CN118141609B

CN118141609B - Preparation method of composite non-woven fabric and quick emergency bandage

Info

Publication number: CN118141609B
Application number: CN202410359095.XA
Authority: CN
Inventors: 杨封雄
Original assignee: Huzhou Renyao Medical Products Development Co ltd
Current assignee: Huzhou Renyao Medical Products Development Co ltd
Priority date: 2024-03-27
Filing date: 2024-03-27
Publication date: 2024-09-20
Anticipated expiration: 2044-03-27
Also published as: CN118141609A

Abstract

The invention relates to a preparation method of composite non-woven fabric and a quick emergency bandage, and in particular belongs to the field of elastic bandage preparation. The quick emergency bandage comprises a base material of a bottom layer, an antibacterial adhesive of a middle layer and specific absorbent cotton of a surface layer; the bottom layer and the surface layer are fixed together through the bonding of the middle layer. The quick emergency bandage provided by the invention can avoid the problems of allergy, air impermeability, insufficient elasticity and overtightening when the common bandage is used for bandaging, and has better antibacterial property and the effect of promoting wound healing.

Description

Preparation method of composite non-woven fabric and quick emergency bandage

Technical Field

The invention belongs to the technical field of elastic bandage preparation, and particularly relates to a preparation method of a composite non-woven fabric and a quick emergency bandage.

Background

The self-adhesive elastic bandage is a novel bandage which combines multiple subjects of chemistry, materialology and medicine, is born by clinical demands and is continuously innovated in technological development. In the 80 s of the 20 th century, elastic bandages are widely applied to the fields of sports protection and medical treatment due to the characteristics of good continuous elasticity and comfort and difficulty in slipping. At the beginning of the 21 st century, along with the comprehensive improvement of the medical level in China, the common hemostatic bandaging technology is difficult to meet the requirement of postoperative local compression hemostasis gradually due to the phenomenon of loose displacement, and the elastic bandages with self-adhesive functions are applied to clinical practice.

The bandage material of the self-adhesive elastic bandage is at the earliest cotton polyurethane elastic bandage, and the polyurethane bare silk, cotton polyurethane wrapping yarn, core spun yarn or co-twisting yarn is utilized to generate elasticity. Patent CN 112807476A discloses an antibacterial anti-infection hemostatic elastic bandage and a preparation method thereof, the elastic bandage comprises a base cloth and an adhesive coated on two sides of the base cloth, weft yarns of the base cloth are all cotton yarns, warp yarns of the base cloth are spandex yarns, and the elastic bandage has good antibacterial anti-infection effect and hemostatic effect. The patent CN 107802877A discloses a preparation method of a medical self-adhesive elastic bandage, which comprises the following raw materials of methacrylic anhydride, methyl methacrylate, methyl acrylate, deionized water and dodecylamine. However, chemical fibers such as spandex filaments and polyester are easy to cause allergy and are unfavorable for wound healing.

Therefore, in the process of technical innovation, people select cotton ammonia core spun yarns with more complex weaving process and higher cost to replace spandex yarns, and the pure cotton material has good air permeability, strong hygroscopicity and no bad stimulation to human bodies, is an ideal medical binding material, but has higher weaving technical requirements and is not popularized and applied in China. Besides high technical cost, the pure cotton elastic bandage has the problems of easy adhesion to wounds, easy wound healing affected by cotton fiber hairiness, easy new wound generation during detachment and replacement, and the like in clinical use. The high-elasticity material is prepared by compounding two or more non-woven fabrics or textiles with different performances in a chemical, thermal or mechanical processing mode, so that the process cost of the strong twisted yarn of the pure cotton is reduced, and the strong twisted yarn has the characteristics of softness, flexibility, moisture absorption and ventilation which are the same as those of the pure cotton material, has the characteristic of no adhesiveness, can keep skin dry and clean, and is beneficial to wound healing. Medical elastic bandages based on composite elastic bandages are gradually becoming the main development direction for the original elastic bandages.

Elastic bandages used in hospitals and markets at present are mostly made of common elastic cloth (such as mesh cloth, elastic cloth and lycra cloth), and users react with the conditions of allergy, air impermeability, insufficient elasticity, over-tightening and the like. The disposable elastic bandage is high in price, and the postoperative bandaging bandage is not suitable for daily wearing after rehabilitation, is complicated to pack, is difficult to realize operation completed by a single hand, and is not beneficial to self rescue after injury of a single person. Based on the thought, the composite elastic bandage which has low cost and is beneficial to wound healing and difficult to cause new wounds during detachment and replacement is developed.

