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Low-smoke aluminum hypophosphite compounded fire retardant and preparation method thereof

A technology of compounding flame retardant and aluminum hypophosphite, applied in the chemical field, can solve problems such as toxicity, and achieve the effects of reducing the reduction of polymer mechanical properties, good flame retardant and smoke suppression performance, and improving compatibility

Inactive Publication Date: 2013-08-28
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although traditional halogen-containing flame retardants have high flame retardant efficiency, their combustion will produce a large amount of toxic and corrosive gases. The current development trend of flame retardants is halogen-free

Method used

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  • Low-smoke aluminum hypophosphite compounded fire retardant and preparation method thereof
  • Low-smoke aluminum hypophosphite compounded fire retardant and preparation method thereof
  • Low-smoke aluminum hypophosphite compounded fire retardant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A low-smoke aluminum hypophosphite compound flame retardant, comprising the following raw materials:

[0024] Aluminum hypophosphite 25kg (main content above 99%), hydrotalcite 10kg, zinc borate 10kg, diatomaceous earth 4kg, magnesium oxide 3kg, tetrabutyl titanate coupling agent 1kg;

[0025] Its preparation method comprises the following steps:

[0026] S1. Weigh the raw materials of low-smoke aluminum hypophosphite compound flame retardant:

[0027] S2. Put the above-mentioned prepared components into a high-speed mixer with water cooling function and mix evenly, the mixing time is 40min, and control the temperature of the material in the mixer to be lower than 100°C during the mixing process;

[0028] S3. Transport the uniformly mixed material to the vibrating screen for preliminary screening, remove large particles or agglomerated materials, and then transport the preliminary screened material to the centrifugal screen for secondary screening; the vibrating screen...

Embodiment 2

[0031] The difference from Example 1 is: Weigh low-smoke aluminum hypophosphite compound flame retardant raw materials: aluminum hypophosphite 50kg (main content more than 99%), hydrotalcite 30kg, zinc borate 30kg, diatomaceous earth 8kg, oxidized Magnesium 8kg, tetrabutyl titanate coupling agent 3kg;

[0032] Its preparation method:

[0033] First, put the above-mentioned prepared components into a high-speed mixer with water cooling function and mix them evenly. The mixing time is 50 minutes, and during the mixing process, the temperature of the materials in the mixer is controlled to be lower than 100°C;

[0034] Secondly, the uniformly mixed material is sent to the vibrating screen for preliminary screening to remove large particles or agglomerated materials, and then the preliminary screened material is sent to the centrifugal screen for secondary screening; the model of the vibrating screen is ZS -650, motor 1.5kw, speed 1370rpm; centrifugal sieve model is LXS-300.

[...

Embodiment 3

[0037] The difference from Example 1 is: Weigh low-smoke aluminum hypophosphite compound flame retardant raw materials: aluminum hypophosphite 40kg (main content above 99%), hydrotalcite 15kg, zinc borate 15kg, diatomaceous earth 6kg, oxidized Magnesium 4kg, tetrabutyl titanate coupling agent 1kg;

[0038] Its preparation method is as follows:

[0039] First, put the above-mentioned prepared components into a high-speed mixer with water cooling function and mix them evenly. The mixing time is 60 minutes, and during the mixing process, the temperature of the materials in the mixer is controlled to be lower than 100°C;

[0040] Secondly, the uniformly mixed material is sent to the vibrating screen for preliminary screening to remove large particles or agglomerated materials, and then the preliminary screened material is sent to the centrifugal screen for secondary screening; the model of the vibrating screen is ZS -650, motor 1.5kw, speed 1370rpm; centrifugal sieve model is LXS...

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Abstract

The invention belongs to the field of chemical industry, and aims at providing a low-smoke aluminum hypophosphite compounded fire retardant with excellent fire resistance and smoke suppression performance, and a preparation method thereof. The fire retardant is formed by 30-60 parts by weight of aluminum hypophosphite, 20-40 parts by weight of hydrotalcite, 20-40 parts by weight of zinc borate, 5-10 parts by weight of diatomite, 5-10 parts by weight of magnesium oxide and 1-3 parts of coupling agent in a manner of mixing and screening. The coupling agent is a tetrabutyl titanate coupling agent or an aluminate coupling agent. The fire retardant has excellent fire resistance and smoke suppression performance, and after the compounded fire retardant is added, the mechanical property of polymers is not obliviously reduced.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to a flame retardant, in particular to a low-smoke aluminum hypophosphite compound flame retardant and a preparation method thereof. Background technique [0002] Studies have shown that in a fire, smoke is the first and most lethal factor. According to expert statistics, more than 80% of the people who died from fire accidents in the world were suffocated by the smoke and toxic gases released by the burning of polymer materials, not by open flames. When polymer materials are burned, more smoke and toxic gases are produced. This kind of smoke gas is the most dangerous factor in the fire, because their diffusion speed is much faster than that of the flame, which hinders people's evacuation and extinguishing work during the fire. , resulting in serious loss of life and property. Therefore, in the field of flame retardant research, flame retardant and smoke suppression are two eternal t...

Claims

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Application Information

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IPC IPC(8): C08K13/02C08K3/32C08K3/26C08K3/38C08K3/34C08K3/22
Inventor 张良
Owner YANCHENG INST OF TECH
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