Textile composite material for tufted carpet base cloth

Abstract

The invention discloses a textile composite material for tufted carpet base cloth, and relates to the technical field of textile composite materials, the textile composite material is prepared from the following raw materials by weight: 10-15 parts of natural bamboo fiber, 20-30 parts of aramid fiber, 50-70 parts of polyester fiber, and 30-45 parts of functional synthetic fiber; the functional synthetic fiber is prepared from the following components in parts by weight: 30-40 parts of PA66 resin, 20-30 parts of a functional polymer and 5-8 parts of carboxyl modified nano filler, the functional polymer comprises a structural unit introduced by the following monomers: 3, 7-diamino-5-phenyl phenazine chloride, 2, 3-quinoline dicarboxylic acid, 3, 3 '-diamino-4, 4'-difluorodiphenyl sulfone, and bis (4-carboxyl phenyl) phenyl phosphine oxide. The composite material is good in mechanical property and excellent in antibacterial property, flame retardance and wear resistance.

Description

Technical Field

[0001] The present invention relates to the technical field of textile composites, and in particular to a textile composite for a tufted carpet base fabric. Background Art

[0002] Carpets are floor covering materials made of wool, cotton, linen or chemically synthesized fiber materials, either by hand or by machine. They are widely used in various places such as hotels, homes, schools, meeting rooms, airplanes, etc., and have various functions such as sterilization, moisture-proof, heat insulation, noise reduction, and beautifying the indoor environment. As an efficiently manufactured carpet, tufted carpets have become the most popular products in the carpet industry. With the improvement of people's living standards, the quality and performance requirements for tufted carpets are increasing day by day, and the performance of their base fabrics directly affects the overall quality and service life of the carpets.

[0003] Currently, there are many problems with traditional tufted carpet base fabric materials. In terms of abrasion resistance, during long-term use, the existing base fabrics are prone to wear and fuzzing due to frequent friction. In terms of tensile resistance, when the existing base fabrics are stretched by a large external force, they are prone to deformation or even breakage. In addition, the tufted carpet base fabric materials on the market also more or less have technical defects such as insufficient bonding strength with the tufted layer, which is prone to cause pile shedding; generally low flame retardancy, making it difficult to meet the fire safety requirements of public places; poor antibacterial performance. When liquid spills on the carpet, the base fabric is prone to absorb moisture, which will not only cause the carpet to mildew and breed bacteria, but also affect the appearance and dimensional stability of the carpet.

[0004] To solve the above problems, a Chinese invention patent with the authorized publication number of CN104859249B discloses a textile composite for a tufted carpet base fabric, which includes from bottom to top: a first base fabric layer, which is a non-woven fabric made of high molecular weight polyethylene fibers, and the thickness of the non-woven fabric is 0.3 - 0.8 mm; a second base fabric layer, which is bonded to the first base fabric layer through a first adhesive, and the second base fabric layer includes a polyester plain weave bottom cloth, a middle lining woven by a leno weave with first PET monofilaments, and a surface cloth attached to the upper surface of the middle lining. The middle lining forms a net-shaped accommodating space on the polyester plain weave bottom cloth, and each accommodating space is filled with aromatic particles; a third base fabric layer, which is bonded to the second base fabric layer through a second adhesive, and the third base fabric layer is a raised stripe structure woven by second PET monofilaments with a concave-convex weave. This invention has a simple structure and simultaneously has an aromatic effect and a raised stripe structure, which can make users feel happy and healthy. However, its antibacterial property, flame retardancy, and abrasion resistance still need to be further improved.

[0005] It can be seen that developing a textile composite material for tufted carpet backing with good mechanical properties, excellent antibacterial, flame retardant and wear resistance meets the market demand, has broad market value and application prospects, and is of great significance for promoting the development of the carpet backing material field. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a textile composite material for tufted carpet backing with good mechanical properties, excellent antibacterial, flame retardant and wear resistance.

[0007] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0008] A textile composite material for tufted carpet backing is made from the following raw materials by weight: 10-15 parts of bamboo raw fiber, 20-30 parts of aramid fiber, 50-70 parts of polyester fiber, 30-45 parts of functional synthetic fiber; the functional synthetic fiber is made from the following components by weight: 30-40 parts of PA66 resin, 20-30 parts of functional polymer, 5-8 parts of carboxyl modified nano filler; the functional polymer includes the structural units introduced by the following monomers: 3,7-diamino-5-phenylphenazine chloride, 2,3-quinoline dicarboxylic acid, 3,3'-diamino-4,4'-difluorodiphenyl sulfone, bis(4-carboxyphenyl)phenylphosphine oxide.

