Annals of WULS, Forestry and Wood Technology最新文献_第5页

Effect of thermomechanical modification of Scots pine (Pinus sylvestris L.) wood on machine sanding efficiency 松木热机械改性对机械磨砂效率的影响

Annals of WULS, Forestry and Wood Technology Pub Date : 2022-07-25 DOI: 10.5604/01.3001.0016.0856

K. Szymanowski, Daniel Gruszczyński

引用次数: 0

Moisture influence on solid wood bonded with modified starch 水分对改性淀粉粘接实木的影响

Annals of WULS, Forestry and Wood Technology Pub Date : 2022-07-25 DOI: 10.5604/01.3001.0016.0501

Katarzyna Bartoszuk, G. Kowaluk

{"title":"Moisture influence on solid wood bonded with modified starch","authors":"Katarzyna Bartoszuk, G. Kowaluk","doi":"10.5604/01.3001.0016.0501","DOIUrl":"https://doi.org/10.5604/01.3001.0016.0501","url":null,"abstract":"Moisture influence on solid wood bonded with modified starch. A growing and developing population is contributing to the ever-increasing global warming, which is caused, among other things, by the heavy use of chemicals. Most of them are crude oil-based, which is a non-renewable source. That is why the population tries to find organic substitutes in every area, even in the wood industry. Here, the most common and popular binders - amine resins, are subjected in research to partial or full replacement by more natural binders, non-formaldehyde, made of renewable raw materials, preferably plant-based. In this project, the studies were carried out on the possibility of starch-based glue application in wood bonding and its effect on glued birch wood (Betula L.) under various environmental storage conditions of bonded samples. The results show, that the samples at room temperature and normal humidity, as well as another – additionally dried, have a very similar shear strength. In-wood damages, on the other hand, are much more varied. The research also included moistened samples, which gave poorer results. Based on the results, it can be concluded, that modified starch is a very good organic glue, that can potentially replace some chemical products in certain applications.\u0000\u0000","PeriodicalId":8020,"journal":{"name":"Annals of WULS, Forestry and Wood Technology","volume":"91 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83938884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Strength properties of furniture corner joints constructed with different wooden connectors and wood-based materials 不同木连接件及木基材料构成的家具角接缝强度特性

Annals of WULS, Forestry and Wood Technology Pub Date : 2022-07-25 DOI: 10.5604/01.3001.0016.0489

K. Śmietańska, M. Mielczarek

{"title":"Strength properties of furniture corner joints constructed with different wooden connectors and wood-based materials","authors":"K. Śmietańska, M. Mielczarek","doi":"10.5604/01.3001.0016.0489","DOIUrl":"https://doi.org/10.5604/01.3001.0016.0489","url":null,"abstract":"Strength properties of furniture corner joints constructed with different wooden connectors and wood-based materials. The aims of this study were to determine the influence of the type of invisible wooden connectors on the strength in glued corner joints for chipboard and MDF, the most popular boards in box furniture. Three variants of connectors arrangement were considered: variant I - with the use of 4 wood grooven beech dowels, Variant II - with the use 2 beech Domino pins, Variant III - connectors mixed arrangement. Experiment results indicated that samples prepared using joining with dowels provided the highest strength values of all variants (F=1169 N for MDF panel, F= 617 for chipboard panel). Moreover, it has been observed that the corner connection with Domino pins is the type of connection with the lowest strength. It is worth noting that the above tendency was observed in both types of wood-based panels. The influence of the material also turned out to be a statistically significant factor in the analysis of joint strength. The use of MDF panel increased the strength values ,by 47% of the dowel joint, by 36% of the Domino pins and 34% of the connectors mixed arrangement, compared to their use in chipboard.\u0000\u0000","PeriodicalId":8020,"journal":{"name":"Annals of WULS, Forestry and Wood Technology","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81866592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Post-extraction birch bark residues as a potential binder in particleboards 提取后的桦树皮残留物作为刨花板的潜在粘合剂

Annals of WULS, Forestry and Wood Technology Pub Date : 2022-07-25 DOI: 10.5604/01.3001.0016.0490

