CN111705501A - Carbon nano material modified ultra-high molecular weight polyethylene fiber and preparation method thereof - Google Patents
Carbon nano material modified ultra-high molecular weight polyethylene fiber and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a carbon nano-material modified ultra-high molecular weight polyethylene fiber and a preparation method thereof. Firstly, carrying out plasma treatment on ultra-high molecular weight polyethylene fibers to generate active functional groups on the surfaces of the ultra-high molecular weight polyethylene fibers; then immersing the carbon nano-fiber into carbon nano-material dispersion liquid with proper content, and uniformly covering the carbon nano-fiber on the surface of the ultra-high molecular weight polyethylene fiber by means of an ultrasonic technology; after drying and removing the solvent, carrying out plasma treatment on the fiber to graft and fix the carbon nano material covered on the surface of the fiber, thereby finishing the modification of the ultra-high molecular weight polyethylene fiber. According to the carbon nano material modified ultra-high molecular weight polyethylene fiber prepared by the method, the carbon nano tube, the graphene or the mixture of the carbon nano tube and the graphene is used as a modified material, so that the surface defects of the ultra-high molecular weight polyethylene fiber are improved, and the strength of the ultra-high molecular weight polyethylene fiber and the interface bonding between the ultra-high molecular weight polyethylene fiber and resin are improved.
Description
Technical Field
The invention relates to a modified polymer fiber and a preparation method thereof, in particular to a carbon nano material modified ultra-high molecular weight polyethylene fiber and a preparation method thereof.
Background
The ultra-high molecular weight polyethylene fiber is a fiber with high crystallinity and high chain segment orientation degree, which is prepared by taking ultra-high molecular weight polyethylene as a raw material. The ultra-high molecular weight polyethylene fiber has the excellent performances of small density, high strength, corrosion resistance, impact resistance, cutting resistance and the like, and has good application prospect in the field of protective composite materials. However, the ultra-high molecular weight polyethylene fiber can generate obvious surface defects during the operation processes of spinning, drafting and the like in the preparation process, as shown in fig. 1, the surface of the ultra-high molecular weight polyethylene fiber has obvious bamboo-like micro-cracks, which causes the reduction of the fiber strength, and the surface of the ultra-high molecular weight polyethylene fiber has strong inertia, extremely poor bonding capability with other high polymer materials and weak interface bonding, thereby greatly influencing the performance improvement of the ultra-high molecular weight polyethylene fiber reinforced composite material.
Chinese patent document CN103572396B discloses a method for preparing a blend modified ultra-high molecular weight polyethylene fiber, which comprises adding a certain proportion of single-walled carbon nanotubes, graphene and nano-silica into a spinning solution to obtain a mixed suspension, and then preparing a modified UHMWPE fiber by processes such as spinning and drafting, thereby improving the wear resistance and creep resistance of the ultra-high molecular weight polyethylene fiber to a certain extent. However, the technology has little effect on improving the surface defects and the reactivity of the fibers, the crystallinity of the fibers can be damaged by adding the nano material into the spinning solution, and the cost of the single-walled carbon nanotube is high, so that the cost of the modified ultrahigh molecular weight polyethylene fibers is greatly increased.
Chinese patent document CN101831802A discloses a method for modifying ultra-high molecular weight polyethylene fiber by ultraviolet irradiation two-step grafting method, which improves the binding capacity between the fiber surface and the polymer matrix by grafting polar substances on the fiber surface. However, the strength of the polar substance grafted on the surface of the ultra-high molecular weight polyethylene fiber by the technology is low, the effect on improving the surface defects of the fiber is not large, and the surface structure of the fiber is damaged to a certain extent, so that the strength of the modified ultra-high molecular weight polyethylene fiber is reduced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a carbon nano material modified ultra-high molecular weight polyethylene fiber, and aims to improve the surface defects and surface inertness of the ultra-high molecular weight polyethylene fiber and improve the strength and surface bonding property of the ultra-high molecular weight polyethylene fiber. The invention also provides a preparation method of the carbon nano material modified ultra-high molecular weight polyethylene fiber.
