Preparation process of hydrophobic down without fluorocarbons

Abstract

The present invention relates to a preparation process of hydrophobic down that does not contain fluorocarbon compounds. The process comprises the following steps: S1: gather down together, flatten the down with a pressing plate, and obtain flat down; S2: pre-treat the down with a laser to form holes on the down; S3: heat the down in S2 and put it into a container, add graphene material into the container, and vibrate the container so that the graphene material enters the holes of the down; S4: take the down in S3 out of the container and cool it to room temperature; S5: rub the down in S4 so that the down returns to a fluffy state; the present invention punches holes in the down body, fills the holes with a substance with a porous structure, and can absorb more air. When the down encounters water vapor, the air on the porous substance forms an air film to block the water vapor, thereby improving the hydrophobic performance of the down.

Description

Technical Field

[0001] The invention belongs to the technical field of down preparation, and in particular relates to a preparation process of hydrophobic down that does not contain fluorocarbon compounds. Background Art

[0002] Fluorocarbons are compounds obtained by replacing part or all of the hydrogen contained in hydrocarbons such as methan and athan with fluorine. Due to the strong carbon-fluorine bond in its molecular structure, fluorocarbons have strong waterproof properties, so they are mainly used in waterproof clothing.

[0003] The prior art method for improving the hydrophobicity of down is to coat the surface of the down with a water-repellent material. During long-term use, the water-repellent material will separate from the down, thereby causing a decrease in the hydrophobicity of the down. Summary of the invention

[0004] The purpose of the present invention is to provide a preparation process of hydrophobic down without fluorocarbons in order to solve the problems raised in the above background technology.

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

[0006] A process for preparing hydrophobic down without fluorocarbons comprises the following steps:

[0007] S1: Gather the down together and use a pressing plate to flatten the down to obtain flat down;

[0008] S2: Pre-treating the down with laser to form holes in the down;

[0009] S3: heating the down in S2 and putting it into a container, adding graphene material into the container, and shaking the container so that the graphene material enters the holes of the down;

[0010] S4: taking the down in S3 out of the container and cooling it to room temperature;

[0011] S5: Knead the down in S4 to make the down return to its fluffy state.

[0012] Preferably, the heating temperature in S3 is 80-100° C. and the heating time is 10-12 minutes. Heating can expand the diameter of the holes on the down, making it easier for the graphene material to enter.

[0013] Preferably, the cooling time in S4 is 1-5 seconds. A short cooling time can shrink the holes on the down quickly, so that the graphene material can be embedded in the holes and cannot fall out.

[0014] Preferably, the preparation method of the graphene material in S3 is specifically as follows: preparing a graphene tube, forming a hole in the graphene tube, and obtaining the graphene material. The prepared graphene material is tubular and porous.

[0015] Preferably, the graphene tube is produced by laser ablation, chemical vapor deposition or solid phase pyrolysis.

[0016] Preferably, the drilling technology is to etch the graphene plane using a laser, an ion beam or an electron beam.

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

[0018] The present invention punches holes on the down body and fills the holes with a substance with a porous structure, which can absorb more air. When the down encounters water vapor, the air on the porous substance forms an air film to block the water vapor, thereby improving the hydrophobicity of the down. During use, the porous substance is not easy to fall off from the down, thereby ensuring the long-term hydrophobicity of the down. DETAILED DESCRIPTION

[0019] 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.

[0020] Example 1

[0021] The present embodiment provides a process for preparing hydrophobic down without fluorocarbon compounds, comprising the following steps:

[0022] S1: Gather the down together and use a pressing plate to flatten the down to obtain flat down;

[0023] S2: Pre-treating the down with laser to form holes in the down;

[0024] S3: heating the down in S2 at 80° C. for 10 min and then placing it in a container, adding graphene material into the container, and shaking the container so that the graphene material enters the pores of the down;

[0025] S4: taking the down in S3 out of the container and cooling it to room temperature within 1 second;

[0026] S5: Knead the down in S4 to make the down return to its fluffy state.

[0027] The preparation method of the graphene material is specifically as follows: a graphene tube is prepared by using one of laser ablation, chemical vapor deposition or solid phase pyrolysis, and the graphene tube is etched by using a laser, ion beam or electron beam to form a hole to obtain the graphene material.

[0028] Example 2

[0029] The present embodiment provides a process for preparing hydrophobic down without fluorocarbon compounds, comprising the following steps:

[0030] S1: Gather the down together and use a pressing plate to flatten the down to obtain flat down;

[0031] S2: Pre-treating the down with laser to form holes in the down;

[0032] S3: heating the down in S2 at 90° C. for 11 min and then placing it in a container, adding graphene material into the container, and shaking the container so that the graphene material enters the pores of the down;

[0033] S4: taking the down in S3 out of the container and cooling it to room temperature within 3 seconds;

[0034] S5: Knead the down in S4 to make the down return to its fluffy state.

[0035] The preparation method of the graphene material is specifically as follows: a graphene tube is prepared by using one of laser ablation, chemical vapor deposition or solid phase pyrolysis, and the graphene tube is etched by using a laser, ion beam or electron beam to form a hole to obtain the graphene material.

