CN108888316B - Antibacterial trouka - Google Patents
Antibacterial trouka Download PDFInfo
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- CN108888316B CN108888316B CN201810485525.7A CN201810485525A CN108888316B CN 108888316 B CN108888316 B CN 108888316B CN 201810485525 A CN201810485525 A CN 201810485525A CN 108888316 B CN108888316 B CN 108888316B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00831—Material properties
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Abstract
The invention discloses an antibacterial type qulu clamp which comprises a metal needle body and a plastic connecting piece, wherein the plastic connecting piece comprises a main disc, the main disc is provided with a mounting groove, the bottom of the main disc is provided with an extension pipe communicated with the mounting groove, a mounting block is arranged on a puncture needle, the mounting block is embedded into the mounting groove, the puncture needle penetrates out of the extension pipe, a branch pipe is arranged on the extension pipe, the puncture needle is provided with a through hole communicated with the branch pipe, the mounting groove is provided with two positioning holes towards the direction of the extension pipe, the mounting block is provided with a positioning block used for penetrating out of the positioning holes, the positioning block is provided with an insertion hole at the position penetrating out of the positioning hole, the main disc is provided with a plug pin used for inserting the insertion hole, and the main disc is also provided with a; the plastic connecting piece is made of an antibacterial high polymer material. The trouka prepared by the method has better antibacterial performance.
Description
Technical Field
The invention relates to a medical instrument, in particular to an antibacterial trouca.
Background
Trocar, in english, specifically a trocar. The trocar is a commonly used medical instrument, and is mainly used for laparoscopic surgery, and the laparoscopic surgery is a minimally invasive surgery, and is an endoscopic surgery for examination or treatment in a closed basin or an abdominal cavity, and is divided into a diagnostic laparoscopic surgery and an operative laparoscopic surgery. The laparoscope which is connected with the cold light source for illumination is inserted into the abdominal cavity through the abdominal wall by a tiny incision of the abdominal wall, the laparoscope is connected with a camera system, the pelvic cavity and the viscera in the abdominal cavity are dissected and displayed under a monitoring screen, and an operator checks the pelvic cavity through the monitoring screen to confirm the diseases, which is called diagnostic laparoscopic surgery; the operation of operating the operating instruments inserted into the basin and the abdominal cavity outside the abdominal cavity to directly view the monitoring screen for disease operation treatment is called surgical laparoscopic operation.
The trocar generally has a metal needle tube to and the plastic connecting piece of connecting the needle tube, in laparoscopic surgery, need go on under aseptic condition, also have certain requirement to the wear resistance of plastic connecting piece simultaneously, but does not have a macromolecular material that does not accomplish antibiotic but can play wear-resisting effect in the market at present.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an antibacterial and wear-resistant trouca for a plastic connecting piece.
In order to achieve the purpose, the invention provides the following technical scheme:
the puncture needle comprises a metal needle body and a plastic connecting piece, wherein the plastic connecting piece comprises a main disc, the main disc is provided with a mounting groove, the bottom of the main disc is provided with an extension pipe communicated with the mounting groove, the puncture needle is provided with a mounting block, the mounting block is embedded into the mounting groove, the puncture needle penetrates out of the extension pipe, the extension pipe is provided with a branch pipe, the puncture needle is provided with a through hole communicated with the branch pipe, the mounting groove is provided with two positioning holes towards the direction of the extension pipe, the mounting block is provided with a positioning block for penetrating out of the positioning holes, the positioning block penetrates out of the positioning holes and is provided with an insertion hole, the main disc is provided with a plug pin for inserting the insertion hole, and the main disc is also provided with;
the plastic connecting piece is made of antibacterial high polymer materials:
the antibacterial high polymer material comprises the following components in parts by weight:
polypropylene: 100 portions of
Antibacterial agents: 0.5 portion
Modified graphene: 5 portions of
Blending agent: 3 portions of
Silane coupling agent: 5 parts of the raw materials.
As a further improvement of the invention: the pushing mechanism comprises a hinge rod hinged on the main disc, an arc-shaped block is arranged on the hinge rod, and the arc-shaped block pushes the inserted rod to move towards the insertion hole after the hinge rod rotates;
the antimicrobial agent is zeolite silver.
