以3种不同形态的竹碎料为原料,不添加合成树脂,在不同热压温度条件下制备无胶竹碎料板,研究其性能特性。结果表明,随着热压温度的升高,3种无胶竹碎料板的内结合强度逐步增强,其中片状竹碎料压制的板材最高；同时,丝状和颗粒状竹碎料压制的板材吸水厚度膨胀率性能明显改善,190℃之前片状竹碎料压制的板材吸水厚度膨胀率性能最好,190℃时丝状和颗粒状竹碎料压制的板材出现严重炭化现象使吸水厚度膨胀率优于片状竹碎料压制的板材；另外,丝状竹碎料压制的板材静曲强度和弹性模量最大。竹碎料板的弯曲破坏模式主要包括下表面拉断、芯层剪切破坏,而拉伸破坏模式主要指中间芯层脆性断裂。
s:The obj ective of this paper is to evaluate some properties of binderless bamboo particleboard which was glued by extracted natural activator at different hot pressing temperature.The results reveal that all types of binderless particleboard are enforced at internal bond strength (IB)with increasing pressing temperature, and maximum one is made by slice chips.In addition,thickness swelling rate of water absorption (TS)has im-proved largely for the board made by slender and pelleted chips accordingly.But the best one is made by slice chips below 190 ℃ while it becomes to be the worst one when pressing temperature is above 190 ℃.Among all types of the species,the maximum modulus of rupture (MOR)and modulus of elasticity (MOE)come from binderless particleboard made by slice chips.The failure mode of bending test includes tensile failure of bottom surface and core shear failure while core tensile non-plastic crack is the main failure mode of transverse tensile test.
参考文献
| [1] | Xiang Shilong;Jiang Yuanzhou.Non-wood based panel[M].Beijing:Chinese Forestry Press,2001 |
| [2] | Li K.Use of marine adhesive protein as a model to devel-op formaldehyde-free wood adhesives[A].Portland,Oregon,2002:58-67. |
| [3] | Pandey A;Nema P K .Development of particle board from soybean husk without resin[J].Agricultural Engi-neering Division,2004,85:5-9. |
| [4] | 张建辉,严永林.无胶竹材碎料板的制造工艺初深[J].木工机床,2003(01):26-28,38. |
| [5] | 王进,徐科奇,沈婉茹,周迪炯,钟晓蓉,崔桂璐,金春德.漆酶活化法竹材刨花板的制造工艺[J].东北林业大学学报,2008(12):21-22. |
| [6] | 王永波,白化奎,张双保,高昕辉,张翰文.刨花形态对竹材自生胶合刨花板性能的影响[J].林业机械与木工设备,2011(06):22-25. |
| [7] | Suhasman M;Massijaya Y;Hadi Y S et al.Karakteris-tik papan partikel dari bambu tanpa menggunakan perek-at[J].Jurnal Ilmu dan Teknologi Hasil Hutan,2010,3(01):38-43. |
| [8] | 郑霞,徐剑莹,李新功.无胶竹碎料板喷蒸热压成型机理[J].功能材料,2013(09):1221-1225. |
| [9] | 黄小真,蒋身学,张齐生.3种竹材重组材耐老化性能比较[J].林业科技开发,2010(02):55-57. |
| [10] | 朱广有,高笑梅.浅谈生产优质刨花板对原料的工艺要求[J].林产工业,2006(04):35-36. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%