Preparation method of high-elastic cashmere blended fabric and fabric

Abstract

The preparation method comprises the following steps: soaking sericite in deionized water, adding sodium dodecyl benzene sulfonate, N-sodium lauroyl sarcosinate and silica sol, uniformly mixing, sufficiently foaming, drying, compressing, shaping, calcining and crushing to obtain modified sericite; a silane coupling agent, a plant extract, absolute ethyl alcohol and deionized water are mixed to obtain a soaking solution, and the modified sericite is added into the soaking solution to be soaked in a heat preservation mode and dried to obtain load type modified sericite; adding the supported modified sericite into a polyamide fiber melt, extruding through a spinning opening, cooling and curing to obtain modified polyamide fibers; the modified polyamide fiber, cashmere and cotton fiber are blended to obtain high-elasticity cashmere blended yarn, and the high-elasticity cashmere blended yarn is used as warp and weft to be woven to obtain the high-elasticity cashmere blended fabric. The cashmere blended fabric prepared by the invention has better tensile property and elastic resilience, and also has better shrink resistance and air permeability.

Description

Technical Field

[0001] The invention belongs to the technical field of fabrics, and particularly relates to a preparation method of a high-elastic cashmere blended fabric and the fabric. Background Art

[0002] Pure cashmere fabric is a high-end natural fiber fabric with many excellent properties, such as softness, warmth, and lightness. However, it also has some defects, such as insufficient elasticity, easy breaking and shrinking. Down jacket fabrics are required to have good elasticity and be not easy to break or shrink. Therefore, these defects will limit its service life and its application as down jacket fabrics to a certain extent.

[0003] In the prior art, cashmere is usually blended with polyamide fibers, cotton fibers, etc. to improve the elasticity, breakage, and shrinkage of the fabric. However, the air permeability of polyamide fibers is relatively poor. Based on this, the present invention provides a preparation method and fabric of a high-elastic cashmere blended fabric. Summary of the Invention

[0004] The purpose of the present invention is to provide a preparation method of a high-elastic cashmere blended fabric and a fabric in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions: A method for preparing a high-elastic cashmere blended fabric comprises the following steps: Step 1: Soaking sericite in deionized water, adding sodium dodecylbenzenesulfonate, sodium N-lauroylsarcosinate and silica sol, stirring and mixing, fully foaming, drying, compressing and shaping, and then calcining and crushing to obtain modified sericite; Step 2: A silane coupling agent, a plant extract, anhydrous ethanol, and deionized water are mixed to obtain a soaking solution, the modified sericite is added to the soaking solution, the solution is soaked under heat preservation, and then dried to obtain the loaded modified sericite; The plant extracts, by weight, include 30-40 parts of Selaginella extract, 22-30 parts of Hamamelis virginiana extract, 10-18 parts of Artemisia argyi extract, 15-18 parts of Luffa fructus extract, and 8-15 parts of Aloe vera extract; Step 3: adding the loaded modified sericite to the polyamide fiber melt, extruding through a spinning nozzle and cooling and solidifying to obtain the modified polyamide fiber; Step 4: Blending the modified polyamide fiber, cashmere and cotton fiber to obtain a high-elastic cashmere blended yarn, and using the high-elastic cashmere blended yarn as the warp and weft to weave a high-elastic cashmere blended fabric.

[0006] As a further optimization solution of the present invention, in step 1, the particle fineness of the sericite is 420-480 mesh; The raw materials for preparing the modified sericite include, by weight, 50-60 parts of sericite, 2-5 parts of sodium dodecylbenzenesulfonate, 2-5 parts of sodium N-lauroylsarcosinate, 1-2 parts of silica sol, and 30-40 parts of deionized water.

[0007] As a further optimization scheme of the present invention, in step one, the calcination is specifically as follows: heating to 400-700°C at a rate of 6-10°C / min and keeping warm for 1-2 hours; heating to 1000-1300°C at a rate of 8-12°C / min and keeping warm for 2-4 hours, and then cooling with the furnace.

[0008] As a further optimization scheme of the present invention, in step 2, 200-300 g of soaking solution is used for soaking every 100 g of modified sericite, wherein the mass ratio of silane coupling agent, plant extract, anhydrous ethanol and deionized water in the soaking solution is 1:2-4:18:3; The silane coupling agent includes at least one of silane coupling agent A-186, silane coupling agent KH-560, and silane coupling agent KH-550.

