An antibacterial transparent nylon composite material, its preparation method and application

Abstract

This invention discloses an antibacterial transparent nylon composite material, its preparation method, and its application. The raw materials for preparing the antibacterial transparent nylon composite material include the following components: nylon, a furan-based antibacterial agent, an antioxidant, a lubricant, and an anti-yellowing agent; wherein the furan-based antibacterial agent has the structure shown in the following formula: where R is selected from alkyl groups such as methyl and ethyl, 4-aminobutane, or benzyl. The antibacterial transparent nylon composite material provided by this invention exhibits excellent transparency and antibacterial properties; simultaneously, the preparation method of this nylon composite material is simple and easy to implement, with relatively economical input costs, possessing good practicality and operability, and is suitable for industrial-scale production.

Description

Technical Field

[0001] This invention belongs to the field of nylon composite material technology, specifically relating to an antibacterial transparent nylon composite material, its preparation method, and its application. Background Technology

[0002] Nylon (PA6), hailed as one of the five major engineering plastics, is renowned for its excellent processing properties, superior temperature resistance, outstanding chemical resistance, and excellent lubrication performance. It has already seen widespread deployment and application in home appliances, electronics, and automotive parts. However, the shortcomings of conventional nylon materials in terms of transparency and antibacterial properties have undoubtedly severely restricted its further development and application in the automotive, electronics, and home appliance sectors. With the continuous expansion of nylon's application areas, more stringent requirements are being placed on the material's transparency, antibacterial properties, and other related characteristics.

[0003] In the traditional manufacturing process of antibacterial and flame-retardant nylon, commonly used antibacterial agents can be mainly divided into two categories: inorganic antibacterial agents and organic antibacterial agents. Inorganic antibacterial agents are typically composed of metal elements such as copper, zinc, and silver. These agents possess excellent antibacterial properties but affect the transparency of the material, failing to meet the specific requirements of many products. Organic antibacterial agents require high dosages and are prone to decomposition at high temperatures, thus failing to meet the required transparency for the product.

[0004] For example, patent CN200610123560.1 discloses an antibacterial nylon plastic material, which mainly improves the antibacterial properties of the alloy material through an inorganic antibacterial agent. However, this antibacterial agent is white, which reduces the light transmittance of the material. Patent CN202110604927.6 discloses antibacterial nylon 6 containing a guanidine group. This technical solution uses 6-guanidine hexanoic acid as the antibacterial agent for nylon and adds it during the polymerization process of nylon. This solution is costly and has a complex processing technology. Therefore, providing an economical, simple-to-prepare, and highly transparent antibacterial transparent nylon composition is an urgent problem to be solved. Summary of the Invention

[0005] The main objective of this invention is to provide an antibacterial transparent nylon composite material, its preparation method, and its application, so as to overcome the shortcomings of the prior art.

[0006] To achieve the aforementioned objectives, the technical solution adopted by this invention includes:

[0007] This invention provides an antibacterial transparent nylon composite material. The raw materials for preparing the antibacterial transparent nylon composite material include the following components: nylon, furan antibacterial agent, antioxidant, lubricant, and anti-yellowing agent.

[0008] The furan antibacterial agent has a structure as shown in formula (I):

[0009]

[0010] R is selected from alkyl groups such as methyl and ethyl, 4-aminobutane, or benzyl.

[0011] The present invention also provides a method for preparing the aforementioned antibacterial transparent nylon composite material, which includes: uniformly mixing nylon, furan antibacterial agent, antioxidant, lubricant and anti-yellowing agent, and then adding the obtained mixture to a twin-screw extruder for granulation treatment to obtain the antibacterial transparent nylon composite material.

[0012] The embodiments of the present invention also provide the use of the aforementioned antibacterial transparent nylon composite material in the preparation of electronic and electrical appliance housings, household appliance housings, or automotive interior and exterior trims.

