Method for modifying palygorskite surface by phosphoric acid and fatty amine

A technology of palygorskite and fatty amine, which is applied in the field of palygorskite surface modification by phosphoric acid and fatty amine, and the surface modification of palygorskite, which can solve the problems of insufficient mechanical properties and other problems

Active Publication Date: 2020-07-14
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method utilizes the adsorption properties of palygorskite to boric acid, and the mechanical properties are not excellent enough.

Method used

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  • Method for modifying palygorskite surface by phosphoric acid and fatty amine
  • Method for modifying palygorskite surface by phosphoric acid and fatty amine
  • Method for modifying palygorskite surface by phosphoric acid and fatty amine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Disperse 3 g of phosphoric acid in 150 mL of absolute ethanol at 70 o Stir at C for 5 min; add 30 g of palygorskite, stir for 2 h; add 3 g of dodecylamine, stir for 3 h; then filter and centrifuge while it is hot, wash with hot ethanol for several times, and finally vacuum-dry in an oven at 60 ° C to obtain the modified slope Gordolith.

Embodiment 2

[0028] Disperse 3 g of phosphoric acid in 150 mL of absolute ethanol at 70 o Stir at C for 8 min; add 30 g of palygorskite, stir for 3 h; add 3 g of dodecylamine, stir for 4 h, then filter and centrifuge while hot, wash with hot ethanol for several times, and finally vacuum-dry in an oven at 60 ° C to obtain the modified slope Gordolith.

Embodiment 3

[0030] Disperse 6g of phosphoric acid in 150mL of absolute ethanol, stir at 70°C for 5min; add 30g of palygorskite, stir for 2h; add 3g of dodecylamine, stir for 3h, then filter and centrifuge while hot, wash with hot ethanol several times, and finally The modified palygorskite is obtained by vacuum drying in an oven at 60°C.

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Abstract

The invention discloses a surface modification method for a palygorskite flame retardant, wherein the method comprises the steps: adding palygorskite original soil into an ethanol solution of phosphoric acid, and carrying out a stirring reaction for 1-6 h; then adding fatty amine, and continuing to carry out stirring reaction for 1-5 h; then filtering and centrifuging while being hot, washing withhot ethanol, drying in vacuum, and thus obtaining the modified palygorskite flame retardant. The electrical properties of palygorskite are used for ion exchange modification, that is to say, a flameretardant element P is introduced, and at the same time, the hydrophobic property and the dispersity and solubility in a matrix material are improved. The palygorskite flame retardant can effectivelyimprove the dispersity and flame retardancy of the organic matrix material when being applied in the organic matrix material.

Description

technical field [0001] The invention relates to a method for modifying the surface of palygorskite, in particular to a method for modifying the surface of palygorskite by using phosphoric acid and fatty amine, and belongs to the technical field of material processing. Background technique [0002] The fields of application of polymers are constantly expanding and their mechanical, thermal and electrical properties need to be improved to withstand increasingly stringent conditions. It is equally important to reduce their tendency to ignite or burn efficiently. Traditionally, halogen-containing flame retardants are added to improve the flame retardancy of polymers. However, during combustion, halogenated flame retardants release toxic dioxins and furans, which pose a threat to human health and environmental pollution. Therefore, there is an urgent need for us to research and explore new technologies for efficient green flame retardant. [0003] At present, polymer nanocompo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/10C08K9/02C08K9/04C08K3/34C08K7/24C08L23/08
CPCC08K3/34C08K7/24C08K9/02C08K9/04C08K9/10C08L2201/02C08L23/0853
Inventor 杨志旺李丽魏红杨娇梁习习张哲杨尧霞雷自强
Owner NORTHWEST NORMAL UNIVERSITY
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