An antibacterial carpet prepared from sisal fibers and its preparation method

Abstract

The present invention relates to an antibacterial carpet prepared from sisal fibers and a preparation method thereof. The antibacterial carpet is sequentially provided with a bottom support layer, a first antibacterial functional layer, a second antibacterial functional layer, and a top support layer from bottom to top. By reasonably optimizing the composition ratio of each layer, the bottom support layer plays a role in absorbing the ground and preventing slipping, not mildewing, being resilient and deformable. The first antibacterial functional layer plays a role in antibacterial and preventing the connection between the bottom support layer and the functional layer from being insufficiently tight. The second antibacterial functional layer plays a role in antibacterial and preventing the antibacterial components from being melted and falling off due to being soaked by water. The top support layer plays a role in quickly absorbing water, moisture-proof, anti-slip, facilitating cleaning, and not leaving stains, perfectly solving the problems existing in the existing sisal carpets, such as not being suitable for water washing, poor elasticity, local swelling and hardening after a large amount of moisture absorption, easy color change under direct sunlight, and lack of antibacterial property.

Description

Technical Field

[0001] The present invention relates to the technical field of the preparation method of sisal fiber products, and particularly relates to an antibacterial carpet prepared from sisal fiber and a preparation method thereof. Background Art

[0002] Sisal (scientific name: Agave sisalana Perr. ex Engelm.) is also known as pineapple hemp and belongs to the genus Agave of the family Agavaceae. It is a perennial tropical hard-leaf fiber crop. It is native to Mexico and is now mainly planted in Africa, Latin America, Asia and other places. It is the most widely used hard fiber in the world today. Sisal fiber itself has good luster, tough texture, corrosion resistance, relatively large elasticity, strong tensile strength, and good resistance to salinity and friction. It is widely used in various industries such as transportation, fishery, petroleum, and metallurgy, and has important economic value. Sisal processed products mainly include sisal fiber, sisal yarn, sisal carpet, sisal polishing wheel, wire rope core, saponin, sisal wallpaper and other sisal products. Carpets are often used in modern home decoration and have the advantages of warmth retention, anti-slip, softness, sound absorption, etc. Carpets can be divided into many types according to different use materials, such as wool carpets, blended carpets, cotton thread carpets, etc., and sisal carpets are one of them. Sisal carpets are rich in sisal fiber, and sisal fiber has the function of absorbing and releasing moisture. Therefore, sisal carpets can absorb or release moisture according to the change of the environment, so as to achieve the effect of regulating the environment and air temperature. In addition, sisal carpets also have the advantages of energy saving, degradability, insect resistance, anti-static, good elasticity, sound absorption and heat insulation, wear resistance, etc., and the cost performance is very high.

[0003] At present, sisal carpets have the following defects: (1) They are not suitable for washing with water and can basically only be vacuumed with a vacuum cleaner. Daily cleaning is required. If not cleaned for a long time, it will lead to serious dirt accumulation, which will endanger human health; (2) Sisal fiber is relatively rigid and its elasticity is not as good as that of other materials. It cannot be placed on floors with height differences or floors with sharp protrusions; (3) After a large amount of moisture absorption, sisal carpets are prone to local bulging and hardening; (4) They are easily discolored when placed in direct sunlight; (5) They do not have antibacterial properties, etc. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide an antibacterial carpet prepared from sisal fiber and a preparation method thereof, which can be washed with water, has a certain elasticity, will not bulge and harden after a large amount of moisture absorption, is not easily discolored, has excellent antibacterial properties, and can be industrially produced.

[0005] The present invention is achieved through the following technical solutions:

[0006] An antibacterial carpet prepared from sisal fibers, wherein the antibacterial carpet is sequentially provided with a bottom support layer, a first antibacterial functional layer, a second antibacterial functional layer, and a top support layer from bottom to top;

[0007] The bottom support layer functions to absorb the ground and prevent slipping, not mildew, be resilient and deformable; the bottom support layer is composed of the following components in parts by weight: 100 - 120 parts of sisal fibers, 20 - 25 parts of cotton fibers, 10 - 15 parts of tea tree branch powder, 10 - 15 parts of talcum powder, and 18 - 22 parts of binder;

[0008] The first antibacterial functional layer functions to antibacterial and prevent the connection between the bottom support layer and the functional layer from being insufficiently tight; the first antibacterial functional layer is composed of the following components in parts by weight: 100 - 120 parts of sisal fibers, 30 - 35 parts of flax fibers, 10 - 15 parts of diatomite powder, 10 - 15 parts of expanded vermiculite powder, 1 - 2 parts of silver - loaded carbon nanotube antibacterial agent, and 8 - 10 parts of binder;

[0009] The second antibacterial functional layer functions to antibacterial and prevent the antibacterial components from melting and falling off due to being soaked by water; the second antibacterial functional layer is composed of the following components in parts by weight: 100 - 120 parts of sisal fibers, 30 - 35 parts of flax fibers, 10 - 15 parts of diatomite powder, 10 - 15 parts of expanded vermiculite powder, 5 - 8 parts of tourmaline powder, 5 - 8 parts of styrene - butadiene rubber powder, 1 - 2 parts of silver - loaded carbon nanotube antibacterial agent, and 12 - 15 parts of binder;

[0010] The top support layer functions to quickly absorb water, moisture - proof, anti - slip, easy to clean, and not leave stains; the top support layer is composed of the following components in parts by weight: 100 - 120 parts of sisal fibers, 35 - 40 parts of diatomite, 20 - 25 parts of coconut shell fibers, 0.5 - 0.8 parts of silver - loaded carbon nanotube antibacterial agent, and 10 - 14 parts of binder.

[0011] Further, the antibacterial carpet is sequentially provided with a bottom support layer, a first antibacterial functional layer, a second antibacterial functional layer, and a top support layer from bottom to top; the thickness of the bottom support layer is 5 - 8 mm, the thickness of the first antibacterial functional layer is 6 - 8 mm, the thickness of the second antibacterial functional layer is 8 - 10 mm, and the thickness of the top support layer is 4 - 6 mm.