Disclosure of Invention

Aiming at the defects existing in the prior art, the invention provides a composite non-woven fabric and application thereof in a quick emergency bandage, which can solve the problems of allergy, air impermeability, insufficient elasticity or overtightening existing in the process of using a common bandage.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:

The first aspect of the invention provides a preparation method of a composite non-woven fabric, which comprises the following specific preparation steps:

(1) The mass ratio is (2-3): 1, sequentially adding cotton fiber and bamboo fiber into a functional solution, heating to 80-90 ℃, and uniformly stirring to obtain a mixture;

(2) Regulating the pH value of the mixture obtained in the step (1) to 6-7, continuously heating and stirring at 80-90 ℃ until the system is in an adhesive state, separating, washing and drying to obtain mixed fibers;

(3) And (3) opening the mixed fibers obtained in the step (2), carding into a fiber web, paving the fiber web, then reinforcing and drying the fiber web, and winding the fiber web into a roll to obtain the composite non-woven fabric.

The composite non-woven fabric provided by the invention takes the cotton fiber and the bamboo fiber which are natural antibacterial materials as raw materials, and the mass ratio of the cotton fiber to the bamboo fiber is strictly controlled, so that the antibacterial effect of the prepared composite non-woven fabric is strongest; in addition, the chitin is added and evenly mixed with the cotton fiber and the bamboo fiber, so that the natural antibacterial performance of the cotton fiber and the bamboo fiber is fully exerted, the composite non-woven fabric has a good multi-layer structure and extensibility, and the prepared composite non-woven fabric is remarkably improved in the aspects of antibacterial and bacteriostatic properties, tissue structure, extensibility, comfort, appearance and the like.

Preferably, the functional solution is chitin, potassium carbonate and pure water according to the mass ratio of (1-2): (1-1.5): (45-55) and mixing.

Further preferably, the functional solution is chitin, potassium carbonate and pure water according to a mass ratio of 1.5:1.3: 50.

The chitin used in the invention is water-soluble chitin with deacetylation degree of 50% -65%.

The applicant finds that the composite non-woven fabric obtained by immersing cotton fiber and bamboo fiber in a certain mass ratio into a functional solution after controlling the concentration of chitin has better tissue structure, extensibility, air permeability and comfort.

In a second aspect, the present invention provides a quick-emergency bandage comprising a base material of a bottom layer, an antibacterial adhesive of a middle layer, and specific absorbent cotton of a surface layer; the bottom layer and the surface layer are bonded and fixed together through the middle layer; the base material is a composite non-woven fabric obtained according to the preparation method.

The quick emergency bandage provided by the invention has good antibacterial performance, good air permeability, elasticity and comfortableness, and can not cause allergy while promoting wound healing.

The antibacterial adhesive comprises the following raw materials in parts by weight:

40-50 parts of polyether polyol, 25-55 parts of polyester polyol, 25-40 parts of hydroxypropyl methacrylate, 90-145 parts of diisocyanate, 2-5 parts of zinc naphthenate, 2-15 parts of 1, 4-butanediol, 25-50 parts of organic solvent and 1-5 parts of composite antibacterial substance.

The preparation steps of the antibacterial adhesive are as follows:

(1) Dehydrating polyether polyol, polyester polyol and hydroxypropyl methacrylate to obtain a dehydrated polymer;

(2) Adding zinc naphthenate, diisocyanate and an organic solvent into the dehydrated polymer obtained in the step (1) under the condition of inert gas atmosphere and stirring, and stirring and reacting for 3-4 hours to obtain a prepolymer;

(3) Adding 1, 4-butanediol into the prepolymer obtained in the step (2), and reacting for 6-8 hours at 70-80 ℃ to obtain an adhesive;

(4) And (3) adding the composite antibacterial substance into the adhesive obtained in the step (3), and uniformly stirring to obtain the antibacterial adhesive.

Preferably, the mass ratio of the polyether polyol to the polyester polyol is 1: (1-2); the molecular weight of the polyether polyol and the polyester polyol is 1000-4000.

Further preferably, the mass ratio of the polyether polyol to the polyester polyol is 1:1.5.

