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Preparation method of halogen-free flame-retardant composition and flame-retardant polyolefin composition consisting of same

A technology for a composition and a flame retardant, applied in the field of flame retardant composition, can solve the problems of multiple equipment, cost, unfavorable flame retardant performance stability, etc., and achieves low equipment requirements, good industrial application prospects, and simple and easy process. Effect

Inactive Publication Date: 2015-11-04
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned patents all use melamine pyro(poly)phosphate and piperazine pyrophosphate prepared separately to obtain a flame retardant composition after mixing, which requires more equipment and cost in production, which brings More processes, and it is not conducive to the stability of flame retardant performance

Method used

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  • Preparation method of halogen-free flame-retardant composition and flame-retardant polyolefin composition consisting of same
  • Preparation method of halogen-free flame-retardant composition and flame-retardant polyolefin composition consisting of same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Put melamine phosphate and piperazine diphosphate at a molar ratio of 3:1, with a total weight of 100kg, 1kg of nano-zinc oxide, 1kg of dimethyl polysiloxane, and 3kg of nano-calcium silicate as activation aids, and place them in a high-speed mixer After stirring and mixing uniformly in the medium, the premix of the halogen-free flame retardant composition was obtained; then the premix of the halogen-free flame retardant composition was placed in a Banbury mixer for high-temperature dehydration condensation reaction to obtain 97.2kg of coke (poly ) melamine phosphate and piperazine pyro(poly)phosphate as the main components of a halogen-free flame retardant composition, wherein the vacuum degree is controlled at 0.025MPa, the dehydration condensation temperature is 250°C, the rotation speed is 20rpm, and the heating time is 4h; The appearance, yield, phosphorus content and whiteness index (W value) of the halogen-free flame retardant composition were tested, and the resu...

Embodiment 2

[0063] The molar ratio of melamine phosphate and piperazine diphosphate is 2.5:1, and the others are the same as in Example 1; the appearance, yield, phosphorus content and whiteness index (W value) of the halogen-free flame retardant composition were tested, and the results Listed in Table 1.

Embodiment 3

[0065] The molar ratio of melamine phosphate and piperazine diphosphate is 2:1, and the others are the same as in Example 1; the appearance, yield, phosphorus content and whiteness index (W value) of the halogen-free flame retardant composition were tested, and the results Listed in Table 1.

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Abstract

The invention discloses a preparation method of a halogen-free flame-retardant composition. The preparation method comprises the following steps: (a) weighing melamine phosphate, piperazine diphosphate and assistant activator in a proportion, and putting in a high-speed mixing machine for stirring and mixing uniformly to obtain a halogen-free flame-retardant composition premix; and (b) performing a high-temperature dehydration condensation reaction on the halogen-free flame-retardant composition to obtain the halogen-free flame-retardant composition taking burnt (poly) melamine phosphate and burnt (poly) piperazine sulfate as main components. According to the preparation method of the halogen-free flame-retardant composition disclosed by the invention, the technology is simple and practicable, the requirement for equipment is low, the yield of product is as high as more than 90%, the phosphorus content is high, and the impurities such as halogen or inorganic salt are not contained; a flame-retardant polyolefin composition prepared from the halogen-free flame-retardant composition can obtain good flame-retardant performance after a small amount of halogen-free flame-retardant composition is added, and the composition has high water resistance and heat resistance and excellent pigmenting property, can be prepared into various forming products according to different uses, and has excellent industrial application prospect.

Description

technical field [0001] The invention relates to the technical field of flame retardant compositions, in particular to a preparation method of a halogen-free flame retardant composition and a flame retardant polyolefin composition composed of the same. Background technique [0002] The halogen-free flame retardant properties of polymer resins have been the most concerned topic in the flame retardant industry in the past ten years. In the existing flame-retardant modified polyolefins, in order to meet the requirements of non-halogenation, it is necessary to choose to add flame retardants containing phosphorus, nitrogen or their compound systems. The most commonly used phosphorus-containing flame retardants and their compositions mainly include microencapsulated red phosphorus, phosphoric acid esters, and intumescent flame-retardant systems mainly composed of ammonium polyphosphate. However, compared with the traditional bromine-antimony compound flame retardant system, these ...

Claims

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Application Information

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IPC IPC(8): C08K5/3492C08K5/3462C08L23/12C08L23/06
Inventor 杨友强姜向新杨霄云肖鹏陆湛泉
Owner KINGFA SCI & TECH CO LTD
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