Process for preparing thermal insulating fabric having ultra-high wear resistance

Abstract

The present application relates to the technical field of textiles, and specifically discloses a process for preparing a thermal insulating fabric having ultra-high wear resistance. The process for preparing a thermal insulating fabric having ultra-high wear resistance comprises the following steps: (1) slurry preparation: mixing composite modified starch, PVA, and a wear-resistant additive to prepare a slurry; (2) subjecting warp yarns to finishing and sizing, and then weaving the warp yarns together with weft yarns to form a greige fabric, the greige fabric being a weft tubular fabric; and (3) subjecting the greige fabric to post-finishing to obtain a thermal insulating fabric. In addition, the preparation method of the present application has the advantage of improving the wear resistance of the thermal insulating fabric.

Description

A manufacturing process for a thermal insulation fabric with ultra-high abrasion resistance Technical Field

[0001] This application relates to the field of textile technology, and more specifically, to a process for preparing a thermal insulation fabric with ultra-high abrasion resistance. Background Technology

[0002] General Status of Related Technologies in this Field: In recent years, with the advancement of science and technology and social development, people's requirements for textiles have been increasing. In particular, for textiles used in outdoor activities and industrial production, they not only need to meet the requirements of good warmth retention and breathability, but also need to have excellent durability and abrasion resistance.

[0003] However, in the current market environment, while most thermal insulation fabrics can retain temperature well and allow air circulation, they perform poorly under prolonged use or intense friction, exhibiting significant deficiencies in durability and abrasion resistance. These fabrics are prone to wear and tear under prolonged use or high friction, leading to functional failure, shortened lifespan, and increased replacement costs. Summary of the Invention

[0004] In order to improve the abrasion resistance of thermal insulation fabrics, this application provides a preparation process for thermal insulation fabrics with ultra-high abrasion resistance.

[0005] In the first aspect, this application provides a process for preparing a thermal insulation fabric with ultra-high abrasion resistance, which adopts the following technical solution: A process for preparing a thermal insulation fabric with ultra-high abrasion resistance includes the following steps: (1) Slurry preparation: Mixing composite modified starch, PVA and abrasion-resistant additives to obtain a slurry; (2) After finishing and sizing the warp yarns, weaving them together with the weft yarns to form a grey fabric, the grey fabric being a weft tube fabric; (3) After finishing the grey fabric, a thermal insulation fabric is obtained.

[0006] By adopting the above technical solution, the weft tube has a hollow structure. When two pieces of fabric are stacked, the weft tube is close to the gap, leaving a gap in the middle. Because air is a very good poor conductor of heat, the heat insulation performance of the thermal insulation fabric is effectively improved. The composite modified starch and PVA are mixed to form a slurry with good fluidity and adhesion. The abrasion-resistant additive can be attached to the yarn surface through the sizing operation along with the slurry, thereby effectively improving the abrasion resistance of the yarn.

[0007] Preferably, the composite modified starch includes phosphate starch, sodium alginate, and cationic starch.

[0008] By adopting the above technical solution, phosphate starch, sodium alginate and cationic starch are compounded to form a composite modified starch. The resulting slurry, after being blended with PVA, has good adhesion, fluidity and permeability. The slurry film formed after sizing is smooth and soft, which is beneficial for subsequent weaving. At the same time, it can attach anti-abrasion additives to the outside of the yarn along with the sizing, thereby improving the abrasion resistance of the yarn.

[0009] Preferably, the mass ratio of phosphate starch, sodium alginate and cationic starch is (1.58-1.72):(0.25-0.38):(1.68-1.95).

[0010] By adopting the above technical solution and controlling the mass ratio of phosphate starch, sodium alginate and cationic starch, the rheological properties and adhesion properties of the composite modified starch are moderate, which is conducive to uniform sizing.

[0011] Preferably, the method for preparing the cationic starch includes the following steps: spraying sodium hydroxide solution onto potato starch, mixing and activating for 0.5 h, mixing etherifying agent and sodium hydroxide in an ice-water bath, spraying the mixture onto the activated potato starch, mixing for 0.5 h, reacting at 80°C for 3 h in a sealed environment, soaking in ethanol solution, adjusting to neutral, washing, filtering, and drying to obtain cationic starch.