[0013] This invention also provides a furan-based antibacterial agent having a structure as shown in formula (I):

[0014]

[0015] R is selected from alkyl groups such as methyl and ethyl, 4-aminobutane, or benzyl.

[0016] The present invention also provides a method for preparing the aforementioned furan antibacterial agent, which includes: in a protective atmosphere, performing a polymerization reaction on a mixed reaction system containing 2,5-furandicarboxaldehyde, 2-aminoalkylamide and solvent to obtain a furan antibacterial agent.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] (1) The furan antibacterial agent provided by the present invention is an organic antibacterial agent with good compatibility with nylon. Under the shearing of the twin screw, it can be fully dispersed in the nylon matrix, ensuring the excellent long-lasting antibacterial properties and light transmittance of the composite material.

[0019] (2) The manufacturing process of the antibacterial transparent nylon composite material in this invention is simple and easy to implement. At the same time, it is more economical and affordable in terms of cost compared with other solutions. Its operation process is flexible and convenient, and it is highly practical, making it very suitable for large-scale industrial-grade production operations. Detailed Implementation

[0020] In view of the deficiencies of the prior art, the inventors of this case, through long-term research and extensive practice, have proposed the technical solution of this invention. The technical solution of this invention will be clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0021] Specifically, as one aspect of the technical solution of the present invention, the raw materials of an antibacterial transparent nylon composite material include the following components: nylon, furan antibacterial agent, antioxidant, lubricant and anti-yellowing agent;

[0022] The furan antibacterial agent has a structure as shown in formula (I):

[0023]

[0024] R is selected from alkyl groups such as methyl and ethyl, 4-aminobutane, or benzyl.

[0025] Furthermore, the R in the furan antibacterial agent is derived from any one or more combinations of 2-aminopropionamide, 2-aminobutyramide, 2-aminohexamamide, and 2-aminopentanamide, and is not limited thereto.

[0026] The furan-based antibacterial agent in this invention is an organic antibacterial agent that can be fully dispersed in the matrix nylon, thereby improving the antibacterial properties and toughness of the material.

[0027] In some preferred embodiments, the raw materials for preparing the antibacterial transparent nylon composite material include the following components by weight percentage: 15%–76% nylon, 0.5%–5% furan antibacterial agent, 0.1%–2% antioxidant, 0.1%–5% lubricant, and 0.1% N3% anti-yellowing agent.

[0028] Furthermore, the raw materials for preparing the antibacterial transparent nylon composite material include the following components by weight percentage: nylon 45%-65%, furan antibacterial agent 0.5%-4%, antioxidant 0.1%-2%, lubricant 0.1%-5%, and anti-yellowing agent 0.5% N2.

[0029] Furthermore, the raw materials for preparing the antibacterial transparent nylon composite material include the following components by weight percentage: nylon 45%-65%, furan antibacterial agent 1%-5%, antioxidant 0.2%-2%, lubricant 0.1%-5%, and anti-yellowing agent 0.5%-3%.

[0030] Furthermore, the raw materials for preparing the antibacterial transparent nylon composite material include the following components by weight percentage: nylon 45%-65%, furan antibacterial agent 1%-5%, antioxidant 0.2%-2%, lubricant 0.1%-1%, and anti-yellowing agent 0.5%-1%.

[0031] In some preferred embodiments, the nylon includes, but is not limited to, semi-aromatic transparent nylon.

[0032] In some preferred embodiments, the antioxidant includes any one or more combinations of 1098, 1010, and 1076, but is not limited thereto.

[0033] In some preferred embodiments, the lubricant includes any one or more combinations of E wax, aluminum stearate, and silicone, but is not limited thereto.

[0034] In some preferred embodiments, the anti-yellowing agent includes, but is not limited to, any one or more combinations of tris(2,4-di-tert-butylphenyl) phosphite, di(2,2,6,6-tetramethyl-3-piperidinamido)-isophthalamide, and bis(2,4-dicumylphenyl)pentaerythritol diphosphite.