As a further improvement of the invention: the arc piece is the cylinder that the cross-section is the quarter circle, the radius of cross-section circle is the same with the thickness of articulated arm, the arc piece includes an arcwall face, the arcwall face sets up to the master disc dorsad.
As a further improvement of the invention:
one side of the hinged rod, which is back to the arc-shaped block, extends towards the extension pipe, and when the hinged rod moves towards the positioning hole, the positioning block is pushed to move out of the positioning hole.
As a further improvement of the invention:
the main disc is provided with a buckling groove, and the hinge rod is provided with a buckle buckled in the buckling groove;
the modified graphene comprises the following components in parts by mass:
graphene: 100 portions of
1, 3-difluoro-5- [2- (trimethylsilyl) ethynyl ] benzene: 5 portions of
N-methyl-N- (trimethylsilyl) trifluoroacetamide: 1 part of
(oxymethyl acrylate) methyldiethoxysilane: and 2 parts.
As a further improvement of the invention: the bottom of the main disc is provided with an installation plate, and the hinge rod is hinged on the installation plate;
the preparation method of the modified graphene comprises the following steps:
step A: oxidizing graphene to prepare graphene oxide;
and B: dispersing 1, 3-difluoro-5- [2- (trimethylsilyl) ethynyl ] benzene, N-methyl-N- (trimethylsilyl) trifluoroacetamide, (acryloxymethyl) methyldiethoxysilane in an acetone solution;
and C: and (3) adding graphene oxide into the acetone solution obtained in the step two, uniformly mixing, and reacting at 60 ℃ for 12 hours to obtain the modified graphene.
As a further improvement of the invention: the bottom of the main plate is provided with a sliding groove, the bolt is provided with a sliding block, the sliding block is connected in the sliding groove in a sliding manner, a spring is arranged in the sliding groove, one end of the spring is fixed on the inner wall of the sliding groove, the other end of the spring is fixed on the sliding block, and the spring keeps the bolt to be separated from the jack; the step A is to add the mixture into excessive concentrated sulfuric acid in a container, control the temperature at 4 ℃ through ice bath, add 100 meshes of graphene, and add NaNO with the mass of one half of that of the graphene3Then, slowly adding potassium permanganate with the mass being three times that of the graphene, stirring for 90 minutes under the ice bath condition, then changing the ice bath into the water bath, controlling the temperature at 35 ℃, reacting for 30 minutes, then adding deionized water with the volume being twice of that of concentrated sulfuric acid, heating to 80 ℃, then slowly adding hydrogen peroxide with the concentration of 5%, washing in a centrifuge after the reaction liquid is golden, and drying at 50 ℃ until no white precipitate is generated in BaCl2, thus obtaining the graphene oxide. As a further improvement of the invention: the modification auxiliary agent is a mixture of 2-acrylic acid-2-carboxyethyl ester, O- (tert-butyldimethylsilane) hydroxylamine, a mixture of 4-amino-1- (3- ((hydroxymethyl) dimethylsilyl) propyl) pyrimidine-2 (1H) -ketone and (phenylaminomethyl) methyldimethoxysilane in a mass ratio of 5:2:3: 2.
As a further improvement of the invention: the blending agent is 2- (dimethylamino) vinyl-3-pyridylketone and dimethylamino diethyl ether in a mass ratio of 1: 1.
As a further improvement of the invention: the preparation method of the antibacterial high polymer material comprises the following steps: mixing polypropylene, a modification auxiliary agent and an antibacterial agent to obtain a first mixture, then mixing a blending agent and modified graphene to obtain a second mixture, then uniformly mixing the first mixture and the second mixture, and adding the mixture into a double-screw extruder to extrude to obtain plastic particles; the cylinder temperature was 190 ℃ in the first zone, 200 ℃ in the second zone, 210 ℃ in the third zone, 220 ℃ in the third zone, 230 ℃ in the fourth zone and 240 ℃ in the fifth zone.
