A nanocomposite woven cloth material and a preparation method and application thereof

Abstract

The application relates to the technical field of building functional materials, in particular to a nano-composite woven cloth material and a preparation method and application thereof. The homo-polypropylene is nano-modified through graphene nanofibers and nano fillers, and further, a composite stabilizer and a dispersant are adopted to disperse the graphene nanofibers and the nano fillers, so that the graphene nanofibers and the nano fillers are uniformly dispersed in the homo-polypropylene and the system is stable to the maximum extent, the low-temperature resistance of the homo-polypropylene is improved, the low-temperature brittleness is obviously improved, the homo-polypropylene can normally serve above-45-degree Celsius, and the service life is prolonged. Moreover, the homo-polypropylene well retains the high-temperature resistance in the nano-modification process. The nano-composite woven cloth material provided by the application has good high-temperature resistance and low-temperature resistance, realizes stable service in the ambient temperature in daily life, achieves the effect of "full-temperature-domain" service, and provides a general functional material for the building field.

Description

Technical Field

[0001] This invention relates to the field of building functional materials technology, and in particular to a nanocomposite woven fabric material, its preparation method, and its application. Background Technology

[0002] With the continuous development of the construction industry, personalized buildings are becoming increasingly common in production and daily life, such as passive buildings, high-temperature environment buildings, low-temperature environment buildings, and other engineering buildings. Among them, high-temperature environment buildings and low-temperature environment buildings usually require the introduction of heat-resistant functional materials to significantly improve the building's high-temperature or low-temperature resistance, extend its service life, and significantly improve the living experience of residents, meeting people's increasingly diverse housing needs.

[0003] Given the above background, engineers employ different designs and material selections to adapt to the environmental characteristics of different regions. For example, in cold regions like Northeast China, winter and nighttime temperatures are very low, requiring buildings to operate under low-temperature conditions and necessitating the use of more low-temperature resistant materials. In rainy southern regions with high summer temperatures, buildings need to operate under high-temperature and high-humidity conditions, requiring the use of high-temperature resistant and water-resistant materials. However, while selecting different functional materials for different environments solves the problem of varying building requirements under different conditions, some issues still arise in practical engineering. For instance, different material selections require architectural designers and construction workers to consider more factors, introducing more variables into the design and construction processes and further increasing the complexity of architectural design and construction.

[0004] However, most existing building heat-resistant materials only possess low-temperature resistance or high-temperature resistance; building materials that possess both high-temperature and low-temperature resistance are rare. For example, polypropylene typically has a melting point of 164-170 degrees Celsius and an embrittlement temperature of -35 degrees Celsius. In frigid regions like Northeast China, its brittleness increases under low-temperature conditions, making it unsuitable for service under low-temperature conditions.

[0005] Therefore, developing a full-temperature-range functional material that is both resistant to high and low temperatures for use in the construction field can better meet the practical needs of the construction industry and has important application prospects and value. Summary of the Invention

[0006] In view of this, the present invention provides a nanocomposite woven fabric material, its preparation method and application. The nanocomposite woven fabric material provided by the present invention has both high temperature resistance and low temperature resistance, and can achieve service function in the whole temperature range.

[0007] This invention provides a nanocomposite woven fabric material, which is prepared from a mixture comprising the following components in parts by weight: 100 parts homopolymer polypropylene, 8.2-13.7 parts graphene nanofibers, 10-13 parts nanofiller, 6-9 parts composite stabilizer, 2-5 parts dispersant, 5.5-8 parts plasticizer, and 1-2 parts antioxidant.

[0008] Preferably, the diameter of the graphene nanofibers is 10 to 100 nanometers.

[0009] Preferably, the length of the graphene nanofibers is 100-200 mm.

[0010] Preferably, the nanofiller includes boron nitride nanoparticles and calcium carbonate nanoparticles; the diameter of the boron nitride nanoparticles is 1~100 nanometers; the diameter of the calcium carbonate nanoparticles is 1~100 nanometers; and the mass ratio of boron nitride nanoparticles to calcium carbonate nanoparticles is 32~35:12~16.