[0035] Another aspect of the present invention provides a method for preparing the aforementioned antibacterial transparent nylon composite material, comprising:

[0036] Nylon, furan antibacterial agent, antioxidant, lubricant and anti-yellowing agent are uniformly mixed, and then the resulting mixture is added to a twin-screw extruder for granulation to obtain an antibacterial transparent nylon composite material.

[0037] In some preferred embodiments, the preparation method specifically includes: placing nylon, furan antibacterial agent, antioxidant, lubricant and anti-yellowing agent in a high-speed kneading device, and stirring and mixing for 5-25 minutes at a speed of 100-500 rpm / min.

[0038] Furthermore, the rotational speed is 100-200 rpm / min.

[0039] For example, the high-speed kneading device can be a high-speed kneader.

[0040] In some preferred embodiments, the temperature parameters of the twin-screw extruder from the feed port to the die head include: zone 1 temperature 190-210℃, zone 2 temperature 260-270℃, zone 3 temperature 260-270℃, zone 4 temperature 260-270℃, zone 5 temperature 260-270℃, zone 6 temperature 245-250℃, zone 7 temperature 240-250℃, die head temperature 260-270℃, and rotation speed 300-450 rpm / min.

[0041] In some more specific embodiments, the preparation method of the antibacterial transparent nylon composite material includes the following steps:

[0042] (1) Mix nylon, furan antibacterial agent, antioxidant, anti-yellowing agent and optional lubricant evenly to obtain the mixed material;

[0043] (2) The mixed material is added to a twin-screw extruder and pelletized by a traction machine to obtain an antibacterial transparent nylon composition.

[0044] Further, in step (1), the conditions for uniform mixing are as follows: each component is placed in a high-speed kneader, and the rotation speed is maintained at 100-200 rpm / min for 5-20 min.

[0045] Further, in step (2), the temperatures of each zone of the twin-screw extruder from the feed port to the die head are as follows: Zone 1 temperature is 190-210℃, Zone 2 temperature is 260-270℃, Zone 3 temperature is 260-270℃, Zone 4 temperature is 260-270℃, Zone 5 temperature is 260-270℃, Zone 6 temperature is 245-250℃, Zone 7 temperature is 240-250℃, the die head temperature is 260-270℃, and the rotation speed is 300-450 rpm / min.

[0046] Another aspect of the present invention provides the use of the aforementioned antibacterial transparent nylon composite material in the preparation of electronic and electrical housings, household appliance housings, or automotive interior and exterior trim.

[0047] Another aspect of the present invention provides a furan-based antibacterial agent having a structure as shown in formula (I):

[0048]

[0049] R is selected from alkyl groups such as methyl and ethyl, 4-aminobutane, or benzyl.

[0050] Another aspect of the present invention provides a method for preparing the aforementioned furan-based antibacterial agent, comprising: performing a polymerization reaction on a mixed reaction system containing 2,5-furandicarboxaldehyde, 2-aminoalkylamide, and a solvent in a protective atmosphere to obtain the furan-based antibacterial agent.

[0051] In some preferred embodiments, the 2-aminoalkylamide includes any one or more combinations of 2-aminopropionamide, 2-aminobutyramide, 2-aminohexamamide, and 2-aminopentanamide, and is not limited thereto.

[0052] In some preferred embodiments, the solvent includes tetrahydrofuran and / or toluene, but is not limited thereto.

[0053] In some preferred embodiments, the molar ratio of 2,5-furandicarboxaldehyde to 2-aminoalkylamide is 1 to 4:1.

[0054] In some more specific embodiments, the preparation method of the furan-based antibacterial agent includes:

[0055] 0.1 mol of 2,5-furandicarboxaldehyde, 0.5 mol of 2-aminoalkylamide, and 150 ml of tetrahydrofuran were added to a round-bottom flask and stirred until a homogeneous solution was obtained. The flask was then sealed and subjected to constant temperature polymerization in a 60°C oil bath for 6-12 hours. After the polymerization reaction was completed, the solution was repeatedly washed with solvent, filtered, and vacuum dried to constant weight to obtain the polymerized furan-based antibacterial agent.

