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新型磷系阻燃剂四苯基双酚A二磷酸酯阻燃ABS的应用研究

徐晓楠,卢林刚,陈南,殷全明,王大为

《中国工程科学》 2010年第12卷第2期页码 62-69

摘要：

利用自制的四苯基双酚A二磷酸酯（BDP）及其复配体系制备了阻燃ABS，研究了阻燃ABS的物理机械性能、氧指数（LOI）和垂直燃烧测试性能（试验结果显示：酚醛树脂（NP）的加入可提高BDP阻燃体系的成炭效果，采用BDP/NP= 20 %/5 %的体系阻燃ABS，材料的冲击性能下降了12.00 %，LOI达到29.50 %，UL94阻燃性能达到av-HRR和pkHRR分别下降了49.45 ％和58.09 %，TTI延长45 s，FGI降幅为68.34 %，6 min内av-SEA升幅为13.00 %，600 ℃时成炭率为16.37 %，阻燃ABS

关键词： BDP ABS APP SiO2 阻燃烟

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Performance and synergistic effect of phenolic and thio antioxidants in ABS graft copolymers

Gongsheng LI, Xuhong GUO, Wang NA, Diancheng HAO, Mingyao ZHANG, Huixuan ZHANG, Jun XU

《化学科学与工程前沿（英文）》 2011年第5卷第1期页码 26-34 doi: 10.1007/s11705-010-0531-8

摘要： The synergistic effect of phenolic and thio antioxidants on the stabilization of acrylonitrile-butadiene-styrene (ABS) graft copolymers has been studied. Three commercial antioxidants Irganox245, Irganox1076 and dilauryl thiodipropionate (DLTP) were selected. Formulations based on hindered phenols and secondary antioxidant DLTP were prepared. Stabilization was monitored in terms of changes in the functional groups (oxidation products), tensile properties and yellowness index. Differential scanning calorimetry (DSC) and thermogravimetry (TG) were also used to assess the stability. The results indicated that the combination of Irganox245 and DLTP showed much better stabilization effect than the individual components due to the strong synergistic effect. Only weak synergism could be observed in the formulation that contained Irganox1076 and DLTP. Irganox1076 and Irgnox1076/DLTP exhibited similar behaviors between antioxidants with the highest and lowest efficiencies.

关键词： antioxidant ABS graft copolymers synergistic effect

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Thermal degradation characteristics and products obtained after pyrolysis of specific polymers found in Waste Electrical and Electronic Equipment

Evangelia C. Vouvoudi, Aristea T. Rousi, Dimitris S. Achilias

《环境科学与工程前沿（英文）》 2017年第11卷第5期 doi: 10.1007/s11783-017-0996-5

摘要： Modern societies strongly support the recycling practices over simple waste accumulation due to environmental harm caused. In the framework of sustainable recycling of plastics from WEEE, pyrolysis is proposed here as a means of obtaining secondary value-added products. The aim of this study was to investigate the thermal degradation and the products obtained after pyrolysis of specific polymers found in the plastic part of WEEE, using thermogravimetric analysis and a pyrolizer equipped with a GC/MS. Polymers studied include ABS, HIPS, PC and a blend having a composition similar to that appearing in WEEE. It was found that, PC shows greater heat endurance compared to the other polymers, whereas ABS depolymerizes in three-steps. The existence of several polymers in the blend results in synergistic effects which decrease the onset and final temperature of degradation. Moreover, the fragmentation occurred in the pyrolyzer, at certain temperatures, resulted in a great variety of compounds, depending on the polymer type, such as monomers, aromatic products, phenolic compounds and hydrocarbons. The main conclusion from this investigation is that pyrolysis could be an effective method for the sustainable recycling of the plastic part of WEEE resulting in a mixture of chemicals with varying composition but being excellent to be used as fuel retrieved from secondary recycling sources.

关键词： Pyrolysis WEEE recycling ABS HIPS PC Py-GC/MS TGA