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Wafer-like aluminum phosphate/thermosetting resin composite and preparation method thereof

A technology of resin composite materials and disc aluminum phosphate, which is applied in the fields of phosphorus compounds, chemical instruments and methods, inorganic chemistry, etc., can solve the problems that the research and development results of flame retardant have not been reported, aluminum phosphate is not a flame retardant, etc., and achieve excellent results Thermal stability, good flame retardant effect, high yield effect

Active Publication Date: 2014-05-21
扬州华上新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

People try to add aluminum phosphate to the polymer to obtain composite materials, but the research and development results of flame retardancy have not been reported
The main reason is because commercial aluminum phosphate is not an effective flame retardant

Method used

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  • Wafer-like aluminum phosphate/thermosetting resin composite and preparation method thereof
  • Wafer-like aluminum phosphate/thermosetting resin composite and preparation method thereof
  • Wafer-like aluminum phosphate/thermosetting resin composite and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] 1. Preparation of disc-shaped aluminum phosphate

[0038] Under the condition of stirring at 80° C., 1 mol of aluminum hydroxide was reacted with 3.5 mol of phosphoric acid for 20 minutes to prepare an aluminum dihydrogen phosphate precursor. In the prepared aluminum dihydrogen phosphate precursor, add 5.5 moles of deionized water to obtain the aluminum dihydrogen phosphate precursor solution; the precursor aluminum dihydrogen phosphate solution is cooled to 0 ° C, and the aluminum dihydrogen phosphate precursor solution is Ammonia solution with a concentration of 8 mol / liter was added dropwise to the solution until the pH value of the solution was 4; it was continued at 0°C for 9 hours; after the reaction was completed, washing and suction filtration were performed to remove impurities to obtain disc-shaped aluminum phosphate. 90.0%. Synthetic reaction formula, scanning electron microscope, infrared spectrum, X-ray diffraction spectrum of this disc-shaped aluminum pho...

Embodiment 2

[0063] 1. Preparation of disc-shaped aluminum phosphate

[0064] Under stirring conditions at 40°C, 0.5 mol of alumina was reacted with 4.0 mol of phosphoric acid for 20 min to obtain an aluminum dihydrogen phosphate precursor; 17 mol of deionized water was added to the prepared aluminum dihydrogen phosphate precursor, Obtain the aluminum dihydrogen phosphate precursor solution; cool the aluminum dihydrogen phosphate precursor solution to 20°C; drop 8.0 mol / liter of ammonia solution into the solution to adjust the pH of the solution to 6, and keep it warm at 20°C for 10 hours; after the reaction , washed, and suction filtered to remove impurities to obtain disc-shaped aluminum phosphate with a diameter of 1.1 μm and a yield of 85.0%.

[0065] 2. Preparation of Flame Retardant Disc Aluminum Phosphate / Bismaleimide Resin Composite

[0066] Weigh 56.8g of N,N'-4,4'-diphenylmethane bismaleimide and 43.2g of O,O'-diallyl bisphenol A in a beaker, and mechanically stir at 135°C for p...

Embodiment 3

[0069] 1. Preparation of disc-shaped aluminum phosphate

[0070]Under stirring conditions at 50°C, 1 mol of aluminum nitrate was reacted with 3.8 mol of sodium dihydrogen phosphate for 10 minutes to obtain a precursor of aluminum dihydrogen phosphate; Ionized water to obtain the aluminum dihydrogen phosphate precursor solution; cool the aluminum dihydrogen phosphate precursor solution to 10°C; add 6 mol / L ammonia solution drop by drop to the solution until the pH of the solution is 6, and keep the temperature at 15°C for 8h ; After the reaction, wash and filter with suction to remove impurities to obtain disc-shaped aluminum phosphate with a diameter of 1.3 μm and a yield of 92.0%.

[0071] 2. Preparation of Flame Retardant Disc Aluminum Phosphate / Cyanate Resin Composite

[0072] Weigh 60g of bisphenol A type cyanate in a beaker and stir mechanically at 150°C until the cyanate is completely dissolved to obtain a clear liquid; add 15g of the disc-shaped aluminum phosphate prep...

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Abstract

The invention relates to a wafer-like aluminum phosphate / thermosetting resin composite and a preparation method thereof. A preparation process of wafer-like aluminum phosphate comprises the steps of enabling an aluminum-contained compound and a phosphorus-contained compound to react at the temperature of 40-100 DEG C for 10-30min according to the aluminum-to-phosphorus molar ratio of 1:3 to 1:5 to prepare an aluminum dihydrogen phosphate precursor, and then, adding 5.5-17 mol of deionized water to obtain an aluminum dihydrogen phosphate precursor solution; cooling to 0-20 DEG C, regulating the pH value to 4-6 by using an alkaline solution, preserving the heat at the temperature of 0-20 DEG C for 8-12h, and after the reaction is ended, washing, carrying out suction filtration and removing impurities to obtain wafer-like aluminum phosphate with the diameter of 1-1.5mu m; uniformly mixing 100 parts by weight of molten thermosetting resin and 3-50 parts by weight of wafer-like aluminum phosphate, and curing to obtain the wafer-like aluminum phosphate / thermosetting resin composite with flame retardance. The wafer-like aluminum phosphate contains a great number of hydroxyls, has favorable dispersibility in a resin matrix, and also has favorable interfacial force so as to ensure that the composite has a flame retardant effect. The preparation method provided by the invention has the characteristics of wide applicability and simple operation process.

Description

technical field [0001] The invention relates to a composite material and a preparation method thereof, in particular to an aluminum phosphate / thermosetting resin composite material and a preparation method thereof. [0002] Background technique [0003] The rapid development of electronics, energy and other industries puts forward more and higher performance requirements for high-performance resins, among which flame retardancy has become a new necessary performance after heat resistance, dielectric properties and mechanical properties. However, almost all polymers do not have good flame retardancy by themselves, and the addition of flame retardants has been proved to be a simple and feasible method to improve the flame retardancy of polymers. [0004] In recent years, with the increasing awareness of environmental protection, inorganic flame retardants with high smoke suppression and low toxicity have received widespread attention. At present, such inorganic flame retarda...

Claims

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Application Information

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IPC IPC(8): C08L101/00C08K7/00C08K3/32C01B25/36
Inventor 梁国正游秋琴顾嫒娟袁莉
Owner 扬州华上新材料有限公司
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