[0012] Further, the bottom support layer functions to absorb the ground and prevent slipping, not mildew, be resilient and deformable; the bottom support layer is composed of the following components in parts by weight: 110 - 120 parts of sisal fibers, 22 - 25 parts of cotton fibers, 12 - 15 parts of tea tree branch powder, 13 - 15 parts of talcum powder, and 20 - 22 parts of binder.

[0013] Further, the first antibacterial functional layer is composed of the following components in parts by weight: 110-120 parts of sisal fiber, 32-35 parts of linen fiber, 12-15 parts of diatomite powder, 12-15 parts of expanded vermiculite powder, 1.5-2 parts of silver-loaded carbon nanotube antibacterial agent, and 9-10 parts of binder.

[0014] Further, the second antibacterial functional layer is composed of the following components in parts by weight: 110-120 parts of sisal fiber, 32-35 parts of linen fiber, 12-15 parts of diatomite powder, 12-15 parts of expanded vermiculite powder, 7-8 parts of tourmaline powder, 6-8 parts of styrene-butadiene rubber powder, 1.5-2 parts of silver-loaded carbon nanotube antibacterial agent, and 13-15 parts of binder.

[0015] Further, the top support layer is composed of the following components in parts by weight: 110-120 parts of sisal fiber, 37-40 parts of diatomite, 23-25 parts of coconut shell fiber, 0.6-0.8 parts of silver-loaded carbon nanotube antibacterial agent, and 13-14 parts of binder.

[0016] Further, the binder is a hot melt adhesive.

[0017] The present invention also provides a preparation method of an antibacterial carpet prepared from sisal fiber, comprising the following steps:

[0018] (1) Weighing: According to the weight ratio, weigh the components of the bottom support layer, the first antibacterial functional layer, the second antibacterial functional layer, and the top support layer respectively;

[0019] (2) Preparation of the mixture: Put the components of the bottom support layer into a mixer, stir evenly at 120°C - 160°C, and keep warm to obtain the bottom support layer mixture;

[0020] Put the components of the first antibacterial functional layer into a mixer, stir evenly at 120°C - 160°C, and keep warm to obtain the first antibacterial functional layer mixture;

[0021] Put the components of the second antibacterial functional layer into a mixer, stir evenly at 120°C - 160°C, and keep warm to obtain the second antibacterial functional layer mixture;

[0022] Put the components of the top support layer into a mixer, stir evenly at 120°C - 160°C, and keep warm to obtain the top support layer mixture;

[0023] (3) Injection molding in sequence: introducing the bottom support layer mixture into the mold to form a bottom support layer of a specific thickness, and letting it stand at room temperature for 3 to 4 minutes; then injecting the first antibacterial functional layer mixture into the mold to obtain a bottom support layer and a first antibacterial functional layer located directly above the bottom support layer, and letting it stand at room temperature for 3 to 4 minutes; then injecting the second antibacterial functional layer mixture into the mold, and letting it stand at room temperature for 3 to 4 minutes; finally, injecting the top support layer mixture into the mold, and letting it stand at room temperature for 3 to 4 minutes to obtain a preliminarily formed antibacterial carpet mixture;

[0024] (4) Freezing: Freezing the preliminarily formed antibacterial carpet mixture at -15°C to -10°C for 6 to 10 hours to obtain a frozen antibacterial carpet;

[0025] (5) Maintenance and drying: the freeze-formed antibacterial carpet is placed in an environment with a temperature of 14-16° C., a humidity of 75-85%, and a wind speed of 5-6 m / s for maintenance for 36-45 hours; taken out and dried to obtain the antibacterial carpet made of sisal fiber.

[0026] Furthermore, in the step (4), the preliminarily formed antibacterial carpet mixture is frozen at -13°C to -10°C for 8 to 10 hours to obtain a frozen antibacterial carpet.

[0027] Furthermore, in the step (5), the freeze-formed antibacterial carpet is placed in an environment with a temperature of 15-16° C., a humidity of 78-85%, and a wind speed of 5.5-6 m / s for maintenance for 40-45 hours; taken out and dried to obtain the antibacterial carpet made of sisal fiber.

[0028] The present invention discloses an antibacterial carpet made of sisal fiber and a preparation method thereof. The antibacterial carpet is sequentially provided with a bottom supporting layer, a first antibacterial functional layer, a second antibacterial functional layer and a top supporting layer from bottom to top; the composition ratio of each layer is rationally optimized, the bottom supporting layer has the functions of absorbing the ground, preventing slipping, preventing mildew, and being resilient and deformable, the first antibacterial functional layer has the functions of antibacterial and preventing the bottom supporting layer from being loosely connected to the functional layer, the second antibacterial functional layer has the functions of antibacterial and preventing the antibacterial component from being soaked in water and causing the antibacterial component to melt and fall off, and the top supporting layer has the functions of rapid water absorption, moisture resistance, anti-slip, easy cleaning and no stains, and perfectly solves the problems of existing sisal carpets such as being difficult to wash, poor elasticity, local swelling and hardening after absorbing a large amount of moisture, easy discoloration under direct sunlight and lack of antibacterial properties.

[0029] The antibacterial carpet made of sisal fiber and the preparation method thereof of the present invention have the following advantages:

[0030] (1) The produced antibacterial carpet can be washed with water, effectively solving the problem that traditional sisal carpets are not suitable for washing with water, and basically can only be cleaned by vacuuming with a vacuum cleaner. Daily cleaning is required, and if not cleaned for a long time, it will cause serious dirt accumulation, which will endanger human health.

[0031] (2) The produced antibacterial carpet has a certain elasticity, effectively solving the problem that traditional sisal carpets are relatively rigid, with worse elasticity than other materials, and cannot be placed on floors with height differences or floors with sharp protrusions.

[0032] (3) After the produced antibacterial carpet absorbs a large amount of moisture, it will not bulge or harden, effectively solving the problem that traditional sisal carpets are prone to local bulging and hardening after absorbing a large amount of moisture.

[0033] (4) The produced antibacterial carpet is not easily discolored, effectively solving the problem that traditional sisal carpets are easily discolored when placed in direct sunlight.