[0012] By adopting the above technical solution, potato starch is quaternized to obtain positively charged cationic starch, which can effectively improve the adhesion and permeability of the slurry, thereby improving the slurry coating effect.

[0013] Preferably, the anti-wear additive is a silicon-aluminum mixed aerogel.

[0014] By adopting the above technical solution, the silicon-aluminum hybrid aerogel has good thermal insulation performance and can improve the stability of the sizing film, thereby improving the thermal insulation performance of the sized yarn. At the same time, the stability of the sizing film is beneficial to the stability of subsequent weaving.

[0015] Preferably, the preparation method of the silicon-aluminum mixed aerogel includes the following steps: mixing aluminum isopropoxide and water at 85°C, stirring under reflux for 1 hour, adjusting the pH to 3-3.5 with nitric acid, adding an alcohol-water solution of silane coupling agent, forming a gel, aging for 2 days, and then drying with supercritical carbon dioxide to obtain the silicon-aluminum mixed aerogel.

[0016] By adopting the above technical solution, adding silane coupling agent and aluminum isopropoxide together to copolymerize and gel, the resulting silicon-aluminum mixed aerogel contains silicon dioxide and aluminum oxide, which has good mechanical properties and thermal insulation properties, thereby improving the thermal insulation and abrasion resistance of the yarn.

[0017] Preferably, the silica-alumina mixed aerogel is further treated as follows before supercritical carbon dioxide drying: hexamethyldisilazane is added to the aged gel, mixed evenly, and then left to stand for 24 hours.

[0018] By adopting the above technical solution, hexamethyldisilazane is used to hydrophobically modify the silicon-aluminum mixed aerogel, thereby improving the dispersibility of the silicon-aluminum mixed aerogel.

[0019] Preferably, the mass ratio of hexamethyldisilazane to gel is (0.35-0.48):(7.59-8.15).

[0020] By adopting the above technical solution, the mass ratio of hexamethyldisilazane to gel is controlled, thereby effectively regulating the hydrophobic modification effect of silicon-aluminum mixed aerogel.

[0021] In summary, this application has the following beneficial effects: 1. Since the composite modified starch and PVA are mixed in this application to form a slurry with good fluidity and adhesion, the anti-wear additive can adhere to the yarn surface through the sizing operation along with the slurry, thereby effectively improving the abrasion resistance of the yarn.

[0022] 2. In this application, phosphate starch, sodium alginate and cationic starch are compounded to form a composite modified starch. The resulting slurry after blending with PVA has good adhesion, fluidity and permeability. The slurry film formed after sizing is smooth and soft, which is conducive to subsequent weaving. At the same time, it can attach anti-abrasion additives to the outside of the yarn along with the sizing, thereby improving the abrasion resistance of the yarn.

[0023] 3. In this application, the mass ratio of phosphate starch, sodium alginate and cationic starch is controlled to make the rheological properties and adhesion properties of the composite modified starch moderate, which is conducive to uniform sizing. Detailed Implementation

[0024] The present application will be further described in detail below with reference to the embodiments.

[0025] Preparation Examples of Cationic Starch 1-2 Preparation Example 1: The preparation method of cationic starch includes the following steps: 5 mL of 10 wt% sodium hydroxide solution is sprayed onto 10 g of potato starch, and the mixture is activated for 0.5 h. 1.05 g of 3-chloro-2-hydroxypropyltrimethylammonium chloride and 0.12 g of sodium hydroxide are mixed in an ice-water bath and then sprayed onto the activated potato starch. After mixing for 0.5 h, the mixture is reacted at 80 °C for 3 h in a sealed environment. The mixture is then soaked in ethanol solution, adjusted to neutral, washed, filtered, and dried to obtain cationic starch.

[0026] Preparation Example 2: A method for preparing cationic starch includes the following steps: 10 mL of 10 wt% sodium hydroxide solution is sprayed onto 15 g of potato starch, and the mixture is activated for 0.5 h. 1.92 g of 3-chloro-2-hydroxypropyltrimethylammonium chloride and 0.85 g of sodium hydroxide are mixed in an ice-water bath and then sprayed onto the activated potato starch. After mixing for 0.5 h, the mixture is reacted at 80 °C for 3 h in a sealed environment. The mixture is then soaked in ethanol solution, adjusted to neutral, washed, filtered, and dried to obtain cationic starch.

