Preparation method of compound microcapsule-coated ammonium polyphosphate master batch

A technology of coating ammonium polyphosphate and ammonium polyphosphate, which is applied in the field of preparation of compound microcapsule-coated ammonium polyphosphate masterbatch, can solve the problem of decreased tensile strength of flame-retardant products, high free formaldehyde content, and material compatibility Poor problems, to achieve the effect of improving compatibility, reducing formaldehyde content, and increasing processing temperature

Inactive Publication Date: 2015-11-25
ZIBO FUEN CHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When ammonium polyphosphate is used as a flame retardant in engineering plastics such as PP, PE, ABS and other materials, due to its own properties, there is precipitation, and it is not resistant to high temperatures and has poor compatibility with materials. The current patent discloses the use of Melamine-formaldehyde resin coating, a method for preparing APP powder with good water resistance, compared with unprocessed APP, the water solubility is low and the stability is improved
However, the tensile strength of flame retardant products has decreased, and the phenomenon of dripping is serious. The content of free formaldehyde in the coated APP is high, and formaldehyde is continuously released in the subsequent processing, causing pollution.
Due to the powder form, it will cause a certain degree of dust pollution, which is not conducive to the operation of workers

Method used

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Comparison scheme
Effect test

Embodiment 1

[0031] The present invention provides a kind of preparation method of compound type microcapsule coating ammonium polyphosphate masterbatch, it is characterized in that, its step comprises as follows:

[0032] 1) Weigh the formaldehyde solution and melamine powder, and add them to the reaction kettle to stir;

[0033] 2) adding sodium hydroxide solution, adjusting the pH value of the solution to 7, stirring and heating for 2 hours to obtain a melamine-formaldehyde resin prepolymer;

[0034] 3) Add distilled water to ethanol, and stir evenly to obtain ethanol aqueous solution;

[0035] 4) Add the ammonium polyphosphate into the aqueous ethanol solution and stir evenly;

[0036] 5) Add the melamine formaldehyde resin prepolymer to the aqueous ethanol solution containing ammonium polyphosphate, and stir at a constant temperature of 80°C for 2 hours;

[0037] 6) After the reaction is completed, filter and dry with a flash dryer to obtain ammonium polyphosphate powder coated with...

Embodiment 2

[0042] The present invention provides a kind of preparation method of compound type microcapsule coating ammonium polyphosphate masterbatch, it is characterized in that, its step comprises as follows:

[0043] 1) Weigh the formaldehyde solution and melamine powder, and add them to the reaction kettle to stir;

[0044] 2) adding sodium hydroxide solution, adjusting the pH of the solution to 9, stirring and heating for 2 hours to obtain a melamine-formaldehyde resin prepolymer;

[0045] 3) Add distilled water to ethanol, and stir evenly to obtain ethanol aqueous solution;

[0046] 4) Add the ammonium polyphosphate into the aqueous ethanol solution and stir evenly;

[0047] 5) Add the melamine formaldehyde resin prepolymer to the aqueous ethanol solution containing ammonium polyphosphate, and stir at a constant temperature of 80°C for 2 hours;

[0048] 6) After the reaction is completed, filter and dry with a flash dryer to obtain ammonium polyphosphate powder coated with micro...

Embodiment 3

[0054] The present invention provides a kind of preparation method of compound type microcapsule coating ammonium polyphosphate masterbatch, it is characterized in that, its step comprises as follows:

[0055] 1) Weigh the formaldehyde solution and melamine powder, and add them to the reaction kettle to stir;

[0056] 2) adding sodium hydroxide solution, adjusting the pH value of the solution to 8, stirring and heating for 2 hours to obtain a melamine-formaldehyde resin prepolymer;

[0057] 3) Add distilled water to ethanol, and stir evenly to obtain ethanol aqueous solution;

[0058] 4) Add the ammonium polyphosphate into the aqueous ethanol solution and stir evenly;

[0059] 5) Add the melamine formaldehyde resin prepolymer to the aqueous ethanol solution containing ammonium polyphosphate, and stir at a constant temperature of 80°C for 2 hours;

[0060] 6) After the reaction is completed, filter and dry with a flash dryer to obtain ammonium polyphosphate powder coated with...

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Abstract

The invention discloses a preparation method of a compound microcapsule-coated ammonium polyphosphate master batch. The preparation method comprises that melamine and a formaldehyde solution form a performed polymer, the performed polymer is coated with ammonium polyphosphate in an ethanol aqueous solution, the ammonium polyphosphate-coated performed polymer and epoxy-modified organic silicone resin are mixed and pressed to form the master batch by polymerization. The preparation method improves a processing temperature, widens an application range, utilizes organosilicon to improve a char yield and promotes flame retardation effects.

Description

technical field [0001] The invention belongs to the field of material preparation, and in particular relates to a preparation method of compound microcapsule-coated ammonium polyphosphate masterbatch. Background technique [0002] When ammonium polyphosphate is used as a flame retardant in engineering plastics such as PP, PE, ABS and other materials, due to its own properties, there is precipitation, and it is not resistant to high temperatures and has poor compatibility with materials. The current patent discloses the use of Melamine-formaldehyde resin coating is a method for preparing APP powder with good water resistance. Compared with unprocessed APP, the water solubility is low and the stability is improved. However, the tensile strength of flame-retardant products has decreased, and the droplet phenomenon is serious. The free formaldehyde content in the coated APP is high, and formaldehyde is continuously released during subsequent processing, causing pollution. Due t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08K9/10C08K3/32C08G12/32
Inventor 鲁丽
Owner ZIBO FUEN CHEM TECH CO LTD
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