| 稻秸/淀粉胶复合材料性能研究 |
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| 引用本文： | 刘军军,何春霞,于旻.稻秸/淀粉胶复合材料性能研究[J].林产工业,2012,39(1):22-26. |
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| 作者姓名： | 刘军军 何春霞 于旻 |
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| 作者单位： | 南京农业大学工学院,南京,210031 |
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| 摘 要： | 为充分利用农作物废弃物,研究环境友好材料,通过热压成型方法制备稻秸/淀粉胶全降解复合材料。研究了预处理、胶黏剂、增塑剂和阻湿剂含量对复合材料内结合强度(IB)、弯曲强度(FS)、弯曲弹性模量(MOE)、冲击韧性(IR)、拉伸强度(TS)、拉伸模量(MOR)、含水率及2h吸水厚度膨胀率的影响,并观察了复合材料细观表面。结果表明:水热处理复合材料力学性能除IB外均较高;含胶量为10%时力学性能除MOR外均较高;1%增塑剂提高了IB、FS及TS,2%增塑剂提高了IS,增塑剂对MOE和MOR有负面影响;阻湿剂降低了复合材料力学性能。增塑剂、阻湿剂均能不同程度的增大复合材料MC。复合材料2h吸水厚度膨胀率大,防水性能差。复合材料基体和增强体两相界面结合存在明显缝隙、空洞及分层现象。
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| 关 键 词： | 稻秸/淀粉复合材料 可生物降解 物理力学性能 |
Properties of Rice Straw/Starch Adhesive Composite |
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| LIU Jun-jun
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HE Chun-xia
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YU Min.Properties of Rice Straw/Starch Adhesive Composite[J].China Forest Products Industry,2012,39(1):22-26. |
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| Authors: | LIU Jun-jun HE Chun-xia YU Min |
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| Institution: | Min (College of Engineering,Nanjing Agricultural University,Nanjing 210031,China) |
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| Abstract: | For fully utilizing agricultural residues to research and develop environmentally friendly material, the rice straw/starch adhesive composite was manufactured using molding method.The influence of raw material pretreatment,the content of starch adhesive,plasticizer and moisture retardant on physical -mechanical properties of the composites was studied.The microstructure of surface of the composite was further observed.Results showed that the composite made of hot-water treated raw material had higher mechanical properties except IB.The composite with adhesive content of 10%had higher mechanical properties except MOR;the composite with 1%plasticizer had higher IB,flexural strength and tensile strength while the composite with 2%plasticizer had higher impact resistance,but plasticizer had negative effect on MOE and MOR;the moisture retardant reduced composite mechanical properties;the plasticizer and the moisture retardant increased MC of composite to varying degree;the 2hs thickness swelling of the composite was great,and its water resistance was poor.The interface between matrix and reinforcer of the composite had different levels of stratifications and gaps. |
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| Keywords: | Rice straw/starch adhesive composite Biodegradable Physical-mechanical property |
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