[0027] Example 3-10 Preparation of anti-wear additives Example 3 Preparation method of silicon-aluminum mixed aerogel includes the following steps: 1 mol aluminum isopropoxide and 200 mL water are mixed at 85°C, refluxed and stirred for 1 h, pH is adjusted to 3 with nitric acid, 15 wt% alcohol-aqueous solution of silane coupling agent KH-570 is added, the silicon-aluminum ratio is 2.25:8.56, after gel formation, it is aged for 2 days and then dried with supercritical carbon dioxide to obtain silicon-aluminum mixed aerogel.

[0028] Preparation Example 4: The preparation method of silicon-aluminum mixed aerogel includes the following steps: 1 mol of aluminum isopropoxide and 180 mL of water are mixed at 85 °C, stirred under reflux for 1 h, the pH is adjusted to 3.5 with nitric acid, and 15 wt% of an alcohol-water solution of silane coupling agent KH-570 is added, with a silicon-aluminum ratio of 1.68:7.85. After the gel is formed, it is aged for 2 days and then dried with supercritical carbon dioxide to obtain silicon-aluminum mixed aerogel.

[0029] Preparation Example 5 The difference between Preparation Example 5 and Preparation Example 3 is that in Preparation Example 5, the silicon-to-aluminum ratio is 2.25:5.95.

[0030] Preparation Example 6 The difference between Preparation Example 6 and Preparation Example 3 is that in Preparation Example 6, the silicon-to-aluminum ratio is 2.25:9.98.

[0031] Preparation Example 7 The difference between Preparation Example 7 and Preparation Example 3 is that in Preparation Example 7, the silica-alumina mixed aerogel was further treated before supercritical carbon dioxide drying: hexamethyldisilazane was added to the aged gel, the mass ratio of hexamethyldisilazane to gel was 0.35:7.59, and after being mixed evenly, it was allowed to stand for 24 hours.

[0032] Preparation Example 8 The difference between Preparation Example 8 and Preparation Example 3 is that in Preparation Example 8, the silica-alumina mixed aerogel was further treated before supercritical carbon dioxide drying: hexamethyldisilazane was added to the aged gel, the mass ratio of hexamethyldisilazane to gel was 0.48:8.15, and after being mixed evenly, it was allowed to stand for 24 hours.

[0033] Preparation Example 9 The difference between Preparation Example 9 and Preparation Example 7 is that in Preparation Example 9, the mass ratio of hexamethyldisilazane to gel is 0.35:5.62.

[0034] Preparation Example 10: The difference between Preparation Example 10 and Preparation Example 7 is that in Preparation Example 10, the mass ratio of hexamethyldisilazane to gel is 0.35:10.25. Examples

[0035] Example 1 A process for preparing a thermal insulation fabric with ultra-high wear resistance includes the following steps: (1) Slurry preparation: 65% of composite modified starch, 33% of PVA and 2% of anti-wear additive are mixed to prepare a slurry. The composite modified starch includes phosphate starch, sodium alginate and cationic starch in a mass ratio of 1.58:0.25:1.68. The cationic starch is the cationic starch prepared in Example 1 and the anti-wear additive is the anti-wear additive prepared in Example 3; (2) After the warp yarn is finished and sizing, it is woven together with the weft yarn to form a greige fabric. The greige fabric is a weft tube fabric; (3) The greige fabric is finished to obtain a thermal insulation fabric.

[0036] Example 2 A process for preparing a thermal insulation fabric with ultra-high wear resistance includes the following steps: (1) Slurry preparation: 60% of composite modified starch, 37% PVA and 3% anti-wear additive are mixed to prepare a slurry. The composite modified starch includes phosphate starch, sodium alginate and cationic starch in a mass ratio of 1.72:0.38:1.95. The cationic starch is the cationic starch prepared in Example 2 and the anti-wear additive is the anti-wear additive prepared in Example 4; (2) After the warp yarn is finished and sizing, it is woven together with the weft yarn to form a greige fabric. The greige fabric is a weft tube fabric; (3) The greige fabric is finished to obtain a thermal insulation fabric.

