Preparation method of wear-resistant flannel

Abstract

The invention relates to a preparation method of wear-resistant flannel, which relates to the technical field of fabric processing, and comprises the following steps: (1) blending and weaving blended yarns containing wool as raw materials to obtain grey cloth; (2) putting the gray fabric obtained in the step (1) into a silane coupling agent solution for soaking, and then taking out and drying; (3) laying the grey cloth obtained in the step (2), pouring a prepared wear-resistant coating between every two layers, and curing after the vacuum bag is formed; (4) soaking the gray fabric obtained in the step (3) in a softening agent solution, taking out and airing; wherein the wear-resistant coating comprises epoxy resin, a flexible reinforcing agent and an optional nanofiller. The method is easy and convenient to operate, and the wear resistance of the flannel can be effectively improved under the condition that the original characteristics of the flannel are not obviously changed.

Description

Technical Field

[0001] This application relates to the field of fabric processing, and particularly to a preparation method of wear-resistant flannel. Background Art

[0002] As a soft, comfortable and warm fabric, flannel is widely used in fields such as home furnishing and clothing.

[0003] However, the existing flannel has deficiencies in wear resistance, is prone to pilling and abrasion, which affects its service life and warmth retention effect. For example, Chinese Patent CN201610156176.5 discloses a production method of flannel. Although the obtained plush length is controllable and the drawbar three-dimensional sense is stronger, the wear resistance problem is not solved.

[0004] Therefore, with the continuous improvement of consumers' quality requirements for textiles, there is an urgent need to develop a new preparation method of flannel to improve the wear resistance of flannel. Summary of the Invention

[0005] The purpose of this application is to provide a simple preparation method for improving the wear resistance of flannel. This method is easy to operate and can effectively improve its wear resistance without significantly changing the original properties of flannel.

[0006] In the first aspect, a preparation method of wear-resistant flannel provided by this application adopts the following technical scheme: A preparation method of wear-resistant flannel includes the following steps: (1) Using a blended yarn containing wool as raw material for blended weaving to obtain a grey cloth; (2) Immersing the grey cloth obtained in step (1) in a silane coupling agent solution, and then taking it out and drying; (3) Laying the grey cloth obtained in step (2), pouring the prepared wear-resistant coating between each layer, and curing after vacuum bag forming; (4) Immersing the grey cloth obtained in step (3) in a softener solution, taking it out and drying in the air; Wherein, the wear-resistant coating includes epoxy resin.

[0007] By adopting the above technical scheme, through the modification of flannel with silane coupling agent, the ethoxy group (-OEt) in the silane coupling agent molecule generates silanol (-SiOH) through hydrolysis, and undergoes a condensation reaction with the hydroxyl group on the surface of flannel to form a stable silicon-oxygen bond (Si–O–C); the amino group (-NH 2 ) at the other end of the silane molecule undergoes a cross-linking reaction with the epoxy group of epoxy resin, further enhancing the chemical bonding force between flannel and the wear-resistant coating; finally, the phenomenon of fiber breakage and fluff shedding caused by friction of flannel is effectively reduced, and the wear resistance of the flannel obtained by the preparation method of this application is improved.

[0008] Optionally, the wear-resistant coating further comprises a flexible reinforcing agent and an optional nano filler.

[0009] By adopting the above technical solution, a flexible reinforcing agent is introduced into the wear-resistant coating. Since it provides flexible molecular chain segments, it effectively alleviates the brittleness of the crosslinked network. At the same time, its terminal amine groups react with epoxy groups and participate in crosslinking, further enhancing the bonding strength. Combined with nano fillers, as rigid nano particles, they form physical intercalation with epoxy resin molecules. Therefore, the interfacial bonding strength between the flannel and the wear-resistant coating is significantly improved, and the wear resistance is further enhanced.

[0010] Optionally, the epoxy resin is E-44.

[0011] Optionally, the flexible reinforcing agent is polyetheramine.

[0012] Optionally, the nano filler is carbon nanotube.

[0013] Optionally, the blended yarn is composed of wool, acrylic and viscose fiber.

[0014] By adopting the above technical solution, wool is blended with high-performance fibers to increase the strength of the yarn and significantly improve the wear resistance of the flannel.

[0015] Optionally, the concentration of the silane coupling agent solution is 20-50 g / L; Optionally, between step (1) and step (2), it further comprises: soaking the greige cloth obtained in step (1) in a cleaning solution, and then performing deactivation treatment of the cleaning solution at 52-58 °C.

[0016] Optionally, the preparation method of the cleaning solution comprises the following steps: preparing an aqueous cellulase solution with a pH of 5.0, and adding keratin powder thereto to obtain the cleaning solution.

