Nine groups of biomass packaging materials with different formula have been synthesized, which were made up of straw fiber and starch by foaming technique. In order to analysis the influence of main composites on cushion performance, a series of tests were conducted to measure the impact behavior, rebound property and static compression performance of materials. Measuring results show that material impact toughness increases with content of fiber. When the content of plasticizer is 10%, the material impact energy absorption is maximum, when the ratio of active agent and foaming agent is 1:1, a stable foaming process can be obtained, which makes the bubble uniform and increases rebound rate.
There is a great potential market for biodegradable materials products and process equipment, long time molding, lower heat transfer efficiency, uniform temperature distribution and other issues have been studied focused, combined with biomass biodegradable food boxes forming technology research. The die temperature distribution and the temperature difference between upper and lower template have been analyzed by simulation model in this paper. According to analyzing, the die structure has been changed, so as to meet the requirements of the upper and lower temperature.
Biomass materials are the best substitute for those made of plastic packaging materials all over the world. Widespread application of these materials can control or eliminate the increase of white pollution problem effectively. In this paper, the analysis model of biomass 450 ml lunch box was established based on Life Cycle Assessment, and then the environment Friendliness of the box, such as resource consumption, environment quality and human health, was analyzed. The results have shown that the resource consumption, environment quality and human health of biomass products were 26.6mPt, 6.23mPt, 16mPt, and these parameters of plastic products were 291mPt, 12.1mPt, 74.1mPt. Therefore, the biomass products have better environmental Friendliness than plastic products.
The rheological behavior of slurry of foam cushion packaging based on fiber and starch was analyzed using digital viscosity meter. Meanwhile the response relationship of viscosity to time, shear rate to shear stress, and viscosity to temperature were also measured. The results showed that the slurry is a kind of non-newtonian fluid with the character of shear thinning. With the increasing of shear rate, apparent viscosity of system keeps in decreasing till the steady state finally. With temperature rising, plastic viscosity and yield strength of slurry will be smaller susceptibly. At last, Casson-Model was chose for the matching of plastic viscosity and yield strength.
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