阻燃EVA材料的研制

本文重点研究了ＥＶＡ阻燃配方的设计与应用，在试验的基础上，对几种常见阻燃剂的阻燃效果进行分析对比，选择出最佳阻燃配方，尤其使用新型磷系阻燃剂，不但提高了阻燃效果，而且起到较好的抑烟作用     

道恩集团开发出一系列环保阻燃材料

随着高分子材料应用领域的不断扩大，开发环保阻燃材料已成为阻燃材料发展的必然趋势。山东道恩集团根据国际市场的大气候，研究和开发了系列环保阻燃材料，包括环保阻燃PP，环保阻燃ABS、HIPS，环保阻燃PA6、PA66．环保阻燃PET、PBT等一系列环保阻燃纤维材料。其中环保阻燃PP和环保阻燃PA6通过了美国UL公司的阻燃认证。环保阻燃PP和环保阻燃PBT通过了SGS检测。目前环保阻燃PP和环保阻燃ABS已在进行大批量生产。     

山东塑料树脂工程技术研究中心推出低成本环保阻燃聚丙烯

隶属道恩集团的山东塑料树脂工程技术研究中心日前开发出低成本环保阻燃聚丙烯新产品。据称，该产品在原有环保阻燃聚丙烯基础上，采用不同阻燃机理建立协同阻燃机制，大大提高了阻燃效率，降低了阻燃剂的用量。[第一段]     

玻璃钢阻燃机理及阻燃剂的选择

本文针对目前对玻璃钢制品的阻燃要求的提高，首先分析了玻璃钢的阻燃机理，然后对常用阻燃剂的作用机理进行探讨，对玻璃钢阻燃剂的选择具有一定的指导作用。     

阻燃PET的热降解行为研究

利用TG—DTG方法，研究了不同配比阻燃PET在N2气氛下的热降解行为。结果发现，阻燃则能显著减缓PET的分解速率，提高PET分解后形成的残余物的稳定性，使化学成炭质量得到改善；阻燃刑的加入使体系的成炭化学反应过程提前，显示了较好的协效作用，有利于残余物的稳定，提高其阻燃性能。     

阻燃粘胶纤维及其研究现状

分析了纤维阻燃机理、常规阻燃剂以及纤维阻燃改性方法，介绍了国内外阻燃粘胶纤维的研究现状，并指出了目前粘胶纤维阻燃改性存在的问题及其发展趋势。     

无卤低烟阻燃填充料的研制及应用

介绍了无卤低烟阻燃电缆的优点,阐述了无卤低烟阻燃填充料的作用和制备方法。     

水性聚氨酯阻燃涂料研究进展

介绍了阻燃涂料的作用机理及制备方法,着重讨论了膨胀型水性聚氨酯阻燃涂料,最后阐述水性聚氨酯阻燃涂料近几年的研究进展。     

纳米无机材料与常规阻燃剂复合的新型阻燃系统

将纲伙无机材料与常规阻燃剂结合使用，可制得兼具良好阻燃性及物理机械性能的阻燃高分子材料。本文综述近两年国外在这方面的一些研究进展，包括以这类新阻燃系统阻燃的PE，PA及PBT等。     

阻燃涤纶织物的现状及发展

概述了国内外涤纶阻燃改性的研究情况,综述了涤纶阻燃处理方法,分析了卤系和磷系阻燃剂及其对涤纶的阻燃改性的优缺点,介绍了涤纶的燃烧机制、阻燃机制、阻燃方法以及阻燃性能的测试方法。涤纶阻燃改性中所用的阻燃剂主要是通过吸热、覆盖和稀释等机制发挥阻燃作用的。分析了涤纶阻燃整理存在的问题,讨论了阻燃涤纶的发展趋势。     

Flame retarded epoxy resins by adding layered silicate in combination with the conventional protection‐layer‐building flame retardants melamine borate and ammonium polyphosphate

The pyrolysis and flammability of phosphonium‐modified layered silicate epoxy resin nanocomposites (EP/LS) were evaluated when LS was combined with two flame retardants, melamine borate (MB) and ammonium polyphosphate (APP), that also act via a surface protection layer. Thermogravimetry (TG), TG coupled with Fourier Transform Spectroscopy (TG‐FTIR), oxygen index (LOI), UL 94 burning chamber (UL 94) and cone calorimeter were used. The glassy coating because of 10 wt % MB during combustion showed effects in the cone calorimeter test similar to nanodispersed LS, and somewhat better flame retardancy in flammability tests, such as LOI and UL 94. Adding APP to EP resulted in intumescent systems. The fire retardancy was particularly convincing when 15 wt % APP was used, especially for low external heat flux, and thus, also in flammability tests like LOI and UL 94. V0 classification is achieved when 15 wt % APP is used in EP. The flame retardancy efficiency of the protection layers formed does not increase linearly with the MB and APP concentrations used. The combination of LS with MB or APP shows antagonism; thus the performance of the combination of LS with MB or APP, respectively, was disappointing. No optimization of the carbonaceous‐inorganic surface layer occurred for LS‐MB. Combining LS with APP inhibited the intumescence, most probably through an increase in viscosity clearly above the value needed for intumescent behavior. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010     

