STRUCTURES AND PROPERTIES OF INJECTION MOLDINGS OF FLAKY FILLER-FILLED POLYPROPYLENES

被引:8
作者
FUJIYAMA, M
机构
关键词
D O I
10.3139/217.920358
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
A polypropylene was filled with 0 to 30 wt.-% of flaky fillers such as glass flake, mica, or talc, which had similar particle sizes and different aspect ratios and crystallization temperatures. Flexural test specimens were injection-molded from the filled polypropylenes at cylinder temperatures of 200 to 320-degrees-C Properties such as flexural modulus, flexural strength, heat distortion temperature, Izod impact strength, and mold shrinkage and higher-order structures such as crystallinity, beta-crystal content, thickness of skin layer, a*-axis-oriented component fraction, and crystalline orientation fraction were measured and structure-property relationships were studied. A simulation of molecular orientation was carried out from a viewpoint of melt orientation at the gate and its relaxation in the mold cavity.
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页码:358 / 373
页数:16
相关论文
共 19 条
[1]   DYNAMIC AND TRANSIENT RHEOLOGICAL PROPERTIES OF GLASS FILLED POLYMER MELTS [J].
BRETAS, RES ;
POWELL, RL .
RHEOLOGICA ACTA, 1985, 24 (01) :69-74
[2]  
DANUSSO FG, 1959, CHEM IND, V41, P74
[3]   RHEOLOGICAL PROPERTIES OF POLYPROPYLENE HIGH-DENSITY POLYETHYLENE BLEND MELTS .2. DYNAMIC VISCOELASTIC PROPERTIES [J].
FUJIYAMA, M ;
KAWASAKI, Y .
JOURNAL OF APPLIED POLYMER SCIENCE, 1991, 42 (02) :481-488
[5]   DISTRIBUTION OF HIGHER-ORDER STRUCTURES IN INJECTION-MOLDED POLYPROPYLENES [J].
FUJIYAMA, M ;
WAKINO, T .
JOURNAL OF APPLIED POLYMER SCIENCE, 1991, 43 (01) :57-81
[6]   DISTRIBUTION OF HIGHER-ORDER STRUCTURES IN INJECTION MOLDINGS OF PARTICULATE-FILLED POLYPROPYLENES [J].
FUJIYAMA, M ;
WAKINO, T .
JOURNAL OF APPLIED POLYMER SCIENCE, 1991, 43 (01) :97-128
[7]   MELT-RECRYSTALLIZATION OF TALC-FILLED POLYPROPYLENE INJECTION MOLDINGS [J].
FUJIYAMA, M .
INTERNATIONAL POLYMER PROCESSING, 1992, 7 (02) :165-171
[8]   EFFECT OF SKIN LAYER ON SOME PROPERTIES OF INJECTION-MOLDED POLYPROPYLENE [J].
FUJIYAMA, M ;
KIMURA, S .
KOBUNSHI RONBUNSHU, 1975, 32 (10) :581-590
[9]  
FUJIYAMA M, 1987, NIHON REOROJI GAKKAI, V15, P191
[10]   THERMAL CONDUCTIVITY OF POLYMER MELTS [J].
FULLER, TR ;
FRICKE, AL .
JOURNAL OF APPLIED POLYMER SCIENCE, 1971, 15 (07) :1729-&