In this experiment no solvent based polyurethane(PU) adhesives were prepared with the polyol, isocyanate, dioctyl phthalate(DOP), 2-hydroxyethylacrylate(2-HEA) and other acrylate monomers. The softenening point of the PU adhesives measured by Ring & Ball method were examined in the present study. And adhesion strength and mechanical properties such as tensile strength and 100% modulus of the PU adhesives were evaluated by Universal Test Machine. The experimental results showed that increase of both DPE-41, benzoylperoxide(BPO) and toluene diisocyanate(TDI) increased softenening point, adhesion strength, tensile strength and 100% modulus. However as DOP content increased sofenening point, adhesion strength decreased and tensile strength, 100% modulus also decreased.

Abstract
 1. 서 론
 2. 재료 및 실험방법
  2.1. 무용제형 polyurethane 중합반응
  2.2. 특성평가
 3. 결과 및 고찰
  3.1. DPE-41의 함량변화에 따른 영향
  3.2. TDI 함량변화에 따른 영향
  3.3. 개시제 함량변화에 따른 영향
  3.4. 가소제 함량변화에 따른 영향
 4. 결론
 감사의 글
 참고문헌

• 류기정(부경대학교 공과대학 고분자공학과) | Ki-Jung Ryu (Dept. of Polymer Engineering, Pukyong National University)
• 박찬영(부경대학교 공과대학 고분자공학과) | Chan-Young Park (Dept. of Polymer Engineering, Pukyong National University) Corresponding author