All-environment-friendly water-repellent wool outdoor fabric and preparation method thereof

Abstract

The invention relates to a full-environment-friendly water-repellent wool outdoor fabric and a preparation method thereof, and relates to the technical field of fabric preparation, the full-environment-friendly water-repellent wool outdoor fabric is a woven fabric, and the weaving weave is plain weave; warp yarns and weft yarns of the all-environment-friendly water-repellent wool outdoor fabric are two-component composite yarns, the two-component composite yarns comprise wool yarns and bio-based environment-friendly two-component elastic yarns, the bio-based environment-friendly two-component elastic yarns are core yarns, and the wool yarns and the bio-based environment-friendly two-component elastic yarns are interwoven to form the all-environment-friendly water-repellent wool outdoor fabric. The wool yarns are mutually intertwined in opposite winding directions in a form of being divided into two strands and wrap the outer side of the bio-based environment-friendly two-component elastic yarn, and the twisting directions of the two strands of wool yarns are opposite. The fabric provided by the invention can give full play to the breathability, hygroscopicity and wearing comfort of the wool fiber material, and also has the outdoor wearability of good strength and excellent water repellent performance.

Description

Technical Field

[0001] The invention belongs to the technical field of fabric preparation, and in particular relates to a fully environmentally friendly water-repellent wool outdoor fabric and a preparation method thereof. Background Art

[0002] Wool fiber is a pure natural renewable fiber. Due to its excellent warmth retention, elasticity, hygroscopicity and other characteristics, it is often used in medium-thick winter clothing fabrics. With the growing demand for lightweight, comfortable and multifunctional clothing, in order to adapt to changes in market demand, new wool textile products are gradually developing towards light, easy-to-care casual sportswear. Because the strength of wool fiber is lower than that of other fibers, and its tear resistance is not as good as that of chemical fibers such as nylon and polyester, wool fiber has certain application limitations in outdoor sports fabrics. At present, it is generally considered to blend wool fiber with other high-strength fibers to obtain blended yarns, and then use the blended yarns to weave fabrics, which can not only give full play to the advantages of wool fiber such as moisture absorption, breathability and antibacterial, but also enhance its mechanical properties.

[0003] In addition, due to the excellent hygroscopicity of wool fibers, it is difficult to ensure the waterproofness of fabrics made of wool fibers. Currently, the waterproof finishing of fabrics is generally carried out by impregnating the fabrics with fluorine-containing finishing liquids or by composite waterproof functional films on the surface of the fabrics. However, the above two methods will cause the loss of the fabric's own properties such as moisture permeability and breathability, affecting its wearing performance. Summary of the invention

[0004] The purpose of the present invention is to provide a fully environmentally friendly water-repellent wool outdoor fabric and a preparation method thereof in order to solve the above-mentioned problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] As a first aspect of the present invention, the present invention provides an all-environmentally friendly water-repellent wool outdoor fabric, which is a woven fabric with a plain weave structure; the warp and weft yarns of the all-environmentally friendly water-repellent wool outdoor fabric are both two-component composite yarns, and the two-component composite yarns include wool yarn and bio-based environmentally friendly two-component stretch yarn, wherein the bio-based environmentally friendly two-component stretch yarn is the core yarn, and the wool yarn is divided into two strands and intertwined with each other in opposite winding directions and wrapped on the outside of the bio-based environmentally friendly two-component stretch yarn, and the twist directions of the two strands of wool yarn are oppositely arranged.

[0007] As a further optimization scheme of the present invention, the bio-based environmentally friendly two-component stretch yarn is made by melt spinning of the following raw materials in percentage by mass: 2-5% masterbatch, 1-5% nano titanium dioxide, 1-5% anionic surfactant and 1-5% antioxidant, and the balance is DuPont Sorona polymer.

[0008] As a further optimization scheme of the present invention, the fiber composition of the fabric includes 65-75% wool fiber and 25-35% bio-based environmentally friendly two-component stretch yarn in terms of mass percentage.

[0009] As a further optimization scheme of the present invention, the wool fiber is subjected to low-temperature dyeing treatment. The low-temperature dyeing process is to place the wool yarn in the dye solution according to a bath ratio of 1kg:40L, adjust the pH of the dye solution 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.