In order to achieve the purpose, the invention provides the following technical scheme: firstly, carrying out plasma treatment on the ultra-high molecular weight polyethylene fiber to generate active functional groups on the surface of the ultra-high molecular weight polyethylene fiber; then immersing the carbon nano-fiber into carbon nano-material dispersion liquid with proper content, and uniformly covering the carbon nano-fiber on the surface of the ultra-high molecular weight polyethylene fiber by means of an ultrasonic technology; after drying and removing the solvent, carrying out plasma treatment on the fiber to graft and fix the carbon nano material covered on the surface of the fiber, thereby finishing the modification of the ultra-high molecular weight polyethylene fiber and achieving the purpose of the invention.
The invention provides a carbon nano material modified ultra-high molecular weight polyethylene fiber, wherein the carbon nano material is grafted and covered on the surface of the ultra-high molecular weight polyethylene fiber, the carbon nano material is a carbon nano tube, graphene or a mixture of the carbon nano tube and the graphene, and the surface defects and the surface bonding property of UHMWPE fibers are improved by utilizing the excellent nano structure and mechanical property of the carbon nano material.
The invention relates to a preparation method of carbon nano material modified ultra-high molecular weight polyethylene fiber, which comprises the following steps:
(1) carrying out plasma treatment on the ultra-high molecular weight polyethylene fiber for 3-7 min under the atmosphere conditions of 150-250W of power and 5-50% of oxygen content;
(2) dispersing the carbon nano material in a solvent to prepare a dispersion liquid with the concentration of the carbon nano material of 0.2-4 wt%;
(3) putting the ultra-high molecular weight polyethylene fiber treated by the plasma into the carbon nano material dispersion liquid for ultrasonic infiltration;
(4) drying the ultrahigh molecular weight polyethylene fiber with the surface infiltrated with the carbon nano material;
(5) and under the conditions of 150-250W of power and 5-50% of oxygen content, carrying out plasma treatment on the ultrahigh molecular weight polyethylene fiber for 3-7 min again to ensure that the carbon nano material covered on the surface of the ultrahigh molecular weight polyethylene fiber is grafted and fixed with the ultrahigh molecular weight polyethylene fiber.
The invention relates to a preparation method of carbon nano-material modified ultra-high molecular weight polyethylene fiber, which is characterized by comprising the following steps: the atmosphere with the oxygen content of 5-50% is any one of an air atmosphere, an oxygen and nitrogen atmosphere and an oxygen and argon atmosphere.
The invention relates to a preparation method of carbon nano-material modified ultra-high molecular weight polyethylene fiber, which is characterized by comprising the following steps: the carbon nano material is carbon nano tube, graphene or the mixture of the carbon nano tube and the graphene.
The invention relates to a preparation method of carbon nano-material modified ultra-high molecular weight polyethylene fiber, which is characterized by comprising the following steps: the concentration of the carbon nanotubes in the carbon nanotube dispersion liquid is 0.3-3 wt%; the graphene concentration in the graphene dispersion liquid is 0.3-3 wt%; the carbon nanotube concentration in the carbon nanotube and graphene mixed dispersion liquid is 0.1-2 wt%, and the graphene concentration is 0.1-2 wt%.
The invention relates to a preparation method of carbon nano-material modified ultra-high molecular weight polyethylene fiber, which is characterized by comprising the following steps: the carbon nano tube is any one of a single-walled carbon nano tube, a multi-walled carbon nano tube, a carboxylated carbon nano tube, a hydroxylated carbon nano tube or an aminated carbon nano tube; the graphene is any one of graphene oxide, unfunctionalized graphene, carboxylated graphene, hydroxylated graphene or aminated graphene.
The invention relates to a preparation method of carbon nano-material modified ultra-high molecular weight polyethylene fiber, which is characterized by comprising the following steps: the solvent is any one of water, N-methyl pyrrolidone and N-methyl pyrrolidone.
The invention relates to a preparation method of carbon nano-material modified ultra-high molecular weight polyethylene fiber, which is characterized by comprising the following steps: the ultrasonic power of the ultrasonic infiltration is 200W, the frequency is 40KHz, and the time is 5-15 min.
The invention relates to a carbon nano-material modified ultra-high molecular weight polyethylene fiber, which is characterized in that: the surface of the carbon nano material is grafted and covered with the carbon nano material, and the content of the carbon nano material is 0.08-0.79 wt%.
