A bio-based environmentally friendly fabric based on corn stalks and its preparation method

Abstract

This invention relates to a bio-based environmentally friendly fabric made from corn stalks and its preparation method. The preparation method includes the following steps: S1: injecting a growth agent into the vascular bundles of the corn stalks during their growth process to thicken the vascular bundle walls; S2: injecting a toughening agent into the vascular bundles when the corn stalks stop growing to enhance their toughness; S3: separating the vascular bundles from the corn stalks; S4: using the vascular bundles in the corn stalks for weaving to obtain the bio-based fabric. This invention induces the modification of the vascular bundle structure of corn stalks, altering their physical properties. The treated vascular bundle structure is used to make the fabric base layer, which is then laminated with a waterproof and breathable membrane to obtain an environmentally friendly fabric that is easily degradable and has waterproof, breathable, lightweight, and resilient properties. This reduces the use of petroleum and the emission of pollutants, and also treats the corn stalks, contributing to environmental protection.

Description

Technical Field

[0001] This invention belongs to the field of bio-based fabric preparation technology, specifically relating to a bio-based environmentally friendly fabric based on corn stalks and its preparation method. Background Technology

[0002] Bio-based sustainable fabrics, as an environmentally friendly material, are gradually receiving more and more attention. Bio-based sustainable fabrics are materials made from natural plant or animal fibers, recycled fibers or biodegradable polymers, which reduce the consumption of natural resources.

[0003] Several technical solutions for bio-based fabrics have emerged in the existing technology field. For example, a Chinese patent with publication number CN113696602B discloses a method for preparing bio-based fabrics. This method involves composited bio-based nylon layers, a waterproof and breathable membrane, and a voile base fabric to create a novel fabric. This fabric possesses waterproof, breathable, and lightweight properties, offering consumers excellent adaptability. This new fabric reduces the use of petroleum-based synthetic fibers. Garments made from this fabric are soft and comfortable, windproof, waterproof, and breathable, and the fabric has good abrasion resistance, easily handling various outdoor environments.

[0004] However, the bio-based nylon layer used in this patent has poor degradation performance, making the bio-based fabric difficult to degrade and thus prone to environmental damage. In addition, the fabric is not tough enough and has poor resilience. Summary of the Invention

[0005] The purpose of this invention is to provide a bio-based environmentally friendly fabric based on corn stalks and its preparation method in order to solve the problems mentioned in the background art.

[0006] The present invention achieves the above objectives through the following technical solutions:

[0007] A method for preparing a bio-based environmentally friendly fabric based on corn stalks includes the following steps:

[0008] S1: During the growth process of corn stalks, a growth agent is injected into their vascular bundles to thicken the vascular bundle walls. The thickened vascular bundle walls make the corn stalk vascular bundles less prone to breakage and increase their strength.

[0009] S2: When the corn stalk stops growing, a toughening agent is injected into its vascular bundles to enhance their toughness, which in turn increases the strength of the vascular bundles.

[0010] S3: Separate the tubing from the corn stalk;

[0011] S4: Using the vascular bundles in corn stalks for spinning to produce bio-based fabrics, the vascular bundles can be radially cut to form thin strips, which can then be spun into yarn and woven.

[0012] S5: By sewing a waterproof and breathable membrane together with a bio-based fabric, an environmentally friendly fabric is obtained. The waterproof and breathable membrane is a new type of polymer waterproof material. It uses polyurethane (TPU) as the main material and incorporates hydrophilic groups. The membrane surface has no micropores, thus providing windproof and water-repellent properties.

[0013] Preferably, the growth agent in S1 is zucchini extract, and its extraction method includes the following steps:

[0014] A: Crush the zucchini and soak it in a 65% ethanol solution;

[0015] B: Filter out the zucchini, heat the remaining liquid to obtain zucchini extract, dilute the zucchini extract with water and inject it into the conduit of the corn stalk. Part of the zucchini extract is absorbed by the conduit, and part of it accumulates on the surface of the conduit, which can thicken the conduit wall of the corn stalk.

[0016] Preferably, in S1, the growth agent is injected after the corn stalks have grown to 50cm in height. Injecting the growth agent too early can affect the normal transport function of the corn stalk conduits, causing the conduits to be directly blocked.

[0017] Preferably, the toughening agent in S2 is polyethylene or polyamide. The toughening agent can enhance the strength of the plant stem, making the corn stalk more resilient.

[0018] Preferably, the method for separating the catheter in S3 includes the following steps:

[0019] a: Bake the corn stalks to remove moisture;

[0020] b: Beating and squeezing the corn stalks can easily separate the vascular bundles from other tissues of the corn, making it easier to collect the vascular bundles;

[0021] c: Remove the tube from the corn stalk.