[0034] (5) The produced antibacterial carpet has excellent antibacterial properties, effectively solving the problem that traditional sisal carpets do not have antibacterial properties. Detailed implementation mode

[0035] The following embodiments can help those skilled in the art to understand the present invention more comprehensively, but cannot limit the present invention in any way.

[0036] An antibacterial carpet prepared from sisal fibers and its preparation method according to the present invention. The adhesive used in the following embodiments is a hot-melt adhesive, specifically a hot-melt adhesive composed of ethylene-vinyl acetate copolymer: rosin resin: hydrogenated rosin glyceride = 3:2:1 by weight. It should be noted that the role of the adhesive is to bond and assist in forming; specifically, an adhesive with a suitable price can be selected according to actual needs, and the protection scope of this application should not be limited thereby.

[0037] An antibacterial carpet prepared from sisal fibers and its preparation method according to the present invention. The antibacterial agent used is a silver-loaded carbon nanotube antibacterial agent, which can be purchased on the market; the antibacterial agent used can also be other types of silver ion antibacterial agents, as long as it can play an effective antibacterial role.

[0038] Example 1: Antibacterial carpet prepared from sisal fibers

[0039] An antibacterial carpet prepared from sisal fibers, the antibacterial carpet is sequentially provided with a bottom support layer, a first antibacterial functional layer, a second antibacterial functional layer, and a top support layer from bottom to top; the thickness of the bottom support layer is 5 mm, the thickness of the first antibacterial functional layer is 6 mm, the thickness of the second antibacterial functional layer is 8 mm, and the thickness of the top support layer is 4 mm.

[0040] The bottom support layer is composed of the following components by weight: 100 parts of sisal fiber, 20 parts of cotton fiber, 10 parts of tea tree branch powder, 10 parts of talcum powder, and 18 parts of binder;

[0041] The first antibacterial functional layer is composed of the following components by weight: 100 - 120 parts of sisal fiber, 30 - 35 parts of flax fiber, 10 - 15 parts of diatomite powder, 10 - 15 parts of expanded vermiculite powder, 1 - 2 parts of silver-loaded carbon nanotube antibacterial agent, and 8 - 10 parts of binder;

[0042] The second antibacterial functional layer is composed of the following components by weight: 100 parts of sisal fiber, 30 parts of flax fiber, 10 parts of diatomite powder, 10 parts of expanded vermiculite powder, 5 parts of tourmaline powder, 5 parts of styrene-butadiene rubber powder, 1 part of silver-loaded carbon nanotube antibacterial agent, and 12 parts of binder;

[0043] The top support layer is composed of the following components by weight: 100 parts of sisal fiber, 35 parts of diatomite, 20 parts of coconut shell fiber, 0.5 part of silver-loaded carbon nanotube antibacterial agent, and 10 parts of binder.

[0044] The preparation method of the antibacterial carpet prepared from the above sisal fiber includes the following steps:

[0045] (1) Weighing: According to the weight ratio, respectively weigh the components of the bottom support layer, the first antibacterial functional layer, the second antibacterial functional layer, and the top support layer; the weighing accuracy of each component is controlled at the milligram level;

[0046] (2) Preparation of the mixture: Put the components of the bottom support layer into a mixer, stir evenly at 120 °C, and keep warm to obtain the bottom support layer mixture;

[0047] Put the components of the first antibacterial functional layer into a mixer, stir evenly at 120 °C, and keep warm to obtain the first antibacterial functional layer mixture;

[0048] Put the components of the second antibacterial functional layer into a mixer, stir evenly at 120 °C, and keep warm to obtain the second antibacterial functional layer mixture;

[0049] Put the components of the top support layer into a mixer, stir evenly at 120 °C, and keep warm to obtain the top support layer mixture; the heat preservation time of each mixture should not be too long, and each mixture can be directly prepared when used;

[0050] (3) Injection molding in sequence: introduce the bottom support layer mixture into the mold to form a bottom support layer of a specific thickness, and let it stand at room temperature for 3 minutes; then inject the first antibacterial functional layer mixture into the mold to obtain a bottom support layer and a first antibacterial functional layer located directly above the bottom support layer, and let it stand at room temperature for 3 minutes; then inject the second antibacterial functional layer mixture into the mold, let it stand at room temperature for 3 minutes, and finally inject the top support layer mixture into the mold, let it stand at room temperature for 3 minutes to obtain a preliminarily formed antibacterial carpet mixture; the thickness of each layer must be well controlled during the injection molding process. In practice, the thickness of each layer can be strictly controlled based on the relationship between layer thickness and layer weight;

[0051] (4) Freezing: placing the preliminarily formed antibacterial carpet mixture into a freezer and freezing it at -15°C for 6 hours to obtain a frozen antibacterial carpet;

[0052] (5) Maintenance and drying: The freeze-formed antibacterial carpet is taken out of the freezer and placed in a curing room at a temperature of 14° C., a humidity of 75%, and a wind speed of 5 m / s for maintenance for 36 hours; the antibacterial carpet is taken out and water droplets on the surface of the antibacterial carpet are wiped off with an absorbent cloth, and then naturally dried at room temperature to obtain the antibacterial carpet made of sisal fiber.

[0053] Example 2: Antibacterial carpet made from sisal fiber

[0054] An antibacterial carpet made of sisal fiber, the antibacterial carpet comprising, from bottom to top, a bottom support layer, a first antibacterial functional layer, a second antibacterial functional layer, and a top support layer; the bottom support layer is 8 mm thick, the first antibacterial functional layer is 8 mm thick, the second antibacterial functional layer is 10 mm thick, and the top support layer is 6 mm thick;

[0055] The bottom support layer is composed of the following components in parts by weight: 120 parts of sisal fiber, 25 parts of cotton fiber, 15 parts of tea branch powder, 15 parts of talc powder, and 22 parts of adhesive;

[0056] The first antibacterial functional layer is composed of the following components in parts by weight: 120 parts of sisal fiber, 35 parts of flax fiber, 15 parts of diatomaceous earth powder, 15 parts of expanded vermiculite powder, 2 parts of silver-loaded carbon nanotube antibacterial agent, and 10 parts of adhesive;

[0057] The second antibacterial functional layer is composed of the following components in parts by weight: 120 parts of sisal fiber, 35 parts of flax fiber, 15 parts of diatomaceous earth powder, 15 parts of expanded vermiculite powder, 8 parts of tourmaline powder, 8 parts of styrene-butadiene rubber powder, 2 parts of silver-loaded carbon nanotube antibacterial agent, and 15 parts of adhesive;

[0058] The top support layer is composed of the following components in parts by weight: 120 parts of sisal fiber, 40 parts of diatomite, 25 parts of coconut shell fiber, 0.8 part of silver-loaded carbon nanotube antibacterial agent, and 14 parts of binder.

