Halogen-free synergistic composite flame retardant and preparation method thereof

A composite flame retardant and organic solvent technology, which is applied in the fields of chemical materials and light industry, can solve problems such as easy agglomeration, poor dispersion, unfavorable flame retardancy and mechanical properties of high molecular polymers, and achieve high flame retardancy , improved dispersion, good smoke suppression effect

Active Publication Date: 2019-07-09
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the presence of a large number of hydroxyl groups on the surface of hydrotalcite-like materials, which makes it highly hydrophilic, when it comes to flame-retardant polymer materials, due to the ...

Method used

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  • Halogen-free synergistic composite flame retardant and preparation method thereof
  • Halogen-free synergistic composite flame retardant and preparation method thereof
  • Halogen-free synergistic composite flame retardant and preparation method thereof

Examples

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Effect test

Embodiment 1

[0053] A halogen-free synergistic composite flame retardant is composed of hydrotalcite-like modified by anion intercalation and hexachlorocyclotriphosphazene through an in-situ chemical reaction through a silane coupling agent, and has a layered structure.

[0054] Among them, the hydrotalcite-like modified by anion intercalation has Figure 6 indicated chemical structure.

[0055] The preparation method of above-mentioned a kind of halogen-free synergistic composite flame retardant, it comprises the following steps:

[0056] The first step, the preparation of anion-intercalation-modified hydrotalcite-like: the anion-intercalation-modified Hydrotalcite-like;

[0057] The second step, the preparation of the halogen-free synergistic composite flame retardant: filter and wash the anion-intercalated modified hydrotalcite-like obtained in the first step to be neutral, and disperse it with an organic solvent to obtain a dispersion liquid, Then hexachlorocyclotriphosphazene dissol...

Embodiment 2

[0059] A halogen-free synergistic composite flame retardant is composed of hydrotalcite-like modified by anion intercalation and hexachlorocyclotriphosphazene through an in-situ chemical reaction through a silane coupling agent, and has a layered structure.

[0060] Among them, the hydrotalcite-like modified by anion intercalation has Figure 6 indicated chemical structure.

[0061] In this embodiment, the particle size of the hydrotalcite-like modified by anion intercalation is 15 μm.

[0062] The preparation method of above-mentioned a kind of halogen-free synergistic composite flame retardant, it comprises the following steps:

[0063] The first step, the preparation of anion-intercalation-modified hydrotalcite-like: the anion-intercalation-modified Hydrotalcite-like;

[0064] The second step, the preparation of the halogen-free synergistic composite flame retardant: filter and wash the anion-intercalated modified hydrotalcite-like obtained in the first step to be neutral...

Embodiment 3

[0074] A halogen-free synergistic composite flame retardant is composed of hydrotalcite-like modified by anion intercalation and hexachlorocyclotriphosphazene through an in-situ chemical reaction through a silane coupling agent, and has a layered structure.

[0075] Among them, the hydrotalcite-like modified by anion intercalation has Figure 6 indicated chemical structure.

[0076] In this embodiment, the particle size of the hydrotalcite-like modified by anion intercalation is 10 μm.

[0077] The preparation method of above-mentioned a kind of halogen-free synergistic composite flame retardant, it comprises the following steps:

[0078] The first step, the preparation of anion-intercalation-modified hydrotalcite-like: the anion-intercalation-modified Hydrotalcite-like;

[0079] The second step, the preparation of the halogen-free synergistic composite flame retardant: filter and wash the anion-intercalated modified hydrotalcite-like obtained in the first step to be neutral, ...

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Abstract

The invention relates to the technical fields of light industrial and chemical materials, and in particular relates to a halogen-free synergistic composite flame retardant and a preparation method thereof. The halogen-free synergistic composite flame retardant is formed by performing an in-situ compounding chemical reaction on an anion intercalation-modified layered double hydroxide (LDH) and phosphonitrilic chloride trimer through a silane coupling agent, and has a layered structure. The preparation method of the halogen-free synergistic composite flame retardant comprises the following steps: step 1, preparing the anion intercalation-modified layered double hydroxide; and step 2, preparing the halogen-free synergistic composite flame retardant. The halogen-free synergistic composite flame retardant provided by the invention has more excellent flame-retardant and smoke suppressing comprehensive properties compared with the LDH or the phosphonitrilic chloride trimer; the flame retardant has very good compatibility with polymer materials such as epoxy resin in addition to good thermal stability and flame retardancy; the halogen-free synergistic composite flame retardant not only retains a cyclic structure of the phosphonitrilic chloride trimer, but also is used to prepare some polyacid anion intercalation-modified layered double hydroxides by a reconstruction process, and therefore the smoke suppressing effect can be improved while the flame retardant effect is improved.

Description

technical field [0001] The invention relates to the technical field of light industry and chemical materials, in particular to a halogen-free synergistic composite flame retardant and a preparation method thereof. Background technique [0002] With the development of science and technology, polymer materials have been industrialized on a large scale. Due to the wide variety of polymer materials, a wide range of sources, and the ability to meet various functional needs according to requirements, polymer materials are now widely used in construction, transportation, etc. Transportation, agriculture, electrical and electronic industries and other major areas of the national economy and people's daily life. However, polymer materials have poor temperature resistance, and a large amount of toxic and harmful substances will be produced during the combustion process, which will cause huge safety hazards and property losses. Therefore, in order to improve the flame retardancy of po...

Claims

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Application Information

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IPC IPC(8): C08K9/06C08K9/04C08K9/02C08K7/00
CPCC08K7/00C08K9/02C08K9/04C08K9/06
Inventor 郝志峰王兵毅张英明姜奕常任珂陈相温红丽余坚孙明余林
Owner GUANGDONG UNIV OF TECH
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