[0022] Preferably, the drying temperature of S3 is 80-100 degrees Celsius, and the drying time is 2-3 hours.

[0023] A bio-based environmentally friendly fabric based on corn stalks is prepared by the above-mentioned method.

[0024] The beneficial effects of this invention are as follows:

[0025] This invention induces the vascular tissue of corn stalks to change their physical properties. The treated vascular tissue is then used to make a fabric base layer, which is then laminated with a waterproof and breathable membrane to obtain an environmentally friendly fabric that is easily degradable and has waterproof, breathable, lightweight, and resilient properties. This reduces the use of petroleum and the emission of pollutants, and also treats corn stalks, thus contributing to environmental protection. Detailed Implementation

[0026] The present application will now be described in further detail. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0027] Example 1

[0028] A method for preparing a bio-based environmentally friendly fabric based on corn stalks includes the following steps:

[0029] S1: Crush the zucchini, soak it in a 65% ethanol solution, filter the zucchini, heat the remaining liquid to obtain zucchini extract, and inject the zucchini extract into the conduit of the corn stalk after it has grown to 50cm in height.

[0030] S2: Inject polyethylene into the conduit of the corn stalk when it stops growing;

[0031] S3: Bake the corn stalks to remove moisture. The baking temperature is 80 degrees Celsius and the drying time is 2 hours. After drying, beat and squeeze the corn stalks, and then remove the tubes from the corn stalks.

[0032] S4: Using the vascular bundles in corn stalks for spinning to produce bio-based fabrics;

[0033] S5: By sewing a waterproof and breathable membrane together with a bio-based fabric, an environmentally friendly fabric is obtained.

[0034] Example 2

[0035] A method for preparing a bio-based environmentally friendly fabric based on corn stalks includes the following steps:

[0036] S1: Crush the zucchini, soak it in a 65% ethanol solution, filter the zucchini, heat the remaining liquid to obtain zucchini extract, and inject the zucchini extract into the conduit of the corn stalk after it has grown to 50cm in height.

[0037] S2: Inject polyethylene into the conduit of the corn stalk when it stops growing;

[0038] S3: Bake the corn stalks to remove moisture. The baking temperature is 90 degrees Celsius and the drying time is 2.5 hours. After drying, beat and squeeze the corn stalks, and then remove the tubes from the corn stalks.

[0039] S4: Using the vascular bundles in corn stalks for spinning to produce bio-based fabrics;

[0040] S5: By sewing a waterproof and breathable membrane together with a bio-based fabric, an environmentally friendly fabric is obtained.

[0041] Example 3

[0042] A method for preparing a bio-based environmentally friendly fabric based on corn stalks includes the following steps:

[0043] S1: Crush the zucchini, soak it in a 65% ethanol solution, filter the zucchini, heat the remaining liquid to obtain zucchini extract, and inject the zucchini extract into the conduit of the corn stalk after it has grown to 50cm in height.

[0044] S2: Inject polyamide into the ducts of the corn stalk when it stops growing;

[0045] S3: Bake the corn stalks to remove moisture. The baking temperature is 100 degrees Celsius and the drying time is 3 hours. After drying, beat and squeeze the corn stalks, and then remove the tubes from the corn stalks.

[0046] S4: Using the vascular bundles in corn stalks for spinning to produce bio-based fabrics;

[0047] S5: By sewing a waterproof and breathable membrane together with a bio-based fabric, an environmentally friendly fabric is obtained.

[0048] Comparative Example 1

[0049] A method for preparing a bio-based environmentally friendly fabric based on corn stalks includes the following steps:

[0050] S1: Bake the corn stalks to remove moisture. The baking temperature is 80 degrees Celsius and the drying time is 2 hours. After drying, beat and squeeze the corn stalks, and then remove the tubes from the corn stalks.

[0051] S2: Using the vascular bundles in corn stalks for spinning to produce bio-based fabrics;

[0052] S3: By sewing a waterproof and breathable membrane together with a bio-based fabric, an environmentally friendly fabric is obtained.

[0053] Comparative Example 2

[0054] A method for preparing a bio-based environmentally friendly fabric based on corn stalks includes the following steps:

[0055] S1: After the corn stalks have grown to 50cm in height, inject water into their tubes;

[0056] S2: Inject polyethylene into the conduit of the corn stalk when it stops growing;

[0057] S3: Bake the corn stalks to remove moisture. The baking temperature is 80 degrees Celsius and the drying time is 2 hours. After drying, beat and squeeze the corn stalks, and then remove the tubes from the corn stalks.

[0058] S4: Using the vascular bundles in corn stalks for spinning to produce bio-based fabrics;

[0059] S5: By sewing a waterproof and breathable membrane together with a bio-based fabric, an environmentally friendly fabric is obtained.

