CN113278394B - Medical catheter bonding glue and preparation method thereof - Google Patents
Medical catheter bonding glue and preparation method thereof Download PDFInfo
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- CN113278394B CN113278394B CN202110425594.0A CN202110425594A CN113278394B CN 113278394 B CN113278394 B CN 113278394B CN 202110425594 A CN202110425594 A CN 202110425594A CN 113278394 B CN113278394 B CN 113278394B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J157/00—Adhesives based on unspecified polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09J157/02—Copolymers of mineral oil hydrocarbons
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J193/00—Adhesives based on natural resins; Adhesives based on derivatives thereof
- C09J193/04—Rosin
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/02—Applications for biomedical use
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/04—Thermoplastic elastomer
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- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials For Medical Uses (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses medical catheter bonding glue and a preparation method thereof, belonging to the technical field of medical instrument glue production, wherein the glue comprises 1.03-2.86% of SEBS, 3.14-10% of tackifying resin and the balance of solvent in percentage by mass; wherein the tackifying resin comprises C5 petroleum resin and hydrogenated rosin glyceride, and the solvent comprises cyclohexane, ethyl acetate and cyclohexanone. The proper tackifying resin types are selected from the glue, so that the bonding strength of the glue is improved; cyclohexanone is added into the solvent, so that the lubricity of the medical catheter is improved; and the solvent with slower volatilization is selected, so that the pot life of the glue is greatly prolonged; meanwhile, the selected solvent in the glue has small side effect on human body and small harm to the body of workers.
Description
Technical Field
The invention belongs to the technical field of medical instrument glue production, and particularly relates to medical catheter bonding glue and a preparation method thereof.
Background
The medical catheter is a tubular product made of medical materials such as PVC (polyvinyl chloride), nylon, polyurethane, silicon rubber and the like and having medical application, and the medical catheter can be inserted into a human body or used for diagnosis or treatment of diseases in vitro in the application process. Common medical catheters comprise an infusion catheter, a respiratory tract catheter, a digestive tract catheter, a cardiovascular catheter, a urinary catheter, a venous retention needle catheter, a neurovascular catheter, a surgical drainage catheter and the like, belong to medical consumable products, and have huge dosage in practical application.
During the production process of the medical catheter, glue is needed for bonding, but as a mainstream bonding glue sold in the market at present, SEBS (hydrogenated styrene-butadiene block copolymer) solvent glue is generally used for bonding the medical catheter, and the following problems are generally caused: firstly, the bonding strength is not high enough and is easy to damage; secondly, the bonding part is whitened after being stressed, and the service performance of the product is influenced; thirdly, the pipe is not lubricated enough after being bonded, and is difficult to push after being pushed into the length of the accessory part; fourthly, the glue solvent is volatilized too fast, and the drying speed is high, so the working life is short, and the system is easy to become thick, thereby the glue is scrapped.
Therefore, in order to solve the above problems, it is necessary to develop a new medical catheter bonding glue, which has the characteristics of high bonding strength, slow volatilization, good lubricity and the like, so as to ensure the usability of the medical catheter bonding glue.
Disclosure of Invention
The invention aims to provide medical catheter bonding glue and a preparation method thereof, and aims to solve the technical problems in the background art.
In order to achieve the purpose, the invention discloses medical catheter bonding glue which comprises the following raw materials in percentage by mass:
SEBS 1.03-2.86％
tackifying resin 3.14-10%
The balance of solvent;
wherein the mass ratio of the SEBS to the tackifying resin is 1: 3-5.
Further, the mass ratio of the SEBS to the tackifying resin is 1: 3.5.
Further, the tackifying resins include C5 petroleum resin and hydrogenated rosin glycerol ester.
Furthermore, the dosage ratio of the C5 petroleum resin to the hydrogenated rosin glyceride in the tackifying resin is 1: 0.8-1.2.
Further, the dosage ratio of the C5 petroleum resin to the hydrogenated rosin glyceride in the tackifying resin is 1:1.
Further, the solvent comprises one or more of cyclohexane, ethyl acetate and cyclohexanone.
Further, the volume ratio of cyclohexane, ethyl acetate and cyclohexanone in the solvent is 15:1: 6.
