Cellulose nanocrystal/MXene self-assembled flame-retardant antistatic coating and application in glass fiber reinforced plastic

Abstract

The invention discloses a cellulose nanocrystal/MXene self-assembled flame-retardant antistatic coating and application in glass fiber reinforced plastic, and belongs to the field of halogen-free flame retardance. According to the cellulose nanocrystal/MXene self-assembled flame-retardant antistatic coating and the application, the flame-retardant antistatic coating is obtained through self-assembly by utilizing a phosphoric acid doped nitrogen-containing polymer coated with cellulose nanocrystal and polyphenol-assisted stripped MXene, the preparation method is simple and controllable, the coating construction speed is high, the components of the coating are green and environment-friendly, the obtained flame-retardant coating has phosphorus and nitrogen synergistic flame-retardant and nanometer flame-retardant effects, meanwhile, a base material is endowed with electrical conductivity, the problems that glass fiber reinforced plastic is inflammable and prone to generating static electricity are solved, and the flame-retardant coating has good application prospects in the fields of rail transit, ships, aerospace and the like.

Description

technical field

[0001] The invention relates to a cellulose nanocrystal / MXene self-assembled flame-retardant antistatic coating and its application on glass fiber reinforced plastics, belonging to the field of halogen-free flame-retardant. Background technique

[0002] FRP has a series of advantages such as high specific strength, high specific modulus, chemical corrosion resistance, and fatigue resistance. It has been widely used in transportation, medical treatment, construction, sporting goods, aerospace, and national defense. However, the resin matrix is ​​a flammable material, which leads to poor flame retardancy of FRP. It is easy to burn when exposed to an open flame. During the combustion process, a large amount of heat, smoke and toxic gases are released, causing economic losses and threatening the safety of human life. . It is an effective method to reduce the fire risk of FRP to develop a coating with simple process and high flame retardant efficiency to improve ...

Examples

Embodiment 1

[0035] Preparation of flame retardant dispersion:

[0036] Add 2g lithium fluoride to 40ml 9M hydrochloric acid, react at room temperature for 30min, raise the temperature to 35°C, add 2gTi 3 AlC 2 , reacted for 24h, centrifuged, collected the solid, washed with water and dried to obtain Ti 3 C 2 T x colloid.

[0037] Dissolve 0.1 g of tannic acid in 300 ml of deionized water, and add 0.2 g of Ti to the solution 3 C 2 T x The colloid was ultrasonically dispersed for 2 hours, centrifuged to collect the solid, washed with water, dried, and re-dispersed to obtain 2 mg / mL Ti 3 C 2 T x nanosheet dispersion;

[0038] Dissolve 1 g of aniline monomer in 200 ml of deionized water, then add 0.5 g of phytic acid and 0.3 g of cellulose nanocrystals to the aniline solution, and after ultrasonication in a water bath for 1 h, add 0.15 g of ammonium persulfate to the mixture and react at 0 °C 3h, washed with water, dried and re-dispersed to obtain a flame-retardant cellulose nanocr...

Embodiment 2

[0045] Preparation of flame retardant dispersion:

[0046] Add 2g lithium fluoride to 40ml 9M hydrochloric acid, react at room temperature for 30min, raise the temperature to 35°C, add 2gTi 3 AlC 2 , reacted for 24h, centrifuged, collected the solid, washed with water and dried to obtain Ti 3 C 2 T x colloid.

[0047] Dissolve 0.1 g of tannic acid in 300 ml of deionized water, and add 0.2 g of Ti to the solution 3 C 2 T x The colloid was ultrasonically dispersed for 2 hours, centrifuged to collect the solid, washed with water, dried, and re-dispersed to obtain 2 mg / ml Ti 3 C 2 T x nanosheet dispersion;

[0048] Dissolve 1 g of aniline monomer in 200 ml of deionized water, then add 0.8 g of phytic acid and 0.3 g of cellulose nanocrystals to the aniline solution, and after ultrasonication in a water bath for 1 h, add 0.15 g of ammonium persulfate to the mixture, and Reacted for 3 hours, washed with water, dried and re-dispersed to obtain a flame-retardant cellulose na...

Embodiment 3

[0051] Preparation of flame retardant dispersion:

[0052] Add 2g lithium fluoride to 40ml 9M hydrochloric acid, react at room temperature for 30min, raise the temperature to 35°C, add 2gTi 3 AlC 2 , reacted for 24h, centrifuged, collected the solid, washed with water and dried to obtain Ti 3 C 2 T x colloid.

