Machine washable wool outdoor fabric and preparation method thereof

Abstract

The invention relates to a machine washable wool outdoor fabric and a preparation method thereof, and relates to the technical field of fabric preparation, the machine washable wool outdoor fabric comprises a shell fabric obtained by weaving wool wrapped regenerated nylon yarns as warp and weft; wherein the shell fabric is subjected to dyeing and finishing treatment as follows: low-temperature dyeing is performed at the temperature of 60-80 DEG C, high-temperature setting finishing at the temperature of 120-150 DEG C is combined in the low-temperature dyeing process, and low-temperature dyeing is performed in a dyeing system doped with modified polythiol. A low-temperature dyeing process is adopted, and modified polymercaptan is doped into a dyeing system to serve as a dyeing auxiliary, so that the dyeing effect and the dyeing fastness of a dye can be improved, the strength of the fabric can be further improved, and meanwhile, the problem that the wool fabric is not resistant to machine washing and not easy to clean can be solved to a certain extent.

Description

Technical Field

[0001] The invention belongs to the technical field of fabric preparation, and in particular relates to a machine-washable wool outdoor fabric and a preparation method thereof. Background Art

[0002] Wool yarn is a high-grade fiber material commonly used in daily clothing. However, wool is weaker than other fibers, and wool fabrics are generally not machine washable and difficult to care for. There are problems of deformation, shrinkage and damage to clothing after washing. The above reasons lead to great limitations in its application in outdoor fabrics.

[0003] When developing outdoor fabrics for wool yarn, it is generally considered to blend the wool yarn with other high-strength fibers to obtain blended yarn, and then use the blended yarn to weave the fabric. This can give wool clothing outdoor wear functions while helping to give full play to the wool material's advantages such as moisture absorption, deodorization, light weight, and antibacterial.

[0004] In addition, conventional dyeing of wool fibers is carried out at a temperature above 98°C. Under the action of moisture and heat, wool fibers will expand to a certain extent and become looser, and dye molecules can easily diffuse into the fiber through the wool scale layer. However, high-temperature dyeing is not only energy-intensive and costly, but also destroys the protein molecules of wool fibers, reducing wool strength and elasticity, affecting the production rate and product feel. Compared with conventional dyeing, low-temperature dyeing of wool can reduce wool damage, yellowing and strong damage. However, low-temperature dyeing has the corresponding problems of poor dyeing effect and color fastness. Summary of the invention

[0005] The purpose of the present invention is to provide a machine washable wool outdoor fabric and a preparation method thereof in order to solve the above problems.

[0006] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0007] As a first aspect of the present invention, the present invention provides a machine washable wool outdoor fabric, which includes a surface cloth woven with wool wrapped around regenerated nylon yarn as warp and weft threads; wherein the surface cloth is subjected to the following dyeing and finishing treatments: low-temperature dyeing at 60-80°C and combined with high-temperature setting and finishing at 120-150°C during the low-temperature dyeing process, wherein the low-temperature dyeing is carried out in a dyeing system doped with modified polythiols.

[0008] As a further optimization solution of the present invention, the fiber composition of the surface cloth includes 65-75% wool and 25-35% regenerated nylon in terms of mass percentage.

[0009] As a further optimization scheme of the present invention, the amount of the modified polythiol added into the dyeing system is 2-6% of the mass of the surface cloth.

[0010] As a further optimization solution of the present invention, the structure of the fabric also includes a bio-based TPU film laminated on the outside of the surface fabric.

[0011] As a second aspect of the present invention, the present invention also provides a method for preparing the machine washable wool outdoor fabric as described above, which specifically comprises the following steps:

[0012] (1) firstly wrapping wool yarn with regenerated nylon yarn as a core to obtain wool-wrapped regenerated nylon yarn, and then weaving the wool-wrapped regenerated nylon yarn as warp and weft to obtain a face fabric;

[0013] (2) placing the fabric obtained in step (1) in a dyeing system doped with modified polythiol and performing low-temperature dyeing at 60-80° C., and performing high-temperature setting and finishing on the fabric at 100-120° C. during the low-temperature dyeing process;

[0014] (3) The machine washable wool outdoor fabric is obtained by subjecting the dyed and finished surface fabric to soaping, washing and drying.

[0015] As a further optimization scheme of the present invention, in step (1), the weaving density of the warp yarn is 50-75 yarns / inch, the weaving density of the weft yarn is 45-65 yarns / inch, and the weaving structure of the surface cloth is plain weave.