[0009] As a further optimization solution of the present invention, in step 2, the temperature of the heat preservation soaking is 30-40°C, the time is 2-3 hours, and the rotation speed is 600-800 r / min.

[0010] As a further optimization solution of the present invention, in step three, 70-100 g of supported modified sericite is added to every 1 kg of polyamide fiber melt.

[0011] As a further optimization solution of the present invention, in step 4, the mass ratio of the modified polyamide fiber, cashmere and cotton fiber is 1-2:1:1.

[0012] A high-elastic cashmere blended fabric is prepared by the above preparation method.

[0013] The beneficial effects of the present invention are: The present invention utilizes sodium dodecylbenzene sulfonate and sodium N-lauroyl sarcosinate to foam and calcine modified sericite, and utilizes the modified sericite to load plant extracts such as Selaginella extract and Hamamelis extract, and then adds the extracted extracts to a polyamide fiber melt to prepare a modified polyamide fiber. The cashmere blended fabric obtained by blending the modified polyamide fiber with cashmere and cotton fiber has good strength and elongation properties and elastic recovery properties, as well as good shrinkage resistance and breathability. DETAILED DESCRIPTION

[0014] The present application is described in further detail below. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0015] 1. Materials 1. Sericite: purchased from Wanqiao Sericite Powder Factory in Chuzhou City, Anhui Province, with a purity of 99%; crushed to a particle size of 420-480 mesh; 2. Selaginella extract: purchased from Jiangxi Ruiweier Biotechnology Co., Ltd., purity 98%; 3. Witch hazel extract: purchased from Wuhan Xinxin Jiali Biotechnology Co., Ltd., purity 99%; 4. Silane coupling agent: silane coupling agent A-186, silane coupling agent KH-560, silane coupling agent KH-550; the following experiments used silane coupling agent A-186; In the following examples, any method not specified may be carried out according to conventional methods. Other materials and reagents used may be obtained through commercial channels unless otherwise specified.

[0016] 2. Methods 2.1 Preparation of modified sericite The raw materials for preparing the modified sericite include, by weight, 56 parts of sericite, 3 parts of sodium dodecylbenzenesulfonate, 2.5 parts of sodium N-lauroylsarcosinate, 1.5 parts of silica sol, and 37 parts of deionized water; The sericite is soaked in deionized water, and sodium dodecylbenzenesulfonate, sodium N-lauroyl sarcosine and silica sol are added and stirred. After sufficient foaming, the mixture is dried, compressed and shaped, and then calcined. The calcination is specifically as follows: heating to 400°C at a rate of 8°C / min and keeping warm for 1.5 hours; heating to 1000°C at a rate of 10°C / min and keeping warm for 3 hours, then cooling with the furnace, and crushing to obtain modified sericite.

[0017] 2.2 Preparation of loaded modified sericite Prepared plant extracts: the plant extracts, by weight, include 35 parts of Selaginella extract, 26 parts of Hamamelis virginiana extract, 13 parts of Artemisia annua extract, 16 parts of Luffa fructus extract, and 10 parts of Aloe vera extract; Prepare soaking solution: uniformly mix silane coupling agent, plant extract, anhydrous ethanol and deionized water in a mass ratio of 1:3:18:3 to obtain a soaking solution, add modified sericite into the soaking solution, soak 100g of modified sericite with 240g of soaking solution, stir at a speed of 650r / min, soak at 35°C for 2.5h, and obtain loaded modified sericite after drying.

[0018] 2.3 Preparation of modified polyamide fiber The loaded modified sericite is added to the polyamide fiber melt, with 70 g of the loaded modified sericite added to every 1 kg of the polyamide fiber melt, and the modified polyamide fiber is obtained after extrusion through a spinning nozzle and cooling and solidification.

[0019] 2.4. High-elastic cashmere blended fabric Modified polyamide fiber, cashmere and cotton fiber were blended in a mass ratio of 1:1:1 to obtain high-elastic cashmere blended yarn, and the high-elastic cashmere blended yarn was used as the warp and weft yarns to weave high-elastic cashmere blended fabrics (the fineness of the warp and weft yarns was 20D, the weaving density of the warp yarn was 45 yarns / cm, and the weaving density of the weft yarn was 65 yarns / cm), which was recorded as group A.