[0056] This invention prepares an organic furan-based antibacterial agent via a free radical reaction method. This polymer exhibits good dispersibility and can be fully dispersed under the shearing action of a twin-screw extruder, thereby improving the antibacterial properties of nylon composites. Furthermore, furan-based antibacterial agents are organic antibacterial agents, which have good compatibility with nylon and can maintain the light transmittance of transparent nylon.

[0057] The technical solution of the present invention will be further described in detail below with reference to several preferred embodiments. These embodiments are implemented on the premise of the technical solution of the invention, and provide detailed implementation methods and specific operation processes. However, the protection scope of the present invention is not limited to the following embodiments.

[0058] Unless otherwise specified, the experimental materials used in the examples below can be purchased from conventional biochemical reagent companies.

[0059] Preparation Example 1

[0060] The preparation of the furan-based antibacterial agent used in the following examples specifically includes the following steps:

[0061] 0.1 mol of 2,5-furandicarboxaldehyde, 0.4 mol of 2-aminobutyramide, and 150 ml of tetrahydrofuran were added to a round-bottom flask, stirred to form a homogeneous solution, and then sealed. The flask was then placed in a 60°C oil bath for constant-temperature polymerization. After 12 hours of polymerization, the solution was repeatedly washed with solvent, filtered, and vacuum dried to constant weight to obtain the polymerized furan-based antibacterial agent.

[0062] The prepared furan-based antibacterial agent was characterized by NMR. The chemical shifts were δ = 8.4–8.6 ppm for the hydrogen atoms at the 2 and 5 positions of the furanimide polymer; δ = 6.53–6.57 ppm for the two hydrogen atoms at the 3 and 4 positions of the furanimide polymer; δ = 3.39 ppm for the hydrogen atoms at the amine position of the furanimide polymer; and δ = 0.85–0.87 ppm for the hydrogen atoms at the two methyl groups on either side of the furanimide polymer. This confirms the successful preparation of the furan-based antibacterial agent, which has the following structure:

[0063]

[0064] Preparation Example 2

[0065] 0.1 mol of 2,5-furandicarboxaldehyde, 0.4 mol of 2-aminopentanamide, and 150 ml of tetrahydrofuran were added to a round-bottom flask, stirred to form a homogeneous solution, and then sealed. The flask was then placed in a 60°C oil bath for constant-temperature polymerization. After 12 hours of polymerization, the solution was repeatedly washed with solvent, filtered, and vacuum dried to constant weight to obtain the polymerized furan-based antibacterial agent.

[0066] Preparation Example 3

[0067] 0.1 mol of 2,5-furandicarboxaldehyde, 0.3 mol of 2-aminopentanamide, and 150 ml of tetrahydrofuran were added to a round-bottom flask, stirred to form a homogeneous solution, and then sealed. The flask was then placed in a 60°C oil bath for constant-temperature polymerization. After 12 hours of polymerization, the solution was repeatedly washed with solvent, filtered, and vacuum dried to constant weight to obtain the polymerized furan-based antibacterial agent.

[0068] Example 1

[0069] Weigh each component according to Table 1 below:

[0070] Table 1

[0071]

[0072] (1) Weigh the dried nylon, the prepared furan antibacterial agent, the antioxidant, E wax, the anti-yellowing agent, and the lubricant according to the weight percentage formula;

[0073] (2) Place the weighed components in a high-speed mixer at a speed of 350 rpm / min and a stirring time of 20 min.

