Micro-nano tear-resistant coated fabric and preparation method thereof

Abstract

The present application relates to a kind of micro-nano tear-resistant film-coated fabric and its preparation method, belong to the technical field of fabric processing, including micro-nano film, base cloth fabric;Micro-nano film is with nanometer film-coated material as raw material, using hot-pressing film-coating process is formed by being combined to base cloth fabric, and nanometer film-coated material is made by polytetrafluoroethylene concentrated dispersion liquid, carbon nanotube, plant micro powder and phthalic anhydride.Polytetrafluoroethylene concentrated dispersion liquid adds carbon nanotube, plant micro powder and phthalic anhydride, on the one hand, increase the viscosity of polytetrafluoroethylene concentrated dispersion liquid, on the one hand, increase the antifouling performance and antibacterial property of polytetrafluoroethylene concentrated dispersion liquid, so that the micro-nano tear-resistant film-coated fabric pressed out using polytetrafluoroethylene concentrated dispersion liquid has better tensile property, while having better antifouling performance and antibacterial property, wherein the gynostemma pentaphyllum stem and leaf powder in plant micro powder contains a large amount of trace elements, can help micro-nano film increase strength.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of fabric processing, and particularly relates to a micro-nano tear-resistant laminated fabric and a preparation method thereof. BACKGROUND

[0002] The laminated fabric refers to a thin film compounded on a base fabric, so that the base fabric has the functions of waterproofness, stain resistance or antibiosis. However, after the base fabric is laminated, repeated washing will cause the base fabric to be separated from the laminated layer, so that the tensile strength is obviously reduced. When the clothes are slightly pulled, the clothes are easily broken, so that the clothes are no longer waterproof, stain resistant and antibacterial, and the wearing life of the clothes is short. SUMMARY

[0003] The application aims to provide a micro-nano tear-resistant laminated fabric and a preparation method thereof to solve the above problems.

[0004] The application achieves the above-mentioned purpose through the following technical scheme.

[0005] The application provides a micro-nano tear-resistant laminated fabric, which comprises a micro-nano film and a base fabric. The micro-nano film is formed by compounding a nano-laminated material on the base fabric through a hot-pressing lamination process. The nano-laminated material is prepared by wrapping carbon nanotubes, plant micro-powder and phthalic anhydride with polytetrafluoroethylene concentrated dispersion liquid.

[0006] The preparation raw materials of the plant micro-powder include 20-35 parts of gynostemma pentaphyllum stem and leaf powder, 10-25 parts of prunella vulgaris stem and leaf powder, 45-60 parts of cinnamomum camphora leaf powder and 80-100 parts of water solution.

[0007] As a further optimization scheme of the application, the preparation process of the gynostemma pentaphyllum stem and leaf powder is as follows: the gynostemma pentaphyllum stem and leaf is subjected to dehydration treatment by a freeze-drying method, and then ground to a particle size of 1-3 nm to stop grinding, so as to obtain the gynostemma pentaphyllum stem and leaf powder. The preparation process of the prunella vulgaris is as follows: the prunella vulgaris stem and leaf is subjected to dehydration treatment by a freeze-drying method, and then ground to a particle size of 1-3 nm to stop grinding, so as to obtain the prunella vulgaris stem and leaf powder. The preparation process of the cinnamomum camphora leaf powder is as follows: the cinnamomum camphora leaf is dried in a room at 15-20 DEG C, and then ground to a particle size of 1-2 nm to stop grinding, so as to obtain the cinnamomum camphora leaf powder.

[0008] As a further optimization scheme of the application, the preparation raw materials of the water solution include 10-20 parts of ammonia water, 35-45 parts of electrolyte water and 2-6 parts of acetic acid.

[0009] As a further optimization scheme of the present application, the preparation process of the aqueous solution is as follows: electrolyte water is injected into a container, ammonia water and acetic acid are added, stirring is carried out at 5-8 DEG C for 40-45 min, and the aqueous solution is obtained.