[0020] 2.5 Single-factor experiment 2.5.1. Adjustment of the preparation process of modified sericite Group A01: Based on Group A, only the parameters of the calcination process were adjusted in this group. Specifically, the temperature was raised to 500°C at a rate of 8°C / min and kept warm for 1.5 hours; the temperature was raised to 1150°C at a rate of 10°C / min and kept warm for 3 hours, and then cooled with the furnace; the rest remained the same as Group A.

[0021] Group A02: Based on Group A, only the parameters of the calcination process were adjusted in this group. Specifically, the temperature was raised to 700°C at a rate of 8°C / min and kept warm for 1.5 hours; the temperature was raised to 1250°C at a rate of 10°C / min and kept warm for 3 hours, and then cooled with the furnace; the rest remained the same as Group A.

[0022] 2.5.2. Replacement of raw materials in the preparation of modified sericite Group D-1: Based on Group A01, only the raw materials for preparing modified sericite were replaced in this group. The raw materials include, by weight: 56 parts of sericite, 5.5 parts of sodium dodecylbenzenesulfonate, 1.5 parts of silica sol, and 37 parts of deionized water. The rest are consistent with group A01.

[0023] Group D-2: Based on Group A01, only the raw materials for preparing modified sericite were replaced in this group. The raw materials included, by weight: 56 parts of sericite, 5.5 parts of sodium N-lauroyl sarcosinate, 1.5 parts of silica sol, and 37 parts of deionized water. The rest are consistent with group A01.

[0024] Group D-3: Based on Group A01, only the raw materials for preparing modified sericite were replaced in this group. The raw materials include, by weight: 56 parts of sericite, 3 parts of sodium dodecylbenzenesulfonate, 2.5 parts of calcium sulfate, 1.5 parts of silica sol, and 37 parts of deionized water. The rest are consistent with group A01.

[0025] 2.5.3. Replacement of raw materials in the preparation of loaded modified sericite Group D-4: Based on Group A01, only the raw materials for the preparation of the plant extracts were replaced in this group. The plant extracts, by weight, included 26 parts of Hamamelis virginiana extract, 13 parts of Artemisia argyi extract, 16 parts of Luffa fructus extract, and 45 parts of Aloe vera extract; that is, the Selaginella thunbergii extract was replaced with an equal amount of Aloe vera extract; The rest are consistent with group A01.

[0026] Group D-5: Based on Group A01, only the raw materials for the preparation of the plant extracts were replaced in this group. The plant extracts, calculated by weight, included 35 parts of Selaginella extract, 13 parts of Artemisia argyi extract, 16 parts of Luffa extract, and 36 parts of Aloe extract; that is, the Hamamelis virginiana extract was replaced with an equal amount of Aloe extract; The rest are consistent with group A01.

[0027] Group D-6: Based on Group A01, only the raw materials for the preparation of the plant extracts were replaced in this group. The plant extracts, calculated by weight, included 35 parts of Selaginella extract, 26 parts of chamomile extract, 13 parts of mugwort extract, 16 parts of loofah extract, and 10 parts of aloe extract; that is, the witch hazel extract was replaced with an equal amount of chamomile extract; The rest are consistent with group A01.

[0028] Group D-7: Based on Group A01, only the raw materials for the preparation of the plant extracts were replaced in this group. The plant extracts, calculated by weight, included 13 parts of Artemisia annua extract, 16 parts of Luffa cylindrica extract, and 71 parts of Aloe vera extract. That is, the Selaginella thunbergii extract was replaced with an equal amount of Aloe vera extract, and the Hamamelis virginiana extract was replaced with an equal amount of Aloe vera extract. The rest are consistent with group A01.