[0059] The preparation method of the antibacterial carpet prepared from the above sisal fiber includes the following steps:

[0060] (1) Weighing: According to the weight ratio, respectively weigh the components of the bottom support layer, the first antibacterial functional layer, the second antibacterial functional layer, and the top support layer; the weighing accuracy of each component is controlled at the milligram level;

[0061] (2) Preparation of the mixture: Put the components of the bottom support layer into a mixer, stir evenly at 160 °C, and keep warm to obtain the bottom support layer mixture;

[0062] Put the components of the first antibacterial functional layer into a mixer, stir evenly at 160 °C, and keep warm to obtain the first antibacterial functional layer mixture;

[0063] Put the components of the second antibacterial functional layer into a mixer, stir evenly at 160 °C, and keep warm to obtain the second antibacterial functional layer mixture;

[0064] Put the components of the top support layer into a mixer, stir evenly at 160 °C, and keep warm to obtain the top support layer mixture; the heat preservation time of each mixture should not be too long, and each mixture can be directly prepared when used;

[0065] (3) Sequential injection molding: Introduce the bottom support layer mixture into the mold to form a bottom support layer with a specific thickness, and let it stand at room temperature for 4 min; then inject the first antibacterial functional layer mixture into the mold to obtain the bottom support layer and the first antibacterial functional layer directly above the bottom support layer, and let it stand at room temperature for 4 min; then inject the second antibacterial functional layer mixture into the mold, let it stand at room temperature for 4 min, and finally inject the top support layer mixture into the mold, let it stand at room temperature for 4 min to obtain the preliminarily formed antibacterial carpet mixture; the thickness of each layer should be well controlled during the injection molding process, and the thickness of each layer can be strictly controlled according to the relationship between the layer thickness and the layer weight in practice;

[0066] (4) Freezing: Put the preliminarily formed antibacterial carpet mixture into the freezer and freeze it at -10 °C for 10 h to obtain the freeze-formed antibacterial carpet;

[0067] (5) Maintenance and drying: Take out the freeze-formed antibacterial carpet from the freezer, and then place it in a maintenance room at a temperature of 16 °C, a humidity of 85%, and a wind speed of 6 m / s for 45 h; take it out, wipe off the water droplets on the surface of the antibacterial carpet with a water-absorbing cloth, and then dry it naturally at room temperature to obtain the antibacterial carpet prepared from sisal fiber.

[0068] Example 3: Antibacterial carpet made from sisal fiber

[0069] An antibacterial carpet made of sisal fiber, the antibacterial carpet comprising, from bottom to top, a bottom support layer, a first antibacterial functional layer, a second antibacterial functional layer, and a top support layer; the bottom support layer is 6 mm thick, the first antibacterial functional layer is 7 mm thick, the second antibacterial functional layer is 9 mm thick, and the top support layer is 5 mm thick;

[0070] The bottom support layer is composed of the following components in parts by weight: 110 parts of sisal fiber, 22 parts of cotton fiber, 12 parts of tea branch powder, 13 parts of talc powder, and 20 parts of adhesive;

[0071] The first antibacterial functional layer is composed of the following components in parts by weight: 110 parts of sisal fiber, 32 parts of flax fiber, 12 parts of diatomaceous earth powder, 12 parts of expanded vermiculite powder, 1.5 parts of silver-loaded carbon nanotube antibacterial agent, and 9 parts of adhesive;

[0072] The second antibacterial functional layer is composed of the following components in parts by weight: 110 parts of sisal fiber, 32 parts of flax fiber, 12 parts of diatomaceous earth powder, 12 parts of expanded vermiculite powder, 7 parts of tourmaline powder, 6 parts of styrene-butadiene rubber powder, 1.5 parts of silver-loaded carbon nanotube antibacterial agent, and 13 parts of adhesive;

[0073] The top supporting layer is composed of the following components in parts by weight: 110 parts of sisal fiber, 37 parts of diatomaceous earth, 23 parts of coconut shell fiber, 0.6 parts of silver-loaded carbon nanotube antibacterial agent, and 13 parts of adhesive.

[0074] The method for preparing the antibacterial carpet made of the sisal fiber comprises the following steps:

[0075] (1) Weighing: Weigh the components of the bottom support layer, the first antibacterial functional layer, the second antibacterial functional layer, and the top support layer respectively according to the weight ratio; the weighing accuracy of each component is controlled at the milligram level;

[0076] (2) Preparation of the mixture: Place the components constituting the bottom support layer into a blender, stir uniformly at 140° C., and keep the mixture warm to obtain the bottom support layer mixture;

[0077] The components constituting the first antibacterial functional layer are placed in a blender, stirred uniformly at 140° C., and kept warm to obtain a first antibacterial functional layer mixture;

[0078] The components constituting the second antibacterial functional layer are placed in a blender, stirred uniformly at 140° C., and kept warm to obtain a second antibacterial functional layer mixture;

[0079] Put the components that make up the top support layer into a blender, stir evenly at 140°C, and keep warm to obtain the top support layer mixture; the heat preservation time of each mixture should not be too long, and it can be directly prepared when using each mixture;

