The die-swell mechanism of polycarbasilane ( PCS) melt for a spinneret with Y-shaped orifice and the effect of die swelling of PCS on the profile degree ( PD) of Y-shaped SiC were investigated. 研究了聚碳矽烷(PCS)熔体在Y型喷丝孔中的挤出胀大机理、膨胀模型以及膨胀比对Y型碳化矽纤维异形度的影响。
The die swelling of polycarbosilane and the profile degreeof Y-shaped SiC fibers 聚碳硅烷的挤出胀大与Y型SiC纤维的异形度
The flow rate, pressure drop, die swelling and apparent viscosity in dynamic and static extrusion can be measured by using this equipment. 利用该仪器可以测量聚合物在稳态和动态挤出过程中的流动速率、压力降、离模膨胀和表观粘度等。