In summary, as the gist of the present invention, the antibacterial agent and the modified graphene are added to the polypropylene material to enhance the antibacterial property and the wear resistance of the whole material. Under normal conditions, only the antibacterial agent and the wear-resisting agent are simply added, the materials of the antibacterial agent and the wear-resisting agent can generate certain adverse effect, and the effect can not be exerted to the best, but the scheme of the invention mainly solves the problem that the invention mainly adds a blending agent and a modification auxiliary agent, the blending agent is preferably a mixture of 2- (dimethylamino) vinyl-3-pyridylketone and dimethylamino diethyl ether, the modification auxiliary agent is preferably a mixture of 2-acrylic acid-2-carboxyethyl ester, O- (tert-butyldimethylsilane) hydroxylamine, 4-amino-1- (3- ((hydroxymethyl) dimethylsilyl) propyl) pyrimidine-2 (1H) -ketone and (phenylaminomethyl) methyldimethoxysilane, under the action of the blending agent, the antibacterial agent and the modified graphene can not generate adverse effect, meanwhile, the molecular structure of the polypropylene can be changed by adding the modification auxiliary agent, so that the dispersing capacity between the antibacterial agent and the modified graphene is improved. Meanwhile, dimethyl [3- (2,3,4,5, 6-pentafluorophenyl) propyl ] chlorosilane, N-methyl-N- (trimethylsilyl) trifluoroacetamide and vinyl tris (methyl ethyl ketoxime) silane added in the modification process of the modified graphene can also change the surface group of the graphene, and the modified polypropylene has better dispersion performance. Meanwhile, the use effect of the modified silicon dioxide and the graphene can be further improved through the interaction of the surface groups of the silicon dioxide and the graphene.
Drawings
FIG. 1 is a schematic view of the overall structure of the patent;
FIG. 2 is a schematic view of the state structure of the present patent;
fig. 3 is a partial enlarged view of the patent at a.
Reference numerals:
1. a plastic connector; 2. puncturing needle; 4. a master disk; 5. mounting grooves; 6. an extension pipe; 7. mounting blocks; 9. a branch pipe; 10. perforating; 11. positioning holes; 13. positioning blocks; 14. a jack; 15. a bolt; 16. a hinged lever; 17. an arc-shaped block; 18. an arc-shaped surface; 19. buckling grooves; 20. buckling; 21. mounting a plate; 22. a sliding block; 23. a sliding groove; 24. a spring.
Detailed Description
The invention will be further described in detail with reference to the following examples, which are given in the accompanying drawings.
The structure embodiment is as follows:
the trockard comprises a plastic connecting piece 1 and a puncture needle 2, wherein the plastic connecting piece 1 comprises a main disc 4, the main disc 4 is provided with an installation groove 5, the bottom of the main disc 4 is provided with an extension pipe 6 communicated with the installation groove 5, the puncture needle 2 is provided with an installation block 7, the installation block 7 is embedded into the installation groove 5, the puncture needle 2 penetrates out of the extension tube 6, a branch pipe 9 is arranged on the extension pipe 6, a perforation 10 used for communicating with the branch pipe 9 is arranged on the puncture needle 2, the mounting groove 5 is provided with two positioning holes 11 towards the direction of the extension pipe 6, the mounting block 7 is provided with a positioning block 13 for penetrating through the positioning holes 11, the positioning block 13 is provided with an insertion hole 14 at a position penetrating through the positioning hole 11, the main disc 4 is provided with a bolt 15 for inserting the insertion hole 14, the main plate 4 is also provided with a pushing mechanism for pushing the plug pin 15 to be inserted into the jack 14.
Through the technical scheme: in the using process, the puncture needle 2 is inserted into the extension pipe 6 on the main disc 4 and extends out of the extension pipe 6, in the embodiment, two installation grooves 5 are arranged, two positioning holes 11 are symmetrically arranged on the installation grooves 5, when injection is needed, the through hole 10 on the puncture needle 2 is aligned to the direction of the branch pipe 9, the installation block 7 is installed in the installation groove 5, two positioning blocks 13 are respectively inserted into the positioning holes 11, when the positioning block 13 penetrates out of the positioning holes 11, the jack 14 is also exposed from the positioning holes 11, and then the plug 15 is pushed into the jack 14 through the pushing mechanism, so that the fixing structure can be realized. When the injection function is not needed, the puncture needle 2 can be rotated so that the positions of the two positioning blocks 13 can be switched, and thus the side without the through hole 10 can block the column branch pipe 9, and the installation is carried out in the same way as described above. This enables the activation and closing of the branch pipe 9 for use under different conditions of use. Meanwhile, the positioning hole 11 and the positioning block 13 are matched, so that a better positioning effect can be achieved in the installation process, and dislocation is not easy to occur.
