CN116180297A - Preparation process and application of antibacterial flame-retardant high-strength composite carpet base cloth - Google Patents

Abstract

The invention belongs to the field of composite carpet base fabric preparation, and specifically discloses a preparation process and application of an antibacterial and flame-retardant high-strength composite carpet base fabric. The carpet base fabric (100) is made of flame-retardant polyester fiber, bio-based fiber and metal The warps of the flame-retardant polyester fibers constitute the warps (110), the metal wires constitute the wefts (120), and the bio-based fibers constitute oblique threads (130); the bio-based fibers are prepared by the following steps Formation: During the spinning process, the bio-based fiber is cooled to a slightly molten state, and then several layers of nano-silver ions are evenly sprayed on the surface of the bio-based fiber to adhere to the surface of the bio-based fiber, and then cooled to room temperature to obtain the described Bio-based fiber; calculated in parts by mass, the bio-based fiber contains 100 parts of PLA, 15-20 parts of polyhydroxyalkanoate, 5-10 parts of lignin; 5-15 parts of the nano-silver ion; The carpet base cloth of the invention has high strength, good antibacterial and flame retardant effect, and is environmentally friendly.

Description

Preparation process and application of an antibacterial and flame-retardant high-strength composite carpet base fabric

technical field

The invention belongs to the field of composite carpet base cloth preparation, and specifically discloses a preparation process and application of an antibacterial, flame-retardant, high-strength composite carpet base cloth.

Background technique

Carpet is a floor covering made of cotton, linen, wool, silk, grass yarn and other natural fibers or chemical synthetic fiber materials, which are braided, tufted or woven by hand or mechanically. It is one of the arts and crafts categories with a long history and tradition in the world. Covering the ground of residences, hotels, hotels, conference rooms, entertainment venues, gymnasiums, exhibition halls, vehicles, ships, aircraft, etc., it can reduce noise, heat insulation and decoration effects to improve foot feel, prevent slipping, and prevent air pollution. The internal use area of the house is the kitchen, bedroom, bedside, coffee table sofa, bathroom, and living room. The common fiber raw materials for carpet yarn are divided into three types: natural fiber, chemical fiber and blended. Among them, natural fibers include wool, silk, cotton and jute, etc.; chemical fibers include viscose staple fiber, nylon B CF filament and staple fiber, acrylic staple fiber, polypropylene B CF filament and staple fiber, and polyester staple fiber; /Nylon, Wool/Viscose, Wool/Acrylic, Wool/Polyester and Wool/Jute etc. Chemical fiber (synthetic fiber) carpets are made of chemical fibers such as nylon fiber (nylon), polypropylene fiber (polypropylene fiber), polyacrylonitrile fiber (acrylic fiber), polyester fiber (polyester), stereotyped silk, and PTT. Its biggest feature is its strong wear resistance, and at the same time overcomes the shortcomings of pure wool carpets that are easy to corrode and mildew; however, its flame retardancy and antistatic property are relatively poor.

Contents of the invention

In order to solve the above problems, the invention discloses a preparation process and application of an antibacterial and flame-retardant high-strength composite carpet base cloth.

Technical scheme of the present invention is as follows:

An antibacterial and flame-retardant high-strength composite carpet base cloth, which is formed by interweaving flame-retardant polyester fibers, bio-based fibers and metal wires;

The warp threads of the flame-retardant polyester fibers constitute the warp threads, the metal wires constitute the weft threads, and the bio-based fibers constitute the oblique threads. In this scheme, the flame-retardant polyester fiber endows the carpet base fabric with toughness, certain stretchability and flame retardancy, while the metal wire endows the carpet base fabric with high strength and flame retardancy, and the bio-based fiber endows the carpet base fabric with a relatively strong Good antibacterial properties and toughness. By comprehensively using the weaving scheme of warp and weft intersecting and oblique lines, the final prepared carpet base fabric has high strength, good flame retardancy, strong antibacterial performance, and is environmentally friendly.

