黑线晒图纸涂布液配制技术及涂布工艺的研究

本文介绍了一种重氮盐氨显影干法黑线晒图纸涂布液的配制技术及涂布工艺。目前,我国生产的晒图纸,多为蓝线晒图纸,黑线晒图纸有少量进口。经鉴定,认为本项研究在国内处于领先地位,对我国晒图纸的更新换代具有重要作用。     

Ecoeffective production of timber

Abstract

Development in surface mould growth on painted/unpainted wooden claddings and acting climatic factors were investigated over a period of 3 years. Eight wood substrates, including modified, preservative-treated and untreated wood, were tested in combination with three types of paint: (1) water-borne alkyd modified acrylic paint without fungicide; (2) solvent-borne alkyd paint without fungicide; and (3) ICP (internal comparison product). One set of samples was exposed unpainted. The samples were tested according to a modified version of EN 927-3. A logistic regression model was fitted to the data. The degree of mould growth varied with exposure time, coating typology, wood substrate, temperature and relative humidity. Exposure time and coating typology contributed most to the model. After 3 years of outdoor exposure unpainted panels and panels coated with solvent-borne paint without fungicide had more mould growth than panels coated with ICP and water-borne paint without fungicide. Unpainted oil/copper–organic preservative-treated claddings had higher resistance to mould growth than other unpainted wood substrates. Coated untreated pine and coated acetylated pine were more susceptible to mould growth than other coated wooden substrates.     

几种林木种子丸化包衣粘着剂的筛选

对桃胶粉、阿拉伯树胶、羧甲基纤维素钠、保水剂及107胶的基本状态、粘度值、pH值、平均颗粒强度等物理性质进行测定的结果表明：桃胶粉是理想的种子包衣粘着剂;阿拉伯树胶和羧甲基纤维素钠亦可作为种子包衣粘着剂,但均有一定缺陷;保水剂和107胶不适宜作为种子包衣粘着剂。     

包衣大豆种子贮藏方法的研究

“皖豆13号”大豆包衣种子，分别经日晒和烘干两种方法处理，水分降至10%以下，密封贮藏于0-5℃低温下12个月，种子的萌发均不受影响，烘干处理种子的活力指数无显著变化，日晒处理种子的活力指数极显著提高。根据本研究结果，认为包衣大豆种子经适度降水后低温贮藏。可以保持种用价值，降水方法以日晒为宜，低温（0-5℃）贮藏的最佳水分为10%左右。     

复合型小麦种衣剂对小麦幼苗生长及某些生理特性的影响

采用自制复合型小麦种衣剂对小麦种子进行包衣处理，并研究了其对小麦幼苗生长及某些生理特性的影响。结果表明：该种衣剂不影响小麦的出苗，并能提高小麦种子的出苗率和a-淀粉酶活性，降低幼苗株高，增加干物重、根冠比及幼苗健壮度，提高幼苗叶绿素含量、光合速率、根系活力和SOD、CAT、POD的活性，对小麦种子萌发、幼苗的生长和抗性的提高具有明显促进作用。