As a modified specific embodiment, the pushing mechanism comprises a hinge rod 16 hinged on the main disc 4, an arc-shaped block 17 is arranged on the hinge rod 16, and the arc-shaped block 17 pushes the inserted rod to move towards the insertion hole 14 after the hinge rod 16 rotates.
Through the technical scheme: through the arrangement of the hinge rod 16, when the bolt 15 needs to be pushed, the hinge rod 16 is directly rotated, the arc-shaped blocks 17 of the hinge rod 16 push the bolt 15 to move, and the arc-shaped blocks 17 act as a cam in a cam structure.
In a modified embodiment, the arc block 17 is a cylinder with a quarter circle cross section, the radius of the cross section circle is the same as the thickness of the hinge rod 16, and the arc block 17 comprises an arc surface 18, and the arc surface 18 is arranged opposite to the main disc 4.
Through the technical scheme: through making the cylinder of quarter circle with arc piece 17, can be so that 16 rotate certain angles at articulated arm after, can not influence bolt 15, only continue to rotate, just can make arc piece 17 promote the motion of bolt 15 to guarantee wholly at the in-process of adjusting perforation 10 positions, have had a clearance position to adjust.
As a modified embodiment, the side of the hinge rod 16 opposite to the arc-shaped block 17 extends towards the extension pipe 6, and the positioning block 13 is pushed to move out of the positioning hole 11 when the hinge rod 16 moves towards the positioning hole 11. Through the technical scheme: through the extension of articulated rod 16, can promote the motion of locating piece 13 through articulated rod 16, like this in the dismantlement in-process, just need not the staff to promote, also avoid the direct operation to equipment of staff as far as possible, can go the operation through articulated rod 16 direct motion.
In a modified embodiment, the main plate 4 is provided with a catching groove 19, and the hinge rod 16 is provided with a catch 20 for catching the catching groove 19.
Through the technical scheme: through the cooperation of catching groove 19 and buckle 20, can be in the fixed in-process, buckle 20 inlays into catching groove 19, plays a fixed effect once more and is in for holistic structure is more stable.
As a modified specific embodiment, the bottom of the main plate 4 is provided with a mounting plate 21, and the hinge rod 16 is hinged on the mounting plate 21.
Through the technical scheme: the installation of the installation plate 21 plays a role in hinging the hinging rod 16, and the hinging mode is simple and easy to operate.
As a further improvement of the invention, the bottom of the main plate 4 is provided with a sliding groove 23, the bolt 15 is provided with a sliding block 22, the sliding block 22 is connected in the sliding groove 23 in a sliding manner, a spring 24 is arranged in the sliding groove 23, one end of the spring 24 is fixed on the inner wall of the sliding groove 23, the other end of the spring 24 is fixed on the sliding block 22, and the spring 24 keeps the bolt 15 separated from the jack 14.
Through the technical scheme: the both ends of spring 24 are fixed respectively in sliding block 22 and 23 inner walls of sliding groove, keep bolt 15 to break away from jack 14, promote to promote sliding block 22 and fixed the back through buckle 20 and catching groove 19 at articulated rod 16, can guarantee that bolt 15 inserts in jack 14, remove arc piece 17 and bolt 15 and support the back, under the effect of the restoring force of spring 24, bolt 15 returns original position, has just so realized the function of an automatic re-setting.
Material example one:
the antibacterial high polymer material comprises the following components in parts by weight:
polypropylene: 100 portions of
Antibacterial agents: 0.5 portion
Modified graphene: 5 portions of
Blending agent: 3 portions of
And (3) modifying auxiliary agent: 5 parts of the raw materials.