The invention also claims a preparation method of the medical catheter bonding glue, which comprises the following steps:
(1) sequentially adding SEBS and tackifying resin into a reaction container, and uniformly stirring to obtain a mixture;
(2) and (2) adding a solvent into the reactor in the step (1), and dissolving the mixture to obtain the catalyst.
In the step (2), after the solvent is added, the reaction vessel is heated to 55-65 ℃, and stirring is continued to dissolve the SEBS and the tackifying resin.
Meanwhile, in the step (2), after the solvent is added, the reaction vessel is placed at room temperature and stands until the SEBS and the tackifying resin are dissolved. Specifically, the standing time is 96 hours or more.
In the invention, the SEBS rubber is a thermoplastic elastomer, and the molecular structure of the SEBS rubber comprises two blocks of hydrogenated styrene and butadiene, wherein the hydrogenated styrene block is a hydrogenated styrene plastic phase with larger polarity, and the butadiene is a non-polar rubber phase; among tackifying resins, C5 petroleum resin has a high solubility parameter, and hydrogenated rosin glycerol ester has a low solubility parameter.
The C5 petroleum resin with higher solubility parameter has better compatibility with hydrogenated styrene plastics with larger polarity; the hydrogenated rosin glyceride with lower solubility parameter has better compatibility with non-polar butadiene rubber.
Meanwhile, C5 petroleum resin and hydrogenated rosin glyceride are selected as tackifying resins in the invention, because the hydrogenated rosin glyceride is a product obtained by hydrogenation modification of rosin glyceride, and because molecular chains do not contain double bonds, the aging resistance is greatly improved; the C5 petroleum resin is generally not used alone, but is used as an accelerator, a regulator, a modifier and other resins together, and is soluble in a solvent. The pressure-sensitive, fast-tack and low-temperature properties of glycerol esters of hydrogenated rosins are not replaced by petroleum resins. Therefore, the medical catheter bonding glue is prepared by compounding the two components, and the excellent performance of the tackifying resin can be fully exerted.
The blending of the C5 petroleum resin with higher solubility parameter and the SEBS enhances the elastic modulus and cohesive strength of the hydrogenated styrene plastic phase, but reduces the initial adhesion and peel strength of the glue; therefore, hydrogenated rosin glyceride with low solubility is introduced, the compatibility of the hydrogenated rosin glyceride with a nonpolar butadiene rubber phase in SEBS is increased, and the reduction of the initial adhesion and the peeling strength of the glue can be compensated. Therefore, the glue obtained by the formula of the invention has high bonding strength and initial adhesion, high elastic modulus and cohesive strength, and excellent comprehensive performance.
When the glue is used, the SEBS rubber and the tackifying resin are solid content components and are dissolved in ketone and ester solvents, the SEBS rubber is used as a base material to form an SEBS glue film, and the tackifying resin is attached to the SEBS glue film, wherein the C5 petroleum resin with a high solubility parameter is compatible with hydrogenated styrene plastic with a high polarity, and the hydrogenated rosin glyceride with a low solubility parameter is compatible with non-polar butadiene rubber, so that a uniform continuous phase is formed between the SEBS rubber and the tackifying resin, and the components in the glue are more uniform.
The bonding principle of the glue is as follows: after the medical catheter and the fittings are adhered, the solvent is volatilized, the SEBS and the tackifying resin are remained between the gaps between the catheter and the fittings, and the tackifying resin is used as the tackifier to form an adhesive system of the fittings, the tackifier, the SEBS and the tackifier, and the catheter, so that the adhesive strength is high.
Compared with the existing products, the medical catheter bonding glue and the preparation method thereof have the following advantages:
(1) the proper tackifying resin types are selected, and the optimal addition amount is determined, so that the bonding strength of the bonding glue is greatly increased, and the problem that the bonding part is white under stress is solved;
(2) cyclohexanone with proper amount is added into the solvent, so that the lubricating property of the medical catheter bonded by the glue is greatly improved when the medical catheter is assembled and used;
(3) the solvents in the medical adhesive glue are all solvents with slow volatilization, so the working life of the glue is greatly prolonged, the glue can be kept in a diluted state for a long time in the using process, and the medical adhesive glue is not easy to scrap;
(4) the solvent of the glue is selected reasonably, so that the preparation process of the glue can be dissolved under the condition of heating and stirring, and can also be dissolved at normal temperature, and the convenience of workshop production is improved.
