Effect of the conversion degree on the healing efficiency of a novel thermally remendable polymer

  • سال انتشار: 1397
  • محل انتشار: ششمین کنفرانس بین المللی کامپوزیت، مشخصه سازی،ساخت و کاربرد
  • کد COI اختصاصی: COMPOSIT06_054
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 394
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نویسندگان

P Shabani

MSc student,Mechanics and Dynamics, School of Mechanical Engineering, Iran University of Science and Technology, Narmak, Tehran, ۱۶۸۴۶-۱۳۱۱۴, Iran

M.M Shokrieh

Ph.D. student, Composites Research Laboratory, Center of Excellence in Experimental Solid Mechanics and Dynamics, School of Mechanical Engineering, Iran University of Science and Technology, Narmak, Tehran, ۱۶۸۴۶-۱۳۱۱۴, Iran

I Zibaei

Professor,Mechanics and Dynamics, School of Mechanical Engineering, Iran University of Science and Technology, Narmak, Tehran, ۱۶۸۴۶-۱۳۱۱۴, Iran

چکیده

In this paper, the effect of the conversion degree on the healing efficiency of a remendable polymer which consists of reversible and irreversible bonds was experimentally studied. Using the results of DSC test, an autocatalytic model was fitted to the conversion degree of the reversible part of the polymer cross-links. Then, monomers with the capability of reversible bond forming were blended with monomers of the irreversible hot-cured resin to increase the mechanical properties. Three-point bending samples were fabricated using a certain curing procedure which guarantees the formation of both reversible and irreversible bonds of the polymer. The samples were subjected to three-point bending test up to final failure. Based on the DSC test results and conversion curve, the appropriate time and temperature for healing procedure were selected at different conversion degrees. After healing, the samples were damaged under three-point bending test again. The experimental results showed that in high conversion degree, the healing efficiency increased significantly.

کلیدواژه ها

Self-healing polymer, Conversion degree, Healing efficiency

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