The antimicrobial agent is zeolite silver.
The modified graphene comprises the following components in parts by mass:
graphene: 100 portions of
1, 3-difluoro-5- [2- (trimethylsilyl) ethynyl ] benzene: 5 portions of
N-methyl-N- (trimethylsilyl) trifluoroacetamide: 1 part of
(oxymethyl acrylate) methyldiethoxysilane: and 2 parts.
The preparation method of the modified graphene comprises the following steps:
step A: oxidizing graphene to prepare graphene oxide;
and B: dispersing 1, 3-difluoro-5- [2- (trimethylsilyl) ethynyl ] benzene, N-methyl-N- (trimethylsilyl) trifluoroacetamide, (acryloxymethyl) methyldiethoxysilane in an acetone solution;
and C: and (3) adding graphene oxide into the acetone solution obtained in the step two, uniformly mixing, and reacting at 60 ℃ for 12 hours to obtain the modified graphene.
The step A is to add the mixture into excessive concentrated sulfuric acid in a container, control the temperature at 4 ℃ through ice bath, add 100 meshes of graphene, and add NaNO with the mass of one half of that of the graphene3Then, slowly adding potassium permanganate with the mass being three times that of the graphene, stirring for 90 minutes under the ice bath condition, then changing the ice bath into the water bath, controlling the temperature at 35 ℃, reacting for 30 minutes, then adding deionized water with the volume being twice of that of concentrated sulfuric acid, heating to 80 ℃, then slowly adding hydrogen peroxide with the concentration of 5%, washing in a centrifuge after the reaction liquid is golden, and drying at 50 ℃ until no white precipitate is generated in BaCl2, thus obtaining the graphene oxide. The modification auxiliary agent is a mixture of 2-acrylic acid-2-carboxyethyl ester, O- (tert-butyldimethylsilane) hydroxylamine, a mixture of 4-amino-1- (3- ((hydroxymethyl) dimethylsilyl) propyl) pyrimidine-2 (1H) -ketone and (phenylaminomethyl) methyldimethoxysilane in a mass ratio of 5:2:3: 2.
The blending agent is 2- (dimethylamino) vinyl-3-pyridylketone and dimethylamino diethyl ether in a mass ratio of 1: 1.
The preparation method of the antibacterial high polymer material comprises the following steps: mixing polypropylene, a modification auxiliary agent and an antibacterial agent to obtain a first mixture, then mixing a blending agent and modified graphene to obtain a second mixture, then uniformly mixing the first mixture and the second mixture, and adding the mixture into a double-screw extruder to extrude to obtain plastic particles; the cylinder temperature was 190 ℃ in the first zone, 200 ℃ in the second zone, 210 ℃ in the third zone, 220 ℃ in the third zone, 230 ℃ in the fourth zone and 240 ℃ in the fifth zone.
Comparative materials example one:
the antibacterial high polymer material comprises the following components in parts by weight:
polypropylene: 100 portions of
Blending agent: 3 portions of
And (3) modifying auxiliary agent: 5 parts of the raw materials.
The preparation method of the antibacterial high polymer material comprises the following steps: mixing polypropylene and a modification auxiliary agent to obtain a first mixture, uniformly mixing the first mixture and a blending agent, and adding the mixture into a double-screw extruder for extrusion to obtain plastic particles; the cylinder temperature was 190 ℃ in the first zone, 200 ℃ in the second zone, 210 ℃ in the third zone, 220 ℃ in the third zone, 230 ℃ in the fourth zone and 240 ℃ in the fifth zone.
Comparative materials example two:
the antibacterial high polymer material comprises the following components in parts by weight:
polypropylene: 100 portions of
Antibacterial agents: 0.5 portion
Modified graphene: 5 portions of
The antimicrobial agent is zeolite silver.
The modified graphene comprises the following components in parts by mass:
graphene: 100 portions of
1, 3-difluoro-5- [2- (trimethylsilyl) ethynyl ] benzene: 5 portions of
N-methyl-N- (trimethylsilyl) trifluoroacetamide: 1 part of
(oxymethyl acrylate) methyldiethoxysilane: and 2 parts.
