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Vacuum Pressure Treatment of Water-Soluble Melamine Resin Impregnation for Improvement of Dimensional Stability on Softwoods

목재의 치수안정성 개선을 위한 진공가압 멜라민 수지함침처리

  • Oh, Seung-Won (Department of wood Science & Technology, Institute of Agriculture Science & Technology, Chonbuk National University) ;
  • Park, Hee-Jun (Department of Housing Environmental Design, Chonbuk National University)
  • 오승원 (전북대학교 목재응용과학과, 농업과학기술연구소) ;
  • 박희준 (전북대학교 주거환경학과)
  • Received : 2015.01.07
  • Accepted : 2015.02.17
  • Published : 2015.05.25

Abstract

To measure the dimensional stability of three softwoods by vacuum pressurization of water soluble melamine-formaldehyde (MF) resin impregnation process, properties of resin treated compressed woods (compregs) were measured after impregnating the water soluble MF resin into three coniferous wood species for different impregnation times and resin concentrations. As the resin concentration was higher and impregnation time was longer, coefficients of volumetric shrinkage and anti-volumetric swelling efficiency increased, but coefficients of volumetric swelling, anti-volumetric swelling efficiency and absorption decreased. Also, weight percent gain increased remarkably as the resin concentration was high, but there was no uniform relationship with impregnation time.

진공가압 수지함침 처리에 의한 목재의 치수안정화 정도를 측정하기 위하여 침엽수 3수종에 수용성 멜라민 수지를 수지농도와 처리시간별로 처리한 후, 수지함침 열압축목재(compreg)를 제조한 다음 치수안정성 개선효과를 검토하였다. 수지농도가 높고 처리시간이 길수록 용적 수축률과 항용적 팽윤율은 증가하였으나, 용적 팽윤율, 항용적 수축률 및 흡수성은 감소하였다. 또한 중량 증가율은 수지의 농도가 높을수록 현저히 증가하였으나 처리시간과는 일정한 관계가 없었다.

Keywords

References

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Cited by

  1. Comparison of Dynamic Sorption and Hygroexpansion of Wood by Different Cyclic Hygrothermal Changing Effects vol.44, pp.2, 2016, https://doi.org/10.5658/WOOD.2016.44.2.191
  2. Dimensional Responses of Wood Under Cyclical Changing Temperature at Constant Relative Humidity vol.43, pp.5, 2015, https://doi.org/10.5658/WOOD.2015.43.5.539
  3. Vacuum Pressure Treatment of Water-Soluble Melamine Resin Impregnation for Improvement of Mechanical Property, Abrasion Resistance and Incombustibility on Softwood vol.43, pp.6, 2015, https://doi.org/10.5658/WOOD.2015.43.6.792