摘要
通过熔融共混法制备了聚苯乙烯(PS)/八苯基多面体低聚倍半硅氧烷(OPS)复合材料。采用氧指数仪和毛细管流变仪测试了复合材料的阻燃与流变性能。结果表明:PS/OPS复合材料为典型的假塑性流体;在较低的剪切速率下,复合材料的表观黏度随着OPS含量的增加而降低,但在较高的剪切速率下,其表观黏度随着OPS含量的增加而增大;与纯PS相比,PS/OPS复合材料的黏流活化能随OPS含量的增加而略有增加;OPS的加入有助于提高PS的阻燃性和热稳定性。
Polystyrene/octaphenyl silsesquioxane （PS/OPS） composite was prepared by melt blending. The flame retardance and rheological properties of the composite were studied by using oxygen index meter and capillary rheometer. The results show that： the composite belongs to typical pseudo-plastic fluid; with the increase of OPS content, the apparent viscosity of the composite decreases under lower shear rate and increases under higher shear rate; compared with pure PS, the viscous flow activation energy of the composite increases by a little with the increase of OPS content; the addition of OPS is helpful to improve the flame retardance and thermal stability of PS.
出处
《塑料科技》
CAS
北大核心
2008年第7期32-36,共5页
Plastics Science and Technology
基金
江苏省高技术项目(BG2007047)