Further, the above-mentioned antibacterial and flame-retardant high-strength composite carpet base fabric, the bio-based fiber is prepared by the following steps:

During the spinning process, the bio-based fiber is cooled to a slightly molten state, and then several layers of nano-silver ions are uniformly sprayed on the surface of the bio-based fiber to adhere to the surface of the bio-based fiber, and then cooled to normal temperature to obtain the bio-based fiber ;

Calculated in parts by mass, the bio-based fiber contains 100 parts of PLA, 15-20 parts of polyhydroxyalkanoate, 5-10 parts of lignin; and 5-15 parts of the nano silver ion. Preferably, the average particle size of the above-mentioned nano-silver ions is 50nm.

Further, in the aforementioned antibacterial and flame-retardant high-strength composite carpet base fabric, the temperature in the slightly molten state is between 155-185°C.

Further, the above-mentioned antibacterial, flame-retardant and high-strength composite carpet base cloth, the lower surface of the carpet base cloth is provided with a flame-retardant anti-slip rubber layer, and the lower surface of the flame-retardant anti-slip rubber layer is provided with a number of flame-retardant and anti-slip rubber particles. A plurality of flame-retardant anti-skid rubber particles are arranged in a grid array on the lower surface of the flame-retardant anti-skid rubber layer. A flame-retardant anti-slip rubber layer is arranged on the lower surface of the above-mentioned base cloth, so that it can fit the ground better.

Further, in the above-mentioned antibacterial and flame-retardant high-strength composite carpet base fabric, the angle between the oblique line and the warp line is 45 degrees. After experiments, it was found that the structural strength of the 45-degree angle is the best.

Further, in the aforementioned antibacterial and flame-retardant high-strength composite carpet base fabric, the metal wires are magnesium alloy wires. Magnesium alloy is used, which has low density, high strength, large elastic modulus and good corrosion resistance.

Further, in the above-mentioned antibacterial and flame-retardant high-strength composite carpet base fabric, the average diameter of the warp is 50 μm, the average diameter of the weft is 30 μm, and the average diameter of the oblique lines is 40 μm.

Further, the preparation method of the above-mentioned antibacterial and flame-retardant high-strength composite carpet base cloth comprises the following steps:

S1 Blend the PLA, polyhydroxyalkanoate and lignin in the formula amount and add them to the extruder system, heat and melt and extrude the spinning melt;

S2 Send the spinning melt to the spinning box through the melt conveying pipeline for spinning; the spinning box includes an upper box, a lower box and a spinning assembly, and the spinning melt passes through the upper and lower boxes and then from the spinning The spinneret of the component ejects tow; the spinning temperature of the upper box is controlled at 195-205°C, and the spinning temperature of the lower box is controlled at 210-220°C;

After the S3 tow passes through the slow cooler under the spinneret and the monomer suction part, it enters the temperature-controlled combined cooling part, and the tow is slowly cooled to a slightly molten state by using the hot air blown around the spinneret and the cold air blown from both sides, and then immediately Evenly spray several layers of nano-silver ions, adhere to the surface of bio-based fibers to obtain primary fibers, and then cool down to below 90°C;

S4 stretches and winds the as-spun fibers, controls the drafting temperature at 85-95°C, and the drafting speed at 500-800m/min, and finally obtains bio-based fibers after winding;

S5 forms warp threads from flame-retardant polyester fibers, the metal wires form weft threads, and the bio-based fibers form oblique threads; wherein each cm ² of the base fabric contains 30-50 warp threads, 25-35 weft threads, and 20-20 oblique threads. 40, the slashes are arranged symmetrically in an X shape. The above preparation method is simple and the preparation cost is low.