[0016] As a further optimization scheme of the present invention, in step (2), the specific process of the low-temperature dyeing treatment is to place the dough in a dyeing system according to a bath ratio of 1kg:40-50L, adjust the pH of the dyeing system to 4.5-5.5, set the dyeing temperature to 30-40°C, heat the temperature to 60-80°C at a heating rate of 1-3°C / min, and then dye for 60-100min.

[0017] As a further optimization scheme of the present invention, in step (2), the timing of the high temperature setting and finishing is 30-50 minutes after the surface fabric starts low temperature dyeing.

[0018] The beneficial effects of the present invention are:

[0019] (1) The yarn used in the fabric of the present invention is a wool-wrapped regenerated nylon yarn obtained by wrapping wool around a regenerated nylon yarn as a core. The high strength of the regenerated nylon yarn can make up for the problem of insufficient strength of the wool yarn, thereby giving wool clothing the function of outdoor wearing while giving full play to the advantages of wool material such as moisture absorption, deodorization, light weight, and antibacterial.

[0020] (2) The present invention adopts a low-temperature dyeing process and incorporates modified polythiol as a dyeing auxiliary agent into the dyeing system. The thiol group contained in the modified polythiol molecule can effectively open the disulfide cross-linking in the scale layer with a higher sulfur content, so that the wool structure becomes loose, and the dyeing effect and color fastness are improved. In addition, relying on the high molecular characteristics of the modified polythiol, when it is combined with the wool structure, it can further promote the improvement of the fabric strength.

[0021] (3) The present invention optimizes the dyeing system and combines low-temperature dyeing with high-temperature setting treatment to improve the fabric's resistance to machine washing deformation and shrinkage, thereby solving the problem of wool fabric's inability to withstand machine washing and difficulty in care to a certain extent. DETAILED DESCRIPTION

[0022] 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.

[0023] 1. Material description

[0024] In the following examples, any method not specified may be carried out according to conventional methods, and other materials, reagents, etc. used may be obtained through commercial channels unless otherwise specified.

[0025] Recycled nylon yarn and wool yarn were purchased from Shandong Huafang Spinning Co., Ltd.; bio-based TPU is a polyurethane elastomer formed by the polymerization of bio-based polyols and MDI, with the bio-based content of the polyols being about 65%, and the brand is BASF of Germany; lanaset dye (lanaset black B), penetrant JFC, amphoteric surfactant BS-12 and emulsifier TO-5 were purchased from Gaide Chemical; modified polythiol was purchased from Guangzhou Green New Materials Co., Ltd.

[0026] 2. Methods

[0027] 2.1. Preparation of fabric

[0028] According to the existing process of preparing core-spun yarn by ring spinning, wool-wrapped regenerated nylon yarn is obtained by wrapping wool yarn with regenerated nylon yarn as the core, the fineness of wool-wrapped regenerated nylon yarn is 100 metric count, and the fineness of regenerated nylon yarn and wool yarn is selected according to the fineness of wool-wrapped regenerated nylon yarn. The wool-wrapped regenerated nylon yarn is used as warp and weft to weave the surface cloth, the weaving density of the warp is 50-75 strands / inch, the weaving density of the weft is 45-65 strands / inch, the weaving structure is plain weave, and the fiber components in the prepared surface cloth include 65-75% wool and 25-35% regenerated nylon according to mass percentage.

[0029] In order to facilitate the optimization exploration of the dyeing and finishing process below, the weaving density of the warp yarn is preferably 60 strands / inch, and the weft yarn is preferably 50 strands / inch. The fiber components of the surface cloth prepared at this weaving density include 72% wool and 28% regenerated nylon in terms of mass percentage.

[0030] 2.2 Study on the influence of dyeing system on fabric dyeing performance

[0031] (1) Prepare a dyeing system. The basic formula of the dyeing system is shown in Table 1.

[0032] Table 1. Basic formula of dyeing system

[0033]

[0034] In order to explore the effect of the formula composition of the dyeing system on the performance of the fabric after dyeing and finishing, the modified polythiol was added to the basic formula of the dyeing system disclosed in Table 1 at 0.6%, 0.9% and 1.2% of the mass of the fabric to prepare dyeing system AC. In addition, DTT (dithiothreitol) was added to the basic formula of the dyeing system disclosed in Table 1 at 0.9% of the mass of the fabric to prepare dyeing system D. The dyeing system prepared according to the basic formula disclosed in Table 1 was recorded as the control dyeing system.

[0035] (2) Dyeing treatment

[0036] The pH of the dyeing system was adjusted to 5.5 using HAc-NaAc, and then the fabric was placed in different dyeing systems according to a bath ratio of 1 kg:50 L. The dyeing temperature was 40 ° C. The temperature was raised to 80 ° C at a heating rate of 3 ° C / min and then dyed for 60 minutes. Finally, the dyed and finished fabric was soaped, washed, and dried to obtain the machine washable wool outdoor fabric, which was recorded as fabric AD and control fabric 1.

