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
The dynamic mechanical properties of a new blend system consisting of phenol resin and polar polymer (acrylaterubber and/or chlorinated polypropylene) were investigated. It was found that the addition of phenol resin ...The dynamic mechanical properties of a new blend system consisting of phenol resin and polar polymer (acrylaterubber and/or chlorinated polypropylene) were investigated. It was found that the addition of phenol resin to acrylate rubberand its incompatible blend can cause a remarkable improvement in the temperature dependence of the loss tangent. As a result, the present blends are very good damping materials.展开更多
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 ℃.
基金This work was supported by the "The National High Technology Research and Development Program" of Ministry of Science and Technology of China (No. 2002AA333020).
文摘The dynamic mechanical properties of a new blend system consisting of phenol resin and polar polymer (acrylaterubber and/or chlorinated polypropylene) were investigated. It was found that the addition of phenol resin to acrylate rubberand its incompatible blend can cause a remarkable improvement in the temperature dependence of the loss tangent. As a result, the present blends are very good damping materials.
