Implementation of new wood preservatives

新型木材防腐剂的应用

• 批准号: 567437-2021
• 负责人: He, Quan
• 金额: $ 17.21万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=721822
• 关键词: Implementation; new; wood; preservatives

Proper wood treatment is essential for extending the service life of wood products, particularly for outdoor applications. The most common approach for preservation is a pressure treatment process, in which wood preservative chemicals are forced to penetrate the cellular structure of the wood, forming a barrier against weathering and bio-deterioration. Due to the growing environmental concerns and increasingly strict governmental regulations, Stella-Jones Inc., a leading North American manufacturer of treated wood products, is pursuing to develop less hazardous preservatives to replace currently used ones to minimize the impact of the treatment processes on the environment. The objective of the project is to implement two new environmentally friendly preservatives, iso-thiazolone, 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one (DCOI) and micronized copper azole (MCA) at commercial scale. All issues associated with the application of the two preservatives will be addressed, including new formulation development, treating process optimization, efficacy test of DCOI and MCA against wood decay fungi on Canadian wood species as well as the stability of two preservatives in both treating and storage vessels. The anticipated outcomes will fill the knowledge gaps in the commercialization of DCOI and MCA' applications in wood treatment, and provide a greener and optimized treating processes with minimum leaching and odor releasing. These new knowledge and protocols will help Stella-Jones develop and implement new and more environmentally friendly preservatives, extend the application of such preservatives to the whole wood treatment industry, most importantly help government establish new guidelines and policies, all of which are extremely important to Canada. Achieving such goals will also position Canada as a leader in the world for mindful environment protection.

适当的木材处理对于延长木制品的使用寿命至关重要，特别是对于户外应用。最常见的保存方法是压力处理过程，在这个过程中，木材防腐剂被强迫渗透到木材的细胞结构中，形成一道屏障，防止风化和生物退化。由于日益增长的环境问题和日益严格的政府法规，北美领先的木材处理产品制造商Stella-Jones Inc.正在寻求开发危害较小的防腐剂来取代目前使用的防腐剂，以将处理过程对环境的影响降至最低。该项目的目标是在商业规模上实现两种新的环境友好防腐剂：异噻唑酮、4，5-二氯-2-正辛基-4-异噻唑啉-3-酮(DCOI)和微粉化铜唑(MCA)。将讨论与这两种防腐剂应用相关的所有问题，包括新配方开发、处理工艺优化、DCOI和MCA对加拿大木材树种上木材腐烂真菌的效力测试以及两种防腐剂在处理和储存容器中的稳定性。预期成果将填补DCOI和MCA在木材处理中的应用商业化方面的知识空白，并提供更环保、更优化的处理工艺，将浸出和气味释放降至最低。这些新的知识和协议将帮助Stella-Jones开发和实施更环保的新防腐剂，将此类防腐剂的应用扩展到整个木材处理行业，最重要的是帮助政府建立新的指导方针和政策，所有这些对加拿大都非常重要。实现这些目标还将使加拿大成为世界上注重环境保护的领导者。