摘要
采用磨盘形力化学反应器 ,在室温下制备了 PA6/ PP超细混合粉体 ,与 SBS共混制得 PA6/ PP/ SBS共混物 ,测定了材料的力学性能并用 TEM研究了材料在不同加工温度下相结构的变化 .结果表明 ,通过固相力化学粉碎制备的 PA6/ PP混合微粉 ,改善了 PA6与 PP和 SBS的相容性 ,促进了 PA6及 PP的分散和与 SBS的相界面结合 .在微粉填充量为 4%～ 8% (质量分数 )时 ,材料的拉伸强度大幅度提高 ,扯断伸长率保持不变 .加工温度变化引起材料相结构的变化对材料性能产生显著影响 .在 PP熔融温度下加工 ,PP粒子产生粘连形成链状结构 ,可提高材料的力学性能 .
A novel technique to modify the morphology and thus to enhance the mechanical properties of polyamide 6(PA6)/polypropene(PP)/styrene butadiene styrene triblock copolymer(SBS) blends was reported. Ultra fine PA6 and PP particles were prepared by using the pan type milling equipment and were mixed with SBS to produce blends. The phase structure of the blends was studied with TEM and the mechanical properties of the blends processed at different temperatures were also investigated. The PA6 PP co powder prepared by pan milling shows the improved compatibility and interfacial action with SBS. When the addition of PA6/PP was 4%~8%, the tensile strength of the blends was enhanced greatly and the elongation at break changed little. With the variation of the processing temperature, phase structure of PA6/PP changed remarkably and the PP particles adhered to form chain structure and the performances of the blends were further promoted.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2002年第7期1425-1428,共4页
Chemical Journal of Chinese Universities
基金
国家重大基础研究专项基金 (批准号 :G19990 64 80 9)
高等学校博士学科点专项科研基金 (批准号 :2 0 0 0 610 13 )
