Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
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Physical Properties of Larch(Larix kaemferi Carr.) Treated by High Temperature Steaming - Effect of high temperature steaming on shrinkages of larch block -

고온수증기처리에 의한 낙엽송재의 물성(제2보) - 고온수증기처리에 의한 낙엽송재의 수축율 변화 -

  • Kim, Jung-Hwan (Department group of Forestry and Wood Science & Technology, College of Agriculture and Life Sciences, Kyungpook National University) ;
  • Lee, Weon-Hee (Department group of Forestry and Wood Science & Technology, College of Agriculture and Life Sciences, Kyungpook National University)
  • 김정환 (경북대학교 농업생명과학대학 임학.임산공학과군) ;
  • 이원희 (경북대학교 농업생명과학대학 임학.임산공학과군)
  • Received : 2001.10.22
  • Accepted : 2002.01.30
  • Published : 2002.06.26
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Abstract

This study deals with a physical properties of Larch(Larix kaemferi Carr.) treated at temperatures above 100℃. Treatment conditions of this experiment were operated at regular intervals of 20℃ at temperature up to 180℃ for 10, 30, 60 and 90 minutes by using the bomb, respectively. The results of this study were as follows : 1) The density was decreased with increasing the times and temperatures of steaming. 2) It was considered that the steaming treated specimen's higher shrinkage compared to control was due to change of composition and structure in cell wall. 3) The warpage of half edge grain specimen was decreased by high temperature steaming.

본 연구는 낙엽송(Larix Kaemferi Carr.)재를 이용하여 100℃부터 180℃까지의 고온영역에서 20℃ 간격으로 처리시간을 10분, 30분, 60분, 90분간으로 하여 처리조는 봄베를 사용하였다. 1) 고온수증기처리의 처리시간이 길고, 처리온도가 높을수록 밀도의 감소도 커졌다. 2) 밀도의 감소에도 불구하고 고온수증기처리재의 수축율이 control재와 비교하여 비슷하거나 높게 나타나는 것은 수증기처리에 의하여 세포벽 내부의 구성성분 및 구조변화에 의하여 야기된 것으로 판단된다. 3) 고온수증기처리에 의하여 추정목재의 틀어짐은 감소되었다.

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