[0010] The present application also provides a preparation method of the micro-nano tear-resistant coated fabric, comprising the following steps:

[0011] S1, the gynostemma pentaphyllum stem and leaf powder, the spirea anthelmia stem and leaf powder and the cinnamomum camphora leaf powder are mixed, the water solution is added for soaking, the solid material is concentrated by using the evaporation concentration process after soaking for 2-3h, and the plant micro powder is obtained by grinding the solid material;

[0012] S2, the polytetrafluoroethylene concentrated dispersion liquid is heated to 60-80 DEG C, the carbon nanotube, the plant micro powder and the phthalic anhydride are added into the polytetrafluoroethylene concentrated dispersion liquid for stirring, and the nano coating material is obtained after fully mixing;

[0013] S3, the base fabric is laid flat, the nano coating material is compounded to the outer surface of the base fabric by using the hot-pressing coating process, and the micro-nano tear-resistant coated fabric is obtained.

[0014] As a further optimization scheme of the present application, the mass ratio of the polytetrafluoroethylene concentrated dispersion liquid, the carbon nanotube, the plant micro powder and the phthalic anhydride is (2-4) : 5 : (5-8) : 2.

[0015] The present application has the beneficial effects that: the carbon nanotube, the plant micro powder and the phthalic anhydride are added in the polytetrafluoroethylene concentrated dispersion liquid, on the one hand, the viscosity of the polytetrafluoroethylene concentrated dispersion liquid is increased, on the other hand, the antifouling performance and the antibacterial performance of the polytetrafluoroethylene concentrated dispersion liquid are increased, so that the micro-nano tear-resistant coated fabric pressed by using the polytetrafluoroethylene concentrated dispersion liquid has better antifouling performance and antibacterial performance while having better tensile resistance, and the gynostemma pentaphyllum stem and leaf powder in the plant micro powder contains a large amount of trace elements, which can help the micro-nano film to increase the strength, and also has the antibacterial performance and the antifouling performance. DETAILED DESCRIPTION

[0016] It is necessary to point out here that the following detailed description is only used to further illustrate the present application, and cannot be understood as limiting the protection scope of the present application, and the skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0017] I. Materials

[0018] The method used in the present application is the conventional method known by the skilled in the art, and the reagents and materials used are the commercially available products, unless otherwise specified.

[0019] The base fabric in the application is: 20% long cotton, 30% bamboo charcoal fiber, 15% silk fiber and 35% cashmere fiber are spun into a textile machine to obtain the base fabric.

[0020] The preparation process of the gynostemma pentaphyllum stem leaf powder in the application is: taking gynostemma pentaphyllum stem leaves, dehydrating by freeze-drying method, grinding to a particle size of 1-3 nm after dehydration, and stopping grinding, to obtain gynostemma pentaphyllum stem leaf powder;

[0021] The preparation process of the Prunella vulgaris is: taking Prunella vulgaris stem leaves, dehydrating by freeze-drying method, grinding to a particle size of 1-3 nm after dehydration, and stopping grinding, to obtain Prunella vulgaris stem leaf powder;

[0022] The preparation process of the Cinnamomum camphora leaf powder is: taking Cinnamomum camphora leaves, drying in a room at 15-20 DEG C, and then grinding to a particle size of 1-2 nm after stopping grinding, to obtain Cinnamomum camphora leaf powder.

[0023] The preparation method of the polytetrafluoroethylene dispersion concentrate in the application is: using tetrafluoroethylene monomer as raw material to obtain polytetrafluoroethylene dispersion concentrate by emulsion polymerization reaction.

[0024] II. Method

[0025] 2.1 The effect of nano-coating material on the performance of micro-nano tear-resistant coated fabric

[0026] (1) The preparation method of the micro-nano tear-resistant coated fabric is as follows:

[0027] The preparation process of the gynostemma pentaphyllum stem leaf powder is: taking gynostemma pentaphyllum stem leaves, dehydrating by freeze-drying method, grinding to a particle size of 2 nm after dehydration, and stopping grinding, to obtain gynostemma pentaphyllum stem leaf powder;

[0028] The preparation process of the Prunella vulgaris is: taking Prunella vulgaris stem leaves, dehydrating by freeze-drying method, grinding to a particle size of 2 nm after dehydration, and stopping grinding, to obtain Prunella vulgaris stem leaf powder;

[0029] The preparation process of the Cinnamomum camphora leaf powder is: taking Cinnamomum camphora leaves, drying in a room at 18 DEG C, and then grinding to a particle size of 1.5 nm after stopping grinding, to obtain Cinnamomum camphora leaf powder.