[0037] In addition, in order to compare the low-temperature dyeing process with the high-temperature dyeing process, during the dyeing process, the dyeing system was prepared according to the basic formula disclosed in Table 1, and the dyeing temperature was increased to 100°C. The surface cloth prepared in this way was recorded as control surface cloth 2.

[0038] The prepared fabrics AD and control fabrics 1-2 were tested for K / S value, color fastness to washing and tensile strength. In addition, a commercially available 100% pure wool grey fabric was dyed in the same manner as fabric A to obtain a fabric and recorded as control fabric 3, and the K / S value, color fastness to washing and tensile strength were also tested.

[0039] The K / S value test uses the SF-600 computer colorimeter to measure the apparent color depth of each fabric, that is, the K / S value. The color measurement aperture is 6.6mm and the SCID 65 / 100°.

[0040] The color fastness to washing is measured according to GB / T 3921-2008 "Textiles - Color Fastness - Color Fastness to Washing with Soap" standard. The evaluation of color fastness to washing is carried out using SF-600 computer colorimeter and color matching instrument according to AATCC (D 65 The color fastness grade is assessed according to the requirements of the (light source) standard.

[0041] The tensile strength test uses a Q800 dynamic mechanical analyzer (DMA, TA Instruments, Inc., USA) to perform stress-strain tests on the fabric to determine the strength of the fabric. The sample is cut into strips of 30×10 mm and placed in a tensile fixture, with one end fixed and the other end movable with the fixture. The temperature is maintained at 20°C, the frequency is set to 1Hz, and the stress is applied to gradually increase from 0 at a rate of 5MPa / s, and the sample strain change is recorded until the sample breaks. The stress at the breaking point is taken as the tensile strength of the sample.

[0042] The results are shown in Table 2.

[0043] Table 2. Performance test results statistics

[0044]

[0045] As can be seen from Table 2, compared with the control fabric 1 in which no modified polythiol was added to the dyeing system, the dyeing system used by fabric AC added different amounts of modified polythiol. The results showed that fabric AC achieved better dyeing effect and dyeing fastness, and the effect increased with the increase of the amount. In addition, compared with the same amount of traditional DTT, modified polythiol can better improve the dyeing effect of fabrics.

[0046] In addition, traditional high-temperature dyeing will lose the strength of wool fibers. The control face fabric 2 adopts the traditional high-temperature dyeing process, and its tensile strength is not as good as that of the control face fabric 1. In addition, compared with face fabrics AD, it can be seen that the use of DTT in the dyeing system does not promote the improvement of the tensile strength of the face fabric, while the use of modified polythiols has a positive effect on the improvement of the tensile strength of the face fabric, thereby ensuring the mechanical properties of the face fabric.

[0047] 2.3. Study on the influence of dyeing and finishing on fabric properties

[0048] During step 2.2, the fabric is processed as follows:

[0049] Treatment 1: During the low-temperature dyeing process of surface fabric B, high-temperature setting finishing is performed on surface fabric B at 100°C. The high-temperature setting finishing is to place the surface fabric in a heat setting machine for 60 seconds. The timing of high-temperature setting finishing is 30 minutes after the low-temperature dyeing of surface fabric B begins.

[0050] Treatment 2: During the low-temperature dyeing process of surface fabric B, high-temperature setting finishing is performed on surface fabric B at 120°C. The high-temperature setting finishing is to place the surface fabric in a heat setting machine for 60 seconds. The timing of high-temperature setting finishing is 30 minutes after surface fabric B starts low-temperature dyeing.

[0051] Treatment 3: After the low-temperature dyeing of the surface fabric B is completed, the surface fabric B is subjected to high-temperature setting finishing at 100°C. The high-temperature setting finishing is to place the surface fabric in a heat setting machine for 60 seconds.

[0052] Treatment 4: During the low-temperature dyeing process of the surface fabric D, the same high-temperature setting finishing as treatment 1 is performed.

[0053] Treatment 5: During the low-temperature dyeing process of the control fabric 1, the same high-temperature setting finishing as treatment 1 was performed.

[0054] The fabrics obtained by soaping, washing and drying the fabrics after treatment 1 to treatment 5 are recorded as fabric ae.

[0055] In addition, a bio-based TPU film is further compounded on the outer side of the prepared fabric a by adhesive, and the prepared fabric is recorded as fabric f. The fabric a that has not been subjected to high-temperature setting treatment is recorded as fabric g.

