聚丙烯包装材料透明改性的研究

Transparent Modified Polypropylene Packaging Material

中文关键词: 均聚聚丙烯  α成核剂  透明性能

英文关键词: homopolymer polypropylene  α-nucleating agent  transparent performance

中文摘要:

      目的 以均聚聚丙烯为研究对象，研究具有更好透明度的聚丙烯材料的配方。 方法 使用直接加入法对各种原材料进行配比，在单螺杆挤出机进行共混熔融挤出造粒，根据测试标准进行制样并测试。 结果 添加质量分数为 0.3%的α成核剂到均聚聚丙烯中时，聚丙烯试样的熔融温度最高，结晶度最大，半结晶时间最短，透光率和拉伸强度最大，冲击强度最小。 结论 在均聚聚丙烯中添加质量分数为 0.3%的α成核剂复配助剂可以制备耐 150 ℃以下的温度，且具有更好透明度的聚丙烯材料。

英文摘要:

      This paper took homopolymer polypropylene as the research object, and researched the formulation of better transparency polypropylene material. A variety of raw materials were mixed with direct addition method, melting extruded in a single screw extruder to granulate for sample preparation. Test criteria were based on sample preparation and testing. When α-nucleating agent was added with a mass fraction of 0.3% to homo polypropylene, the melt temperature of polypropylene sample was the highest, the degree of crystallinity was the maximum, the crystallization half time was the shortest, the light transmittance and tensile strength were the maximum, and the impact strength was the minimum. Addition of 0.3% mass fraction of α-nucleating agent as the compounding additive to homo-polypropylene could lead to preparation of polypropylene material with resistance to temperature below 150 ℃ and better transparency.