[0053] Dissolve 0.1 g of tannic acid in 300 ml of deionized water, and add 0.2 g of Ti to the solution 3 C 2 T x The colloid was ultrasonically dispersed for 2 hours, centrifuged to collect the solid, washed with water, dried, and re-dispersed to obtain 3 mg / mL Ti 3 C 2 T x nanosheet dispersion;

[0054] Dissolve 1 g of aniline monomer in 200 ml of deionized water, then add 0.5 g of phytic acid and 0.3 g of cellulose nanocrystals to the aniline solution, and after ultrasonication in a water bath for 1 h, add 0.15 g of ammonium persulfate to the mixture, and Reacted for 3 hours, washed with water, dried and re-dispersed to obtain a flame-retardant cellulose na...

technical field

[0001] The invention relates to a cellulose nanocrystal / MXene self-assembled flame-retardant antistatic coating and its application on glass fiber reinforced plastics, belonging to the field of halogen-free flame-retardant. Background technique

[0002] FRP has a series of advantages such as high specific strength, high specific modulus, chemical corrosion resistance, and fatigue resistance. It has been widely used in transportation, medical treatment, construction, sporting goods, aerospace, and national defense. However, the resin matrix is ​​a flammable material, which leads to poor flame retardancy of FRP. It is easy to burn when exposed to an open flame. During the combustion process, a large amount of heat, smoke and toxic gases are released, causing economic losses and threatening the safety of human life. . It is an effective method to reduce the fire risk of FRP to develop a coating with simple process and high flame retardant efficiency to improve ...

Examples

Embodiment 1

[0035] Preparation of flame retardant dispersion:

[0036] Add 2g lithium fluoride to 40ml 9M hydrochloric acid, react at room temperature for 30min, raise the temperature to 35°C, add 2gTi 3 AlC 2 , reacted for 24h, centrifuged, collected the solid, washed with water and dried to obtain Ti 3 C 2 T x colloid.

[0037] Dissolve 0.1 g of tannic acid in 300 ml of deionized water, and add 0.2 g of Ti to the solution 3 C 2 T x The colloid was ultrasonically dispersed for 2 hours, centrifuged to collect the solid, washed with water, dried, and re-dispersed to obtain 2 mg / mL Ti 3 C 2 T x nanosheet dispersion;

[0038] Dissolve 1 g of aniline monomer in 200 ml of deionized water, then add 0.5 g of phytic acid and 0.3 g of cellulose nanocrystals to the aniline solution, and after ultrasonication in a water bath for 1 h, add 0.15 g of ammonium persulfate to the mixture and react at 0 °C 3h, washed with water, dried and re-dispersed to obtain a flame-retardant cellulose nanocr...

Embodiment 2

[0045] Preparation of flame retardant dispersion:

[0046] Add 2g lithium fluoride to 40ml 9M hydrochloric acid, react at room temperature for 30min, raise the temperature to 35°C, add 2gTi 3 AlC 2 , reacted for 24h, centrifuged, collected the solid, washed with water and dried to obtain Ti 3 C 2 T x colloid.

[0047] Dissolve 0.1 g of tannic acid in 300 ml of deionized water, and add 0.2 g of Ti to the solution 3 C 2 T x The colloid was ultrasonically dispersed for 2 hours, centrifuged to collect the solid, washed with water, dried, and re-dispersed to obtain 2 mg / ml Ti 3 C 2 T x nanosheet dispersion;

[0048] Dissolve 1 g of aniline monomer in 200 ml of deionized water, then add 0.8 g of phytic acid and 0.3 g of cellulose nanocrystals to the aniline solution, and after ultrasonication in a water bath for 1 h, add 0.15 g of ammonium persulfate to the mixture, and Reacted for 3 hours, washed with water, dried and re-dispersed to obtain a flame-retardant cellulose na...

Embodiment 3

[0051] Preparation of flame retardant dispersion:

[0052] Add 2g lithium fluoride to 40ml 9M hydrochloric acid, react at room temperature for 30min, raise the temperature to 35°C, add 2gTi 3 AlC 2 , reacted for 24h, centrifuged, collected the solid, washed with water and dried to obtain Ti 3 C 2 T x colloid.

[0053] Dissolve 0.1 g of tannic acid in 300 ml of deionized water, and add 0.2 g of Ti to the solution 3 C 2 T x The colloid was ultrasonically dispersed for 2 hours, centrifuged to collect the solid, washed with water, dried, and re-dispersed to obtain 3 mg / mL Ti 3 C 2 T x nanosheet dispersion;

[0054] Dissolve 1 g of aniline monomer in 200 ml of deionized water, then add 0.5 g of phytic acid and 0.3 g of cellulose nanocrystals to the aniline solution, and after ultrasonication in a water bath for 1 h, add 0.15 g of ammonium persulfate to the mixture, and Reacted for 3 hours, washed with water, dried and re-dispersed to obtain a flame-retardant cellulose na...

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