[0029] 2.5.4. Blank group experimental design The present invention also designed two blank groups for contrast, as follows: Blank group 1: Step 2.1 was omitted, and the unmodified sericite was directly used for the following treatments: 1) preparing a soaking solution: uniformly mix a silane coupling agent, a plant extract (same as in group A), anhydrous ethanol, and deionized water in a mass ratio of 1:3:18:3 to obtain a soaking solution, add sericite to the soaking solution, soak sericite with 240 g of the soaking solution per 100 g of sericite, stir at 650 r / min, soak at 35°C for 2.5 h, and dry to obtain the supported sericite; 2) adding the loaded sericite to a polyamide fiber melt, with 70 g of the loaded sericite added to every 1 kg of the polyamide fiber melt, extruding through a spinning nozzle and cooling and solidifying to obtain a modified polyamide fiber; 3) Modified polyamide fiber, cashmere, and cotton fiber are blended in a mass ratio of 1:1:1 to obtain a high-elastic cashmere blended yarn, and the high-elastic cashmere blended yarn is used as the warp and weft yarns to obtain a high-elastic cashmere blended fabric (the fineness of the warp and weft yarns and the weaving density of the warp and weft yarns are consistent with those of Group A).

[0030] Blank Group 2: The polyamide fiber melt was extruded through a spinning nozzle and cooled and solidified to obtain polyamide fiber; the polyamide fiber, cashmere, and cotton fiber were blended in a mass ratio of 1:1:1 to obtain cashmere blended yarn, and the cashmere blended yarn was used as the warp and weft yarns to obtain cashmere blended fabrics (the fineness of the warp and weft yarns and the weaving density of the warp and weft yarns were the same as those of Group A).

[0031] 3. Performance Testing 3.1 Mechanical properties test An electronic fiber strength tester (LLY-06BD type electronic fiber strength tester) was used to test the strength and elongation properties and elastic recovery of the fabrics in the experimental groups (Group A, Group A01, Group A02), the control groups (Groups D-1 to 6), and the blank group. The pre-tension was 0.15 cN, the stretching speed was 24 mm / min, the clamping distance was 28 mm (the elastic recovery rate was tested using a 5% fixed elongation test), and the test was repeated 100 times. The average value was calculated to obtain the strength and elongation properties and elastic recovery of the fabrics. The test results are recorded in Table 1: Table 1 Strength and elongation properties and elasticity test data record ; Experimental conclusion: Based on the data in Table 1, it can be seen that the fabrics of group A, group A01 and group A02 all have good strength and elongation and elastic recovery, among which group A01 has the best effect. This shows that according to the preparation method of the experimental group of the present invention, high-elastic cashmere blended fabrics can be prepared, and after analysis, it can be seen that different calcination parameters also have a more obvious effect on the final strength and elongation and elastic recovery of the fabric; and the use of sodium dodecylbenzene sulfonate and sodium N-lauroyl sarcosine to synergistically foam treat sericite can significantly improve the final strength and elongation and elastic recovery of the fabric; in addition, the synergistic use of Selaginella extract and Hamamelis extract can also effectively improve the final strength and elongation and elastic recovery of the fabric, and the combined use of modification treatment and soaking treatment of sericite has a more obvious effect on the final strength and elongation and elastic recovery of the fabric. It is possible that there is a synergistic effect between the modified sericite treated with sodium dodecylbenzene sulfonate and sodium N-lauroyl sarcosine and the Selaginella extract and Hamamelis extract.

[0032] 3.2. Shrinkage resistance test The fabric samples of the experimental groups (Group A, Group A01, Group A02), the control groups (Groups D-1 to 6), and the blank group were treated in the same manner. Specifically, the fabric samples were folded in half and sewn together with polyester thread. A cross mark was made in the length and width directions. The longitudinal and transverse dimensions before shrinkage, L0, were recorded. The samples were washed continuously in a washing machine for 1 hour at a speed of 1200 r / min and a temperature of 25°C. They were then taken out and laid flat in a 40°C oven to dry. The longitudinal and transverse dimensions, L1, were recorded. The shrinkage rate of the samples was calculated based on L0 and L1 using the formula: [(L0-L1) / L0]×100%. The calculated test results are shown in Table 2: Table 2 Anti-shrinkage performance test data record table ; Experimental conclusion: From the data in Table 2, it can be seen that the radial and weft shrinkage rates of the A01 group fabric are both small, indicating that the A01 group fabric has certain anti-shrinkage performance. By comparison, it is known that during the calcination treatment, the calcination parameters have a more obvious influence on the final anti-shrinkage performance of the fabric, and the synergistic foaming treatment of sericite with sodium dodecylbenzenesulfonate and sodium N-lauroylsarcosine and the loading of Selaginella extract and Hamamelis extract can significantly improve the anti-shrinkage performance of the fabric.

