Method for preparing polyolefin/carbon nano tube composite material by water cross-linking reaction
A technology of carbon nanotubes and composite materials, which is applied in the field of preparation of carbon nanotube composite materials, can solve the problems of little improvement in the mechanical properties and thermal stability of polyolefin/carbon nanotube composite materials, and overcome the lack of mechanical properties , Excellent electrical conductivity, anti-aggregation effect
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Embodiment 1
[0046] In parts by mass, step 1, material preparation: by weight, 0.8 part of polyethylene resin, 0.08 part of carbon nanotube and 0.024 part of vinyltrimethoxysilane;
[0047] Step 2, disperse the vinyltrimethoxysilane coupling agent in 0.1 part of acetone solvent, and fully stir it;
[0048] Step 3, adding the acetone solution of vinyltrimethoxysilane dispersed in the above step 2 to the carbon nanotubes, stirring and dispersing;
[0049] Step 4, add 0.0006 parts of initiator 1,4-bis-tert-butyl peroxide cumene and 0.0004 parts of catalyst dibutyltin dilaurate to the above mixed solution, and then stir at 50°C for 0.5 hours;
[0050] Step 5, adding polyethylene resin, stirring evenly, finally adding the processed polyethylene resin from the main feeding port into a twin-screw extruder to extrude and granulate to obtain polyolefin / carbon nanotube composite material 1#; The temperature of the screw extruder and die is 170°C-220°C, and the screw speed is 400rpm.
[0051] The tes...
Embodiment 2
[0053] In parts by mass, step 1, material preparation: by weight, 0.9 part of polyethylene resin, 0.02 part of carbon nanotube and 0.024 part of vinyltrimethoxysilane;
[0054] Step 2, disperse the vinyltrimethoxysilane coupling agent in 0.055 parts of acetone solvent, and fully stir it;
[0055] Step 3, adding the acetone solution of vinyltrimethoxysilane dispersed in the above step 2 to the carbon nanotubes, stirring and dispersing;
[0056] Step 4, add 0.0005 parts of initiator 1,4-bis-tert-butylperoxycumene and 0.0005 parts of catalyst butyl titanate to the above mixed solution, and then stir at 70°C for 0.5 hours;
[0057] Step 5, adding polyethylene resin, stirring evenly, finally adding the processed polyethylene resin from the main feeding port into a twin-screw extruder to extrude and granulate to obtain polyolefin / carbon nanotube composite material 1#; The temperature of the screw extruder and die is 170°C-220°C, and the screw speed is 400rpm.
[0058] The test dat...
Embodiment 3
[0060] In parts by mass, step 1, material preparation: by weight, 0.9 parts of polyethylene resin, 0.01 parts of carbon nanotubes and 0.035 parts of methyltriethoxysilane and vinyltrimethylsilane in a ratio of 1:1 mixture;
[0061] Step 2, disperse the coupling agent of the mixture of methyltriethoxysilane and vinyltrimethylsilane in a ratio of 1:1 into 0.053 parts of acetone solvent, and fully stir and disperse;
[0062] Step 3, adding the acetone solution of silane dispersed in the above step 2 to the carbon nanotubes, stirring and dispersing;
[0063] Step 4, add 0.001 part of initiator 1,4-bis-tert-butyl peroxide cumene and 0.001 part of catalyst calcium stearate to the above mixed solution, and then stir at 80° C. for 0.5 hours;
[0064] Step 5, adding polyethylene resin, stirring evenly, finally adding the processed polyethylene resin from the main feeding port into a twin-screw extruder to extrude and granulate to obtain polyolefin / carbon nanotube composite material 1#...
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