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

这项提案寻求为位于俄勒冈州立大学(OSU)的木质复合材料中心(WBC)提供资金。基础研究的资金申请是由NSF批准的申请授权的，NSF 11-570。征集邀请研究所/大学合作研究中心提交支持行业定义的基础研究的建议。这个项目将测试一个假设，即木材粘合剂抵抗水入侵的降解能力取决于树脂对木材细胞壁的渗透。该项目建议在3D和多个尺度上定量测量胶粘剂渗透率，然后将结果与胶粘剂粘接性能相关联。需要多个空间尺度的分析来检测湿气引起的粘结剂变形以及预聚体与细胞壁的相互作用。这一努力是解决木质复合材料长期耐久性问题的根本途径，它是对由I/UCRC for Wood-Based Composites(WBC)赞助的一个正在进行的研究项目的补充。拟议的研究将支持更好的木质复合材料的开发，并直接帮助木质复合材料和粘合剂的制造商。这项研究的影响将通过以下方式实现：WBC行业成员的直接参与，分发给WBC成员的技术报告，在技术期刊和面向更广泛的科学技术受众的会议记录上发表文章，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，招生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，拟议项目的结果将消除关于细胞壁渗透对木材胶粘剂耐湿性影响的猜测，并为新的胶粘剂配方提供指导，以提高抗湿性或降低胶粘剂成本。

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.