[0017] By adopting the above technical solution, the flannel fabric is cleaned and dehydrated to remove surface impurities, which can make the fabric surface smoother and the roughness significantly reduced, creating good conditions for subsequent treatment.

[0018] Optionally, between step (2) and step (3), it further comprises: using a spraying device to uniformly spray the PVA solution onto the surface of the greige cloth, and after spraying, drying the greige cloth.

[0019] By adopting the above technical solution, the hydroxyl groups (-OH) in PVA undergo physical or chemical interactions with epoxy resin to form a dynamic hydrogen bond network. Under load or fatigue conditions, the hydrogen bonds can break and re-form, absorbing stress and enhancing the wear resistance of the fabric. PVA can also improve the interfacial wettability and enhance the compatibility between the fabric and epoxy resin.

[0020] In summary, this application includes at least one of the following beneficial technical effects: 1. An abrasion-resistant coating composed of epoxy resin, a flexible reinforcing agent, and optionally carbon nanotubes forms a dense cross-linked network structure. This structure enhances the intermolecular forces of the coating, making it more compact as a whole, thereby reducing the damaged area and effectively improving its wear resistance without significantly changing the original properties of the flannel. 2. Through multiple treatments of cleaning, silane coupling agent, and PVA modification of the flannel, the interfacial bonding strength between the flannel and the abrasion-resistant coating is significantly improved, preventing the abrasion-resistant coating from easily peeling off during friction. This good adhesion enables the coating to firmly protect the fabric and improve the overall wear resistance of the fabric. 3. The entire preparation method is simple to operate, easy for industrial production, and has good application prospects. Specific Embodiments

[0021] The present application will be described below through examples, but the present application is not limited thereto. The experimental methods shown in the following examples are all conventional methods unless otherwise specified. The reagents and materials shown without indicating the manufacturer can all be obtained as conventional products through commercial purchase.

[0022] Preparation Examples: Silane coupling agent solution: Dissolve γ-aminopropyltriethoxysilane (KH550) in an ethanol-deionized water mixture (ethanol: water = 7:3), and adjust the pH of the solution to 5 with glacial acetic acid.

[0023] Abrasion-resistant coating A: Dissolve 0.378 g of epoxy resin E-44 and 0.1 g of polyetheramine (D-230) in 60 mL of acetone, stir for 1.5 h, and sonicate for 30 min to obtain a transparent blend solution.

[0024] Abrasion-resistant coating B: Ultrasonically disperse 0.378 g of epoxy resin E-44 and 4 mg of carbon nanotubes (CNTs) at a frequency of 40 kHz for 40 minutes; then add 0.1 g of polyetheramine (D-230), dissolve in 60 mL of acetone, stir for 1.5 h, and sonicate for 30 min to obtain a transparent blend solution.

[0025] Cleaning solution: Prepare 100 mL of an aqueous cellulase solution with a pH of 5.0, and add 1 g of keratin powder thereto to obtain the cleaning solution.

[0026] Polyvinyl alcohol (PVA) solution: Dissolve PVA in deionized water, stir and heat to 90 °C until completely dissolved.

[0027] Softener solution: Add cationic softener EQ-1 to deionized water, stir and heat to 50 °C to completely dissolve it.

[0028] Example 1 A method for preparing wear-resistant flannel, comprising the following steps: 1. Weaving: Use a blended yarn of wool with a fineness of 21s, acrylic fiber, and viscose fiber as raw materials (blending ratio is 60%:25%:15%), and perform blended weaving to obtain a grey cloth. 2. Modification treatment: Immerse the grey cloth obtained in step (1) in a silane coupling agent solution with a concentration of 30 g / L for 30 min, then take it out and dry it. 3. Coating the wear-resistant coating: Lay 4 layers of the grey cloth obtained in step (2) alternately at 0° / 90°, brush the wear-resistant coating A in an amount of 45% of the mass of the grey cloth, evenly compact it with a roller, form it in a vacuum bag, and the vacuum degree is -0.08 MPa; Place it in an oven at 100 °C and dry for 20 minutes to cure the wear-resistant coating and form a wear-resistant layer. 4. Post-treatment: Immerse the grey cloth obtained in step (3) in a softener solution with a concentration of 10 g / L for 10 minutes, then take it out, squeeze out the water, and air dry it to obtain the wear-resistant flannel.

