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Phosphate-radical-intercalated layered-like hydroxide containing zinc, aluminum and tin, preparation method thereof and application thereof in flame retardant material

A technology of layered hydroxide and flame retardant materials, which is applied in the direction of epoxy resin coatings, coatings, fireproof coatings, etc., and can solve the problems of single-layer intercalation, reduction of mechanical properties, easy migration of additives, loss of long-term flame retardancy And other issues

Inactive Publication Date: 2019-09-10
PUTIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the main method on the market is to synthesize P or Si-containing flame-retardant active monomers (or oligomers) and copolymerize them with acrylates to prepare UV-curable transparent flame-retardant coatings. Although this method improves the flame-retardant properties of the coating to a certain extent , overcome the shortcomings of the additive flame retardant method, such as poor compatibility with the polymer base material, negative impact on the physical and mechanical properties of the material, easy migration loss of additives, and poor long-term flame retardant performance.
However, when the phosphorus content is large, the material will be plasticized internally and the mechanical properties will be reduced.
On the other hand, from the research reports of synthetic hydrotalcite flame retardants, most of the research is limited to a single interlayer intercalation, so that the flame retardant hydrotalcite obtained alone as a flame retardant is not enough for flame retardancy and smoke suppression. , only by mixing flame retardant hydrotalcite with other flame retardants can the actual use requirements be met

Method used

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  • Phosphate-radical-intercalated layered-like hydroxide containing zinc, aluminum and tin, preparation method thereof and application thereof in flame retardant material
  • Phosphate-radical-intercalated layered-like hydroxide containing zinc, aluminum and tin, preparation method thereof and application thereof in flame retardant material
  • Phosphate-radical-intercalated layered-like hydroxide containing zinc, aluminum and tin, preparation method thereof and application thereof in flame retardant material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: Preparation of phosphate-intercalated layered hydroxides containing zinc, aluminum and tin

[0036]Weigh respectively 0.025mol of sodium metaaluminate and 0.025mol of sodium hydroxide and dissolve them in 7.2mL of deionized water to form an aqueous solution (A) containing 10% sodium hydroxide and 20% sodium metaaluminate; weigh tin chloride 0.025mol, zinc chloride 0.9375mol, dissolved in 100mL deionized water to make tin chloride and zinc chloride aqueous solution (B); weigh disodium hydrogen phosphate 0.0125mol and dissolve in 100ml deionized water to make sodium salt solution (C).

[0037] At room temperature, pour the (C) solution into a 250mL three-necked round-bottomed flask, and at the same time, slowly drop the (A) and (B) solutions into the (C) solution with a dropping funnel and stir with an electric mixer. , stirred at room temperature for half an hour, adjusted the pH value of the reaction solution to 10-12 with aqueous sodium hydroxide solution, ...

Embodiment 2

[0038] Example 2: Preparation of Epoxy Acrylate Flame Retardant Material Containing Zinc-Aluminum-Tin-Phosphate-Intercalated Layered Hydroxide

[0039] According to the formula in Table 1, prepare a flame retardant coating with a total mass of 10 g. First, weigh 20 parts of acrylamide (AM), disperse and dissolve it in 15 parts of acrylic acid (AA) with a 1000-watt ultrasonic cleaner for 30 minutes, and then dissolve 2.5 to 15 parts ZnCl 2 Dissolve in the above solution by ultrasonication for 10 min, and then add 0 to 10 parts of the zinc-aluminum-tin-containing phosphate intercalation layered hydroxide Zn prepared in Example 1 7.5 Al 2 sn 2 PO 4 -LDH, use an ultrasonic cleaner for about 20 minutes to disperse in the acrylic acid solution dissolved in zinc chloride and acrylamide, and finally add 36 to 61 parts of epoxy acrylate (EA), and then use an ultrasonic cleaner for 30 minutes to disperse it Dissolve until the system is uniform, and then ultrasonically oscillate for ...

Embodiment 3

[0043] Example 3: Morphological Analysis of Phosphate Intercalated Layered Hydroxides Containing Zinc, Aluminum and Tin

[0044] figure 1 for Zn 7.5 Al 2 sn 2 PO 4 - SEM image of LDH. Depend on figure 1 It can be seen that it is a nanorod structure with a diameter of about 20nm and a length of about 200nm.

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Abstract

The invention discloses phosphate-radical-intercalated layered-like hydroxide containing zinc, aluminum and tin, a preparation method thereof and application thereof in a flame retardant material. Thephosphate-radical-intercalated layered-like hydroxide containing zinc, aluminum and tin is prepared and compounded, as a char-forming catalyst and a flame retardant, with zinc chloride, acrylamide, acrylic acid and epoxy acrylate to prepare an epoxy acrylate intumescent flame retardant material containing phosphorus, nitrogen, zinc, aluminum and tin, with the material being a low-additive-contenthighly flame retardant acrylate transparent material. A uniform porous charcoal foam layer is generated when phosphorus and a metal Lewis acid are combined to catalyze EA coating combustion in a synergistic manner, thus playing roles of oxygen isolation, heat insulation, smoke suppression, molten drop preventing, and the like, improving flame retardant performance of an epoxy acrylate flame retardant material and improving mechanical performance of the epoxy acrylate flame retardant material. The preparation method is simple and cheap. The hydroxide and the material can be used for the fieldof decorative surface type fireproof flame retardant coating for wooden furniture and ancient wood buildings, and have wide market prospects.

Description

technical field [0001] The invention belongs to the technical field of epoxy acrylate flame-retardant materials, and in particular relates to a zinc-aluminum-tin-containing phosphate-intercalated layered hydroxide, a preparation method thereof, and an application thereof in flame-retardant materials. Background technique [0002] Transparent fireproof coating is a type of decorative fireproof coating developed based on the ability to maintain the appearance of the substrate and meet the needs of fire prevention. It is used to protect the surface of ancient buildings, living furniture and fabric decorations without changing their appearance. Appearance and color, it can expand in case of fire and form a uniform and dense honeycomb or spongy carbon foam layer, which has a good protective effect on combustibles and prevents them from being damaged by fire. Important role, has a huge market prospect. Compared with urea-formaldehyde and melamine resins, acrylate resins have the ...

Claims

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Application Information

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IPC IPC(8): C09D163/10C09D5/18
CPCC09D5/185C09D163/10C08K9/02C08K7/00C08K3/22
Inventor 杨磊
Owner PUTIAN UNIV
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