仪化联合公司将建设全国最大PBT工厂

仪化联合公司将建设全国最大ＰＢＴ工厂３月２２日，仪化联合公司ＰＢＴ项目的“可行性研究报告”在会议中心通过了中国纺织总会科技发展部和联合公司有关部门专家的论证，标志着这个全国最大的ＰＢＴ生产厂即将在仪化投入建设．ＰＢＴ树脂可以纺丝或者用于色母粒的载体．...     

吸附粒子浮选法回收碘的研究

以钠质膨润土为吸附载体、以ＣＴＭＡＢ为捕收剂，进行了碘的浮选回收研究。在弱酸性条件下浮选，碘的回收率＞９９％，残余液碘的浓度仅为２．２～２．８ｍｇ／Ｌ．     

用草酸钴生产宽温变换催化剂新工艺

通过试验证实了用草酸钴作钴源，不用氨水作介质，一釜溶解钴钼钾前驱体，一步共浸渍载体γ－Ａｌ２Ｏ３生产球形钴钼宽温变换催化剂新工艺的可行性。使产品ＨＢ－４Ｑ主要性能指标与常规氨络合法产品ＨＢ－１Ｑ处于同等水平，而生产成本降低约２０００元／ｍ     

J-95中温固化载体胶膜

介绍了航空结构材料（蜂窝夹层结构）用Ｊ－９５中温固化载体胶膜的性能，且与直九机 ＭＥＬＴ ＢＯＮＤ １１１３０６胶膜性能进行了对比。     

稀土改性Ni／γ－Al_2O_3催化剂合成甲基异丁基酮的研究

本文成功地研制出一种以γ－Ａｌ２Ｏ３为载体，负载镍、镧，用于丙酮加氢合成甲基异丁基酮（ＭＩＢＫ）的新型催化剂。并研究了不同稀土金属，不同焙烧温度，不同反应温度，不同空速条件及不同来源氢气等因素对催化性能的影响。     

NR／BR9000输吸食品胶管的研制

用ＮＲ／ＢＲ９０００为８０／２０（质量份）的并用胶，并选取无毒、无污染的加工助剂，生产了食品胶管，输吸的食品类流质、半流质不变色、不变味。该食品胶管无毒、无污染、无有害载体，日光化不变色。卫生的指标、力学指标符合国家标准。     

BY－2型裂解汽油加氢催化剂试产成功

ＢＹ－２型裂解汽油加氢催化剂试产成功南化（集团）公司催化剂厂于１９９４年夏季生产了近１５吨ＢＹ－２型裂解汽油加氢催化剂。该催化剂是由北京燕山石化公司研究院研制的以钛为载体的新型催化剂。该催化剂经燕山石化研究院检测和装填使用，证明其性能超过了国外同类产...     

国内简讯

国内简讯ＢＹ－２型裂解汽油二段加氢催化剂工业化获得成功国内首创的以氧化钛（ＴｉＯ２）－氧化铝（Ａｌ２Ｏ３）复合物为载体的新型加氢精制催化剂──ＢＹ－２型裂解汽油二段加氢催化剂工业化获得成功，并通过中国石化总公司组织的工业开发和工业应用鉴定。北京燕化研...     

几种固体超强酸的合成及其应用

研究了９种载体（以Ｘ表示）及负载硫酸的Ｘ－ＳＯ４＾２－型固体超强酸的合成以及不同合成条件对催化活性的影响，在制备ＤＢＰ和ＤＩＢＰ的酯化反应中的结果表明，所合成的９种不同Ｘ－ＳＯ４＾２－中，以ＮＣ－ＳＯ４＾２－的催化活悸最为理想。     

聚合物载体－稀土金属络合物的研究Ⅺ．聚［苯乙烯－甲基丙烯酸β（甲基亚硫酰基）乙酯］载体－氯化钕络合物催化体系丁二烯聚合的动力学参数

采用膨胀计法，研究了以Ａｌ（ｉ－Ｂｕ）＿３为助催化剂，聚［苯乙烯－甲基丙烯酸β（甲基亚硫酰基）乙酯］载体－氯化钕络合物为主催化剂的丁二烯聚合动力学。丁二烯均聚时聚合速率对单体浓度和主、助催化剂浓度均呈一级关系，与氯化钕二甲基亚砜络合物－Ａｌ（ｉ－Ｂｕ）＿３体系基本一致，但前者的表现活化能仅为１８．７ｋＪ／ｍｏｌ，后者为４６９．ＫＪ／ｍｏｌ，前者的钕利用率大约是后者的５倍。     

