1) Larch veneer material
落叶松单板
3) larch tannin
落叶松单宁
1.
Conditions for synthesis of carboxymethyl larch tannin (CLT) such as reaction temperature, dispersion time and concentration of alkaline reagent were investigated.
探讨了落叶松单宁羧甲基化的合成条件,对其主要影响因素如反应温度、分散时间、碱化剂质量浓度等进行了深入的分析,确定了最佳合成反应条件为:氯乙酸与单宁中羟基的物质的量之比值为1。
2.
Modified larch tannin was prepared by grafting copolymerization and sulfoalkylation, and successfully used as retanning agent, possessing good water solubility and enhanced penetration rate.
利用接枝共聚和磺烷基化的方法对落叶松单宁改性。
3.
In this study, a predominant strain which could tolerate certain larch tannin concentration was isolated, a method was established to determine larch.
落叶松单宁属于缩合单宁,具有抗氧化、清除自由基、抗癌、抗心血管疾病、抗菌、抗炎、抗衰老等多种生物活性和药理活性。
4) larch plywood
落叶松胶合板
1.
The results showed that the properties of the wall,which was composed of larch plywood sheathing,cement,heat preservation / insulation material and plasterboard,can meet the Chinese standards for 24 mm or thicker polystyrene foam insulation.
介绍了落叶松胶合板复合墙体的结构设计、保温隔热计算方法。
2.
It was found that the Larch plywood, with the same thickness as foreign plywood products, had superior performance with nail-holding power under both lateral.
介绍轻型木结构覆板垂直拔出力和平行侧向压力2种握钉力性能的试验装置和方法,并进行国产人工林落叶松胶合板覆板的握钉力性能试验。
3.
The physical,mechanical and structural performances of Chinese larch plywood products manufactured using conventional technology are introduced.
介绍了我国常规工艺生产的落叶松结构胶合板产品的各项物理、力学和结构性能,研究开发了轻型木结构用落叶松胶合板覆板的生产技术。
5) Larch tannin adhesive
落叶松单宁胶
6) Larix composite plywood
落叶松复合胶合板
1.
added to urea-formaldehyde(UF)resin to make 3-layers Larix composite plywood with electromagnetic shielding effectiveness(SE).
为了赋予木基复合材料电磁屏蔽功能,在脲醛树脂胶中加入黄铜纤维导电单元,制备三层结构的落叶松复合胶合板,研完不同施加量和不同长度的导电单元以及涂胶量对木基复合材料电磁屏蔽性能(SE)和胶合强度(ST)的影响。
2.
Stainless steel fiber(SF)and copper fiber(CF)are added to urea-formaldehyde(UF)res- in to make 3-layers Larix composite plywood with electromagnetic shielding effectiveness(SE).
为了赋予木基复合材料电磁屏蔽功能,在脲醛树脂胶中加入不锈钢纤维(SF)和黄铜纤维(CF)导电单元,制备三层结构的落叶松复合胶合板,研究不同长度的导电单元以及涂胶量对木基复合材料电磁屏蔽性能(SE)和胶合强度(ST)的影响。
3.
Copper fiber(CF)and stainless steel fiber(SF)are added to urea-formaldehyde(UF)resin to make 3-layers Larix composite plywood in order to obtain electromagnetic shielding effectiveness(SE)of wood matrix composites.
为了赋予木基复合材料电磁屏蔽功能,在脲醛树脂胶中加入黄铜纤维和不锈钢纤维作为导电单元,制备三层结构的落叶松复合胶合板,研究金属纤维不同施加量以及涂胶量对木基复合材料电磁屏蔽性能(SE)和胶合强度(ST)的影响。
补充资料:落叶松
落叶松 Larix;larch 松科落叶松属植物的通称。树皮多呈厚片状或长片状剥裂。枝分长枝和短枝。叶螺旋状散生于长枝,簇生于短枝,线形,扁平,柔软,淡绿色,表面平或中脉隆起,背面中脉隆起,两侧有气孔线。雌雄同株,花单性,单生于短枝上;雄球花黄色;雌球花近球形,苞鳞显著,绿紫色或红色,春季与叶同时开放。球果当年成熟,近球形,或圆柱形,苞鳞露出或不露出。种子形小,具膜质长翅,当年成熟时散落。喜光不耐顶部庇荫。耐寒性强。需要湿润而通气良好的土壤。全属约18种;分布于亚洲、欧洲和北美洲的温带高山与寒温带、寒带地区。中国约有10种,分布于黑龙江、吉林、辽宁、河北、山西、陕西、四川、云南、西藏、新疆等地,其主要树种有兴安落叶松、长白落叶松、华北落叶松、新疆落叶松、太白落叶松、红杉。
通常用植苗造林。主要病害有落叶松枯梢病、落叶松早期落叶病、落叶松癌瘤病、心材蜂窝白腐和落叶松苗期立枯病。落叶松毛虫和舞毒蛾,是最严重的食叶害虫。此外还有落叶松球蚜、落叶松红腹叶蜂和落叶松腮扁叶蜂等。 落叶松木材坚实,不易腐朽,抗压、抗弯性强。可做枕木、桥梁和车辆等用材。兴安落叶松树皮含单宁8.6%~16%,新疆落叶松含单宁4.6%~12.5%,是提炼栲胶的重要原料。落叶松树冠规整、美观,针叶柔软,春季呈淡绿色,夏季呈深绿色,秋季呈金黄色,为城乡绿化的优良树种。 |
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