摘要
以超临界CO2为发泡剂,以马来酸酐接枝聚丙烯(PP-g-MAH)为相容剂,在连续挤出发泡过程中研究了聚二甲基硅氧(烷PDMS)对无规共聚聚丙烯(R-PP)发泡性能的影响。结果表明:当CO2用量为5%时,少量PDMS和PP-g-MAH的加入能提高R-PP发泡样品的膨胀率;与纯R-PP相比,R-PP/PP-g-MAH/PDMS共混物在各个温度下发泡样品的泡孔密度要明显高于纯PP发泡样品的泡孔密度。
The effect of PDMS on foaming performance of R-PP was investigated in extrusion foaming process, using supercritical carbon dioxide as the blowing agent and PP-g-MAH as the coupling agent. The results showed that the addition of a small amount of PDMS and PP-g-MAH improved the expansion ratio of R-PP foamed samples when the content of CO2 was 5%. Furthermore, compared with pure R-PP, cell density of foamed samples obtained from R-PP/PP-g-MAH/PDMS blends was obviously higher than that of pure R-PP foamed samples.
出处
《塑料科技》
CAS
北大核心
2010年第9期47-50,共4页
Plastics Science and Technology
