相转移法催化合成苯氧乙酰二乙胺

对防蚊剂苯氧乙酰二乙胺的合成工艺进行改进，使用相转移催化剂ＴＥＢＡ，用Ｋ２ＣＯ３代替ＮａＯＨ，无水苯聚代无水丙酮，取得较好的收率。     

硫化镍铜贫矿石分选工艺研究

超基性岩型硫化镍铜多金属共生贫矿石中矿物种类繁多，镶嵌关系复杂，伴生有什金属丰富。该矿石的分选，尤其是精矿降镁难度大．研制了一各以Ａｓ—４为捕收起泡剂分速浮选，中矿添加ＡＴ─４、ＡＴ—５等调整剂集中再选的ＢＦＰ全混合浮选新工艺，获得了良好的指标．     

红外焦平面列阵热成像用陶瓷热释电材料的研制

报道了在ＰＺＮＦＴＳ １型材料研究工作基础上提出的小面积探测器对材料选择的原则，通过进一步的添加改性制备ＰＺＮＦＴＳ Ⅱ型材料，使得用ＰＺＮＦＴＳⅡ型材料制作的小面积探测器的性能进一步提高，其达到的数值说明这种材料基本上可以满足实用红外焦平面列阵对材料性能的要求。     

温水供暖循环系统水处理剂的性能研究

根据实际需要研制出用于温水供暖系统的Ｓ２０１和ＴＦＤ－１１５两种水处理剂，这两种水处理剂具有较好的防止钢，铸铁和铜腐蚀的性能，具有较好的杀灭铁细菌、硫酸盐还原菌等微生物功能。Ｓ２０１有优良的阻垢性有，ＴＦＤ－１１５具有较宽范围的防冻功能。这两种水处理剂溶液对聚四氟乙烯等非金属材料无不良影响。     

酯交换法合成三羟甲基丙烷三丙烯酸酯

三羟甲基丙烯三丙烯酸酯（ＴＭＰＴＡ）双键含量高，固化快，所形成的固化膜耐磨、耐溶剂等性能优，是辐射固化领域应用最广泛的多官能丙烯酸酯活性稀释剂。本叙述用酯交换法合成ＴＭＰＴＡ。以丙烯酸甲酯和三羟甲基丙烷为起始反应物，试验了不同催化剂，发现无水碳酸钾的催化能力最强。反应体系中加入适量正己烷作为共沸剂，能进一步提高酯交换率和得率，研究了反应动力学进程。     

催化新材料Ni—OMS—1的合成

在强碱条件下，ＭｎＣｌ２和Ｍｇ（ＭｎＯ４）２反应，选用Ｎｉ＾２＋作模板剂，通过水热合成法制备新型催化材料锰氧化物八面体分子筛Ｎｉ－ＯＭＳ－１，用ＲＸＤ、ＢＥＴ、ＦＴ－ＩＲ等分析手段对所得样品进行表征。     

不饱和硅烷熔融挤出接枝聚乙烯

上海交通大学高分子材料研究所的王文杰等采用熔融挤出法对低密度聚乙烯（ＰＥ）进行硅烷接枝,然后在催化剂二丁基二月桂酸锡存在下进行水解交联,接枝单体为乙烯基三乙氧基硅烷（ＶＴＥＳ）,主要引发剂为过氧化二异丙苯。研究了改变ＶＴＥＳ用量、引发剂种类与用量、ＰＥ种类、接枝反应条件、加入添加剂对接枝产物的融体流动速率（ＭＦＲ）和交联样品的凝胶率的影响。结果发现,在ＶＴＥＳ用量较低时,用量增加能够提高凝胶率和ＭＦＲ;但质量分数超过２％后凝胶率基本不再随硅氧烷用量增加而上升,而ＭＦＲ有明显降低。引发剂用量增大有…     

多螯型引发剂制轩溶聚丁苯橡胶的研究

用正丁基锂和二乙烯基苯合成多螯型引发剂，以环己烷为和二乙烯基苯合成多螯型 环己烷为ＴＨＦ为极性调节剂，ＳｎＣｌ４为偶联剂合成溶聚丁苯橡胶，研究了多螯型引发剂对ＳＳＢＲ性能的影响。结果表明，与ｎ－ＢｕＬｉ体系相比，多螯型引发剂合成。     

以TCaCO3／TSiO2监控生料KH

以Ｔ_（ＣａＣＯ）_３／Ｔ_（ＳｉＯ）_２监控生料ＫＨ冯正武陕西省南郑县水泥厂（７２３１０１）１引言在质量控制中，水泥厂一般用控制ＴＣａＣＯ３、ＴＦｅ２Ｏ３两项指标来稳定配料。而ＣａＣＯ３、Ｆｅ２Ｏ３合格率只是一种代用质量特性，真正质量特性是率值（ＫＨ、...     