[0080] (3) Inject the mold in sequence: Introduce the bottom support layer mixture into the mold to form a bottom support layer with a specific thickness, and let it stand at room temperature for 3.5 minutes; then inject the first antibacterial functional layer mixture into the mold to obtain a bottom support layer and a first antibacterial functional layer directly above the bottom support layer, and let it stand at room temperature for 3.5 minutes; then inject the second antibacterial functional layer mixture into the mold, let it stand at room temperature for 3.5 minutes, and finally inject the top support layer mixture into the mold, let it stand at room temperature for 3.5 minutes to obtain the preliminarily formed antibacterial carpet mixture; the thickness of each layer should be well controlled during the injection molding process. In practice, the thickness of each layer can be strictly controlled according to the relationship between layer thickness and layer weight;

[0081] (4) Freeze: Put the preliminarily formed antibacterial carpet mixture into the freezer and freeze it at -13°C for 8 hours to obtain a freeze-molded antibacterial carpet;

[0082] (5) Maintenance and drying: Take out the freeze-molded antibacterial carpet from the freezer, and then place it in a maintenance room at a temperature of 15°C, a humidity of 78%, and a wind speed of 5.5 m / s for 40 hours; take it out, wipe off the water droplets on the surface of the antibacterial carpet with a water-absorbing cloth, and then dry it naturally at room temperature to obtain the antibacterial carpet prepared from sisal fiber.

[0083] Comparative Example 1

[0084] An antibacterial carpet prepared from sisal fiber, the antibacterial carpet is sequentially provided with a bottom support layer, a second antibacterial functional layer, and a top support layer from bottom to top; the thickness of the bottom support layer is 6 mm, the thickness of the second antibacterial functional layer is 16 mm, and the thickness of the top support layer is 5 mm;

[0085] The bottom support layer is composed of the following components in parts by weight: 110 parts of sisal fiber, 22 parts of cotton fiber, 12 parts of tea tree branch powder, 13 parts of talc powder, and 20 parts of binder;

[0086] The second antibacterial functional layer is composed of the following components in parts by weight: 110 parts of sisal fiber, 32 parts of flax fiber, 12 parts of diatomite powder, 12 parts of expanded vermiculite powder, 7 parts of tourmaline powder, 6 parts of styrene-butadiene rubber powder, 1.5 parts of silver-loaded carbon nanotube antibacterial agent, and 13 parts of binder;

[0087] The top support layer is composed of the following components in parts by weight: 110 parts of sisal fiber, 37 parts of diatomite, 23 parts of coconut shell fiber, 0.6 part of silver-loaded carbon nanotube antibacterial agent, and 13 parts of binder.

[0088] The preparation method of the antibacterial carpet prepared from the above sisal fiber comprises the following steps:

[0089] (1) Weighing: According to the weight ratio, weigh the components of the bottom support layer, the second antibacterial functional layer, and the top support layer respectively; the weighing accuracy of each component is controlled at the milligram level.

[0090] (2) Preparation of the mixture: Put the components of the bottom support layer into a mixer, stir evenly at 140 °C, and keep warm to obtain the bottom support layer mixture.

[0091] Put the components of the second antibacterial functional layer into a mixer, stir evenly at 140 °C, and keep warm to obtain the second antibacterial functional layer mixture.

[0092] Put the components of the top support layer into a mixer, stir evenly at 140 °C, and keep warm to obtain the top support layer mixture; the heat preservation time of each mixture should not be too long, and each mixture can be directly prepared when used.

[0093] (3) Sequential injection molding: Introduce the bottom support layer mixture into the mold to form a bottom support layer with a specific thickness, and let it stand at room temperature for 3.5 min; then inject the second antibacterial functional layer mixture into the mold, let it stand at room temperature for 3.5 min, and finally inject the top support layer mixture into the mold, let it stand at room temperature for 3.5 min to obtain the preliminarily formed antibacterial carpet mixture; the thickness of each layer should be well controlled during the injection molding process, and the thickness of each layer can be strictly controlled according to the relationship between the layer thickness and the layer weight.

[0094] (4) Freezing: Put the preliminarily formed antibacterial carpet mixture into the freezer and freeze it at -13 °C for 8 h to obtain the freeze-formed antibacterial carpet.

[0095] (5) Maintenance and drying: Take out the freeze-formed antibacterial carpet from the freezer, and then place it in a maintenance room with a temperature of 15 °C, a humidity of 78%, and a wind speed of 5.5 m / s for 40 h; take it out, wipe off the water droplets on the surface of the antibacterial carpet with a water-absorbing cloth, and then dry it naturally at room temperature to obtain the antibacterial carpet prepared from sisal fiber.

[0096] Comparative Example 2

[0097] An antibacterial carpet prepared from sisal fiber, the antibacterial carpet is sequentially provided with a bottom support layer, a first antibacterial functional layer, and a top support layer from bottom to top; the thickness of the bottom support layer is 6 mm, the thickness of the first antibacterial functional layer is 16 mm, and the thickness of the top support layer is 5 mm.

[0098] The bottom support layer is composed of the following components in parts by weight: 110 parts of sisal fiber, 22 parts of cotton fiber, 12 parts of tea tree branch powder, 13 parts of talcum powder, and 20 parts of binder;

[0099] The first antibacterial functional layer is composed of the following components in parts by weight: 110 parts of sisal fiber, 32 parts of flax fiber, 12 parts of diatomite powder, 12 parts of expanded vermiculite powder, 1.5 parts of silver-loaded carbon nanotube antibacterial agent, and 9 parts of binder;

[0100] The top support layer is composed of the following components in parts by weight: 110 parts of sisal fiber, 37 parts of diatomite, 23 parts of coconut shell fiber, 0.6 part of silver-loaded carbon nanotube antibacterial agent, and 13 parts of binder.