The preparation method of the carbon nano material modified ultra-high molecular weight polyethylene fiber successfully and stably covers the surface of the ultra-high molecular weight polyethylene fiber with the carbon nano tube or the graphene in a grafting manner, improves the surface defects of the fiber, improves the strength of the ultra-high molecular weight polyethylene fiber, improves the surface bonding property of the fiber by utilizing the high surface energy and the mechanical anchoring effect of the carbon nano tube or the graphene, and is simple in process, green and environment-friendly. In addition, the product of the invention is applied to the polymer matrix composite material, can further exert the reinforcing efficiency of the ultra-high molecular weight polyethylene fiber, and improves the mechanical property and the protective property of the composite material.
Drawings
Fig. 1 is a surface topography diagram of an ultra-high molecular weight polyethylene fiber protofilament.
FIG. 2 is a surface topography of the carbon nanotube-modified UHMWPE fiber of example 1.
Fig. 3 is a surface topography of the carbon nanotube and graphene hybrid modified ultra-high molecular weight polyethylene fiber of example 2.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the following embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Test methods in which specific conditions are not specified in the following examples were selected in accordance with conventional methods and conditions, or in accordance with commercial instructions.
In the following examples, the ultra-high molecular weight polyethylene fiber was purchased from Beijing Hokkaizhong specialty fiber technology development Co., Ltd, product number 700D; various types of carbon nanotube or graphene dispersions are purchased from Nannence science and technology Limited of the Chengdu province of Chinese academy of sciences.
Testing the tensile property of the fiber reinforced composite material: and testing the tensile property of the composite material according to the national standard GB/T1447-2005 by using a PLW-300 type dynamic and static universal testing machine.
Example 1
50g of ultra-high molecular weight polyethylene fiber tows are placed in a plasma treatment box and treated for 3min under the conditions of 175W of power and air atmosphere.
Diluting aqueous dispersion TNMN2 of carbon nanotubes with deionized water until the concentration of carbon nanotubes is 1 wt%.
And immersing the ultra-high molecular weight polyethylene fiber subjected to plasma treatment in the prepared carbon nanotube dispersion liquid, and carrying out ultrasonic infiltration for 5min under the conditions of 200W of power and 40KHz of frequency.
And taking out the sample after the infiltration is finished, drying the sample for 30min at the temperature of 60 ℃, and removing the solvent on the surface of the sample.
And taking out the dried sample, putting the sample into the plasma treatment box again, and treating for 3min under the conditions of 175W power and air atmosphere.
After the plasma treatment was completed, a sample of the ultra-high molecular weight polyethylene fiber was taken out and weighed 50.175g, so that the content of the carbon nanotube was 0.35%.
The surface of the ultra-high molecular weight polyethylene fiber modified by the carbon nano tube is characterized by a scanning electron microscope, and the result is shown in figure 2, compared with the unmodified ultra-high molecular weight polyethylene fiber, the carbon nano tube on the surface of the fiber is uniformly dispersed, and the microscopic defects on the surface of the fiber are improved to a certain extent through bridging and lapping and effective combination of the carbon nano tube and the surface of the fiber.
The carbon nano tube modified ultra-high molecular weight polyethylene fiber and the low density polyethylene matrix are compounded and molded to prepare the composite material, and the molding process comprises the following steps: the temperature is 120 ℃, the pressure is 18MPa, and the molding time is 30 min.
The tensile property of the modified ultrahigh molecular weight polyethylene fiber composite material prepared by the implementation method is tested by using a PLW-300 type dynamic and static universal testing machine according to the national standard GB/T1447-.
Example 2
50g of ultra-high molecular weight polyethylene fiber tows are placed in a plasma treatment box and treated for 3min under the conditions of 175W of power and air atmosphere.
Diluting the carbon nanotube dispersion liquid TNMN2 with deionized water until the concentration of the carbon nanotubes is 0.5wt%, diluting the graphene dispersion liquid TNWPRGO until the concentration of the graphene is 0.5wt%, and uniformly mixing the two to obtain the carbon nanotube and graphene mixed dispersion liquid.
Immersing the ultra-high molecular weight polyethylene fiber treated by the plasma into the prepared mixed dispersion liquid of the carbon nano tube and the graphene, and carrying out ultrasonic infiltration for 10min under the conditions of 200W of power and 40KHz of frequency.
