选用甲基丙烯酸缩水甘油酯(GMA)作为偶联剂,探索了对杨木/塑料复合材料的力学性能和耐久性的改善;并利用SEM和FTIR分析了GMA加入苯乙烯单体(St)前后,高聚物与木材的界面复合效果与反应机制.SEM和FTIR的分析结果表明:GMA借助其自身的环氧基团,实现了与木材细胞壁上羟基的化学键合,且通过自身的双键实现了与单体St的共聚合,最终使高聚物与木材细胞壁较充分地实现了化学键联;高聚物以立体交联的形式填充于细胞腔中,与细胞壁紧密接触,无明显缝隙,复合效果良好.综合性能测试结果表明:GMA的加入,使改性木塑复合材料的静曲强度(MOR)、弹性模量(MOE)、顺纹抗压强度和硬度较未改性前分别提高45%、52%、71%和141%;尺寸稳定性较未改性前提高3倍;耐腐性较未改性前提高8.56倍.
参考文献
| [1] | Bakraji E H,Salman N.Properties of wood-plastic composites:Effect of inorganic additives[J].Radiation Physics and Chemistry,2003,66(1):49-53. |
| [2] | 程羽,郭成,景成芳,等.术塑复合材料疲劳性能的研究[J].复合材料学报,2001,18(4):119-122.Cheng Yu,Guo Cheng,Jing Chengfang,et al.Fatigue properties of wood plastic composites[J].Acta Materiae Compositae Sinica,2001,18(4):119-122. |
| [3] | Schneider M H,Vasic S,Lande S,et al.Static bending and toughness of wood polymer composites (Yellow birch and basswood)[J].Wood Science Technology,2003,37(3/4):165-176. |
| [4] | Razi P S,Raman A.Studies on impact fracture properties of wood-polymer composites[J].Journal of Composite Materials,2000,34(12):980-997. |
| [5] | Yildiz 0 C,Yildiz S,Gezer E D.Mechanical properties and decay resistance of wood-polymer composites prepared from fast growing species in Turkey[J].Bioresource Technology,2005,96(9):1003-1011. |
| [6] | Couturier M P,George K,Schneider M H.Thermophysical properties of wood-polymer composites[J].Wood Science and Technology,1996,30(3),179-196. |
| [7] | Feist W C,Rowell R M.Moisture sorption and accelerated weathering of acetylated and methacrylated aspen[J].Wood and Fiber Science,1991,23(1):128-136. |
| [8] | Ellis W D.Moisture sorption and swelling of wood-polymer composites[J].Wood and Fiber Science,1994,26(3):333-341. |
| [9] | Solpan D,Guven O.Preservation of beech and spruce wood by allyl alcohol-based copolymers[J].Radiation Physics and Chemistry,1999,54(6):583-591. |
| [10] | Tmimar M C,Pitman A,Mihai M D.Biological resistance of chemically modified aspen composites[J].International Biodeterioration & Biodegradation,1999,43(4):181-187. |
| [11] | Sheikh N,Taromi F A.Radiation induced polymerization of vinyl monomers and their application for preparation of woodpolymer composites[J].Radiation Physics and Chemistry,1993,42(1/3):179-182. |
| [12] | 王新爱,朱玮,赵荣军,等.杨木塑合木制备初探Ⅰ:杨木-甲基丙烯酸甲酯-甲基丙烯酸共聚塑合木的制备[J].西北林学院学报,2001,16(2):83-87.Wang Xin'ai,Zhu Wei,Zhao Rongjun,et al A preliminary study on the preparation of poplar wood polymer composites Ⅰ:Preparation of poplar-MMA-MAA wood polymer composites (WPC)[J].Journal of Northwest Forestry University,2001,16(2):83-87. |
| [13] | 任重远,李邦.聚丙烯酸酯木塑复合材料[J].复合材料学报,1994,11(3):7-12.Ren Zhongyuan,Li Bang.Polyacrylate wood plastic composites[J].Aeta Materiae Compositae Sinica,1994,11(3):7-12. |
| [14] | Solpan D,Guven O.Radiation initiated copolymerization of allyl 2,3 epoxy propyl ether with acrylonitrile and methyl methacrylate and their potential use in the preservation of wooden objects[J].Radiation Physicals Chemistry,1995,46(4/6):889-892. |
| [15] | Baokraji E H,Salman N,Othman I.Radiation-induced polymerization of acrylamide within okoume (Aucoumea klaineana pierre)[J].Radiation Physics and Chemistry,2002,64(4):277-281. |
| [16] | EI-Awady N I.Wood polymer composites using thermal and radiation techniques[J].Journal of Reinforced Plastics and Composites,1999,18(15):1367-1374. |
| [17] | Bakraji E H,Salman N,Al-Kassiri H.Gamma-radiationinduced wood-plastic composites from syrian tree species[J].Radiation Physics and Chemistry,2001,61(2):137-141. |
| [18] | Ajji Z.Preparation of pinewood/polymer/composites using gamma irradiation[J].Radiation Physics and Chemistry,2006,75(9):1075-1079. |
| [19] | Hill C A S,Cetin N S.Surface activation of wood for graft polymerization[J].International Journal of Adhesion & Adhesives,2000,20(1):71-76. |
| [20] | 唐辉,徐兴伟.基于电子束辅助固化的木塑复合材料的研究[J].中国塑料,2004,18(1):50-54.Tang Hui,Xu Xingwei.Research of wood/polymer composites based on the electron beam curing[J].China Plastic,2004,18(1):50-54. |
| [21] | Devi R R,All I,Maji T K.Chemical modification of rubber wood with styrene in combination with a crosslinker:Effect on dimensional stability and strength property[J].Bioresource Technology,2003,88(3):185-188. |
| [22] | Kartal S N,Yoshimura T,Imamura Y.Decay and termite resistance of boron-treated and chemically modified wood by in situ co-polymerization of allyl glycidyl ether (AGE) with methyl methacrylate (MMA)[J].International Biodeterioration & Biodegradation,2004,53(2):111-117. |
| [23] | 周亚洲,谭晓明,余国锋,等.失水甘油烯丙醚预聚体的制备[J].高分子材料科学与工程,2000,16(6):69-74.Zhou Yazhou,Tan Xiaoming,Yu Guofeng,et al.Preparation of pre-polymer of glycidyl allyl ether[J].Polymer Materials Science and Engineering,2000,16(6):69-74. |
| [24] | 唐成华.苯乙烯-GMA共聚物的合成及其在尼龙6/聚苯醚共混体系中的应用[J].化工进展,2003,22(2):199-203.Tang Chenghua.Synthesis of styrene-glycidyl methacrylate copolymer and its application in PA/PPO blends[J].Chemical Industry and Engineering Progress,2003,22(2):199-203. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%