Flame retardant microcapsule and application thereof

A microcapsule, flame retardant technology, applied in the directions of microcapsule preparation, microsphere preparation, thin material processing, etc., can solve the problem of high cost, achieve good thermal stability, improve mechanical properties, high flame retardant performance and mechanical strength. Effect

Active Publication Date: 2010-11-17
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the strength, permeability and heat resistance of the capsule wall of the microcapsule still need to be improved, and the main reason is that the cost is high, so how to effectively reduce the preparation cost of the capsule material has become the key to popularize the practical application of microcapsule technology

Method used

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  • Flame retardant microcapsule and application thereof
  • Flame retardant microcapsule and application thereof
  • Flame retardant microcapsule and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1. Flame-retardant microcapsules

[0019] 1. Preparation of microcapsules

[0020] (1) Shorten native microtubules

[0021] Evenly cut 1g of natural kapok fiber to 50-200μm by mechanical external force;

[0022] (2) Flame retardant liquid filled natural microtubules

[0023] Disperse the natural kapok fiber microtubes cut short in step (1) in the flame retardant RDT liquid (Zhejiang Wansheng Chemical Co., Ltd., product brand: WSFR), and soak for 0.5 hour to make the microtubes absorb the flame retardant liquid to balance , so that the cut natural microtubules are filled with a flame retardant to obtain the flame retardant microtubules 1;

[0024] (3) Encapsulation of flame-retardant microtube 1

[0025] Add 2g of urea-formaldehyde prepolymer dropwise to the solution of the above-mentioned flame-retardant microtube 1 (urea-formaldehyde prepolymer is obtained by adding 1g of urea to 2ml of formaldehyde solution with a volume fraction of 36% and stirring unt...

Embodiment 2

[0030] Embodiment 2. Flame-retardant microcapsules

[0031] 1. Preparation of microcapsules

[0032] (1) Shorten native microtubules

[0033] Evenly cut 1g of natural kapok fiber to 200μm-2mm with mechanical external force;

[0034] (2) Flame retardant liquid filled natural microtubules

[0035] The natural kapok fiber microtubes cut short in step (1) are dispersed in the ethanol solution of red phosphorus of 90% (mass percentage composition), soaked for 0.5 hour to make the capillary absorption of the microtubes to the ethanol solution of red phosphorus reach equilibrium, The cut natural microtubules are filled with ethanol solution of red phosphorus to obtain flame retardant microtubules 2;

[0036] (3) Encapsulation of flame-retardant microtube 2

[0037] The ethanol in the flame-retardant microtube 2 was volatilized, then immersed in 5 mL of cellulose acetate dichloromethane solution with a concentration of 5% (mass percentage content), reacted for 1 minute, and the mi...

Embodiment 3

[0042] Embodiment 3. Flame-retardant microcapsules

[0043] 1. Preparation of microcapsules

[0044] (1) Shorten native microtubules

[0045] Evenly cut 1g of natural milkweed fiber to 2-10mm by mechanical external force;

[0046] (2) Flame retardant liquid filled natural microtubules

[0047] The natural milkweed fiber microtubules cut short in step (1) were dispersed in the methanol solution of melamine in 80% (mass percentage composition), soaked for 0.5 hour so that the capillary absorption of the microtubes to the methanol solution of melamine reached equilibrium, so that The chopped natural microtubules are filled with a methanol solution of melamine to obtain flame-retardant microtubules 3;

[0048] (3) Encapsulation of flame retardant microtube 3

[0049] The methanol in the flame-retardant microtube 3 was volatilized, and then immersed in 5 mL of polyacrylonitrile N, N'-dimethylformamide solution with a concentration of 5% (mass percentage content), reacted for 10...

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Abstract

The invention discloses a flame retardant microcapsule and application thereof. The flame retardant microcapsule consists of a core and a shell coating the core, wherein the core is a flame retardant and the shell is made of natural fibers; and the shell also coats artificially synthesized high polymer or natural cellulose. The flame retardant microcapsule is compounded into a specific high polymer base material by a blending method so as to prepare a corresponding high polymer composite material with flame retardancy.

Description

Technical field [0001] The present invention relates to flame retardant microcapsules and their applications. Background technique [0002] Flame retardant science and technology is a science developed to meet the needs of social safety production and life, prevent fires, and protect people's lives and property. Flame retardant, also known as flame retardant, fire retardant or fire retardant is the application of flame retardant technology in real life. It is a special chemical additive used to improve the burning performance of flammable and combustible materials. It is widely used in various types of The flame retardant processing of decoration materials is in progress. Flame retardants are used in various fields such as chemical building materials, electronic appliances, transportation, aerospace, daily furniture, interior decoration, food, clothing, housing and transportation to protect plastic products, textiles, rubber, paper products, adhesives, wood, etc. Catch fir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/10
CPCC08L101/00B01J13/04C08K9/10C08K7/02C09K21/00B01J13/02Y10T428/2935
Inventor 张晓艳徐坚赵宁张小莉
Owner INST OF CHEM CHINESE ACAD OF SCI
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