A kind of flame retardant monomer and its preparation method and application
A technology of flame retardant monomer and reed fiber, applied in the field of functional polymer materials, can solve the problems of affecting the mechanical properties of composite materials, secondary harm to the human body and the environment, and large amount of addition, and achieve durable flame retardancy and good mechanical properties. and flame retardant properties, the effect of reducing surface polarity
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Embodiment 1
[0029] Synthetic method of new phosphorus-containing, nitrogen-free halogen-free flame retardant monomer PPP: Weigh 4.3g of anhydrous piperazine, 10.50g of phenyl phosphate dichloride, 40ml of acetonitrile and 10.1g of triethylamine, and anhydrous piperazine, tri Ethylamine was added into a three-necked flask equipped with a magnetic stirring and reflux condensing device, and the acetonitrile solution of phenyl phosphate dichloride was slowly dropped into the three-necked flask at 25°C, and reacted at 50°C for 10 hours. After the reaction is over, put in an appropriate amount of acetone, cool, stand still, separate the liquid, leave a layer of white solution, then wash with acetone, acetonitrile and water several times in sequence, filter with suction, and dry in a blast drying oven at 80°C for 4 hours , to obtain a pale yellow powder product (PPP).
[0030] The preparation method of halogen-free flame-retardant grafted modified reed fiber: first, dry the unmodified reed fiber...
Embodiment 2
[0033] Synthetic method of new phosphorus-containing, nitrogen-free halogen-free flame retardant monomer PPP: Weigh 4.3g of anhydrous piperazine, 10.50g of phenyl phosphate dichloride, 40ml of acetonitrile and 10.1g of triethylamine, and anhydrous piperazine, tri Ethylamine was added into a three-necked flask equipped with a magnetic stirring and reflux condensing device, and the acetonitrile solution of phenyl phosphate dichloride was slowly dropped into the three-necked flask at 25°C, and reacted at 50°C for 10 hours. After the reaction is over, put in an appropriate amount of acetone, cool, stand still, separate the liquid, leave a layer of white solution, then wash with acetone, acetonitrile and water several times in sequence, filter with suction, and dry in a blast drying oven at 80°C for 4 hours , to obtain a pale yellow powder product (PPP).
[0034] The preparation method of halogen-free flame-retardant grafted modified reed fiber: first, dry the unmodified reed fiber...
Embodiment 3
[0037]Synthetic method of new phosphorus-containing, nitrogen-free halogen-free flame retardant monomer PPP: Weigh 4.3g of anhydrous piperazine, 10.50g of phenyl phosphate dichloride, 40ml of acetonitrile and 10.1g of triethylamine, and anhydrous piperazine, tri Ethylamine was added into a three-necked flask equipped with a magnetic stirring and reflux condensing device, and the acetonitrile solution of phenyl phosphate dichloride was slowly dropped into the three-necked flask at 25°C, and reacted at 50°C for 10 hours. After the reaction is over, put in an appropriate amount of acetone, cool, stand still, separate the liquid, leave a layer of white solution, then wash with acetone, acetonitrile and water several times in sequence, filter with suction, and dry in a blast drying oven at 80°C for 4 hours , to obtain a pale yellow powder product (PPP).
[0038] The preparation method of halogen-free flame-retardant grafted modified reed fiber: first, dry the unmodified reed fiber ...
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