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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.1
- 수록면
- 1,396 - 1,403 (8page)
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초록· 키워드
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In this study, fast-curing shielding materials were prepared with a two-component polyurethanematrix and a filler material of PbO through a one-step, laboratory-scale method.
With an increase in the filler content, viscosity increased. However, the two componentsshowed a small difference. Curing time decreased as the filler content increased. Theminimum tack-free time of 27 s was obtained at a filler content of 70 wt%. Tensile strengthand compressive strength initially increased and then decreased as the filler contentincreased. Even when the filler content reached 60 wt%, mechanical properties were stillgreater than those of the matrix. Cohesional strength decreased as the filler contentincreased. However, cohesional strength was still greater than 100 kPa at a filler content of60 wt%. The g-ray-shielding properties increased with the increase in the filler content, andcomposite thickness could be increased to improve the shielding performance when theenergy of g-rays was high. When the filler content was 60 wt%, the composite showedexcellent comprehensive properties.
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