[0030] The gynostemma pentaphyllum stem leaf powder, the Prunella vulgaris stem leaf powder and the Cinnamomum camphora leaf powder are mixed, and a water solution is added for soaking, and after soaking for 2-3 h, a solid material is obtained by evaporation concentration process, and the solid material is ground to obtain plant micro powder.

[0031] The polytetrafluoroethylene concentrated dispersion liquid is heated to 70℃, the carbon nanotubes, plant micro powder and phthalic anhydride are added into the polytetrafluoroethylene concentrated dispersion liquid for stirring (the mass ratio of the polytetrafluoroethylene concentrated dispersion liquid, carbon nanotubes, plant micro powder and phthalic anhydride is 3:5:6:2, and the nano-coating material is obtained after fully mixing);

[0032] The base fabric is laid flat, and the nano-coating material is compounded to the outer surface of the base fabric by using a hot pressing coating process, so as to obtain a micro-nano tear-resistant coated fabric.

[0033] The raw materials of the aqueous solution include 10 parts of ammonia water, 40 parts of electrolyte water and 3 parts of acetic acid.

[0034] The raw material composition of the plant micro powder is shown in the following table:

[0035]

[0036] Note: "-" means not added

[0037] (2) The performance of the above micro-nano tear-resistant coated fabric sample is tested by using the following test methods

[0038] ① The samples prepared from Example 1 and Comparative Examples 1-2 are respectively subjected to tensile property testing according to GB / T 3923.2-2013 "Textiles - Determination of tensile properties of fabrics - Part 2: Determination of breaking force - Gripping method".

[0039] ② The samples prepared from Example 1 and Comparative Examples 1-2 are respectively subjected to anti-staining property testing according to GB / T 30159.1-2013 "Textiles - Determination of the antistaining properties - Part 1: Stain resistance".

[0040] ③ According to GB / T 20944.2-2007 "Textiles - Evaluation of antibacterial properties - Part 2: Absorption method", the test bacteria is Staphylococcus aureus, and the samples prepared from Example 1 and Comparative Examples 1-2 are respectively cut into 10mm x 10mm size, and subjected to antibacterial property testing after 20 times of washing.

[0041] The results are shown in the following table:

[0042]

[0043] As can be seen from the above table, example 1 is better than comparative example 1-2 in tensile strength, stain resistance and antibacterial property. By comparing example 1 with comparative example 1, it can be found that the only difference between example 1 and comparative example 1 is that no gynostemma pentaphyllum stem and leaf powder is added in comparative example 1. Since the gynostemma pentaphyllum stem and leaf powder contains a large amount of trace elements, it can help the micro-nano film to increase the strength and increase the tensile strength of example 1. The gynostemma pentaphyllum stem and leaf powder also plays a certain role in stain resistance and antibacterial rate. By comparing example 1 with comparative example 2, it can be found that the only difference between example 1 and comparative example 2 is that no herba prunellae stem and leaf powder is added in comparative example 2, which results in that the tensile strength, stain resistance and antibacterial property of comparative example 2 are slightly inferior to those of example 1. By comparing comparative example 1 with comparative example 2, it can be found that both the gynostemma pentaphyllum stem and leaf powder and the herba prunellae stem and leaf powder can affect the tensile strength, stain resistance and antibacterial property of the micro-nano tear-resistant laminated fabric, and the effect of the gynostemma pentaphyllum stem and leaf powder is higher than that of the herba prunellae stem and leaf powder.

[0044] 2.2 Effect of aqueous solution on the performance of micro-nano tear-resistant laminated fabric

[0045] (1) The preparation method of the micro-nano tear-resistant laminated fabric is as follows: reference 2.1-(1), wherein the aqueous solution in example 1 is replaced by the aqueous solution described in the following table.

[0046] The raw material composition of the aqueous solution is shown in the following table:

[0047]

[0048] Note: "-" means not added

[0049] (2) The performance of the above micro-nano tear-resistant laminated fabric samples is tested by the following test methods

[0050] ① The tensile property is tested according to 2.1-(2)-①, and the micro-nano tear-resistant laminated fabric samples prepared by the methods of example 1-2 and comparative example 3-4 are washed 60 times and then tested for tensile property;

[0051] ② The stain resistance is tested according to 2.1-(2)-②;

[0052] ③ The antibacterial property is tested according to 2.1-(2)-③.

