本文選題：廢舊高密度聚乙烯 + 復(fù)合增韌劑��； 參考：《包裝學(xué)報(bào)》2016年02期

【摘要】：以廢舊高密度聚乙烯(RHDPE)為基材、自制復(fù)合增韌劑(CTA)為改性劑,采用雙螺桿擠出機(jī)制備了共混物,研究了改性劑含量對RHDPE力學(xué)性能、熔融與結(jié)晶行為、熱性能以及微觀形貌等的影響。結(jié)果表明,隨著改性劑含量的增加,共混物的拉伸強(qiáng)度和彎曲強(qiáng)度下降,沖擊強(qiáng)度明顯增加;當(dāng)CTA的添加質(zhì)量分?jǐn)?shù)≥20%時(shí),增韌幅度明顯減緩。DSC和TGA結(jié)果顯示,改性劑的加入對RHDPE結(jié)晶度和耐熱性能沒有產(chǎn)生明顯影響,但使PE晶體結(jié)構(gòu)的完整性降低。SEM觀察沖擊斷面結(jié)果表明,共混物的韌性隨改性劑的添加得到了顯著改善,但當(dāng)CTA的添加質(zhì)量分?jǐn)?shù)超過20%后,斷面顯示改性劑分散不均勻、發(fā)生團(tuán)聚現(xiàn)象,從而導(dǎo)致增韌作用減緩。
[Abstract]:The blends were prepared by twin-screw extruder using waste high-density polyethylene (HDPE) as base material and self-made composite toughening agent (CTAA) as modifier. The mechanical properties, melting and crystallization behavior of RHDPE were studied. The influence of thermal properties and micromorphology. The results showed that the tensile strength and flexural strength of the blends decreased and the impact strength increased with the increase of the content of the modifier, and the toughening range of the blends decreased obviously when the mass fraction of CTA was 鈮，

本文編號：2009084