预分散橡胶助剂母胶粒/片的质量控制

简介预分散橡胶助剂母胶粒/片的质量控制。金属氧化物、短纤维、硫化剂、促进剂、防焦剂、防老剂、发泡剂和粘合剂等橡胶助剂可制成预分散母胶粒/片。预分散橡胶助剂母胶粒/片的载体有丁苯橡胶、天然橡胶、顺丁橡胶、氟橡胶等通用橡胶和特种橡胶。预分散橡胶助剂母胶粒/片的质量控制要点为:橡胶助剂的有效成分含量高,粒径小、分布窄,分散性良好。预分散橡胶助剂母胶粒/片的塑性和隔离效果好,高温下不结块、不粘连。     

预分散和预混合橡胶助剂的概况

简述预分散和预混合橡胶助剂产品开发的目的,介绍硫黄、氧化锌、促进剂、防老剂等预分散和预混合橡胶助剂产品以及芳纶浆粕、橡胶／纳米黏土复合材料、白炭黑／炭黑母胶等预分散橡胶助剂母胶产品的发展概况。     

预分散和预混合橡胶助剂的概况

简述预分散和预混合橡胶助剂产品开发的目的,介绍硫黄、氧化锌、促进剂、防老剂等预分散和预混合橡胶助剂产品以及芳纶浆粕、橡胶／纳米黏土复合材料、白炭黑／炭黑母胶等预分散橡胶助剂母胶产品的发展概况。     

预分散橡胶助剂的质量控制及其在橡胶中的应用

介绍预分散橡胶助剂的质量控制及其在橡胶中的应用。预分散橡胶助剂的质量控制包括组分(橡胶助剂、载体、添加剂)质量控制、生产工艺控制、产品质量控制。与传统橡胶助剂相比,预分散橡胶助剂在橡胶中分散性好,胶料硫化性能稳定,物理性能好。     

《橡胶助剂预分散胶母粒研究与开发》项目通过科技成果鉴定

《橡胶助剂预分散胶母粒研究与开发》项目通过科技成果鉴定     

国内外橡胶助剂进展

简要介绍了国内外橡胶助剂的基本生产情况，新产品及生产技术进展，产品涉及硫化剂，抗硫化返原剂，促进剂，活性剂，防老剂，增塑剂，分散剂，偶联剂，增粘树脂，补强树脂，粘合剂等。橡胶助剂将向品种无毒，成本-效能比更加优化的方向发展，并以绿色化工技术（如充油和造粒工艺，制成预分散体等）改造传统工艺。     

莱茵化学新建橡胶化学品预分散母粒生产装置投产

据美国《橡胶世界》报道,德国莱茵化学公司日前宣布,其投资约700万欧元在德国新建的橡胶助剂预混设备已全面运转。该公司称,新设备采用全球最先进的工艺技术,利用这种预混设备可成功地生产出商品名为Rhenogran的一系列橡胶助剂预分散体。这种由聚合物（如丁苯橡胶或三元乙丙橡胶）和橡胶化学品制成的预分散母粒便于运输和使用,可减少粉尘飞扬,     

橡胶基体预分散母粒的制备和表征

采用预分散包覆造粒法制备橡胶基体预分散母粒。通过扫描电子显微镜、高级流变扩展系统和凝胶渗透色谱对橡胶基体品种、预分散体及其混炼胶进行研究。结果表明:低相对分子质量丁苯橡胶(LMWSBR)与促进剂NS的复合相容性和尺寸均匀性较好;LMWSBR制备的促进剂NS预分散体的临界应变值增大,在低频区域其弹性模量(G′)与频率(ω)的lg G′-lgω曲线出现平台,反映出网络的生成,而其高频区的流动性优于高相对分子质量丁苯橡胶(HMWSBR)制备的预分散体,这对预分散体的储存和加工有利;预分散体混炼胶的焦烧时间更长,加工安全性好。     

莱茵化学新的预分散橡胶化学品母胶粒生产线在青岛投入使用

2006年3月，投资280万欧元新建的预分散橡胶化学品母胶粒生产线在莱茵化学（青岛）有限公司正式投产。随着该新生产线的投产使用，莱茵化学（青岛）有限公司的预分散橡胶化学品母胶粒年生产能力将增长到4800t。     

Preparation of carbon black/natural rubber latex masterbatch in bead form

Carbon black/natural rubber latex masterbatch in the form of spherical beads was prepared according to the acid-precipitation method. High-loading carbon black (40 phr) was incorporated in natural rubber with the aid of a nonionic surfactant (Nonidet P40). Shearing the beads in an internal mixer provided good integration of carbon black in the rubber matrix and hence the high bound rubber content. Results confirmed the contribution of chemical interaction to the bound rubber content. By an oxidation process, the size of modified carbon black was reduced, whereas the large agglomeration took place in the case of partially graphitized carbon black. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 82: 489–498, 2001     