The preparation method of the modified graphene comprises the following steps:
step A: oxidizing graphene to prepare graphene oxide;
and B: dispersing 1, 3-difluoro-5- [2- (trimethylsilyl) ethynyl ] benzene, N-methyl-N- (trimethylsilyl) trifluoroacetamide, (acryloxymethyl) methyldiethoxysilane in an acetone solution;
and C: and (3) adding graphene oxide into the acetone solution obtained in the step two, uniformly mixing, and reacting at 60 ℃ for 12 hours to obtain the modified graphene.
The step A is to add the mixture into excessive concentrated sulfuric acid in a container, control the temperature at 4 ℃ through ice bath, add 100 meshes of graphene, and add NaNO with the mass of one half of that of the graphene3Slowly adding potassium permanganate with the mass being three times that of the graphene, stirring for 90 minutes under the ice bath condition, changing the ice bath into the water bath, controlling the temperature to be 35 ℃, reacting for 30 minutes, adding deionized water with the volume being twice that of concentrated sulfuric acid, heating to 80 ℃, slowly adding hydrogen peroxide with the concentration of 5%, washing in a centrifugal machine after reaction liquid is golden, and washing until BaCl2 generates no white precipitateAnd drying at 50 ℃ to obtain the graphene oxide. The modification auxiliary agent is a mixture of 2-acrylic acid-2-carboxyethyl ester, O- (tert-butyldimethylsilane) hydroxylamine, a mixture of 4-amino-1- (3- ((hydroxymethyl) dimethylsilyl) propyl) pyrimidine-2 (1H) -ketone and (phenylaminomethyl) methyldimethoxysilane in a mass ratio of 5:2:3: 2.
The blending agent is 2- (dimethylamino) vinyl-3-pyridylketone and dimethylamino diethyl ether in a mass ratio of 1: 1.
The preparation method of the antibacterial high polymer material comprises the following steps: mixing polypropylene and an antibacterial agent to obtain a first mixture, uniformly mixing the first mixture and the modified graphene, and adding the mixture into a double-screw extruder for extrusion to obtain plastic particles; the cylinder temperature was 190 ℃ in the first zone, 200 ℃ in the second zone, 210 ℃ in the third zone, 220 ℃ in the third zone, 230 ℃ in the fourth zone and 240 ℃ in the fifth zone.
Comparative example materials no:
the antibacterial high polymer material comprises the following components in parts by weight:
polypropylene: 100 portions of
Zeolite: 0.5 portion
Graphene: 5 portions of
Blending agent: 3 portions of
And (3) modifying auxiliary agent: 5 parts of the raw materials.
The preparation method of the antibacterial high polymer material comprises the following steps: mixing polypropylene, a modification auxiliary agent and zeolite to obtain a first mixture, then mixing a blending agent and graphene to obtain a second mixture, then uniformly mixing the first mixture and the second mixture, and adding the mixture into a double-screw extruder to extrude to obtain plastic particles; the cylinder temperature was 190 ℃ in the first zone, 200 ℃ in the second zone, 210 ℃ in the third zone, 220 ℃ in the third zone, 230 ℃ in the fourth zone and 240 ℃ in the fifth zone.
Tests, the above examples and comparative examples were subjected to antibacterial and abrasion resistance tests.
And (3) antibacterial property test: accurately weighing 0.1g of sample, adding into a triangular flask filled with 99mL of sterile water, and separating for 20min by using ultrasonic waves. 1mL of bacterial suspension at a concentration of 107CFU/mL was added. Another flask containing 99mL of sterile water was used as a blank and only 1mL of the bacterial suspension was added. Placing the triangular flask in a shaking incubator, and performing shaking culture at 37 deg.C and 200r/min for 30 min. 0.2mL of the mixed solution is taken from each triangular flask, diluted properly, coated on a culture dish, and cultured at the constant temperature of 35 ℃ for 48-72 h, and then colony counting is carried out. The two groups of samples are subjected to 3 parallel experiments respectively, and the antibacterial rate is calculated according to the following formula that R ═ A-B/A ]. multidot.100%
R is the antibacterial rate of the bacteria,
a-average colony number of blank control group;
b-average colony number of the added antibacterial sample to be tested.
