Ultraviolet photo-curing transparent nylon and preparation method thereof
A technology of ultraviolet light and photocuring initiators, which is applied in the field of nylon, can solve the problems of decreased mechanical properties, low curing temperature, and limited application fields, and achieve the effects of improved mechanical properties, no color change, and high transparency
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Embodiment 1
[0020] Embodiment one: the preparation of transparent nylon 1
[0021] 1) Add 300kg of water to the reaction kettle, add 230kg of PACM, 200kg of sebacic acid, and 36kg of erucic acid, heat up to 100°C and stir until the solution is clear to obtain a salt solution;
[0022] 2) Press the salt solution into the polymerization kettle, set the oil temperature at 280°C, keep the pressure at 3MPa during the reaction, until the material rises to 250°C, slowly reduce the pressure to normal pressure, react at normal pressure for 1.5h, add 1.8kg of free Based photocuring initiator 1173 to obtain a prepolymer;
[0023] 3) The prepolymer obtained in step 2 was cut into pellets, dried in vacuum at 100° C., and stored away from light to obtain UV-cured transparent nylon 1.
Embodiment 2
[0024] Embodiment two: the preparation of transparent nylon 2
[0025] 1) Add 400kg of water to the reactor, add 245kg of MACM, 205kg of azelaic acid, and 30kg of oleic acid, heat up to 90°C and stir until the solution is clear to obtain a salt solution;
[0026] 2) Press the salt solution into the polymerization kettle, set the oil temperature at 260°C, keep the pressure at 1MPa during the reaction, until the material rises to 245°C, slowly reduce the pressure to normal pressure, react at normal pressure for 1 hour, add 2.2kg of photoinitiator Agent TPO, obtain prepolymer;
[0027] 3) The prepolymer obtained in step 2 was cut into pellets, dried in vacuum at 150° C., and stored away from light to obtain UV-cured transparent nylon 2.
Embodiment 3
[0028] Embodiment three: the preparation of transparent nylon 3
[0029] 1) Add 500kg of water and 5.8kg of hexamethylenediamine into the reaction kettle, stir at room temperature for 1 hour, add 210kg of PACM, 240kg of sebacic acid, heat up to 80°C and stir until the solution is clear to obtain a salt solution;
[0030] 2) Press the salt solution into the polymerization kettle, set the oil temperature to 300°C, keep the pressure at 3MPa during the reaction, until the material rises to 240°C, slowly reduce the pressure to normal pressure, react at normal pressure for 3 hours, add 2kg of photoinitiator 184, to obtain prepolymer;
[0031] 3) The prepolymer obtained in step 2 was cut into pellets, dried in vacuum at 135° C., and stored away from light to obtain UV-cured transparent nylon 3.
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