【摘要】：通過密煉機(jī)熔融共混制備了一種聚丙烯阻燃抗靜電復(fù)合物,在不同混合時(shí)間(10、12和14 min)獲得不同粒子分散效果的聚丙烯材料;通過掃描電子顯微鏡、萬能力學(xué)測(cè)試機(jī)、旋轉(zhuǎn)流變儀對(duì)其進(jìn)行表征。電鏡顯示較長(zhǎng)時(shí)間密煉的樣品中,樹脂與阻燃劑界面黏合增強(qiáng),炭黑團(tuán)聚減少;對(duì)應(yīng)樣品的拉伸斷裂伸長(zhǎng)率和沖擊強(qiáng)度較高。流變測(cè)試也說明不同混合時(shí)間的粒子填充復(fù)合材料的流變性能有差異。通過"兩相模型"擬合流變數(shù)據(jù)定量分析不同分散效果樣品中粒子和高分子鏈的相互作用,粒子對(duì)高分子鏈的應(yīng)變放大效應(yīng)、黏彈貢獻(xiàn)均隨分散效果的變好而增加。
[Abstract]:A flame retardant and antistatic composite of polypropylene was prepared by melt blending of mixer. Polypropylene materials with different particle dispersion effects were obtained at different mixing time (10, 12 and 14 min). It was characterized by scanning electron microscope, universal mechanical testing machine and rotating rheometer. The electron microscope showed that the interfacial adhesion between resin and flame retardant was strengthened and the agglomeration of carbon black decreased, and the tensile elongation at break and impact strength of the corresponding samples were higher. Rheological tests also show that the Rheological properties of particle filled composites with different mixing time are different. The interaction between particles and polymer chains in samples with different dispersion effects was quantitatively analyzed by using "two-phase model" fitting rheological data. The strain amplification effect of particles on polymer chains and the viscoelastic contribution increased with the improvement of dispersion effect.
【作者單位】： 北京化工大學(xué)機(jī)電工程學(xué)院;北京低碳清潔能源研究所;
【基金】：中國(guó)航空科學(xué)基金(201535S9001) 中央高�；究蒲袠I(yè)務(wù)費(fèi)(JD1509)資助
【分類號(hào)】：TB33;TQ325.14
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本文編號(hào)：2473066