[0033] 3.3. Air permeability test According to the national standard "GB / T5433", the air permeability of the fabric samples in the experimental groups (Group A, Group A01, Group A02), the control groups (Groups D-1 to 6), and the blank group were tested using a fabric automatic air permeability meter (Model YG461G). The specific experimental parameters are: relative humidity 35%, ambient temperature 12℃, pressure difference 80Pa, air permeability area 30cm 2 The diameter of the air nozzle is 0.8 mm. Each of the above fabric samples is tested 20 times at different locations. The average value is taken as the final air permeability data and recorded in Table 3: Table 3 Air permeability test data record ; Experimental conclusion: Analysis of the data in Table 3 shows that the calcination parameter setting has a significant effect on the air permeability of the fabric. Modified sericite loaded with different plant extracts has almost no effect on the air permeability of the fabric. However, if the sericite is directly loaded with plant extracts without modification and added to polyamide fiber, the air permeability of the fabric will be significantly reduced. However, sericite treated with sodium dodecylbenzene sulfonate and sodium N-lauroyl sarcosine for synergistic foaming can significantly improve the air permeability of the fabric.

[0034] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A method for preparing a high-elastic cashmere blended fabric, characterized by: The steps include: Step 1: Soaking sericite in deionized water, adding sodium dodecylbenzenesulfonate, sodium N-lauroylsarcosinate and silica sol, stirring and mixing, fully foaming, drying, compressing and shaping, and then calcining and crushing to obtain modified sericite; Step 2: A silane coupling agent, a plant extract, anhydrous ethanol, and deionized water are mixed to obtain a soaking solution, the modified sericite is added to the soaking solution, the solution is soaked under heat preservation, and then dried to obtain the loaded modified sericite; The plant extracts, by weight, include 30-40 parts of Selaginella extract, 22-30 parts of Hamamelis virginiana extract, 10-18 parts of Artemisia argyi extract, 15-18 parts of Luffa fructus extract, and 8-15 parts of Aloe vera extract; Step 3: adding the loaded modified sericite to the polyamide fiber melt, extruding through a spinning nozzle and cooling and solidifying to obtain the modified polyamide fiber; Step 4: Blending the modified polyamide fiber, cashmere and cotton fiber to obtain a high-elastic cashmere blended yarn, and using the high-elastic cashmere blended yarn as the warp and weft to weave a high-elastic cashmere blended fabric.

2. The method for preparing a high-elastic cashmere blended fabric according to claim 1, wherein: In step 1, the particle size of the sericite is 420-480 mesh; The raw materials for preparing the modified sericite include, by weight, 50-60 parts of sericite, 2-5 parts of sodium dodecylbenzenesulfonate, 2-5 parts of sodium N-lauroylsarcosinate, 1-2 parts of silica sol, and 30-40 parts of deionized water.

3. The method for preparing a high-elastic cashmere blended fabric according to claim 1, wherein: In step 1, the calcination is specifically as follows: heating to 400-700°C at a rate of 6-10°C / min and keeping warm for 1-2 hours; heating to 1000-1300°C at a rate of 8-12°C / min and keeping warm for 2-4 hours, and then cooling with the furnace.

4. The method for preparing a high-elastic cashmere blended fabric according to claim 1, wherein: In step 2, every 100 g of modified sericite is soaked in 200-300 g of soaking solution, wherein the mass ratio of silane coupling agent, plant extract, anhydrous ethanol and deionized water in the soaking solution is 1:2-4:18:3; The silane coupling agent includes at least one of silane coupling agent A-186, silane coupling agent KH-560, and silane coupling agent KH-550.

5. The method for preparing a high-elastic cashmere blended fabric according to claim 1, wherein: In step 2, the temperature of the heat preservation soaking is 30-40°C, the time is 2-3 hours, and the rotation speed is 600-800r / min.

6. The method for preparing a high-elastic cashmere blended fabric according to claim 1, wherein: In step three, 70-100 g of supported modified sericite is added to every 1 kg of polyamide fiber melt.

7. The method for preparing a high-elastic cashmere blended fabric according to claim 1, wherein: In step 4, the mass ratio of the modified polyamide fiber, cashmere and cotton fiber is 1-2:1:

1.

8. A high-elastic cashmere blended fabric, characterized by: The invention is prepared by the preparation method according to any one of claims 1 to 7.