[0011] Preferably, the composite stabilizer comprises maleic anhydride-grafted polypropylene and a silane coupling agent; the mass ratio of maleic anhydride-grafted polypropylene to silane coupling agent is 10:6~8.

[0012] Preferably, the silane coupling agent includes one or both of silane coupling agent KH-550 and silane coupling agent KH-792.

[0013] The present invention also provides a method for preparing the nanocomposite woven fabric material described above, comprising the following steps: (1) Homopolymer polypropylene, nanofiller and dispersant are premixed to obtain a premix; (2) The premix is ​​mixed with graphene nanofibers, composite stabilizer, plasticizer and antioxidant to obtain a mixture; (3) The mixture is melted and extruded, cut, stretched, shaped, cooled and woven to obtain nanocomposite woven fabric material.

[0014] Preferably, the barrel temperature zone of the melt extrusion has four temperature zones, specifically a feeding section, a melting section, a mixing section, and a homogenization section; the temperature of the feeding section is 140~160 degrees Celsius; the temperature of the melting section is 170~190 degrees Celsius; the temperature of the mixing section is 200~220 degrees Celsius; the temperature of the homogenization section is 160~180 degrees Celsius; and the die head temperature of the melt extrusion is 170~190 degrees Celsius.

[0015] Preferably, the screw speed for melt extrusion is 80~100 rpm.

[0016] The present invention also provides the application of the nanocomposite woven fabric material described above in the field of construction.

[0017] Compared with the prior art, the present invention has achieved the following beneficial effects: The nanocomposite woven fabric material provided by this invention uses homopolymer polypropylene as the base raw material. The homopolymer polypropylene is nanomodified using graphene nanofibers and nanofillers. Further, composite stabilizers and dispersants are used to disperse the graphene nanofibers and nanofillers, maximizing their uniform dispersion and system stability within the homopolymer polypropylene. Subsequently, plasticizers and antioxidants further modify the system, ultimately improving the low-temperature resistance of the homopolymer polypropylene, significantly reducing its low-temperature brittleness, allowing it to operate normally above -45 degrees Celsius, thus extending its service life. Furthermore, the homopolymer polypropylene retains its high-temperature resistance well during the nanomodification process. Through the above components and nanomodification, the nanocomposite woven fabric material provided by this invention possesses both excellent high-temperature and low-temperature resistance, achieving stable service under ambient temperatures in daily life, achieving a "full temperature range" service effect. This provides a versatile functional material for the construction industry with broad application prospects. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of this invention, the accompanying drawings used in the embodiments of this invention or in the prior art are briefly described below. For those skilled in the art, other drawings can be derived from the following drawings without creative effort, and all such drawings are within the protection scope of this invention.

[0019] Figure 1 The process flow diagram for preparing the nanocomposite woven fabric material provided by the present invention is shown. Detailed Implementation

[0020] This invention provides a nanocomposite woven fabric material, which is prepared from a mixture comprising the following components in parts by weight: 100 parts homopolymer polypropylene, 8.2-13.7 parts graphene nanofibers, 10-13 parts nanofiller, 6-9 parts composite stabilizer, 2-5 parts dispersant, 5.5-8 parts plasticizer, and 1-2 parts antioxidant.

[0021] The raw material for the nanocomposite woven fabric provided by this invention includes 100 parts of homopolymer polypropylene; the homopolymer polypropylene can be Hyosung PP HJ800R impact-resistant injection molding grade polypropylene homopolymer from South Korea. In a specific embodiment of this invention, the homopolymer polypropylene was purchased from Shanghai Jinsuda Plastics Co., Ltd.

[0022] The raw materials of the nanocomposite woven fabric provided by the present invention include 8.2 to 13.7 parts of graphene nanofibers, specifically 9.5, 10, 11.5 or 12.4 parts.

[0023] In this invention, the diameter of the graphene nanofibers can be 10 to 100 nanometers, specifically 50 nanometers or 70 nanometers.

[0024] In this invention, the length of the graphene nanofibers can be 100-200 mm, specifically 150 mm.