[0009] Preferably, the preparation method of the functional polymer includes the following steps: adding 3,7-diamino-5-phenylphenazine chloride, 2,3-quinoline dicarboxylic acid, 3,3'-diamino-4,4'-difluorodiphenyl sulfone, bis(4-carboxyphenyl)phenylphosphine oxide, and catalyst into a high-boiling solvent, mixing evenly to obtain a mixed material, then adding the mixed material into a reaction kettle, replacing the air in the kettle with inert gas, reacting at 125-135°C for 2-4 hours under normal pressure, then raising the temperature to 240-255°C, carrying out polycondensation reaction at 50-300 Pa for 18-24 hours, then cooling to room temperature, adjusting to normal pressure, precipitating in water, washing the crude product with ethanol 3-6 times, and then drying in a vacuum drying oven at 95-100°C to constant weight to obtain the functional polymer.

[0010] Preferably, the molar ratio of 3,7-diamino-5-phenylphenazine chloride, 2,3-quinoline dicarboxylic acid, 3,3'-diamino-4,4'-difluorodiphenyl sulfone, bis(4-carboxyphenyl)phenylphosphine oxide, catalyst, and high-boiling solvent is 0.3:0.5:0.7:0.5:(0.8-1.2):(6-10).

[0011] Preferably, the catalyst is a mixture of thiophosphonate, 2,4-bis(trifluoromethyl)phenylboric acid, phosphorous acid, and thiophosphoramide in a mass ratio of 1:(0.8-1.2):2:(0.8-1); the high boiling point solvent is dimethyl sulfoxide; and the inert gas is any one of nitrogen, helium, neon, and argon.

[0012] Preferably, the method for preparing the functional synthetic fiber comprises the following steps: uniformly mixing the components to obtain a mixture, adding the mixture into a melt spinning machine for melt spinning, and then washing with clean water and drying in sequence to prepare the functional synthetic fiber.

[0013] Preferably, the process parameters of the melt spinning are: spinning temperature 285-295° C., winding speed 800-1500 m / min, and draft ratio 3.2-4.2.

[0014] Preferably, the grade of the PA66 resin is 101NC010.

[0015] Preferably, the carboxyl-modified nanofiller is a carboxylated multi-walled carbon nanotube with a particle size of 8 nm and a length of 10-30 μm, which is provided by Xi'an Qiyue Biotechnology Co., Ltd.

[0016] Preferably, the length of the bamboo fiber is 38-51 mm, and the fineness is 1.5-2.5 dtex.

[0017] Preferably, the aramid fiber is aramid 1313 fiber with a length of 38-51 mm and a fineness of 1.5-2.5 dtex.

[0018] Preferably, the polyester fiber is PET fiber with a length of 38-51 mm and a fineness of 1.5-2.5 dtex.

[0019] Another object of the present invention is to provide a method for preparing the textile composite material for tufted carpet base cloth, comprising the following steps: mixing bamboo fiber, aramid fiber, polyester fiber and functional synthetic fiber in proportion, and making a fiber web through opening, carding and web laying processes; hydroentangling the fiber web; drying and heat-setting the hydroentangled fiber web to obtain the textile composite material for tufted carpet base cloth.

[0020] Preferably, the water spunlace pressure of the water spunlace reinforcement is 100-150 bar, and the number of water spunlace passes is 3-5.

[0021] Preferably, the drying temperature is 110-130° C., the heat setting temperature is 150-170° C., and the heat setting time is 1-2 min.

[0022] The beneficial effects produced by adopting the above technical solutions are as follows:

[0023] (1) The preparation method of the textile composite material for tufted carpet base fabric provided by the present invention is simple and easy to implement, easy to realize, has low dependence on equipment, high preparation efficiency and high finished product qualification rate, and is suitable for large-scale industrial production.

[0024] (2) The textile composite material for tufted carpet base fabric provided by the present invention is made of the following raw materials by weight: 10-15 parts of bamboo raw fiber, 20-30 parts of aramid fiber, 50-70 parts of polyester fiber, and 30-45 parts of functional synthetic fiber; the functional synthetic fiber is made of the following components by weight: 30-40 parts of PA66 resin, 20-30 parts of functional polymer, and 5-8 parts of carboxyl-modified nano filler; the functional polymer includes the structural units introduced by the following monomers: 3,7-diamino-5-phenylphenazine chloride, 2,3-quinoline dicarboxylic acid, 3,3'-diamino-4,4'-difluorodiphenyl sulfone, and bis(4-carboxyphenyl)phenyl phosphine oxide. Through the mutual cooperation and joint action of the raw materials and components, the prepared composite material has good mechanical and mechanical properties, excellent antibacterial, flame retardant and wear resistance. The compounding of multiple fiber materials can combine their respective advantages and improve the above properties of the composite material.

