Phytic acid doped carbon nitride-polyaniline nano composite material and preparation method thereof as well as intumescent fire retardant coating and preparation method thereof

A nanocomposite material and fireproof coating technology, applied in the field of intumescent fireproof coating and its preparation, phytic acid doped carbon nitride-polyaniline nanocomposite material and its preparation field, to improve flame retardancy, improve flame retardancy efficiency, The synthesis process is simple and easy to control

Pending Publication Date: 2022-04-29
QINGDAO UNIV OF SCI & TECH
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  • Abstract
  • Description
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However, there are few researches and applica

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  • Phytic acid doped carbon nitride-polyaniline nano composite material and preparation method thereof as well as intumescent fire retardant coating and preparation method thereof
  • Phytic acid doped carbon nitride-polyaniline nano composite material and preparation method thereof as well as intumescent fire retardant coating and preparation method thereof
  • Phytic acid doped carbon nitride-polyaniline nano composite material and preparation method thereof as well as intumescent fire retardant coating and preparation method thereof

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[0040] The invention provides a preparation method of a phytic acid-doped carbon nitride-polyaniline nanocomposite material, comprising the following steps:

[0041] (1) flaky carbon nitride is mixed with phytic acid solution to obtain carbon nitride dispersion;

[0042] (2) adding aniline to the carbon nitride dispersion to obtain solution A;

[0043] (3) ammonium persulfate and phytic acid solution are mixed to obtain solution B;

[0044] (4) The solution B and the solution A are mixed and reacted to obtain a phytic acid-doped carbon nitride-polyaniline nanocomposite material.

[0045] In the present invention, the particle size distribution of the flaky carbon nitride is preferably 0.2-5 μm, more preferably 0.2-2 μm; the concentrations of phytic acid in the steps (1) and (3) are independently 0.4-0.6 mol / L.

[0046] In the present invention, in steps (1) and (3), the concentration of the phytic acid solution used is independently preferably 0.4-0.6 mol / L, and further in...

Example Embodiment

[0064] Example 1

[0065] Put 30g of melamine in the crucible, put the lid into the muffle furnace, heat up at a heating rate of 10°C / min, heat up to 550°C, keep it for 3 hours, cool down to room temperature and take it out to obtain a pale yellow graphite phase. Bulk carbon nitride. Then put it into a crucible without a lid, put it in a muffle furnace, heat up at a heating rate of 10 °C / min, heat it up to 550 °C, keep it for 3 hours, cool it down to room temperature naturally, and take it out to obtain a dark yellow nitrogen after thermal stripping. Carbonized solid. Then, the obtained yellow solid was put into a ball mill for ball milling to obtain carbon nitride nanosheets with a particle size of 0.2-2 μm.

[0066] The obtained carbon nitride was characterized and the results were as follows Figures 1 to 2 shown, by figure 1 It can be seen that the morphology of the obtained bulk carbon nitride is a stacked block with a diameter of more than 2 μm and a thickness of mor...

Example Embodiment

[0071] Example 2

[0072] Put 30g of melamine into the crucible, cover it and put it in a muffle furnace, heat up at a heating rate of 16°C / min, heat up to 530°C, keep it under heat for 3 hours, naturally cool down to room temperature and take it out to obtain a pale yellow graphite phase. Bulk carbon nitride. Then put it into an uncovered crucible, put it in a muffle furnace, heat up at a heating rate of 16°C / min, heat it up to 530°C, keep it for 3 hours, cool it down to room temperature naturally, and take it out to obtain a dark yellow nitrogen after thermal stripping. Carbonized solid. Then, the obtained yellow solid was put into a ball mill for ball milling to obtain carbon nitride nanosheets with a particle size of 0.2-3 μm.

[0073] Take 0.2 g of the obtained carbon nitride nanosheets in 50 ml of 0.4 mol / L phytic acid solution, stir evenly, ultrasonically disperse for 20 min, and then add 3 g of aniline to obtain solution A.

[0074] Take 3 g of ammonium persulfate i...

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Abstract

The invention relates to the technical field of fireproof coatings, in particular to a phytic acid doped carbon nitride-polyaniline nano composite material and a preparation method thereof as well as an intumescent fireproof coating and a preparation method thereof. The phytic acid doped carbon nitride-polyaniline nano composite material can be used for enhancing the flame retardant property of epoxy resin, and meanwhile, the problem that a two-dimensional lamellar material is very easy to agglomerate and is difficult to well disperse in the epoxy resin is solved. The phytic acid in the material is a biomass material, is a green and sustainable resource and conforms to the green chemistry concept, and the material synthesis process is simple and easy to control. The carbon nitride polyaniline intumescent fire retardant coating prepared from the phytic acid doped carbon nitride-polyaniline nano material has excellent flame retardant property and is environment-friendly.

Description

technical field [0001] The invention relates to the technical field of fireproof coatings, in particular to a phytic acid-doped carbon nitride-polyaniline nanocomposite material and a preparation method thereof, and an intumescent fireproof coating and a preparation method thereof. Background technique [0002] Due to its excellent mechanical properties, good thermal stability and dielectric properties, and good adhesion on the surface of other substances, epoxy resin-based coatings are widely used in construction, shipbuilding, and petrochemical industries. However, because epoxy resin is flammable and produces huge smoke when burned, it has a huge fire hazard, so it needs to be flame-retardantly treated to improve its fire safety performance to meet the fire safety requirements of the applied environment . [0003] Carbon nitride has a graphene-like two-dimensional layered structure, has good chemical stability, thermal stability and mechanical properties, and is widely u...

Claims

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Application Information

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IPC IPC(8): C08G73/02C08K7/00C08K3/28C08K5/521C09D163/00C09D5/18
CPCC08G73/0266C08K7/00C08K3/28C08K5/521C09D163/00C09D5/185C08K2201/011C08K2003/323C08L79/02C08K3/32
Inventor 焦传梅董慧鑫陈希磊李少香
Owner QINGDAO UNIV OF SCI & TECH
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