我国主要橡胶助剂REACH注册概况

介绍从2008年REACH法规实施以来我国主要橡胶助剂的REACH注册完成情况。我国完成REACH注册的主要橡胶助剂有:硫化剂DTDM、不溶性硫黄、硫化树脂202、硫化树脂201、过氧化物DCP等;促进剂M,CZ,DM,D,TETD,PZ,BZ和DM等;防老剂4020,4010NA,BLE和MB等。     

硼-磷-氮协效膨胀型阻燃剂的合成与性能研究

以三聚氰胺(MEL)、磷酸(PA)、硼酸(BA)等为原料,合成了三聚氰胺磷酸盐(MP)和三聚氰胺硼酸盐(MB)中间体,以及三聚氰胺磷酸硼酸盐(MPB)硼-磷-氮协效"三位一体"膨胀型阻燃剂,用红外光谱和元素分析等方法对合成产物的结构和组成进行了表征,确定了阻燃剂合成的最佳条件。探讨了MPB的元素组成对MPB阻燃环氧树脂复合材料氧指数的影响,以及MPB的协同阻燃机理。结果表明:合成MP时,三聚氰胺和磷酸的最佳摩尔比为1:0.5;合成MB时,三聚氰胺和硼酸的最佳摩尔比为10:1;合成MPB-1(以MP为中间体)的最佳质量比为w(MP):w(BA)=3:1;合成MPB-2(以MB为中间体)的最佳质量比为w(MB):w(PA)=0.92:1。MPB-2对环氧树脂的阻燃性能优于MPB-1,这是由于MPB-2中元素组成均衡,使得B-P-N协效作用明显。     

耐辐照无卤低烟阻燃EPDM电缆绝缘材料的研制

研制耐辐照无卤低烟阻燃EPDM电缆绝缘材料.胶料优化配方为:EPDM(Nordel IP 4770P) 100,白炭黑 20,氧化锌 5,硬脂酸 1,氢氧化镁 120,硼酸锌 10,抗辐射剂(Polymer A) 25,石蜡油 20,防老剂MB 1,防老剂RD 2,助交联剂TAIC 1,助交联剂HVA-2 0.5,硫化剂DCP 3.优化配方胶料具有良好的阻燃性能、耐辐照性能和物理性能,可用于核电站1E级回路用电缆的绝缘.     

A Comparison on Physical,Structural, and Photocatalytical Properties of TiO2 Nanopowders Produced Using Sol‐Gel and Flame Spray Pyrolysis

In this study, nanoscale photocatalyst TiO₂ powders were synthesized via sol‐gel and flame spray pyrolysis (FSP). Phase structures and ratios were analyzed by X‐ray diffractometer (XRD). Size, specific surface area, and morphologies were determined using particle size analyzer, Brunauer‐Emmett‐Teller theory, and scanning electron microscope, respectively. Anatase phase with some rutile together was obtained in XRD analysis. The degradation rates of aqueous methylene blue (MB) by TiO₂ nanopowders were calculated using UV–vis spectrophotometer. It was found that MB decomposition was successfully achieved with significantly high efficiencies for both sol‐gel and FSP‐derived powders with small differences.     

600 MW褐煤机组掺烧烟煤对MB型风扇磨性能的影响

为掌握褐煤掺烧烟煤后对MB型风扇磨煤机提升压头、研磨出力、干燥出力及运行参数选取的影响,在SO2风扇磨煤机上进行了褐煤掺烧烟煤的半工业性试磨试验以及MB3600/1000/4900三介质风扇磨的热平衡计算,同时在一维火焰燃烧试验炉和煤粉气流着火温度试验炉上进行了相应的燃烧性能测试。结果表明,劣质褐煤掺烧合适比例的优质烟煤,可提高机组的带负荷能力,且磨煤机的提升压头和干燥能力也能满足运行要求。需要注意的是,由于烟煤的磨损性能较褐煤强,可能导致打击板寿命的降低。     

Effect of boron compounds on fire protection properties of epoxy based intumescent coating

