Properties of Domestic Moderate Temperature Curing Hot-break Adhesive Film
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Beijing Spacecrafts Manufacturing Co., Ltd,Beijing 100094

Clc Number:

TQ4363

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    Abstract:

    The bonding and hot-break properties of a domestic adhesive film for satellite solar wing substrate were investigated, and the carbon fiber grid panel/aluminum honeycomb sandwich structures were prepared by hot-break gluing using domestic and imported adhesive films, and the bending properties were evaluated. The results show that the tensile shear strengths of the domestic adhesive film at room temperature is 34.9 MPa,it reduce to 10.2 MPa at 150 ℃ and 30.4 MPa at -150 ℃. The tensile shear strength of CFRP substrate is 17.5 MPa at room temperature, and the mixed failure mode is the CFRP substrate delamiation failure and adhesive cohesion failure. The adhesive film has excellent hot-break process characteristics, the blow hole rate is better than 99.9%, the 90° peel strength of aluminum honeycomb-sandwich structure is 15.4 N/cm.Bending properties of the domestic and imported Redux312UL honeycomb sandwich structure is equivalent. Bending stiffness of honeycomb sandwich structure is 1.94×108 N·mm², and bending strength is 35.7 MPa.

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History
  • Received:May 31,2022
  • Revised:March 17,2023
  • Adopted:November 07,2022
  • Online: April 26,2023
  • Published: April 30,2023