目的明确5种市售常用植物制香黏合剂的基原物种及其制成沉香线香的性能。方法收集市售常用植物制香黏合剂,利用DNA条形码技术进行基原鉴定;采用传统制香方法,选用5种黏合剂制作沉香线香(规格φ:1. 5 mm,L:18 cm),对其颜色、黏性、燃烧...目的明确5种市售常用植物制香黏合剂的基原物种及其制成沉香线香的性能。方法收集市售常用植物制香黏合剂,利用DNA条形码技术进行基原鉴定;采用传统制香方法,选用5种黏合剂制作沉香线香(规格φ:1. 5 mm,L:18 cm),对其颜色、黏性、燃烧时间、燃烧速率、香味及灰分重量等指标进行研究。结果 5种常用植物黏合剂基原鉴定为:光榆(Ulmus glabra),潺槁树[Litsea glutinosa (Lour.) C. B. Rob]、普文楠(Phoebe puwenensis Cheng)、锈毛润楠[Machilus balansae (Airy Shaw)F. N. Wei and S. C. Tang]和恩德樟属(Endlicheria sp.)植物;线香性能研究表明,楠木黏粉的黏性最好、香味干扰最小,其制成的沉香线香燃烧时间最长,灰分重量最轻;燃烧性能研究表明,同等条件下,线香的直径越大,燃烧时间越长。结论明确了5种常用植物黏合剂的基原物种,且楠木黏粉制香性能最优;线香燃烧时间与重量、长度及直径成正比。展开更多
This article presents the first applied results of using citric acid in combinations with a melamine-urea-formal-dehyde(MUF)resin for bonding wood veneers.The chemical reactions involved are shown based on a MALDI ToF...This article presents the first applied results of using citric acid in combinations with a melamine-urea-formal-dehyde(MUF)resin for bonding wood veneers.The chemical reactions involved are shown based on a MALDI ToF analysis of the reaction of the MUF resin with citric acid.The preliminary results of the physical and mechanical properties of the LVL prepared are also presented.Veneers from Populus sp were used to manufacture 5-layer laminated veneer lumber(LVL)of small dimensions.Five combinations of the amount of citric acid,MUF spread rate and pressing parameters were tested.LVL bonded with 20%of citric acid+100 g/m^(2)of MUF,hot-pressed using a 3-step process with maximum 1.5 MPa of pressure yielded the board with better dimensional stability and mechanical properties.It could be concluded that citric acid in combination with MUF can be used for bonding wood veneer and the research should be continued to study further the parameters involved and to enhance the results.展开更多
文摘目的明确5种市售常用植物制香黏合剂的基原物种及其制成沉香线香的性能。方法收集市售常用植物制香黏合剂,利用DNA条形码技术进行基原鉴定;采用传统制香方法,选用5种黏合剂制作沉香线香(规格φ:1. 5 mm,L:18 cm),对其颜色、黏性、燃烧时间、燃烧速率、香味及灰分重量等指标进行研究。结果 5种常用植物黏合剂基原鉴定为:光榆(Ulmus glabra),潺槁树[Litsea glutinosa (Lour.) C. B. Rob]、普文楠(Phoebe puwenensis Cheng)、锈毛润楠[Machilus balansae (Airy Shaw)F. N. Wei and S. C. Tang]和恩德樟属(Endlicheria sp.)植物;线香性能研究表明,楠木黏粉的黏性最好、香味干扰最小,其制成的沉香线香燃烧时间最长,灰分重量最轻;燃烧性能研究表明,同等条件下,线香的直径越大,燃烧时间越长。结论明确了5种常用植物黏合剂的基原物种,且楠木黏粉制香性能最优;线香燃烧时间与重量、长度及直径成正比。
基金financed under the scheme of Laboratory of Excellence ARBRE by the French Agence Nationale de la Recherche(ANR).
文摘This article presents the first applied results of using citric acid in combinations with a melamine-urea-formal-dehyde(MUF)resin for bonding wood veneers.The chemical reactions involved are shown based on a MALDI ToF analysis of the reaction of the MUF resin with citric acid.The preliminary results of the physical and mechanical properties of the LVL prepared are also presented.Veneers from Populus sp were used to manufacture 5-layer laminated veneer lumber(LVL)of small dimensions.Five combinations of the amount of citric acid,MUF spread rate and pressing parameters were tested.LVL bonded with 20%of citric acid+100 g/m^(2)of MUF,hot-pressed using a 3-step process with maximum 1.5 MPa of pressure yielded the board with better dimensional stability and mechanical properties.It could be concluded that citric acid in combination with MUF can be used for bonding wood veneer and the research should be continued to study further the parameters involved and to enhance the results.