(5) The invention selects the SEBS rubber and the tackifying resin with medical grade and the analytically pure solvent with low volatilization speed and small side effect on human body, effectively improves the service performance of the glue and has little harm to the body of operators.
Detailed Description
The technical solution of the present invention will be described in detail by the following specific examples.
Example 1
The medical catheter bonding glue is prepared by preparing raw materials according to the raw material proportion given in table 1 and then preparing the glue according to the following steps:
(1) preparing raw materials;
(2) sequentially adding SEBS, C5 petroleum resin in tackifying resin and hydrogenated rosin glyceride into a stirring kettle, and uniformly mixing;
(3) cyclohexane (density 0.78 g/cm) in solvent was added in sequence 3 ) Ethyl acetate (density 0.902 g/cm) 3 ) And Cyclohexanone (density 0.95 g/cm) 3 ) Adding the mixture into the uniformly mixed material obtained in the step (2), heating the temperature of the stirring kettle to 60 ℃, and stirring for 30min until the SEBS and the tackifying resin are completely dissolved;
(4) and (4) cooling the mixed solution obtained in the step (3) to room temperature, and then pouring the cooled mixed solution into a storage bucket for sealed storage.
In example 1, the mass percentage of the SEBS in the glue raw material is 1.04%, and the mass percentage of the tackifying resin is 3.65%. The mass ratio of the SEBS to the tackifying resin is 1:3.5, the mass ratio of the C5 petroleum resin to the hydrogenated rosin glyceride in the tackifying resin is 1:1, and the volume ratio of cyclohexane, ethyl acetate and cyclohexanone in the solvent is 15:1: 16.
The medical catheter bonding glue obtained in this example 1 is denoted as S1.
The pot life of S1 was tested according to the national standard GB/T7123.1-2002 (determination of the pot life of adhesives), and the test result showed that the pot life of S1 was 6 h.
Example 2
Preparing raw materials according to the raw material proportion given in table 1, and preparing the glue according to the following steps:
(1) preparing raw materials;
(2) and sequentially adding all the raw materials into a plastic barrel, sealing, standing at room temperature for 96h, and completely dissolving the raw materials to obtain the glue.
In example 2, the mass percentage of the SEBS in the glue raw material is 1.04%, and the mass percentage of the tackifying resin is 3.65%. The mass ratio of the SEBS to the tackifying resin is 1:3.5, the mass ratio of the C5 petroleum resin to the hydrogenated rosin glyceride in the tackifying resin is 1:1, and the volume ratio of cyclohexane, ethyl acetate and cyclohexanone in the solvent is 15:1: 16.
The medical catheter bonding glue obtained in this example 2 is denoted as S2.
The pot life of S2 was tested according to the national standard GB/T7123.1-2002 (determination of the pot life of adhesives), and the test result showed that the pot life of S2 was 6 h.
Example 3
The glue preparation was carried out by preparing the raw materials according to the raw material ratios given in table 1 and referring to the preparation methods given in table 1.
In example 3, the glue raw material includes, by mass, 1.05% of SEBS and 3.15% of tackifying resin. The mass ratio of the SEBS to the tackifying resin is 1:3, the mass ratio of the C5 petroleum resin to the hydrogenated rosin glyceride in the tackifying resin is 1:0.8, and the volume ratio of cyclohexane, ethyl acetate and cyclohexanone in the solvent is 15:1: 16.
The medical catheter bonding glue obtained in this example 3 is denoted as S3.
The pot life of S3 was tested according to the national standard GB/T7123.1-2002 (determination of the pot life of adhesives), and the test result showed that the pot life of S3 was 6 h.
Example 4
The glue preparation was carried out by preparing the raw materials according to the raw material ratios given in table 1 and referring to the preparation methods given in table 1.
In example 4, the mass percentage of the SEBS in the glue raw material is 1.03%, and the mass percentage of the tackifying resin is 5.15%. The mass ratio of the SEBS to the tackifying resin is 1:5, the mass ratio of the C5 petroleum resin to the hydrogenated rosin glyceride in the tackifying resin is 1:1.2, and the volume ratio of cyclohexane, ethyl acetate and cyclohexanone in the solvent is 15:1: 16.
The medical catheter bonding glue obtained in this example 4 is denoted as S4.