Carrier dyeing of polyphenylene sulphide fabric with disperse dye

Polyphenylene sulphide is considered to be a high‐performance thermoplastic material and has been used in many areas over the past few decades. But the application of polyphenylene sulphide fabric used for protective clothing is limited because of difficulties in its dyeing and printing. In this work, carrier dyeing of polyphenylene sulphide fabric with disperse dye is discussed, and the effect of the structure of the carrier, dyeing temperature, dyeing time, usage of carrier and usage of dye on colour strength of the dyed sample and the percentage of dye exhaustion were investigated. In addition, the glass transition temperature, crystalline structure and orientation degree of treated polyphenylene sulphide fibre with benzyl benzoate were measured by differential scanning calorimetry, X‐ray diffraction analysis and velocity‐oriented tester, respectively. The results indicated that benzyl benzoate could increase the percentages of dye exhaustion and colour strength values, while at the same time reduce the glass transition temperature and orientation degree of the treated polyphenylene sulphide fibre. Thus, it would be beneficial to the diffusion of the dye molecules into the amorphous region of the fibre. Furthermore, the decrease of tensile strength and limiting oxygen index of the dyed polyphenylene sulphide sample was very little, and the colour fastness and levelness of the dyed polyphenylene sulphide samples were also satisfactory.     

The low-temperature dyeing of polyester fabric using ultrasound

The use of polyester fabrics in a project to investigate the application of real wax batik print styles necessitated the application of a low-temperature dyeing technique. Consequently an ultrasonic dyeing method was explored, in which the use of appropriate pre-swelling of the substrate had been reported to give acceptable shade depths at 50d?C. Experiments involving three separate disperse dyes demonstrated little advantage for ultrasonic dyeing over conventional methods, particularly when carrier was incorporated into the dyebath. The depths of shade obtained were considerably inferior to those achievable in commercial dyeing at the boil with carrier included.     

避蚊胺对间位芳纶分散染料载体染色的影响

为了寻找简便环保、成本低廉的芳纶染色方法,通过差示扫描量热法(DSC)、X射线衍射法(XRD)等方法,考察了避蚊胺N,N-二乙基-间甲基苯甲酰胺(DEET)对间位芳纶结构的影响,并将DEET用于间位芳纶分散染料染色,测试了染色条件对分散染料上染率的影响。结果表明:经DEET处理后,间位芳纶的玻璃化温度降低,结晶度和纤维强力基本不变;DEET可以使分散染料对间位芳纶的染色上染率达到85%~90%,DEET用作间位芳纶分散染料染色是可行的。间位芳纶分散染料高温高压DEET载体染色的较佳工艺为:染色温度130℃,染色时间60 min,DEET质量浓度3 g/L,浴比1∶20。     

The carrier dyeing of synthetic fibers

The mode of action of carriers in augmenting the rate of dyeing of disperse dyes with acrylic and polyester fibers is discussed in terms of the plasticizing action of the carrier. It is shown that the effectiveness of a carrier is determined by its ability to reduce the glass transition temperature of the fiber and not by the fiber swelling. The rate of dyeing as measured by the diffusion coefficient of the dye is shown to be uniquely related to the difference between the dyeing temperature and the glass transition temperature (T – T_g). In the light of these results, some aspects of carrier action in dyeing from perchlorethylene are discussed. Treatment of polyester fibers with carrier also increases crystallinity. Changes in diffusion for a series of copolyesters have been correlated with the long spacing obtained from small angle X-ray scattering (SAXS).     

Studies on Some New Reactive Disperse Dyes

The preparation of some new reactive disperse dyes which can be used for dyeing 100% synthetic and fibre blends is described. The preparation of some disperse dyes containing a chlorohydrin group is also described. This radical is the precursor of the epoxide reactive group in the active form of these dyes. Dyeings produced on various fibre blends by a two–stage high–temperature and by a carrier–dyeing technique are assessed. It was found that dyeings produced by the high–temperature technique were brighter, more level and possessed much better technical properties than those obtained using the carrier–dyeing method. The fastness properties of dyed samples were determined and found to be comparable with those of conventional disperse and reactive dyes. The colour yield was also determined in order to examine the possibility of obtaining deep dyeings on blended fibres, and to evaluate the potential commercial use of these dyes for dyeing blends as well as 100% synthetic–polymer fibres.     

