Amidated graphene/nylon 6 nano composite material and preparation method thereof
A nanocomposite material and graphene technology, applied in the field of amidated graphene/nylon 6 nanocomposite material and its preparation, can solve the problem of low elongation at break and impact strength of the composite material, affecting the performance of the composite material, and hindering the growth of the nylon chain and other problems, to achieve good processability, reduce van der Waals force, and increase melt index.
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Embodiment 1
[0039] A preparation method of amidated graphene / nylon 6 nanocomposite material, comprising the following processing steps:
[0040] Step 1, disperse 100 parts of graphene oxide in deionized water to form a dispersion with a concentration of 0.5 mg / mL, add 5 parts of catalyst, the catalyst is 1-(3-dimethylaminopropyl)-3-ethyl Carbodiimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS) molar ratio of 1:1 MES buffer solution, stirred at room temperature for 30min to activate the carboxyl group;
[0041] Step 2, adding 5 parts of n-butylamine to the above-mentioned graphene oxide dispersion, stirring at room temperature for 12h to react, filtering, washing and then vacuum-drying to obtain amidated graphene powder;
[0042] Step 3, adding 0.1 parts by mass of amidated graphene powder and 2 parts by mass of deionized water to 100 parts by mass of caprolactam melt, and ultrasonically stirring at 80° C. for 30 minutes to form a dispersion;
[0043] Step 4, under the protection o...
Embodiment 2
[0050] A preparation method of amidated graphene / nylon 6 nanocomposite material, comprising the following processing steps:
[0051] Step 1, disperse 100 parts of graphene oxide in deionized water to form a dispersion with a concentration of 2 mg / mL, add 5 parts of catalyst, the catalyst is 1-(3-dimethylaminopropyl)-3-ethyl carbon Diimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS) molar ratio of 1:1 MES buffer, stirred at room temperature for 50min to activate the carboxyl group;
[0052] Step 2, adding 6 parts of n-butylamine to the above-mentioned graphene oxide dispersion, stirring at room temperature for 12h to react, filtering, washing and vacuum drying to obtain amidated graphene powder;
[0053] Step 3, adding 0.3 parts by mass of amidated graphene powder and 4 parts by mass of deionized water to 100 parts by mass of caprolactam melt, and ultrasonically stirring at 80° C. for 60 minutes to form a dispersion;
[0054] Step 4, under the protection of nitrogen, th...
Embodiment 3
[0057] A preparation method of amidated graphene / nylon 6 nanocomposite material, comprising the following processing steps:
[0058] Step 1, disperse 100 parts of graphene oxide in deionized water to form a dispersion with a concentration of 1 mg / mL, add 5 parts of catalyst, the catalyst is 1-(3-dimethylaminopropyl)-3-ethyl carbon Diimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS) molar ratio is the MES buffer solution of 1.5:1, stirs at room temperature for 40min to activate the carboxyl group;
[0059] Step 2, adding 5 parts of n-hexylamine to the above-mentioned graphene oxide dispersion, stirring at room temperature for 15h to react, filtering, washing and vacuum drying to obtain amidated graphene powder;
[0060] Step 3, adding 0.2 parts by mass of amidated graphene powder and 2 parts by mass of deionized water to 100 parts by mass of caprolactam melt, and ultrasonically stirring at 100° C. for 40 minutes to form a dispersion;
[0061] Step 4, under the protectio...
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