Hyperbranched expanded type flame retardant and preparation method thereof

An intumescent flame retardant and flame retardant technology, which is applied in chemical instruments and methods, organic chemistry, compounds of Group 5/15 elements of the periodic table, etc., can solve the problem that the compatibility between flame retardants and substrates is not very good. , The flame retardant effect is not greatly improved, the synthesis steps of the flame retardant are cumbersome and other problems, to achieve the effects of high yield, reduced hygroscopicity, and short reaction time
CN107129595AActive Publication Date: 2017-09-05ZHEJIANG UNIV OF TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZHEJIANG UNIV OF TECH
Publication Date
2017-09-05

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Abstract

The invention discloses a hyperbranched expanded type flame retardant and a preparation method thereof. The method comprises the following steps: taking one or a mixture of any two of 1-oxo-4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2,2,2]-octane, trimethylsilanol and sodium lignosulphonate as a first monomer and taking cyanuric tricholoride as a second monomer; enabling the first monomer and the second monomer to react for 2.5h to 5.5h in an organic solvent at 30 DEG C to 50 DEG C in the presence of an acid binding agent A, so as to generate a di-substituted product; adding a third monomer polylol into the di-substituted product and reacting for 3h to 6h at 70 DEG C to 95 DEG C for in the presence of an acid binding agent B, so as to obtain the hyperbranched expanded type flame retardant. The adding amount of the hyperbranched flame retardant disclosed by the invention in a matrix is low and the branching degree of the flame retardant is increased so that the flame retardant is difficult to crystallize and has no chain entanglement; the dispersity of the flame retardant in the matrix and the compatibility of the flame retardant and the matrix are improved and the moisture absorption of the flame retardant is reduced; the water resistance and migration resistance of the flame retardant are improved.
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Description

[0001] (1) Technical field

[0002] The invention relates to the field of three-source integrated intumescent flame retardants, in particular to a hyperbranched intumescent flame retardant and its preparation method and application.

[0003] (2) Background technology

[0004] With the continuous development of science and technology, human life has become increasingly inseparable from polymer materials. However, polymer materials often encounter many problems during use, such as heat aging, light aging, combustion, static electricity, etc. Among them, the flammability of polymer materials is the biggest problem they face during use, so usually To add a flame retardant to the polymer to improve its flame retardant performance. At present, the most used in the world is still the halogen flame retardant, but the halogen flame retardant will generate a lot of smoke and toxic and corrosive gas when burning, which will cause great harm to the environment and the human body, so it is...

Claims

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