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A kind of multi-gradient functionalized microcapsule titanium phosphate flame retardant and preparation method thereof

A technology of titanium phosphate and microcapsules, which is applied in the field of flame retardant modification, can solve the problems of catalytic char formation, non-catalysis, and complicated preparation process, and achieve enhanced mechanical strength, high char formation, and high thermal stability. sexual effect

Inactive Publication Date: 2018-05-25
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, magnesium hydroxide itself is not catalytic, and its catalytic char formation is affected to a certain extent, and the preparation process is also relatively complicated.

Method used

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  • A kind of multi-gradient functionalized microcapsule titanium phosphate flame retardant and preparation method thereof
  • A kind of multi-gradient functionalized microcapsule titanium phosphate flame retardant and preparation method thereof
  • A kind of multi-gradient functionalized microcapsule titanium phosphate flame retardant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Preparation of titanium phosphate:

[0037] Mix 10 g of titanium tetrachloride with 100 ml of distilled water evenly, add 100 ml of 9M phosphoric acid while mechanically stirring, and transfer the mixed solution into a stainless steel reaction kettle with a polytetrafluoroethylene liner. After reacting under high pressure for 72 hours, cool to room temperature, wash with deionized water repeatedly until the pH of the solution is neutral, and then vacuum dry at 80°C to obtain titanium phosphate powder;

[0038] (2) Intumescent flame retardant coated inner wall:

[0039] Weigh 10 g of titanium phosphate powder obtained in step (1), disperse it in 100 ml of tetrahydrofuran, stir it mechanically and raise the temperature to 100 °C, weigh a certain amount of pentaerythritol as a carbon source modifier, and add it to the above solution After raising the temperature to 150 °C and mechanically stirring for 2 h, add a certain amount of ammonium phosphate as the acid source ...

Embodiment 2

[0043] (1) Preparation of titanium phosphate:

[0044] Mix 10 g of titanium tetrachloride with 100 ml of distilled water evenly, add 100 ml of 9M phosphoric acid while mechanically stirring, and transfer the mixed solution into a stainless steel reaction kettle with a polytetrafluoroethylene liner. After reacting under high pressure for 72 hours, cool to room temperature, wash with deionized water repeatedly until the pH of the solution is neutral, and then vacuum dry at 80°C to obtain titanium phosphate powder;

[0045] (2) Intumescent flame retardant coated inner wall:

[0046] Weigh 10 g of titanium phosphate powder obtained in step (1), disperse it in 100 ml of tetrahydrofuran, stir it mechanically and raise the temperature to 100 °C, weigh a certain amount of pentaerythritol as a carbon source modifier, and add it to the above solution After raising the temperature to 150 °C and mechanically stirring for 2 h, add a certain amount of ammonium phosphate as the acid source ...

Embodiment 3

[0052] (1) Preparation of titanium phosphate:

[0053] Mix 10 g of titanium tetrachloride with 100 ml of distilled water evenly, add 100 ml of 9M phosphoric acid while mechanically stirring, and transfer the mixed solution into a stainless steel reaction kettle with a polytetrafluoroethylene liner. After reacting under high pressure for 72 hours, cool to room temperature, wash with deionized water repeatedly until the pH of the solution is neutral, and then vacuum dry at 80°C to obtain titanium phosphate powder;

[0054] (2) Intumescent flame retardant coated inner wall:

[0055] Weigh 10 g of titanium phosphate powder obtained in step (1), disperse it in 100 ml of tetrahydrofuran, stir it mechanically and raise the temperature to 100 °C, weigh a certain amount of pentaerythritol as a carbon source modifier, and add it to the above solution After raising the temperature to 150 °C and mechanically stirring for 2 h, add a certain amount of ammonium phosphate as the acid source ...

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Abstract

The invention discloses a multi-gradient functionalized microcapsule titanium phosphate flame retardant and a preparation method thereof. The multi-gradient functionalized microcapsule titanium phosphate flame retardant comprises a core material and a wall material for wrapping the core material, wherein the core material is titanium phosphate; the wall material is double-layered, the inner wall is an intumescent flame retardant prepared from a carbon source modifier, an acid source modifier and a gas source modifier in a mole ratio being (1-2):(1-2):(1-2) through reaction, and the outer wall is an organosilicon cross-linked polymer. The preparation method of the flame retardant comprises the following steps: titanium phosphate powder is prepared firstly; then the titanium phosphate powder is dispersed in a solvent, and the carbon source modifier, the acid source modifier and the gas source modifier are added for the reaction for inner wall wrapping; the outer wall is wrapped with the organosilicon cross-linked polymer finally, and the flame retardant is obtained. According to the flame retardant, the organosilicon cross-linked polymer with high carbon formation amount, water resistance, molten droplet avoidance and heat resistance is taken as the outer wall, the intumescent flame retardant is taken as the inner wall, the titanium phosphate powder with carbon formation catalysis characteristic is taken as the core material, so that the prepared microcapsule titanium phosphate flame retardant has more efficient flame retardance and can show a multi-functional multi-gradient flame retardant effect in a burning process.

Description

technical field [0001] The invention belongs to the field of flame retardant modification, and in particular relates to a multi-gradient functionalized microcapsule titanium phosphate flame retardant and a preparation method thereof. Background technique [0002] Titanium phosphate is a layered inorganic powder that has emerged in recent years. It not only has the commonality of layered compounds such as montmorillonite and layered double hydroxide, but also has characteristics that other layered compounds do not have: (1 ) is easy to prepare, and has a relatively good crystal form; (2) is insoluble in water and organic solvents, has high chemical stability, good thermal stability and mechanical strength; (3) has a relatively large charge density on the surface, and is a strong solid acid ; (4) The hydroxyl groups on the surface of the layer can be substituted by other functional groups, so the hydrophilicity and hydrophobicity of the surface can be adjusted; (5) The aspect ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/10C08K3/32C08L55/02B01J13/02B01J13/22B01J13/14
CPCB01J13/02B01J13/14B01J13/22C08K3/32C08K9/10C08K2003/328C08L2201/02C08L55/02
Inventor 雷彩红徐灵峰徐睿杰张丰
Owner GUANGDONG UNIV OF TECH
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