[0029] Example 2 A method for preparing wear-resistant flannel, comprising the following steps: 1. Weaving: Use a blended yarn of wool with a fineness of 21s, acrylic fiber, and viscose fiber as raw materials (blending ratio is 60%:25%:15%), and perform blended weaving to obtain a grey cloth. 2. Modification treatment: Immerse the grey cloth obtained in step (1) in a silane coupling agent solution with a concentration of 20 g / L for 50 min, then take it out and dry it. 3. Coating the wear-resistant coating: Lay 4 layers of the grey cloth obtained in step (2) alternately at 0° / 90°, brush the wear-resistant coating B in an amount of 45% of the mass of the grey cloth, evenly compact it with a roller, form it in a vacuum bag, and the vacuum degree is -0.08 MPa; Place it in an oven at 100 °C and dry for 20 minutes to cure the wear-resistant coating and form a wear-resistant layer. 4. Post-treatment: Immerse the greige cloth obtained in step (3) in a softener solution with a concentration of 10 g / L for 10 minutes, then take it out, squeeze out the water, and air dry to obtain abrasion-resistant flannel.

[0030] Example 3 A method for preparing abrasion-resistant flannel, comprising the following steps: 1. Weaving: Use a blended yarn of wool with a fineness of 21s, acrylic fiber, and viscose fiber as raw materials (blending ratio is 60%:25%:15%) for blended weaving to obtain a greige cloth; 2. Modification treatment: Immerse the greige cloth obtained in step (1) in a cleaning solution for 2 hours, then perform deactivation treatment at 52 - 58 °C; then put it into a silane coupling agent solution with a concentration of 30 g / L and soak for 30 min, then take it out and dry it; 3. Coating with abrasion-resistant coating: Lay 4 layers of the greige cloth obtained in step (2) alternately at 0° / 90°, and apply the abrasion-resistant coating B in an amount of 45% of the mass of the greige cloth, evenly compact it with a roller, form it in a vacuum bag, and the vacuum degree is -0.08 MPa; Place it in an oven at 100 °C and dry for 20 minutes to cure the abrasion-resistant coating and form an abrasion-resistant layer; 4. Post-treatment: Immerse the greige cloth obtained in step (3) in a softener solution with a concentration of 10 g / L for 10 minutes, then take it out, squeeze out the water, and air dry to obtain abrasion-resistant flannel.

[0031] Example 4 A method for preparing abrasion-resistant flannel, comprising the following steps: 1. Weaving: Use a blended yarn of wool with a fineness of 21s, acrylic fiber, and viscose fiber as raw materials (blending ratio is 60%:25%:15%) for blended weaving to obtain a greige cloth; 2. Modification treatment: Immerse the greige cloth obtained in step (1) in a silane coupling agent solution with a concentration of 50 g / L for 20 min, then take it out and dry it; Use a spraying device to evenly spray the PVA solution onto the surface of the greige cloth, and the spraying amount is 20–50 mL / m 2 , after spraying, dry the greige cloth at 80 °C for 30 minutes.

[0032] 3. Coating with abrasion-resistant coating: Lay 4 layers of the greige cloth obtained in step (2) alternately at 0° / 90°, and apply the abrasion-resistant coating B in an amount of 45% of the mass of the greige cloth, evenly compact it with a roller, form it in a vacuum bag, and the vacuum degree is -0.08 MPa; Place it in an oven at 100 °C and dry for 20 minutes to cure the abrasion-resistant coating and form an abrasion-resistant layer; 4. Post-treatment: Immerse the greige fabric obtained in step (3) in a softener solution with a concentration of 10 g / L for 10 minutes, then take it out, squeeze out the water, and air dry to obtain abrasion-resistant flannel.

[0033] Example 5 A method for preparing abrasion-resistant flannel, comprising the following steps: 1. Weaving: Use a blended yarn of wool with a fineness of 21s, acrylic fiber, and viscose fiber as raw materials (the blending ratio is 60%:25%:15%), and perform blended weaving to obtain a greige fabric; 2. Modification treatment: Immerse the greige fabric obtained in step (1) in a cleaning solution for 2 hours, then perform deactivation treatment at 52 - 58 °C; then put it into a silane coupling agent solution with a concentration of 30 g / L and soak for 30 min, then take it out and dry; use a spraying device to evenly spray the PVA solution on the surface of the greige fabric, with a spraying amount of 20–50 mL / m 2 , after spraying, dry the greige fabric at 80 °C for 30 minutes.

[0034] 3. Coating with wear-resistant coating: Lay 4 layers of the greige fabric obtained in step (2) alternately at 0° / 90°, and apply the wear-resistant coating B at a dosage of 45% of the mass of the greige fabric, evenly compact with a roller, form in a vacuum bag, and the vacuum degree is -0.08 MPa; place it in an oven at 100 °C and dry for 20 minutes to cure the wear-resistant coating and form a wear-resistant layer; 4. Post-treatment: Immerse the greige fabric obtained in step (3) in a softener solution with a concentration of 10 g / L for 10 minutes, then take it out, squeeze out the water, and air dry to obtain abrasion-resistant flannel.

[0035] Comparative Example 1 Select a pure wool yarn with a fineness of 21s as the raw material, and the rest is the same as in Example 1.