[0101] The preparation method of the antibacterial carpet prepared from the above sisal fiber includes the following steps:

[0102] (1) Weighing: According to the weight ratio, respectively weigh the components of the bottom support layer, the first antibacterial functional layer, and the top support layer; the weighing accuracy of each component is controlled at the milligram level;

[0103] (2) Preparation of the mixture: Put the components of the bottom support layer into a mixer, stir evenly at 140 °C, and keep warm to obtain the bottom support layer mixture;

[0104] Put the components of the first antibacterial functional layer into a mixer, stir evenly at 140 °C, and keep warm to obtain the first antibacterial functional layer mixture;

[0105] Put the components of the top support layer into a mixer, stir evenly at 140 °C, and keep warm to obtain the top support layer mixture; the heat preservation time of each mixture should not be too long, and each mixture can be directly prepared when used;

[0106] (3) Sequential injection molding: Introduce the bottom support layer mixture into the mold to form a bottom support layer with a specific thickness, and let it stand at room temperature for 3.5 min; then inject the first antibacterial functional layer mixture into the mold to obtain the bottom support layer and the first antibacterial functional layer directly above the bottom support layer, and let it stand at room temperature for 3.5 min; finally, inject the top support layer mixture into the mold and let it stand at room temperature for 3.5 min to obtain the preliminarily formed antibacterial carpet mixture; the thickness of each layer should be well controlled during the injection molding process, and the thickness of each layer can be strictly controlled according to the relationship between the layer thickness and the layer weight;

[0107] (4) Freezing: Put the preliminarily formed antibacterial carpet mixture into the freezer and freeze it at -13 °C for 8 h to obtain the freeze-formed antibacterial carpet;

[0108] (5) Maintenance and drying: The freeze-formed antibacterial carpet is taken out from the freezer and placed in a curing room at a temperature of 15° C., a humidity of 78%, and a wind speed of 5.5 m / s for maintenance for 40 hours; the antibacterial carpet is taken out and water droplets on the surface of the antibacterial carpet are wiped off with an absorbent cloth, and then naturally dried at room temperature to obtain the antibacterial carpet made of sisal fiber.

[0109] Comparative Example 3

[0110] An antibacterial carpet made of sisal fiber, the antibacterial carpet is provided with a bottom support layer, a first antibacterial functional layer, and a second antibacterial functional layer in order from bottom to top; the bottom support layer is 6 mm thick, the first antibacterial functional layer is 7 mm thick, and the second antibacterial functional layer is 14 mm thick;

[0111] The bottom support layer is composed of the following components in parts by weight: 110 parts of sisal fiber, 22 parts of cotton fiber, 12 parts of tea branch powder, 13 parts of talc powder, and 20 parts of adhesive;

[0112] The first antibacterial functional layer is composed of the following components in parts by weight: 110 parts of sisal fiber, 32 parts of flax fiber, 12 parts of diatomaceous earth powder, 12 parts of expanded vermiculite powder, 1.5 parts of silver-loaded carbon nanotube antibacterial agent, and 9 parts of adhesive;

[0113] The second antibacterial functional layer is composed of the following components in parts by weight: 110 parts of sisal fiber, 32 parts of flax fiber, 12 parts of diatomaceous earth powder, 12 parts of expanded vermiculite powder, 7 parts of tourmaline powder, 6 parts of styrene-butadiene rubber powder, 1.5 parts of silver-loaded carbon nanotube antibacterial agent, and 13 parts of adhesive.

[0114] The method for preparing the antibacterial carpet made of the sisal fiber comprises the following steps:

[0115] (1) Weighing: Weigh the components of the bottom support layer, the first antibacterial functional layer, and the second antibacterial functional layer respectively according to the weight ratio; the weighing accuracy of each component is controlled at the milligram level;

[0116] (2) Preparation of the mixture: Place the components constituting the bottom support layer into a blender, stir uniformly at 140° C., and keep the mixture warm to obtain the bottom support layer mixture;

[0117] The components constituting the first antibacterial functional layer are placed in a blender, stirred uniformly at 140° C., and kept warm to obtain a first antibacterial functional layer mixture;

[0118] The components constituting the second antibacterial functional layer are placed in a blender, stirred uniformly at 140° C., and kept warm to obtain a second antibacterial functional layer mixture;

[0119] (3) Injection molding in sequence: introduce the bottom support layer mixture into the mold to form a bottom support layer of a specific thickness, and let it stand at room temperature for 3.5 minutes; then inject the first antibacterial functional layer mixture into the mold to obtain a bottom support layer and the first antibacterial functional layer located directly above the bottom support layer, and let it stand at room temperature for 3.5 minutes; then inject the second antibacterial functional layer mixture into the mold, and let it stand at room temperature for 3.5 minutes to obtain a preliminarily formed antibacterial carpet mixture; the thickness of each layer must be well controlled during the injection molding process. In practice, the thickness of each layer can be strictly controlled based on the relationship between layer thickness and layer weight;

[0120] (4) Freezing: placing the preliminarily formed antibacterial carpet mixture into a freezer and freezing it at -13°C for 8 hours to obtain a frozen antibacterial carpet;

[0121] (5) Maintenance and drying: The freeze-formed antibacterial carpet is taken out from the freezer and placed in a curing room at a temperature of 15° C., a humidity of 78%, and a wind speed of 5.5 m / s for maintenance for 40 hours; the antibacterial carpet is taken out and water droplets on the surface of the antibacterial carpet are wiped off with an absorbent cloth, and then naturally dried at room temperature to obtain the antibacterial carpet made of sisal fiber.

[0122] Comparative Example 4

[0123] An antibacterial carpet made of sisal fiber, the antibacterial carpet comprising, from bottom to top, a bottom support layer, a first antibacterial functional layer, a second antibacterial functional layer, and a top support layer; the bottom support layer is 6 mm thick, the first antibacterial functional layer is 7 mm thick, the second antibacterial functional layer is 9 mm thick, and the top support layer is 5 mm thick;

[0124] The bottom support layer is composed of the following components in parts by weight: 110 parts of sisal fiber, 22 parts of cotton fiber, 12 parts of tea branch powder, 13 parts of talc powder, and 20 parts of adhesive;

[0125] The first antibacterial functional layer is composed of the following components in parts by weight: 110 parts of sisal fiber, 32 parts of flax fiber, 12 parts of diatomaceous earth powder, 12 parts of expanded vermiculite powder, 1.5 parts of silver-loaded carbon nanotube antibacterial agent, and 9 parts of adhesive;

[0126] The second antibacterial functional layer is composed of the following components in parts by weight: 110 parts of sisal fiber, 32 parts of flax fiber, 12 parts of diatomaceous earth powder, 12 parts of expanded vermiculite powder, 7 parts of tourmaline powder, 6 parts of styrene-butadiene rubber powder, 1.5 parts of silver-loaded carbon nanotube antibacterial agent, and 13 parts of adhesive;

[0127] The top supporting layer is composed of the following components in parts by weight: 110 parts of sisal fiber, 37 parts of diatomaceous earth, 23 parts of coconut shell fiber, 0.6 parts of silver-loaded carbon nanotube antibacterial agent, and 13 parts of adhesive.