Further, the preparation method of the above-mentioned antibacterial and flame-retardant high-strength composite carpet base cloth, the extruder step specifically includes the following steps:

Extrude on a twin-screw extruder with an aspect ratio of L/O=24. The twin-screw extruder consists of 6 sections from 1D to 6D and a die head area; add PLA to the twin-screw extruder at 1D The feed port of the polyhydroxyalkanoate is added to the feed port at the 2D place of the twin-screw extruder, and the lignin is added to the feed port at the 3D place of the twin-screw extruder, and finally the spinning melt is extruded ;

The extrusion temperature of each zone is as follows

The first zone 120℃～130℃ The second zone 135℃～145℃

The third zone 145℃～155℃ The fourth zone 155℃～165℃

The fifth zone 165℃～175℃ The sixth zone 175℃～185℃

Die zone 180 ~ 195 ℃.

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

In this scheme, the flame-retardant polyester fiber endows the carpet base fabric with toughness, certain stretchability and flame retardancy, while the metal wire endows the carpet base fabric with high strength and flame retardancy, and the bio-based fiber endows the carpet base fabric with a relatively strong Good antimicrobial properties, toughness and mechanical strength. By comprehensively using the weaving scheme of warp and weft intersecting and oblique lines, the final prepared carpet base fabric has high strength, good flame retardancy, strong antibacterial performance, and is environmentally friendly.

Description of drawings

Fig. 1 is the side schematic diagram of a kind of antibacterial flame-retardant high-strength composite carpet base cloth among the present invention;

Fig. 2 is a microstructure schematic diagram of a kind of antibacterial flame-retardant high-strength composite carpet base cloth in the present invention;

Fig. 3 is the schematic diagram of antibacterial rate in the test example;

Schematic diagram of tear strength (Mpa) in Fig. 4 test cases.

Detailed ways

The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The reagents or instruments used in the examples of the present invention are not indicated by the manufacturer, but are all commercially available conventional reagent products.

Example 1

A kind of antibacterial flame-retardant high-strength composite carpet base cloth as shown in Figure 1 and 2, described carpet base cloth 100 is interwoven by flame-retardant polyester fiber and bio-based fiber and metal wire;

The flame-retardant polyester fiber warps constitute the warps 110, the metal wires constitute the wefts 120, and the bio-based fibers constitute the diagonals 130;

The bio-based fiber is prepared by the following steps:

During the spinning process, the bio-based fiber is cooled to a slightly molten state, and then several layers of nano-silver ions are uniformly sprayed on the surface of the bio-based fiber to adhere to the surface of the bio-based fiber, and then cooled to normal temperature to obtain the bio-based fiber ;

Calculated in parts by mass, the bio-based fiber contains 100 parts of PLA, 15 parts of polyhydroxyalkanoate, 5 parts of lignin; 5 parts of nano silver ions;

The temperature in the slightly molten state is between 155-185°C;

The lower surface of the carpet base cloth 100 is provided with a flame retardant anti-skid rubber layer 200, and the lower surface of the flame retardant anti-skid rubber layer is provided with a number of flame retardant anti-skid rubber particles 201, and the number of flame retardant anti-skid rubber particles 201 are used in the flame retardant and anti-skid layer. The lower surface of the adhesive layer 200 is arranged in a grid array;

The angle between the oblique line 130 and the meridian 110 is 45 degrees;

The metal wire is a magnesium alloy wire;

The average diameter of the warp 110 is 50 μm, the average diameter of the weft 120 is 30 μm, and the average diameter of the oblique line 130 is 40 μm;

The preparation method of the above-mentioned antibacterial and flame-retardant high-strength composite carpet base cloth comprises the following steps:

S1 Blend the PLA, polyhydroxyalkanoate and lignin in the formula amount and add them to the extruder system, heat and melt and extrude the spinning melt;

S2 Send the spinning melt to the spinning box through the melt conveying pipeline for spinning; the spinning box includes an upper box, a lower box and a spinning assembly, and the spinning melt passes through the upper and lower boxes and then from the spinning The spinneret of the component ejects tow; the spinning temperature of the upper box is controlled at 195-205°C, and the spinning temperature of the lower box is controlled at 210-220°C;

