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Reactive organic metal hydroxide flame retardant and its preparation method

A technology of hydroxides and organic metals, applied in the treatment of dyed low-molecular organic compounds, fibrous fillers, etc., can solve the problems of low flame retardant efficiency, poor interface bonding, poor compatibility, etc., and increase the interface contact area , good mechanical properties, and the effect of improving flame retardant efficiency

Active Publication Date: 2014-05-28
奇思创(南京)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of metal hydroxides as flame retardants has the following problems: first, the flame retardant efficiency is relatively low, requiring a higher amount of addition to increase the interaction area with the polymer matrix to improve the flame retardant effect; The compatibility of the polymer matrix is ​​poor, and it is difficult to disperse uniformly in the polymer, which will lead to poor interface bonding and deteriorate the mechanical properties and processing properties of the composite material
This method only reduces the amount of metal hydroxide and improves its dispersion and compatibility with the polymer matrix by adding other organic flame retardants. The essence of

Method used

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  • Reactive organic metal hydroxide flame retardant and its preparation method
  • Reactive organic metal hydroxide flame retardant and its preparation method
  • Reactive organic metal hydroxide flame retardant and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Take 50 parts of terephthalic acid and add it to 30 parts of N, N-dimethylformamide, ultrasonically oscillate for 15 minutes to obtain a terephthalic acid solution, and take another 17 parts of magnesium hydroxide, add it to the above solution, and use 150r / Min and stirred for 10 min, the suspension was heated to 90°C and stirred for 6 hours, then the suspension was filtered with suction, and the obtained solid was washed with 50 parts of dichloromethane for several times, and then dried at 60°C for 24 hours to obtain a Reactive organic magnesium hydroxide flame retardant.

[0034] In the above experimental process, the infrared spectra of the prepared organometallic magnesium hydroxide (OMS), magnesium hydroxide (MH) and terephthalic acid (PTA) are as follows figure 1 As shown, in the spectrum of PTA, 1725cm -1 The stretching vibration absorption peak of C=O, and the stretching vibration absorption peak of -COO- at 1650cm-1, due to the strong association of hydroxyl ...

Embodiment 2

[0036]Take 100 parts of terephthalic acid and add it to 70 parts of N, N-diethylformamide, ultrasonically oscillate for 20 minutes to obtain a terephthalic acid solution, and take another 17 parts of magnesium hydroxide, add it to the above solution, and use 200r / Stir for 30 minutes, raise the temperature of the suspension to 110°C and stir for 5 hours, then filter the suspension with suction, wash the obtained solid with 100 parts of ethanol for several times, and then dry it at 100°C for 12 hours to obtain a reaction type Organic magnesium hydroxide flame retardant.

Embodiment 3

[0038] Take 50 parts of terephthalic acid and add it to 60 parts of N-methylpyrrolidone, and ultrasonically vibrate for 30 minutes to obtain a terephthalic acid solution. Take another 35 parts of magnesium hydroxide, add it to the above solution, and stir at 300 r / min for 30 minutes. The suspension was heated to 130°C and stirred thoroughly for 4 hours, then the suspension was filtered with suction, the obtained solid was washed several times with 90 parts of dichloromethane, and then dried at 80°C for 18 hours to obtain a reactive organic hydrogen Magnesium oxide flame retardant.

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Abstract

The invention discloses a reactive organic metal hydroxide flame retardant and its preparation method. The organic metal hydroxide flame retardant is obtained through a reaction of terephthalic acid and a metal hydroxide in an organic solvent. The preparation method of the organic metal hydroxide flame retardant comprises the following steps: dissolving terephthalic acid in the organic solvent, adding the metal hydroxide, heating and stirring to carry out a reaction of carboxyl groups and hydroxide radicals of the metal hydroxide in order to generate an organic metal hydroxide flame retardant, and carrying out vacuum pumping filtration, washing, and drying to obtain the finished organic metal hydroxide flame retardant. The molecular structure of the flame retardant contains a carboxyl group and also contains a hydroxide radical, so the flame retardant can be grafted to a high-molecular long chain through the carboxyl group to realize the nature change of the metal hydroxide from an additive flame retardant to a reactive flame retardant.

Description

technical field [0001] The invention relates to an organometallic hydroxide flame retardant and a preparation method thereof, in particular to a flame retardant composed of terephthalic acid, metal hydroxide, an organic solvent and a washing solvent and a preparation method thereof. Background technique [0002] Flame retardants are divided into organic flame retardants and inorganic flame retardants. Organic flame retardants are divided into phosphorus flame retardants, halogen flame retardants (including chlorine and bromine) and nitrogen flame retardants; inorganic flame retardants are divided into antimony compounds, red phosphorus and phosphoric acid, Boron compounds, metal hydroxides, zirconium compounds and bismuth compounds, etc. With the development of science and technology and the improvement of people's awareness of environmental protection, the research and application of flame retardants are developing towards the direction of non-halogenation. Inorganic flam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/04C08K3/22C09C1/02C09C1/40C09C3/08
Inventor 晏泓张猛解晓玲许美贤杜向向魏丽乔许并社
Owner 奇思创(南京)科技有限公司
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