萤石与重晶石浮选分离的新型抑制剂

ＳＤＦ是由ＮＡＳ和ＨＤＦ按一定比例混合制成的,研究表明ＳＤＦ抑制性能优于ＮＡＳ和ＨＤＦ,是最有效的调整剂,用ＴＦ２－８作捕收剂,ＳＤＦ作调整作,在ｐＨ值５至５条件下可以实现萤石与重晶石选择性分离。     

Development of Fe Fischer–Tropsch catalysts for slurry bubble column reactors

The effect of two binder systems — a silica-based system and a silica–kaolin–clay–phosphate-based system — on a doubly promoted Fischer–Tropsch (FT) synthesis iron catalyst (100Fe/5Cu/4.2K) was studied. The catalysts were prepared by coprecipitation, followed by binder addition and spray drying at 270°C in a 1 m diameter, 2 m tall spray dryer. The binder silica content was varied from 0 to 20 wt.%. A catalyst with 12 wt.% binder silica was found to have the highest attrition resistance. The FT activity and selectivity of this catalyst are better than a Ruhrchemie catalyst at 270°C and 1.48 MPa. The addition of precipitated silica or kaolin to catalysts containing 10–12 wt.% binder silica decreases attrition resistance and increases methane selectivity. Based on the experience gained, a catalyst has been successfully spray dried in 500 g quantity. This catalyst showed 95% CO conversion over 125 h of testing at 270°C, 1.48 MPa, and 2 NL/g-cat/h and had less than 4% methane selectivity. Its attrition resistance was one of the highest among the catalysts tested.     

The effect of SiO_2 particle size on iron based F–T synthesis catalysts

The effect of particle size of silica, as catalyst binder, on the chemical and mechanical properties of iron based FT catalyst was studied in this work. The samples were characterized using XRD, BET, TEM, FT-IR, and H2-TPR, respectively. The attrition resistance and the FT activity were tested. Si-8–Si-15 catalysts prepared with 8–15 nm silica sol show good attrition resistance(attrition loss b 4%), especially Si-13 with an attrition loss of 1.89%. Hematite appeared in XRD patterns when silica sol above 15 nm is used. TEM micrographs show that no obvious Si O_2 particles appear when silica sol particle with size less than 8 nm was used, but Si O_2 particles coated with small ferrihydrite particles appear when silica sol above 8 nm was used. Si–O–Si vibration peak in FT-IR spectra increases with increasing silica sol size. Samples prepared with silica sol show good stability of FT reactions, and the average molecular weight of FT products increases with the increase of Si O_2 particle.     

Synthesis,Characterization and Properties of Nitropolybutadiene as Energetic Plasticizer for NHTPB Binder

The nitration of low molecular weight polybutadiene (PB) by a convenient and inexpensive procedure was investigated. To retain the unique physico‐chemical properties of the plasticizer, it was nitrated to an extent of 10 % double bonds. The product nitropolybutadiene (NPB) was characterized by FT‐IR and ¹H NMR spectroscopy as well as GPC, DSC, and TGA methods. The kinetic parameters for the decomposition of NPB from room temperature to 400 °C were obtained from non‐isothermal DSC. The changes in glass transition temperature (T _g) and inert uncured binder systems were used for determination of its efficiency as plasticizer. NPB was used in cured and unfilled nitro‐hydroxyl terminated polybutadiene (NHTPB) binder. Isothermal thermogravimetric analysis (Iso‐TGA) was employed to determine the migration rate in cured and unfilled HTPB binder systems compared to the dioctyladiphate (DOA) plasticizer. It was found that the exudation of the NPB plasticizer is slower than that of the DOA plasticizer. Thus, the NHTPB/NPB binder system (binder/plasticizer) presents more convenient mechanical properties than HTPB/DOA and is a promising new energetic binder system for polymer bonded explosives.     

Durable antimicrobial finish of cotton fabrics

Cotton fabrics were treated with Biopag, which does not have any functional groups that are reactive toward cellulose, using crosslinking agents or a binder, for the purpose of imparting a durable antimicrobial finish. In this respect, it was found that the crosslinking agents were more effective than the binder. It was confirmed by FT‐IR that the characteristic split peaks of Biopag were still seen even after repeated launderings. The crosslinking agents deteriorated the whiteness and tensile strength of the Biopag‐treated cotton fabrics, while the wrinkle recovery angles (WRAs) were significantly improved. The one‐step padding of Biopag and the crosslinking agent was found to be superior to the two‐step padding method in which Biopag padding was followed by padding of crosslinking agent in respect of WRA, whereas the whiteness and tensile strength were vice versa. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007     