Staphylococcus aureus and Escherichia coli were selected for selection of the strain.
And (3) wear resistance test: the wear resistance is about good when the value is smaller according to the test of GB/T168-1998 standard.
| Staphylococcus aureus (%) | Escherichia coli (%) | Abrasion resistance (%) | |
| Example one | 95 | 95 | 0.1 |
| Comparative example 1 | 51 | 50 | 4.8 |
| Comparative exampleII | 80 | 81 | 2.5 |
| Comparative example No. three | 55 | 53 | 1.8 |
In summary, as the gist of the invention, the antibacterial agent and the modified graphene are added into the polypropylene material to enhance the antibacterial property and the wear resistance of the whole material. Under normal conditions, only the antibacterial agent and the wear-resisting agent are simply added, the materials of the antibacterial agent and the wear-resisting agent can generate certain adverse effect, and the effect can not be exerted to the best, but the scheme of the invention mainly solves the problem that the invention mainly adds a blending agent and a modification auxiliary agent, the blending agent is preferably a mixture of 2- (dimethylamino) vinyl-3-pyridylketone and dimethylamino diethyl ether, the modification auxiliary agent is preferably a mixture of 2-acrylic acid-2-carboxyethyl ester, O- (tert-butyldimethylsilane) hydroxylamine, 4-amino-1- (3- ((hydroxymethyl) dimethylsilyl) propyl) pyrimidine-2 (1H) -ketone and (phenylaminomethyl) methyldimethoxysilane, under the action of the blending agent, the antibacterial agent and the modified graphene can not generate adverse effect, meanwhile, the molecular structure of the polypropylene can be changed by adding the modification auxiliary agent, so that the dispersing capacity between the antibacterial agent and the modified graphene is improved. Meanwhile, dimethyl [3- (2,3,4,5, 6-pentafluorophenyl) propyl ] chlorosilane, N-methyl-N- (trimethylsilyl) trifluoroacetamide and vinyl tris (methyl ethyl ketoxime) silane added in the modification process of the modified graphene can also change the surface group of the graphene, and the modified polypropylene has better dispersion performance. Meanwhile, the use effect of the modified silicon dioxide and the graphene can be further improved through the interaction of the surface groups of the silicon dioxide and the graphene.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (7)
1. An antibacterial troxaca is characterized in that: comprises a puncture needle (2) and a plastic connecting piece (1), wherein the plastic connecting piece (1) comprises a main disc (4), a mounting groove (5) is arranged on the main disc (4), an extension pipe (6) communicated with the mounting groove (5) is arranged at the bottom of the main disc (4), a mounting block (7) is arranged on the puncture needle (2), the mounting block (7) is embedded into the mounting groove (5), the puncture needle (2) penetrates out of the extension pipe (6), a branch pipe (9) is arranged on the extension pipe (6), a through hole (10) communicated with the branch pipe (9) is arranged on the puncture needle (2), two positioning holes (11) are arranged in the direction of the mounting groove (5) towards the extension pipe (6), a positioning block (13) used for penetrating out of the positioning holes (11) is arranged on the mounting block (7), and a jack (14) is arranged on the position of the positioning block (13) penetrating out of the positioning holes (11, the main disc (4) is provided with a plug pin (15) for being inserted into the jack (14), and the main disc (4) is also provided with a pushing mechanism for pushing the plug pin (15) to be inserted into the jack (14); the plastic connecting piece is made of antibacterial high polymer materials:
the antibacterial high polymer material comprises the following components in parts by weight:
polypropylene: 100 portions of
Antibacterial agents: 0.5 portion
Modified graphene: 5 portions of
Blending agent: 3 portions of
And (3) modifying auxiliary agent: 5 parts of a mixture;
the pushing mechanism comprises a hinge rod (16) hinged to the main disc (4), an arc-shaped block (17) is arranged on the hinge rod (16), and the arc-shaped block (17) pushes the inserted rod to move towards the insertion hole (14) after the hinge rod (16) rotates; one side of the hinged rod (16), which is back to the arc-shaped block (17), extends towards the extension pipe (6), and when the hinged rod (16) moves towards the positioning hole (11), the positioning block (13) is pushed to move out of the positioning hole (11); the antibacterial agent is zeolite silver.