[0056] The fabric af was tested for its shrinkage. With reference to the GB8629.2001 and ISWTMNO.31 test standards, a fully automatic shrinkage tester was used to test the machine washing felt shrinkage of the fabric samples. The base fabric AD and the control group were cut into a specification of 500mm×500mm, and 3 groups of marks were made in the warp and weft directions of the sample respectively. Before the test, the distance between the marks was measured to calculate the marked area, which was used as the original size S0 of the fabric. The fabric samples were then washed according to the standard procedure (7A+3×5A), and the washing temperature was set to 40°C. After the test, the fabric samples were balanced under standard atmospheric conditions (temperature 20±1°C, relative humidity 65±5%) for 48 hours, and the distance between the marks was measured again to calculate the area S of the fabric after washing. l The felt shrinkage of the fabric is calculated using the following formula: Felting rate S% = (S0-S1) / S o ×100%.

[0057] The results are shown in Table 3.

[0058] Table 3. Felting test results

[0059]

[0060] It can be seen from Table 3 that compared with the control fabric 1, the felt shrinkage rate of fabric ab is lower after testing. It can be seen that high-temperature shaping treatment has a positive effect on the fabric's resistance to machine washing deformation and shrinkage.

[0061] At the same time, compared with fabrics ab, it can be seen that the timing of high-temperature shaping treatment of fabric c has an impact on the improvement of the fabric's resistance to machine washing deformation and shrinkage. High-temperature shaping treatment during low-temperature dyeing is helpful to improve the fabric's resistance to machine washing deformation and shrinkage. In addition, compared with fabrics ab, it can be seen that the modified polythiol added to the dyeing system during low-temperature dyeing also has a positive effect on improving the fabric's resistance to machine washing deformation and shrinkage.

[0062] In addition, the bio-based TPU film is further compounded on the outer side of the prepared fabric a through adhesive, and the prepared fabric f also has a lower fabric felt shrinkage rate. It can be seen that the film processing on the fabric can further reduce the felt shrinkage rate of the fabric after washing, and the fabric's resistance to machine washing deformation and shrinkage is further improved.

[0063] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. A machine washable wool outdoor fabric, characterized in that: The machine washable wool outdoor fabric includes a surface fabric obtained by weaving wool wrapped with regenerated nylon yarn as warp and weft; wherein the surface fabric is subjected to the following dyeing and finishing treatments: low-temperature dyeing at 60-80°C and combined with high-temperature setting and finishing at 120-150°C during the low-temperature dyeing process, wherein the low-temperature dyeing is carried out in a dyeing system doped with modified polythiol.

2. The machine washable wool outdoor fabric according to claim 1, characterized in that: The fiber components of the face cloth include 65-75% wool and 25-35% regenerated nylon according to mass percentage.

3. The machine washable wool outdoor fabric according to claim 1, characterized in that: The modified polythiol is added in an amount of 0.6-1.2% of the mass of the surface cloth in the dyeing system.

4. The machine washable wool outdoor fabric according to claim 1, characterized in that: The structure of the fabric also includes a bio-based TPU film laminated on the outer side of the face fabric.

5. A method for preparing a machine washable wool outdoor fabric according to any one of claims 1 to 4, characterized in that: The specific steps include: (1) firstly wrapping wool yarn with regenerated nylon yarn as a core to obtain wool-wrapped regenerated nylon yarn, and then weaving the wool-wrapped regenerated nylon yarn as warp and weft to obtain a face fabric; (2) placing the fabric obtained in step (1) in a dyeing system doped with modified polythiol and performing low-temperature dyeing at 60-80° C., and performing high-temperature setting and finishing on the fabric at 100-120° C. during the low-temperature dyeing process; (3) The machine washable wool outdoor fabric is obtained by subjecting the dyed and finished surface fabric to soaping, washing and drying.

6. The method for preparing a machine washable wool outdoor fabric according to claim 5, characterized in that: In step (1), the weaving density of the warp yarn is 50-75 yarns / inch, the weaving density of the weft yarn is 45-65 yarns / inch, and the weaving structure of the surface fabric is plain weave.

7. The method for preparing a machine washable wool outdoor fabric according to claim 5, characterized in that: In step (2), the specific process of the low-temperature dyeing treatment is to place the surface in the dyeing system according to a bath ratio of 1kg:40-50L, adjust the pH of the dyeing system to 4.5-5.5, the dyeing temperature to 30-40°C, heat the temperature to 60-80°C at a heating rate of 1-3°C / min, and then dye for 60-100 minutes.

8. The method for preparing a machine washable wool outdoor fabric according to claim 7, characterized in that: In step (2), the timing of the high temperature setting and finishing is 30-50 minutes after the surface fabric begins low temperature dyeing.

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