According to the invention, polyether polyol and polyester polyol with certain molecular weights are compounded according to the proportion, so that the water resistance and the bonding strength of the antibacterial adhesive can be obviously improved. In addition, the hydroxypropyl methacrylate has better compatibility with polyether polyol and polyester polyol, and the hydroxypropyl methacrylate, the polyether polyol and the polyester polyol are mixed and then react, so that a crosslinking effect can be generated among molecules, and the tensile strength of the antibacterial adhesive can be improved. The antibacterial adhesive has the advantages of high elasticity, cold and heat resistance and strong antibacterial property, contains no water-soluble protein, can avoid anaphylactic symptoms in the use process, has certain antibacterial property by adding the composite antibacterial substance, and is beneficial to wound recovery.

The preparation steps of the composite antibacterial substance are as follows:

And respectively dissolving omega-chloromethyl longifolene and cinnamamide in methanol to obtain a solution 1 and a solution 2, adding the solution 1 into the solution 2, heating in a water bath at 65-75 ℃ and stirring for 1-2h, cooling to room temperature after the reaction is finished, filtering to remove insoluble solids, washing filtrate with pure water, and drying and separating an organic phase to obtain the composite antibacterial substance.

The omega-chloromethyl longifolene reference document omega-aminomethyl longifolene synthesis, characterization and antibacterial activity synthesis are used in the invention.

According to the invention, omega-chloromethyl longifolene and cinnamamide are used as raw materials to synthesize a composite antibacterial substance, and on the basis of not changing the molecular structure of omega-chloromethyl longifolene, functional groups with hydrophobicity and bioactivity are constructed through cinnamamide to synthesize the composite antibacterial substance containing longifolene molecular structure and having hydrophobicity, and the composite antibacterial substance has better waterproofness and antibacterial property.

Preferably, the mole ratio of omega-chloromethyllongifolene to cinnamamide is 1: (1-1.3).

Further preferably, the mole ratio of ω -chloromethyllongifolene to cinnamamide is 1: (1-1.2).

Applicants found that strictly controlling the molar ratio of omega-chloromethyllongifolene to cinnamamide is beneficial to improving the synthetic efficiency of the composite antibacterial.

The specific absorbent cotton is obtained by soaking absorbent cotton in polydopamine aqueous solution and drying.

Preferably, the mass concentration of the polydopamine aqueous solution is 0.01-0.5%, and the particle size of the polydopamine is 70-100nm.

After the specific absorbent cotton used in the invention is treated by the polydopamine aqueous solution with a certain concentration, active oxygen can be effectively eliminated, and the antioxidation capability of the absorbent cotton can be exerted. The specific absorbent cotton has antibacterial and antioxidant functions, and can eliminate infection, improve wound microenvironment, and promote wound healing. In addition, polydopamine is combined with a composite antibacterial network through the interaction of amino groups and catechol groups of polydopamine and amino groups in the composite antibacterial, so that the adhesive force of specific absorbent cotton on a base material is enhanced.

Compared with the prior art, the invention has the following beneficial effects:

1. The composite non-woven fabric provided by the invention takes the cotton fiber and the bamboo fiber which are natural antibacterial materials as raw materials, is mixed with the chitin, fully exerts the natural antibacterial performance of the cotton fiber and the bamboo fiber, and has good multilayer structure and extensibility.

2. The prepared composite non-woven fabric is used as a base material in the quick emergency bandage, and the prepared quick emergency bandage has the characteristics of strong elasticity, good ductility, difficult deformation, softness, ventilation, no adhesiveness and the like, and is an ideal material for wound dressing.

3. The antibacterial adhesive provided by the invention has the excellent performances of high elasticity, cold and heat resistance and strong antibacterial property, does not contain water-soluble protein, can prevent skin allergy of a user, and is more suitable for being used as a material of a medical self-adhesive elastic bandage.

Drawings

Fig. 1 is a schematic structural view of the quick emergency bandage of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

In order to better illustrate the embodiments of the present invention, the following examples are provided for further illustration. The parts by weight described in the examples below may be gram, kilogram, ton or other unit of mass.

The cotton fiber and the bamboo fiber used in the invention are purchased from Weiqing ecological technology Co., ltd; the chitin used was purchased from the company of new carbon materials of the new class of the EQ; the cinnamamide used was purchased from Shanghai source foliar organisms; the polyester polyol used was of the brand PE1320 (molecular weight 2000) available from Huafeng group; the organic solvent is N, N-dimethylformamide; the used polyether polyol has the brand of ZM-260 and is purchased from catalpa germination chemical industry; the hydroxypropyl methacrylate used was purchased from Shandong Popland; the diisocyanate used was hexamethylene diisocyanate, available from Jinan Toyoda Co., ltd; polydopamine (70-100 nm) was purchased from Siam Azimuth Biotech Inc.