And taking out the sample after the infiltration is finished, drying the sample for 30min at the temperature of 60 ℃, and removing the solvent on the surface of the sample.
And taking out the dried sample, putting the sample into the plasma treatment box again, and treating for 3min under the conditions of 175W power and air atmosphere.
After the plasma treatment was completed, a sample of the ultra-high molecular weight polyethylene fiber was taken out and weighed 50.14g, and the content of the carbon nanomaterial was 0.28%.
The surface of the ultra-high molecular weight polyethylene fiber modified by mixing the carbon nano tube and the graphene is characterized by a scanning electron microscope, and the result is shown in figure 3, compared with the unmodified ultra-high molecular weight polyethylene fiber, the carbon nano material on the surface of the fiber is uniformly dispersed, and the microscopic defects on the surface of the fiber are improved to a certain extent through bridging and lapping of the carbon nano tube, covering of the graphene and effective combination of the carbon nano material and the surface of the fiber.
The carbon nano material modified ultra-high molecular weight polyethylene fiber and the low density polyethylene matrix are compounded and molded to prepare the composite material, and the molding process comprises the following steps: the temperature is 120 ℃, the pressure is 18MPa, and the molding time is 30 min.
The tensile property of the modified ultrahigh molecular weight polyethylene fiber composite material prepared by the implementation method is tested by using a PLW-300 type dynamic and static universal testing machine according to the national standard GB/T1447-.
Example 3
50g of ultra-high molecular weight polyethylene fiber tows are placed in a plasma treatment box and treated for 3min under the conditions of 150W power and air atmosphere.
And diluting the aqueous dispersion liquid TNWDM-M8 of the carbon nano tubes by using deionized water until the concentration of the carbon nano tubes is 0.3 wt%.
And immersing the ultra-high molecular weight polyethylene fiber subjected to plasma treatment in the prepared carbon nanotube dispersion liquid, and carrying out ultrasonic infiltration for 5min under the conditions of 200W of power and 40KHz of frequency.
And taking out the sample after the infiltration is finished, drying the sample for 30min at the temperature of 60 ℃, and removing the solvent on the surface of the sample.
And taking out the dried sample, putting the sample into the plasma treatment box again, and treating for 3min under the conditions of power of 150W and air atmosphere.
After the plasma treatment was completed, a sample of the ultra-high molecular weight polyethylene fiber was taken out and weighed 50.05g, so that the content of the carbon nanotube was 0.1%.
The carbon nano tube modified ultra-high molecular weight polyethylene fiber and the low density polyethylene matrix are compounded and molded to prepare the composite material, and the molding process comprises the following steps: the temperature is 120 ℃, the pressure is 18MPa, and the molding time is 30 min.
The tensile property of the modified ultrahigh molecular weight polyethylene fiber composite material prepared by the implementation method is tested by using a PLW-300 type dynamic and static universal testing machine according to the national standard GB/T1447-.
Example 4
50g of ultra-high molecular weight polyethylene fiber tows are placed in a plasma treatment box and treated for 7min under the conditions of 250W power and an oxygen and argon atmosphere with the oxygen content of 5 percent.
And diluting the aqueous dispersion liquid TNWDM-M8 of the carbon nano tubes by using deionized water until the concentration of the carbon nano tubes is 3 wt%.
And immersing the ultra-high molecular weight polyethylene fiber subjected to plasma treatment in the prepared carbon nanotube dispersion liquid, and carrying out ultrasonic infiltration for 15min under the conditions of 200W of power and 40KHz of frequency.
And taking out the sample after the infiltration is finished, drying the sample for 30min at the temperature of 60 ℃, and removing the solvent on the surface of the sample.
And taking out the dried sample, putting the dried sample into the plasma treatment box again, and treating for 3min under the conditions of 250W power and 5% oxygen and argon atmosphere.
After the plasma treatment was completed, a sample of the ultra-high molecular weight polyethylene fiber was taken out and weighed 50.395g, so that the content of the carbon nanotube was 0.79%.
The carbon nano tube modified ultra-high molecular weight polyethylene fiber and the low density polyethylene matrix are compounded and molded to prepare the composite material, and the molding process comprises the following steps: the temperature is 120 ℃, the pressure is 18MPa, and the molding time is 30 min.
