Process for preparing polyamide graphene composite material
A composite material and preparation technology, which is applied in the direction of single-component polyamide rayon, rayon manufacturing, conductive/antistatic filament manufacturing, etc., can solve the problems of uncontrolled polyamide water content, complicated operation steps, and product performance. Influence and other issues, to achieve the uniformity of production quality and production stability, improve the dispersion effect, improve the effect of mechanical properties
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[0030] Example 1
[0031] (1) Pretreatment: Surface treatment of 10 parts of graphene, 20 parts of nano tourmaline, and 20 parts of nano silver ion with 1 part of silane coupling agent KH-560;
[0032] (2) Pre-mixing: mix the graphene treated in step (1) with functional additives, then add 1 part of polycarbodiimide UN-03, 10 parts of Tween 80 and 30 parts of o-p-toluene sulfonamide, ultrasonic 50min to obtain the modified mixed solution;
[0033] (3) Melt intercalation polymerization: mix caprolactam and the modified mixture obtained in step (2) at a mass ratio of 100:3, react at a temperature of 210°C and a pressure of 0.1MPa for 8 hours, and then extrude and pelletize to obtain graphite Ane / polyamide composite material.
Example Embodiment
[0034] Example 2
[0035] (1) Pretreatment: use 1 part of titanate coupling agent TMC-201 and 0.5 parts of silane coupling agent KH for 20 parts of graphene, 30 parts of nano tourmaline, 10 parts of nano copper ions, and 5 parts of nano titanium ions. -570, 1 part of silane coupling agent KH-550, 1 part of silane coupling agent KH-550 for surface treatment;
[0036] (2) Pre-mixing: Mix the graphene treated in step (1) with functional additives, and then add 3 parts of polycarbodiimide K-1, 5 parts of sodium dodecylbenzene sulfonate and 20 parts of ethylene Alcohol ester, ultrasonic for 30min to obtain the modified mixture;
[0037] (3) Melt intercalation polymerization: mix caprolactam and the modified mixture obtained in step (2) at a mass ratio of 100:5, react at a temperature of 250°C and a pressure of 0.05MPa for 8 hours, and then extrude and pelletize to obtain graphite Ane / polyamide composite material.
Example Embodiment
[0038] Example 3
[0039] (1) Pretreatment: Use 2 parts of titanate coupling agent TMC-TTS, 2 parts of silane coupling agent KH-550, and 1 part of silane respectively with 30 parts of graphene, 8 parts of nano tourmaline and 16 parts of nano copper ion. Coupling agent KH-560 for surface treatment;
[0040] (2) Pre-mixing: Mix the graphene treated in step (1) with the functional additives, and then add 5 parts of polycarbodiimide K-1, 5 parts of polyoxyethylene lauryl ether, and 5 parts of polyoxyethylene 12 Alkyl ether, 50 parts of p-toluenesulfonamide and 6 parts of thiourea peroxide, ultrasonic 60min, to obtain the modified mixed solution;
[0041] (3) Melt intercalation polymerization: The caprolactam and the modified mixture obtained in step (2) are mixed at a mass ratio of 100:1, reacted at a temperature of 240°C under normal pressure for 9 hours, and then extruded and pelletized to obtain graphene / Polyamide composite material.
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