研发工程橡胶加工新技术与新设备的分析与探讨

阐述了在橡胶止水带系列制品和橡胶支座制品加工中的新技术与新设备，并与传统的技术和设备进行比较、分析和讨论，最终认为研发有关工程橡胶加工新技术与新设备是可行的。同时，对研制止水带连续硫化联动生产线和研制橡胶支座注射成型技术与全套设备进行了技术风险评估。     

Research progress on preparation and purification of fluorine-containing chemicals in lithium-ion batteries

With the development of digital products,electric vehicles and energy storage technology,electronic chemicals play an increasingly prominent role in the field of new energy such as lithium-ion batteries.Electronic chemicals have attracted extensive attention in various fields.Characteristics of high-end elec-tronic chemicals are high purity and low impurity content,which requires a very strict separation and purification process.At present,crystallization is a key technology for their separation and purification of electronic chemicals.In this work,the representative fluorine-containing compounds in cathode and anode materials,separator and electrolyte of lithium-ion batteries are introduced.The latest technologies for the preparation and purification of four kinds of fluorine-containing battery chemicals by crystalliza-tion technology are reviewed.In addition,the research prospects and suggestions are put forward for the separation of fluorine-containing battery chemicals.     

胶粉氯化及改性PVC

通过水相悬浮法制备了氯化胶粉,并用氯化胶粉对聚氯乙烯（PVC）进行了改性。结果表明：提高反应温度和延长反应时间都可使胶粉氯含量增加;随氯化胶粉用量的增加,改性PVC的拉伸强度、弯曲强度下降,但其断裂伸长率提高;综合氯化胶粉的氯含量对PVC各项力学性能的影响程度,取氯质量分数为20％～40％时可对PVC起到较好的增韧效果,同时断裂伸长率增加。     

A comparative study of short nylon fiber—Natural rubber composites prepared from dry rubber and latex masterbatch

A novel method for the preparation of short nylon fiber–natural rubber composites was developed in which short fibers chopped to approximately 6 mm were incorporated in the latex stage and processed into sheet form. By this method, mixing cycle time was reduced without compromising the fiber dispersion. Fiber breakage during mixing was reduced. The new composites when compounded with a dry bonding system based on hexamethylenetetramine, resorcinol and hydrated silica (HRH) showed improved modulus, tensile strength and abrasion resistance compared to conventional composites. Tear strength, resilience, and compression set were similar to the conventional composites. SEM analysis indicated better interaction between matrix and fibers in the case of latex master batch. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008     

化学/酶复合催化法制备生物基化学品研究进展

化学催化与酶催化复合法制备生物基化学品可兼具生物催化剂的高效、高选择性和化学催化剂的稳定性(高温下)等优点,且原料易得、工艺简捷高效、环境友好,以化学/酶复合催化一步法反应制备糖醇、氨基酸和其他生物基化学品中的应用来阐述此方法的优势和意义,并对其在生物质炼制过程的应用进行了展望。     

丁基橡胶及卤化丁基橡胶阻尼材料的研究进展

介绍了丁基橡胶的阻尼性能及应用,阐述了丁基橡胶、氯化丁基橡胶及溴化丁基橡胶阻尼材料的研究进展.指出提高损耗因子和拓宽阻尼温域是丁基橡胶基高性能阻尼材料的研究方向,丁基橡胶与其他橡胶共混、开发合适的硫化体系和填料是提高丁基橡胶基阻尼材料性能的重要手段.     

Effects of radiation pretreatments on the rubber adsorption power and reinforcing properties of fillers in rubber compounds

Radiation damage to fillers such as carbon black, graphite and silica induced by high doses of γ‐radiation or neutrons dramatically increases their ability to adsorb rubber irreversibly. In fact, the ‘bound rubber’, ie the amount of non‐extractable rubber which remains irreversibly linked to the filler matrix, increases dramatically in radiation‐treated fillers. The increased adsorption power of radiation‐damaged fillers has been attributed to the formation of a higher concentration of surface defects in the form of trapped free radicals, fullerene‐like structures and other kinds of defects. The mechanical properties of rubber compounds filled with radiation‐treated carbon blacks show a significant increase in their reinforcing effects, in line with the increased ability to form ‘bound rubber’. © 2001 Society of Chemical Industry     

硅橡胶的研究进展

介绍了硅橡胶的特点。综述了硅橡胶的分类(包括高温硫化型硅橡胶、室温固化型硅橡胶等)、改性方法(包括共混改性、填料改性等)及其在医疗领域(包括医疗器械、药物缓释体系和体外用品等)和汽车领域中的应用。最后对硅橡胶的发展前景进行了展望。     

凝聚法制备粉末橡胶的研究进展

能源短缺和环境污染等问题的日益严重,促使节能环保的连续混炼成为未来炼胶设备的发展方向,因此,对连续混炼的原料——粉末橡胶的研究将成为研究热点。综述了凝聚法制备粉末橡胶的方法及在橡胶工业中的应用情况,并对粉末橡胶的前景进行了展望。