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Preparation method of oxidized graphene modified polyamide-6

A technology of graphene modification and polyamide, applied in the field of preparation of graphene oxide modified polyamide-6, can solve problems such as inability to produce injection-molded products, long production cycle, etc., and achieve the effects of increasing viscosity and increasing conveying pressure

Inactive Publication Date: 2019-11-12
JIANGSU RUIMEIFU IND
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Problems solved by technology

[0002] Polyamide-6 is a commonly used polymer raw material, which is mainly used in the fields of spinning and engineering plastics. It can be quickly molded and demolded at the usual injection molding temperature. At present, the flow performance of polyamide-6 slices directly affects the injection molding process. The products produced, the injection molding products produced by the existing polyamide-6 slices, the demoulding time is 45S, the production cycle is long; and the injection molding products with a thickness of less than 0.5mm cannot be produced

Method used

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Experimental program
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Embodiment Construction

[0015] The preparation method of graphene oxide modified polyamide-6 comprises the following steps:

[0016] 1. Raw material preparation: Put 100 parts of caprolactam and 0.1-0.5 parts of antioxidant additive SD-390 into the intermediate tank, heat to 100°C and mix evenly to form a stable mixed slurry;

[0017] 2. Pre-polymerization: Heat the mixed slurry to 180°C through the pre-heater, and then inject it into the pre-polymerizer. The material stays in the pre-polymerizer for 5-10 hours. The temperature of the pre-polymerizer is 220-260°C, and the pressure is 0.05- 0.3 MPa;

[0018] 3. Post-polymerization: The material that has reached the residence time is injected from the front polymerizer into the post-polymerizer, and the material stays in the post-polymerizer for 3-6 hours. The temperature of the post-polymerizer is 240-275 °C and the pressure is -0.03-0.05 Mpa, obtain polymer melt;

[0019] 4. Pelletizing: After the polymer melt reaching the residence time is filtere...

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Abstract

The invention discloses a preparation method of oxidized graphene modified polyamide-6. The preparation method comprises following steps: 1, raw material preparation; 2, pre-polymerization; 3, post-polymerization; 4, slicing; 5, extracting; and 6, drying cooling packaging. According to the preparation method, a composite component containing silicon, calcium ions, and sodium ions is introduced, sothat product flow performance is improved.

Description

technical field [0001] The invention relates to the technical field of polymer polymerization, in particular to a preparation method of graphene oxide modified polyamide-6. Background technique [0002] Polyamide-6 is a commonly used polymer raw material. It is mainly used in the fields of spinning and engineering plastics. It can be quickly molded and demolded at the usual injection molding temperature. At present, the flow properties of polyamide-6 slices directly affect the injection molding. The products produced, the injection molding products produced by the existing polyamide-6 slices, the demoulding time is 45S, the production cycle is long; and the injection molding products with a thickness of less than 0.5mm cannot be produced. Contents of the invention [0003] For above shortcoming, the present invention aims to provide the preparation method of graphene oxide modified polyamide-6, comprises the following steps: (1), raw material preparation; (2), pre-polymeri...

Claims

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Application Information

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IPC IPC(8): C08G69/16C08G69/14C08K3/04
CPCC08G69/14C08G69/16C08K3/042
Inventor 赵志
Owner JIANGSU RUIMEIFU IND
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