[0025] (3) The textile composite material for tufted carpet base fabric provided by the present invention, the functional polymer includes the structural units introduced by the following monomers: 3,7-diamino-5-phenylphenazine chloride, 2,3-quinoline dicarboxylic acid, 3,3'-diamino-4,4'-difluorodiphenyl sulfone, and bis(4-carboxyphenyl)phenyl phosphine oxide. At the same time, phenazine cation salt, quinoline, fluorosulfone, phenyl phosphine oxide and amide structure are introduced. Under the multiple effects of electronic effect, steric effect and conjugation effect, the prepared product has better antibacterial performance, better mechanical and mechanical properties, and more excellent flame retardant and wear resistance; the addition of carboxyl-modified nano filler can not only improve the tensile strength, but also improve the wear resistance and processing performance, endowing the material with functionality. Through surface carboxyl modification, the compatibility can be improved and the dispersion uniformity performance can be enhanced; it is connected with phenazine cation by ionic bond to further improve the above properties.

[0026] (4) The textile composite material for tufted carpet base fabric provided by the present invention can effectively improve the processing performance by reasonably selecting the preparation process parameters, and endow the product with excellent mechanical and mechanical properties, antibacterial, flame retardant and wear resistance. Detailed implementation mode

[0027] To enable those skilled in the art to better understand the technical solution of the present invention and make the above features, objectives, and advantages of the present invention clearer and easier to understand, the present invention will be further described below in conjunction with embodiments. The embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0028] Example 1

[0029] A textile composite material for tufted carpet backing is made from the following raw materials by weight: 10 parts of bamboo fiber, 20 parts of aramid fiber, 70 parts of polyester fiber, and 30 parts of functional synthetic fiber; the functional synthetic fiber is made from the following components by weight: 40 parts of PA66 resin, 20 parts of functional polymer, and 5 parts of carboxyl-modified nano filler; the functional polymer includes structural units introduced by the following monomers: 3,7-diamino-5-phenylphenazine chloride, 2,3-quinoline dicarboxylic acid, 3,3'-diamino-4,4'-difluorodiphenyl sulfone, and bis(4-carboxyphenyl)phenyl phosphine oxide.

[0030] The preparation method of the functional polymer includes the following steps: Add 3,7-diamino-5-phenylphenazine chloride, 2,3-quinoline dicarboxylic acid, 3,3'-diamino-4,4'-difluorodiphenyl sulfone, bis(4-carboxyphenyl)phenyl phosphine oxide, and catalyst to a high-boiling solvent, mix evenly to obtain a mixed material, then add the mixed material to a reaction kettle, displace the air in the kettle with an inert gas, react at 125°C for 2 hours under normal pressure, then raise the temperature to 240°C, carry out polycondensation reaction at 50 Pa for 18 hours, then cool to room temperature, adjust to normal pressure, precipitate in water, wash the crude product 3 times with ethanol, and then place it in a vacuum drying oven and dry to constant weight at 95°C to obtain the functional polymer; the molar ratio of 3,7-diamino-5-phenylphenazine chloride, 2,3-quinoline dicarboxylic acid, 3,3'-diamino-4,4'-difluorodiphenyl sulfone, bis(4-carboxyphenyl)phenyl phosphine oxide, catalyst, and high-boiling solvent is 0.3:0.5:0.7:0.5:0.8:6; the catalyst is a mixture of thiophosphonate, 2,4-bis(trifluoromethyl)phenylboronic acid, phosphorous acid, and thiophosphoramide in a mass ratio of 1:0.8:2:0.8; the high-boiling solvent is dimethyl sulfoxide; the inert gas is nitrogen. Through GPC testing, the M n of this functional polymer was measured to be 15150 g / mol, and M W / M n = 1.347; through elemental analysis and weight change calculation, the molar ratio of the structural units introduced by 3,7-diamino-5-phenylphenazine chloride, 2,3-quinoline dicarboxylic acid, 3,3'-diamino-4,4'-difluorodiphenyl sulfone, and bis(4-carboxyphenyl)phenyl phosphine oxide in this functional polymer is the same as the theoretical value.

