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A kind of cerium-phosphorus complex flame retardant, cerium-phosphorus complex flame retardant polycarbonate composite material and their preparation method

A technology of flame-retardant polycarbonate and composite materials, applied in chemical instruments and methods, compounds of group 5/15 elements of the periodic table, organic chemistry, etc., can solve the problem of discounting the practical performance and application fields of polymer materials, and destroying polymerization The physical and mechanical properties of the material, increasing the workload of compound selection and addition, etc., to achieve the effect of inhibiting the formation of molten droplets and the overflow of toxic fumes, the preparation and processing methods are simple and easy, and the effect of avoiding secondary fires and secondary injuries

Active Publication Date: 2021-05-07
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flame retardants in the prior art generally achieve the flame retardant effect through one of the mechanisms. If you want to achieve the flame retardant effect through multiple flame retardant mechanisms, you need to add a variety of flame retardants in combination, which increases the amount of flame retardants used. , due to the large difference in physical and chemical properties between flame retardants and polymer materials, the use of a large amount of flame retardants will easily cause the performance of polymer materials to decline, and also increase the workload of compound selection and addition
The existing flame retardants often have the problems of poor dispersion and agglomeration in the polymer system. The agglomeration of the flame retardants in the polymer will cause stress concentration and destroy the physical and mechanical properties of the polymer material, making the polymer material practical. Performance and application areas are greatly reduced
Existing flame retardants also have the problem of premature decomposition, resulting in a decrease in the thermal stability of composite materials

Method used

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  • A kind of cerium-phosphorus complex flame retardant, cerium-phosphorus complex flame retardant polycarbonate composite material and their preparation method
  • A kind of cerium-phosphorus complex flame retardant, cerium-phosphorus complex flame retardant polycarbonate composite material and their preparation method
  • A kind of cerium-phosphorus complex flame retardant, cerium-phosphorus complex flame retardant polycarbonate composite material and their preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056]The preparation method of the cerium-phosphorus compound flame retardant in this embodiment includes the following steps:

[0057](1) Weigh 0.025 mol of DOPO in 200 ml of DMF, stirred at room temperature for 60 min to give a solution A; weigh 0.050 mol of nitrate hydrate in 200 ml of deionized water, stirred at room temperature for 15 min, obtained solution B, used Nitrate hydrate, the purity of DOPO is ≥97%, and the purity of DMF is ≥99%, and the deionized water is ultrapure water in electrical conductivity ≥18mΩ;

[0058](2) The solution B was added dropwise to the stirred solution A, and the mixture was continued at normal temperature for 25 min to prepare a mixed solution;

[0059](3) The mixed solution was transferred to a hydrothermal reaction kettle having a polytetrafluoroethylene liner, and then the reaction kettle was carried out in a blower oven for hydrothermal reaction, and the reaction temperature was 120 ° C, the reaction time was 24 h;

[0060](4) After the product was nat...

Embodiment 2

[0062]The difference from Embodiments is only that 0.025 mol of nitrate hydrate is integrated into 200 ml of deionized water, i.e., DOPO and nitrate hydrate, i.e., 1: 1.

Embodiment 3

[0064]The difference from Example 1 is only in that, in Example 3, 0.075 mol of nitrate hydrate was weighed in 200 ml of deionized water, i.e., DOPO and nitrate hydrate of the hydrate of 1: 3.

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Abstract

The invention relates to a cerium-phosphorus complex flame retardant, a cerium-phosphorus complex flame-retardant polycarbonate composite material and a preparation method thereof, belonging to the technical field of polymer materials. The cerium-phosphorus complex flame retardant of the present invention comprises cerium nitrate hydrate and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO); the preparation method comprises: dissolving DOPO in In DMF, solution A is prepared, cerium nitrate hydrate is dissolved in deionized water to prepare solution B; solution B is added to solution A, and then hydrothermal reaction and dehydration treatment are performed. The cerium-phosphorus complex flame-retardant polycarbonate composite material of the present invention comprises 1-20wt% cerium-phosphorus complex and 80-99wt% polycarbonate; the preparation method comprises: separately cerium-phosphorus complex and polycarbonate Dry, premix and then melt blend. The flame retardant of the cerium-phosphorus complex of the invention has good dispersibility, can realize the flame retardant effect by utilizing the condensed phase mechanism and the gas phase mechanism at the same time, has a simple preparation method for the composite material, and has good flame retardant performance.

Description

Technical field[0001]The present invention belongs to the technical field of polymer materials, and more particularly to a cerium-phosphorus compound flame retardant, a cerium-phosphorus compound flame retardant polycarbonate composite material and the preparation method of the two.Background technique[0002]Bisphenol A-type polycarbonate (PC) is the most widely used commodity engineering plastic in a carbonate polymer, high transparency, better thermal stability, excellent mechanical properties, dimensional stability, and fatigue resistance. , Weather resistance and electrical characteristics. The PC itself has a certain flame retardant ability, and once it encounters high temperature or open fire in processing, molding, transportation, use, etc., it will thermally oxidize degradation or violent burning, and will release the use of rich poisonous fumes, destroy the use of materials. Performance and appearance, the fire caused by this type of article also causes a lot of casualties, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/00C08L69/00C07F9/6574
CPCC07F9/657163C08K5/0091C08L2201/02C08L2201/08C08L69/00
Inventor 冉诗雅赛霆郭正虹方征平
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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