[0025] The raw materials of the nanocomposite woven fabric material provided by the present invention include 10 to 13 parts of nanofiller, specifically 10.5 parts, 11 parts, 11.5 parts, 12 parts or 12.5 parts.

[0026] In this invention, the nanofiller may include boron nitride nanoparticles and calcium carbonate nanoparticles; the diameter of the boron nitride nanoparticles may be 1~100 nanometers; the diameter of the calcium carbonate nanoparticles may be 1~100 nanometers; the mass ratio of boron nitride nanoparticles to calcium carbonate nanoparticles may be 32~35:12~16, specifically 33:15 or 34:13.

[0027] The raw materials of the nanocomposite woven fabric material provided by the present invention include 6 to 9 parts of composite stabilizer, specifically 7 or 8 parts.

[0028] In this invention, the composite stabilizer may include maleic anhydride-grafted polypropylene and a silane coupling agent; the mass ratio of maleic anhydride-grafted polypropylene and silane coupling agent may be 10:6~8, specifically 10:7.

[0029] In this invention, the silane coupling agent may include one or both of silane coupling agent KH-550 and silane coupling agent KH-792.

[0030] The raw materials of the nanocomposite woven fabric material provided by the present invention include 2 to 5 parts of dispersant, specifically 3 or 4 parts.

[0031] In this invention, the dispersant can be sodium dodecyl sulfate.

[0032] The raw materials of the nanocomposite woven fabric provided by the present invention include 5.5 to 8 parts of plasticizer, specifically 6 parts, 6.5 parts or 7 parts.

[0033] In this invention, the plasticizer may be dibutyl phthalate.

[0034] The raw materials of the nanocomposite woven fabric material provided by the present invention include 1 to 2 parts of antioxidant, specifically 1.3 parts, 1.5 parts or 1.8 parts.

[0035] In this invention, the antioxidant can be antioxidant 1010.

[0036] The present invention also provides a method for preparing the nanocomposite woven fabric material described above, comprising the following steps: (1) Homopolymer polypropylene, nanofiller and dispersant are premixed to obtain a premix; (2) The premix is ​​mixed with graphene nanofibers, composite stabilizer, plasticizer and antioxidant to obtain a mixture; (3) The mixture is melted and extruded, cut, stretched, shaped, cooled and woven to obtain nanocomposite woven fabric material.

[0037] The preparation process of the nanocomposite woven fabric material provided by this invention is as follows: Figure 1 As shown. This invention premixes homopolymer polypropylene, nanofillers, and dispersants to obtain a premixed material. In this invention, premixing can be achieved by stirring, with a stirring speed of 120-180 rpm, specifically 150 rpm; the premixing temperature can be 80-90 degrees Celsius, specifically 85 degrees Celsius; and the premixing time can be 5-20 minutes, specifically 10 minutes or 15 minutes.

[0038] After obtaining the premix, the present invention mixes the premix with graphene nanofibers, composite stabilizers, plasticizers, and antioxidants to obtain a mixture. In the present invention, the mixing temperature can be 60~80 degrees Celsius, specifically 70 degrees Celsius; the mixing time can be 10~20 minutes, specifically 15 minutes; the mixing can be by stirring, and the stirring speed can be 100~150 rpm, specifically 120 rpm or 130 rpm.

[0039] After obtaining the mixture, the present invention melts and extrudes the mixture, cuts, stretches, shapes, cools, and weaves it to obtain a nanocomposite woven fabric material. In this invention, the melt extrusion equipment can be a twin-screw extruder; the melt extrusion barrel temperature zone can have four temperature zones, specifically a feeding section, a melting section, a mixing section, and a homogenizing section; the temperature of the feeding section can be 140~160 degrees Celsius, specifically 145 degrees Celsius, 150 degrees Celsius, or 155 degrees Celsius; the temperature of the melting section can be 170~190 degrees Celsius, specifically 175 degrees Celsius, 180 degrees Celsius, or 185 degrees Celsius; the temperature of the mixing section can be 200~220 degrees Celsius, specifically 205 degrees Celsius, 210 degrees Celsius, or 215 degrees Celsius; the temperature of the homogenizing section can be 160~180 degrees Celsius, specifically 165 degrees Celsius, 170 degrees Celsius, or 175 degrees Celsius; and the die temperature of the melt extrusion can be 170~190 degrees Celsius, specifically 175 degrees Celsius, 180 degrees Celsius, or 185 degrees Celsius.

