纳米碳酸钙复合淀粉基薄膜的制备及力学表征  

Preparation and Mechanical Characterization of Nano-Calcium Carbonate Composite Starch-based Film

作　　者：王雅平[1] 马桂香[1] 王素娥[1] WANG Ya-ping;MA Gui-xiang;WANG Su-e(Ordos Vocational College,Ordos 017000,China)

机构地区：[1]鄂尔多斯职业学院,内蒙古鄂尔多斯017000

出　　处：《塑料科技》2020年第3期58-60,共3页Plastics Science and Technology

摘　　要：实验采用分步改性再共混的方法,用流延工艺制备碳酸钙复合淀粉基薄膜,探究碳酸钙助剂对淀粉基薄膜性能的影响。实验结果表明:以碳酸钙作为助剂,选择添加0.2 g的碳酸钙(即占淀粉添加质量的4%) 80℃加热搅拌1 h,继续升温至90℃,共混2 h为最佳条件;此时的拉伸强度、弹性模量、断裂伸长率分别为6.091 8 MPa、384.997 5 MPa、15.172 4%。In the experiment, a stepwise modification and blending method was used to prepare a calcium carbonate composite starch-based film by a casting process. The effects of calcium carbonate additives on the properties of starchbased films were explored. Under the influence on the properties of starch-based films, the prepared samples were analyzed.The experimental results show that when calcium carbonate is used as an adjuvant, 0.2 g of calcium carbonate(that is, 4% of the added mass of starch) is selected to be heated and stirred at 80℃ for 1 h, the temperature is further increased to 90℃, and blended for 2 h to optimal conditions;tensile strength, elastic modulus, and elongation at break at this time are 6.091 8 MPa, 384. 997 5 MPa and 15.1272 4% respectively.

关 键 词：淀粉基薄膜 碳酸钙 可降解 力学性能 共混 

分 类 号：TQ320.1[化学工程—合成树脂塑料工业]