Aleksandra Jeżo, Anita Wronka

{"title":"Post-extraction birch bark residues as a potential binder in particleboards","authors":"Aleksandra Jeżo, Anita Wronka","doi":"10.5604/01.3001.0016.0490","DOIUrl":"https://doi.org/10.5604/01.3001.0016.0490","url":null,"abstract":"Post-extraction birch bark residues as a potential binder in particleboards. Nowadays, in the wood-based composites industry, aspects such as ecology and joining the current circular economy play a very important role. However, user safety is also very important. Formaldehyde is one of the hazardous substances which, if emitted too high, can harm human health. Unfortunately, binders containing formaldehyde still reign supreme in the wood-based panels' industry. Therefore, this paper concerns the possibility of using post-extraction residues obtained during the extraction of suberinic acid, as a formaldehyde-free and ecological binder in the production of particleboards. The main component, suberinic acid, is a colorless, crystalline solid used in the synthesis of drugs and the production of plastics. The aim of the research was to answer the question: since suberinic acid itself is a good binder in the production of particle boards, as described in other publications, it is worth checking whether the post-extraction residues also have similarly good properties of joining particles in particle boards, depending on the size of the wood particles? In addition, the use of post-extraction residues of bark, and thus the elimination of synthetic adhesives in the wood-based composites production process, allows the reuse of wood raw material, which fits perfectly with the idea of upcycling. The tests showed that using post-extraction residues of birch bark, using 10% and 20% resination, the requirements of the EN 312: 2010 standard were met only in the case of the modulus of elasticity for boards made of the largest wood particles used in the tests. The resination and the size of wood particles contributed to the improvement of the properties of the tested boards.\u0000\u0000","PeriodicalId":8020,"journal":{"name":"Annals of WULS, Forestry and Wood Technology","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90685034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

The influence of selected factors on the strength of angle joints of frame elements 选取的因素对框架单元角节点强度的影响

Annals of WULS, Forestry and Wood Technology Pub Date : 2022-07-25 DOI: 10.5604/01.3001.0015.9367

Kamil Rybinski, P. Borysiuk

引用次数: 1

Wettability of the surface of bacterial cellulose film modified with the ion implantation 离子注入改性细菌纤维素膜表面的润湿性

Annals of WULS, Forestry and Wood Technology Pub Date : 2022-07-25 DOI: 10.5604/01.3001.0015.9369

I. Betlej, M. Barlak, J. Wilkowski, Z. Werner, J. Zagórski, Karolina Lipska, P. Boruszewski

引用次数: 2

Influence of thermal modification in nitrogen atmosphere on the gloss of black poplar (Populus nigra L.) 氮大气热改性对黑杨光泽度的影响

Annals of WULS, Forestry and Wood Technology Pub Date : 2022-04-30 DOI: 10.5604/01.3001.0016.0191

O. Bytner, A. Laskowska, M. Drożdżek, J. Zawadzki

{"title":"Influence of thermal modification in nitrogen atmosphere on the gloss of black poplar (Populus nigra L.)","authors":"O. Bytner, A. Laskowska, M. Drożdżek, J. Zawadzki","doi":"10.5604/01.3001.0016.0191","DOIUrl":"https://doi.org/10.5604/01.3001.0016.0191","url":null,"abstract":"Influence of thermal modification in nitrogen atmosphere on the gloss of black poplar (Populus nigra L.). Heat treatment of wood is a process to which improve mechanical and physical properties. During this treatment is observed changes aesthetic properties of wood among others gloss. The aim of this research was to conduct the influence of time and temperature on surface gloss of black poplar wood (Populus nigra L.). Wood was modified by heat treatment process in nitrogen atmosphere in temperaturę from 160 °C to 220 °C, and during the following time periods 2 h - 8 h. Under the influence of modification Surface of modified wood change the gloss of black poplar wood. There was correlation between temperaturę and gloss changing and longer time of treatment. In temperaturę 220 °C decrease og gloss was 45 % for radial section and 52 % for tangential section. Influence of time and temperature on modified black poplar wood was different and depend on section. Temperature of modification was in 20 % accountable for gloss change on radial section and in 38 % for gloss change on tangential section. Influence of time during the proces was much smaller then temperaturę parameters and was 3 % and 5 % respectively for radial and tangential section.\u0000\u0000","PeriodicalId":8020,"journal":{"name":"Annals of WULS, Forestry and Wood Technology","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81400948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The importance of kitchen furniture ergonomics for people with disabilities 厨房家具人体工程学对残疾人的重要性

Annals of WULS, Forestry and Wood Technology Pub Date : 2022-04-30 DOI: 10.5604/01.3001.0015.8702

J. Biernacka, Krzysztof Niedzielski, P. Beer

引用次数: 0

Lightweight particleboards - manufacturing modification using a blowing agent from the group of bicarbonates 轻质刨花板-使用碳酸氢盐组中的发泡剂进行制造改性

Annals of WULS, Forestry and Wood Technology Pub Date : 2022-04-30 DOI: 10.5604/01.3001.0015.8935

D. Bednarczyk, P. Boruszewski

引用次数: 1

Investigation of round Scots pine wood WC01 class using X-ray computer tomography 圆形苏格兰松木WC01级的x射线计算机断层扫描研究

Annals of WULS, Forestry and Wood Technology Pub Date : 2022-04-30 DOI: 10.5604/01.3001.0016.0487

Patrycja Zatoń, P. Kozakiewicz, P. Mańkowski

引用次数: 0