After the S3 tow passes through the slow cooler under the spinneret and the monomer suction part, it enters the temperature-controlled combined cooling part, and the tow is slowly cooled to a slightly molten state by using the hot air blown around the spinneret and the cold air blown from both sides, and then immediately Evenly spray several layers of nano-silver ions, adhere to the surface of bio-based fibers to obtain primary fibers, and then cool down to below 90°C;

S4 stretches and winds the as-spun fibers, controls the drafting temperature at 85-95°C, and the drafting speed at 500-800m/min, and finally obtains bio-based fibers after winding;

S5 forms the warp thread 110 by the flame-retardant polyester fiber warp thread, the metal wire forms the weft thread 120, and the bio-based fiber forms the slash thread 130; wherein each cm ³ base cloth contains 30 warp threads 110, 25 weft threads 120, and slash thread 130 There are 20 oblique lines 130 arranged symmetrically in an X shape.

The step S1 specifically includes the following steps:

Extrude on a twin-screw extruder with an aspect ratio of L/O=24. The twin-screw extruder consists of 6 sections from 1D to 6D and a die head area; add PLA to the twin-screw extruder at 1D The feed port of the polyhydroxyalkanoate is added to the feed port at the 2D place of the twin-screw extruder, and the lignin is added to the feed port at the 3D place of the twin-screw extruder, and finally the spinning melt is extruded ;

The extrusion temperature of each zone is as follows

The first zone 120℃～130℃ The second zone 135℃～145℃

The third zone 145℃～155℃ The fourth zone 155℃～165℃

The fifth zone 165℃～175℃ The sixth zone 175℃～185℃

Die zone 180 ~ 195 ℃.

Example 2

An antibacterial and flame-retardant high-strength composite carpet base cloth, the carpet base cloth 100 is formed by interweaving flame-retardant polyester fibers, bio-based fibers and metal wires;

The flame-retardant polyester fiber warps constitute the warps 110, the metal wires constitute the wefts 120, and the bio-based fibers constitute the diagonals 130;

The bio-based fiber is prepared by the following steps:

During the spinning process, the bio-based fiber is cooled to a slightly molten state, and then several layers of nano-silver ions are uniformly sprayed on the surface of the bio-based fiber to adhere to the surface of the bio-based fiber, and then cooled to normal temperature to obtain the bio-based fiber ;

Calculated in parts by mass, the bio-based fiber contains 100 parts of PLA, 18 parts of polyhydroxyalkanoate, and 8 parts of lignin; 10 parts of nano silver ions;

The temperature in the slightly molten state is between 155-185°C;

The lower surface of the carpet base cloth 100 is provided with a flame retardant anti-skid rubber layer 200, and the lower surface of the flame retardant anti-skid rubber layer is provided with a number of flame retardant anti-skid rubber particles 201, and the number of flame retardant anti-skid rubber particles 201 are used in the flame retardant and anti-skid layer. The lower surface of the adhesive layer 200 is arranged in a grid array;

The angle between the oblique line 130 and the meridian 110 is 45 degrees;

The metal wire is a magnesium alloy wire;

The average diameter of the warp 110 is 50 μm, the average diameter of the weft 120 is 30 μm, and the average diameter of the oblique line 130 is 40 μm;

The preparation method of the above-mentioned antibacterial and flame-retardant high-strength composite carpet base cloth comprises the following steps:

S1 Blend the PLA, polyhydroxyalkanoate and lignin in the formula amount and add them to the extruder system, heat and melt and extrude the spinning melt;

S2 Send the spinning melt to the spinning box through the melt conveying pipeline for spinning; the spinning box includes an upper box, a lower box and a spinning assembly, and the spinning melt passes through the upper and lower boxes and then from the spinning The spinneret of the component ejects tow; the spinning temperature of the upper box is controlled at 195-205°C, and the spinning temperature of the lower box is controlled at 210-220°C;