[0037] Example 3 The difference between Example 3 and Example 1 is that in Example 3, the mass ratio of phosphate starch, sodium alginate and cationic starch in the composite modified starch is 1.58:0.15:2.68.

[0038] Example 4 The difference between Example 4 and Example 1 is that in Example 4, the mass ratio of phosphate starch, sodium alginate and cationic starch in the composite modified starch is 1.58:1.21:0.25.

[0039] Example 5 The difference between Example 5 and Example 1 is that in Example 5, the anti-wear additive is the anti-wear additive prepared in Preparation Example 5.

[0040] Example 6 The difference between Example 6 and Example 1 is that in Example 6, the anti-wear additive is the anti-wear additive prepared in Preparation Example 6.

[0041] Example 7 The difference between Example 7 and Example 1 is that in Example 7, the anti-wear additive used is the anti-wear additive prepared in Preparation Example 7.

[0042] Example 8 The difference between Example 8 and Example 1 is that in Example 8, the anti-wear additive used is the anti-wear additive prepared in Preparation Example 8.

[0043] Example 9 The difference between Example 9 and Example 1 is that in Example 9, the anti-wear additive is the anti-wear additive prepared in Preparation Example 9.

[0044] Example 10 The difference between Example 10 and Example 1 is that in Example 10, the anti-wear additive is the anti-wear additive prepared in Preparation Example 10.

[0045] The difference between Comparative Example 1 and Example 1 is that in Comparative Example 1, an equal amount of phosphate starch was used instead of the composite modified starch.

[0046] Comparative Example 2 The difference between Comparative Example 2 and Example 1 is that in Comparative Example 2, an equal amount of cationic starch is used instead of the composite modified starch.

[0047] Comparative Example 3 differs from Example 1 in that the slurry in Comparative Example 3 does not contain anti-wear additives.

[0048] The thermal insulation fabrics were prepared according to the processes of Examples 1-10 and Comparative Examples 1-3. The thermal insulation performance was tested according to GB / T11048-2008, and the results were recorded in Table 1. Referring to GB / T21196.1-2007, the samples were flat-rubbed 50 times using a Martindale abrasion tester. The mass of the samples before and after flat-rubbing was tested, and the mass reduction rate was calculated and recorded in Table 1.

[0049] Table 1 Performance Tests of Thermal Insulation Fabrics As can be seen from Examples 1-2, Comparative Example 3, and Table 1, the thermal insulation fabric prepared in Examples 1-2 has good thermal insulation effect and wear resistance. The weft tube has a hollow structure. When two pieces of fabric are stacked, the weft tube is close to the gap, leaving a gap in the middle. Because air is a very good poor conductor of heat, it effectively improves the thermal insulation performance of the thermal insulation fabric. The yarn is sized by a slurry formed by composite modified starch, PVA, and anti-wear additives, which can effectively improve the abrasion resistance of the yarn. The composite modified starch formed by phosphate starch, sodium alginate, and cationic starch gives the slurry good fluidity and yarn adhesion, which is conducive to improving the sizing effect. The silicon-aluminum mixed aerogel, as an anti-wear additive, has good thermal insulation performance. While improving the thermal insulation performance of the yarn, it can also improve the stability of the slurry film, which is conducive to the stability of weaving and the maintenance of the fabric's abrasion resistance, thereby obtaining a thermal insulation fabric with good abrasion resistance.

[0050] Compared with Examples 1-2, Examples 3-4 and Comparative Examples 1-2 showed decreased abrasion resistance. Examples 3-4 changed the mass ratio of phosphate starch, sodium alginate, and cationic starch in the composite modified starch. Comparative Example 1 only added phosphate starch, and Comparative Example 2 only added cationic starch. This indicates that there is a synergistic effect among phosphate starch, sodium alginate, and cationic starch. When the composition of the composite modified starch and the mass ratio between its components are changed, the synergistic effect among phosphate starch, sodium alginate, and cationic starch weakens, affecting the sizing effect of the slurry, thereby reducing the abrasion resistance of the thermal insulation fabric.