The Significance of Theoretical Results in the Dyeing of Acrilan 16 with Basic Dyes from an Anhydrous Perchloroethylene Dyebath

Theoretical principles used in an investigation of the mechanism of carrier dyeing and the plasticization of acrylic fibres have been applied successfully to the dyeing of Acrilan 16 with basic dyes from an anhydrous solvent dyebath. Part I deals with the selection of plasticizing agents and Part II describes the dyeing procedure and properties of the resulting basic dyeings.     

Carrier‐free dyeing of radiation‐grafted polyester fabrics with disperse dyes

Carrier‐free dyeing of radiation‐grafted polyester fabrics with disperse red dye was studied in the temperature range 283–363 K. 1‐vinyl 2‐pyrrolidone (NVP), acrylic acid (AA) or their mixture was used to graft poly(ethylene terephthalate) (PET) fabric. The effects of pH of the dye solution, graft yield (GY), dyeing time (t), dye concentration (C), and dyeing temperature (T) on the colour difference (CD) of PET fabric were studied. The best dyeing condition was achieved at pH 5.5. CD increases linearly with the increase in GY, with slopes depending on the type of grafted copolymer. CD increased rapidly as the dyeing time increased; this was followed by a relatively slow dyeing rate within a few minutes. The initial dyeing rate (R) was found to increase with an increase in C and T. The dyeing rates for all grafted samples followed 0.35‐order kinetics and are temperature‐independent. Average activation energy 9.26 kJ mol^?1 is calculated for the dyeing process and is independent of the fabric treatment. Pre‐exponential rate constants 1976, 1839, and 1579 (CD/GY) s^?1 were calculated for dyeing PET samples grafted with AA/NVP mixture, NVP and AA, respectively, while 1074 CD s^?1 was evaluated for carrier dyeing of ungrafted fabric. Analysis of the kinetic parameters and the dyeing mechanism revealed that dyeing PET fabric was diffusion‐controlled. Grafting PET fabric improved significantly the dyeing affinity of the DR dye over ungrafted samples dyed in solutions containing a carrier. Copyright © 2005 Society of Chemical Industry     

Use of a new component during formation of insoluble azo dyes on the surface of blended fabric

It was found that methyl phloroglucinol exhibits surface-active properties. The MPG adsorption isotherms can be assigned to class S-2 in the Giles classification. In adsorption of MPG, a bimolecular layer is formed. A principle was formulated for selecting the conditions for dyeing with insoluble azo dyes on textile materials made from a fibre blend where the colors have high strength indexes. It was shown that MPG, not previously used as an azotol in dyeing blended fabrics (wool + Nitron) by formation of insoluble azo dyes on the fibre, and this allows expanding the color range and improving the technology for dyeing textile materials.     

Dyeing and fastness properties of phthalimide‐based alkali‐clearable azo disperse dyes on poly(ethylene terephthalate)

The properties of a series of phthalimide‐containing azo disperse dyes and azo dyes with N‐methyl phthalimide moieties in their diazo component were investigated and compared when used to colour polyethylene terephthalate. The N‐substitution of the phthalimide gave a hypsochromic effect on the colour change and better colour yields on poly(ethylene terephthalate) fabrics, probably because of the electron‐donating property of the methyl group and the higher hydrophobicity of phthalimide‐containing azo dyes compared with those containing phthalimide moieties. The results show that phthalimide‐based azo disperse dyes have excellent dyeing fastness properties and that high wash fastness can be achieved using alkali clearance. This alternative clearance method is important for reducing the environmental impact of the dyeing process by replacing reductive clearing and, in particular, by removing the need for sodium hydrosulphite, which creates a high biological oxygen demand when released in conventional disperse dyeing effluent and which generates aromatic amines.     

不锈钢基PbO2电极电催化氧化降解甲基橙性能的研究

本研究以自制的不锈钢基PbO2电极对25mg·L^-1的甲基橙溶液进行电催化氧化降解。考察了电流密度、支持电解质浓度、溶液pH值、温度等因素对甲基橙脱色率的影响,确定了电催化氧化甲基橙的最佳反应条件,即电流密度为50mA/cm^2,支持电解质Na2SO4的浓度为0．04mol·L^-1,降解20min后,甲基橙脱色率可达到90％以上。本研究还对几种不同印染废水进行了电催化氧化降解,结果表明,不锈钢基PbO2电极对不同的印染废水均有较好的脱色效果。