The tensile property of the modified ultrahigh molecular weight polyethylene fiber composite material prepared by the implementation method is tested by using a PLW-300 type dynamic and static universal testing machine according to the national standard GB/T1447-.
Example 5
50g of ultra-high molecular weight polyethylene fiber tows are placed in a plasma treatment box and treated for 3min under the conditions of 150W power and air atmosphere.
Diluting the graphene aqueous dispersion TNWPRGO with deionized water until the concentration of the graphene is 0.3 wt%.
And immersing the ultra-high molecular weight polyethylene fiber subjected to plasma treatment in the prepared graphene dispersion liquid, and carrying out ultrasonic infiltration for 5min under the conditions of 200W of power and 40KHz of frequency.
And taking out the sample after the infiltration is finished, drying the sample for 30min at the temperature of 60 ℃, and removing the solvent on the surface of the sample.
And taking out the dried sample, putting the dried sample into the plasma treatment box again, and treating for 3min under the conditions of 150W power and air atmosphere.
After the plasma treatment was completed, a sample of ultra-high molecular weight polyethylene fibers was taken out and weighed 50.04g, so that the graphene content was 0.08%.
The graphene modified ultra-high molecular weight polyethylene fiber and the low density polyethylene matrix are compounded and molded to prepare the composite material, and the molding process comprises the following steps: the temperature is 120 ℃, the pressure is 18MPa, and the molding time is 30 min.
The tensile property of the modified ultrahigh molecular weight polyethylene fiber composite material prepared by the implementation method is tested by using a PLW-300 type dynamic and static universal testing machine according to the national standard GB/T1447-.
Example 6
50g of ultra-high molecular weight polyethylene fiber tows are placed in a plasma treatment box and treated for 7min under the conditions of 250W power and an oxygen and nitrogen atmosphere with the oxygen volume content of 5 percent.
Diluting the graphene aqueous dispersion TNWPRGO with deionized water until the concentration of the graphene is 3 wt%.
And immersing the ultra-high molecular weight polyethylene fiber subjected to plasma treatment in the prepared graphene dispersion liquid, and carrying out ultrasonic infiltration for 15min under the conditions of 200W of power and 40KHz of frequency.
And taking out the sample after the infiltration is finished, drying the sample for 30min at the temperature of 60 ℃, and removing the solvent on the surface of the sample.
And taking out the dried sample, putting the dried sample into the plasma treatment box again, and treating for 3min under the conditions of 250W power and 5% oxygen volume content in oxygen and nitrogen atmosphere.
After the plasma treatment was completed, a sample of ultra-high molecular weight polyethylene fibers was taken out, and weighed 50.28g, so that the graphene content was 0.56%.
The graphene modified ultra-high molecular weight polyethylene fiber and the low density polyethylene matrix are compounded and molded to prepare the composite material, and the molding process comprises the following steps: the temperature is 120 ℃, the pressure is 18MPa, and the molding time is 30 min.
The tensile property of the modified ultrahigh molecular weight polyethylene fiber composite material prepared by the implementation method is tested by using a PLW-300 type dynamic and static universal testing machine according to the national standard GB/T1447-.
Example 7
50g of ultra-high molecular weight polyethylene fiber tows are placed in a plasma treatment box and treated for 3min under the conditions of 175W power and oxygen and argon atmosphere with the oxygen volume content of 50 percent.
Diluting the carbon nanotube dispersion liquid TNMN2 with deionized water until the concentration of the carbon nanotubes is 0.1wt%, diluting the graphene dispersion liquid TNWPRGO until the concentration of the graphene is 2wt%, and uniformly mixing the two to obtain the carbon nanotube and graphene mixed dispersion liquid.
Immersing the ultra-high molecular weight polyethylene fiber treated by the plasma into the prepared mixed dispersion liquid of the carbon nano tube and the graphene, and carrying out ultrasonic infiltration for 15min under the conditions of 200W of power and 40KHz of frequency.
And taking out the sample after the infiltration is finished, drying the sample for 30min at the temperature of 60 ℃, and removing the solvent on the surface of the sample.
And taking out the dried sample, putting the dried sample into the plasma treatment box again, and treating for 3min under the conditions of 175W power and oxygen and argon atmosphere with the oxygen volume content of 50%.
