High-flame-retardancy PC composite material suitable for FDM and preparation method
A composite material, high flame retardant technology, applied in the field of FDM molding, can solve the problem of poor flame retardant, achieve the effect of improving the flame retardant effect, reducing thermal degradation and hydrolysis, and avoiding the reduction of mechanical properties
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[0042] Example 1
[0043] (1) Weigh the raw materials according to the weight ratio as follows:
[0044] Polycarbonate raw material: 90 parts
[0045] Red phosphorus flame retardant: 2.09 parts
[0046] PTFE: 0.1 part
[0047] Synergist FR-18: 0.2 parts
[0048] Silane coupling agent: 2.0 parts
[0049] Silicone oil: 1.0 part
[0050] Chain extender MDS601: 0.8 parts
[0051] Toughener MBS: 2 parts
[0052] Ultraviolet absorber Chiguard UV-5411: 0.3 parts
[0053] (2) Wash and dry the red phosphorus flame retardant powder, then use an alcohol solvent and a silane coupling agent to modify the surface, and dry and screen to obtain the surface modified inorganic powder;
[0054] (3) Mix the surface-modified red phosphorus flame retardant powder, PC material and low-boiling organic solvent, keep it for a period of time, and finally obtain the phosphorus-based flame retardant composite PC material aggregate, which is modified and granulated by twin screw ;
[0055] (4) Mix and extrude the pelletize...
Example Embodiment
[0056] Example 2
[0057] (1) Weigh the raw materials according to the weight ratio as follows:
[0058] Polycarbonate raw material: 85 parts
[0059] Red phosphorus: 3.0 parts
[0060] PTFE: 0.3 parts
[0061] Synergist MMT: 0.2 parts
[0062] Titanate coupling agent: 1.0 part
[0063] Silicone oil: 2 parts
[0064] Chain extender MDS601: 0.6 parts
[0065] Toughening agent MBS: 0.5 parts
[0066] UV absorber Hostavin B-CAP: 0.3 parts
[0067] (2) Wash and dry the red phosphorus flame retardant powder, then use alcohol solvent and titanate coupling agent to modify the surface, and dry and siev to obtain the surface modified inorganic powder;
[0068] (3) Mix the surface-modified red phosphorus flame retardant powder, PC material and low-boiling organic solvent, keep it for a period of time, and finally obtain the phosphorus-based flame retardant composite PC material aggregate, which is modified and granulated by twin screw ;
[0069] (4) Mix and extrude the pelletized red phosphorus flame re...
Example Embodiment
[0070] Example 3
[0071] (1) Weigh the raw materials according to the weight ratio as follows:
[0072] Polycarbonate raw material: 90 parts
[0073] Phosphite: 4.0 parts
[0074] PTFE: 0.3 parts
[0075] Synergist MMT: 0.3 parts
[0076] Silane coupling agent: 0.5 parts
[0077] Silicone oil: 0.2 parts
[0078] Chain extender MDS601: 0.5 part
[0079] Toughener MBS: 0.6 parts
[0080] Ultraviolet absorber Chiguard UV-5411: 0.3 parts
[0081] (2) Dry the phosphite flame retardant, then modify it with an alcohol solvent and a silane coupling agent, and dry and screen to obtain a modified powder;
[0082] (3) Mix the surface-modified phosphite flame retardant powder, PC material and low boiling point organic solvent, keep it for a period of time, and finally obtain the phosphorus-based flame retardant composite PC material aggregate, which is modified and granulated by twin screw spare;
[0083] (4) Mix and extrude the pelletized phosphite flame retardant composite PC material aggregate and lub...
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