[0010] As a further optimization scheme of the present invention, the fiber composition of the wool silk outdoor fabric includes 35-45% wool fiber, 30-40% silk fiber and 15-35% bio-based nylon 510 fiber in terms of mass percentage.

[0011] As a second aspect of the present invention, the present invention also provides a method for preparing the fully environmentally friendly water-repellent wool outdoor fabric as described above, which specifically comprises the following steps:

[0012] (1) preparing wool yarn and bio-based environmentally friendly two-component stretch yarn, and spinning them into two-component composite yarn on a worsted spinning frame by using a core-spun yarn process, wherein the bio-based environmentally friendly two-component stretch yarn is used as the core yarn, and the bio-based environmentally friendly two-component stretch yarn is fed into the front roller jaws of the worsted spinning frame through a pressure roller and a guide roller, and the two strands of wool yarn are intertwined with each other in opposite winding directions and covered on the outside of the bio-based environmentally friendly two-component stretch yarn, and the twist directions of the two strands of wool yarn are ensured to be opposite;

[0013] (2) The two-component composite yarn obtained in step (1) is used as warp and weft yarns to form a grey cloth with a plain weave structure through a loom.

[0014] (3) The grey cloth prepared in step (2) is subjected to heat shrinkage treatment and drying to obtain the fully environmentally friendly water-repellent wool outdoor fabric.

[0015] As a further optimization scheme of the present invention, in step (2), the weaving density of the warp yarn is 50-75 yarns / inch, and the weaving density of the weft yarn is 45-65 yarns / inch.

[0016] As a further optimization scheme of the present invention, in step (3), the heat shrinkage treatment is to place the blank in 90-100° C. water and cook it for 20-30 minutes.

[0017] The beneficial effects of the present invention are:

[0018] (1) The fabric developed by the present invention is made of environmentally friendly materials. The warp and weft yarns used are two-component composite yarns composed of wool yarn and bio-based environmentally friendly two-component stretch yarn. The wool fiber is reinforced by the bio-based environmentally friendly two-component stretch yarn. The breathability, moisture absorption and wearing comfort of the wool fiber material can be fully utilized while giving the fabric better strength, thereby improving its outdoor wear performance.

[0019] (2) The present invention improves the wrapping process of wool yarn and bio-based environmentally friendly two-component stretch yarn during the spinning process of the two-component composite yarn, thereby strengthening the wrapping strength of the wool yarn on the outside of the bio-based environmentally friendly two-component stretch yarn and improving the density of the yarn structure, thereby improving the strength and water repellency of the fabric to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of spinning the two-component composite yarn in Example 1 provided by the present invention;

[0021] Figure 2 Schematic diagram of spinning two-component composite yarns in Comparative Example 2 (a), Comparative Example 3 (b) and Comparative Example 4 (c) provided by the present invention;

[0022] In the figure: A and A" are wool fibers; B is a bio-based environmentally friendly two-component stretch yarn. DETAILED DESCRIPTION

[0023] 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.

[0024] 1. Materials and Methods

[0025] 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.

[0026] The wool fiber used in the following embodiments is obtained by commercial means and is treated with low-temperature dyeing. The low-temperature dyeing process is as follows: the wool yarn is placed in a dye solution at a bath ratio of 1 kg:40 L, the pH of the dye solution is adjusted to 4.5-5.5, the dyeing temperature is 30-40 ° C, and the temperature is increased to 60-80 ° C at a heating rate of 1-3 ° C / min. After dyeing, the dyeing time is 60-100 min. As a further preferred low-temperature process, the dyeing temperature is 40 ° C, and the temperature is increased to 80 ° C at a heating rate of 1 ° C / min. After dyeing, the dyeing time is 60 min.

