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Properties of protective loose-fill foams

机译：防护性填充泡沫的特性

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This study compared the performance of eight commercial starch and expanded polystyrene (EPS) based loose-fill foam products. Density of starch-based foams is higher, by a factor of two to three times, than either EPS-based ones, Compressive stress of most starch-based foams did not differ significantly from 0.0893 MPa value for virgin EPS foam. EPS-and starch-based foams have predominantly a closed and open cellular structure, respectively. Resiliency or elastic recovery of starch-leased foams had values between 69.5 and 71.25%, which is about 10% lower than virgin EPS foam. Friability of both starch-and EPS-based foams was between 2 and 6 wt%, but starch-based foams broke into a fine dust, whereas EPS-based foams broke into large fragments. After conditioning at 20, 50, and 80% r.h., 23 degrees C and 50% r.h., 35 degrees C, the water content for starch-based foams averaged 6.0, 9.5, 14, and 8.5 wt%, respectively. The mechanical properties of starch-based foams were more sensitive to changes in relative humidity and temperature than EPS-based foams, but the higher amount of absorbed moisture did not compromise its mechanical integrity. (C) 1998 John Wiley & Sons, Inc. [References: 23]
机译：这项研究比较了八种商用淀粉和发泡聚苯乙烯（EPS）的散装泡沫产品的性能。淀粉基泡沫的密度比任何一种EPS基泡沫都要高两倍至三倍，大多数淀粉基泡沫的压缩应力与纯EPS泡沫的0.0893 MPa值没有显着差异。 EPS和淀粉基泡沫分别具有封闭和开放的孔结构。淀粉浸出泡沫的回弹性或弹性回复率在69.5％至71.25％之间，比纯EPS泡沫低约10％。淀粉基泡沫塑料和EPS基泡沫塑料的脆性都在2至6 wt％之间，但是淀粉基泡沫塑料会碎成细粉尘，而EPS基泡沫塑料会碎成大碎片。在23℃和20％，50％和80％r.h。和35℃下在50％r.h。下调节后，淀粉基泡沫的水含量分别平均为6.0、9.5、14和8.5wt％。淀粉基泡沫的机械性能比EPS基泡沫对相对湿度和温度的变化更敏感，但更高的吸收水分不会损害其机械完整性。 （C）1998 John Wiley＆Sons，Inc. [参考：23]

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