After the S3 tow passes through the slow cooler under the spinneret and the monomer suction part, it enters the temperature-controlled combined cooling part, and the tow is slowly cooled to a slightly molten state by using the hot air blown around the spinneret and the cold air blown from both sides, and then immediately Evenly spray several layers of nano-silver ions, adhere to the surface of bio-based fibers to obtain primary fibers, and then cool down to below 90°C;

S4 stretches and winds the as-spun fibers, controls the drafting temperature at 85-95°C, and the drafting speed at 500-800m/min, and finally obtains bio-based fibers after winding;

S5 forms the warp thread 110 with the flame-retardant polyester fiber warp thread, the metal wire forms the weft thread 120, and the bio-based fiber forms the slash thread 130; wherein each cm ³ base cloth contains 40 warp threads 110, 30 weft threads 120, and slash thread 130 There are 30 oblique lines 130 arranged symmetrically in an X shape.

The step S1 specifically includes the following steps:

Extrude on a twin-screw extruder with an aspect ratio of L/O=24. The twin-screw extruder consists of 6 sections from 1D to 6D and a die head area; add PLA to the twin-screw extruder at 1D The feed port of the polyhydroxyalkanoate is added to the feed port at the 2D place of the twin-screw extruder, and the lignin is added to the feed port at the 3D place of the twin-screw extruder, and finally the spinning melt is extruded ;

The extrusion temperature of each zone is as follows

The first zone 120℃～130℃ The second zone 135℃～145℃

The third zone 145℃～155℃ The fourth zone 155℃～165℃

The fifth zone 165℃～175℃ The sixth zone 175℃～185℃

Die zone 180 ~ 195 ℃.

Example 3

An antibacterial and flame-retardant high-strength composite carpet base cloth, the carpet base cloth 100 is formed by interweaving flame-retardant polyester fibers, bio-based fibers and metal wires;

The flame-retardant polyester fiber warps constitute the warps 110, the metal wires constitute the wefts 120, and the bio-based fibers constitute the diagonals 130;

The bio-based fiber is prepared by the following steps:

During the spinning process, the bio-based fiber is cooled to a slightly molten state, and then several layers of nano-silver ions are evenly sprayed on the surface of the bio-based fiber to adhere to the surface of the bio-based fiber, and then cooled to normal temperature to obtain the bio-based fiber. ;

Calculated in parts by mass, the bio-based fiber contains 100 parts of PLA, 20 parts of polyhydroxyalkanoate, and 10 parts of lignin; 15 parts of the nano silver ion;

The temperature in the slightly molten state is between 155-185°C;

The lower surface of the carpet base cloth 100 is provided with a flame-retardant anti-skid rubber layer 200, and the lower surface of the flame-retardant anti-skid rubber layer is provided with a number of flame-retardant anti-skid rubber particles 201, and the number of flame-resistant anti-skid rubber particles 201 are used in the flame-retardant and anti-skid layer. The lower surface of the adhesive layer 200 is arranged in a grid array;

The angle between the oblique line 130 and the meridian 110 is 45 degrees;

The metal wire is a magnesium alloy wire;

The average diameter of the warp 110 is 50 μm, the average diameter of the weft 120 is 30 μm, and the average diameter of the oblique line 130 is 40 μm;

The preparation method of the above-mentioned antibacterial and flame-retardant high-strength composite carpet base cloth comprises the following steps:

S1 Blend the PLA, polyhydroxyalkanoate and lignin in the formula amount and add them to the extruder system, heat and melt and extrude the spinning melt;

S2 Send the spinning melt into the spinning box through the melt conveying pipeline for spinning; The spinneret of the component ejects tow; the spinning temperature of the upper box is controlled at 195-205°C, and the spinning temperature of the lower box is controlled at 210-220°C;

