Comparison of protein-based adhesive resins for wood composites |
| |
Authors: | In Yang Monlin Kuo Deland J. Myers Anbin Pu |
| |
Affiliation: | (1) Department of Natural Resource Ecology and Management, Iowa State University, Ames, IA 50011-1021, USA;(2) Department of Food Science and Human Nutrition, Iowa State University, Ames, IA 50011-1021, USA;(3) College of Material Science and Engineering, Northeast Forestry University, Harbin, 150040, PR China;(4) Present address: Program in Environmental Material Science, Department of Forest Products, Seoul National University, San 56-1 Shillim-Dong, 151-921 Seoul, Korea |
| |
Abstract: | The search for new value-added uses for oilseed and animal proteins led us to develop protein-based wood adhesives. Low-fat soy and peanut flours and blood meal were hydrolyzed in an alkaline state, and PF-cross-linked protein resins were formulated by reacting the protein hydrolyzates with phenol-formaldehyde (PF) in solid-tosolid ratios ranging from 70% to 50% hydrolyzates and 30% to 50% PF. Physical properties of medium density fiberboard (MDF) bonded with protein-based phenolic resins were compared to those of boards bonded with ureaformaldehyde (UF) and PF resins, and flakeboard bonded with soy protein-based phenolic resin was compared to PF-bonded board. As MDF binders, adhesive properties of protein-based phenolic resins depended upon protein content of proteinacious materials. MDF board bonded with blood-based phenolic resin was comparable to PF-bonded board and met the requirements for exterior MDF. Boards bonded with soy-protein-based phenolic resin met requirements for interior MDF, while peanut-based phenolic failed to meet some of the requirements. Flakeboard bonded with soy-protein-based phenolic resins was inferior to PF-bonded board but outperformed PF-bonded board in accelerated aging tests. Although they exhibit a slow curing rate, the cost effectiveness and superior dimensional stability of protein-based phenolic resins may make them attractive for some uses. |
| |
Keywords: | Wood adhesive Protein-based phenolic adhesives Phenol-formaldehyde Fiberboard Flakeboard |
本文献已被 SpringerLink 等数据库收录! |
|