【摘要】 合成了单硬脂酸丙烯酸甘油二酯（AGMS）和改性纳米SiO₂的接枝物（SiO₂-g-PAGMS）,将AGMS、SiO₂-g-PAGMS、聚乙烯、接枝聚乙烯和改性纳米SiO₂等物质按比例挤出,吹膜. 60℃加速流滴实验结果表明,SiO₂-g-PAGMS与聚乙烯及接枝聚乙烯混合膜加速流滴期最高可达36 d,是同等条件下AGMS与聚乙烯及接枝聚乙烯混合膜的1. 50倍,是只添加SiO₂-g-PAGMS/聚乙烯膜的2. 25倍.接枝聚乙烯/SiO₂-g-PAGMS共混物在降低雾度的同时,结晶温度降低,熔融温度升高,膜拉伸强度变化小于11%.更多还原

【Abstract】 Dripping agricultural films can be obtained by adding dripping agents into the polymeric matrix,but the delaying and controlling migration of dripping agents is still challenging. Therefore,the graft of monostearic acid acrylic acid diglyceride（ AGMS） and modified nano SiO₂（ SiO₂-g-PAGMS） was prepared,and then the blend of AGMS,SiO₂-g-PAGMS,polyethylene,grafted polyethylene,modified SiO₂ were extruded in proportion and blown film. Acceleration dripping test at 60 ℃ showed that the maximum dripping duration of the film with SiO₂-g-PAGMS,polyethylene and grafted polyethylene compound could reach 36 d.Under the same conditions,it was 1. 50 times and 2. 25 times higher than the film of AGMS,polyethylene,grafted polyethylene compound,and SiO₂-g-PAGMS/polyethylene,respectively. Other results showed that haze and crystallization temperature of the grafted polyethylene compound/SiO₂-g-PAGMS blend decreased,while melting temperature increased,and the change of tensile strength of film was less than 11%.更多还原