[0027] The bio-based environmentally friendly two-component stretch yarn used in the following examples is a masterbatch yarn, and the raw material of the DuPont Sorona polymer is produced by DuPont of the United States and is mainly made of 1,3-propylene glycol (PDO) and PTA (or DMT). Among them, PDO accounts for 37% of the total raw materials. The preparation method of the masterbatch yarn is as follows: firstly, nano titanium dioxide, antioxidant 1076 and anionic surfactant (sodium dodecylbenzene sulfonate) are blended with DuPont Sorona polymer accounting for 1 / 3 of the total amount according to the formula amount, and then mixed in a high-speed mixer and sent to a twin-screw granulator for blending and melt granulation, the melt temperature is 270°C, the masterbatch obtained by granulation is mixed with the remaining DuPont Sorona polymer and vacuum dried (vacuum degree is less than 0.2 mmHg, drying temperature is 120°C, time is 4h), and then, blended with the formula amount of masterbatch, the blend is sent to a melt spinning machine for spinning, and then after post-treatment such as drawing and cooling, the bio-based environmentally friendly two-component stretch yarn can be obtained. 2. Specific embodiments

[0029] Example 1

[0030] The fully environmentally friendly water-repellent wool outdoor fabric provided in this embodiment comprises, by weight percentage, 65% wool fiber and 35% bio-based environmentally friendly two-component stretch yarn, wherein the bio-based environmentally friendly two-component stretch yarn is made by melt spinning of the following raw materials in the following weight percentages: 2% masterbatch, 5% nano titanium dioxide, 1% anionic surfactant (sodium dodecylbenzene sulfonate), 5% antioxidant 1076, and the remainder is DuPont Sorona polymer.

[0031] The preparation method specifically comprises the following steps:

[0032] (1) The bio-based environmentally friendly two-component stretch yarn is spun into a 32-count S-twisted yarn with a twist of 1000 twists / m by a ring spinning machine, and then spun into a two-component composite yarn by a core-spun yarn process on a worsted spinning frame, and the linear density of the two-component composite yarn is 80 metric tons; wherein the bio-based environmentally friendly two-component stretch yarn is used as the core yarn, and the bio-based environmentally friendly two-component stretch yarn is fed into the front roller jaws through a pressure roller and a guide roller, and two strands of wool yarn (the linear density is determined according to the final obtained composite yarn) are spun into a two-component composite yarn. The linear density of the combined yarn is adjusted) and they are respectively wound on two hollow spindles. The two hollow spindles rotate in opposite ways, so that the two strands of wool yarn are intertwined with each other in opposite winding directions and wrapped around the outside of the bio-based environmentally friendly two-component stretch yarn. Before the two strands of wool yarn are wrapped around the outside of the bio-based environmentally friendly two-component stretch yarn, the two strands of wool yarn are twisted (twist degree is 231 twists / m), and the twisting directions of the two strands of wool yarn are ensured to be opposite. The spinning schematic diagram of the two-component composite yarn is shown in FIG. Figure 1 As shown;

[0033] (2) using the two-component composite yarn obtained in step (1) as warp and weft yarns to form a plain weave grey cloth through a loom, wherein the weaving density of the warp yarn is 50 yarns / inch and the weft yarn is 45 yarns / inch;

[0034] (3) The blank prepared in step (2) is placed in 100° C. water and boiled for 20 minutes for heat shrinkage treatment, and then dried to obtain the fully environmentally friendly water-repellent wool outdoor fabric.

[0035] Example 2

[0036] The fully environmentally friendly water-repellent wool outdoor fabric provided in this embodiment comprises, by weight percentage, 75% wool fiber and 25% bio-based environmentally friendly two-component stretch yarn, and the bio-based environmentally friendly two-component stretch yarn is made by melt spinning of the following raw materials in the following weight percentages: 5% masterbatch, 1% nano titanium dioxide, 5% anionic surfactant (sodium dodecylbenzene sulfonate), 1% antioxidant 1076, and the remainder is DuPont Sorona polymer.

[0037] The preparation method specifically comprises the following steps:

[0038] (1) Same as Example 1;

[0039] (2) using the two-component composite yarn obtained in step (1) as warp and weft yarns to form a plain weave grey cloth through a loom, wherein the weaving density of the warp yarn is 75 yarns / inch and the weft yarn is 65 yarns / inch;

[0040] (3) The blank prepared in step (2) is placed in 95° C. water and boiled for 25 minutes for heat shrinkage treatment, and then dried to obtain the fully environmentally friendly water-repellent wool outdoor fabric.

