摘要
采用X射线衍射仪测定了高聚物的结晶度(Xc)。以聚丙烯(PP)样品的测定为例,讨论了注射成型工艺参数对XC的影响,分别给出了XC与机筒温度(Tb)、模具温度(TM)、注射压力(P)和注射速率(Q)的关系。实验表明:调整机筒温度、注射压力和注射流量的大小,可以得到结晶度的最大值,当Tb=195℃、P=60 MPa、Q=50 g.s-1时,对应的结晶度最大。
The crystallinity （Xc） of polymer was measured by using X - ray diffraction methods. Not only the effect of injection molding process parameters on the Xc has been discussed, but the relation of Xc and barrel temperature （T b）, mold temperature（Tm）, injection pressure（P） and injection rate（Q） have been showed separately by taking the determination of polypropylene（PP） as an example. The maximum of the crystallinity can be obtained by adjusting the barrel temperature, the injection pressure and the injection speed. The experiment indicated that the corresponding crystallinity was the biggest when Tb = 195 ℃, P =60 Mpa and Q =50 g · s^-1.
出处
《黑龙江大学自然科学学报》
CAS
北大核心
2007年第2期155-158,共4页
Journal of Natural Science of Heilongjiang University
基金
黑龙江省科技厅攻关资助项目(GC04A407)
哈尔滨市科技局攻关资助项目(2005AA5CG047)
关键词
注射成型
工艺参数
结晶度
聚丙烯
X射线衍射
injection molding
process parameters
crystallinity
polypropylene
X - ray diffraction
