Carbon microsphere, hydrotalcite and polyphosphazene hybrid flame retardant and preparation method thereof

A technology of carbon microspheres and hydrotalcite, which is applied in the flame retardant field of polyolefin matrix materials, can solve the problems of poor mechanical properties and low flame retardant efficiency, reduce the deterioration of mechanical properties, improve flame retardant properties, and improve carbon formation Insufficient effect

Active Publication Date: 2022-04-26
XIANGTAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Currently known flame retardants with smoke suppression effects are mostly magnesium hydroxide, aluminum hydroxide, hydrotalcite, etc. However, when these flame retardants are added to polyolefins, the mixture of carbon microspheres and smoke suppression flame The self-agglomeration is serious, and

Method used

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  • Carbon microsphere, hydrotalcite and polyphosphazene hybrid flame retardant and preparation method thereof
  • Carbon microsphere, hydrotalcite and polyphosphazene hybrid flame retardant and preparation method thereof
  • Carbon microsphere, hydrotalcite and polyphosphazene hybrid flame retardant and preparation method thereof

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Embodiment 1

[0031] (1) Configure 400m L concentration as 0.4mol L -1 The aqueous glucose solution was transferred to a hydrothermal reaction kettle with a capacity of 500mL for hydrothermal reaction. The reaction temperature was 160°C and the reaction time was 8h. After the reaction was completed, it was cooled and filtered, and the filtered black solid was washed several times with absolute ethanol. , until the filtrate is clear and transparent, then wash with deionized water until the pH of the filtrate is neutral, put the filter cake in a vacuum oven, dry at 100°C for 6 hours, and then grind it evenly and seal it for storage. The prepared sample carbon The microspheres are recorded as CMSs, and the SEM results are shown in figure 1 (A), The surface of CMSs is smooth, the outline is clear, and the particle size distribution is relatively uniform, but the dispersion of CMSs itself is poor.

[0032] (2) Weigh 2g of CMSs and dissolve it in 100mL of absolute ethanol, and transfer it to a 1...

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Abstract

The invention discloses a carbon microsphere-hydrotalcite-polyphosphazene hybrid flame retardant and a preparation method thereof.The preparation method comprises the steps that the surface of a carbon microsphere is coated with hydrotalcite through electrostatic acting force, then the surface of the carbon microsphere-hydrotalcite is coated with a polyphosphazene organic film formed after in-situ polymerization reaction of phosphazene and 4, 4 '-diaminodiphenyl ether, and the flame retardant is prepared. The carbon microsphere, hydrotalcite and polyphosphazene hybrid flame retardant is obtained. According to the carbon microsphere, hydrotalcite and polyphosphazene hybrid flame retardant disclosed by the invention, the multi-interface problem between various particles and a polyolefin matrix is converted into a single interface problem, so that the deterioration of the flame retardant on the mechanical property of the polyolefin matrix is reduced to the maximum extent, and through the cooperation of the carbon microspheres, the hydrotalcite and the polyphosphazene, the mechanical property of the polyolefin matrix is improved. The flame retardant property of the polyolefin matrix material is obviously improved, meanwhile, the damage of the flame retardant to the mechanical property of the matrix material can be reduced, and the flame-retardant polyolefin composite material with excellent comprehensive performance is obtained.

Description

technical field [0001] The invention relates to a carbon microsphere@hydrotalcite@polyphosphazene hybrid flame retardant with carbon microspheres as the core and hydrotalcite and polyphosphazene as the double shell and its preparation method, which belongs to the flame retardant technology of polyolefin matrix materials field. Background technique [0002] Polypropylene (PP) is a semi-crystalline thermoplastic that has been widely used in industries such as automobiles, home appliances, and construction due to its advantages such as good processability, excellent chemical resistance, and relatively low price. However, PP is a flammable material, and its limiting oxygen index is generally 17.4% to 18.5% (<21%). It burns fast in case of fire, has a high calorific value, and produces a large number of combustible molten droplets, which in turn cause many fire accidents. The country's economic construction and people's lives and properties have caused huge losses, which has ...

Claims

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Application Information

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IPC IPC(8): C08K3/04C08K9/10C08L23/12
CPCC08K7/18C08K9/10C08L2201/02C08L23/12
Inventor 徐圣王晗胡杰马嘉欣刘志豪胡燕李章智王琪瞿念朱瑾莹
Owner XIANGTAN UNIV
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