Antistatic and flame-resistant casein-based graphene composite fabric and preparation method thereof

Abstract

The invention specifically relates to an antistatic and flame-resistant casein-based graphene composite fabric and a preparation method thereof. First, graphene oxide (GO) was prepared by the improved Hummers method, and the GO solution was prepared to make it negatively charged; then, the casein was dissolved by caprolactam-modified acid to make it positively charged; finally, the layer-by-layer self-assembly method was used in the Introducing nanoparticle graphene into the casein matrix to prepare antistatic and flame-resistant casein-based GO composite fabrics, and then using NaBH 4 After reduction, the final product is an antistatic and flame-resistant casein-based graphene composite fabric. The antistatic and flame-resistant casein-based graphene composite fabric prepared by the invention improves the antistatic performance and flame-retardant performance of the fabric, and is expected to be applied in the fields of leather, food, papermaking and the like.

Description

technical field

[0001] The invention belongs to the technical field of composite materials, and in particular relates to an antistatic and flame-resistant casein-based graphene composite fabric and a preparation method thereof. Background technique

[0002] In recent years, environmental protection issues have been paid close attention to by people. As a pure natural protein, casein can synthesize various derivatives due to its good biodegradability, affinity, low cost, and various reactive groups in the molecular chain. It is widely used in leather, paper, fabric and medicine. and other fields have been widely used. However, there are still some defects in the application of casein as a coating, such as poor antistatic performance and flame retardancy, which limit its application range to a certain extent. Graphene is a carbon material with a two-dimensional honeycomb structure. It has a unique single-atom layered structure and excellent mechanical and thermal properties,...

Examples

preparation example Construction

[0025] The preparation method of antistatic flame-resistant type casein-based graphene composite fabric comprises the following steps:

[0026] Step 1: Prepare graphene oxide (GO) by improving the Hummers method:

[0027] Take 7.5~7.8mL of concentrated sulfuric acid and add it into a three-necked flask, slowly add potassium persulfate and phosphorus pentoxide in a mass ratio of (1:1~1:3) into the concentrated sulfuric acid under vigorous stirring, and heat up the mixture to 70°C~90°C; then, add graphite into the mixed solution, stop heating after stirring for 8~12 hours, cool to room temperature, wash the obtained product after the reaction, let stand, and dry in the air;

[0028]Take 20~30ml of concentrated sulfuric acid and add it to a three-necked flask, then mix the pretreated graphite and sodium nitrate (the mass ratio of graphite and sodium nitrate is 1:1~1:3), and then slowly add it to the concentrated sulfuric acid. Keep it at 3°C~4°C; then, slowly add potassium perma...

Embodiment 1

[0041] Step 1: Prepare graphene oxide (GO) by improving the Hummers method

[0042] Take 7.5mL of concentrated sulfuric acid and add it to a 100mL three-necked flask, and slowly add potassium persulfate and phosphorus pentoxide to the concentrated sulfuric acid with a mass ratio of 1:1 under vigorous stirring. Heat the mixture to 70°C; then add graphite, wash the graphite on the bottle wall with 3~6ml concentrated sulfuric acid, stop heating after stirring for 8 hours, transfer to a 500mL beaker after cooling to room temperature, add 500mL distilled water to the beaker , stand still for 24 hours to wait for precipitation, discard the supernatant and suspension, then add 500mL distilled water, stir and stand still, repeat 4-5 times, filter with suction, wash with distilled water until neutral, place at room temperature for 1 hour, and dry in the air.

[0043] Take 18ml of concentrated sulfuric acid and add it to a three-necked flask, mix the pretreated graphite and sodium nitra...

Embodiment 2

[0050] Step 1: Prepare graphene oxide (GO) by improving the Hummers method

[0051] Take 7.6mL of concentrated sulfuric acid and add it to a three-necked flask, and slowly add potassium persulfate and phosphorus pentoxide into the concentrated sulfuric acid under strong stirring at a mass ratio of 1:2. Adding phosphorus pentoxide will cause exothermic phenomenon. Heat the mixture to 80°C, then add the graphite into the three-necked flask, wash the graphite stuck on the wall of the bottle with 3~6ml of concentrated sulfuric acid; after stirring for 10 hours, stop heating, cool to room temperature, transfer to a 500mL beaker, add 500mL of distilled water Stand still for 24 hours to wait for precipitation, pour out the supernatant and suspension; add 500mL of distilled water, stir and let stand, wash repeatedly 4-5 times, filter with suction, wash with distilled water until neutral, place at room temperature for 2 hours, and dry in the air.

