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Novel red phosphorus microcapsule and preparation method thereof

A red phosphorus microcapsule, a new type of technology, applied in the field of flame retardant materials, can solve problems such as low moisture absorption rate, and achieve the effects of low moisture absorption rate, strong alkalinity and stable properties

Pending Publication Date: 2020-10-09
HENGYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Existing phosphorus-based flame retardants have problems such as flame retardant efficiency, moisture absorption rate, and storage performance. Therefore, how to provide a stable, low moisture absorption, safe and efficient phosphorus-based flame retardant is an urgent task for those skilled in the art. technical issues to be resolved

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  • Novel red phosphorus microcapsule and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation method of novel red phosphorus microcapsules:

[0028] (1) Boil deionized water to remove carbon dioxide, weigh 10g of red phosphorus, 15.36g of magnesium nitrate, 7.5g of aluminum nitrate, 0.1g of sodium lauryl sulfate, and 6.4g of sodium hydroxide;

[0029] (2) Put the red phosphorus into a planetary ball mill for ball milling, then add it to deionized water and ultrasonically vibrate for 30 minutes at a frequency of 40 Hz to obtain a stable red phosphorus suspension, which is ready for use;

[0030] (3) nitrate and strong alkali are dissolved in deionized water respectively to obtain 10% nitrate solution and 10% alkali solution;

[0031] (4) adding the nitrate solution and the alkali solution to the reaction vessel, stirring, and keeping the pH stable at 10-11, then adding the red phosphorus suspension and the surfactant to the reaction vessel, stirring for 2 hours to obtain a mixed solution;

[0032] (5) After crystallization and precipitation of th...

Embodiment 2

[0034] The preparation method of novel red phosphorus microcapsules:

[0035] (1) Boil deionized water to remove carbon dioxide, weigh 10g of red phosphorus, 15.36g of magnesium nitrate, 4.84g of iron nitrate, 0.1g of sodium lauryl sulfate, and 6.4g of sodium hydroxide;

[0036] (2) Put the red phosphorus into a planetary ball mill for ball milling, then add it to deionized water and ultrasonically vibrate for 30 minutes at a frequency of 40 Hz to obtain a stable red phosphorus suspension, which is ready for use;

[0037] (3) nitrate and strong alkali are dissolved in deionized water respectively to obtain 10% nitrate solution and 10% alkali solution;

[0038] (4) adding the nitrate solution and the alkali solution to the reaction vessel, stirring, and keeping the pH stable at 10-11, then adding the red phosphorus suspension and the surfactant to the reaction vessel, stirring for 2 hours to obtain a mixed solution;

[0039] (5) After crystallization and precipitation of the m...

Embodiment 3

[0041] The preparation method of novel red phosphorus microcapsules:

[0042] (1) Boil deionized water to remove carbon dioxide, weigh 10g of red phosphorus, 15.36g of magnesium nitrate, 3.65g of nickel nitrate, 0.1g of sodium lauryl sulfate, and 6.4g of sodium hydroxide;

[0043] (2) Put the red phosphorus into a planetary ball mill for ball milling, then add it to deionized water and ultrasonically vibrate for 30 minutes at a frequency of 40 Hz to obtain a stable red phosphorus suspension, which is ready for use;

[0044] (3) nitrate and strong alkali are dissolved in deionized water respectively to obtain 10% nitrate solution and 10% alkali solution;

[0045] (4) adding the nitrate solution and the alkali solution to the reaction vessel, stirring, and keeping the pH stable at 10-11, then adding the red phosphorus suspension and the surfactant to the reaction vessel, stirring for 2 hours to obtain a mixed solution;

[0046] (5) After crystallization and precipitation of the...

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Abstract

The invention discloses a novel red phosphorus microcapsule which is prepared from the following raw materials in parts by weight: 5 to 80g of red phosphorus, 1 to 60 parts of nitrate, 5 to 80 parts of strong base and 0.01 to 10 parts of surfactant. The preparation method comprises the following steps: carrying out ball milling on red phosphorus and carrying out ultrasonic oscillation to obtain astable red phosphorus suspension, and respectively dissolving nitrate and strong base in deionized water to obtain a nitrate solution and an alkali solution; and mixing, stirring, crystallizing, precipitating, filtering, washing and drying the raw materials to obtain the red phosphorus microcapsule. The red phosphorus microcapsule is used as a flame-retardant additive of a high polymer material and has the properties of low moisture absorption rate, high flame-retardant efficiency and the like, and does not influence the chromaticity and mechanical properties of the material.

Description

technical field [0001] The invention relates to the technical field of flame retardant materials, in particular to a novel red phosphorus microcapsule and a preparation method thereof. Background technique [0002] With the development of society and the improvement of industrial level, all walks of life pay more attention to the combustion safety of building materials and products, and there are endless flame retardants on the market. At present, products involving different elements and forms such as flame retardants have different effects. [0003] Existing phosphorus-based flame retardants have problems such as flame retardant efficiency, moisture absorption rate, and storage performance. Therefore, how to provide a stable, low moisture absorption, safe and efficient phosphorus-based flame retardant is an urgent task for those skilled in the art. technical issues to be resolved. Contents of the invention [0004] In view of this, the present invention provides a stab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/10C08K3/02B01J13/02
CPCB01J13/02C08K3/02C08K9/10C08K2003/026
Inventor 黄耿苏胜培李薇赖华李玉林彭钢萧丽芬
Owner HENGYANG NORMAL UNIV
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