期刊论文

中文

林业工程学报

2096-1359

2016

1

1

21-24

10.13360/j.issn.2096-1359.2016.01.004

国家林业公益性行业科研重大专项项目（201304504）；

本校为第一机构

采用水性高分子-异氰酸酯(API)胶黏剂对含有木节的兴安落叶松(Larix gmelinii)层板按照工程胶合木的胶合工艺进行常温加压胶合,探讨木节及其大小对兴安落叶松工程胶合木胶合性能的影响.通过对试件进行胶缝剪切强度试验和浸渍剥离与煮沸剥离试验,发现节子对胶缝常态剪切强度、木破率、浸渍剥离率和煮沸剥离率均有显著的影响,随着木节直径的增大其胶缝剪切强度和木破率可下降40％和67％以上,浸渍二次总剥离率和煮沸二次总剥离率可增大至16％和37％以上.研究表明:两胶合面中仅一面有小木节(占板宽1/7～ 1/6),只能用于室内结构用集成材,不能用于室外结构用集成材;只有尺寸小于木板宽度1/10的木节与无...

The effects of knot and its size on the agglutination properties of Chinese larch engineering wood were exploredby applying aqueous polymer-isocyanate （API） adhesive in the bonding process of Chinese larch （Larix gmelinii ）glulam with knots at normal temperature. The results of glue line shear strength test, immersion delamination and boilingdelamination test showed that the knots had significant influences on the normal shear strength of glue line, failure per-centage of wood, immersion delamination percentage and boiling delamination rati...