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Flame retardant, composite flame retardant and flame retardant polymer material containing the composite flame retardant

A composite flame retardant and flame retardant polymer technology, applied in the field of flame retardant polymer materials, can solve the problems of poor compatibility, easy precipitation of aryl phosphonates, low flame retardant efficiency of flame retardants, etc., and achieve mild conditions , the preparation method is simple, the effect of reducing production cost

Active Publication Date: 2020-03-17
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Phosphoric acid-aryl phosphonic acid metal salt and / or phosphorous acid-aryl phosphonic acid metal salt of layered single phase overcomes the respective deficiencies of existing (phosphite) phosphite and aryl phosphonic acid salt, especially overcomes existing Poor compatibility of (phosphite) with polymer materials, easy precipitation and low flame retardant efficiency of aryl phosphonate flame retardants in technology

Method used

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  • Flame retardant, composite flame retardant and flame retardant polymer material containing the composite flame retardant
  • Flame retardant, composite flame retardant and flame retardant polymer material containing the composite flame retardant
  • Flame retardant, composite flame retardant and flame retardant polymer material containing the composite flame retardant

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] Example 1 Zn(O 3 PH) 0.44 (O 3 PPh) 0.56 preparation of

[0101] Get 31.60 grams (0.20 moles) of phenylphosphonic acid and 16.40 grams (0.20 moles) of phosphorous acid and dissolve in 480 g of water, adjust to pH=11 with 5% sodium hydroxide aqueous solution, obtain mixed acid solution. Another 54.50 g (0.40 mol) of zinc chloride was dissolved in 545 g of water to obtain a zinc chloride solution.

[0102] With stirring at room temperature, the zinc chloride solution was slowly added dropwise to the mixed acid solution to obtain a large amount of white precipitate. The solvent was removed by suction filtration, and the obtained filter cake was washed with ethanol to obtain a white solid.

[0103] The resulting white solid was 31 P NMR test: Part of the white solid is completely dissolved in concentrated hydrochloric acid, and tested according to the aforementioned nuclear magnetic resonance test method, by the obtained 31 P NMR results showed that the ratio of phos...

Embodiment 2

[0113] Example 2 Zn(O 3 PH) 0.57 (O 3 PPh) 0.43 preparation of

[0114] Get 15.80 grams (0.10 moles) of phenylphosphonic acid and 12.30 grams (0.15 moles) of phosphorous acid and dissolve in 281 grams of water, adjust to pH=11 with 5% sodium hydroxide aqueous solution, obtain mixed acid solution. Another 34.08 grams (0.25 moles) of zinc chloride was dissolved in 340 grams of water to obtain a zinc chloride solution.

[0115] With stirring at room temperature, the zinc chloride aqueous solution was slowly added dropwise to the mixed acid solution to obtain a white precipitate. The solvent was removed by suction filtration, and the obtained filter cake was washed with ethanol to obtain a white solid. Then place it in a vacuum oven and dry it under vacuum at 120°C to obtain the product Zn(O 3 PH) 0.57 (O 3 PPh) 0.43 .

[0116] on the sample 31P NMR test: part of the gained white solid is dissolved in concentrated hydrochloric acid, and NMR test is carried out according...

Embodiment 3

[0118] Example 3 Zn(O 3 PH) 0.37 (O 3 PPh) 0.63 preparation of

[0119] Get 23.71 grams (mole) of phenylphosphonic acid and 8.20 grams (0.10 mole) of phosphorous acid and dissolve in 310 grams of water, adjust to pH=11 with 5% sodium hydroxide aqueous solution, obtain mixed acid solution. Another 34.08 grams (0.25 moles) of zinc chloride was dissolved in 340 grams of water to obtain a zinc chloride solution.

[0120] With stirring at room temperature, the zinc chloride aqueous solution was slowly added dropwise to the mixed acid solution to obtain a white precipitate. The solvent was removed by suction filtration, and the obtained filter cake was washed with ethanol to obtain a white solid. Then place it in a vacuum oven and dry it under vacuum at 120°C to obtain the product Zn(O 3 PH) 0.37 (O 3 PPh) 0.63 .

[0121] on the sample 31 P NMR test: the solid sample is dissolved in concentrated hydrochloric acid, and the NMR test is carried out according to the aforement...

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Abstract

Disclosed are a flame retardant, a compound flame retardant, and a flame retardant polymer material comprising the compound flame retardant. The flame retardant is a phosphoric acid-arylphosphonic acid metal salt and / or a phosphorous acid-arylphosphonic acid metal salt, the phosphoric acid-arylphosphonic acid metal salt and the phosphorous acid-arylphosphonic acid metal salt both being in a layered single phase. The flame retardant overcomes the respective disadvantages of a phosphate (phosphite) salt and a phenylphosphonate salt in the prior art, especially the issues of the prior art in which the phosphate (phosphite) salt has poor compatibility with a polymer material and easily separates therefrom, and the phenylphosphonate salt flame retardant has a low flame retardant efficiency. The flame retardant can also increase the flame retardant effect of a dialkylphosphinate salt flame retardant on a polymer material. Further provided are a compound flame retardant comprising the flame retardant, and a flame retardant polymer material comprising the compound flame retardant.

Description

technical field [0001] The invention relates to a flame retardant, a composite flame retardant and a flame retardant polymer material containing the composite flame retardant, belonging to the field of flame retardant polymer materials. Background technique [0002] Nowadays, flame-retardant polymer materials have been widely used in the fields of electronics and electrical appliances, such as small electronic components such as electrical sockets, connectors and relays made of flame-retardant polymer materials. The more commonly used flame retardant polymer materials are glass fiber reinforced polyamide, polyester PBT and high temperature nylon. In the prior art, the flame retardancy of polymer materials is often achieved by adding brominated flame retardants to the polymer materials, but when the flame-retardant polymer materials are burned, the brominated flame retardants will decompose to produce strong carcinogenic dioxins British and hydrogen bromide that can cause se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/5317C08K5/5313C08L77/06C08L77/02C08L67/02
CPCC08K5/5313C08K5/5317C08L2201/02C08L77/06C08L77/02C08L67/02
Inventor 姚强曹微虹唐天波赵月英陈俊屈亚平
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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