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Preparation method for three-dimensional graphene network reinforced nylon 6 nanometer composite master batch

A nano-composite and graphene technology, which is applied in the field of polymer composite material preparation, can solve the problems of inability to fully exert the properties of graphene, difficulty in forming stress transfer, and weak interface interaction, so as to achieve good application value and improve interface interaction. Effective strength, good load transfer effect

Active Publication Date: 2017-07-18
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method of prefabricating graphene aerogels still has the following problems. First, the preparation of graphene aerogels often requires freeze-drying, which takes a long time and consumes a lot of energy; Structural collapse inevitably occurs during drying, the pore size becomes larger, and some graphene overlaps again, so that the performance of graphene cannot be fully utilized
Finally, the interfacial interaction between graphene and polymer is still weak, and it is difficult to form a strong transfer stress effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] a. Preparation of graphene / caprolactam / 6-aminocaproic acid hydrogel: Mix 50 grams of caprolactam, 4 grams of 6-aminocaproic acid and 20 milliliters of graphene oxide aqueous solution with a concentration of 2 mg / ml, and disperse until uniform by ultrasonic.

[0023] b. Add 0.06 g of ascorbic acid, stir until completely dissolved, put the mixed solution into the sealed inner cup of the hydrothermal reaction kettle, heat up to 80°C, and keep for 10 hours. Graphene oxide was thermally reduced by ascorbic acid and formed graphene / caprolactam / 6-aminocaproic acid hydrogel in solution.

[0024] c. Take out the graphene / caprolactam / 6-aminocaproic acid hydrogel, and treat it at 100° C. with a vacuum of -70KPa for 4 hours to remove most of the moisture in the gel.

[0025] d. The graphene / caprolactam / 6-aminocaproic acid gel obtained after the treatment in step c was prepolymerized for 2 hours at 180° C. under the protection of a nitrogen atmosphere to prepare a graphene / nylon 6 p...

Embodiment 2

[0033] a. Preparation of graphene / caprolactam / 6-aminocaproic acid hydrogel: Mix 50 grams of caprolactam, 3 grams of 6-aminocaproic acid and 40 milliliters of graphene oxide aqueous solution with a concentration of 4 mg / ml, and disperse until uniform by ultrasonic.

[0034] b. Add 0.32 g of ascorbic acid, stir until completely dissolved, put the mixed solution into the sealed inner cup of the hydrothermal reaction kettle, heat up to 90°C, and keep for 8 hours. Graphene oxide was thermally reduced by ascorbic acid and formed graphene / caprolactam / 6-aminocaproic acid hydrogel in solution.

[0035] c. Take out the graphene / caprolactam / 6-aminocaproic acid hydrogel, and treat it at 105°C for 5 hours under a vacuum of -80KPa to remove most of the moisture in the gel.

[0036] d. The graphene / caprolactam / 6-aminocaproic acid gel obtained after the treatment in step c was prepolymerized for 3 hours at 190° C. under the protection of a nitrogen atmosphere to prepare a graphene / nylon 6 pre...

Embodiment 3

[0044] a. Preparation of graphene / caprolactam / 6-aminocaproic acid hydrogel: Mix 50 grams of caprolactam, 3 grams of 6-aminocaproic acid and 50 milliliters of graphene oxide aqueous solution with a concentration of 6 mg / ml, and disperse until uniform by ultrasonic.

[0045] b. Add 0.63 g of ascorbic acid, stir until completely dissolved, put the mixed solution into the sealed inner cup of the hydrothermal reaction kettle, heat up to 80°C, and keep for 12 hours. Graphene oxide was thermally reduced by ascorbic acid and formed graphene / caprolactam / 6-aminocaproic acid hydrogel in solution.

[0046] c. Take out the graphene / caprolactam / 6-aminocaproic acid hydrogel, and treat it at 105° C. for 8 hours under a vacuum of -70KPa to remove most of the moisture in the gel.

[0047] d. The graphene / caprolactam / 6-aminocaproic acid gel obtained after the treatment in step c was prepolymerized for 3 hours at 190° C. under the protection of a nitrogen atmosphere to prepare a graphene / nylon 6 ...

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Abstract

The invention discloses a preparation method for a three-dimensional graphene network reinforced nylon 6 nanometer composite master batch. The preparation method comprises the following steps: reducing graphene oxide in a feed aqueous solution of synthesized nylon 6 to form a self-assembled graphene three-dimensional network structure; removing water in the three-dimensional network structure; pre-polymerizing and polymerizing the synthesized nylon 6 raw material in the three-dimensional structure to form a three-dimensional graphene network reinforced nylon 6 nanometer composite material, smashing, washing and filtering to obtain the three-dimensional graphene network reinforced nylon 6 nanometer composite master batch. The preparation method is simple in process, and contributes to energy saving; the graphene three-dimensional network structure is complete, and can play a role in conducting heat and conducting electricity; strong interfacial force between graphene and the nylon 6 is achieved, and the nanometer reinforcing effect of the graphene can be brought into full play. The prepared three-dimensional graphene network reinforced nylon 6 nanometer composite master batch has high mechanical performance, heat conductivity and machining performance; meanwhile, the three-dimensional graphene network reinforced nylon 6 nanometer composite master batch is low in cost, and has a high application value in the fields of automobiles, clothes, electronics and the like.

Description

technical field [0001] The invention relates to a preparation method of a polymer composite material, in particular to a preparation method of a graphene-reinforced polymer nanocomposite material or a composite material with nylon 6 as a matrix. Background technique [0002] Nylon 6 is a thermoplastic engineering polymer material, which is widely used in automobiles, electrical appliances, and fishery due to its excellent mechanical properties, good electrical properties, wear resistance, oil resistance, self-lubrication, corrosion resistance and good processing properties and clothing fields. However, in order to broaden and deepen the application field and replace traditional materials, the mechanical properties, thermal conductivity and flame retardancy of nylon still need to be improved. [0003] Graphene material has excellent mechanical, optical, electrical and chemical properties due to its unique two-dimensional crystal structure. .Science, 2004,306,666) is more an...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08K3/04C08K7/00C08G69/16
CPCC08G69/16C08K3/04C08K7/00C08K2201/011C08L77/02
Inventor 王睿吴立新郑幼丹王号朋
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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