Example 1

A preparation method of a composite non-woven fabric comprises the following specific steps:

(1) Sequentially adding 500g of cotton fiber and 250g of bamboo fiber into 200mL of functional solution, heating to 85 ℃, and uniformly stirring to obtain a mixture;

(2) Regulating the pH value of the mixture obtained in the step (1) to 6, continuously heating and stirring at 85 ℃ until the system is in an adhesive state, separating, washing with pure water for 3 times, and drying at 80 ℃ to obtain mixed fibers;

The functional solution used was obtained by mixing 6g of chitin, 5.2g of potassium carbonate and 200mL of pure water.

Example 2

A method for preparing a composite nonwoven fabric, the specific embodiment of which is the same as in example 1, except that the functional solution used is obtained by mixing 5.2g of potassium carbonate with 200mL of pure water.

Example 3

A preparation method of a composite nonwoven fabric, the specific embodiment is the same as in example 1, except that the functional solution used is obtained by mixing 4g of chitin, 5.2g of potassium carbonate and 200mL of pure water.

Comparative example 1

A preparation method of a composite non-woven fabric, the specific implementation mode is the same as that of example 1, except that no bamboo fiber is added.

Preparation example 1

The preparation method of the composite antibacterial substance comprises the following steps:

1mol of omega-chloromethyl longifolene and 1.1mol of cinnamamide are respectively dissolved in 25mL of methanol to obtain a solution 1 and a solution 2, the solution 1 is added into the solution 2, the solution is heated in a water bath at 70 ℃ and stirred for 1.5 hours, the reaction is finished, the solution is cooled to room temperature, insoluble solids are removed by filtration, the filtrate is washed for 3 times by pure water, and an organic phase is dried by anhydrous sodium sulfate and subjected to rotary evaporation separation to obtain the composite antibacterial substance.

Preparation example 2

The procedure for the preparation of the complex antibacterial substance was the same as in preparation example 1, except that 0.9mol of cinnamamide was used.

Preparation example 3

The procedure for the preparation of the complex antibacterial material was the same as in preparation example 1, except that 0.9mol of omega-chloromethyl longifolene was used.

Preparation example 4

The preparation method of the antibacterial adhesive comprises the following steps:

(1) Dehydrating 90g of polyether polyol, 80g of polyester polyol and 70g of hydroxypropyl methacrylate at the temperature of 105 ℃ and 0.1Mpa for 2 hours at 1000r/min to obtain a dehydrated polymer;

(2) Adding 8g of zinc naphthenate, 240g of diisocyanate and 70g of organic solvent into the dehydrated polymer obtained in the step (1) under the condition of stirring (the rotating speed is 700 r/min) in a nitrogen gas atmosphere, and stirring and reacting for 3.5h to obtain a prepolymer;

(3) Adding 20g of 1, 4-butanediol into the prepolymer obtained in the step (2), and reacting for 7 hours at 75 ℃ to obtain an adhesive;

The complex antibacterial material used was obtained in preparation example 1.

Preparation example 5

The procedure for preparing the antibacterial adhesive was the same as in preparation example 4, except that the composite antibacterial material used was obtained in preparation example 2.

Preparation example 6

The procedure for preparing the antibacterial adhesive was the same as in preparation example 4, except that the composite antibacterial material used was obtained in preparation example 3.

Preparation example 7

The procedure for preparing the antibacterial adhesive was the same as in preparation example 4, except that 90g and 65g of polyether polyol and polyester polyol were used, respectively.

Preparation example 8

The procedure for preparing the antimicrobial adhesive was the same as in preparation example 4, except that polyester polyol was not used.

Preparation example 9

The preparation method of the specific absorbent cotton comprises the following steps:

1kg of absorbent cotton is taken and soaked in 2L of polydopamine aqueous solution with the mass concentration of 0.1 percent for 1 hour, and then dried at the temperature of 60 ℃ to obtain the specific absorbent cotton.

Preparation example 10

The procedure for the preparation of the antibacterial adhesive was the same as in preparation example 4, except that omega-chloromethyl longifolene of equal mass was used instead of the complex antibacterial substance.

Example 4

A quick-rescue bandage, which comprises a base material of a bottom layer, an antibacterial adhesive of a middle layer and specific absorbent cotton of a surface layer; the bottom layer and the surface layer are fixed together through the bonding of the middle layer.

