Environmental-friendly Ramming Materials for Mud Package and Taphole of Large-scaled Blast Furnaces

The compositions, structures and properties of envi- ronmental-friendly ramming materials for mud package and taphole of large-scaled blast furnaces were studied. The results show that the formation of silica fibers makes structure of ramming materials dense. During the process of extruding mud and ramming materials, SiC is partly oxidized ; CaO , F% 03 and carbon penetrate towards the outer wall. The improvement of ramming materials can inhibit the penetration of molten slag, iron and carbon. The bulk density of environmental-friendly ramming ma- terials dried at 200 ℃ is 2.90 g · cm-3, the cold com- pressive strength of this kind of ramming materials dried at 200 ℃ is about 17. 0 MPa and fired at I 450 ℃ is about 39. 2 MPa.     

软泡用环保型聚醚多元醇的研发及其应用

为减少聚醚多元醇可挥发物质的含量,满足高端市场的要求,高桥石化开发了用于普通软泡的环保型聚醚多元醇GEP-330A以及高活性聚醚脱气味处理工艺。使用GEP-330A可以大大减少胺类催化剂的用量。采用高活性聚醚脱气味处理工艺,使得高活性聚醚多元醇中可挥发性物质大幅降低。     

甲壳素浆料的开发现状及前景

甲壳素作为一种纯天然的全新材料,在纺织业可用作绿色环保浆料.在简要介绍了甲壳素与壳聚糖特点基础上,针对甲壳素浆料开发中存在的水溶性差等问题,详述了目前开发中主要的解决方法.     

Effects of polyamide 6 reinforcement on the compatibility of high-density polyethylene/environmental-friendly modified wood fiber composites

In order to develop excellent comprehensive mechanical strength and stability in high-density polyethylene (HDPE)/wood fiber (WF) composites, polyamide 6 (PA 6), and WF modified by environmental-friendly high temperature vapor (WF-HTV) were utilized to reinforce the compound system. The properties relating to interfacial compatibility in HDPE/WF-HTV composites were characterized and evaluated by electron universal mechanical instrument, water absorption testing, thermogravimetry, scanning electron microscope, Fourier transfer infrared spectroscopy, and differential scanning calorimetry. The results reveal that this novel compounding system can engender a synergistic effect for interfacial interactions among PA 6, HDPE, and WF-HTV only when the ratio of HDPE to PA 6 is at an optimum level (HDPE:PA 6 = 6:4). The maximum values for flexural strength, modulus, tensile strength, and impact strength can be increased by 82.05, 64.08, 93.47, and 120.45%, respectively, compared with those of HDPE/WF-HTV composites. Additionally, maximum decomposition temperatures for the first and second thermal degradation stages can be increased by 7.17and 8.99 °C, respectively. Water absorption can be effectively controlled at a relatively low level (approximately 1.50%). © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136, 47984.     

加氢法生产环保橡胶油的8种特定多环芳烃与总多环芳烃含量对应关系的研究

以加氢工艺生产CA值大于12%的环保橡胶油为目标,考察了环保橡胶油中8种特定多环芳烃(PAHs)与总多环芳烃(PCA)含量之间的对应关系。用不同原料油、不同类型的加氢催化剂以及在不同工艺条件下制备环保橡胶油,对比其PAHs和PCA含量的对应关系。结果表明:对于加氢工艺生产环保橡胶油,其PAHs与PCA含量的对应关系为:当环保橡胶油的PCA质量分数低于3%时,其PAHs含量满足欧盟环保指标的要求,而环保橡胶油的PAHs含量合格时,其PCA含量不一定合格,当且仅当PAHs质量分数低于1.0gμ/g或是未检出时,其PCA质量分数满足小于3%的指标要求;以PAHs含量为环保橡胶油的控制指标,其操作空间(反应温度)较以PCA含量为控制指标宽;建立了加氢法环保橡胶油中PAHs与PCA含量的经验关联式y_(PAHs)=0.036 3 x_(PCA)~(3.186 6),相关系数为0.982 2,可在一定范围内通过PCA含量的分析数据进行PAHs含量的预测。     

海水环境中环境友好型缓蚀剂的开发与展望

近年来,淡水资源危机日益严重,淡水资源已成为制约国民经济发展和人们生活水平提高的重要因素之一。海水的应用是解决淡水资源危机的重要途径之一。针对海水环境,阐述了环境友好型缓蚀剂的发展现状,简要描述了其作用机理,重点介绍了其复配使用情况,并对发展趋势进行了展望。     

创造城市与建筑的自然人文地域特点——低耗高效、节能环保、可持续发展

本文以世界经济一体化为背景,从适合本地域情况的自然地理生态环境入手,创造适合本地域情况的社会人文生态环境,并结合城市需求,将新建筑融于城市整体肌理中,且应考虑独特的城市标志性建筑的创造。     

环保型脲醛树脂胶粘剂的合成研究——三聚氰胺聚乙烯醇改性UF胶

介绍了三聚氰胺,聚乙烯醇(PVA)在脲醛树脂胶粘剂(UF胶)合成过程中所起的改性作用,研究了甲醛与尿素的摩尔比、PVA和三聚氰胺用量以及加料顺序、反应温度、pH值、反应时间对脲醛树脂胶性能的影响。结果表明,甲醛与尿素的摩尔比为1.4∶1,PVA和三聚氰胺的用量分别为尿素总量的1.5%和4%时,合成的脲醛树脂胶粘剂综合性能良好,游离甲醛含量低,达到了绿色环保的要求。     

新型环保电气石材料应用于防污涂料中的可行性研究

本文通过对电气石粉体的成分、粒度、负离子发射浓度等指标进行测试分析,结合浅海挂板试验以及实验室抗藤壶附着试验、抑菌试验等,对电气石材料在船舶防污涂料中的应用及其防污机理进行了可行性研究。研究结果表明:通过适当的改性手段,可将电气石矿物材料添加到防污涂料中,它在涂料中起到一定的防污作用。     

低碳环境友好技术转移研究综述

应对气候变化的重要手段之一是进行低碳环境友好技术转移,实现技术转移的主要途径为清洁发展（C D M）机制。但目前,低碳技术的转移并不尽人意,究其原因主要是由于外部环境发育尚不够成熟,且在实施过程中存在诸多转移障碍。本文分析了低碳环境友好技术的重要性和转移现状,归纳提炼了技术转移的主要影响因素,并提出了促进我国技术转移的建议。