[0040] In this invention, the screw speed of melt extrusion can be 80~100 rpm, specifically 85 rpm, 90 rpm or 95 rpm.

[0041] In this invention, the stretching temperature can be 90 to 105 degrees Celsius, specifically 95 degrees Celsius or 100 degrees Celsius; the stretching ratio can be 4 to 6 times, specifically 4.5 times, 5 times or 5.5 times.

[0042] In this invention, the final cooling temperature can be room temperature.

[0043] In this invention, the weaving equipment can be a circular loom.

[0044] The present invention also provides the application of the nanocomposite woven fabric material described above in the field of construction.

[0045] The nanocomposite woven fabric material provided by this invention has both high temperature resistance and low temperature resistance, enabling it to function in the entire temperature range. It is suitable for use in the construction field, extending the service life of building materials. It has broad application prospects and significant economic and social benefits.

[0046] To further illustrate the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and embodiments.

[0047] In a specific embodiment of the present invention, the homopolymer polypropylene is Hyosung PP HJ800R impact-resistant injection molding grade polypropylene homopolymer from South Korea; the graphene nanofibers have a diameter distribution of 10-100 nm and a length distribution of 100-200 mm; the nanofillers are boron nitride nanoparticles and calcium carbonate nanoparticles, with the boron nitride nanoparticles having a diameter distribution of 25-100 nm and the calcium carbonate nanoparticles having a diameter distribution of 10-100 nm; the composite stabilizer is maleic anhydride-grafted polypropylene and a silane coupling agent; the dispersant is sodium dodecyl sulfate; the plasticizer is dibutyl phthalate; and the antioxidant is antioxidant 1010.

[0048] Example 1: This embodiment prepares a nanocomposite woven fabric material. The raw material formulation and preparation steps are as follows: 1) Raw material formula: The composition includes 100 parts homopolymer polypropylene, 13.7 parts graphene nanofibers, 12 parts nanofiller (boron nitride nanoparticles and calcium carbonate nanoparticles in a mass ratio of 33:15), 8 parts composite stabilizer (maleic anhydride grafted polypropylene and silane coupling agent KH-550 in a mass ratio of 10:6.5), 4.5 parts dispersant, 7 parts plasticizer, and 2 parts antioxidant.

[0049] 2) Preparation steps: Accurately weigh the homopolymer polypropylene, nanofiller, and dispersant, and mix them at 85 degrees Celsius for 15 minutes with the stirring speed set to 150 rpm to obtain the premix.

[0050] Accurately weigh the graphene nanofibers, composite stabilizer, plasticizer, and antioxidant. Mix the resulting premix with the graphene nanofibers, composite stabilizer, plasticizer, and antioxidant at 70 degrees Celsius for 15 minutes. Set the stirring speed to 120 rpm to obtain the mixture.

[0051] The obtained mixture was melt-extruded using a twin-screw extruder. The melt extrusion barrel temperature zones were divided into a feeding section, a melting section, a mixing section, and a homogenization section. The temperature of the feeding section was 160 degrees Celsius, the temperature of the melting section was 185 degrees Celsius, the temperature of the mixing section was 220 degrees Celsius, the temperature of the homogenization section was 180 degrees Celsius, the die head temperature was 190 degrees Celsius, and the screw speed was 100 rpm. The mixture was then cut, stretched 6 times at 105 degrees Celsius, shaped, cooled, and woven on a circular loom to obtain a nanocomposite woven fabric material.

[0052] Example 2: This embodiment prepares a nanocomposite woven fabric material. The raw material formulation and preparation steps are as follows: 1) Raw material formula: The composition includes 100 parts homopolymer polypropylene, 11.2 parts graphene nanofibers, 11 parts nanofiller (boron nitride nanoparticles and calcium carbonate nanoparticles in a mass ratio of 33:13), 7 parts composite stabilizer (maleic anhydride grafted polypropylene and silane coupling agent KH-550 in a mass ratio of 10:7.5), 4 parts dispersant, 6 parts plasticizer, and 1 part antioxidant.