[0036] Comparative Example 2 Without the modification treatment in step (2), and the rest is the same as in Example 1.

[0037] Comparative Example 3 Without the coating of the wear-resistant coating in step (3), and the rest is the same as in Example 1.

[0038] Comparative Example 4 The wear-resistant coating only contains epoxy resin E-44, and the rest is the same as in Example 1.

[0039] Performance test Use a Martindale abrasion tester to conduct abrasion resistance test and analysis on the flannel prepared in Examples 1 - 5 and Comparative Examples 1 - 4. Before the test, place the samples in the test environment in a relaxed state for 24 h. Then cut 50×50 mm 2The samples are loaded into the holder while the wear resistance test is carried out. During the test, every 100 wear cycles, the test is paused, the holder is removed, and the debris on the surface of the sample and the abrasive is gently cleaned with a brush, and then the test is continued until obvious holes appear in the specimen. Record the value on the reading disk at this time, which is the wear cycle number of the specimen.

[0040] Table 1 The results are shown in Table 1, indicating that the wear resistance times of the samples in the example group are significantly improved compared with those in the comparative example group, and the average improvement amplitude reaches more than 30%.

[0041] It can be seen from the test results of Example 1 and Comparative Example 3 that through the wear-resistant coating containing epoxy resin and polyetheramine, a dense cross-linked network structure is formed. The presence of polyetheramine makes the flannel show stronger energy absorption ability below, thereby improving the surface hardness of the fabric and reducing the damage area, and significantly improving the wear resistance of the flannel.

[0042] It can be seen from the test results of Example 2 and Example 1 that by introducing carbon nanotubes into the epoxy resin and combining with the synergistic design of polyetheramine, a hierarchical nano-network structure is constructed, greatly improving the binding ability of each molecule to the flannel, and significantly improving the wear resistance of the flannel.

[0043] It can be seen from the test results of Example 5 and Example 2 that the multiple effects of cleaning, silane coupling agent, and PVA modification in the modification treatment form a synergistic enhancement effect. After cleaning, the surface impurities of the fabric are removed. Combined with the silane coupling agent, the surface of the fabric will become smoother and the roughness will be significantly reduced. Then, the surface wettability is improved by PVA modification, which is beneficial to the formation of a lubricating film during the friction process. Finally, the wear of the fabric after the modification treatment is reduced, effectively improving the wear resistance of the flannel of the present application. By giving full play to the unique functions of different modification methods, the problem of insufficient wear resistance of traditional flannel is solved.

[0044] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited by this. Therefore, all equivalent implementations or changes made according to the present application should be covered within the protection scope of the present application.

Claims

1. A method for preparing wear-resistant flannel, comprising the following steps: (1) using a blended yarn containing wool as a raw material for blending and spinning to obtain a grey cloth; (2) soaking the grey cloth obtained in step (1) in a silane coupling agent solution, and then taking it out and drying it; (3) Laying the grey cloth obtained in step (2) and pouring the prepared wear-resistant coating between each layer, and curing after vacuum bag forming; (4) immersing the grey cloth obtained in step (3) in a softener solution, taking it out and drying it; in, The wear-resistant coating includes epoxy resin.

2. The method for preparing a wear-resistant flannel according to claim 1, characterized in that: The wear resistant coating also includes a flexibility enhancer and optionally a nanofiller.

3. The method for preparing a wear-resistant flannel according to claim 1, characterized in that: The epoxy resin is E-44.

4. The method for preparing a wear-resistant flannel according to claim 2, characterized in that: The flexibility enhancer is polyetheramine.

5. The method for preparing a wear-resistant flannel according to claim 2, characterized in that: The nano filler is carbon nano tube.

6. The method for preparing a wear-resistant flannel according to claim 1, characterized in that: The blended yarn consists of wool, acrylic fiber and viscose fiber.

7. The method for preparing a wear-resistant flannel according to claim 1, characterized in that: The concentration of the silane coupling agent solution is 20-50 g / L.

8. The method for preparing a wear-resistant flannel according to claim 1, characterized in that: The method between step (1) and step (2) further includes: soaking the grey cloth obtained in step (1) in a cleaning solution, and then deactivating the cleaning solution at 52-58°C.

9. The method for preparing a wear-resistant flannel according to claim 8, characterized in that: The method for preparing the cleaning solution comprises the following steps: preparing an aqueous cellulase solution with a pH of 5.0, and adding keratin powder thereto to obtain a cleaning solution.

10. The method for preparing wear-resistant flannel according to claim 1, characterized in that: The step between step (2) and step (3) also includes: using a spraying device to evenly spray the PVA solution onto the surface of the grey cloth, and after the spraying is completed, drying the grey cloth.

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