[0052] Take 25ml of concentrated sulf...

technical field

[0001] The invention belongs to the technical field of composite materials, and in particular relates to an antistatic and flame-resistant casein-based graphene composite fabric and a preparation method thereof. Background technique

[0002] In recent years, environmental protection issues have been paid close attention to by people. As a pure natural protein, casein can synthesize various derivatives due to its good biodegradability, affinity, low cost, and various reactive groups in the molecular chain. It is widely used in leather, paper, fabric and medicine. and other fields have been widely used. However, there are still some defects in the application of casein as a coating, such as poor antistatic performance and flame retardancy, which limit its application range to a certain extent. Graphene is a carbon material with a two-dimensional honeycomb structure. It has a unique single-atom layered structure and excellent mechanical and thermal properties,...

Examples

preparation example Construction

[0025] The preparation method of antistatic flame-resistant type casein-based graphene composite fabric comprises the following steps:

[0026] Step 1: Prepare graphene oxide (GO) by improving the Hummers method:

[0027] Take 7.5~7.8mL of concentrated sulfuric acid and add it into a three-necked flask, slowly add potassium persulfate and phosphorus pentoxide in a mass ratio of (1:1~1:3) into the concentrated sulfuric acid under vigorous stirring, and heat up the mixture to 70°C~90°C; then, add graphite into the mixed solution, stop heating after stirring for 8~12 hours, cool to room temperature, wash the obtained product after the reaction, let stand, and dry in the air;

[0028]Take 20~30ml of concentrated sulfuric acid and add it to a three-necked flask, then mix the pretreated graphite and sodium nitrate (the mass ratio of graphite and sodium nitrate is 1:1~1:3), and then slowly add it to the concentrated sulfuric acid. Keep it at 3°C~4°C; then, slowly add potassium perma...

Embodiment 1

[0041] Step 1: Prepare graphene oxide (GO) by improving the Hummers method

[0042] Take 7.5mL of concentrated sulfuric acid and add it to a 100mL three-necked flask, and slowly add potassium persulfate and phosphorus pentoxide to the concentrated sulfuric acid with a mass ratio of 1:1 under vigorous stirring. Heat the mixture to 70°C; then add graphite, wash the graphite on the bottle wall with 3~6ml concentrated sulfuric acid, stop heating after stirring for 8 hours, transfer to a 500mL beaker after cooling to room temperature, add 500mL distilled water to the beaker , stand still for 24 hours to wait for precipitation, discard the supernatant and suspension, then add 500mL distilled water, stir and stand still, repeat 4-5 times, filter with suction, wash with distilled water until neutral, place at room temperature for 1 hour, and dry in the air.

[0043] Take 18ml of concentrated sulfuric acid and add it to a three-necked flask, mix the pretreated graphite and sodium nitra...

Embodiment 2

[0050] Step 1: Prepare graphene oxide (GO) by improving the Hummers method

[0051] Take 7.6mL of concentrated sulfuric acid and add it to a three-necked flask, and slowly add potassium persulfate and phosphorus pentoxide into the concentrated sulfuric acid under strong stirring at a mass ratio of 1:2. Adding phosphorus pentoxide will cause exothermic phenomenon. Heat the mixture to 80°C, then add the graphite into the three-necked flask, wash the graphite stuck on the wall of the bottle with 3~6ml of concentrated sulfuric acid; after stirring for 10 hours, stop heating, cool to room temperature, transfer to a 500mL beaker, add 500mL of distilled water Stand still for 24 hours to wait for precipitation, pour out the supernatant and suspension; add 500mL of distilled water, stir and let stand, wash repeatedly 4-5 times, filter with suction, wash with distilled water until neutral, place at room temperature for 2 hours, and dry in the air.

[0052] Take 25ml of concentrated sulf...

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