The base material used was the composite nonwoven fabric prepared in example 1; the antibacterial adhesive used was obtained in preparation example 4; the specific absorbent cotton used was obtained in preparation 9.

Example 5

The base material used was the composite nonwoven fabric prepared in example 1; the antibacterial adhesive used was obtained in preparation example 5; the specific absorbent cotton used was obtained in preparation 9.

Example 6

The base material used was the composite nonwoven fabric prepared in example 1; the antibacterial adhesive used was obtained in preparation example 6; the specific absorbent cotton used was obtained in preparation 9.

Example 7

The base material used was the composite nonwoven fabric prepared in example 1; the antibacterial adhesive used was obtained in preparation example 7; the specific absorbent cotton used was obtained in preparation 9.

Example 8

The base material used was the composite nonwoven fabric prepared in example 1; the antibacterial adhesive used was obtained in preparation example 8; the specific absorbent cotton used was obtained in preparation 9.

Example 9

The base material used was the composite nonwoven fabric prepared in example 1; the antibacterial adhesive used was obtained in preparation example 10; the specific absorbent cotton used was obtained in preparation 9.

Comparative example 2

A quick emergency bandage, which comprises a base material of a bottom layer, an antibacterial adhesive of a middle layer and common absorbent cotton of a surface layer; the bottom layer and the surface layer are fixed together through the bonding of the middle layer.

The base material is stretch cloth; the antibacterial adhesive used was obtained in preparation example 4; the specific absorbent cotton used was obtained in preparation 9. The schematic structure of the quick emergency bandage prepared in embodiments 4-9 of the present invention is shown in fig. 1, and the whole structure comprises a quick bandaging area a, a tail end bonding area b, a bandaging extension area c, a bandaging positioning area d and a wound surface contact area e, wherein any medical dressing capable of promoting wound healing and other components or drug-containing objects with similar forms can be loaded in the wound surface contact area e.

The using method of the quick emergency bandage comprises the following steps: opening the quick emergency bandage, determining the position of a wound to be bandaged by using the bandaging positioning area d, covering the wound surface contact area e on the wound surface of the wound, pulling the quick bandaging area a and the bandaging extension area c open in sequence, winding and wrapping completely, and fixing the wound surface contact area e by using the tail end bonding area b to finish bandaging.

The quick emergency bandage has a length of 8cm and a width of 5cm in a natural state, a length of 60cm when unfolded, and a total length of 120cm when unfolded. It should be noted that the size of the quick-action bandage is limited to the quick-action bandage prepared by the embodiment of the present invention, and in actual production, the quick-action bandage can be manufactured to different specifications according to different requirements.

Performance testing

Performance tests were performed on the composite nonwovens prepared in examples 1-3 and comparative example 1 for 1-4:

1. wet strength: after 10g of the composite nonwoven fabrics obtained in examples 1 to 3 and comparative example 1 and commercially available elastic fabrics were immersed in deionized water at 20℃and 65% relative humidity for 15min, respectively, the test pieces were taken out and hung vertically until no continuous water drops were observed, and wet tensile strength was measured according to GB/T465.2;

2. Hygroscopicity (characterized by water absorption): 10g of the composite nonwoven fabrics obtained in examples 1 to 3 and comparative example 1 and commercially available elastic fabrics were immersed in deionized water at 20℃and 65% relative humidity for 5 minutes, respectively, and after taking out the samples, the samples were hung vertically until no continuous water beads were dropped, and after obtaining the soaked samples, the weight of the soaked samples was weighed, and the water absorption was calculated according to the following formula: water absorption= (wet sample mass-dry sample mass)/dry sample mass×100%;

3. Softness: measuring the bending performance of the composite non-woven fabric by using a bevel method according to the standard GB/T18318.1-2009;

4. Air permeability: with reference to GB/T5453-2007 test, the pressure was 100Pa and the test area was 20cm ².

The specific test results are shown in Table 1.

5. Bacteriostasis: the quick emergency bandages prepared in examples 4 to 9 and comparative example 2 were washed with water 0 times, 5 times and 10 times, respectively, and then tested for antibacterial properties using the GB/T20944.2-2007 standard.

The specific test results are shown in Table 2.

