Wood Research最新文献_第3页

EFFECT OF MATERIAL, ADHESIVE AND LOADING ON THE STIFFNESS OF WOODEN DOWEL JOINTS 材料、粘合剂和荷载对木榫连接刚度的影响

IF 1.3 4区农林科学

Wood Research Pub Date : 2023-12-21 DOI: 10.37763/wr.1336-4561/68.4.768780

Abdurrahman Karaman, Mehmet NURİ YILDIRIM

引用次数: 0

EFFECT OF ANATOMICAL STRUCTURE ON DIMENSIONAL STABILITY OF LOW MOLECULAR WEIGHT PHENOL-FORMALDEHYDE IMPREGNATED WOOD 解剖结构对低分子量酚醛浸渍木材尺寸稳定性的影响

IF 1.3 4区农林科学

Wood Research Pub Date : 2023-06-28 DOI: 10.37763/wr.1336-4561/68.3.425443

S. Augustina, W. Dwianto, Muhammad Adly Rahandi Lubis, R. Damayanti, Danang SUDARWOKO ADI, J. Malik, I. Wahyudi, W. Darmawan, P. Gérardin, S. D. Marbun, H. Isoda

{"title":"EFFECT OF ANATOMICAL STRUCTURE ON DIMENSIONAL STABILITY OF LOW MOLECULAR WEIGHT PHENOL-FORMALDEHYDE IMPREGNATED WOOD","authors":"S. Augustina, W. Dwianto, Muhammad Adly Rahandi Lubis, R. Damayanti, Danang SUDARWOKO ADI, J. Malik, I. Wahyudi, W. Darmawan, P. Gérardin, S. D. Marbun, H. Isoda","doi":"10.37763/wr.1336-4561/68.3.425443","DOIUrl":"https://doi.org/10.37763/wr.1336-4561/68.3.425443","url":null,"abstract":"This research deals with low molecular weight-phenol formaldehyde (LMW–PF) impregnation on sepetir (Sindora spp), nyatoh (Palaquium spp.), and pisang putih (Mezzettia spp.) woods to determine the effect of different anatomical structure on weight percent gain and dimensional stability improvement. The wood samples were impregnated using LMW–PF solutions with 7, 8, 9, 10, and 11% of concentrations (w/w), vacuum-pressured (–98 kPa, 15 min, 350 kPa, 4 h), and re-immersed in 80°C for 3 h. According to the findings, LMW–PF impregnation reduced coefficient of swelling by 9.64–29.95%, and increased anti-swelling efficiency by 12.24–29.91%. Additionally, the water absorption and thickness swelling reduced by 2.43–38.75% and 15.94–34.21%, respectively, indicating the improvement of dimensional stability. Microscopy and NIR analysis revealed the presence and reaction of LMW–PF within porous wood matrix. The effect of diverse anatomical structures caused complexity on LMW–PF impregnation. Sepetir-treated wood with fewer anatomical barriers resulted in better dimensional stability improvement than others.","PeriodicalId":23786,"journal":{"name":"Wood Research","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48415317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

EFFECTS OF PRESSING TEMPERATURE AND COMPRESSION RATIO ON DENSITY DISTRIBUTION AND HARDNESS OF SURFACE DENSIFIED POPLAR WOOD 压制温度和压缩比对表面致密杨木密度分布和硬度的影响

IF 1.3 4区农林科学

Wood Research Pub Date : 2023-06-28 DOI: 10.37763/wr.1336-4561/68.3.465476

Qiaofang Zhou, Dongdong Liang, Aokai Cheng, Xianju Wang, Dengyun Tu

{"title":"EFFECTS OF PRESSING TEMPERATURE AND COMPRESSION RATIO ON DENSITY DISTRIBUTION AND HARDNESS OF SURFACE DENSIFIED POPLAR WOOD","authors":"Qiaofang Zhou, Dongdong Liang, Aokai Cheng, Xianju Wang, Dengyun Tu","doi":"10.37763/wr.1336-4561/68.3.465476","DOIUrl":"https://doi.org/10.37763/wr.1336-4561/68.3.465476","url":null,"abstract":"Process parameters play an important role in wood surface densification. In this study, the poplar (Populus tomentosa Carr.) wood was heated on one side at 100℃, 150℃ and 180℃, and compressed in the radial direction with the speed of 10 mm/min. The initial thickness of the wood samples were 30 mm, 26 mm and 23 mm, and they were all compressed to 20 mm and resulting in three different compression ratios: 33.3%, 23.1% and 13.0%. When the surface densification completed, the density distribution and hardness of the densified and un-treated samples were measured and analyzed. Results show that the compressing temperature mainly decided the formation of the density distribution curve and the peak density increased with the increasing temperature; as the compression ratio increased, the peak density increased and the thickness of the densified zone broadened; the surface hardness was highly correlated with the density distribution which was affected by temperature and compression ratio, and as the peak density increased and the thickness of the densified broadened the hardness increased accordingly. Therefore, by optimizing the process parameters such as the compressing temperature and compression ratio could generate a targeted density distribution which has the desired hardness.","PeriodicalId":23786,"journal":{"name":"Wood Research","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45799899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