[0074] (3) The mixture obtained in step (2) is added to the feeding hopper of a twin-screw extruder. The parameters of the twin-screw extruder are: zone 1 temperature 195℃, zone 2 temperature 260℃, zone 3 temperature 260℃, zone 4 temperature 260℃, zone 5 temperature 260℃, zone 6 temperature 250℃, zone 7 temperature 250℃, die head temperature 270℃, and rotation speed 300rpm / min. After being pulled and pelletized by the traction machine, nylon composite material is obtained.

[0075] Example 2

[0076] Weigh each component according to Table 2 below:

[0077] Table 2

[0078]

[0079] (1) Weigh the dried nylon, the prepared furan antibacterial agent, the antioxidant, E wax, the anti-yellowing agent, and the lubricant according to the weight percentage formula;

[0080] (2) Place the weighed components in a high-speed mixer at a speed of 350 rpm / min and a stirring time of 20 min.

[0081] (3) The mixture obtained in step (2) is added to the feeding hopper of a twin-screw extruder. The parameters of the twin-screw extruder are: zone 1 temperature 195℃, zone 2 temperature 260℃, zone 3 temperature 260℃, zone 4 temperature 260℃, zone 5 temperature 260℃, zone 6 temperature 250℃, zone 7 temperature 250℃, die head temperature 270℃, and rotation speed 300rpm / min. After being pulled and pelletized by the traction machine, nylon composite material is obtained.

[0082] Example 3

[0083] Weigh each component according to Table 3 below:

[0084] Table 3

[0085]

[0086] (1) Weigh the dried nylon, the prepared furan antibacterial agent, the antioxidant, E wax, the anti-yellowing agent, and the lubricant according to the weight percentage formula;

[0087] (2) Place the weighed components in a high-speed mixer at a speed of 350 rpm / min and a stirring time of 20 min.

[0088] (3) The mixture obtained in step (2) is added to the feeding hopper of a twin-screw extruder. The parameters of the twin-screw extruder are: zone 1 temperature 195℃, zone 2 temperature 260℃, zone 3 temperature 260℃, zone 4 temperature 260℃, zone 5 temperature 260℃, zone 6 temperature 250℃, zone 7 temperature 250℃, die head temperature 270℃, and rotation speed 300rpm / min. After being pulled and pelletized by the traction machine, nylon composite material is obtained.

[0089] Example 4

[0090] Weigh each component according to Table 4 below:

[0091] Table 4

[0092]

[0093] (1) Weigh the dried nylon, the prepared furan antibacterial agent, the antioxidant, E wax, the anti-yellowing agent, and the lubricant according to the weight percentage formula;

[0094] (2) Place the weighed components in a high-speed mixer at a speed of 350 rpm / min and a stirring time of 20 min.

[0095] (3) The mixture obtained in step (2) is added to the feeding hopper of a twin-screw extruder. The parameters of the twin-screw extruder are: zone 1 temperature 195℃, zone 2 temperature 260℃, zone 3 temperature 260℃, zone 4 temperature 260℃, zone 5 temperature 260℃, zone 6 temperature 250℃, zone 7 temperature 250℃, die head temperature 270℃, and rotation speed 300rpm / min. After being pulled and pelletized by the traction machine, nylon composite material is obtained.

[0096] Example 5

[0097] Weigh each component according to Table 5 below:

[0098] Table 5

[0099]

[0100]

[0101] (1) Weigh the dried nylon, the prepared furan antibacterial agent, the antioxidant, E wax, the anti-yellowing agent, and the lubricant according to the weight percentage formula;

[0102] (2) Place the weighed components in a high-speed mixer at a speed of 350 rpm / min and a stirring time of 20 min.

[0103] (3) The mixture obtained in step (2) is added to the feeding hopper of a twin-screw extruder. The parameters of the twin-screw extruder are: zone 1 temperature 195℃, zone 2 temperature 260℃, zone 3 temperature 260℃, zone 4 temperature 260℃, zone 5 temperature 260℃, zone 6 temperature 250℃, zone 7 temperature 250℃, die head temperature 270℃, and rotation speed 300rpm / min. After being pulled and pelletized by the traction machine, nylon composite material is obtained.