[0128] The preparation method of the antibacterial carpet prepared from the above sisal fiber includes the following steps:

[0129] (1) Weighing: According to the weight ratio, respectively weigh the components of the bottom support layer, the first antibacterial functional layer, the second antibacterial functional layer, and the top support layer; the weighing accuracy of each component is controlled at the milligram level;

[0130] (2) Preparation of the mixture: Put the components of the bottom support layer into a mixer, stir evenly at 140 °C, and keep warm to obtain the bottom support layer mixture;

[0131] Put the components of the first antibacterial functional layer into a mixer, stir evenly at 140 °C, and keep warm to obtain the first antibacterial functional layer mixture;

[0132] Put the components of the second antibacterial functional layer into a mixer, stir evenly at 140 °C, and keep warm to obtain the second antibacterial functional layer mixture;

[0133] Put the components of the top support layer into a mixer, stir evenly at 140 °C, and keep warm to obtain the top support layer mixture; the heat preservation time of each mixture should not be too long, and each mixture can be directly prepared when used;

[0134] (3) Injection molding in sequence: Introduce the bottom support layer mixture into the mold to form a bottom support layer with a specific thickness, and let it stand at room temperature for 3.5 min; then inject the first antibacterial functional layer mixture into the mold to obtain the bottom support layer and the first antibacterial functional layer directly above the bottom support layer, and let it stand at room temperature for 3.5 min; then inject the second antibacterial functional layer mixture into the mold, let it stand at room temperature for 3.5 min, and finally inject the top support layer mixture into the mold, let it stand at room temperature for 3.5 min to obtain the preliminarily formed antibacterial carpet mixture; the thickness of each layer should be well controlled during the injection molding process, and the thickness of each layer can be strictly controlled according to the relationship between the layer thickness and the layer weight;

[0135] (4) Freezing: Put the preliminarily formed antibacterial carpet mixture into the freezer and freeze it at -13 °C for 8 h to obtain the freeze-molded antibacterial carpet;

[0136] (5) Drying: Take out the freeze-molded antibacterial carpet from the freezer, wipe off the water droplets on the surface of the antibacterial carpet with a water-absorbing cloth, and then naturally dry it at room temperature to obtain the antibacterial carpet prepared from the sisal fiber.

[0137] The following Table 1 shows the performance measurement results of the antibacterial carpets prepared from sisal fiber in Examples 1-3 and Comparative Examples 1-4.

[0138] Table 1

[0139]

[0140] In Table 1 above, the method for determining the tightness of the connection between the bottom support layer and the functional layer is as follows: Put the antibacterial carpet into a washing machine and spin-dry it with a conventional cleaning agent 10 times, and observe whether there are cracks at the connection between the bottom support layer and the functional layer, so as to determine the tightness of the connection between the bottom support layer and the functional layer.

[0141] The antibacterial carpet prepared in Example 1 was compared with the commercially available carpets with a rubber pad at the bottom and sisal fiber pads at the top, and pure sisal fiber pads. The results are shown in Table 2 below:

[0142] Table 2

[0143]

[0144]

[0145] As can be seen from Table 2 above, although the commercially available sisal fiber pad with a rubber pad at the bottom has a certain elasticity, its bottom is a rubber pad, and it absorbs heat seriously under conditions such as direct sunlight, and it cannot keep the surface of the floor mat cool, so the use effect is not good; the sisal fiber pad produced in this application combines many beneficial effects of rubber pads and sisal fiber pads, and the various properties of the produced floor mat are very excellent.

[0146] From the performance measurement results of the above antibacterial carpet, it can be seen that for an antibacterial carpet prepared from sisal fiber and its preparation method according to the present invention, the antibacterial carpet is sequentially provided with a bottom support layer, a first antibacterial functional layer, a second antibacterial functional layer, and a top support layer from bottom to top; the composition ratios of each layer are reasonably optimized. The bottom support layer plays a role in absorbing the ground and preventing slipping, not mildewing, being able to rebound and deform. The first antibacterial functional layer plays a role in antibacterial and preventing the connection between the bottom support layer and the functional layer from being insufficiently tight. The second antibacterial functional layer plays a role in antibacterial and preventing the antibacterial components from being melted and falling off due to being soaked by water. The top support layer plays a role in quickly absorbing water, moisture-proof, anti-slip, easy to clean, and leaving no stains, perfectly solving the problems existing in the existing sisal carpets, such as being not suitable for washing, having poor elasticity, bulging and hardening locally after a large amount of moisture absorption, being easy to change color under direct sunlight, and not having antibacterial properties; it can combine many beneficial effects of rubber pads and sisal fiber pads, and the various properties of the produced floor mat are very excellent.

[0147] Although the present invention has been described in detail above with general descriptions and specific embodiments, based on the present invention, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection required by the present invention.