[0053] 2) Preparation steps: Accurately weigh the homopolymer polypropylene, nanofiller, and dispersant, and mix them at 85 degrees Celsius for 15 minutes with the stirring speed set to 150 rpm to obtain the premix.

[0054] Accurately weigh the graphene nanofibers, composite stabilizer, plasticizer, and antioxidant. Mix the resulting premix with the graphene nanofibers, composite stabilizer, plasticizer, and antioxidant at 70 degrees Celsius for 15 minutes. Set the stirring speed to 120 rpm to obtain the mixture.

[0055] The obtained mixture was melt-extruded using a twin-screw extruder. The melt extrusion barrel temperature zones were divided into a feeding section, a melting section, a mixing section, and a homogenization section. The temperature of the feeding section was 140 degrees Celsius, the temperature of the melting section was 170 degrees Celsius, the temperature of the mixing section was 200 degrees Celsius, the temperature of the homogenization section was 165 degrees Celsius, the die head temperature was 185 degrees Celsius, and the screw speed was 90 rpm. The mixture was then cut, stretched 4.5 times at 100 degrees Celsius, shaped, cooled, and woven on a circular loom to obtain a nanocomposite woven fabric material.

[0056] Example 3: This embodiment prepares a nanocomposite woven fabric material. The raw material formulation and preparation steps are as follows: 1) Raw material formula: The composition includes 100 parts homopolymer polypropylene, 12.5 parts graphene nanofibers, 12.5 parts nanofiller (boron nitride nanoparticles and calcium carbonate nanoparticles in a mass ratio of 33:15), 8 parts composite stabilizer (maleic anhydride grafted polypropylene and silane coupling agent KH-550 in a mass ratio of 10:7), 3 parts dispersant, 5.5 parts plasticizer, and 1.5 parts antioxidant.

[0057] 2) Preparation steps: Accurately weigh the homopolymer polypropylene, nanofiller, and dispersant, and mix them at 85 degrees Celsius for 15 minutes with the stirring speed set to 150 rpm to obtain the premix.

[0058] Accurately weigh the graphene nanofibers, composite stabilizer, plasticizer, and antioxidant. Mix the resulting premix with the graphene nanofibers, composite stabilizer, plasticizer, and antioxidant at 70 degrees Celsius for 15 minutes. Set the stirring speed to 120 rpm to obtain the mixture.

[0059] The obtained mixture was melt-extruded using a twin-screw extruder. The barrel temperature zones of the melt extrusion were divided into a feeding section, a melting section, a mixing section, and a homogenization section. The temperature of the feeding section was 160 degrees Celsius, the temperature of the melting section was 180 degrees Celsius, the temperature of the mixing section was 200 degrees Celsius, the temperature of the homogenization section was 170 degrees Celsius, the die head temperature was 180 degrees Celsius, and the screw speed was 100 rpm. The mixture was then cut, stretched four times at 90 degrees Celsius, shaped, cooled, and woven on a circular loom to obtain a nanocomposite woven fabric material.

[0060] Example 4: This embodiment prepares a nanocomposite woven fabric material. The raw material formulation and preparation steps are as follows: 1) Raw material formula: The composition includes 100 parts homopolymer polypropylene, 8.2 parts graphene nanofibers, 10 parts nanofiller (boron nitride nanoparticles and calcium carbonate nanoparticles in a mass ratio of 33:14), 8.5 parts composite stabilizer (maleic anhydride grafted polypropylene and silane coupling agent KH-550 in a mass ratio of 10:7), 4 parts dispersant, 8 parts plasticizer, and 2 parts antioxidant.

[0061] 2) Preparation steps: Accurately weigh the homopolymer polypropylene, nanofiller, and dispersant, and mix them at 85 degrees Celsius for 15 minutes with the stirring speed set to 150 rpm to obtain the premix.