[0053] The results are shown in the following table:

[0054]

[0055] As can be seen from the above table, the difference between Example 1 and Example 2 is that the weight parts of ammonia water and acetic acid are increased in Example 2, and the experimental results show that Example 2 is superior to Example 1 in tensile strength and antibacterial rate, which indicates that when preparing plant micro powder, the weight parts of Example 2 are selected for proportioning, which can increase the tensile strength and antibacterial rate of the fabric produced by Example 2; comparing Example 1 and Example 2 with Comparative Example 3, it can be found that the difference between Comparative Example 3 and Example 1 and Example 2 is that Comparative Example 3 does not use ammonia water, which leads to the fact that Comparative Example 3 is not as good as Example 1 and Example 2 in tensile strength, stain resistance and antibacterial rate; comparing Example 1 and Example 2 with Comparative Example 4, it can be found that the difference between Comparative Example 4 and Example 1 and Example 2 is that Comparative Example 4 does not use electrolytic water, which leads to the fact that Comparative Example 4 is not as good as Example 1 and Example 2 in tensile strength, stain resistance and antibacterial rate; comparing Comparative Example 3 and Comparative Example 4, it can be found that Comparative Example 3 and Comparative Example 4 are very similar in tensile strength, stain resistance and antibacterial rate, and the results prove that the cooperation of ammonia water and electrolytic water in the aqueous solution can achieve better.

[0056] The above-described examples only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the present patent. It should be noted that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A micro- and nano- tear resistant coated fabric, characterized in that, The micro-nano tear-resistant coated fabric comprises a micro-nano film and a base fabric, wherein the micro-nano film is formed by coating a nano-coated material on the base fabric by a hot-pressing coating process, and the nano-coated material is prepared by wrapping carbon nanotubes, plant micro-powder and phthalic anhydride with polytetrafluoroethylene concentrated dispersion liquid. The plant micro-powder is prepared from 20-35 parts of gynostemma pentaphyllum stem and leaf powder, 10-25 parts of prunella vulgaris stem and leaf powder, 45-60 parts of cinnamomum camphora leaf powder and 80-100 parts of water solution.

2. The micro-nano tear-resistant coated fabric according to claim 1, characterized in that, The gynostemma pentaphyllum stem and leaf powder is prepared by freeze-drying the stem and leaf of gynostemma pentaphyllum, and then grinding the dried stem and leaf to a particle size of 1-3 nm; the prunella vulgaris stem and leaf powder is prepared by freeze-drying the stem and leaf of prunella vulgaris, and then grinding the dried stem and leaf to a particle size of 1-3 nm; and the cinnamomum camphora leaf powder is prepared by air-drying the leaf of cinnamomum camphora at 15-20°C, and then grinding the dried leaf to a particle size of 1-2 nm.

3. The micro-nano tear-resistant coated fabric according to claim 1, characterized in that, The water solution is prepared from 10-20 parts of ammonia water, 35-45 parts of electrolyte water and 2-6 parts of acetic acid.

4. The micro-nano tear-resistant coated fabric according to claim 1, characterized in that, The water solution is prepared by adding the electrolyte water, ammonia water and acetic acid into a container, and then stirring the mixture at 5-8°C for 40-45 min.

5. A method of manufacturing the micro-nano tear-resistant laminated fabric according to any one of claims 1 to 4, characterized in that, The method comprises the following steps: S1, mixing the gynostemma pentaphyllum stem and leaf powder, prunella vulgaris stem and leaf powder and cinnamomum camphora leaf powder, and then soaking the mixture in the water solution for 2-3 h, and then concentrating the solid obtained by evaporation to obtain a plant micro-powder; S2, heating the polytetrafluoroethylene concentrated dispersion liquid to 60-80°C, and then adding the carbon nanotubes, plant micro-powder and phthalic anhydride into the polytetrafluoroethylene concentrated dispersion liquid, and then stirring and mixing the mixture to obtain a nano-coated material; S3, laying the base fabric flat, and then coating the nano-coated material on the outer surface of the base fabric by a hot-pressing coating process to obtain a micro-nano tear-resistant coated fabric.

6. The method for preparing a micro / nano tear-resistant coated fabric according to claim 5, characterized in that, The mass ratio of the polytetrafluoroethylene concentrated dispersion liquid, carbon nanotubes, plant micro-powder and phthalic anhydride is (2-4) : 5 : (5-8) : 2.

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