林业科学2011，Vol.47Issue(9)：129-134,6.
利用苯酚液化大豆粉制备耐水性木材胶黏剂
Water Resistant Wood Adhesives Prepared with Phenolated Soy Flours
摘要
Abstract
By means of phenol liquefaction ( or phenolation) in the presence of sulfuric/phosphoric acids as catalyst, the soy flour translated into raw material for water-resistant wood adhesive. The techniques of GPC, HPLC, FTIR and plywood evaluation were employed to characterize the phenolated soy flours ( PSF) and the PSF-formaldehyde ( PSFF) adhesives. It indicated that more than 90% of soy flour translated into phenolated resultants with molecular weight ranged 250 -7 250 after the soy flour liquefied at 130 - 150 'C for90min with phenol/soy flour ratio ranged from 3/1 to 2/1, and some phenol was bonded to soy flour via 1 ,4- and 1,2- substitutions after liquefaction. Phenolation not only unfolded the globular structure of soy protein but also increased the quantity of reactive groups in PSF, therefore a low-free-formaldehyde adhesive with good bond strength and water resistance was prepared with PSF. The plywood panels manufactured with the PSFF adhesives resulted in 28 h boiling-dry-boiling wet bond strength from 1. 24 to 1. 81 Mpa. The phenol/soy flour ratio had various effects on the many properties of phenolated soy flour and PSFF adhesives, and the PSFF adhesive prepared with phenol/soy flour ratio of 3 had the best bond strength.关键词
豆粉/苯酚液化/木材胶黏剂/表征Key words
soy flour/ phenol liquefaction/ wood adhesive/ characterization分类
化学化工引用本文复制引用
高振华,顾继友..利用苯酚液化大豆粉制备耐水性木材胶黏剂[J].林业科学,2011,47(9):129-134,6.基金项目
哈尔滨市攻关(招标)项目(2008AA4BG006). （招标）
