T/SCSKJQYLHH 26-2024 The processing specifications for the fabrication of an ultra-fine fiber with a graphene-core/shell structure hybrid anti-reflective property

Scope

Main Technical Content: 4.1 Processing Flow: The processing of graphene-hybridized ultra-fine fibers with a sheath-core structure involves using graphene-hybridized PET chips and conventional PET chips as raw materials. The sheath-core pre-oriented yarn (POY) is processed through the following steps: guide wire, guide pipe, second guide wire, pre-network nozzle, first feeding roller, twist stopper, heat setting box, cooling plate, false twister, second feeding roller, heat setting box, third feeding roller, probe roller, oiling roller, friction roller, and DTY coiling. 4.2 Processing Key Points: 4.2.1 Slice Requirements: The graphene-hybridized PET slice should have a sheath layer, while the conventional PET slice should have a core layer. 4.2.2 Drying Conditions: Nitrogen and other inert gases are used as drying media, with a drying temperature of around 160–180 °C and a drying time of 4–6 hours. 4.2.3 Melt Filtration Conditions: The filter mesh is selected from 200 to 500 mesh. 4.2.4 Spinning Box Conditions: The melt temperature is controlled between 275–295 °C, with a temperature deviation of ±1 °C. The melt pressure in the spinning box is maintained between 10–20 MPa, with a pressure fluctuation range of ±1 MPa. According to customer requirements, the metering pump parameters are set to precisely control the melt flow rate within ±1%. 4.2.5 Spinning Components Conditions: The spinneret is designed based on the customer's requirements for fiber thickness and cross-section. 4.2.6 Blowing: Ring blowing is used with a wind temperature of 15–30 °C, a wind speed of 0.3–1.5 m/s, and a relative humidity of 40–70%. 4.2.7 Coiling: The coiling speed is between 2,800–3,500 m/min.

Development Information

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