[0104] Comparative Example 1

[0105] Weigh each component according to Table 6 below:

[0106] Table 6

[0107]

[0108] (1) Weigh the dried furan antibacterial agent, antioxidant, E wax, anti-yellowing agent and lubricant according to the weight percentage formula;

[0109] (2) Place the weighed components in a high-speed mixer at a speed of 350 rpm / min and a stirring time of 20 min.

[0110] (3) The mixture obtained in step (2) is added to the feeding hopper of a twin-screw extruder. The parameters of the twin-screw extruder are: zone 1 temperature 195℃, zone 2 temperature 260℃, zone 3 temperature 260℃, zone 4 temperature 260℃, zone 5 temperature 260℃, zone 6 temperature 250℃, zone 7 temperature 250℃, die head temperature 270℃, and rotation speed 300rpm / min. After being pulled and pelletized by the traction machine, nylon composite material is obtained.

[0111] Comparative Example 2

[0112] Weigh each component according to Table 7 below:

[0113] Table 7

[0114]

[0115]

[0116] (1) Weigh the dried nylon, the prepared furan antibacterial agent, the antioxidant, E wax, the anti-yellowing agent, and the lubricant according to the weight percentage formula;

[0117] (2) Place the weighed components in a high-speed mixer at a speed of 350 rpm / min and a stirring time of 20 min.

[0118] (3) The mixture obtained in step (2) is added to the feeding hopper of a twin-screw extruder. The parameters of the twin-screw extruder are: zone 1 temperature 195℃, zone 2 temperature 260℃, zone 3 temperature 260℃, zone 4 temperature 260℃, zone 5 temperature 260℃, zone 6 temperature 250℃, zone 7 temperature 250℃, die head temperature 270℃, and rotation speed 300rpm / min. After being pulled and pelletized by the traction machine, nylon composite material is obtained.

[0119] Comparative Example 3

[0120] Weigh each component according to Table 8 below:

[0121] Table 8

[0122]

[0123] (1) Weigh the dried nylon, the prepared furan antibacterial agent, the antioxidant, E wax, the anti-yellowing agent, and the lubricant according to the weight percentage formula;

[0124] (2) Place the weighed components in a high-speed mixer at a speed of 350 rpm / min and a stirring time of 20 min.

[0125] (3) The mixture obtained in step (2) is added to the feeding hopper of a twin-screw extruder. The parameters of the twin-screw extruder are: zone 1 temperature 195℃, zone 2 temperature 260℃, zone 3 temperature 260℃, zone 4 temperature 260℃, zone 5 temperature 260℃, zone 6 temperature 250℃, zone 7 temperature 250℃, die head temperature 270℃, and rotation speed 300rpm / min. After being pulled and pelletized by the traction machine, nylon composite material is obtained.

[0126] The composite materials prepared in Examples 1-5 and Comparative Examples 1-3 were tested, and the results are shown in Table 9: Table 9

[0127]

[0128] As shown in Table 9, the antibacterial and light transmittance properties of the nylon composite material prepared by this invention meet the requirements. Examples 1-5 demonstrate that the addition of furan-based antibacterial agents can improve the antibacterial properties of the resin. Examples 3, 4, 5, Comparative Examples 1, 2, and 3 show that the addition of furan-based antibacterial agents results in composite materials with superior transparency.

[0129] In addition, the inventors of this case also conducted experiments with other raw materials, process operations, and process conditions described in this specification, referring to the aforementioned embodiments, and obtained relatively ideal results in all cases.

[0130] It should be understood that the technical solutions of the present invention are not limited to the specific embodiments described above. Any technical modifications made to the technical solutions of the present invention without departing from the spirit and scope of the claims are within the scope of protection of the present invention.

