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

A microcapsule, flame retardant technology, applied in the field of flame retardant materials, can solve the problems of poor compatibility between flame retardants and viscose fibers, poor flame retardant effect and washable effect, and achieve good flame retardant effect and high retention rate High, solve the effect that the flame retardant is easy to fall off

Active Publication Date: 2022-03-25
辽宁顺维碳纤科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problem that flame retardant viscose fibers have poor compatibility between flame retardants and viscose fibers in the prior art, resulting in poor flame retardant and washable effects, the present invention provides a flame retardant microcapsule and its preparation Methods and Applications

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

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Embodiment 1

[0040] The embodiment of the present invention provides a kind of flame-retardant microcapsule, and its wall material is hemicellulose and gelatin that mass ratio is 1.22:1, and core material is dithiophosphate flame retardant (SDPS), and core material and wall material The mass ratio is 1:1.4.

[0041] Among them, hemicellulose is extracted from viscose waste liquid, and its sugar units are: xylose 75-83%, mannose 10-12%, glucose 6-11%, galactose 0.9-1.4%, glucosaldehyde Acid <0.8%.

[0042] The preparation method of above-mentioned flame retardant microcapsules comprises the following steps:

[0043] Step 1. Dissolve 1.54g of hemicellulose and 1.26g of gelatin in 20mL of distilled water, and stir at 80°C for 0.5h to obtain a wall material solution;

[0044] Step 2. Dissolve 2g of phosphorodithioate flame retardant (SDPS) in 20mL of distilled water, add 100mg of Span 80 and 60mg of OP-10, and stir at 70°C for 0.5h to obtain a core material emulsion;

[0045] Step 3: Add th...

Embodiment 2

[0047] The embodiment of the present invention provides a kind of flame-retardant microcapsule, and its wall material is hemicellulose and gelatin that mass ratio is 1.2:1, and core material is dithiophosphate flame retardant (SDPS), and core material and wall material The mass ratio is 1:1.2.

[0048] Among them, hemicellulose is extracted from viscose waste liquid, and its components are: xylose 75-83%, mannose 10-12%, glucose 6-11%, galactose 0.9-1.4%, glucosaldehyde Acid <0.8%.

[0049] The preparation method of above-mentioned flame retardant microcapsules comprises the following steps:

[0050] Step 1. Dissolve 1.43g of hemicellulose and 1.19g of gelatin in 20mL of distilled water, and stir at 80°C for 0.5h to obtain a wall material solution;

[0051] Step 2. Dissolve 2.18g of dithiophosphate flame retardant (SDPS) in 20mL of distilled water, add 98.1mg of Span 80 and 65.4mg of OP-10, and stir at 70°C for 0.5h to obtain a core material emulsion;

[0052]Step 3: Add th...

Embodiment 3

[0054] The embodiment of the present invention provides a kind of flame-retardant microcapsule, and its wall material is hemicellulose and gelatin that mass ratio is 1.3:1, and core material is dithiophosphate flame retardant (SDPS), and core material and wall material The mass ratio is 1:1.6.

[0055] Among them, hemicellulose is extracted from viscose waste liquid, and its components are: xylose 75-83%, mannose 10-12%, glucose 6-11%, galactose 0.9-1.4%, glucosaldehyde Acid <0.8%.

[0056] The preparation method of above-mentioned flame retardant microcapsules comprises the following steps:

[0057] Step 1. Dissolve 1.54g of hemicellulose and 1.18g of gelatin in 20mL of distilled water, and stir at 80°C for 0.5h to obtain a wall material solution;

[0058] Step 2. Dissolve 1.7g of dithiophosphate flame retardant (SDPS) in 20mL of distilled water, add 93.5mg of Span 80 and 54.4mg of OP-10, and stir at 70°C for 0.5h to obtain a core material emulsion;

[0059] Step 3: Add th...

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Abstract

The invention discloses flame-retardant microcapsules, a preparation method and application thereof. The flame-retardant microcapsules include a core material and a wall material, the wall material includes gelatin and hemicellulose, and the core material includes a flame retardant. The flame-retardant microcapsules prepared by the present invention using the above-mentioned wall material and core material as raw materials have an embedding rate of up to 87.6% and a maximum particle size of 0.94m, and are used in the preparation of flame-retardant viscose fibers. After washing, the flame retardant retention rate can reach 98.3%, the limiting oxygen index can reach 34.1%, and the vertical combustion can reach V-0 level, which effectively solves the current problems of poor compatibility between flame retardants and viscose fibers and the recycling of plant resources. , and the preparation method is simple and easy to operate, low in cost, and environmentally friendly. At the same time, the microcapsule wall material is degradable, and has good economic benefits and development prospects.

Description

technical field [0001] The invention relates to the technical field of flame retardant materials, in particular to a flame retardant microcapsule and its preparation method and application. Background technique [0002] Viscose fiber is an important regenerated cellulose fiber, which has excellent wearing properties such as comfortable wearing and natural degradation. With the continuous improvement of people's living standards and industrial application requirements, its functionality and environmental protection have attracted widespread attention from consumers, and the improvement of product performance has become the key to the development of high-quality functional viscose fiber technology. Flame-retardant viscose fiber is an important variety of modified viscose fiber. It not only retains the good clothing performance and dyeing performance of viscose fiber, but also has good flame-retardant performance, which improves the safety of viscose fiber textiles. , has broa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F2/08
CPCD01F2/08
Inventor 张林雅
Owner 辽宁顺维碳纤科技有限公司