After the S3 tow passes through the slow cooler under the spinneret and the monomer suction part, it enters the temperature-controlled combined cooling part, and the tow is slowly cooled to a slightly molten state by using the hot air blown around the spinneret and the cold air blown from both sides, and then immediately Evenly spray several layers of nano-silver ions, adhere to the surface of bio-based fibers to obtain primary fibers, and then cool down to below 90°C;

S4 stretches and winds the as-spun fibers, controls the drafting temperature at 85-95°C, and the drafting speed at 500-800m/min, and finally obtains bio-based fibers after winding;

S5 forms warp thread 110 with flame-retardant polyester fiber warp thread, described metal wire forms weft thread 120, and described bio-based fiber forms slash thread 130; wherein every cm ³ base cloth contains 50 warp threads 110, 35 weft threads 120, and slash thread 130 There are 40 oblique lines 130 arranged symmetrically in an X shape.

The step S1 specifically includes the following steps:

It is extruded on a twin-screw extruder with an aspect ratio of L/O=24. The twin-screw extruder consists of 6 sections from 1D to 6D and a die head area; add PLA to the twin-screw extruder at 1D The feed port of the polyhydroxyalkanoate is added to the feed port at the 2D place of the twin-screw extruder, and the lignin is added to the feed port at the 3D place of the twin-screw extruder, and finally the spinning melt is extruded ;

The extrusion temperature of each zone is as follows

The first zone 120℃～130℃ The second zone 135℃～145℃

The third zone 145℃～155℃ The fourth zone 155℃～165℃

The fifth zone 165℃～175℃ The sixth zone 175℃～185℃

Die zone 180 ~ 195 ℃.

Comparative example 1

Does not contain bio-based fiber, the rest are the same as in Example 2

test case

performance test

Detection method/test method

The test of the antibacterial rate of Escherichia coli is carried out in accordance with the provisions of GB/T20944.2-2007 on the evaluation of the antibacterial performance of textiles. When the antibacterial value ≥ 1 or the antibacterial rate ≥ 90.00%, the sample has antibacterial effect. The results are shown in Table 1 and Figures 3 and 4.

Bacteriostatic rate (%) Flame retardant temperature (℃) Tear strength (Mpa) Example 1 97.5 320 15.25 Example 2 98.2 332 16.34 Example 3 99.5 337 17.15 Comparative example 1 85.2 314 10.25

.

The results are shown in Table 1. In the antibacterial and flame-retardant high-strength composite carpet base fabric of the present invention, the flame-retardant polyester fiber imparts toughness, certain stretchability and flame retardancy to the carpet base fabric, while the metal wire imparts The high strength and flame retardancy of the carpet base fabric are guaranteed, and the bio-based fiber endows the carpet base fabric with better antibacterial properties, toughness and mechanical strength. By comprehensively using the weaving scheme of warp and weft intersecting and oblique lines, the final prepared carpet base fabric has high strength, good flame retardancy, strong antibacterial performance, and is environmentally friendly.

The descriptions of the limited preferred embodiments of the invention are relatively specific and detailed, but should not be construed as limiting the patent scope of the invention. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims (10)

