工程塑料应用
工程塑料應用
공정소료응용
ENGINEERING PLASTICS APPLICATION
2014年
6期
31-34
,共4页
聚丙烯%苯乙烯-丁二烯-苯乙烯共聚物%聚苯乙烯%力学性能%热性能%流动性
聚丙烯%苯乙烯-丁二烯-苯乙烯共聚物%聚苯乙烯%力學性能%熱性能%流動性
취병희%분을희-정이희-분을희공취물%취분을희%역학성능%열성능%류동성
polypropylene%styrene-butadiene-styrene copolymer%polystyrene%mechanical property%thermal property%flow property
通过添加聚苯乙烯(PS)、热塑性弹性体苯乙烯-丁二烯-苯乙烯共聚物(SBS)，以改善聚丙烯(PP)的性能。先采用熔融法制备PP/PS共混物，在确定PP，PS最佳配比的基础上，再添加SBS制备PP/PS/SBS共混物，确定了PP，PS及SBS的最佳配比。研究了PP/PS，PP/PS/SBS共混物的力学性能、热性能及熔体流动行为。结果表明，当PP与PS的质量比为70∶30时，PP/PS共混物的性能最好，其拉伸强度为28.5 MPa，拉伸弹性模量为1214 MPa，弯曲弹性模量为1752 MPa，冲击强度为14.0 kJ/m2，断裂应变为130%，维卡软化温度为143.9℃。当PP，PS及SBS的质量比为70∶30∶10时，PP/PS/SBS共混物的性能最好，其拉伸强度为23.2 MPa，拉伸弹性模量1040 MPa，断裂应变为260%，冲击强度为18.0 kJ/m2，弯曲强度为36.5 MPa，弯曲弹性模量为1297 MPa，定挠度弯曲应力为36.1 MPa，弯曲破坏应力为36.5 MPa，熔体流动速率为8.94 g/(10 min)，维卡软化温度为139.0℃。
通過添加聚苯乙烯(PS)、熱塑性彈性體苯乙烯-丁二烯-苯乙烯共聚物(SBS)，以改善聚丙烯(PP)的性能。先採用鎔融法製備PP/PS共混物，在確定PP，PS最佳配比的基礎上，再添加SBS製備PP/PS/SBS共混物，確定瞭PP，PS及SBS的最佳配比。研究瞭PP/PS，PP/PS/SBS共混物的力學性能、熱性能及鎔體流動行為。結果錶明，噹PP與PS的質量比為70∶30時，PP/PS共混物的性能最好，其拉伸彊度為28.5 MPa，拉伸彈性模量為1214 MPa，彎麯彈性模量為1752 MPa，遲擊彊度為14.0 kJ/m2，斷裂應變為130%，維卡軟化溫度為143.9℃。噹PP，PS及SBS的質量比為70∶30∶10時，PP/PS/SBS共混物的性能最好，其拉伸彊度為23.2 MPa，拉伸彈性模量1040 MPa，斷裂應變為260%，遲擊彊度為18.0 kJ/m2，彎麯彊度為36.5 MPa，彎麯彈性模量為1297 MPa，定撓度彎麯應力為36.1 MPa，彎麯破壞應力為36.5 MPa，鎔體流動速率為8.94 g/(10 min)，維卡軟化溫度為139.0℃。
통과첨가취분을희(PS)、열소성탄성체분을희-정이희-분을희공취물(SBS)，이개선취병희(PP)적성능。선채용용융법제비PP/PS공혼물，재학정PP，PS최가배비적기출상，재첨가SBS제비PP/PS/SBS공혼물，학정료PP，PS급SBS적최가배비。연구료PP/PS，PP/PS/SBS공혼물적역학성능、열성능급용체류동행위。결과표명，당PP여PS적질량비위70∶30시，PP/PS공혼물적성능최호，기랍신강도위28.5 MPa，랍신탄성모량위1214 MPa，만곡탄성모량위1752 MPa，충격강도위14.0 kJ/m2，단렬응변위130%，유잡연화온도위143.9℃。당PP，PS급SBS적질량비위70∶30∶10시，PP/PS/SBS공혼물적성능최호，기랍신강도위23.2 MPa，랍신탄성모량1040 MPa，단렬응변위260%，충격강도위18.0 kJ/m2，만곡강도위36.5 MPa，만곡탄성모량위1297 MPa，정뇨도만곡응력위36.1 MPa，만곡파배응력위36.5 MPa，용체류동속솔위8.94 g/(10 min)，유잡연화온도위139.0℃。
The properties of polypropylene(PP) were modified by adding polystyrene(PS) and styrene-butadiene-styrene copolymer(SBS) thermoplastic elastomer. PP/PS blends were prepared by melt blending method,and then PP/PS/SBS blends were prepared basing on the best ratio of PP and PS. The mechanical properties,vicat softening temperature (VST) and melt flow behavior of PP/PS and PP/PS/SBS blends were investigated. The results indicate that the comprehensive properties of PP/PS blend are the best when the mass ratio of PP and PS is 70∶30. The tensile strength,tensile modulus of elasticity and bending modulus of elasticity of PP/PS blend are 28.5,1 214,1 752 MPa respectively. The impact strength,strain at break and Vicat softening temperature are 14.0 kJ/m2,130%and 143.9℃respectively. The comprehensive properties of PP/PS/SBS blend are the best when the mass ratio of PP,PS and SBS is 70∶30∶10. The tensile strength,tensile modulus of elasticity,strain at break and impact strength of PP/PS/SBS blend are 23.2 MPa, 1 040 MPa,260%and 18.0 kJ/m2 respectively. The bending strength, bending modulus of elasticity,given deflection bending stress and bending breaking stress of PP/PS/SBS blend are 36.5,1 297, 36.1,36.5 MPa respectively. The melt flow rate and Vicat softening temperature are 8.94 g/(10 min) and 139.0℃respectively.