[0041] Example 3

[0042] The fully environmentally friendly water-repellent wool outdoor fabric provided in this embodiment comprises, by weight percentage, 70% wool fiber and 30% bio-based environmentally friendly two-component stretch yarn, and the bio-based environmentally friendly two-component stretch yarn is made by melt spinning of the following raw materials in the following weight percentages: 4% masterbatch, 2% nano titanium dioxide, 3% anionic surfactant (sodium dodecylbenzene sulfonate), 3% antioxidant 1076, and the remainder is DuPont Sorona polymer.

[0043] The preparation method specifically comprises the following steps:

[0044] (1) Same as Example 1;

[0045] (2) using the two-component composite yarn obtained in step (1) as warp and weft yarns to form a plain weave grey cloth through a loom, wherein the weaving density of the warp yarn is 60 yarns / inch and the weft yarn is 50 yarns / inch;

[0046] (3) The blank prepared in step (2) is placed in 90° C. water and boiled for 30 minutes for heat shrinkage treatment, and then dried to obtain the fully environmentally friendly water-repellent wool outdoor fabric.

[0047] 3. Verification Test

[0048] In order to explore the effect of the preparation method of the two-component composite yarn on the wearing performance of the fabric, the following comparative examples were set:

[0049] Comparative Example 1 is different from Example 1 in that commercially available polyester fiber is used instead of the bio-based environmentally friendly two-component stretch yarn in Example 1.

[0050] Comparative Example 2: The difference from Example 1 is that in step (1), during the spinning process of the two-component composite yarn, the twisting directions of the two strands of wool yarn are ensured to be the same. The schematic diagram of the spinning of the two-component composite yarn is as follows: Figure 2 (a) shown.

[0051] Comparative Example 3: The difference from Example 1 is that in step (1), the bio-based environmentally friendly two-component stretch yarn is spun into a 32-count S-twisted yarn with a twist of 1000 twists / m by a ring spinning machine, and is spun into a two-component composite yarn by a core-spun yarn process on a worsted spinning frame, and the linear density of the two-component composite yarn is 80 metric tons; wherein the bio-based environmentally friendly two-component stretch yarn is used as the core yarn, the bio-based environmentally friendly two-component stretch yarn is fed into the front roller jaws through a pressure roller and a guide roller, and two strands of wool yarn (the linear density is adjusted according to the linear density of the composite yarn finally obtained) are respectively wound on two hollow spindles, and the two hollow spindles rotate in opposite ways, so that the two strands of wool yarn are intertwined with each other in opposite winding directions and coated on the outside of the bio-based environmentally friendly two-component stretch yarn. The spinning schematic diagram of the two-component composite yarn is as shown in Figure 2 (b) as shown.

[0052] Comparative Example 4: The difference from Example 1 is that in step (1), the bio-based environmentally friendly two-component stretch yarn is spun into a 32-count S-twisted yarn with a twist of 1000 twists / m by a ring spinning machine, and is spun into a two-component composite yarn by a core-spun yarn process on a worsted spinning frame, and the linear density of the two-component composite yarn is 80 metric counts; wherein the bio-based environmentally friendly two-component stretch yarn is used as the core yarn, the bio-based environmentally friendly two-component stretch yarn is fed into the front roller jaws through a pressure roller and a guide roller, and the wool yarn (the linear density is adjusted according to the linear density of the composite yarn finally obtained) is respectively wound on the hollow spindle, and the hollow spindle is rotated to intertwine the wool yarn and cover it on the outside of the bio-based environmentally friendly two-component stretch yarn. Before the wool yarn is covered on the outside of the bio-based environmentally friendly two-component stretch yarn, the wool yarn is twisted (the twist is 231 twists / m). The spinning schematic diagram of the two-component composite yarn is as shown in Figure 2 (c) as shown.

[0053] Comparative Example 5: The difference from Example 1 is that Comparative Example 3 does not undergo the heat shrinkage treatment in step (3).

[0054] The fabrics prepared in Examples 1-3 and Comparative Examples 1-5 were subjected to the following wearing performance tests.

