A kind of flame retardant based on modified α-zirconium phosphate and its preparation method

A zirconium phosphate modification technology, which is applied in fibrous fillers, coatings, dyed low-molecular organic compounds, etc., can solve the problems of low loose strength of the charcoal layer, poor charcoal quality, low flame retardant efficiency, etc., to achieve Easy intercalation and peeling, adjustable layer spacing, excellent flame retardant effect

Active Publication Date: 2021-02-12
WUHAN INSTITUTE OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The main purpose of the present invention is to provide a flame retardant based on modified α-zirconium phosphate to solve the problems of poor charring quality, low loose strength of charcoal layer and low flame retardant efficiency of existing flame retardants. The agent integrates flame retardant, smoke suppression and enhanced functions, is halogen-free, has good char formation, excellent flame retardant performance, and is environmentally friendly, and the preparation method involved is simple and suitable for popularization and application.

Method used

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  • A kind of flame retardant based on modified α-zirconium phosphate and its preparation method

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Embodiment 1

[0036] A novel nano-flame retardant based on modified α-zirconium phosphate, the preparation method of which comprises the following steps:

[0037]1) Preparation of α-zirconium phosphate sheets: disperse 2.83g of α-zirconium phosphate in water by ultrasonic, stir well to make zirconium phosphate suspension, add 100ml of 0.2mol / L methylamine aqueous solution amine that has been prepared; 7.28g Cetyltrimethylammonium bromide (CTAB) was dissolved in 100ml water to prepare surfactant solution, and it was added dropwise in the mixed solution of zirconium phosphate and methylamine (controlling zirconium phosphate and cetyltrimethyl The molar ratio of ammonium bromide is 1:1), after the complete dropwise addition, the mixture was ultrasonicated at 75°C for 4h, then left at room temperature for 3h, filtered with suction, and rinsed with water until there was no bromide ion. The obtained organically modified zirconium phosphate was added to the organic medium, ultrasonicated for 60 mi...

Embodiment 2

[0041] A novel nano-flame retardant based on modified α-zirconium phosphate, the preparation method of which comprises the following steps:

[0042] 1) Preparation of α-zirconium phosphate sheets: disperse 2.83g of α-zirconium phosphate in water by ultrasonic, stir well to make zirconium phosphate suspension, add 100ml of 0.2mol / L methylamine aqueous solution amine that has been prepared; 7.28g Cetyltrimethylammonium bromide (CTAB) was dissolved in water to prepare a surfactant solution, and it was added dropwise to the mixed solution of zirconium phosphate and methylamine (control zirconium phosphate and cetyltrimethylbromide The molar ratio of ammonium chloride is 2:3), after the complete dropwise addition, the mixture was ultrasonicated at 80°C for 5h, then left at room temperature for 5h, suction filtered, and washed with water until there was no bromide ion. The obtained organically modified zirconium phosphate was added to the organic medium, ultrasonicated for 60 minute...

Embodiment 3

[0046] A novel nano-flame retardant based on modified α-zirconium phosphate, the preparation method of which comprises the following steps:

[0047] 1) Preparation of α-zirconium phosphate sheets: disperse 5.66g of α-zirconium phosphate in water by ultrasonic waves, stir well to make a zirconium phosphate suspension, add 100ml of 0.2mol / L methylamine aqueous solution that has been prepared; 11.32g Cetyltrimethylammonium bromide (CTAB) was dissolved in 100ml water to prepare surfactant solution, and it was added dropwise in the mixed solution of zirconium phosphate and methylamine (controlling zirconium phosphate and cetyltrimethyl The molar ratio of ammonium bromide is 4:3), after the complete dropwise addition, the mixture was subjected to ultrasound at 80°C for 5h, then placed at room temperature for 4h, suction filtered, and washed with water until no bromide ions were obtained; Add active zirconium phosphate into isopropanol, ultrasonicate for 60min, ball mill in a ball mi...

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Abstract

The invention discloses a flame retardant based on modified α-zirconium phosphate. Firstly, methylamine and surfactant are used to organically modify α-zirconium phosphate to reduce the surface polarity of α-zirconium phosphate nanosheets, and through It is obtained by exfoliating α-zirconium phosphate into sheets by ball milling machine, and then grafting and modifying α-zirconium phosphate sheets with silane coupling agent KH560. The present invention utilizes silane coupling agent KH560 to improve the compatibility of α-zirconium phosphate and the matrix, and adopts 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) as graft The monomer of α-zirconium phosphate, the resulting new nano-flame retardant integrates flame retardant, smoke suppression and enhancement functions, and is halogen-free, has good char formation, excellent flame retardant performance, environmental friendliness, and wide applicability.

Description

technical field [0001] The invention belongs to the technical field of novel flame-retardant and smoke-suppressing additives, and relates to a novel nano-flame-retardant and smoke-suppressing additive of organic and inorganic hybridization, and specifically relates to a novel nano-flame retardant based on modified α-zirconium phosphate and its Preparation. Background technique [0002] In recent years, polymer layered nanocomposites have become one of the most widely studied materials in the field of nanocomposites. The special structure of nanomaterials determines that they have special properties that other materials do not have (such as small size effect, macroscopic tunnel effect, etc.) etc.), and at the same time, it can provide a good method to improve the thermal stability, fire resistance and mechanical properties of polymeric materials. [0003] α-zirconium phosphate is a new multifunctional material with a layered structure, certain acid and alkali resistance, exc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/00C09C3/08C09C3/12C09D5/18C09D133/04
Inventor 刘治田王成胡清华刘诗张旗
Owner WUHAN INSTITUTE OF TECHNOLOGY
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