Claims

1. An antibacterial transparent nylon composite material, characterized in that, The raw materials for preparing the antibacterial transparent nylon composite material include the following components: nylon, furan antibacterial agent, antioxidant, lubricant and anti-yellowing agent; The furan antibacterial agent has a structure as shown in formula (I): ； Formula (I); R is selected from methyl or ethyl.

2. The antibacterial transparent nylon composite material according to claim 1, characterized in that, The raw materials for preparing the antibacterial transparent nylon composite material include the following components by weight percentage: nylon 15%~76%, furan antibacterial agent 0.5%-5%, antioxidant 0.1%-2%, lubricant 0.1%~5%, and anti-yellowing agent 0.1%~3%.

3. The antibacterial transparent nylon composite material according to claim 2, characterized in that, The raw materials for preparing the antibacterial transparent nylon composite material include the following components by weight percentage: nylon 45%~65%, furan antibacterial agent 0.5%~4%, antioxidant 0.1%~2%, lubricant 0.1%~5%, and anti-yellowing agent 0.5%~2%; And / or, the raw materials for preparing the antibacterial transparent nylon composite material include the following components by weight percentage: nylon 45%~65%, furan antibacterial agent 1%~5%, antioxidant 0.2%~2%, lubricant 0.1%~5%, and anti-yellowing agent 0.5%~3%; And / or, the raw materials for preparing the antibacterial transparent nylon composite material include the following components calculated by weight percentage: nylon 45%~65%, furan antibacterial agent 1%~5%, antioxidant 0.2%~2%, lubricant 0.1%~1% and anti-yellowing agent 0.5%~1%.

4. The antibacterial transparent nylon composite material according to claim 1, characterized in that: The nylon includes semi-aromatic transparent nylon; And / or, the antioxidant includes any one or more combinations of 1098, 1010, and 1076; And / or, the lubricant comprises any one or more combinations of E wax, aluminum stearate, and silicone; And / or, the anti-yellowing agent comprises any one or more combinations of tris(2,4-di-tert-butylphenyl) phosphite, di(2,2,6,6-tetramethyl-3-piperidinamido)-isophthalamide, and bis(2,4-dicumylphenyl)pentaerythritol diphosphite.

5. The method for preparing the antibacterial transparent nylon composite material according to any one of claims 1-4, characterized in that, include: Nylon, furan antibacterial agent, antioxidant, lubricant and anti-yellowing agent are uniformly mixed, and then the resulting mixture is added to a twin-screw extruder for granulation to obtain an antibacterial transparent nylon composite material.

6. The preparation method according to claim 5, characterized in that, Specifically, it includes: Nylon, furan antibacterial agent, antioxidant, lubricant and anti-yellowing agent are placed in a high-speed kneading device and stirred for 5-25 minutes at a speed of 100-500 rpm / min. And / or, the temperature parameters of each zone from the feed port to the die head of the twin-screw extruder include: zone 1 temperature 190-210℃, zone 2 temperature 260-270℃, zone 3 temperature 260-270℃, zone 4 temperature 260-270℃, zone 5 temperature 260-270℃, zone 6 temperature 245-250℃, zone 7 temperature 240-250℃, die head temperature 260-270℃, and rotation speed 300-450 rpm / min.

7. Use of the antibacterial transparent nylon composite material according to any one of claims 1-4 in the preparation of electronic and electrical housings or automotive interior and exterior trim.

8. A furan-based antibacterial agent, characterized in that, The furan-based antibacterial agent has the structure shown in formula (I): ； Formula (I); R is selected from methyl or ethyl.

9. The method for preparing the furan-based antibacterial agent as described in claim 8, characterized in that, include: A furan-based antibacterial agent is prepared by reacting a mixed reaction system containing 2,5-furandicarboxaldehyde, 2-aminoalkylamide, and a solvent in a protective atmosphere.

10. The preparation method according to claim 9, characterized in that: The 2-aminoalkylamide includes any one or more combinations of 2-aminopropionamide and 2-aminobutyramide; And / or, the solvent includes tetrahydrofuran and / or toluene.

Images