[0031] The preparation method of the functional synthetic fiber comprises the following steps: uniformly mixing the components to obtain a mixed material, adding the mixed material into a melt spinning machine for melt spinning, and then washing with clean water and drying in sequence to prepare the functional synthetic fiber; the process parameters of the melt spinning are: spinning temperature 285°C, winding speed 800m / min, and drafting multiple 4.

[0032] The PA66 resin is 101NC010; the carboxyl-modified nanofiller is a carboxylated multi-walled carbon nanotube with a particle size of 8 nm and a length of 10-30 μm, provided by Xi'an Qiyue Biotechnology Co., Ltd.; the length of the bamboo fiber is 38 mm and the fineness is 1.5 dtex; the aramid fiber is aramid 1313 fiber with a length of 38 mm and a fineness of 1.5 dtex; the polyester fiber is PET fiber with a length of 38 mm and a fineness of 1.5 dtex.

[0033] A method for preparing a textile composite material for a tufted carpet base fabric comprises the following steps: mixing bamboo fiber, aramid fiber, polyester fiber and functional synthetic fiber in proportion, and preparing a fiber web through opening, combing and web laying processes; hydroentanglement-reinforced the fiber web; drying and heat-setting the hydroentangled fiber web to obtain a textile composite material for a tufted carpet base fabric; the hydroentanglement pressure of the hydroentanglement reinforcement is 100 bar, and the number of hydroentanglement passes is 3; the drying temperature is 110° C., the heat setting temperature is 150° C., and the heat setting time is 1 min.

[0034] Example 2

[0035] A textile composite material for tufted carpet base cloth comprises the following raw materials in parts by weight: 12 parts of bamboo fiber, 23 parts of aramid fiber, 65 parts of polyester fiber and 35 parts of functional synthetic fiber; the functional synthetic fiber is made of the following components in parts by weight: 38 parts of PA66 resin, 23 parts of functional polymer and 6 parts of carboxyl modified nano filler; the functional polymer comprises structural units introduced by the following monomers: 3,7-diamino-5-phenylphenazine chloride, 2,3-quinolinedicarboxylic acid, 3,3'-diamino-4,4'-difluorodiphenyl sulfone and bis(4-carboxyphenyl)phenylphosphine oxide.

[0036] The preparation method of the functional polymer comprises the following steps: adding 3,7-diamino-5-phenylphenazine chloride, 2,3-quinolinedicarboxylic acid, 3,3'-diamino-4,4'-difluorodiphenyl sulfone, bis(4-carboxyphenyl)phenylphosphine oxide and a catalyst into a high boiling point solvent and mixing them evenly to obtain a mixed material; then adding the mixed material into a reaction kettle, replacing the air in the kettle with an inert gas, reacting at 127°C for 2.5 hours at normal pressure, then heating to 245°C, performing a polycondensation reaction at 100 Pa for 20 hours, then cooling to room temperature, adjusting to normal pressure, precipitating in water, washing the crude product with ethanol for 4 times, and then The mixture is placed in a vacuum drying oven at 97° C. and dried to constant weight to obtain a functional polymer; the molar ratio of the 3,7-diamino-5-phenylphenazine chloride, 2,3-quinolinedicarboxylic acid, 3,3'-diamino-4,4'-difluorodiphenyl sulfone, bis(4-carboxyphenyl)phenylphosphine oxide, catalyst and high boiling point solvent is 0.3:0.5:0.7:0.5:0.9:7; the catalyst is a mixture of thiophosphonate, 2,4-bis(trifluoromethyl)phenylboric acid, phosphorous acid and thiophosphoramide in a mass ratio of 1:0.9:2:0.85; the high boiling point solvent is dimethyl sulfoxide; and the inert gas is helium.

[0037] The preparation method of the functional synthetic fiber comprises the following steps: uniformly mixing the components to obtain a mixed material, adding the mixed material into a melt spinning machine for melt spinning, and then washing with clean water and drying in sequence to prepare the functional synthetic fiber; the process parameters of the melt spinning are: spinning temperature 288°C, winding speed 1100m / min, and drafting multiple 4.

[0038] The PA66 resin is 101NC010; the carboxyl-modified nanofiller is a carboxylated multi-walled carbon nanotube with a particle size of 8 nm and a length of 10-30 μm, provided by Xi'an Qiyue Biotechnology Co., Ltd.; the length of the bamboo fiber is 42 mm and the fineness is 1.7 dtex; the aramid fiber is aramid 1313 fiber with a length of 42 mm and a fineness of 1.7 dtex; the polyester fiber is PET fiber with a length of 42 mm and a fineness of 1.7 dtex.

