I/UCRC FRP: Multi-scale investigation of adhesive bond durability

该提案旨在为位于俄勒冈州州立大学（OSU）的木基复合材料中心（WBC）提供资金。基础研究的资金申请由NSF批准的招标（NSF 11-570）授权。征集邀请I/UCRC提交支持行业定义的基础研究的提案。本项目将检验木材-胶粘剂结合抵抗由于水侵入而降解的能力取决于树脂渗透到木材细胞壁中的假设。该项目建议在3D和多个尺度上定量测量粘合剂渗透，然后将结果与粘合剂粘合性能相关联。多个空间尺度的分析是必要的，以检测水分引起的变形的粘合剂债券和相互作用的预聚物与细胞壁。这项工作是解决木质复合材料耐久性长期存在的问题的基本方法，它补充了I/UCRC为木质复合材料（WBC）赞助的正在进行的研究项目。拟议的研究将支持更好的木材复合材料的开发，并直接帮助木材复合材料和粘合剂的制造商。研究的影响将通过以下方式实现：WBC工业成员的直接参与，向WBC成员分发技术报告，在技术期刊和会议记录上向更广泛的科学和技术受众发表，以及纳入大学课程和短期课程。学生参与研究是WBC的一个重点，招聘工作高度重视将妇女和代表性不足的群体纳入STEM学科。如果成功的话，拟议项目的结果将消除有关细胞壁渗透对木材粘合剂耐湿性影响的猜测，并为新的粘合剂配方提供指导，以提高耐湿性或降低粘合剂成本。

This proposal seeks funding for the Center for Wood Based Composites (WBC) located at the Oregon State University (OSU). Funding Requests for Fundamental Research are authorized by an NSF approved solicitation, NSF 11-570. The solicitation invites I/UCRCs to submit proposals for support of industry-defined fundamental research. This project will test the hypothesis that the ability of a wood-adhesive bond to resist degradation due to water intrusion is dependent on penetration of the resin into the cell walls of wood. The project proposes to quantitatively measure adhesive penetration in 3D and in multiple scales, and then correlate the results with adhesive bond performance. Multiple spatial scale of analysis is needed to detect moisture-induced deformation of adhesive bonds and interaction of pre-polymer with the cell wall. This effort is a fundamental approach to solving the long-standing problem of durability of wood-based composites and it compliments an ongoing research project sponsored by the I/UCRC for Wood-Based Composites (WBC). The proposed research will support the development of better wood composite materials and directly assist manufacturers of wood composites and adhesives. The impact of the research will be realized through direct involvement of the industry members of the WBC, technical reports to be distributed to the WBC members, publication in technical journals and conference proceedings to a broader science and technology audience, as well as inclusion in college courses and short courses. Student involvement in research is a point of emphasis for the WBC, and recruitment efforts place high priority on inclusion of women and underrepresented groups in STEM disciplines. If successful, results from the proposed project will remove speculation concerning influence of cell wall penetration on moisture resistance of adhesive bonds in wood and provide guidance for new adhesive formulation to improve moisture resistance or reduce adhesive costs.