杂交狼尾草发泡缓冲材料的制备及性能研究

母  军; 张德荣; 范希峰; 朱  丹; 王洪宾

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杂交狼尾草发泡缓冲材料的制备及性能研究
母军¹, 张德荣¹, 范希峰², 朱丹¹, 王洪宾³
1.北京林业大学，北京 100083;2.北京草业与环境研究发展中心，北京100097;3.中国农业大学,北京100193

摘要:

为了拓展杂交狼尾草作为植物基发泡缓冲材料在包装领域的市场，减少发泡聚苯乙烯材料对环境的污染，以杂交狼尾草为主要材料，玉米淀粉为胶粘剂，异氰酸酯为发泡剂制备缓冲材料。正交试验结果表明，发泡成型的优化条件为：主料狼尾草与胶粘剂玉米淀粉、聚乙烯醇的质量比为1∶0.3∶0.15；每100 g狼尾草内添加30 mL发泡剂异氰酸酯；微波发泡时间为7 min。狼尾草发泡成型材料在含水率为14.4%时，其密度为0.30 g/cm3，每平方厘米的泡孔数为19.7；狼尾草发泡成型材料在应变为15%时，其应力值为76.3 MPa，回弹率为80.99%。研究表明，狼尾草发泡成型材料为偏硬性缓冲材料，适合包装质量大、体积大的产品。

关键词: 杂交狼尾草发泡异氰酸酯缓冲材料

DOI：

分类号:TB486.6; TB485.1

基金项目:

Preparation of Hybridized Pennisetum Foam Cushioning Material and Study of Its Performance

MU Jun¹, ZHANG De-rong¹, FAN Xi-feng², ZHU Dan¹, WANG Hong-bin³

1.Beijing Forestry University, Beijing 100083, China;2.Beijing Research Development Center for Grass and Environment, Beijing 100097, China;3.China Agricultural University, Beijing 100193, China

Abstract:

Hybridized pennisetum foam cushioning material was prepared by using cornstarch as adhesive and isocyanate as foaming agent to develop the market of plant based foam cushioning material and to reduced the environmental pollution of foamed polystyrene. Orthogonal tests were carried out. The results showed that the optimal foaming conditions were as follow: the proportion of Chinese pennisetum: cornstarch: polyvinyl alcohol is 1∶0.3∶0.15; 30 mL isocyanate in per 100 g pennisetum powder; and the microwave foaming time are 7 minutes. The density of foaming cushion material is 0.3 g/cm3 at 14.4% of moisture content and cell number is 19.7/cm2. The stress of the material is 76.3 MPa when the strain is 15% of the whole and the resilience is 80.99%. It was concluded that this material is good for packaging the products with heavy weight or large volume.

Key words: hybridized pennisetum foaming isocyanate cushion material