[0039] A method for preparing a textile composite material for a tufted carpet base fabric comprises the following steps: mixing bamboo fiber, aramid fiber, polyester fiber and functional synthetic fiber in proportion, and preparing a fiber web through opening, combing and web laying processes; hydroentanglement-reinforced the fiber web; drying and heat-setting the hydroentangled fiber web to obtain a textile composite material for a tufted carpet base fabric; the hydroentanglement pressure of the hydroentanglement reinforcement is 120 bar, and the number of hydroentanglement passes is 4; the drying temperature is 115° C., the heat setting temperature is 155° C., and the heat setting time is 1.2 min.

[0040] Example 3

[0041] A textile composite material for tufted carpet base fabric, which is made of the following raw materials by weight: 13 parts of bamboo fiber, 25 parts of aramid fiber, 60 parts of polyester fiber, and 38 parts of functional synthetic fiber; the functional synthetic fiber is made of the following components by weight: 35 parts of PA66 resin, 25 parts of functional polymer, and 6.5 parts of carboxyl-modified nano filler; the functional polymer includes structural units introduced by the following monomers: 3,7-diamino-5-phenylphenazine chloride, 2,3-quinoline dicarboxylic acid, 3,3'-diamino-4,4'-difluorodiphenyl sulfone, and bis(4-carboxyphenyl)phenylphosphine oxide.

[0042] The preparation method of the functional polymer includes the following steps: adding 3,7-diamino-5-phenylphenazine chloride, 2,3-quinoline dicarboxylic acid, 3,3'-diamino-4,4'-difluorodiphenyl sulfone, bis(4-carboxyphenyl)phenylphosphine oxide, and a catalyst into a high-boiling solvent, mixing evenly to obtain a mixed material, then adding the mixed material into a reaction kettle, replacing the air in the kettle with an inert gas, reacting at 130 °C under normal pressure for 3 hours, then raising the temperature to 249 °C, carrying out polycondensation reaction at 200 Pa for 21 hours, then cooling to room temperature, adjusting to normal pressure, precipitating in water, washing the crude product 5 times with ethanol, and then drying in a vacuum drying oven at 98 °C to constant weight to obtain the functional polymer; the molar ratio of 3,7-diamino-5-phenylphenazine chloride, 2,3-quinoline dicarboxylic acid, 3,3'-diamino-4,4'-difluorodiphenyl sulfone, bis(4-carboxyphenyl)phenylphosphine oxide, the catalyst, and the high-boiling solvent is 0.3:0.5:0.7:0.5:1:8; the catalyst is a mixture of thiophosphonate, 2,4-bis(trifluoromethyl)phenylboronic acid, phosphorous acid, and thiophosphoramide in a mass ratio of 1:1:2:0.9; the high-boiling solvent is dimethyl sulfoxide; the inert gas is neon.

[0043] The preparation method of the functional synthetic fiber includes the following steps: mixing each component evenly to obtain a mixed material, adding the mixed material into a melt spinning machine for melt spinning, and then successively carrying out washing with clear water and drying to make the functional synthetic fiber; the process parameters of the melt spinning are: spinning temperature 290 °C, winding speed 1200 m / min, and drawing ratio 4.

[0044] The grade of the PA66 resin is 101NC010; the carboxyl-modified nanofiller is a carboxylated multi-walled carbon nanotube with a particle size of 8 nm and a length of 10-30 μm, provided by Xi'an Qiyue Biotechnology Co., Ltd.; the length of the bamboo fiber is 45 mm and the fineness is 2 dtex; the aramid fiber is aramid 1313 fiber with a length of 45 mm and a fineness of 2 dtex; the polyester fiber is PET fiber with a length of 45 mm and a fineness of 2 dtex.

[0045] A method for preparing a textile composite material for a tufted carpet base fabric comprises the following steps: mixing bamboo fiber, aramid fiber, polyester fiber and functional synthetic fiber in proportion, and preparing a fiber web through opening, combing and web laying processes; hydroentanglement-reinforced the fiber web; drying and heat-setting the hydroentangled fiber web to obtain a textile composite material for a tufted carpet base fabric; the hydroentanglement pressure of the hydroentanglement reinforcement is 130 bar, and the number of hydroentanglement passes is 4; the drying temperature is 120° C., the heat setting temperature is 160° C., and the heat setting time is 1.5 min.

