Preparation method of halogen-free intumescent flame retardant composition containing metal ions and formed halogen-free flame retardant polyolefin composition

A technology of intumescent flame retardants and metal ions, which is applied in the field of halogen-free flame-retardant polyolefin compositions, can solve the problems of single system and narrow application range, and improve the flame-retardant performance of polymers. The effect of applying the foreground

Inactive Publication Date: 2017-05-17
广东顺德同程新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to aim at the defects of the prior art that the pyro(poly)phosphate piperazine salt flame retardant system is single and the application range is narrow, and firstly provide a metal ion-containing halogen-free intumescent flame retardant composition

Method used

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  • Preparation method of halogen-free intumescent flame retardant composition containing metal ions and formed halogen-free flame retardant polyolefin composition
  • Preparation method of halogen-free intumescent flame retardant composition containing metal ions and formed halogen-free flame retardant polyolefin composition
  • Preparation method of halogen-free intumescent flame retardant composition containing metal ions and formed halogen-free flame retardant polyolefin composition

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Embodiment approach

[0023] Embodiment of the preparation method of the metal ion-containing halogen-free intumescent flame retardant composition of the present invention: a preparation method of the metal ion-containing halogen-free intumescent flame retardant composition comprises the following steps:

[0024] (1) After weighing piperazine diphosphate and aluminum dihydrogen phosphate dimelamine salt in proportion, place them in a high-speed mixer and mix them evenly, then wait until the metal ion-containing halogen-free expansion flame retardant composition premix;

[0025] (2) The above-mentioned premix is ​​subjected to a high-temperature dehydration condensation reaction to obtain a metal ion-containing halogen-free expansion flame retardant composition comprising poly(pyro)piperazine phosphate and polymelamine aluminum phosphate in the structure, and its general structure is as follows:

[0026]

[0027] In the formula, n is an integer of 0-100, preferably 2-50; m is an integer of 0-50, p...

Embodiment 1

[0059] The molar ratio of piperazine diphosphate and aluminum dihydrogen phosphate dimelamine salt is 4:1, and the total weight is 100kg. They are placed in a high-speed mixer and mixed uniformly to obtain a premixed composition containing metal ion-free halogen-free expansion flame retardant, and then the premix containing The metal ion halogen-free intumescent flame retardant composition premix is ​​placed in an atmosphere-protected rotary kiln for high-temperature dehydration condensation reaction to obtain 98.2kg of metal ion-containing halogen-free intumescent flame retardant composition containing piperazine polyphosphate and polymelamine phosphate aluminum salt . Among them, the dehydration condensation temperature is 280 ° C, by using nitrogen as the protective gas, the rotation speed is 20 rpm, and the heating time is 4 h; the appearance, yield, phosphorus content and heat resistance of the metal ion-containing halogen-free intumescent flame retardant composition The ...

Embodiment 2

[0061] The molar ratio of piperazine diphosphate to aluminum dihydrogen phosphate dimelamine salt is 3:1, and the others are the same as in Example 1. The appearance, yield, phosphorus content and heat resistance of the metal ion-containing halogen-free expansion flame retardant composition The measurements were carried out and the results are listed in Table 1.

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Abstract

The invention discloses a preparation method of a halogen-free intumescent flame retardant composition containing metal ions, relating to the technical field of intumescent flame retardant polyolefin compositions. The method comprises the steps of (1) weighing diphosphate piperazine and aluminum dihydrogen phosphate dimelamine salt according to the ratio, stirring and mixing evenly in a high-speed stirring mixer to obtain a halogen-free intumescent flame retardant composition premix containing the metal ions, wherein n in the structural general formula is an integer of 0-100, preferably 2-50, and m is an integer of 0-50, preferably 2-10; and (2) carrying out dehydration-condensation reaction on the premix to obtain halogen-free intumescent flame retardant composition containing the metal ions, which comprises poly(charred) piperazine phosphate and polymelamine phosphate aluminum in structure, wherein the synthesis method of the aluminum dihydrogen phosphate dimelamine salt in the step (1) comprises the steps of reacting aluminum dihydrogen phosphate and melamine in a water phase at a certain temperature according to a certain molar ratio for a period of time, carrying out suction filtration, washing and drying.

Description

technical field [0001] The invention belongs to the technical field of polyolefin intumescent flame retardant compositions, and in particular relates to a preparation method of a metal ion-containing halogen-free intumescent flame retardant composition and a halogen-free flame retardant polyolefin composition composed thereof. Background technique [0002] When intumescent flame retardants are used in flame retardant polymers, not only will the thermal decomposition of the condensed phase promote the formation of a coke layer of solid phase products due to heating, but also the gas phase will release inert gases. The charcoal layer expands. This kind of carbon layer can play the role of heat insulation, oxygen insulation, smoke suppression and droplet prevention, and has low smoke and low toxicity, which is very consistent with the sustainable development strategy of environmental protection and flame retardant requirements. [0003] A new type of halogen-free intumescent f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G79/04C08L23/12C08L27/18C08L85/02
Inventor 吕强程飞黄仁义范晓凌梁中发齐兴旺
Owner 广东顺德同程新材料科技有限公司
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