1. An antibacterial, flame-retardant, high-strength composite carpet base fabric, characterized in that the carpet base fabric (100) is interwoven with flame-retardant polyester fibers, bio-based fibers and metal wires; The flame-retardant polyester fiber warps constitute warp threads (110), the metal wires constitute weft threads (120), and the bio-based fibers constitute oblique threads (130). 2. A kind of antibacterial and flame-retardant high-strength composite carpet base fabric according to claim 1, wherein the bio-based fiber is prepared from the following steps: During the spinning process, the bio-based fiber is cooled to a slightly molten state, and then several layers of nano-silver ions are uniformly sprayed on the surface of the bio-based fiber to adhere to the surface of the bio-based fiber, and then cooled to normal temperature to obtain the bio-based fiber ; Calculated in parts by mass, the bio-based fiber contains 100 parts of PLA, 15-20 parts of polyhydroxyalkanoate, 5-10 parts of lignin; and 5-15 parts of the nano silver ion. 3. The antibacterial and flame-retardant high-strength composite carpet base fabric according to claim 2, characterized in that the temperature in the slightly molten state is between 155-185°C. 4. An antibacterial and flame-retardant high-strength composite carpet base fabric according to claim 1, characterized in that, the lower surface of the carpet base fabric (100) is provided with a flame-retardant anti-slip rubber layer (200), and the flame-retardant The lower surface of the anti-skid rubber layer is provided with a number of flame-retardant anti-skid rubber particles (201), and the several flame-resistant anti-skid rubber particles (201) are arranged in a grid array on the lower surface of the flame-resistant anti-skid rubber layer (200). 5. The antibacterial and flame-retardant high-strength composite carpet base fabric according to claim 1, characterized in that, the angle between the oblique line (130) and the warp line (110) is 45 degrees. 6. The antibacterial and flame-retardant high-strength composite carpet base fabric according to claim 1, wherein the metal wire is a magnesium alloy wire. 7. The antibacterial and flame-retardant high-strength composite carpet base fabric according to claim 1, characterized in that, the average diameter of the warp (110) is 50 μm, the average diameter of the weft (120) is 30 μm, and the oblique The wires ( 130 ) have an average diameter of 40 μm. 8. the preparation method of the antibacterial flame-retardant high-strength composite carpet base cloth as described in any one of claim 1-7, is characterized in that, comprises the following steps: S1 Blend the PLA, polyhydroxyalkanoate and lignin in the formula amount and add them to the extruder system, heat and melt and extrude the spinning melt; S2 Send the spinning melt to the spinning box through the melt conveying pipeline for spinning; the spinning box includes an upper box, a lower box and a spinning assembly, and the spinning melt passes through the upper and lower boxes and then from the spinning The spinneret of the component ejects tow; the spinning temperature of the upper box is controlled at 195-205°C, and the spinning temperature of the lower box is controlled at 210-220°C; After the S3 tow passes through the slow cooler under the spinneret and the monomer suction part, it enters the temperature-controlled combined cooling part, and the tow is slowly cooled to a slightly molten state by using the hot air blown around the spinneret and the cold air blown from both sides, and then immediately Evenly spray several layers of nano-silver ions, adhere to the surface of bio-based fibers to obtain primary fibers, and then cool down to below 90°C; S4 stretches and winds the as-spun fibers, controls the drafting temperature at 85-95°C, and the drafting speed at 500-800m/min, and finally obtains bio-based fibers after winding; S5 Use flame-retardant polyester fiber warps to form warps (110), the metal wires to form wefts (120), and the bio-based fibers to form slashes (130); wherein each cm ² of the base fabric contains 30-50 warps (110) There are 25-35 weft threads (120) and 20-40 oblique threads (130), and the oblique threads (130) are arranged symmetrically in an X shape. 9. The preparation method according to claim 8, wherein said step S1 specifically comprises the following steps: Extrude on a twin-screw extruder with an aspect ratio of L/O=24. The twin-screw extruder consists of 6 sections from 1D to 6D and a die head area; add PLA to the twin-screw extruder at 1D The feed port of the polyhydroxyalkanoate is added to the feed port at the 2D place of the twin-screw extruder, and the lignin is added to the feed port at the 3D place of the twin-screw extruder, and finally the spinning melt is extruded ; The extrusion temperature of each zone is as follows The first zone 120℃～130℃ The second zone 135℃～145℃ The third zone 145℃～155℃ The fourth zone 155℃～165℃ The fifth zone 165℃～175℃ The sixth zone 175℃～185℃ Die zone 180 ~ 195 ℃. 10. the purposes of the antibacterial flame-retardant high-strength composite carpet base cloth as described in any one of claim 1-7 in the preparation camping carpet.

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