[0036] Example 3

[0037] The present embodiment provides a process for preparing hydrophobic down without fluorocarbon compounds, comprising the following steps:

[0038] S1: Gather the down together and use a pressing plate to flatten the down to obtain flat down;

[0039] S2: Pre-treating the down with laser to form holes in the down;

[0040] S3: heating the down in S2 at 100° C. for 12 min and then placing it in a container, adding graphene material into the container, and shaking the container so that the graphene material enters the pores of the down;

[0041] S4: taking the down in S3 out of the container and cooling it to room temperature within 5 seconds;

[0042] S5: Knead the down in S4 to make the down return to its fluffy state.

[0043] The preparation method of the graphene material is specifically as follows: a graphene tube is prepared by using one of laser ablation, chemical vapor deposition or solid phase pyrolysis, and the graphene tube is etched by using a laser, ion beam or electron beam to form a hole to obtain the graphene material.

[0044] Comparative Example 1

[0045] The present embodiment provides a process for preparing hydrophobic down without fluorocarbon compounds, comprising the following steps:

[0046] S1: Gather the down together and use a pressing plate to flatten the down to obtain flat down;

[0047] S2: Pre-treating the down with laser to form holes in the down;

[0048] S3: heating the down in S2 at 100° C. for 12 min and then placing it in a container, adding graphene material into the container, and shaking the container so that the graphene material enters the pores of the down;

[0049] S4: taking the down in S3 out of the container and cooling it to room temperature within 5 seconds;

[0050] S5: Knead the down in S4 to make the down return to its fluffy state.

[0051] The preparation method of the graphene material is specifically: using one of laser ablation, chemical vapor deposition or solid phase pyrolysis to prepare a graphene tube to obtain the graphene material.

[0052] Comparative Example 2

[0053] The present embodiment provides a process for preparing hydrophobic down without fluorocarbon compounds, comprising the following steps:

[0054] S1: Gather the down together and use a pressing plate to flatten the down to obtain flat down;

[0055] S2: Pre-treating the down with laser to form holes in the down;

[0056] S3: heating the down in S2 at 100° C. for 12 min and then placing it in a container, adding graphene material into the container, and shaking the container so that the graphene material enters the pores of the down;

[0057] S4: taking the down in S3 out of the container and cooling it to room temperature within 5 seconds;

[0058] S5: Knead the down in S4 to make the down return to its fluffy state.

[0059] The preparation method of the graphene material is specifically as follows: a graphene plate is prepared, and the graphene plate is etched by laser, ion beam or electron beam to form a hole, so as to obtain the graphene material.

[0060] Blank Group

[0061] Compared with Example 3, the blank group is untreated down.

[0062] This comparative example provides a hydrophobic down feather containing no fluorocarbon, including down feather.

[0063] In order to verify the product performance of the present invention, the product waterproof test is carried out as follows:

[0064] Each group took 200 grams of processed down, put the down into clean water, soaked for 10 minutes and then took it out. The total weight of each group of down was measured when there were no water drops on the down, and the water absorption rate was calculated. The water absorption rate was calculated using the following formula:

[0065] W=(BG) / G×100%

[0066] in:

[0067] W——Water absorption

[0068] B——Weight after soaking

[0069] G——weight before soaking

[0070] The results are shown in Table 1 below.

[0071] Table 1: Water absorption test results

[0072]

[0073] It can be seen from Table 1 that the hydrophobicity of down with added graphene material is significantly improved compared with that of down without added graphene; the graphene materials with curled structure and porous structure have better hydrophobicity than the flat and non-porous graphene materials.

[0074] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it 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, which all belong to the protection scope of the present invention.

Claims

1. A process for preparing hydrophobic down without fluorocarbons, characterized in that: The following steps are involved: S1: Gather the down together and use a pressing plate to flatten the down to obtain flat down; S2: Pre-treating the down with laser to form holes in the down; S3: heating the down in S2 and putting it into a container, adding graphene material into the container, and shaking the container so that the graphene material enters the holes of the down; The preparation method of the graphene material is specifically as follows: preparing a graphene tube, forming a drill hole on the graphene tube, and obtaining the graphene material; S4: taking the down in S3 out of the container and cooling it to room temperature; S5: Knead the down in S4 to make the down return to its fluffy state.

2. The process for preparing hydrophobic down without fluorocarbons according to claim 1, characterized in that: The heating temperature in S3 is 80-100° C. and the heating time is 10-12 min.

3. The process for preparing hydrophobic down without fluorocarbons according to claim 1, characterized in that: The cooling time in S4 is 1-5s.

4. The process for preparing hydrophobic down without fluorocarbons according to claim 1, characterized in that: The graphene tubes are produced by laser ablation, chemical vapor deposition or solid phase pyrolysis.

5. The process for preparing hydrophobic down without fluorocarbons according to claim 1, characterized in that: The drilling technology is to etch the graphene plane using laser, ion beam or electron beam.

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