[0051] Compared with Examples 1-2, Examples 5-6 show a decrease in heat retention and abrasion resistance. The abrasion-resistant additives used in Examples 5-6 have altered the silicon-aluminum ratio during preparation. The silicon-aluminum mixed aerogel is formed by copolymerization of aluminum isopropoxide and silane coupling agent. The silicon-aluminum ratio directly affects the mechanical properties of the silicon-aluminum mixed aerogel, resulting in a decrease in the strength of the silicon-aluminum mixed aerogel. Consequently, the effectiveness of the abrasion-resistant additives decreases, and both the heat insulation and abrasion resistance of the yarn decrease.

[0052] Compared with Examples 1-2, Examples 7-8 show improved heat retention and abrasion resistance. The abrasion additives used in Examples 7-8 were modified with hexamethyldisilazane during preparation. Hexamethyldisilazane can hydrophobically modify the silicon-aluminum mixed aerogel, thereby effectively improving the dispersibility of the abrasion additives in the slurry, which in turn improves the sizing effect of the slurry on the yarn and the abrasion resistance of the yarn. At the same time, it helps to maintain the stability of the slurry film and extend the abrasion resistance life of the fabric.

[0053] Compared with Examples 7-8, Examples 9-10 show a decrease in heat retention rate and abrasion resistance. The abrasion-resistant additives used in Examples 9-10 altered the mass ratio of hexamethyldisilazane to gel during preparation. The mass ratio of hexamethyldisilazane to gel directly affects the hydrophobicity and dispersibility of the silicon-aluminum mixed aerogel. When the mass ratio changes, the dispersibility of the silicon-aluminum mixed aerogel decreases, thereby reducing the sizing effect of the slurry, the heat insulation effect of the yarn, and the abrasion resistance.

[0054] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A manufacturing process for a thermal insulation fabric with ultra-high wear resistance, characterized in that: Includes the following steps: (1) Slurry preparation: The composite modified starch, PVA and anti-wear additives are mixed to prepare a slurry; (2) After the warp yarns are sorted and sized, they are woven together with the weft yarns to form a greige fabric, which is a weft tube fabric; (3) The greige fabric is finished to obtain a heat-insulating fabric.

2. The preparation process of a thermal insulation fabric with ultra-high wear resistance according to claim 1, characterized in that: The composite modified starch includes phosphate starch, sodium alginate, and cationic starch.

3. The preparation process of a thermal insulation fabric with ultra-high wear resistance according to claim 2, characterized in that: The mass ratio of phosphate starch, sodium alginate and cationic starch is (1.58-1.72):(0.25-0.38):(1.68-1.95).

4. The preparation process of a thermal insulation fabric with ultra-high wear resistance according to claim 2, characterized in that: The method for preparing the cationic starch includes the following steps: spraying sodium hydroxide solution onto potato starch, mixing and activating for 0.5 h, mixing etherifying agent and sodium hydroxide in an ice-water bath, spraying the mixture onto the activated potato starch, mixing for 0.5 h, reacting at 80°C for 3 h in a sealed environment, soaking in ethanol solution, adjusting to neutral, washing, filtering, and drying to obtain cationic starch.

5. The preparation process of a thermal insulation fabric with ultra-high wear resistance according to claim 1, characterized in that: The wear-resistant additive is a silicon-aluminum mixed aerogel.

6. The preparation process of a thermal insulation fabric with ultra-high wear resistance according to claim 5, characterized in that: The preparation method of the silicon-aluminum mixed aerogel includes the following steps: aluminum isopropoxide and water are mixed at 85°C, refluxed and stirred for 1 hour, the pH is adjusted to 3-3.5 with nitric acid, an alcohol-water solution of silane coupling agent is added, after gel formation, the mixture is aged for 2 days, and then dried with supercritical carbon dioxide to obtain the silicon-aluminum mixed aerogel.

7. The preparation process of a thermal insulation fabric with ultra-high wear resistance according to claim 6, characterized in that: Before being dried with supercritical carbon dioxide, the silica-alumina mixed aerogel is further treated as follows: hexamethyldisilazane is added to the aged gel, mixed evenly, and then left to stand for 24 hours.

8. The preparation process of a thermal insulation fabric with ultra-high wear resistance according to claim 7, characterized in that: The mass ratio of hexamethyldisilazane to gel is (0.35-0.48):(7.59-8.15).

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