation method of barium-containing developable functional polypropylene fiber |
| PCT/CN2021/070645 WO2022027927A1 (en) | 2020-08-06 | 2021-01-07 | Preparation method for barium-containing developable polypropylene fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010781862.8A CN111979599A (en) | 2020-08-06 | 2020-08-06 | Preparation method of barium-containing developable functional polypropylene fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111979599A true CN111979599A (en) | 2020-11-24 |
Family
ID=73445229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010781862.8A Pending CN111979599A (en) | 2020-08-06 | 2020-08-06 | Preparation method of barium-containing developable functional polypropylene fiber |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111979599A (en) |
| WO (1) | WO2022027927A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113549257A (en) * | 2021-08-18 | 2021-10-26 | 南通大学 | Developable traceable one-dimensional password material and preparation method and application thereof |
| WO2022027927A1 (en) * | 2020-08-06 | 2022-02-10 | 南通大学 | Preparation method for barium-containing developable polypropylene fiber |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115874333A (en) * | 2022-07-20 | 2023-03-31 | 江苏三元环保科技有限公司 | Manufacturing process of dust removal filter material |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0101650A2 (en) * | 1982-08-20 | 1984-02-29 | Vernon-Carus Limited | Radio opaque fibres |
| CN103948968A (en) * | 2014-05-13 | 2014-07-30 | 天津德岩科技有限公司 | In-vivo implanted composite material with X-ray developing performance and preparation method of in-vivo implanted composite material |
| CN104861303A (en) * | 2015-06-12 | 2015-08-26 | 福路明精密管材（北京）有限公司 | Medical polypropylene composite material and preparation method thereof |
| CN105903061A (en) * | 2016-05-25 | 2016-08-31 | 青岛明月生物医用材料有限公司 | Production technology of self-adhesion X-ray medical developing line and medical gauze |
| CN110522954A (en) * | 2019-09-17 | 2019-12-03 | 南通大学 | A kind of compound bio sticking patch and preparation method thereof that barium sulfate-containing can develop |
| CN111298205A (en) * | 2020-03-31 | 2020-06-19 | 杭州爱多倍生物科技有限公司 | Medicine-carrying composite hernia patch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111979599A (en) * | 2020-08-06 | 2020-11-24 | 南通大学 | Preparation method of barium-containing developable functional polypropylene fiber |
-
2020
- 2020-08-06 CN CN202010781862.8A patent/CN111979599A/en active Pending
-
2021
- 2021-01-07 WO PCT/CN2021/070645 patent/WO2022027927A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0101650A2 (en) * | 1982-08-20 | 1984-02-29 | Vernon-Carus Limited | Radio opaque fibres |
| CN103948968A (en) * | 2014-05-13 | 2014-07-30 | 天津德岩科技有限公司 | In-vivo implanted composite material with X-ray developing performance and preparation method of in-vivo implanted composite material |
| CN104861303A (en) * | 2015-06-12 | 2015-08-26 | 福路明精密管材（北京）有限公司 | Medical polypropylene composite material and preparation method thereof |
| CN105903061A (en) * | 2016-05-25 | 2016-08-31 | 青岛明月生物医用材料有限公司 | Production technology of self-adhesion X-ray medical developing line and medical gauze |
| CN110522954A (en) * | 2019-09-17 | 2019-12-03 | 南通大学 | A kind of compound bio sticking patch and preparation method thereof that barium sulfate-containing can develop |
| CN111298205A (en) * | 2020-03-31 | 2020-06-19 | 杭州爱多倍生物科技有限公司 | Medicine-carrying composite hernia patch |
Non-Patent Citations (4)
| Title |
|---|
| 孔萍: "《塑料配混技术》", 31 August 2009, 中国轻工业出版社 * |
| 张玉龙: "《纳米复合材料手册》", 31 July 2005, 中国石化出版社 * |
| 杨明山等: "《现代工程塑料改性：理论与实践》", 31 July 2009, 中国轻工业出版社 * |
| 耿孝正等: "《塑料混合及设备》", 29 February 1992, 中国轻工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022027927A1 (en) * | 2020-08-06 | 2022-02-10 | 南通大学 | Preparation method for barium-containing developable polypropylene fiber |
| CN113549257A (en) * | 2021-08-18 | 2021-10-26 | 南通大学 | Developable traceable one-dimensional password material and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022027927A1 (en) | 2022-02-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111979599A (en) | Preparation method of barium-containing developable functional polypropylene fiber | |
| Wu et al. | Regenerated chitin fibers reinforced with bacterial cellulose nanocrystals as suture biomaterials | |
| CN104368039B (en) | Medical absorbable suture line and preparation method thereof | |
| AU2020348320B2 (en) | Developable composite biological mesh containing barium sulfate and preparation method therefor | |
| CN101773689B (en) | Surgical repairing patch | |
| CN102526812A (en) | Biodegradable multi-layered hernia repairing sheet and preparation methods thereof | |
| CN1887364A (en) | Biodegradable medical extracorporeal fixing material possessing shape memory function | |
| CN108159498A (en) | A kind of preparation method of polyether-ether-ketone Biocomposite material | |
| CN102408628A (en) | Chitin-containing polymer master batch, air filtering net monofilament, its preparation method and application | |
| CN112007216A (en) | Absorbable suture anchor and preparation method thereof | |
| CN101890186A (en) | Method for preparing tensionless net cloth for repairing hernia | |
| CN111713780A (en) | Biodegradable antibacterial mask | |
| CN109847112A (en) | Enhanced absorbable intraluminal stent of one kind and preparation method thereof | |
| EP3305340B1 (en) | Cell-growing scaffold having structure memory property | |
| CN107815079A (en) | A kind of medical nano fiber-reinforced composites and preparation method thereof | |
| WO2023190074A1 (en) | Melt-blown nonwoven fabric and hygienic material | |
| CN111001043A (en) | Absorbable self-locking cervical fusion cage and preparation method thereof | |
| CN107674277B (en) | Preparation method of radiation-resistant antibacterial plastic, product and application thereof | |
| CN104963092A (en) | Preparation device and method for non-woven high polymer material optilene mesh | |
| CN108641316A (en) | A kind of polymer composite, preparation and application | |
| CN110613529A (en) | Developable patch and preparation method thereof | |
| CN112007214A (en) | Phosphate glass reinforced 3D printing wire and preparation method thereof | |
| CN113549257B (en) | Developable traceable one-dimensional password material and preparation method and application thereof | |
| WO2020006615A1 (en) | Method for producing a polymer composite for use in orthopaedic devices and products thus produced | |
| CN114949353B (en) | Biological function differentiated adaptive musculoskeletal system prosthesis and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201124 |
|
| RJ01 | Rejection of invention patent application after publication |