In situ polymerization one-dimensional electric high purity carbon/polyacrylonitrile composite polymer
A technology of composite polymer and polyacrylonitrile, which is applied in the field of composite polymer to achieve sustainable development, good process performance and cost reduction
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Examples
Embodiment 1
[0019] Example 1: 5 parts of carbon nanotubes (average diameter 0.015 μm, average length 10 μm) were used in a mixed solution of 95 parts of acrylonitrile, 4 parts of methyl acrylate, 1 part of itaconic acid and 300 parts of dimethyl sulfoxide Ultrasonic dispersion 4h, so that the carbon nanotubes dispersed evenly. Transfer these mixtures to a reaction kettle, stir with an electric mechanical stirrer (rotating speed 560r / min) for 20min under the protection of nitrogen, add 2 parts of azobisisobutyronitrile as an initiator, and heat the reaction kettle to 65°C after the dissolution is complete , and react at constant temperature for 24h to obtain a black composite polymer solution. The reaction product was transferred to a vacuum distillation device, and the unreacted acrylonitrile and methyl acrylate monomers were evaporated under reduced pressure at a vacuum degree of 150 mmHg and a temperature of 50°C. Then the temperature is raised to 60°C and after defoaming and filtering...
Embodiment 2~9
[0020] Examples 2-9: The preparation method is similar to that of Example 1, but the reaction conditions are as shown in Table 1.
[0021]
composition
monomer ratio
carbon nanotubes
reaction medium
Initiator
molecular weight
degree(℃)
when reacting
room (h)
Product spinning
silk properties
implement
Example 2
AN 100
SWNT 5
DMF 150
AIBN 3
0
60
48
Difference
implement
Example 3
AN 100, MA
15
MWNT 1
DMAc 900
BPO 1
IPA 3
72
36
it is good
implement
Example 4
AN 100,
MAA 3
VGCF 5
DMF 550
AIBN
Thiourea 1
64
24
it is good
...
Embodiment 10
[0024] Example 10: 1 part of sodium dodecylsulfonate, 2 parts of hydrogen peroxide and 1 part of ascorbic acid were dissolved in 300 parts of water in a reactor with electric stirring (rotating speed 600 r / min). Add 5 parts of vapor-grown carbon fibers (average diameter 0.150 μm, average length 10 μm) to a mixed solution of 95 parts of acrylonitrile, 4 parts of methyl methacrylate, and 1 part of acrylic acid, and disperse them with ultrasonic waves for 4 hours. And continue to stir for 10min. Raise the temperature of the reactor to 50° C. and keep it constant, and react monomers such as acrylonitrile for 8 hours to obtain a black precipitate. Filter the precipitate, wash it twice with 1000 parts of cold water, hot water (about 70°C), and ethanol successively, each time for 20 minutes, put it into a 60°C vacuum oven and dry it for 24 hours after suction filtration, and obtain the vapor phase grown carbon fiber / polyacrylonitrile composite polymer. Dissolve 18 parts of dry vapo...
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Abstract
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