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Flame-retardant and ablation-resistant filler, and preparation method and application thereof

An ablation-resistant and reaction-resistant technology, applied in the field of flame-retardant materials, can solve problems such as limited application range, difficulty in expanding production, and inability to control and adjust product shape, and achieve the effects of simple production process, slow burning, and good sphericity

Pending Publication Date: 2020-02-25
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The synthesis method disclosed in the above patent requires the participation of catalysts and the adjustment of pH value, it is difficult to expand production, and it is impossible to effectively control and adjust the shape of the product, resulting in a relatively limited application range

Method used

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  • Flame-retardant and ablation-resistant filler, and preparation method and application thereof
  • Flame-retardant and ablation-resistant filler, and preparation method and application thereof
  • Flame-retardant and ablation-resistant filler, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Add 12.81g of resorcinol and 18.96g of formaldehyde solution (concentration: 37ωt%) into 50mL of deionized water, and stir at a constant speed of 200rpm at room temperature until the solution is clear to obtain solution A.

[0036] Add 14.70g of melamine and 28.38g of formaldehyde solution (concentration: 37ωt%) into 100mL of deionized water, and stir at a constant speed of 200rpm at 85°C until the solution is clear to obtain solution B.

[0037] After solution B dropped to normal temperature, pour solution A into solution B, continue stirring for 5 min, and dilute the solution to 300 mL with deionized water to obtain solution C.

[0038] Heat solution C to 85°C, keep it for 2 hours, then cool to room temperature, pour out the supernatant, wash with deionized water for 3 times, filter and dry in an electric blast drying oven at 85°C for 24 hours to obtain a flame retardant Ablative filler.

[0039] Such as Figure 1-2 As shown, the flame-retardant and ablation-resista...

Embodiment 2

[0043] Add 17.82g of resorcinol and 26.28g of formaldehyde solution (concentration: 37ωt%) into 50mL of deionized water, and stir at a constant speed of 200rpm at room temperature until the solution is clear to obtain solution A.

[0044] Add 10.20 g of melamine and 19.62 g of formaldehyde solution (concentration: 37ωt%) into 100 mL of deionized water, and stir at a constant speed of 200 rpm at 85° C. until the solution becomes clear to obtain solution B.

[0045] After solution B dropped to normal temperature, pour solution A into solution B, continue stirring for 5 min, and dilute the solution to 300 mL with deionized water to obtain solution C.

[0046] Heat solution C to 85°C, keep it for 2 hours, then cool to room temperature, pour out the supernatant, wash with deionized water for 3 times, filter and dry in an electric blast drying oven at 85°C for 24 hours to obtain a flame retardant Ablative filler.

[0047] The flame-retardant and ablation-resistant filler obtained i...

Embodiment 3

[0049] Add 8.22g of resorcinol and 12.18g of formaldehyde solution (concentration: 37ωt%) into 50mL of deionized water, and stir at a constant speed of 200rpm at room temperature until the solution is clear to obtain solution A.

[0050] Add 18.84g of melamine and 36.30g of formaldehyde solution (concentration: 37ωt%) into 100mL of deionized water, and stir at a constant speed of 200rpm at 85°C until the solution is clear to obtain solution B.

[0051] After solution B dropped to normal temperature, pour solution A into solution B, continue stirring for 5 min, and dilute the solution to 300 mL with deionized water to obtain solution C.

[0052] Heat solution C to 85°C, keep it for 2 hours, then cool to room temperature, pour out the supernatant, wash with deionized water for 3 times, filter and dry in an electric blast drying oven at 85°C for 24 hours to obtain a flame retardant Ablative filler.

[0053] The flame-retardant and ablation-resistant filler obtained in this examp...

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Abstract

The invention relates to a flame-retardant and ablation-resistant filler, and a preparation method and an application thereof. Raw materials of the filler comprise a phenolic compound, an aldehyde compound and an amine compound, and a molar ratio of the phenolic compound to the aldehyde compound to amino groups on the amine compound is X:Y:Z, wherein Y is (1~3)*X + (0.5~2)*Z, the average particlesize of the filler is 120-5000 nm, and the nitrogen content is 5-35 wt%. The preparation method of the filler comprises the following steps: (1) mixing the phenolic compound and the aldehyde compoundin a solvent to obtain a solution A; (2) mixing the amine compound and the aldehyde compound in the solvent to obtain a solution B; (3) mixing the solution A with the solution B to obtain a solution C; and (4) heating, washing and drying the solution C, and grinding the dried solution C. Compared with fillers in the prior art, the filler of the invention has the advantages of simple preparation method, favorable sphericity, uniform granularity, excellent flame retardancy and the like, and can be used as a filler for flame-retardant ablative heatproof composite materials and coatings.

Description

technical field [0001] The invention relates to the technical field of flame-retardant materials, in particular to a flame-retardant and ablation-resistant filler and its preparation method and application. Background technique [0002] Phenolic resin is the first to be discovered among synthetic resins, and it is also the first resin variety to realize industrial production. Because of its cheap raw materials, easy synthesis, excellent ablation resistance, and high carbon formation rate after high-temperature pyrolysis, it is widely used. Aerospace, especially in ablation-resistant materials. In recent years, different types and forms of modified phenolic resins have been continuously developed, and the scope of application has been greatly expanded. [0003] Patent CN 108840981A discloses a method for synthesizing flame-retardant phenolic resin, using p-acetaminophenol and formaldehyde as raw materials to synthesize nitrogen-containing phenolic resin under the action of a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G14/10C08G14/06
CPCC08G14/10C08G14/06
Inventor 龙东辉董炜张亚运罗艺曹宇
Owner EAST CHINA UNIV OF SCI & TECH
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