[0055] (1) Air permeability test: Refer to GB / T5453-1997 "Determination of air permeability of textile fabrics" standard, and use YG461E-III fully automatic air permeability meter to test the air permeability of fabrics. The specific experimental parameters are set as follows: ambient temperature 25℃, relative humidity 60%, pressure difference 100Pa, air permeability area 20cm 2 , the diameter of the air nozzle is 0.8mm. The fabric samples were tested 10 times at different locations, and the average value was taken as the final air permeability data. In addition, 100% wool fabric (yarn count of 80, yarn twist of 1000 twists / m, S twist) was used as a control group to undergo the same test treatment as above. The results are shown in Table 1.

[0056] Table 1. Statistics of air permeability test results

[0057]

[0058] As can be seen from Table 1, compared with the 100% pure wool fabric in the control group, the air permeability of the fabrics in Example 1 and Comparative Examples 1-5 has decreased to a certain extent. It can be seen that the addition of bio-based environmentally friendly two-component stretch yarn will affect the air permeability of wool blended fabrics to a certain extent. In addition, by comparing Example 1 with Comparative Examples 2-4, it can be seen that the spinning form of the two-component composite yarn will affect the air permeability of the fabric finally prepared, because different spinning forms change the organizational structure of the two-component composite yarn and thus affect the organizational density of the fabric. By comparing Example 1 with Comparative Example 5, it can be seen that whether the grey cloth has been heat-shrunk will also affect the air permeability of the fabric, because the wool yarn outside the two-component composite yarn has shrinkage, and after the heat-shrunk treatment, the yarn shrinks, resulting in an increase in the organizational density of the fabric, and then the air permeability decreases to a certain extent.

[0059] (2) Tear resistance test: The test was conducted according to GB / T3917-1:2009 "Tear properties of fabrics - Part 1 - Determination of tear strength by impact pendulum method". In addition, a commercially available 100% wool fabric (yarn count of 80, yarn twist of 1000 twists / m, S twist) was used as a control group and subjected to the same test treatment as above. The results are shown in Table 2.

[0060] Table 2. Tear resistance test results statistics

[0061]

[0062] As can be seen from Table 2, compared with 100% pure wool fabric, the tear resistance of the fabrics of Examples 1-3 and Comparative Examples 1-5 is better than that of the control group. It can be seen that the addition of bio-based environmentally friendly two-component stretch yarn can improve the strength of wool blended fabrics and overcome the problem of poor mechanical properties of pure wool fabrics. The fabric can give full play to the advantages of wool materials such as moisture absorption, deodorization, light weight, and antibacterial, and its strength is also guaranteed. By comparing Examples 1-3 with Comparative Examples 2-4, it can be seen that the spinning form of the two-component composite yarn will have an impact on the strength of the fabric finally prepared. When the two-component composite yarn is spun in Example 1-3, two strands of wool yarn are intertwined with each other in opposite winding directions and wrapped on the outside of the bio-based environmentally friendly two-component stretch yarn. At the same time, the two strands of wool yarn are twisted in opposite twist directions, which can strengthen the wrapping strength of the wool yarn on the outside of the bio-based environmentally friendly two-component stretch yarn, strengthen the density of the yarn structure, and thus improve the strength of the fabric to a certain extent. In addition, by comparing Example 1 with Comparative Example 5, it can be seen that the grey cloth can obtain better tear strength by improving its own structural density after heat shrinkage treatment.

[0063] (3) Water repellency test: The test was conducted according to ISO 4920:2012 "Determination of the resistance of textile fabrics to water splashing". In addition, a commercially available 100% wool fabric (yarn count of 80, yarn twist of 1000 twists / m, S twist) was used as a control group and subjected to the same test treatment as above.

[0064] The test method is to spray the sample with distilled or deionized water. The sample is mounted on a retaining ring and placed at a 45° angle to the horizontal plane, with the center of the sample located below the nozzle. The water level is assessed by comparing the appearance of the sample with the assessment criteria and pictures. The levels range from 0 to 5, where 0-both sides of the sample are completely wetted; 1-the entire surface of the sprayed surface is wetted; 2-half of the sprayed surface is wetted; 3-only a small discontinuous area of ​​the sprayed surface is wetted; 4-the sprayed surface is not wetted, but there are small water droplets on the sprayed surface; 5-the sprayed surface is not wetted, and there are no small water droplets on the sprayed surface. Level 5 indicates the best waterproof performance.

[0065] The test results are shown in Table 3.