TABLE 1

Numbering device	Example 1	Example 2	Example 3	Comparative example 1	Stretch cloth
						Thickness (mm)	0.30	0.31	0.30	0.32	0.30
Wet Strength (N/cm)	4.50	3.64	4.05	3.86	3.93
						Hygroscopicity (%)	978	984	990	794	672
Softness (gf cm ²/cm)	0.0452	0.0860	0.0757	0.1067	0.1208
						Air permeability (mm/s)	2378	2201	2257	1502	1032

TABLE 2

As can be seen from Table 1, the composite nonwoven fabric prepared in example 1 has good comprehensive properties, moderate thickness, and best wet strength, hygroscopicity, softness and air permeability; the functional solutions used in examples 2 and 3 are not added with chitin, and the added chitin is beyond the preferred range, so that the tissue structure of cotton fibers and bamboo fibers is affected, and the comprehensive performance of the prepared composite non-woven fabric is reduced; in comparative example 1, the composite nonwoven fabric prepared was the worst in overall performance, but also significantly better than the elastic fabric, since no bamboo fiber was added.

As can be seen from table 2, the quick-acting emergency bandage prepared in example 4 has the best bacteriostasis after washing with water for 0, 5 and 10 times; in examples 5 and 6, the preparation conditions of the composite antibacterial substance in the adhesive are changed, so that the waterproof property and the antibacterial property of the adhesive are reduced; the polyether polyol and the polyester polyol in the preparation process of the antibacterial adhesive used in the embodiment 7 are out of the preferred range, the polyester polyol is not used in the preparation process of the antibacterial adhesive used in the embodiment 8, the performance of the prepolymer is reduced, the viscosity of the adhesive is reduced, and antibacterial substances are easy to fall off after washing, so that the antibacterial property of the prepared rapid emergency bandage is reduced; the absence of cinnamamide in all of the composite antimicrobial materials of example 9 resulted in a decrease in the antimicrobial properties of the composite antimicrobial materials, and thus in a decrease in the antimicrobial properties of the quick emergency bandages.

The basic material used in comparative example 2 is stretch cloth, which has poor antibacterial property, resulting in the worst antibacterial property of the prepared quick emergency bandage.

While the application has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that the present application is not limited thereto, and that the application is not limited thereto, but rather by the scope of the appended claims, the technical content disclosed by the application is utilized to make a little change or modification equivalent to the equivalent embodiment, but any simple modification, equivalent variation and modification of the above embodiment according to the technical content of the application still belongs to the scope of the technical proposal.

Claims

1. A quick emergency bandage, which is characterized by comprising a base material of a bottom layer, an antibacterial adhesive of a middle layer and specific absorbent cotton of a surface layer; the bottom layer and the surface layer are bonded and fixed together through the middle layer; the base material is a composite non-woven fabric, and the specific preparation steps are as follows:

(3) Opening the mixed fibers obtained in the step (2), carding into a fiber web, paving the fiber web, then reinforcing and drying the fiber web, and winding the fiber web into a roll to obtain a composite non-woven fabric;

the functional solution is prepared from chitin, potassium carbonate and pure water according to the mass ratio of (1-2): (1-1.5): (45-55) mixing to obtain;

40-50 parts of polyether polyol, 25-55 parts of polyester polyol, 25-40 parts of hydroxypropyl methacrylate, 90-145 parts of diisocyanate, 2-5 parts of zinc naphthenate, 2-15 parts of 1, 4-butanediol, 25-50 parts of organic solvent and 1-5 parts of composite antibacterial substance;

The preparation steps of the antibacterial adhesive are as follows:

(4) Adding a composite antibacterial substance into the adhesive obtained in the step (3), and uniformly stirring to obtain an antibacterial adhesive;

The preparation steps of the composite antibacterial substance are as follows:

Respectively dissolving omega-chloromethyl longifolene and cinnamamide in methanol to obtain a solution 1 and a solution 2, adding the solution 1 into the solution 2, heating in a water bath at 65-75 ℃ and stirring for 1-2h, cooling to room temperature after the reaction is finished, filtering to remove insoluble solids, washing filtrate with pure water, and drying and separating an organic phase to obtain a composite antibacterial substance;

2. A quick emergency bandage according to claim 1, wherein the mass ratio of polyether polyol to polyester polyol is 1: (1-2); the molecular weight of the polyether polyol and the polyester polyol is 1000-4000.

3. A quick emergency bandage according to claim 1, wherein the molar ratio of ω -chloromethyllongifolene to cinnamamide is 1: (1-1.3).

4. The rapid emergency bandage according to claim 1, wherein the mass concentration of the polydopamine aqueous solution is 0.01-0.5%, and the particle size of the polydopamine is 70-100nm.