Claims

1. An antibacterial carpet prepared from sisal fibers, characterized in that, The antibacterial carpet is sequentially provided with a bottom support layer, a first antibacterial functional layer, a second antibacterial functional layer, and a top support layer from bottom to top; The bottom support layer functions to absorb the ground and prevent slipping, not mildew, be resilient and deformable; the bottom support layer is composed of the following components in parts by weight: 100-120 parts of sisal fiber, 20-25 parts of cotton fiber, 10-15 parts of tea tree branch powder, 10-15 parts of talcum powder, and 18-22 parts of binder; The first antibacterial functional layer functions to antibacterial and prevent the connection between the bottom support layer and the first antibacterial functional layer from being insufficiently tight; the first antibacterial functional layer is composed of the following components in parts by weight: 100-120 parts of sisal fiber, 30-35 parts of flax fiber, 10-15 parts of diatomite powder, 10-15 parts of expanded vermiculite powder, 1-2 parts of silver-loaded carbon nanotube antibacterial agent, and 8-10 parts of binder; The second antibacterial functional layer functions to antibacterial and prevent the antibacterial components from melting and falling off due to being soaked by water; the second antibacterial functional layer is composed of the following components in parts by weight: 100-120 parts of sisal fiber, 30-35 parts of flax fiber, 10-15 parts of diatomite powder, 10-15 parts of expanded vermiculite powder, 5-8 parts of tourmaline powder, 5-8 parts of styrene-butadiene rubber powder, 1-2 parts of silver-loaded carbon nanotube antibacterial agent, and 12-15 parts of binder; The top support layer functions to quickly absorb water, prevent moisture, prevent slipping, be easy to clean, and not leave stains; the top support layer is composed of the following components in parts by weight: 100-120 parts of sisal fiber, 35-40 parts of diatomite, 20-25 parts of coconut shell fiber, 0.5-0.8 parts of silver-loaded carbon nanotube antibacterial agent, and 10-14 parts of binder.

2. The antibacterial carpet prepared from sisal fibers according to claim 1, wherein The antibacterial carpet is sequentially provided with a bottom support layer, a first antibacterial functional layer, a second antibacterial functional layer, and a top support layer from bottom to top; the thickness of the bottom support layer is 5-8 mm, the thickness of the first antibacterial functional layer is 6-8 mm, the thickness of the second antibacterial functional layer is 8-10 mm, and the thickness of the top support layer is 4-6 mm.

3. The antibacterial carpet prepared from sisal fiber according to claim 1, characterized in that, The bottom support layer functions to absorb the ground and prevent slipping, not mildew, be resilient and deformable; the bottom support layer is composed of the following components in parts by weight: 110-120 parts of sisal fiber, 22-25 parts of cotton fiber, 12-15 parts of tea tree branch powder, 13-15 parts of talcum powder, and 20-22 parts of binder.

4. The antibacterial carpet prepared from sisal fibers according to claim 1, wherein, The first antibacterial functional layer is composed of the following components in parts by weight: 110-120 parts of sisal fiber, 32-35 parts of flax fiber, 12-15 parts of diatomite powder, 12-15 parts of expanded vermiculite powder, 1.5-2 parts of silver-loaded carbon nanotube antibacterial agent, and 9-10 parts of binder.

5. The antibacterial carpet prepared from sisal fibers according to claim 1, characterized in that, The second antibacterial functional layer is composed of the following components in parts by weight: 110-120 parts of sisal fiber, 32-35 parts of flax fiber, 12-15 parts of diatomite powder, 12-15 parts of expanded vermiculite powder, 7-8 parts of tourmaline powder, 6-8 parts of styrene-butadiene rubber powder, 1.5-2 parts of silver-loaded carbon nanotube antibacterial agent, and 13-15 parts of binder.

6. The antibacterial carpet prepared from sisal fiber according to claim 1, characterized in that, The top support layer is composed of the following components in parts by weight: 110-120 parts of sisal fiber, 37-40 parts of diatomite, 23-25 parts of coconut shell fiber, 0.6-0.8 part of silver-loaded carbon nanotube antibacterial agent, and 13-14 parts of binder.

7. An antibacterial carpet prepared from sisal fibers according to claim 1, characterized in that, The binder is a hot melt adhesive.

8. The preparation method of an antibacterial carpet made of sisal fiber according to any one of claims 1 to 7, characterized in that, It includes the following steps: (1) Weighing: According to the weight ratio, weigh the components of the bottom support layer, the first antibacterial functional layer, the second antibacterial functional layer, and the top support layer respectively; (2) Preparation of the mixture: Put the components of the bottom support layer into a mixer, stir evenly at 120°C - 160°C, and keep warm to obtain the bottom support layer mixture; Put the components of the first antibacterial functional layer into a mixer, stir evenly at 120°C - 160°C, and keep warm to obtain the first antibacterial functional layer mixture; Put the components of the second antibacterial functional layer into a mixer, stir evenly at 120°C - 160°C, and keep warm to obtain the second antibacterial functional layer mixture; Put the components of the top support layer into a mixer, stir evenly at 120°C - 160°C, and keep warm to obtain the top support layer mixture; (3) Injecting into the mold in sequence: Introduce the bottom support layer mixture into the mold to form a bottom support layer with a specific thickness, and let it stand at room temperature for 3 - 4 minutes; then inject the first antibacterial functional layer mixture into the mold to obtain the bottom support layer and the first antibacterial functional layer directly above the bottom support layer, and let it stand at room temperature for 3 - 4 minutes; then inject the second antibacterial functional layer mixture into the mold, let it stand at room temperature for 3 - 4 minutes, and finally inject the top support layer mixture into the mold and let it stand at room temperature for 3 - 4 minutes to obtain the preliminarily formed antibacterial carpet mixture; (4) Freezing: Freeze the preliminarily formed antibacterial carpet mixture at -15°C - -10°C for 6 - 10 hours to obtain the freeze - formed antibacterial carpet; (5) Maintenance and drying: Place the freeze - formed antibacterial carpet in an environment with a temperature of 14 - 16°C, a humidity of 75 - 85%, and a wind speed of 5 - 6 m / s for 36 - 45 hours; take it out and dry it to obtain the antibacterial carpet prepared from sisal fiber.

9. The preparation method of an antibacterial carpet made of sisal fiber according to claim 8, characterized in that, In step (4), the preliminarily formed antibacterial carpet mixture is frozen at -13°C - -10°C for 8 - 10 hours to obtain the freeze - formed antibacterial carpet.

10. The preparation method of an antibacterial carpet made of sisal fiber according to claim 8, characterized in that, In step (5), the freeze - formed antibacterial carpet is placed in an environment with a temperature of 15 - 16°C, a humidity of 78 - 85%, and a wind speed of 5.5 - 6 m / s for 40 - 45 hours; take it out and dry it to obtain the antibacterial carpet prepared from sisal fiber.

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