[0046] Example 4

[0047] A textile composite material for tufted carpet base cloth comprises the following raw materials in parts by weight: 14 parts of bamboo fiber, 28 parts of aramid fiber, 55 parts of polyester fiber and 43 parts of functional synthetic fiber; the functional synthetic fiber is made of the following components in parts by weight: 33 parts of PA66 resin, 28 parts of functional polymer and 7.5 parts of carboxyl modified nano filler; the functional polymer comprises structural units introduced by the following monomers: 3,7-diamino-5-phenylphenazine chloride, 2,3-quinolinedicarboxylic acid, 3,3'-diamino-4,4'-difluorodiphenyl sulfone and bis(4-carboxyphenyl)phenylphosphine oxide.

[0048] The preparation method of the functional polymer comprises the following steps: adding 3,7-diamino-5-phenylphenazine chloride, 2,3-quinolinedicarboxylic acid, 3,3'-diamino-4,4'-difluorodiphenyl sulfone, bis(4-carboxylphenyl)phenylphosphine oxide and a catalyst into a high boiling point solvent and mixing them evenly to obtain a mixed material; then adding the mixed material into a reaction kettle, replacing the air in the kettle with an inert gas, reacting at 133° C. for 3.5 hours at normal pressure, then heating to 253° C., performing a polycondensation reaction at 260 Pa for 23 hours, then cooling to room temperature, adjusting to normal pressure, precipitating in water, washing the crude product with ethanol for 6 times, and then drying it in a vacuum drying oven at 99° C. to constant weight to obtain the functional polymer.

[0049] The molar ratio of the 3,7-diamino-5-phenylphenazine chloride, 2,3-quinolinedicarboxylic acid, 3,3'-diamino-4,4'-difluorodiphenyl sulfone, bis(4-carboxyphenyl)phenylphosphine oxide, catalyst and high boiling point solvent is 0.3:0.5:0.7:0.5:1.1:9.5; the catalyst is a mixture of thiophosphonate, 2,4-bis(trifluoromethyl)phenylboric acid, phosphorous acid and thiophosphoramide in a mass ratio of 1:1.1:2:0.95; the high boiling point solvent is dimethyl sulfoxide; and the inert gas is argon.

[0050] The preparation method of the functional synthetic fiber comprises the following steps: uniformly mixing the components to obtain a mixed material, adding the mixed material into a melt spinning machine for melt spinning, and then washing with clean water and drying in sequence to prepare the functional synthetic fiber; the process parameters of the melt spinning are: spinning temperature 293°C, winding speed 1400m / min, and drafting multiple 4.

[0051] The PA66 resin is 101NC010; the carboxyl-modified nanofiller is a carboxylated multi-walled carbon nanotube with a particle size of 8 nm and a length of 10-30 μm, provided by Xi'an Qiyue Biotechnology Co., Ltd.; the length of the bamboo fiber is 50 mm and the fineness is 2.3 dtex; the aramid fiber is aramid 1313 fiber with a length of 50 mm and a fineness of 2.3 dtex; the polyester fiber is PET fiber with a length of 50 mm and a fineness of 2.3 dtex.

[0052] A method for preparing a textile composite material for a tufted carpet base fabric comprises the following steps: mixing bamboo fiber, aramid fiber, polyester fiber and functional synthetic fiber in proportion, and preparing a fiber web through opening, combing and web laying processes; hydroentanglement-reinforced the fiber web; drying and heat-setting the hydroentangled fiber web to obtain a textile composite material for a tufted carpet base fabric; the hydroentanglement pressure of the hydroentanglement reinforcement is 140 bar, and the number of hydroentanglement passes is 5; the drying temperature is 125° C., the heat setting temperature is 165° C., and the heat setting time is 1.8 min.

[0053] Example 5

[0054] A textile composite material for tufted carpet backing is made from the following raw materials by weight: 15 parts of bamboo original fiber, 30 parts of aramid fiber, 50 parts of polyester fiber, and 45 parts of functional synthetic fiber; the functional synthetic fiber is made from the following components by weight: 30 parts of PA66 resin, 30 parts of functional polymer, and 8 parts of carboxyl-modified nano filler; the functional polymer includes structural units introduced by the following monomers: 3,7-diamino-5-phenylphenazine chloride, 2,3-quinoline dicarboxylic acid, 3,3'-diamino-4,4'-difluorodiphenyl sulfone, and bis(4-carboxyphenyl)phenylphosphine oxide.

