CAJ | 학술논문

通过比较高流动性聚丙烯CX9530B与国内外同类产品的力学性能和收缩率，研究了CX9530B收缩率较高和易翘曲变形的原因。采用将CX9530B配方中的成核剂苯甲酸钠替换为可使制品收缩率降低的成核剂的方法，在提高聚丙烯CX9530力学性能的前提下，其横向收缩率由CX9530B的1.67%降至1.52%，纵向收缩率由1.55%降至1.47%，各向同性指数由0.93提高到0.97，解决了CX9530B收缩率大和易翘曲变形的问题。
통과비교고류동성취병희CX9530B여국내외동류산품적역학성능화수축솔，연구료CX9530B수축솔교고화역교곡변형적원인。채용장CX9530B배방중적성핵제분갑산납체환위가사제품수축솔강저적성핵제적방법，재제고취병희CX9530역학성능적전제하，기횡향수축솔유CX9530B적1.67%강지1.52%，종향수축솔유1.55%강지1.47%，각향동성지수유0.93제고도0.97，해결료CX9530B수축솔대화역교곡변형적문제。
The reasons for high shrinking percentage and tendency towards buckling deformation of high flow polypropylene CX9530B was studied by comparing the mechanical properties and shrinking percentage of CX9530B with those of the same kind of products at home and abroad. Through the method for replacing nucleating agent sodium benzoate in the recipe of CX9530B with some nucleating agents that could endow polypropylene with low shrinking percentage, the transverse direction shrinking percentage of CX9530B was reduced from 1.67 percent to 1.52 percent, the machine direction one was reduced from 1.55 percent to 1.47 percent, and the isotropy index was increased from 0.93 to 0.97 on the premise of improving the mechanical properties of CX9530. Consequently, the problem of CX9530B having high shrinking percentage and tendency towards buckling deformation was resolved.