http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Janrahman Simarmata (검색결과 1 건)
- 무료
- 기관 내 무료
- 유료
-
Physical and Mechanical Properties of Three-layer Particleboards Bonded With UF and UMF Adhesives
Apri Heri Iswanto,Janrahman Simarmata,Widya Fatriasari,Irawati Azhar,Tito Sucipto,Rudi Hartono 한국목재공학회 2017 목재공학 Vol.45 No.6
A low dimensional stability and poor bending strength properties were main problems in particleboard manufacturing. The objective of this research was to evaluate the effect of mixed wood species and urea-form-aldehyde (UF) or urea-melamine-formaldehyde (UMF) resins on the physical and mechanical properties of three-layer particleboards. The ratio of face/core/back layer was 1 : 2 : 1. The resin content of 12% for both UF resins and UMF resins (UF/MF = 70/30% w/w) was used. The results of this study showed that the utilization of S.mahagony shaving using both UF and UMF resins caused a decrease in the thickness swelling and water absorption of the boards. Thickness swellings of particleboard made of Sengon/Sengon/Sengon (SSS), Mahogany/Mahogany/Mahogany (MMM), Sengon/Mahogany/Sengon (SMS), and Mahogany/Sengon/Mahogany (MSM) were in the range of 23%, 12∼16%, 14∼16%, and 13∼21%, respectively. The board bonded with UMF resin demonstrated better dimensional stability than that bonded with UF resin alone. Modulus of elasticity (MOE) and modulus of rupture (MOR) of particleboards made of S. mahagony shaving in the surface layer in both MMM and MSM boards were better than those of the SSS and SMS. MOE of MMM and MSM board was in the ranges of 24,000 to 26,000 kg.cm<sup>-2</sup> and 18,000 to 21,000 kg.cm<sup>-2</sup> respectively. Meanwhile, the MOR of board was in the ranges of 200 to 240 kg.cm<sup>-2</sup> and 190 to 228 kg.cm<sup>-2</sup>, respectively.
ScienceON
KISS연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
