本文選題：紙塑鋁復合包裝 + 木塑復合材料��； 參考：《福建師范大學》2015年碩士論文

【摘要】：近年來,各國政府和利樂公司等都在大力推進紙塑鋁復合包裝物(r-PPA)的集中回收,取得了一定的成效,我國也已有多家分離紙塑鋁復合包裝的企業(yè),但由于我國尚未建立起完善的垃圾分類回收體系,紙塑鋁復合包裝的回收率依然很低,且紙塑鋁的分離回收能耗高、二次污染嚴重、污染治理成本高,很難取得較好的經(jīng)濟效益。本研究將回收的紙塑鋁復合包裝材料不經(jīng)任何分離過程,通過共混改性技術直接作為原料,制備一種新型的木塑復合材料,具有環(huán)保節(jié)能的優(yōu)點。首先,通過對比回收紙塑鋁復合包裝材料(r-PPA)填充HDPE和r-PE兩種基體的性能,選擇較好性能的基體并確定r-PPA的添加量。結(jié)果表明：隨著r-PPA含量的增加,HDPE/r-PPA和r-PE/r-PPA復合材料的熔體黏度逐漸增大,但仍在可加工擠出范圍內(nèi)；當r-PPA質(zhì)量分數(shù)為40%時,拉伸強度最大值分別是25.01、18.95 MPa；r-PPA的添加使體系的彎曲性能得到明顯提高,但r-PPA的加入使得體系的缺口沖擊性能下降；此外,復合材料體系的24 h吸水率也隨著r-PPA含量的增大也增大。其次,固定r-PPA在HDPE中的填充量,考察相容劑的種類及其含量對復合材料的增容效果。結(jié)果顯示：PE-g-MAH、POE-g-MAH和POE-g-GMA三種相容劑都對HDPE/r-PPA復合材料體系有較好的增容效果；當POE-g-GMA添加量為6份時,復合材料的拉伸強度達到最大值33.01 MPa；相容劑的添加能有效減少r-PPA的團聚,并且能有效降低復合材料的24 h吸水率,當PE-g-MAH添加量為10份時,其吸水率降低了54.2%。第三,通過模擬r-PPA的組成成分,探討了鋁箔的存在對復合材料綜合性能的影響。結(jié)果表明：鋁箔的存在對復合材料的拉伸強度、缺口沖擊強度基本沒有影響,而鋁粉的均勻分散能起到一定程度的增強作用；經(jīng)水浸泡后的試樣力學性能都發(fā)生下降,鋁粉暴露在復合材料表面會促進水分的滲透；經(jīng)水分浸泡后的材料內(nèi)部出現(xiàn)微裂紋,纖維與基體界面受到破壞,導致材料力學性能下降。最后,探討了CaO含量和偶聯(lián)劑處理CaO對復合材料的力學性能影響。結(jié)果顯示：隨著CaO的含量的增加,復合材料的拉伸性能逐漸下降,彎曲強度逐漸提高,對其缺口沖擊強度影響不大。而經(jīng)水浸泡后的復合材料拉伸強度下降,缺口沖擊強度反而提高,且當CaO含量≥15%時,復合材料的彎曲強度也有所增大；KH560偶聯(lián)改性的復合材料吸水率最低,其等溫吸水過程滿足Fickian定律。
[Abstract]:In recent years, the governments of various countries and Tetra Company have been vigorously promoting the centralized recovery of paper plastic and aluminum composite packaging (r-PPA), which has achieved certain results. There are also many separate paper plastic and aluminum composite packaging enterprises in China. However, the recovery rate of paper plastic aluminum composite packaging is still very low, and the separation and recovery energy consumption of paper plastic aluminum is high, the secondary pollution is serious, and the pollution treatment cost is high. It is difficult to achieve better economic benefits. In this study, a new type of wood-plastic composite material was prepared by blending modification technology without any separation process. It has the advantages of environmental protection and energy saving. Firstly, by comparing the properties of recycled paper plastic-aluminum composite packaging materials (r-PPA) filled with HDPE and r-PE, the better performance matrix was selected and the addition amount of r-PPA was determined. The results show that with the increase of r-PPA content, the melt viscosity of HDPE / r-PPA and r-PER / r-PPA composites increases gradually, but is still within the range of machinable extrusion, and the maximum tensile strength of HDPE / r-PPA composites is 25.01 ~ 18.95 MPa when the mass fraction of r-PPA is 40. The flexural properties of the composites increased obviously with the addition of r-PPA, but the notched impact properties of the composites decreased with the addition of r-PPA. In addition, the 24 h water absorption of the composites also increased with the increase of r-PPA content. Secondly, the filler amount of r-PPA in HDPE was fixed to investigate the compatibilizing effect of the compatibilizer and its content on the composites. The results showed that the compatibilizer: PE-g-MAH- POE-g-MAH and POE-g-GMA had good compatibilization effect on HDPE / r-PPA composite system, when the content of POE-g-GMA was 6 phr, the tensile strength of the composite reached the maximum value of 33.01 MPa, and the addition of compatibilizer could effectively reduce the agglomeration of r-PPA. The water absorbency of the composites can be effectively reduced by 24 h. When the content of PE-g-MAH is 10 phr, the water absorption rate of the composites decreases by 54.2%. Thirdly, by simulating the composition of r-PPA, the influence of aluminum foil on the comprehensive properties of the composite was discussed. The results show that the tensile strength and notched impact strength of the composites are not affected by the presence of aluminum foil, but the homogeneous dispersion of aluminum powder can enhance the mechanical properties of the composites to some extent, and the mechanical properties of the samples after soaking in water are all decreased. After the aluminum powder is exposed to the surface of the composite, the moisture permeation will be promoted, and there will be microcracks in the material after water immersion, and the interface between the fiber and the matrix will be destroyed, which will lead to the decline of the mechanical properties of the material. Finally, the effects of Cao content and coupling agent treatment on the mechanical properties of the composites were discussed. The results show that with the increase of Cao content, the tensile properties of the composites decrease and the flexural strength increases gradually, which has little effect on the notched impact strength of the composites. However, the tensile strength of the composites after water immersion decreased, but the notched impact strength increased, and when Cao content 鈮，

本文編號：2091818