[0062] Accurately weigh the graphene nanofibers, composite stabilizer, plasticizer, and antioxidant. Mix the resulting premix with the graphene nanofibers, composite stabilizer, plasticizer, and antioxidant at 70 degrees Celsius for 15 minutes. Set the stirring speed to 120 rpm to obtain the mixture.

[0063] The resulting mixture was melt-extruded using a twin-screw extruder. The melt extrusion barrel was divided into a feeding section, a melting section, a mixing section, and a homogenization section. The temperature of the feeding section was 150 degrees Celsius, the temperature of the melting section was 175 degrees Celsius, the temperature of the mixing section was 210 degrees Celsius, the temperature of the homogenization section was 170 degrees Celsius, the die head temperature was 180 degrees Celsius, and the screw speed was 90 rpm. The mixture was then cut, stretched 5.5 times at 95 degrees Celsius, shaped, cooled, and woven on a circular loom to obtain a nanocomposite woven fabric material.

[0064] Example 5: This embodiment prepares a nanocomposite woven fabric material. The raw material formulation and preparation steps are as follows: 1) Raw material formula: The composition includes 100 parts homopolymer polypropylene, 10.5 parts graphene nanofibers, 13 parts nanofiller (boron nitride nanoparticles and calcium carbonate nanoparticles in a mass ratio of 33:15), 6.5 parts composite stabilizer (maleic anhydride grafted polypropylene and silane coupling agent KH-792 in a mass ratio of 10:8), 3 parts dispersant, 7 parts plasticizer, and 1 part antioxidant.

[0065] 2) Preparation steps: Accurately weigh the homopolymer polypropylene, nanofiller, and dispersant, and mix them at 85 degrees Celsius for 15 minutes with the stirring speed set to 150 rpm to obtain the premix.

[0066] Accurately weigh the graphene nanofibers, composite stabilizer, plasticizer, and antioxidant. Mix the resulting premix with the graphene nanofibers, composite stabilizer, plasticizer, and antioxidant at 70 degrees Celsius for 15 minutes. Set the stirring speed to 120 rpm to obtain the mixture.

[0067] The obtained mixture was melt-extruded using a twin-screw extruder. The melt extrusion barrel temperature zones were divided into a feeding section, a melting section, a mixing section, and a homogenization section. The temperature of the feeding section was 150 degrees Celsius, the temperature of the melting section was 170 degrees Celsius, the temperature of the mixing section was 200 degrees Celsius, the temperature of the homogenization section was 160 degrees Celsius, the die head temperature was 170 degrees Celsius, and the screw speed was 90 rpm. The mixture was then cut, stretched 5 times at 95 degrees Celsius, shaped, cooled, and woven on a circular loom to obtain a nanocomposite woven fabric material.

[0068] Comparative Example 1: The preparation method of this comparative example is the same as that of Example 1, except that no graphene nanofibers were added.

[0069] Comparative Example 2: The preparation method of this comparative example is the same as that of Example 1, except that only boron nitride nanoparticles are added to the nanofiller, that is, calcium carbonate nanoparticles are replaced with boron nitride nanoparticles of equal mass.

[0070] Comparative Example 3: The preparation method of this comparative example is the same as that of Example 1, except that only calcium carbonate nanoparticles are added to the nanofiller, that is, boron nitride nanoparticles are replaced with an equal mass of calcium carbonate nanoparticles.

[0071] Comparative Example 4: The preparation method of this comparative example is the same as that of Example 1, except that the composite stabilizer is only added with maleic anhydride-grafted polypropylene, that is, the silane coupling agent is replaced with an equal mass of maleic anhydride-grafted polypropylene.

[0072] Comparative Example 5: The preparation method of this comparative example is the same as that of Example 1, except that the amount of graphene nanofibers added is 15 parts.

[0073] Comparative Example 6: The preparation method of this comparative example is the same as that of Example 1, except that the amount of nanofiller added is 17 parts.

[0074] Test Example 1: The high-temperature and low-temperature resistance properties of the nanocomposite woven fabrics in Examples 1-5 and Comparative Examples 1-6 were tested, with commercially available polypropylene material used as a control group. The high-temperature resistance test method was as follows: according to GB / T8946-2013 standard, the samples were treated in a 90℃ oven for 1 hour, and the presence of adhesion or melting marks was checked. The low-temperature resistance test method was as follows: referring to national standard GB / T1843-2008, samples were prepared, and cantilever beam impact strength tests were conducted at -30℃. The test results are shown in Table 1.

