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A kind of flame retardant with surface mobility and preparation method thereof

A technology of surface migration and flame retardants, applied in the field of flame retardants, can solve problems such as impact and unfavorable material properties, and achieve the effects of simple process, low cost, and good thermal stability

Active Publication Date: 2019-04-16
东莞市大展吉源新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it has good flame retardant properties, as the amount added increases, it will have some adverse effects on the properties of the material itself

Method used

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  • A kind of flame retardant with surface mobility and preparation method thereof
  • A kind of flame retardant with surface mobility and preparation method thereof
  • A kind of flame retardant with surface mobility and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of synthetic steps of flame retardant with surface mobility is:

[0032] (1) 7.5g of biphenylphosphoramidate and 6.8g of 8-trifluoromethylquinoline-2-carbaldehyde were heated in 85.5g of ethanol at 70°C for 6h. After the reaction was over, the intermediate product I was obtained. reaction system;

[0033] (2) Add 6.5g of DOPO to the reaction system containing the intermediate product I obtained in step (1) and heat at 70°C for 5h. After the reaction, wash and dry to obtain a flame retardant with surface mobility. Yield 84.5%.

[0034] The infrared test results are as follows:

[0035] FTIR (KBr): N-H stretching vibration peak 3410cm -1 , C-H stretching vibration peak 3070cm -1 , C-N characteristic peak 1288cm -1 , C-F characteristic peak 1100cm -1 , P-O-C characteristic peak 1032cm -1 , P-O-Ph characteristic peak 1231cm -1 , P-Ph characteristic peak 1595cm -1 , P=O characteristic peak 1212cm -1 , the out-of-plane bending vibration peak of the aromatic h...

Embodiment 2

[0039] A kind of synthetic steps of flame retardant with surface mobility is:

[0040] (1) 12.5g of biphenylphosphoramidate and 11.3g of 8-trifluoromethylquinoline-2-carbaldehyde were heated in 214.2g DMF at 70°C for 8h. After the reaction, intermediate product I was obtained. reaction system;

[0041] (2) Add 10.8g of DOPO to the reaction system containing the intermediate product I obtained in step (1) and heat at 70°C for 6.5h. After the reaction, wash and dry to obtain a flame retardant with surface mobility , yield 85.8%.

[0042] The infrared test results are as follows:

[0043] FTIR (KBr): N-H stretching vibration peak 3440cm -1 , C-H stretching vibration peak 3080cm -1 , C-N characteristic peak 1288cm -1 , C-F characteristic peak 1100cm -1 , P-O-C characteristic peak 1035cm -1 , P-O-Ph characteristic peak 1235cm -1 , P-Ph characteristic peak 1595cm -1 , P=O characteristic peak 1212cm -1 , the out-of-plane bending vibration peak of aromatic hydrogen is 850cm ...

Embodiment 3

[0045] A kind of synthetic steps of flame retardant with surface mobility is:

[0046] (1) 24.9g of biphenylphosphoramidate and 22.5g of 8-trifluoromethylquinoline-2-carbaldehyde were heated in 568.8g DMF at 70°C for 10h. After the reaction, intermediate product I was obtained. reaction system;

[0047] (2) Add 21.6g of DOPO to the reaction system containing the intermediate product I obtained in step (1) and heat at 70°C for 8h. After the reaction, wash and dry to obtain a flame retardant with surface mobility. Yield 87.1%.

[0048] The infrared test results are as follows:

[0049] FTIR (KBr): N-H stretching vibration peak 3430cm -1 , C-H stretching vibration peak 3065cm -1 , C-N characteristic peak 1288cm -1 , C-F characteristic peak 1105cm -1 , P-O-C characteristic peak 1035cm -1 , P-O-Ph characteristic peak 1235cm -1 , P-Ph characteristic peak 1595cm -1 , P=O characteristic peak 1213cm-1 , the out-of-plane bending vibration peak of aromatic hydrogen is 800cm -1 ...

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Abstract

The invention relates to the technical field of flame retardants and particularly relates to a flame retardant having surface migration property, of which the structure formula is represented as follows. A preparation method of the flame retardant includes the following steps: 1) heating diphenyl phosphoramidate and 8-trifluoromethylquinoline-2-formaldehyde in a solvent, and when the reaction is finished, a reaction system comprising an intermediate product (I) is produced; and 2) adding DOPO to the reaction system, heating the mixture, and when the reaction is finished, washing and drying a product to prepare the flame retardant having surface migration property. With increase of content of phosphorus in a cured material, flame retarding performance of the cured material is enhanced. When the content of the flame retardant reaches 5-10%, the cured material can reach UL-94, V-0 grade.

Description

technical field [0001] The invention relates to the technical field of flame retardants, in particular to a flame retardant with surface mobility and a preparation method thereof. Background technique [0002] Halogenated flame retardants are a class of flame retardants that contain halogen elements and use halogen elements as a flame retardant. The four halogen elements of the halogen series, fluorine (F), chlorine (Cl), bromine (Br), and iodine (I), all have flame retardancy, and the flame retardancy effect is enhanced in the order of F, Cl, Br, and I. Iodine-based flame retardants are the strongest. In production, only chlorine and bromine flame retardants are widely used. Fluorine and iodine flame retardants are rarely used because the C-F bond in fluorine-containing flame retardants is too strong to effectively capture free radicals. And The C-I bond of the I-containing flame retardant is too weak and easy to be destroyed. It affects the properties of the polymer (suc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F9/6574C08K5/5399C08L25/06
CPCC07F9/65744C08K5/5399C08L2201/02C08L2201/08C08L25/06
Inventor 徐再徐惠凤徐靖丁磊赵琴芬卢路平
Owner 东莞市大展吉源新材料科技有限公司
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