After the plasma treatment was completed, a sample of the ultra-high molecular weight polyethylene fiber was taken out and weighed 50.235g, so that the content of the carbon nanomaterial was 0.47%.
The carbon nano material modified ultra-high molecular weight polyethylene fiber and the low density polyethylene matrix are compounded and molded to prepare the composite material, and the molding process comprises the following steps: the temperature is 120 ℃, the pressure is 18MPa, and the molding time is 30 min.
The tensile property of the modified ultrahigh molecular weight polyethylene fiber composite material prepared by the implementation method is tested by using a PLW-300 type dynamic and static universal testing machine according to the national standard GB/T1447-.
Example 8
50g of ultra-high molecular weight polyethylene fiber tows are placed in a plasma treatment box and treated for 3min under the conditions of 175W of power and an oxygen and nitrogen atmosphere with the oxygen volume content of 50 percent.
Diluting the carbon nanotube dispersion liquid TNMN2 with deionized water until the concentration of the carbon nanotubes is 2wt%, diluting the graphene dispersion liquid TNWPRGO until the concentration of the graphene is 0.1wt%, and uniformly mixing the two to obtain the carbon nanotube and graphene mixed dispersion liquid.
Immersing the ultra-high molecular weight polyethylene fiber treated by the plasma into the prepared mixed dispersion liquid of the carbon nano tube and the graphene, and carrying out ultrasonic infiltration for 15min under the conditions of 200W of power and 40KHz of frequency.
And taking out the sample after the infiltration is finished, drying the sample for 30min at the temperature of 60 ℃, and removing the solvent on the surface of the sample.
Taking out the dried sample, putting the sample into a plasma treatment box again, and treating for 3min under the conditions of 175W power and oxygen and nitrogen atmosphere with the oxygen volume content of 50%.
After the plasma treatment was completed, a sample of the ultra-high molecular weight polyethylene fiber was taken out and weighed 50.26g, and the content of the carbon nanomaterial was 0.52%.
The carbon nano material modified ultra-high molecular weight polyethylene fiber and the low density polyethylene matrix are compounded and molded to prepare the composite material, and the molding process comprises the following steps: the temperature is 120 ℃, the pressure is 18MPa, and the molding time is 30 min.
The tensile property of the modified ultrahigh molecular weight polyethylene fiber composite material prepared by the implementation method is tested by using a PLW-300 type dynamic and static universal testing machine according to the national standard GB/T1447-.
Example 9
50g of ultra-high molecular weight polyethylene fiber tows are placed in a plasma treatment box and treated for 3min under the conditions of 175W of power and air atmosphere.
Diluting the graphene aqueous dispersion TNWPRGO with purified water until the graphene concentration is 1 wt%.
And immersing the ultra-high molecular weight polyethylene fiber subjected to plasma treatment in the prepared graphene dispersion liquid, and carrying out ultrasonic infiltration for 10min under the conditions of 200W of power and 40KHz of frequency.
And taking out the sample after the infiltration is finished, drying the sample for 30min at the temperature of 60 ℃, and removing the solvent on the surface of the sample.
And taking out the dried sample, putting the sample into the plasma treatment box again, and treating for 3min under the conditions of 175W power and air atmosphere.
After the plasma treatment was completed, a sample of ultra-high molecular weight polyethylene fibers was taken out and weighed 50.155g, so that the graphene content was 0.31%.
The graphene modified ultra-high molecular weight polyethylene fiber and the low density polyethylene matrix are compounded and molded to prepare the composite material, and the molding process comprises the following steps: the temperature is 120 ℃, the pressure is 18MPa, and the molding time is 30 min.
The tensile property of the modified ultrahigh molecular weight polyethylene fiber composite material prepared by the implementation method is tested by using a PLW-300 type dynamic and static universal testing machine according to the national standard GB/T1447-.