[0075] Table 1. High temperature and low temperature resistance of Examples 1-5 and Comparative Examples 1-6:

[0076] As shown in Table 1, the nanocomposite woven fabric material provided by this invention possesses excellent low-temperature resistance while retaining its high-temperature resistance without significant degradation. This allows the nanocomposite woven fabric material of this invention to simultaneously meet the performance requirements of both cold and hot regions, making it suitable for use in the construction field in these areas, extending the service life of buildings, and offering better versatility, thus facilitating construction projects. Compared to Comparative Examples 1-6, it can be seen that this invention uses graphene nanofibers and nanofillers to nanomodify the nanocomposite woven fabric material, and employs a composite stabilizer and dispersant system to maintain the stability and uniformity of the nanomodification system, providing a good guarantee for the effectiveness of the nanomodification.

[0077] The embodiments of the present invention have been described above; however, these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. All other embodiments obtained by those skilled in the art based on the above embodiments of the present invention without inventive effort are within the protection scope of the present invention.

Claims

1. A nanocomposite woven fabric material, characterized in that, The mixture is prepared from the following components in parts by weight: 100 parts homopolymer polypropylene, 8.2-13.7 parts graphene nanofibers, 10-13 parts nanofiller, 6-9 parts composite stabilizer, 2-5 parts dispersant, 5.5-8 parts plasticizer and 1-2 parts antioxidant.

2. The nanocomposite woven fabric material according to claim 1, characterized in that, The diameter of graphene nanofibers is 10~100 nanometers; the length of graphene nanofibers is 100~200 millimeters.

3. The nanocomposite woven fabric material according to claim 1, characterized in that, The nanofillers include boron nitride nanoparticles and calcium carbonate nanoparticles; the diameter of the boron nitride nanoparticles is 1~100 nanometers; the diameter of the calcium carbonate nanoparticles is 1~100 nanometers.

4. The nanocomposite woven fabric material according to claim 3, characterized in that, The mass ratio of boron nitride nanoparticles to calcium carbonate nanoparticles is 32~35:12~16.

5. The nanocomposite woven fabric material according to claim 1, characterized in that, The composite stabilizer includes maleic anhydride-grafted polypropylene and silane coupling agent; the mass ratio of maleic anhydride-grafted polypropylene and silane coupling agent is 10:6~8.

6. The nanocomposite woven fabric material according to claim 5, characterized in that, Silane coupling agents include one or both of silane coupling agent KH-550 and silane coupling agent KH-792.

7. A method for preparing a nanocomposite woven fabric material, characterized in that, The nanocomposite woven fabric material is the nanocomposite woven fabric material according to any one of claims 1 to 6, comprising the following steps: (1) Homopolymer polypropylene, nanofiller and dispersant are premixed to obtain a premix; (2) The premix is ​​mixed with graphene nanofibers, composite stabilizer, plasticizer and antioxidant to obtain a mixture; (3) The mixture is melted and extruded, cut, stretched, shaped, cooled and woven to obtain nanocomposite woven fabric material.

8. The method for preparing the nanocomposite woven fabric material according to claim 7, characterized in that, The melt extrusion barrel has four temperature zones: feeding zone, melting zone, mixing zone, and homogenization zone. The temperature of the feeding zone is 140-160 degrees Celsius; the temperature of the melting zone is 170-190 degrees Celsius; the temperature of the mixing zone is 200-220 degrees Celsius; the temperature of the homogenization zone is 160-180 degrees Celsius; and the temperature of the melt extrusion die head is 170-190 degrees Celsius.

9. The method for preparing the nanocomposite woven fabric material according to claim 7, characterized in that, The screw speed for melt extrusion is 80~100 rpm.

10. An application of a nanocomposite woven fabric material in the construction field, characterized in that, The nanocomposite woven fabric material is the nanocomposite woven fabric material according to any one of claims 1 to 6.

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