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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Problems solved by technology

Although traditional halogen-containing flame retardants have high flame retardant efficiency, their combustion will ...

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.

Technology Topic

Chemical industryMagnesium +11

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Examples

Experimental program(6)
Effect test(1)

Example Embodiment

[0022] Example 1:

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

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

[0025] The preparation method includes the following steps:

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

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

[0028] S3. Transport the uniformly mixed materials to the vibrating screen for preliminary screening, remove large particles or agglomerated materials, and then transport the preliminary screened materials to the centrifugal screen for secondary screening; the vibrating screen model is ZS -650, motor 1.5kw, speed 1370rpm; model of centrifugal screen is LXS-300.

[0029] S4. The materials sieved from the centrifugal screen are transported to the packaging line for packaging, and the finished product of low-smoke aluminum hypophosphite compound flame retardant is obtained.

Example Embodiment

[0030] Example 2:

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

[0032] Its preparation method:

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

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

[0035] Finally, the materials sieved from the centrifugal screen are transported to the packaging line for packaging, and the finished product of low-smoke aluminum hypophosphite compound flame retardant is obtained.

Example Embodiment

[0036] Example 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, oxidation Magnesium 4kg, tetrabutyl titanate coupling agent 1kg;

[0038] The preparation method is as follows:

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

[0040] Secondly, transport the uniformly mixed materials to the vibrating screen for preliminary screening, remove large particles or agglomerated materials, and then transport the preliminary screened materials to the centrifugal screen for secondary screening; the vibrating screen model is ZS -650, motor 1.5kw, speed 1370rpm; model of centrifugal screen is LXS-300.

[0041] Finally, the materials sieved from the centrifugal screen are transported to the packaging line for packaging, and the finished product of low-smoke aluminum hypophosphite compound flame retardant is obtained.

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

AI-Extracted Technical Summary

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Description & Claims & Application Information

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