[0055] The preparation method of the functional polymer includes the following steps: adding 3,7-diamino-5-phenylphenazine chloride, 2,3-quinoline dicarboxylic acid, 3,3'-diamino-4,4'-difluorodiphenyl sulfone, bis(4-carboxyphenyl)phenylphosphine oxide, and a catalyst into a high-boiling solvent, mixing evenly to obtain a mixed material, then adding the mixed material into a reaction kettle, replacing the air in the kettle with an inert gas, reacting at 135 °C for 4 hours under normal pressure, then heating to 255 °C, carrying out a polycondensation reaction at 300 Pa for 24 hours, then cooling to room temperature, adjusting to normal pressure, precipitating in water, washing the crude product with ethanol 6 times, and then drying in a vacuum drying oven at 100 °C to constant weight to obtain the functional polymer.

[0056] The molar ratio of 3,7-diamino-5-phenylphenazine chloride, 2,3-quinoline dicarboxylic acid, 3,3'-diamino-4,4'-difluorodiphenyl sulfone, bis(4-carboxyphenyl)phenylphosphine oxide, the catalyst, and the high-boiling solvent is 0.3:0.5:0.7:0.5:1.2:10; the catalyst is a mixture of thiophosphonate, 2,4-bis(trifluoromethyl)phenylboronic acid, phosphorous acid, and thiophosphoramide in a mass ratio of 1:1.2:2:1; the high-boiling solvent is dimethyl sulfoxide; the inert gas is nitrogen.

[0057] The preparation method of the functional synthetic fiber includes the following steps: mixing the components evenly to obtain a mixed material, adding the mixed material into a melt spinning machine for melt spinning, and then successively carrying out washing with clear water and drying to make the functional synthetic fiber; the process parameters of the melt spinning are: spinning temperature 295 °C, winding speed 1500 m / min, and draw ratio 4.

[0058] The grade of the PA66 resin is 101NC010; the carboxyl-modified nanofiller is a carboxylated multi-walled carbon nanotube with a particle size of 8 nm and a length of 10-30 μm, provided by Xi'an Qiyue Biotechnology Co., Ltd.; the length of the bamboo fiber is 51 mm and the fineness is 2.5 dtex; the aramid fiber is aramid 1313 fiber with a length of 51 mm and a fineness of 2.5 dtex; the polyester fiber is PET fiber with a length of 51 mm and a fineness of 2.5 dtex.

[0059] A method for preparing a textile composite material for a tufted carpet base fabric comprises the following steps: mixing bamboo fiber, aramid fiber, polyester fiber and functional synthetic fiber in proportion, and preparing a fiber web through opening, combing and web laying processes; hydroentanglement-reinforced the fiber web; drying and heat-setting the hydroentangled fiber web to obtain a textile composite material for a tufted carpet base fabric; the hydroentanglement pressure of the hydroentanglement reinforcement is 150 bar, and the number of hydroentanglement passes is 5; the drying temperature is 130° C., the heat setting temperature is 170° C., and the heat setting time is 2 min.

[0060] Comparative Example 1

[0061] A textile composite material for tufted carpet base fabric is substantially the same as Example 1, except that an equal amount of aramid fiber is used instead of bamboo fiber, and an equal amount of 3,3'-diamino-4,4'-difluorodiphenyl sulfone is used instead of 3,7-diamino-5-phenylphenazine chloride.

[0062] Comparative Example 2

[0063] A textile composite material for tufted carpet base fabric is substantially the same as Example 1, except that an equal amount of polyester fiber is used instead of bamboo fiber, and an equal amount of 3,7-diamino-5-phenylphenazine chloride is used instead of 3,3'-diamino-4,4'-difluorodiphenyl sulfone.

[0064] The textile composite materials for tufted carpet base fabrics prepared in Examples 1-5 and Comparative Examples 1-2 were respectively subjected to relevant performance tests. The test results are shown in Table 1. The test methods are as follows:

[0065] (1) Wear resistance: Referring to ASTM D3884 standard, Taber abrasion tester (pressure 9.8 kPa, 5000 cycles) was used to record the mass loss rate.

[0066] (2) Antibacterial activity: The antibacterial effect was evaluated with reference to GB / T20944.1-2007, and the test bacteria were Staphylococcus aureus (ATCC 6538) and Escherichia coli (ATCC 25922).

[0067] (3) Flame retardancy: Refer to GB / T 5454-1997 for limiting oxygen index test.

[0068] (4) Tear strength: Tested with reference to GB / T 3917.3-2009.

[0069] As can be seen from Table 1, compared with the comparative example, the textile composite material for tufted carpet backing disclosed in the embodiments of the present invention has better wear resistance, antibacterial property, flame retardancy and tear resistance; the combined use of aramid fiber, bamboo fiber, polyester fiber, 3,3'-diamino-4,4'-difluorodiphenyl sulfone and 3,7-diamino-5-phenylphenazine chloride is beneficial to improving the above properties.

