【摘要】 以LDPE/LLDPE为基材,选择S iO2为无机填充剂,研制PE/S iO2功能性保鲜膜。测试了该保鲜膜的拉伸强度、撕裂强度、透光率、雾度、热封强度。并利用该保鲜膜对菠菜进行保鲜包装,通过测定O2、CO2含量,菠菜的折光率、失重率,考察该保鲜膜对菠菜保鲜的影响,结果表明:m(S iO2)∶m(树脂)=0.06时,得到的保鲜膜对菠菜的保鲜效果较好。更多还原

【Abstract】 LDPE/LLDPE material was used as a substrate and SiO₂ as inorganic filler to improve the vapor transmission rate of PE film.Various properties of fresh-keeping films were examined,such as tensile strength,tear strength,transmittance,haze,and heat sealing strength.The percentage of O₂ and CO₂,percentage of sugar in spinach,percentage of losing-weight were examined,which were used to investigate the fresh-keeping effect of the film to spinach.It was indicated that SD-6 film is good to spinach fresh-keeping.更多还原