Preparation method of hybrid flame retardant and water-based steel structure fireproof coating
A fire retardant coating and flame retardant technology, applied in the field of flame retardants, can solve problems such as low flame retardant efficiency, inability to solve the problem of polymer burning and molten droplets, etc., and achieve the effects of high flame retardant efficiency, good fire resistance, and simple reaction steps.
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[0019] A preparation method of a hybrid flame retardant, the method comprising the following steps:
[0020] S1: First prepare the phosphorus nitrogen-containing silane M, dissolve the imino-containing siloxane and aldehyde compound in the solvent according to the ratio of 1:1~3, then raise the temperature to 30~40°C, and react for 2~5h; then , Add dimethyl phosphite or diethyl phosphite in the same amount as the aldehyde compound into the reaction system using an automatic dropper, then raise the temperature to 60-75°C, and keep it for 8-20h. Finally, the product needs to be Purify by rotary evaporation to obtain phosphorus-containing silane M whose terminal group is siloxane;
[0021] S2: Add M and tetraethyl orthosilicate B into the reactor according to a certain amount of substances, and dissolve them in the solvent. The reaction temperature is -20~150°C, and then add deionized water drop by drop. A condensation reaction occurs, and the reaction time is 1 to 72 hours to o...
specific Embodiment 1
[0025] A preparation method of a hybrid flame retardant, the method comprising the following steps:
[0026] S1: First prepare the phosphorus nitrogen-containing silane M, dissolve the imino-containing siloxane and aldehyde compound in the solvent according to the ratio of 1:1, then raise the temperature to 30°C, and react for 2 hours; then, mix with the aldehyde compound The same amount of dimethyl phosphite or diethyl phosphite is added to the reaction system using an automatic dropper, and then the temperature is raised to 60°C and kept for 8 hours. Finally, the product needs to be purified by rotary evaporation to obtain the terminal group of silicon Phosphorous silane M of oxane;
[0027] S2: Add M and tetraethylorthosilicate B into the reactor according to a certain amount of substances, and dissolve them in the solvent. The reaction temperature is -20°C, and then add deionized water drop by drop, and condensation occurs between the reactants Reaction, the reaction time...
specific Embodiment 2
[0031] A preparation method of a hybrid flame retardant, the method comprising the following steps:
[0032] S1: First prepare the phosphorus nitrogen-containing silane M, dissolve the imino-containing siloxane and aldehyde compound in the solvent according to the ratio of 1:2, then raise the temperature to 35°C, and react for 3 hours; then, mix with the aldehyde compound The same amount of dimethyl phosphite or diethyl phosphite is added to the reaction system using an automatic dropper, and then the temperature is raised to 65°C and kept for 15 hours. Finally, the product needs to be purified by rotary evaporation to obtain the terminal group of silicon Phosphorous silane M of oxane;
[0033] S2: Add M and tetraethyl orthosilicate B into the reactor according to a certain amount of substances, and dissolve them in the solvent. The reaction temperature is 80°C, and then add deionized water drop by drop, and a condensation reaction occurs between the reactants , the reaction ...
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