CAJ | 학술논문

将磷酸盐成核剂添加到高抗冲聚丙烯(PP-HI)/聚四氟乙烯(PTFE)共混物中，研究了成核剂用量对PP-HI/PTFE共混物耐刮擦性能的影响，并重点研究了不同成核剂用量下共混物一段式划痕硬度与三段式划痕硬度的区别。结果表明，与一段式划痕硬度相比，通过对测试数据分段进行线性拟合获得的三段式划痕硬度更能准确地表述不同成核剂用量下共混物划痕硬度随负荷变化的情况，分段拟合线的交点（临界负荷Fc1和Fc2）分别可作为判断共混物表面刮擦损伤形貌向鱼鳞纹形貌及移除形貌转变的判据。当成核剂用量为0.15份时，共混物的结晶度和一段式划痕硬度最高，其表面刮擦损伤形貌由轻划形貌转为鱼鳞纹形貌所需的临界负荷Fc1最高，摩擦系数最低，具有最好的耐刮擦性能。
장린산염성핵제첨가도고항충취병희(PP-HI)/취사불을희(PTFE)공혼물중，연구료성핵제용량대PP-HI/PTFE공혼물내괄찰성능적영향，병중점연구료불동성핵제용량하공혼물일단식화흔경도여삼단식화흔경도적구별。결과표명，여일단식화흔경도상비，통과대측시수거분단진행선성의합획득적삼단식화흔경도경능준학지표술불동성핵제용량하공혼물화흔경도수부하변화적정황，분단의합선적교점（림계부하Fc1화Fc2）분별가작위판단공혼물표면괄찰손상형모향어린문형모급이제형모전변적판거。당성핵제용량위0.15빈시，공혼물적결정도화일단식화흔경도최고，기표면괄찰손상형모유경화형모전위어린문형모소수적림계부하Fc1최고，마찰계수최저，구유최호적내괄찰성능。
Phosphate nucleation agent was added into high-impact polypropylene (PP-HI)/polytetrafluoroethylene (PTFE) blends with melt blending and the effects of nucleation agent content on the scratch resistance of PP-HI/PTFE blends were studied, meanwhile,the differences of the one-stage and three-stage scratch hardness of the blends under different nucleation agent content were mainly investigated. The results show that compared with the one-stage scratch hardness,the three-stage scratch hardness gained through piecewise linear fitting of the test data can more accurately express the change conditions of the scratch hardness along with the change of the load under different nucleation agent content,and the intersection point of piecewise fitting line (critical load Fc1 and Fc2),respectively,can be used as the criterion of the surface scratch damage morphology of the blend being changed into scales grain morphology and material removal morphology. When the nucleation agent content is 0.15 phr,the crystallinity and one-stage scratch hardness of the blend are highest and the friction coefficient is lowest,the required critical load Fc1 for changing the surface scratch damage morphology from mar morphology to fish-scale morphology is highest,which indicates that the blend has the best scratch resistance.