Durability Analysis of Structural Oriented Strandboard Made with Borate-Modified Wood Flakes

硼酸盐改性木片结构定向刨花板的耐久性分析

• 批准号: 0080248
• 负责人: Qinglin Wu
• 金额: $ 15万
• 依托单位: Louisiana State University Agricultural Center
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-07-15 至 2004-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0080248&HistoricalAwards=false
• 关键词: Durability; Analysis; Structural; Oriented; Strandboard

Oriented Strandboard (OSB) is a structural wood composite widely used in house construction as sheathing, flooring, and I-joist materials. As a biological material, OSB is subject to attack from Formosan termites, which nationwide cause over $2 billion a year in damages to homes. Borate-based systems have been shown to provide adequate termite protection for OSB. However, the addition of the chemical often leads to a significant reduction in the strength and durability of OSB. The goal of this project is to pursue an overall understanding of the influence of borate addition on OSB's strength and long-term durability. The specific objectives are: (1) To develop pressing technology for manufacturing OSB with borate-modified flakes; (2) To determine the effects of borate addition on panel stiffness, strength, and stability; (3) To determine contents and micro-distribution of zinc-borate within wood flakes; and (4) To measure and model the creep behavior of the OSB. In this work, borate-modified OSB panels will be manufactured. Panel strength, chemical content and distribution, swelling and creep properties will be determined. Mathematical models will be developed to describe observed creep and durability behavior. The work will lead to the development of processing technology and fundamental durability information information for the manufacture of durable OSB with sound biological performance.

定向刨花板 (OSB) 是一种结构木质复合材料，广泛应用于房屋建筑中，作为护套、地板和工字托梁材料。 作为一种生物材料，OSB 容易受到台湾白蚁的攻击，这种白蚁每年在全国范围内造成超过 20 亿美元的房屋损失。基于硼酸盐的系统已被证明可以为 OSB 提供足够的白蚁保护。然而，化学物质的添加通常会导致 OSB 的强度和耐久性显着降低。 该项目的目标是全面了解添加硼酸盐对 OSB 强度和长期耐用性的影响。 具体目标是：（1）开发硼酸盐改性定向刨花板压制技术； (2) 确定硼酸盐添加对面板刚度、强度和稳定性的影响； (3)测定木片中硼酸锌的含量和微观分布； (4) 测量 OSB 的蠕变行为并对其进行建模。 在这项工作中，将制造硼酸盐改性定向刨花板面板。 将测定面板强度、化学含量和分布、膨胀和蠕变特性。 将开发数学模型来描述观察到的蠕变和耐久性行为。 这项工作将促进加工技术和基本耐久性信息的发展，用于制造具有良好生物性能的耐用定向刨花板。