DETERMINATION OF UREA-FORMALDEHYDE RESIN CONTENT IN POPLAR FIBER BASED ON HYPERSPECTRAL TECHNIQUES 基于高光谱技术测定杨树纤维中脲醛树脂含量

IF 1.3 4区农林科学

Wood Research Pub Date : 2023-06-28 DOI: 10.37763/wr.1336-4561/68.3.488501

Chunmei Yang, Zanbin Zhu, Tongbin Liu, Bo Xue, Wen Qu, Tingting Wang

{"title":"DETERMINATION OF UREA-FORMALDEHYDE RESIN CONTENT IN POPLAR FIBER BASED ON HYPERSPECTRAL TECHNIQUES","authors":"Chunmei Yang, Zanbin Zhu, Tongbin Liu, Bo Xue, Wen Qu, Tingting Wang","doi":"10.37763/wr.1336-4561/68.3.488501","DOIUrl":"https://doi.org/10.37763/wr.1336-4561/68.3.488501","url":null,"abstract":"In this experiment, poplar fibers containing 0%, 2%, 4%, 6%, 8%, 10%, 12%, 14%, 16%, 18%, 20%, 25% and 30% of urea-formaldehyde resin were prepared. A model for the detection of urea-formaldehyde resin content in poplar fibers was established by the hyperspectral near-infrared imaging system combined with relevant algorithms. The spectral images of poplar fibers containing different contents of urea-formaldehyde (UF) resin were measured separately using hyperspectral imager. The results of four preprocessing methods, namely mean centering (MC), multiple scattering correction (MSC), standard normal variables (SNV) and first-order derivative (1-Der) were analyzed, and the optimal preprocessing method was selected as SNV. The band combinations with the highest correlation with the urea-formaldehyde resin content were compared and analyzed with the full-band model to establish the partial least squares regression (PLSR) model. The experimental results show that the hyperspectral imaging system combined with the corresponding algorithm can achieve rapid detection of UF resin content in poplar fibers, and the results of this study provide technical support and theoretical reference for determination of resin content in ultra-thin fiberboard production. The method is an innovative model for the determination of UF resin in wood fibers.","PeriodicalId":23786,"journal":{"name":"Wood Research","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47983739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

RELATIONSHIP BETWEEN WOOD ANATOMICAL FEATURES AND SURFACE ROUGHNESS CHARACTERISTICS 木材解剖特征与表面粗糙度特征的关系

IF 1.3 4区农林科学

Wood Research Pub Date : 2023-06-28 DOI: 10.37763/wr.1336-4561/68.3.455464

C. Kang, Kazuharu Hashitsume, E. Jang, H. Kolya

引用次数: 0

OPTIMISATION OF ENERGY CONSUMPTION IN PAPER PRODUCTION. REVIEW 优化纸张生产中的能源消耗。审查

IF 1.3 4区农林科学

Wood Research Pub Date : 2023-06-28 DOI: 10.37763/wr.1336-4561/68.3.600618

Š. Boháček, A. Pažitný, Stela Slámová

引用次数: 0

EFFECT OF WATER ABSORPTION ON THE MECHANICAL PROPERTIES OF SILANE-TREATED WOOD FLOUR POLYPROPYLENE COMPOSITES 吸水性对硅烷处理木粉-聚丙烯复合材料力学性能的影响

IF 1.3 4区农林科学

Wood Research Pub Date : 2023-06-28 DOI: 10.37763/wr.1336-4561/68.3.477487

D. Kiryakova, Antoniya Ilieva, Neli Simeonova

引用次数: 0

POSSIBILITY OF USING CRUDE AND EXPANDED VERMICULITE IN CEMENT-BONDED PARTICLEBOARD PRODUCTION 粗蛭石和膨胀蛭石用于水泥胶结刨花板生产的可能性

IF 1.3 4区农林科学

Wood Research Pub Date : 2023-06-28 DOI: 10.37763/wr.1336-4561/68.3.572581

U. Aras

{"title":"POSSIBILITY OF USING CRUDE AND EXPANDED VERMICULITE IN CEMENT-BONDED PARTICLEBOARD PRODUCTION","authors":"U. Aras","doi":"10.37763/wr.1336-4561/68.3.572581","DOIUrl":"https://doi.org/10.37763/wr.1336-4561/68.3.572581","url":null,"abstract":"The aim of this study is to investigate the effect of using vermiculite on the thermal, physical and mechanical properties of cement-bonded particleboards. For this purpose, single-layer cementitious particle boards with a final density of 1200 kg/m3 and a size of 550 x 550 x 10 mm were produced using 2 type vermiculites (crude and expanded) at three different ratios (5%, 10% and 15%). The produced boards were examined in terms of thermal (TGA/DTG), physical (moisture content, density, water absorption and thickness swelling), mechanical (modulus of rupture, modulus of elasticity, internal bond strength and screw withdrawal resistance) properties. According to the TGA results, using both types of vermiculite caused an increase in cement hydration products in the boards and increased the thermal resistance. While the use of vermiculite did not significant effect on the density and moisture content of the boards, it increased the dimensional stability of the boards. The values of modulus of rupture and modulus of elasticity increased when the low amount of vermiculite was added. However, with the use of vermiculite in the boards, there was a decrease in the internal bond strength and screw withdrawal resistance values in general. All boards produced using vermiculite met the values specified in EN standards.","PeriodicalId":23786,"journal":{"name":"Wood Research","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46573902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

FRACTURE TESTING OF EDGE-NOTCHED TIMBER BEAMS WITH DIFFERENT GROWTH RING ORIENTATIONS 不同生长环取向的边缘切口木梁的断裂试验

IF 1.3 4区农林科学

Wood Research Pub Date : 2023-06-28 DOI: 10.37763/wr.1336-4561/68.3.558571

Tamás Király, Z. Karácsonyi

引用次数: 1

CHARACTERIZATION OF THE BURNING OF ORIENTED STRAND BOARDS EXPOSED TO FLAME 定向刨花板在火焰中的燃烧特性

IF 1.3 4区农林科学

Wood Research Pub Date : 2023-06-28 DOI: 10.37763/wr.1336-4561/68.3.547557

P. Rantuch, J. Martinka, Tomáš Štefko, Igor Wachter, Mária Zuzana Bednáriková

引用次数: 0