Method for preparing thermoplastic composite material airplane horizontal tail leading-edge sheath

Method for preparing thermoplastic composite material airplane horizontal tail leading-edge sheath

  • CN 104,589,664 A
  • Filed: 11/27/2014
  • Published: 05/06/2015
  • Est. Priority Date: 11/27/2014
  • Status: Active Application
First Claim
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1. prepare a method for thermoplastic composite aircraft horizontal tail skins front edges, it is characterized in that:

  • comprise the following steps;

    (1) thermoplastic composite is prepared1. melting;

    by CFF and PPS film or PPS nonwoven fabric laminate, be warming up to 320-340 DEG C, makes PPS film or the whole melting of PP non-woven fabrics;

    2. infiltrate;

    after the whole melting of PPS, 0.5-2.1MPa is forced into PPS melt and enhanced fabrics, PPS melt is fully infiltrated enhanced fabrics;

    3. lower the temperature;

    with the rate of temperature fall of 40-100 DEG C/min, the enhanced fabrics infiltrating PPS is lowered the temperature, be cooled to 240 DEG C-260 DEG C;

    4. pressurize;

    240 DEG C-260 DEG C time, be forced into 3-7MPa, and when maximum pressure value, pressurize 5-10min;

    5. cool;

    release pressure to normal pressure, and naturally cools to room temperature, obtained material requested.(2) compression moldingThe thermoplastic composite of described step (1) gained is heated to 270-280 DEG C, put into aircraft leading edge covering die and carry out punching press, mold temperature is 230-250 DEG C, in 15-30s, mould inner pressure is added to 1-8MPa, after reaching maximum pressure, after pressurize 1-4min, namely obtain aircraft horizontal tail skins front edges.

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