2. An antibacterial troxacat according to claim 1, characterized in that: a buckle groove (19) is formed in the main disc (4), and a buckle (20) buckled into the buckle groove (19) is arranged on the hinge rod (16);
the modified graphene comprises the following components in parts by mass:
graphene: 100 portions of
1, 3-difluoro-5- [2- (trimethylsilyl) ethynyl ] benzene: 5 portions of
N-methyl-N- (trimethylsilyl) trifluoroacetamide: 1 part of
(oxymethyl acrylate) methyldiethoxysilane: and 2 parts.
3. An antibacterial troxacat according to claim 1, characterized in that: the bottom of the main disc (4) is provided with an installation plate (21), and the hinge rod (16) is hinged on the installation plate (21);
the preparation method of the modified graphene comprises the following steps:
step A: oxidizing graphene to prepare graphene oxide;
and B: dispersing 1, 3-difluoro-5- [2- (trimethylsilyl) ethynyl ] benzene, N-methyl-N- (trimethylsilyl) trifluoroacetamide, (acryloxymethyl) methyldiethoxysilane in an acetone solution;
and C: and (3) adding graphene oxide into the acetone solution obtained in the step two, uniformly mixing, and reacting at 60 ℃ for 12 hours to obtain the modified graphene.
4. An antibacterial troxacat according to claim 3, characterized in that: a sliding groove (23) is formed in the bottom of the main disc (4), a sliding block (22) is arranged on the plug pin (15), the sliding block (22) is connected in the sliding groove (23) in a sliding mode, a spring (24) is arranged in the sliding groove (23), one end of the spring (24) is fixed to the inner wall of the sliding groove (23), the other end of the spring (24) is fixed to the sliding block (22), and the spring (24) keeps the plug pin (15) separated from the jack (14);
the step A is to add the mixture into excessive concentrated sulfuric acid in a container, control the temperature at 4 ℃ through ice bath, add 100 meshes of graphene, and add NaNO with the mass of one half of that of the graphene3Slowly adding potassium permanganate with the mass being three times that of the graphene, stirring for 90 minutes under the ice bath condition, changing the ice bath into the water bath, controlling the temperature to be 35 ℃, reacting for 30 minutes, adding deionized water with the volume being twice that of concentrated sulfuric acid, heating to 80 ℃, slowly adding hydrogen peroxide with the concentration of 5%, washing in a centrifuge until the reaction liquid is golden, and then washing until BaCl2And drying at 50 ℃ to obtain the graphene oxide after no white precipitate is generated.
5. An antibacterial troxacat according to claim 1, characterized in that: the modified auxiliary agent is a mixture of 2-acrylic acid-2-carboxyethyl ester, O- (tert-butyldimethylsilane) hydroxylamine, 4-amino-1- (3- ((hydroxymethyl) dimethylsilyl) propyl) pyrimidine-2 (1H) -ketone and (phenylaminomethyl) methyldimethoxysilane in a mass ratio of 5:2:3: 2.
6. An antibacterial troxacat according to claim 1, characterized in that: the blender is 2- (dimethylamino) vinyl-3-pyridyl ketone and dimethylamino diethyl ether with the mass ratio of 1: 1.
7. An antibacterial troxacat according to claim 1, characterized in that: the preparation method of the antibacterial high polymer material comprises the following steps: mixing polypropylene, a modification auxiliary agent and an antibacterial agent to obtain a first mixture, then mixing a blending agent and modified graphene to obtain a second mixture, then uniformly mixing the first mixture and the second mixture, and adding the mixture into a double-screw extruder to extrude to obtain plastic particles; the cylinder temperature was 190 ℃ in the first zone, 200 ℃ in the second zone, 210 ℃ in the third zone, 220 ℃ in the third zone, 230 ℃ in the fourth zone and 240 ℃ in the fifth zone.
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