The pot life of S4 was tested according to the national standard GB/T7123.1-2002 (determination of the pot life of adhesives), and the test result showed that the pot life of S4 was 6 h.
Example 5
The glue preparation was carried out by preparing the raw materials according to the raw material ratios given in table 1 and referring to the preparation methods given in table 1.
In example 5, the glue raw material includes, by mass, 1.99% of SEBS and 6.96% of tackifying resin. The mass ratio of the SEBS to the tackifying resin is 1:3.5, the mass ratio of the C5 petroleum resin to the hydrogenated rosin glyceride in the tackifying resin is 1:1, and the volume ratio of cyclohexane, ethyl acetate and cyclohexanone in the solvent is 15:1: 16.
The medical catheter bonding glue obtained in this example 5 is denoted as S5.
The pot life of S5 was tested according to the national standard GB/T7123.1-2002 (determination of the pot life of adhesives), and the test result showed that the pot life of S5 was 6 h.
Example 6
The glue preparation was carried out by preparing the raw materials according to the raw material ratios given in table 1 and referring to the preparation methods given in table 1.
In this example 6, in the glue raw material, the mass percentage of SEBS is 2.86%, and the mass percentage of the tackifying resin is 10%. The mass ratio of the SEBS to the tackifying resin is 1:3.5, the mass ratio of the C5 petroleum resin to the hydrogenated rosin glyceride in the tackifying resin is 1:1, and the volume ratio of cyclohexane, ethyl acetate and cyclohexanone in the solvent is 15:1: 16.
The medical catheter bonding glue obtained in this example 6 is denoted as S6.
The pot life of S6 was tested according to the national standard GB/T7123.1-2002 (determination of the pot life of adhesives), and the test result showed that the pot life of S4 was 6 h.
Comparative example 1
The glue preparation was carried out by preparing the raw materials according to the raw material ratios given in table 1 and referring to the preparation methods given in table 1.
In the comparative example 1, the mass percent of the SEBS and the mass percent of the tackifying resin in the glue raw material is 1.06%. The mass ratio of the SEBS to the tackifying resin is 1:1.5, the mass ratio of the C5 petroleum resin to the hydrogenated rosin glyceride in the tackifying resin is 1:0.5, and the volume ratio of cyclohexane, ethyl acetate and cyclohexanone in the solvent is 15:1: 16.
The medical catheter bonding glue obtained in this comparative example 1 was designated as B1.
The pot life of B1 was tested according to the national standard GB/T7123.1-2002 (determination of the pot life of adhesives), and the test result showed that the pot life of B1 was 6 h.
Comparative example 2
The glue preparation was carried out by preparing the raw materials according to the raw material ratios given in table 1 and referring to the preparation methods given in table 1.
The medical catheter bonding glue obtained in this comparative example 2 is denoted B2.
The pot life of B2 was tested according to the national standard GB/T7123.1-2002 (determination of the pot life of adhesives), and the test result showed that the pot life of B2 was 4 h.
Comparative example 3
The glue preparation was carried out by preparing the raw materials according to the raw material ratios given in table 1 and referring to the preparation methods given in table 1.
The medical catheter bonding glue obtained in this comparative example 3 is denoted B3.
The pot life of B3 was tested according to the national standard GB/T7123.1-2002 (determination of the pot life of adhesives), and the test result showed that the pot life of B2 was 3 h.
Comparative example 4
The glue preparation was carried out by preparing the raw materials according to the raw material ratios given in table 1 and referring to the preparation methods given in table 1.
The medical catheter bonding glue obtained in this comparative example 4 is denoted B4.
The pot life of B4 was tested according to the national standard GB/T7123.1-2002 (determination of the pot life of adhesives), and the test result showed that the pot life of B4 was 3 h.
TABLE 1 raw material ratios of the catheter bonding glue for traditional Chinese medicine of the examples and comparative examples
Adopting the glue obtained in the embodiment and the comparative example, simultaneously purchasing glue, adopting the same bonding method to bond the EVA medical catheter and the fittings, wherein the purchased glue is as follows: the glue is purchased from Shanghai Fantian elastomer Co., Ltd, the model is C2 glue, different loads are applied by adopting a suspended weight test method, the bonding performance of the glue is tested, if the glue cannot fall off after being stressed, the product appearance of a bonding point is observed, and the test results are shown in tables 2 and 3.