[0070] Table 1 Performance test results of textile composite materials for tufted carpet backing

[0071]

[0072] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A textile composite material for a tufted carpet backing, characterized in that, It is made from the following raw materials by weight: 10-15 parts of bamboo original fiber, 20-30 parts of aramid fiber, 50-70 parts of polyester fiber, and 30-45 parts of functional synthetic fiber; the functional synthetic fiber is made from the following components by weight: 30-40 parts of PA66 resin, 20-30 parts of functional polymer, and 5-8 parts of carboxyl-modified nano filler; the functional polymer includes structural units introduced by the following monomers: 3,7-diamino-5-phenylphenazine chloride, 2,3-quinoline dicarboxylic acid, 3,3'-diamino-4,4'-difluorodiphenyl sulfone, and bis(4-carboxyphenyl)phenylphosphine oxide.

2. The textile composite material for tufted carpet backing according to claim 1, characterized in that, The preparation method of the functional polymer includes the following steps: adding 3,7-diamino-5-phenylphenazine chloride, 2,3-quinoline dicarboxylic acid, 3,3'-diamino-4,4'-difluorodiphenyl sulfone, bis(4-carboxyphenyl)phenylphosphine oxide, and a catalyst into a high-boiling solvent, mixing evenly to obtain a mixed material, then adding the mixed material into a reaction kettle, replacing the air in the kettle with an inert gas, reacting at 125-135 °C under normal pressure for 2-4 hours, then heating to 240-255 °C, carrying out polycondensation reaction at 50-300 Pa for 18-24 hours, then cooling to room temperature, adjusting to normal pressure, precipitating in water, washing the crude product with ethanol 3-6 times, and then drying in a vacuum drying oven at 95-100 °C to constant weight to obtain the functional polymer.

3. The textile composite material for a tufted carpet backing according to claim 2, characterized in that, The molar ratio of 3,7-diamino-5-phenylphenazine chloride, 2,3-quinoline dicarboxylic acid, 3,3'-diamino-4,4'-difluorodiphenyl sulfone, bis(4-carboxyphenyl)phenylphosphine oxide, the catalyst, and the high-boiling solvent is 0.3:0.5:0.7:0.5:(0.8-1.2):(6-10).

4. The textile composite material for tufted carpet backing according to claim 2, characterized in that, The catalyst is a mixture of thiophosphonate, 2,4-bis(trifluoromethyl)phenylboronic acid, phosphorous acid, and thiophosphoramide in a mass ratio of 1:(0.8-1.2):2:(0.8-1); the high-boiling solvent is dimethyl sulfoxide; the inert gas is any one of nitrogen, helium, neon, and argon.

5. The textile composite material for tufted carpet backing according to claim 1, characterized in that, The preparation method of the functional synthetic fiber includes the following steps: mixing each component evenly to obtain a mixed material, adding the mixed material into a melt spinning machine for melt spinning, and then successively carrying out washing with clear water and drying to make the functional synthetic fiber; the process parameters of the melt spinning are: spinning temperature 285-295 °C, winding speed 800-1500 m / min, and draw ratio 3.2-4.

2.

6. The textile composite material for tufted carpet backing according to claim 1, characterized in that, The grade of the PA66 resin is 101NC010; the carboxyl-modified nano filler is carboxylated multi-walled carbon nanotubes with a particle size of 8 nm and a length of 10 - 30 μm; the length of the bamboo fiber is 38 - 51 mm and the fineness is 1.5 - 2.5 dtex; the aramid fiber is aramid 1313 fiber with a length of 38 - 51 mm and a fineness of 1.5 - 2.5 dtex; the polyester fiber is PET fiber with a length of 38 - 51 mm and a fineness of 1.5 - 2.5 dtex.

7. A method for preparing a textile composite material for a tufted carpet backing according to any one of claims 1-6, characterized in that, It includes the following steps: mixing bamboo original fiber, aramid fiber, polyester fiber, and functional synthetic fiber in proportion, and making a fiber web through the processes of opening, carding, and web laying; carrying out hydroentangling reinforcement on the fiber web; drying and heat setting the hydroentangled fiber web to obtain a textile composite material for tufted carpet backing.

8. The preparation method of the textile composite material for the tufted carpet backing according to claim 7, characterized in that, The hydroentangling pressure for the hydroentangling reinforcement is 100-150 bar, and the number of hydroentangling passes is 3-5; the drying temperature is 110-130 °C, the heat setting temperature is 150-170 °C, and the heat setting time is 1-2 min.

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