[0060] Comparative Example 3

[0061] A method for preparing a bio-based environmentally friendly fabric based on corn stalks includes the following steps:

[0062] S1: Crush the zucchini, soak it in a 65% ethanol solution, filter the zucchini, heat the remaining liquid to obtain zucchini extract, and inject the zucchini extract into the conduit of the corn stalk after it has grown to 50cm in height.

[0063] S2: Inject water into the ducts of the corn stalk when it stops growing;

[0064] S3: Bake the corn stalks to remove moisture. The baking temperature is 80 degrees Celsius and the drying time is 2 hours. After drying, beat and squeeze the corn stalks, and then remove the tubes from the corn stalks.

[0065] S4: Using the vascular bundles in corn stalks for spinning to produce bio-based fabrics;

[0066] S5: By sewing a waterproof and breathable membrane together with a bio-based fabric, an environmentally friendly fabric is obtained.

[0067] Comparative Example 4

[0068] By sewing nylon fabric and a waterproof and breathable membrane together, an environmentally friendly fabric is obtained.

[0069] To verify the product performance of this invention, degradation and resilience tests were conducted as follows:

[0070] Degradability test: Fabrics were prepared using the methods of Examples 1-3 and Comparative Examples 1-4, and five pieces of fabric of the same size were cut from each group. The selected fabrics were placed in a frame with a mesh interlayer, and the fabrics were moistened with water under laboratory or outdoor conditions, and then buried. (The soil at the burial site was suitable for microbial survival). The soil was dug up at 5, 10, and 15 weeks to observe the condition of the fabric before burying it again. At week 20, the fabric was taken out and its weight was measured. The average value is shown in Table 1.

[0071] Resilience test: Fabrics were prepared using the methods of Examples 1-3 and Comparative Examples 1-4, and five pieces of fabric of the same size were cut for each group. One end of the selected fabric was fixed, and a weight was hung on the other end of the fabric to straighten it. After resting for 1 hour, the change in the length of the fabric was measured, and the average value is shown in Table 1.

[0072] Table 1

[0073]

[0074] Degradability test results: As can be seen from Table 1, the fabric prepared by this method can be rapidly degraded in the natural environment. Compared with ordinary bio-based fabrics, it has a faster degradation rate and can protect the environment.

[0075] Resilience test structure: As can be seen from Table 1, the bio-based fabric prepared using this method has better resilience performance than ordinary bio-based fabrics. However, as shown in Example 1 and Comparative Example 3, the resilience performance of the fabric deteriorates without the addition of a toughening agent.

[0076] There are no experimental results in Comparative Examples 1 and 2 because the methods used in Comparative Examples 1 and 2 cannot produce fabric. No growth agent was added in Comparative Examples 1 and 2, preventing the corn stalk vessels from further lignifying. This resulted in insufficient strength of the vessels, making it impossible to separate them from other tissues of the corn stalk, and thus, fabric could not be produced.

[0077] The embodiments described above are merely examples of several implementations of the present invention, and 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 those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A method for preparing a bio-based environmentally friendly fabric based on corn stalks, characterized in that, Includes the following steps: S1: During the growth of corn stalks, a growth agent is injected into their vascular bundles to thicken the vascular bundle walls; S2: When the corn stalk stops growing, a toughening agent is injected into its vascular bundles to enhance their toughness. S3: Separate the tubing from the corn stalk; S4: Using the vascular bundles in corn stalks for spinning to produce bio-based fabrics; S5: By sewing a waterproof and breathable membrane together with a bio-based fabric, an environmentally friendly fabric is obtained.

2. The method for preparing a bio-based environmentally friendly fabric based on corn stalks according to claim 1, characterized in that, The growth agent in S1 is zucchini extract, and its extraction method includes the following steps: A: Crush the zucchini and soak it in a 65% ethanol solution; B: Filter out the zucchini, heat the remaining liquid to obtain zucchini extract.

3. The method for preparing a bio-based environmentally friendly fabric based on corn stalks according to claim 2, characterized in that, In S1, growth hormone is injected after the corn stalks reach a height of 50cm.

4. The method for preparing a bio-based environmentally friendly fabric based on corn stalks according to claim 1, characterized in that, The toughening agent in S2 is polyethylene or polyamide.

5. The method for preparing a bio-based environmentally friendly fabric based on corn stalks according to claim 4, characterized in that, The method for separating the catheter in S3 includes the following steps: a: Bake the corn stalks to remove moisture; b: Beat and compress the corn stalks; c: Remove the tube from the corn stalk.

6. The method for preparing a bio-based environmentally friendly fabric based on corn stalks according to claim 5, characterized in that, The drying temperature for S3 is 80-100 degrees Celsius, and the drying time is 2-3 hours.

7. A bio-based environmentally friendly fabric based on corn stalks, which is prepared by the preparation method described in any one of claims 1-6.

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