[0066] Table 3. Statistics of water repellent test results

[0067]

[0068] As can be seen from Table 3, the water repellency of the 100% pure wool fabric in the control group is low, because wool fibers have excellent hygroscopicity. When the water repellent test is performed, the sprayed surface is wetted by the wool fibers after contacting water droplets. The fabrics of Examples 1-3 have a water repellency level of 4, and the felt shrinkage rate of the fabrics after testing is lower than that of Example 1, which is better than that of Comparative Examples 3-5, and equivalent to Comparative Example 2. The water repellency of the fabric can be improved by intertwining two strands of wool yarn in opposite winding directions and wrapping them on the outside of the bio-based environmentally friendly two-component stretch yarn, and twisting the two strands of wool yarn. However, since Comparative Example 5 does not perform heat shrinkage treatment on the grey cloth, the density of the fabric is not as good as that of Example 1, so the water repellency is not as good as that of Examples 1-3.

[0069] 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 fully environmentally friendly water-repellent wool outdoor fabric, characterized by: The all-environmentally friendly water-repellent wool outdoor fabric is a woven fabric with a plain weave structure; the warp and weft yarns of the all-environmentally friendly water-repellent wool outdoor fabric are both two-component composite yarns, and the two-component composite yarns include wool yarn and bio-based environmentally friendly two-component stretch yarn, wherein the bio-based environmentally friendly two-component stretch yarn is the core yarn, and the wool yarn is divided into two strands, which are intertwined with each other in opposite winding directions and wrapped around the outside of the bio-based environmentally friendly two-component stretch yarn, and the twist directions of the two strands of wool yarn are oppositely arranged.

2. The fully environmentally friendly water-repellent wool outdoor fabric according to claim 1, characterized in that: The bio-based environmentally friendly two-component stretch yarn is made by melt spinning from the following raw materials in percentage by mass: 2-5% masterbatch, 1-5% nano titanium dioxide, 1-5% anionic surfactant and 1-5% antioxidant, and the balance is DuPont Sorona polymer.

3. The fully environmentally friendly water-repellent wool outdoor fabric according to claim 1, characterized in that: The fiber components of the fabric include 65-75% wool fiber and 25-35% bio-based environmentally friendly two-component stretch yarn in terms of mass percentage.

4. The fully environmentally friendly water-repellent wool outdoor fabric according to claim 1, characterized in that: The wool fiber is subjected to low-temperature dyeing treatment. The low-temperature dyeing process comprises placing the wool yarn in a dye solution at a bath ratio of 1kg:40L, adjusting the pH of the dye solution to 4.5-5.5, setting the dyeing temperature to 30-40°C, heating the solution to 60-80°C at a heating rate of 1-3°C / min, and then dyeing the solution for 60-100 minutes.

5. A method for preparing the environmentally friendly water-repellent wool outdoor fabric according to any one of claims 1 to 4, characterized in that: The specific steps include: (1) preparing wool yarn and bio-based environmentally friendly two-component stretch yarn, and spinning them into two-component composite yarn on a worsted spinning frame by using a core-spun yarn process, wherein the bio-based environmentally friendly two-component stretch yarn is used as the core yarn, and the bio-based environmentally friendly two-component stretch yarn is fed into the front roller jaws of the worsted spinning frame through a pressure roller and a guide roller, and the two strands of wool yarn are intertwined with each other in opposite winding directions and covered on the outside of the bio-based environmentally friendly two-component stretch yarn, and the twist directions of the two strands of wool yarn are ensured to be opposite; (2) using the two-component composite yarn obtained in step (1) as warp and weft yarns to form a grey cloth with a plain weave structure through a loom; (3) The grey cloth prepared in step (2) is subjected to heat shrinkage treatment and drying to obtain the fully environmentally friendly water-repellent wool outdoor fabric.

6. The method for preparing the fully environmentally friendly water-repellent wool outdoor fabric according to claim 5, characterized in that: In step (2), the weaving density of the warp yarn is 50-75 yarns / inch, and the weaving density of the weft yarn is 45-65 yarns / inch.

7. The method for preparing an environmentally friendly water-repellent wool outdoor fabric according to claim 5, characterized in that: In step (3), the heat shrinkage treatment is to place the blank in 90-100° C. water and cook it for 20-30 minutes.

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