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A kind of microcapsule intumescent flame retardant and its preparation method and application

An intumescent flame retardant and microcapsule technology, applied in the field of flame retardants, can solve the problems of post-processing of polymers and other unfavorable properties, the influence of processing temperature and processing temperature, reaching 15% or even higher, and achieving good flame retardant synergy , uniform distribution and short ignition time

Active Publication Date: 2022-03-01
BEIJING INST OF CLOTHING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, multi-component synergistic flame retardants have the defects that the synergistic elements are not concentrated, and the processing temperature is affected by the minimum processing temperature of the components, which in turn affects the flame retardant efficiency of the flame retardant.
And when applied to polymers, the amount of multi-component flame retardants such as intumescent flame retardants is large, generally reaching 15% or even higher, which is not good for the post-processing and other properties of polymers

Method used

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  • A kind of microcapsule intumescent flame retardant and its preparation method and application
  • A kind of microcapsule intumescent flame retardant and its preparation method and application
  • A kind of microcapsule intumescent flame retardant and its preparation method and application

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preparation example Construction

[0019] According to the present invention, the preparation method of the microcapsule intumescent flame retardant comprises: using an acid source and a carbon source to prepare a core material, and then coating the core material with a capsule material prepared from a gas source to obtain the microcapsule intumescent flame retardant flame retardant.

[0020] In the present invention, the microcapsule intumescent flame retardant is embodied by the expansion agent flame retardant in the form of microcapsules. The advantages of good combustion effect.

[0021] According to a preferred embodiment of the present invention, the core material is prepared by mixing the acid source and the carbon source, wherein the mass ratio of the acid source to the carbon source is (2-8):1, preferably (3-6):1.

[0022] According to a preferred embodiment of the present invention, the acid source is selected from melamine polyphosphate, 9,10-dihydro-9-oxa-10-phosphonophenanthrene-succinic acid (DDP...

Embodiment 1

[0069] Mix 60ml of acetone and 30ml of water to prepare a solvent, add 10g of DDP to the solvent, stir at 65°C to obtain a solution containing DDP; disperse 2g of MCC in deionized water to obtain a solution containing MCC;

[0070] After the DDP is dissolved, add the MCC-containing solution dropwise to the DDP-containing solution, and the dropwise addition is completed within 10 minutes to obtain a mixed solution, and the mixed solution is stirred for 2 hours; after the stirring is completed, the mixed solution is cooled to 20 °C, place the mixed solution in a water bath at 20 °C and continue to stir for 10 h; after the stirring is completed, carry out centrifugal drying to the mixed solution to obtain a core material;

[0071] Add 0.99g of melamine into 10ml of deionized water, and ultrasonically disperse to obtain a melamine dispersion;

[0072] Take 8g of core material and add it to deionized water, ultrasonically disperse it, then raise the temperature to 90°C, add 1.01g o...

Embodiment 2

[0074] Repeat the preparation process of Example 1, the only difference is that the content of melamine is 2.97g, and that of cyanuric acid is 3.03g. Other processes are the same as in Example 1 to obtain a microcapsule intumescent flame retardant.

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Abstract

The invention discloses a microcapsule expansion flame retardant and its preparation method and application. The flame retardant is prepared from a core material and a capsule material coated on the core material. The core material is prepared from an acid source and a carbon source Obtained, the capsule material is prepared from a gas source, the flame retardant has a microcapsule structure and multi-component synergistic flame retardant, the flame retardant efficiency is higher, and the flame retardant effect is better, and the obtained flame retardant can be blended with polylactic acid The flame-retardant polylactic acid is prepared, and the obtained flame-retardant polylactic acid has excellent flame-retardant performance.

Description

technical field [0001] The invention relates to the technical field of flame retardants, in particular to a microcapsule expansion flame retardant and its preparation method and application. Background technique [0002] Flame retardants can impart flame retardant properties to flammable polymers, and have a wide range of applications in the flame retardant and fireproof properties of polymers. At present, commonly used flame retardants include single-component nitrogen-based and phosphorus-based flame retardants, multi-component nitrogen-phosphorus synergistic flame retardants, phosphorus-silicon synergistic flame retardants, and intumescent flame retardants. [0003] Compared with single-component flame retardants, multi-component flame retardants and synergistic flame retardants can improve the flame retardant performance in various ways. However, multi-component synergistic flame retardants have the defects that the synergistic elements are not concentrated, and the pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L1/04C08K9/10C08K3/32C08L67/04B01J13/02
CPCC08L1/04C08K9/10C08K3/32C08L67/04B01J13/025C08L2201/02C08L2205/18C08K2003/323
Inventor 朱志国文玉峰王锐董振峰马晓谱盛方圆
Owner BEIJING INST OF CLOTHING TECH
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