TABLE 2 bond Strength and appearance test results at 15N load
TABLE 3 bond Strength test results at 40N, 60N, 100N and 140N loads, respectively
In tables 2 and 3 above, the term "drug passing" refers to the adhesion between the drug passing device with the tube and the EVA medical catheter, "two-way" refers to the adhesion between the two-way connector and the EVA medical catheter, "temporary infusion tube puncture needle" refers to the adhesion between the temporary infusion tube puncture needle and the EVA medical catheter tube, "three-way" refers to the adhesion between the three-way connector and the EVA medical catheter tube, "nutrition bottle needle" refers to the adhesion between the nutrition bottle needle and the EVA medical catheter tube, "three-way 6.4 interface 6.4 catheter position" refers to the adhesion between the connector with the diameter of 6.4mm in the three-way connector and the EVA medical catheter tube, "three-way 8.0 interface 8.0 catheter position" refers to the adhesion between the connector with the diameter of 8.0mm in the three-way catheter tube and the EVA medical catheter tube.
As can be seen from the above tables 2 and 3, the medical catheter bonding glue obtained by adopting the glue raw material ratio and the preparation method has high bonding strength, and is not easy to pull off when bonding an EVA medical catheter and accessories; the product is not whitened after being stressed, and the use performance is not influenced; meanwhile, the glue obtained by the invention has moderate working life, and the operable time is obviously increased when in use.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the design concept of the present invention should be included in the scope of the present invention.
Claims (6)
1. The medical catheter bonding glue is characterized by comprising the following raw materials in percentage by mass:
SEBS 1.03-2.86％
3.14 to 10 percent of tackifying resin
The balance of solvent;
wherein the mass ratio of the SEBS to the tackifying resin is 1: 3-5;
the tackifying resin comprises C5 petroleum resin and hydrogenated rosin glyceride, and the dosage ratio of the C5 petroleum resin to the hydrogenated rosin glyceride in the tackifying resin is 1: 0.8-1.2;
the solvent comprises cyclohexane, ethyl acetate and cyclohexanone, and the volume ratio of the cyclohexane to the ethyl acetate to the cyclohexanone is 15:1: 6.
2. The medical catheter bonding glue of claim 1, wherein: the mass ratio of the SEBS to the tackifying resin is 1: 3.5.
3. The medical catheter bonding glue of claim 2, wherein: the dosage ratio of the C5 petroleum resin to the hydrogenated rosin glyceride in the tackifying resin is 1:1.
4. A process for the preparation of a medical catheter bonding glue according to any one of claims 1 to 3, characterized in that: the method comprises the following steps:
(1) sequentially adding SEBS and tackifying resin into a reaction container, and uniformly stirring to obtain a mixture;
(2) and (2) adding a solvent into the reactor in the step (1), and dissolving the mixture to obtain the catalyst.
5. The method of claim 4, wherein: in the step (2), after the solvent is added, the reaction vessel is heated to 55-65 ℃, and stirring is continued to dissolve the SEBS and the tackifying resin.
6. The method of claim 4, wherein: in the step (2), after the solvent is added, the reaction vessel is placed at room temperature and stands until the SEBS and the tackifying resin are dissolved.
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| CN202110425594.0A CN113278394B (en) | 2021-04-20 | 2021-04-20 | Medical catheter bonding glue and preparation method thereof |
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| CN114774037B (en) * | 2022-05-05 | 2023-06-30 | 成都市新津事丰医疗器械有限公司 | Adhesive for medical TPE material, preparation method and application |
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| CN102101998B (en) * | 2010-09-14 | 2013-03-20 | 抚顺哥俩好化学有限公司 | Heat resistance/environmental protection type high viscosity and high strength SEBS adhesive and preparation method thereof |
| CN107459955A (en) * | 2016-06-06 | 2017-12-12 | 欧瑞喜(福州)塑胶科技有限公司 | A kind of solvent type adhesive rich in thermoplastic elastomer (TPE) |
| CN110079245A (en) * | 2019-05-17 | 2019-08-02 | 深圳市凯思特医疗科技股份有限公司 | A kind of binder and its preparation method and application |
| CN111876108B (en) * | 2020-07-28 | 2022-04-08 | 深圳市新亚新材料有限公司 | Peelable glue and preparation method and application thereof |
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