The aim of this study was to investigate the effect of boron compounds on fire protection properties of intumescent coating based on ammonium polyphosphate (APP). Three kinds of boron compounds namely boric acid (BA), zinc borate (ZB) and melamine borate (MB) were used. Total amount of flame retardant additive was kept constant at 30 wt%, and boron compounds were used at three concentrations of 1, 3 and 5 wt%. Thermogravimetric analysis (TGA), Attenuated total reflectance–Fourier transform infrared spectroscopy (ATR‐FTIR) and fire test were conducted for the determining the fire performance of intumescent coating. According to fire test results, BA and MB showed synergistic effect at 1 wt% loading. ZB showed antagonistic effect at all concentrations. Fire protection effect of intumescent coating decreased as the added amount of boron compound increased regardless of boron compound type because of suppression of intumescence. Copyright © 2016 John Wiley & Sons, Ltd.     

Effective treatment for environmental enhancing the performance of undesirable agro-waste in production of carbon nanostructures as adsorbent

The work in this article deals with enhancing the performance of rice straw (RS) for production of carbon nanostructures (CNSs), as aqueous phase adsorbents, as well as benefit solution for disposing of this undesirable waste and for avoiding the environmental risk from burning. In this respect, controlling the constituents of RS by enzymatic treatment, followed by hydrothermal treatment and carbonization was carried out. The benefit role of the performed treatments was supported via comparing these CNSs with those obtained from RS pretreated by chemical pulping processes; moreover, literature reported CNSs. Results deduced from SEM and TEM analyses showing that, the two investigated CNSs samples have different surface morphologies and comprised of graphitic carbons as nodules and multi-layer graphene sheets. The investigated RS-based CNSs own numerous of oxygen-containing functional groups with low specific surface area and high mesopore volume; thus, they exhibited high iodine number of 959 and 863 mg/g, respectively. The CNSs from hydrochar of peroxidase treated RS has higher uptake to methylene blue (MB) dye (358 mg/g) than that produced from hydrochar of cellulase treated RS (202 mg/g), this may be related to its unique nanostructure. Both values are higher than that of reported CNSs, which obtained from chemical pulping processes (~ 54–119 mg/g). The adsorption of MB dye is well-fitted with Langmuir and described by pseudo-second order kinetic model.     

Preparation of expandable graphite with silicate assistant intercalation and its effect on flame retardancy of ethylene vinyl acetate composite

A halogen‐free intumescent flame retardant expandable graphite composite (EG), with an initial expansion temperature of 202°C and expansion volume of 517 mL g⁻¹, was successfully prepared via a facile two‐step intercalation method, i.e. using KMnO₄ as oxidant and H₂SO₄, Na₂SiO₃·9H₂O as intercalators. The prepared EG flame retardant was characterized by field emission scanning electron microscope, X‐ray diffraction spectroscopy, energy dispersive spectroscopy and Fourier transform infrared spectroscopy. Furthermore, flame retardancy and thermal property of various ethylene vinyl acetate copolymer (EVA) composites, including EVA/EG and EVA/EG/APP (ammonium polyphosphate) specimens, were studied through limiting oxygen index instrument (LOI), vertical combustion UL‐94 rating, thermal gravimetric and differential thermal analysis. The results indicate that the EVA/EG and EVA/EG/APP composites exhibit a better flame retardancy. Addition of EG at a mass fraction of 30% leads LOI of 70EVA/30EG composite improved to 28.7%. Even more, the synergistic effect between EG and APP improves the LOI of 70EVA/10APP /20EG composite to 30.7%. This synergistic efficiency is attributed to the formation of compact and stable layer‐structure, and the prepared EG can make EVA composite reach the UL‐94 level of V‐0. POLYM. COMPOS., 36:1407–1416, 2015. © 2014 Society of Plastics Engineers     

Fe2+/H2O2体系降解MB机制及影响因素研究

以亚甲基蓝（MB）作为目标污染物，实验研究了Fe²⁺/H₂O₂体系降解MB的活性物质，明确了主要反应条件对MB降解的影响特性。结果表明：HO₂?没有直接降解MB的能力；Fe²⁺/H₂O₂体系对MB的降解能力主要来自于?OH；Fe²⁺/H₂O₂体系降解MB可分为快速反应阶段和匀速反应阶段。快速反应阶段的MB降解率随温度升高而下降。体系对MB降解能力随H₂O₂初始浓度增加呈现先升高后减弱的趋势，本实验条件下，最佳H₂O₂初始浓度为5 mmol·L^-1。体系对MB降解能力随Fe²⁺初始浓度的增加而单调增加。MB降解速率随MB初始浓度的增加而增加，但MB降解率随其初始浓度呈现先增大后减小的趋势。保证?OH生成速率及其有效利用是提高体系氧化能力及H₂O₂利用率的关键。