工程塑料应用
工程塑料應用
공정소료응용
ENGINEERING PLASTICS APPLICATION
2013年
6期
19-22
,共4页
杨金兴%乔辉%史翎%徐慧
楊金興%喬輝%史翎%徐慧
양금흥%교휘%사령%서혜
聚丁烯-1%超细硫酸钡%力学性能%分散性能
聚丁烯-1%超細硫痠鋇%力學性能%分散性能
취정희-1%초세류산패%역학성능%분산성능
polybutylene-1%ultrafine barium sulfate%mechanical property%dispersion performance
比较了5种等规度不同的等规聚丁烯–1的拉伸性能，并以性能较好的等规度为98%，熔体流动速率为0.5 g/10 min的等规聚丁烯–1为例，研究了两种不同粒径的超细硫酸钡对其力学性能的影响。结果表明，当超细硫酸钡298–BT质量分数为7%时，等规聚丁烯–1的缺口冲击强度由49.25 kJ/m2提高到58.44 kJ/m2。通过观察超细硫酸钡粒子形态及其在等规聚丁烯–1中的分散状况及材料断面形态，发现粒径较小的硫酸钡在聚丁烯–1中容易发生团聚，合适的粒径有助于提高聚丁烯–1的缺口冲击强度。
比較瞭5種等規度不同的等規聚丁烯–1的拉伸性能，併以性能較好的等規度為98%，鎔體流動速率為0.5 g/10 min的等規聚丁烯–1為例，研究瞭兩種不同粒徑的超細硫痠鋇對其力學性能的影響。結果錶明，噹超細硫痠鋇298–BT質量分數為7%時，等規聚丁烯–1的缺口遲擊彊度由49.25 kJ/m2提高到58.44 kJ/m2。通過觀察超細硫痠鋇粒子形態及其在等規聚丁烯–1中的分散狀況及材料斷麵形態，髮現粒徑較小的硫痠鋇在聚丁烯–1中容易髮生糰聚，閤適的粒徑有助于提高聚丁烯–1的缺口遲擊彊度。
비교료5충등규도불동적등규취정희–1적랍신성능，병이성능교호적등규도위98%，용체류동속솔위0.5 g/10 min적등규취정희–1위례，연구료량충불동립경적초세류산패대기역학성능적영향。결과표명，당초세류산패298–BT질량분수위7%시，등규취정희–1적결구충격강도유49.25 kJ/m2제고도58.44 kJ/m2。통과관찰초세류산패입자형태급기재등규취정희–1중적분산상황급재료단면형태，발현립경교소적류산패재취정희–1중용역발생단취，합괄적립경유조우제고취정희–1적결구충격강도。
The tensile properties of five kinds of isotactic polybutylene-1 with different isotacticities were compared,and the isotactic polybutylene-1 with its isotacticity being 98 and MFR being 0.5 g/10 min had a best performance. The influences of two ultrafine barium sulfates with different sizes on the mechanical properties of isotactic polybutylene-1 were investigated. The results show that when the mass fraction of ultrafine of barium sulfate 298–BT is 7%,the notched impact strength of polybutylene-1 increases from 49.25 kJ/m2 to 58.44 kJ/m2. By using scanning electric microscope,the shapes and dispersions of ultrafine barium sulfate,as well as morphologies of the fracture surface,are found that smaller particle size of barium sulfate are prone to reunion in polybutylene-1,suitable particle size distribution are helpful to improve the impact strength of polybutylene-1.
