• Monthly Korean Chicken
• /
• s.130
• /
• pp.92-93
• /
• 2006

'팜 오일'은 팜의 과육부에서 얻어진다. 또한 팜오일의 딱딱한 내과피 내의 핵(종자)에서는 팜핵유가 얻어지게 된다. 팜오일의 원산지는 자이레 등을 중심으로 한 아프리카 서부 열대지방이며, 현재는 아프리카, 말레이시아를 중심으로 한 동남아시아, 중남미 등에서 생육되고 있다. '팜 오일'의 종류에는 팜 오일, 팜 올레인, 팜 스테아린, 팜 커널 오일, 팜 커널 올레인, 팜 커널 스테아린의 여섯 가지로 나뉘는 데, 이중 '팜 올레인유'는 종려 나무과에 속한 야자나무의 열매 송이(bunches)에서 순수압착방식을 통해 위생적으로 추출된 순 식물성 천연오일이다.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2022.11a
• /
• pp.35-36
• /
• 2022

In order to supplement the flame-retardant performance of oil stain, which can prevent wooden buildings from contamination, (NH4)2HPO4, a phosphorus flame-retardant, was added to oil stain and applied for each type of plywood, and an experiment was conducted. The addition rate was set to 0-60%, but white powder appeared on the surface of plywood from 40% and thus it was impossible to experiment, so the maximum addition rate was selected as 30%. As a result of the experiment, acacia plywood had the best performance. As the rate of addition of the flame retardant increased, the remaining time and carbonization length of all plywood decreased, but the carbonization length of the MDF plywood was not met with the standards.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2023.11a
• /
• pp.29-30
• /
• 2023

Wood is a construction material that has the advantages of carbon dioxide storage ability, noise reflection, and eco-friendliness. In order to use wood for a long time, you must use wood-specific paint, which is called oil stain. Oil stain improves water resistance and moisture resistance, but has the disadvantage of being weak against fire. This is because the oil contained in the oil stain causes a chemical reaction, and this chemical reaction causes the oil stain to spontaneously ignite, igniting nearby combustible materials and causing frequent fires. To improve this, in this study, different flame retardants were mixed and added to oil stain to produce functional oil stain. In addition, we would like to apply it to wood to check glow time and carbonization area. As a result of the experiment, it shows the best performance when mixed at 30(15 + 15)(%) and added to oil stain. The remaining burn time is satisfied from 10% for all samples, and the carbonized area is satisfied when it is 30%.

• Journal of the Korean Wood Science and Technology
• /
• v.31 no.4
• /
• pp.81-90
• /
• 2003

In this study, we investigated the weathering properties of Korean Rhus lacquers containing tung oil and their potential use as exterior coatings. The finished lacquers were prepared with a raw Korean Rhus lacquer or refined Korean Rhus lacquer content of 10, 20, 30 and 40 wt.% (corresponding to ratios of 10/90, 20/80, 30/70 and 40/60 by weight of Korean Rhus lacquer/tung oil, respectively). The curing temperature of the prepared lacquer increased with increasing the content of the raw Korean Rhus lacquer. This increased curing temperature is related to higher proportion of hydroxyl groups in the prepared lacquer, due to the content of the raw Korean Rhus lacquer. In accelerated weathering testing, the changes in the gloss and contact angle of the prepared lacquers showed a similar trend to that of traditional exterior oil stain. In addition, the prepared lacquers containing tung oil showed greater discoloration than traditional exterior oil stain. However, the discoloration of the prepared lacquer with a raw Korean Rhus lacquer content of 40 wt.%, and that of the prepared lacquer with refined Korean Rhus lacquer contents of 30 wt.% and 40 wt.%, showed a similar trend to that of traditional exterior oil stain. Consequentially, these prepared lacquers showed a potential for being used as exterior coatings.

• Journal of Conservation Science
• /
• v.31 no.1
• /
• pp.13-20
• /
• 2015

Surface of the wooden cultural heritage has been protected from moisture by natural oils (such as perilla oil and tung oil), which accelerated degradation. But we can find seldom the research on the processes and performances of oil coatings. In this study, the water resistant performances by wood direction were compared to 3 types of natural oil and 2 types of oil stain, and the effect of additional indoor conditioning and temperature of oil were appraised in longitudinal direction. The natural oils block moisture about 79.2% comparing to the control in longitudinal direction. Especially the tung oil showed the outstanding water resistance about 90.5%. The water resistant performances decreased about 8.8% by additional indoor conditioning for 2 years. Heated oil improved the water resistance about average 5.0%.(Max. 9.6% with linseed oil).

• Journal of the KSME
• /
• v.31 no.4
• /
• pp.389-400
• /
• 1991

압정가공은 열간압정과 냉간압정으로 크게 나눌 수 있으며, 압정기와 피압정재의 종류에 따라 서도 분류한다. 열간압정에서는 알루미늄과 알루미늄합금을 제외하고는 종래에 오직 물만이 냉각겸 윤활제로 사용되어 왔다. 그러나 근년에 와서 열간압정에서도 윤활유를 사용하게 됨으 로서 롤(roll)의 수명연장, 전력소비량의 저감 및 사상(finishing) 강판의 표면품질향상등에 극히 유효하다는 것을 인식하게 되었다. 한편 냉각압정에서는 압정유를 사용해 온 것이 100년 가까이 되는 역사가 있고, 특히 과거 십 수년간에는 상당히 광범위하게 연구가 이루어져서, 많은 실적을 갖게 되었다. 예컨대, 석도원판으로 대표되는 박판압정에 있어서는 고속고압하에서 판의 형상 및 표면정쟁성 향상은 물론이고 저온(에너지 절감, 작업성 개선) 저농도사용(원단위감소)이 이루어 지고, 나아가 장수명(액의 오염이 적은 것)의 압정유가 개발되었다. 또한 마대강 압정에 있어 서는 고윤활이면서도 ECL(electric cleaning line)의 성략도 가능한 압정유 즉 밀크린시트(mill clean sheet) 압정유의 연구도 활발히 진행되고 있다. 압정유의 역할을 살펴보면 열간 또는 냉 간을 불문하고, 롤과 재료간의 감마작용이 주가 되지만 기타 실용적으로는 (1)냉각성 (2)판의 끝맺음(finishing)성 (3)선정선 (4)방장성,비부식성 (5) 내노화성 (6) 오일.스테인(oil stain) (7) 급 유성 (8)액관리성 (9)비수처리성 10) 안전위생 (11)경제성 등을 열거할 수 있다.

• Journal of the Korean Wood Science and Technology
• /
• v.33 no.4 s.132
• /
• pp.15-22
• /
• 2005

The acoustic properties of various coatings for stringed musical instruments made were investigated. The applied coatings were urethane topcoat, oil stain, natural varnish, cashew and UV-curable epoxy coating. Acoustic properties of coatings inferred from a resonance frequency and a damping measured by FFT analyzer and tan ${\delta}$ measured by DMTA. Acoustic properties from resonance frequency and damping were analyzed. Optimum coating for stringed instruments was determined by viscoelastic properties and acoustic properties of coating.

• Journal of the Korean Wood Science and Technology
• /
• v.34 no.1
• /
• pp.32-39
• /
• 2006

The acoustic properties of various coatings for stringed musical instruments made were investigated. The applied coatings were urethane topcoat, oil stain and UV-curable epoxy coating. Acoustic properties of coatings inferred from the elastic modulus and the shear modulus that ware calculated from a resonance frequency and a damping measured by FFT analyzer. The relationship between elastic modulus and density and the relationship between elastic modulus and shear modulus of coatings for stringed musical instruments ware investigated as a function of coating thickness.