Claims (8)
1. A preparation method of carbon nano material modified ultra-high molecular weight polyethylene fiber comprises the following steps:
(1) treating the ultra-high molecular weight polyethylene fiber for 3-7 min by using plasma under the atmosphere conditions of 150-250W of power and 5-50% of oxygen content;
(2) dispersing the carbon nano material in a solvent to prepare a dispersion liquid with the concentration of the carbon nano material of 0.2-4 wt%;
(3) putting the ultra-high molecular weight polyethylene fiber treated by the plasma into the carbon nano material dispersion liquid for ultrasonic infiltration;
(4) drying the ultrahigh molecular weight polyethylene fiber with the surface infiltrated with the carbon nano material;
(5) and under the conditions of 150-250W of power and 5-50% of oxygen content, carrying out plasma treatment on the ultrahigh molecular weight polyethylene fiber for 3-7 min again to ensure that the carbon nano material covered on the surface of the ultrahigh molecular weight polyethylene fiber is grafted and fixed with the ultrahigh molecular weight polyethylene fiber.
2. The method for preparing the carbon nanomaterial-modified ultra-high molecular weight polyethylene fiber according to claim 1, characterized in that: the atmosphere with the oxygen content of 5-50% is any one of an air atmosphere, an oxygen and nitrogen atmosphere and an oxygen and argon atmosphere.
3. The method for preparing the carbon nanomaterial-modified ultra-high molecular weight polyethylene fiber according to claim 1, characterized in that: the carbon nano material is carbon nano tube, graphene or the mixture of the carbon nano tube and the graphene.
4. The method for preparing the carbon nanomaterial-modified ultra-high molecular weight polyethylene fiber according to claim 3, characterized in that: the concentration of the carbon nanotubes in the carbon nanotube dispersion liquid is 0.3-3 wt%; the graphene concentration in the graphene dispersion liquid is 0.3-3 wt%; the carbon nanotube concentration in the carbon nanotube and graphene mixed dispersion liquid is 0.1-2 wt%, and the graphene concentration is 0.1-2 wt%.
5. The method for preparing the carbon nanomaterial-modified ultra-high molecular weight polyethylene fiber according to claim 3 or 4, characterized in that: the carbon nano tube is any one of a single-walled carbon nano tube, a multi-walled carbon nano tube, a carboxylated carbon nano tube, a hydroxylated carbon nano tube or an aminated carbon nano tube; the graphene is any one of graphene oxide, unfunctionalized graphene, carboxylated graphene, hydroxylated graphene or aminated graphene.
6. The method for preparing the carbon nanomaterial-modified ultra-high molecular weight polyethylene fiber according to claim 1, characterized in that: the solvent is any one of water, N-methyl pyrrolidone and N-methyl pyrrolidone.
7. The method for preparing the carbon nanomaterial-modified ultra-high molecular weight polyethylene fiber according to claim 1, characterized in that: the ultrasonic power of the ultrasonic infiltration is 200W, the frequency is 40KHz, and the time is 5-15 min.
8. A carbon nanomaterial-modified ultra-high molecular weight polyethylene fiber prepared according to the method of claim 1, characterized in that: the surface of the carbon nano material is grafted and covered with the carbon nano material, and the content of the carbon nano material is 0.08-0.79 wt%.
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Cited By (5)
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|---|---|---|---|---|
| CN112267159A (en) * | 2020-11-05 | 2021-01-26 | 江苏锵尼玛新材料股份有限公司 | Polyethylene functional fiber, fabric and preparation method thereof |
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| CN112267159A (en) * | 2020-11-05 | 2021-01-26 | 江苏锵尼玛新材料股份有限公司 | Polyethylene functional fiber, fabric and preparation method thereof |
| CN112376263A (en) * | 2020-11-06 | 2021-02-19 | 湖南中泰特种装备有限责任公司 | Preparation method of ultrahigh molecular weight polyethylene fiber conductive weftless fabric |
| CN113620666A (en) * | 2021-09-07 | 2021-11-09 | 苏州东木轩装饰材料有限公司 | Anti-cracking building material and preparation method thereof |
| CN114059347A (en) * | 2021-12-20 | 2022-02-18 | 浙江千禧龙纤特种纤维股份有限公司 | Surface modification method for improving binding property of ultrahigh molecular weight polyethylene fiber and matrix resin |
| CN114892404A (en) * | 2022-05-25 | 2022-08-12 | 中国人民解放军陆军工程大学 | Method for improving surface wettability of ultra-high molecular weight polyethylene fiber |
| CN114892404B (en) * | 2022-05-25 | 2023-05-12 | 中国人民解放军陆军工程大学 | Method for improving surface wettability of ultra-high molecular weight polyethylene fiber |
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