Preparation method of organic silicon-phosphorus synergistic flame retardant
A synergistic flame retardant and silicone technology, applied in the field of flame retardants, can solve problems such as inability to effectively exert the flame retardant effect, excessive addition of flame retardants, poor compatibility between flame retardants and substrates, and achieve The effect of improving synthesis efficiency, improving affinity, and enhancing flame retardant effect
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[0030] Example 1
[0031] A preparation method of organosilicon phosphorus synergistic flame retardant, the preparation method includes the following steps:
[0032] (1) Preparation of polyhydrogen silsesquioxane: hydrolyze trichlorosilane in an aqueous solution under the action of a catalyst to obtain polyhydrogen silsesquioxane. The specific steps are as follows:
[0033] (1.1) Preliminary condensation: add 100 parts of chloroform, 1 part of catalyst and 15 parts of distilled water to the reaction kettle, then stir the solution at high speed to form an emulsion, then lower the temperature to -20℃, and slowly add trichlorosilane to it. 20 parts, after the dripping is completed, raise the temperature to room temperature, and continue to stir and react for 8 hours;
[0034] (1.2) Remove hydrochloric acid: then add 15 parts of triethylamine to it, continue the reaction for 2 hours, then stop the reaction, filter and remove the triethylamine hydrochloride salt generated by the reaction t...
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[0039] Example 2
[0040] A preparation method of organosilicon phosphorus synergistic flame retardant, the preparation method includes the following steps:
[0041] (1) Preparation of polyhydrogen silsesquioxane: hydrolyze trichlorosilane in an aqueous solution under the action of a catalyst to obtain polyhydrogen silsesquioxane. The specific steps are as follows:
[0042] (1.1) Preliminary condensation: add 100 parts of chloroform, 5 parts of catalyst and 15 parts of distilled water to the reaction kettle, then stir the solution at high speed to form an emulsion, then lower the temperature to -20°C, and slowly add trichlorosilane to it. 35 parts, after the dripping is completed, raise the temperature to room temperature, and continue to stir and react for 12 hours;
[0043] (1.2) Remove hydrochloric acid: then add 15 parts of triethylamine to it, continue the reaction for 5 hours, then stop the reaction, filter and remove the triethylamine hydrochloride salt generated by the reactio...
Example Embodiment
[0048] Example 3
[0049] A preparation method of organosilicon phosphorus synergistic flame retardant, the preparation method includes the following steps:
[0050] (1) Preparation of polyhydrogen silsesquioxane: hydrolyze trichlorosilane in an aqueous solution under the action of a catalyst to obtain polyhydrogen silsesquioxane. The specific steps are as follows:
[0051] (1.1) Preliminary condensation: add 100 parts of chloroform, 3 parts of catalyst and 15 parts of distilled water to the reactor, then stir the solution at high speed to form an emulsion, then lower the temperature to -20℃, and slowly add trichlorosilane to it. 30 parts, after the dripping is completed, raise the temperature to room temperature, and continue to stir and react for 10 hours;
[0052] (1.2) Remove hydrochloric acid: then add 15 parts of triethylamine to it, continue the reaction for 3 hours, then stop the reaction, filter and remove the triethylamine hydrochloride salt generated by the reaction to obta...
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