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Flame-retardant smoke-suppressing mineral compound and preparation method and application thereof

A compound and mineral technology, applied in the field of flame retardants, can solve the problems of high price, non-adsorption, and high production costs of smoke suppressants, and achieve enhanced smoke suppression effects, low cost, and good flame retardant effects

Pending Publication Date: 2021-12-24
JIANGXI GUANGYUAN CHEM +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In flame retardant materials, the traditional smoke suppression method is mainly to add compounds with smoke suppression and flame retardant effects, such as molybdenum compounds (molybdenum trioxide, ammonium molybdate, melamine octamolybdate) and their compounds, tin compounds, Magnesium-zinc compound, ferrocene, antimony trioxide, etc. These smoke suppressants are expensive and costly to produce. At the same time, these smoke suppressants cannot effectively adsorb the HCl gas produced by the decomposition of PVC.

Method used

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  • Flame-retardant smoke-suppressing mineral compound and preparation method and application thereof
  • Flame-retardant smoke-suppressing mineral compound and preparation method and application thereof
  • Flame-retardant smoke-suppressing mineral compound and preparation method and application thereof

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preparation example Construction

[0043] The present invention provides a preparation method of the above-mentioned flame-retardant and smoke-suppressing mineral compound, comprising the following steps:

[0044] (1) Mix brucite, lamellar silicate minerals containing structural water, the first dispersant with water, and perform the first wet grinding to obtain a premixed mineral slurry;

[0045] (2) mixing zeolite, surfactant and water, and performing second wet grinding to obtain zeolite slurry;

[0046] (3) mixing the premixed mineral slurry, the zeolite slurry and the second dispersant, adjusting the pH value of the resulting mixed solution to 8.5-10, performing liquid phase deposition, solid-liquid separation and drying in sequence to obtain a mixed powder;

[0047] (4) mixing the mixed powder with zinc borate and a silane surface modifier to obtain a flame-retardant and smoke-suppressing mineral compound;

[0048] There is no time sequence limitation between the step (1) and the step (2).

[0049] The ...

Embodiment 1

[0065] The raw ore of brucite with MgO content of 62% and hydrotalcite were homogenized at a mass ratio of 10:1 and then dry-ground to obtain a 325-mesh powder. The dry-ground powder was mixed with water to make a slurry with a solid content of 35%. Add 7‰ sodium polyacrylate and sodium oleate in the process of preparing slurry, and carry out wet grinding. The temperature of wet grinding is 65°C, the grinding time is 60min, and the viscosity of the system is 250mpa / s; obtained after wet grinding The ultra-fine composite slurry and the pretreated zeolite slurry are subjected to liquid phase deposition. The stirring speed of liquid phase deposition is 60r / min, the temperature is 65°C, and the deposition time is 2h. Adjust the pH value of the slurry to 9.5; after dehydration and drying, the composite powder is mechanically stirred and compounded with nano-zinc borate accounting for 5% of the total weight of the powder, the stirring speed is 300r / min, and the temperature is 100 °C;...

Embodiment 2

[0068] The raw ore of brucite with MgO content of 60% and montmorillonite were homogenized at a mass ratio of 6:1 and then dry-ground to obtain a 325-mesh powder. The dry-ground powder was mixed with water to have a solid content of 30%. Slurry, add 9‰ sodium polyacrylate and polyaminoamide phosphate in the process of preparing slurry, and carry out wet grinding. The temperature of wet grinding is 75°C, the grinding time is 80min, and the viscosity of the system is 300mpa / s; wet grinding The obtained ultrafine composite slurry and the pretreated zeolite slurry are subjected to liquid phase deposition, the liquid phase deposition stirring speed is 75r / min, the temperature is 75°C, the deposition time is 3h, and the powder mass of 5‰ ammonium polyacrylate is added Dispersant, adjust the pH value of the slurry to 9.5; the composite powder obtained after dehydration and drying is mechanically stirred and compounded with nano-zinc borate accounting for 3% of the total weight of the ...

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Abstract

The invention provides a flame-retardant smoke-suppressing mineral compound and a preparation method and application thereof, and belongs to the technical field of flame retardance. According to the invention, brucite is used as a flame retardant, so that a good flame-retardant effect can be achieved; by adding the zeolite slurry, water molecules stored in an internal space structure of zeolite are heated and released at a high temperature, a large amount of water vapor can be released to cover the surface of the PVC base material, smoke generated during combustion of the PVC base material is reduced, and meanwhile, the zeolite releasing the water molecules forms a space structure containing a large number of gaps, and a large amount of HCl gas can be absorbed. According to the invention, by adding the lamellar silicate mineral containing the structural water, the structural water contained in the silicate mineral can be decomposed when the silicate mineral is heated, a large amount of water vapor is generated, and the generated water vapor can take away a large amount of smoke generated during combustion of PVC so that a synergistic smoke suppression effect is achieved. Meanwhile, the raw materials adopted by the invention are low in cost and wide in source.

Description

technical field [0001] The invention relates to the technical field of flame retardants, in particular to a flame-retardant and smoke-suppressing mineral compound as well as its preparation method and application. Background technique [0002] PVC flame retardant film is an important PVC flame retardant material. PVC flame-retardant film refers to a type of film with a thickness of 0.1-0.3mm prepared by calendering with PVC as the base material, adding plasticizers, fillers, stabilizers, flame retardants and other related additives. The main varieties are PVC ceiling film, PVC flame-retardant tarpaulin, PVC flame-retardant decorative film, PVC flame-retardant advertising cloth, etc. Due to its high flame retardant grade (for example, the export order needs to reach the German standard B1 grade), it is necessary to add 10 to 15% of antimony trioxide (Sb 2 o 3 ) as the main flame retardant, but antimony trioxide is limited in terms of smoke suppression. [0003] According ...

Claims

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Application Information

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IPC IPC(8): C08K3/22C08K7/00C08K3/26C08K3/34C08K7/26C08K3/38C08K9/06C08K9/04C08L27/06
CPCC08K3/22C08K7/00C08K3/26C08K3/346C08K7/26C08K3/38C08K9/06C08K9/04C08K2003/2224C08K2003/387C08L2201/02C08L2203/16C08L27/06
Inventor 彭鹤松邱文福刘伟强邹检生吴维冰张小建
Owner JIANGXI GUANGYUAN CHEM
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