The chlorinated polypropylene (PPC1)-polypyrrole (PPy) conducting films were successfully synthesized by a novel method for the first time. The mechanical properties of PPC1-PPy conducting films were investigated by m...The chlorinated polypropylene (PPC1)-polypyrrole (PPy) conducting films were successfully synthesized by a novel method for the first time. The mechanical properties of PPC1-PPy conducting films were investigated by means of stress-strain test and DMA. It was shown that the rupture strength and initial modulus increase with the increase of polypyrrole content , but the elongation at rupture decrease. Besides, the glass transition temperature (Tg) is increasing to a plateau when polypyrrole content attains 6%. Moreover, a new mechanical model to describe the mechanical properties of PPC1-PPy blend system is established by changing the correction factor in Mooney model. It was found that the theoretic value of the model is well coincident with the experimental results.展开更多
The chlorinated polypropylene-polypyrrole composite film was synthesized by means of a newmethod for the first time. The effects of various conditions on polymerization and the electric con-ductivity of PPCl-PPy compo...The chlorinated polypropylene-polypyrrole composite film was synthesized by means of a newmethod for the first time. The effects of various conditions on polymerization and the electric con-ductivity of PPCl-PPy composite film were investigated. It was found that PPCl-FeCl<sub>3</sub> mixturehad an excellent film-forming ability and PPCl-PPy composite film could attain high conductivityat low content of polypyrrole and was stable for heat and atmosphere.展开更多
The foamed polypropylene（PP） with excellent mechanical and thermal insulating properties was reinforced by blending chlorinated polyethylene（CPE）, followed by compression molding foaming in cross-link. The effects...The foamed polypropylene（PP） with excellent mechanical and thermal insulating properties was reinforced by blending chlorinated polyethylene（CPE）, followed by compression molding foaming in cross-link. The effects of CPE on the foaming behavior, thermal and mechanical properties of the foamed PP were studied by the measurements of density, thermal conductivity, Vicat softening temperature, tensile strength, impact strength and SEM. The results showed that the foamed PP got the best properties when the weight ratio of CPE/PP was 20 wt%. The density of the obtained foamed PP was as low as 0.37 g/cm^3, the impact strength was 16.5 kJ/m^2, the tensile strength was 17.7 MPa, the thermal conductivity was 0.035 W/（m·K）, and the Vicat softening temperature was 112 ℃.展开更多
New kinds of solid-solid phase change materials have been prepared in our laboratory. In these materials, the rigid polymer chlorinated polypropylene is taken as skeletons and the flexible polymer polyethylene glycol ...New kinds of solid-solid phase change materials have been prepared in our laboratory. In these materials, the rigid polymer chlorinated polypropylene is taken as skeletons and the flexible polymer polyethylene glycol 6000 and polyethylene glycol 10000 are taken as functional chains. Results show that chlorinated polypropylene grafted by polyethylene glycol 10000 has greater enthalpy than chlorinated polypropylene grafted by polyethylene glycol 6000.展开更多
文摘The chlorinated polypropylene (PPC1)-polypyrrole (PPy) conducting films were successfully synthesized by a novel method for the first time. The mechanical properties of PPC1-PPy conducting films were investigated by means of stress-strain test and DMA. It was shown that the rupture strength and initial modulus increase with the increase of polypyrrole content , but the elongation at rupture decrease. Besides, the glass transition temperature (Tg) is increasing to a plateau when polypyrrole content attains 6%. Moreover, a new mechanical model to describe the mechanical properties of PPC1-PPy blend system is established by changing the correction factor in Mooney model. It was found that the theoretic value of the model is well coincident with the experimental results.
文摘The chlorinated polypropylene-polypyrrole composite film was synthesized by means of a newmethod for the first time. The effects of various conditions on polymerization and the electric con-ductivity of PPCl-PPy composite film were investigated. It was found that PPCl-FeCl<sub>3</sub> mixturehad an excellent film-forming ability and PPCl-PPy composite film could attain high conductivityat low content of polypyrrole and was stable for heat and atmosphere.
基金Funded by the National Natural Science Foundation of China(No.51403001)the Key Laboratory of Renewable Energy,Chinese Academy of Sciences(No.y407k31001)the Anhui Provincial Department of Education(No.2013KJS030018)
文摘The foamed polypropylene（PP） with excellent mechanical and thermal insulating properties was reinforced by blending chlorinated polyethylene（CPE）, followed by compression molding foaming in cross-link. The effects of CPE on the foaming behavior, thermal and mechanical properties of the foamed PP were studied by the measurements of density, thermal conductivity, Vicat softening temperature, tensile strength, impact strength and SEM. The results showed that the foamed PP got the best properties when the weight ratio of CPE/PP was 20 wt%. The density of the obtained foamed PP was as low as 0.37 g/cm^3, the impact strength was 16.5 kJ/m^2, the tensile strength was 17.7 MPa, the thermal conductivity was 0.035 W/（m·K）, and the Vicat softening temperature was 112 ℃.
文摘New kinds of solid-solid phase change materials have been prepared in our laboratory. In these materials, the rigid polymer chlorinated polypropylene is taken as skeletons and the flexible polymer polyethylene glycol 6000 and polyethylene glycol 10000 are taken as functional chains. Results show that chlorinated polypropylene grafted by polyethylene glycol 10000 has greater enthalpy than chlorinated polypropylene grafted by polyethylene glycol 6000.