Proton conducting acid-base mixed materials under water-free condition

In recent years, a lot of attentions have been paid for a development of water-free polymer electrolyte membranes fuel cells (PEMFC) at intermediate temperatures (above 100 °C) because of many technological advantages of higher temperature operation. However, the proton conductivity of conventional polymer membranes under water-free condition is usually very low and the polymeric membranes are not stable at higher temperatures. So, the development of non-hydrous proton conducting membrane under water-free condition has been a state of the art issue in the advanced PEMFC technology. In this study, non-hydrous protonic conducting material was prepared by the mixing of acidic surfactant of mono-dodecylphosphate (MDP) and organic base of benzimidazole (BnIm). The proton conductivity and thermal stability of MDP-BnIm mixed material increased with the mixing ratio of BnIm. Maximum proton conductivity of MDP-BnIm mixed material (BnIm mixing ratio of 200 wt.%. vs. MDP) was found to be 1×10⁻³ S cm⁻¹ at 150 °C under water-free condition.     

Mine tailings-based geopolymers: Properties,applications and industrial prospects

The use of mine tailings (MTs) as aggregates or precursors of alkali-activated materials and geopolymers (GPs) seems to be a promising approach for their sustainable utilization since it allows not only reducing the dynamics of MTs accumulation in the environment and the environmental damage they cause but also it combines the advantages geopolymer technology that is associated with reducing the carbon footprint, the ability to utilize other technogenic aluminosilicate waste, the versatility of the properties of GPs as a general construction binder. Taking into account the complex material composition of mine tailings, and relatively little knowledge of the features of the geopolymerization of tailings and the influence of various factors on the properties of MTs-based geopolymers, there is now a need to generalize these aspects and assess the prospects for possible applications. This article is a generalization and a detailed analysis of the relationship between structural, mechanical, and thermal properties, durability, leaching behavior, and other important characteristics of MTs-based geopolymers. Here, in addition to the key fundamental aspects of the formation of properties of MTs based geopolymers, well-known examples of their applications in binder pastes, mortars, and concretes, as well as bricks, backfill materials, adsorbents, porous materials, and other promising applications are considered in detail. In addition, economic and production aspects are also discussed.     

Reactive and non‐reactive binders in glass/vinyl ester composites

This study characterizes and evaluates two types of preform binders: reactive thermosets, and non‐reactive thermoplastics. The interply adhesion between woven glass plies was measured as a function of binder type, concentration, and preforming conditions. It was found that reactive binders offer the potential to provide much larger interply adhesions between glass plies in a preform than thermoplastics, and are thus superior choices for the fabrication of complex‐shaped preforms requiring little or no springback. Laminated composite panels fabricated from preforms with varying binder concentrations were evaluated in regards to their interlaminar properties. It was found that both binder types degraded the interlaminar shear strength of a woven glass reinforced vinylester composite. Additionally, composite laminates made from preforms containing the thermoplastic binder showed decreases in the interlaminar fracture toughness of the composite by approximately 60%. However, composite laminates fabricated from preforms utilizing the reactive epoxy binder showed an increase in fracture toughness of approximately 47%. Hence, it is concluded that a range of interlaminar properties can be achieved depending on the type of binder, the amount of binder, and the processing of the binder and also that of the composite itself. POLYM. COMPOS., 26:377–387, 2005. © 2005 Society of Plastics Engineers     

永磁材料粘结剂的研究现状与应用

由于粘结的钕铁硼磁体具有优异的磁性能，其商业价值备受人们的关注。本文介绍了粘结钕铁硼磁体常用的粘结剂类型、研究现状及提高磁性能的方法，此外还介绍了这类粘结剂的应用及发展前景。     

Binder content influences on chloride ingress in concrete

The reported study looked at the effect of reducing free water contents, and thereby binder contents, on the ingress of chloride in concrete. Concretes with equal water/binder ratio (and design strength), but with water contents reduced by up to 30 litres/m³, were tested for chloride diffusion (D) and penetration. The quality of the microstructure was inferred from initial surface absorption tests (ISAT). The results show no practical difference in chloride durability between the corresponding concretes, and that reducing the binder content, (providing that the water/binder ratio is maintained) is not likely to be detrimental. However, the results reported underline the importance of binder type, in this case PFA. Implications of the results are discussed and, in light of the findings, whether specifications which demand minimum cement Contents are justified.     

用于耐火材料结合剂的中间相沥青研究

介绍了环保型结合剂的中间相沥青的发展过程及制备方法 ,及其在含碳耐火材料结合剂应用中表现出的优良性能,并分析了国内外中间相沥青的研究现状及其在耐火材料结合剂中的应用前景。