High-viscosity intrinsic flame-retardant polyamide and preparation method thereof
A flame-retardant polyamide, high-viscosity technology, applied in the field of high-viscosity intrinsic flame-retardant polyamide and its preparation, can solve the problem of polymer viscosity reduction, copolymerization of flame-retardant polyamide, copolymerization of flame-retardant polyamide viscosity reduction, and cost increase and other problems, achieve the effects of excellent tensile strength and bending strength, reduce process steps, and avoid technical difficulties
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Embodiment 1
[0068] The flame retardant and chain extender used in this embodiment are as follows:
[0069] Flame retardant: CEPPA, the Chinese alias is 2-carboxyethylphenylphosphinic acid (C 9 h 11 o 4 P), purchased from Dezhou Changxing Chemical New Material Development Co., Ltd., physical and chemical properties: molecular weight: 214.16, white powdery solid, melting point: 156-159 ° C;
[0070] Chain extender: BASF Joncryl ADR 4300, purchased from BASF Corporation, with an epoxy equivalent of 445, a weight-average relative molecular weight of 5500, and a glass transition temperature of 56°C.
[0071] 1393.3 g of hexamethylenediamine and 1295 g of adipic acid were salted in deionized water at 50° C. to a concentration of 50% by mass. Add the salt solution into the high-temperature and high-pressure reactor, and after three times of positive pressure and negative pressure replacement, the reactor contains 0.04MPa of nitrogen, heated to make the temperature reach 230°C, and the pressur...
Embodiment 2
[0075]The flame retardant and chain extender used in this embodiment are as follows:
[0076] Flame retardant: CEPPA, the Chinese alias is 2-carboxyethylphenylphosphinic acid (C 9 h 11 o 4 P), purchased from Dezhou Changxing Chemical New Material Development Co., Ltd., physical and chemical properties: molecular weight: 214.16, white powdery solid, melting point: 156-159 ° C;
[0077] Chain extender: BASF Joncryl ADR 4300, purchased from BASF Corporation, with an epoxy equivalent of 445, a weight-average relative molecular weight of 5500, and a glass transition temperature of 56°C.
[0078] 1393.3 g of hexamethylenediamine and 1295 g of adipic acid were salted in deionized water at 50° C. to a concentration of 50% by mass. Add the salt solution into the high-temperature and high-pressure reactor, and after three times of positive pressure and negative pressure replacement, the reactor contains 0.04MPa of nitrogen, heated to make the temperature reach 230°C, and the pressure...
Embodiment 3
[0082] The flame retardant and chain extender used in this embodiment are as follows:
[0083] Flame retardant: CEPPA, the Chinese alias is 2-carboxyethylphenylphosphinic acid (C 9 h 11 o 4 P), purchased from Dezhou Changxing Chemical New Material Development Co., Ltd., physical and chemical properties: molecular weight: 214.16, white powdery solid, melting point: 156-159 ° C;
[0084] Chain extender: BASF Joncryl ADR 4300, purchased from BASF Corporation, with an epoxy equivalent of 445, a weight-average relative molecular weight of 5500, and a glass transition temperature of 56°C.
[0085] 1393.3 g of hexamethylenediamine and 1295 g of adipic acid were salted in deionized water at 50° C. to a concentration of 50% by mass. Add the salt solution into the high-temperature and high-pressure reactor, and after three times of positive pressure and negative pressure replacement, the reactor contains 0.04MPa of nitrogen, heated to make the temperature reach 230°C, and the pressur...
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Abstract
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