煅烧高岭土在药用橡胶瓶塞中的应用

研究了国内煤系煅烧高岭土在氯化丁基橡胶瓶塞中的应用。通过TEM、粒度分析仪及化学分析等多种检测及分析手段对补强填料的性能进行了初步探讨，结果表明，锻烧高岭土微粉的形状、粒径、填充量对药用丁基橡胶的硫化性能有很大的影响。国内煅烧高岭土易于分散，胶料具有适宜的硫化时间和良好的硫化性能。能达到美国煅烧高岭土的水平。     

煅烧高岭土在药用溴化丁基橡胶瓶塞胶料中的应用

研究煅烧高岭土(国产普通煅烧高岭土PBK1250、进口普通煅烧高岭土Iceberg和氨基硅烷偶联剂改性陶土Burgess2211)在药用溴化丁基橡胶(BIIR)瓶塞胶料中的应用。结果表明:采用普通煅烧高岭土PBK1250的胶料与采用普通煅烧高岭土Iceberg的胶料硫化特性相当;采用改性陶土Burgess2211的胶料硫化速度较快,硬度、定伸应力和撕裂强度较高,拉断永久变形较小,采用普通煅烧高岭土Iceberg的胶料的拉断永久变形较大;采用普通煅烧高岭土Iceberg的药用BIIR瓶塞耐萃取性较好,采用普通煅烧高岭土PBK1250的药用BIIR瓶塞与药品的高温相容性略高。     

煅烧高岭土对EPDM性能的影响

研究煅烧高岭土对EPDM性能的影响。结果表明，煅烧高岭土对EPDM胶料的硫化有延迟作用。但并不显著；煅烧商岭土对EPDM有一定的补强作用，随着煅烧高岭土用量的增大，EPDM硫化胶邵尔A型硬度、定伸应力、拉断伸长率和拉断永久变形增大．拉伸强度和撕裂强度先增大后减小；适量的煅烧高岭土可改善EPDM硫化胶的耐溶剂性能。     

煅烧高岭土对卤化丁基橡胶性能的影响

分别对用不同粒径煅烧高岭土填充的卤化丁基橡胶进行了性能研究,由于团聚,胶料的硫化性能和物理机械性能受到了很大影响。在此基础上进一步对改性高岭土进行了研究。改性高岭土在胶料中的分散性可以得到明显改善,采用Si-69改性后胶料的综合性能最佳。高岭土的用量对胶料的性能也产生很大的影响。     

医用橡胶瓶塞生产工艺对其物化性能影响

介绍了在生产医用橡胶瓶塞过程中混炼和后处理等工艺对产品物化性能的影响。     

硅橡胶补强填料的研究进展

纯硅橡胶的机械强度很低,添加补强填料是提高硅橡胶物理机械性能的主要手段。简要介绍了近年来有关气相法白炭黑、沉淀法白炭黑、短纤维与碳纳米管、纳米碳酸钙在硅橡胶补强中的应用研究概况。     

丁基胶药用瓶塞质量控制

丁基胶药用瓶塞质量控制湖北华强药用包装制品厂李吉生，程继刚瓶塞是瓶装药物的主要封口件和导出件，由于其与药物直接或间接接触，因此必须满足药物对其的要求。从生物角度要求，瓶塞必须无致热、无毒性：从卫生角度着眼，瓶塞必须洁净无菌；从药品的贮存来讲，瓶塞必须...     

两种补强填料对氟醚橡胶性能的影响

设计补强填料（炭黑N990/硫酸钡）用量和并用比不同的9个试验配方,研究炭黑N990/硫酸钡用量和并用比对氟醚橡胶胶料硫化特性、耐低温性能、物理性能、耐热空气老化性能、耐介质性能和压缩永久变形的影响。结果表明：炭黑N990/硫酸钡用量和并用比对氟醚橡胶硫化胶性能影响较大;随着炭黑N990/硫酸钡用量的增大,氟醚橡胶硫化胶的力学性能更好;氟醚橡胶硫化胶的耐低温性能主要由橡胶的分子结构决定,同时含胶率越高,硫化胶的耐低温性能越好;氟醚橡胶硫化胶的耐介质性能与其交联程度有关,当炭黑N990/硫酸钡用量增大时,橡胶与其形成的交联网络更加密集,硫化胶的耐介质性能提高。     

硅烷化纳米二氧化硅填料补强橡胶的动态性能测定

虽然静态力学性能对轮胎的使用寿命起了重要作用,但是对动态性能也要有足够的重视。事实上,随着轮胎磨损,其性能就像一枚硬币的两面。     

煅烧高岭土制备系列纳米分子筛及表征

采用直接加入法制备了纳米级的系列沸石分子筛，其特点在于合成时不用胺类模板剂，不用导向剂，而是用廉价易得的天然矿高白超细煅烧高岭土、氢氧化钠为原料，按一定配比，用水热晶化法直接合成。其优点为：合成原料成本低，合成工艺简单，生产周期短，产品结晶度好，避免了胺对环境的污染。并通过XRD、TEM、TG-DTA等手段对该新型材料进行了表征。     

HNBR补强填充体系的研究

研究了白炭黑及改性酚醛树脂（SP6701）对氢化丁腈橡胶（HNBR）补强效果的影响。结果表明,在N550用量不变的情况下,白炭黑的加入能显著提高HNBR硫化胶的定伸应力和硬度,改善HNBR的耐热空气老化性能;加入SP6701后,胶料的拉伸强度逐渐降低,拉断伸长率先降低后升高,硬度和定伸应力则显著增大,混炼胶的Payne效应则是随着SP6701含量的增加而增强。综合而言,SP6701能够明显提高硫化胶的硬度和定伸应力,但对于其它性能的影响很微弱,甚至会产生相反的影响。     

Organomodified kaolin as a reinforcing filler for natural rubber

China clay (kaolin) has been modified with sodium salt of rubber seed oil (SRSO). SRSO was characterized using X‐ray diffraction (XRD), infrared spectroscopy (FTIR), and differential thermal analysis (DTA). XRD of the unmodified and SRSO‐modified kaolins showed an increase in the d‐(001) spacing of kaolin platelets from 7.15 to 14 Å. FTIR spectroscopy indicated possible grafting of the organic moiety of rubber seed oil (RSO) onto the clay surface. DTA of the SRSO‐modified kaolin indicated that the SRSO is more strongly bound in a constraint environment within the lamellae of kaolin. Natural rubber (NR) mix containing 10 phr of SRSO‐modified kaolin was found to cure faster than that of a similar mix containing unmodified kaolin. NR vulcanizates containing SRSO‐modified kaolin showed considerable increase in tensile modulus, tensile strength, and elongation at break indicating its potential as an organomodified nanofiller. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008     

Reinforcing effect and electrical properties of ethylene‐propylene rubber filled with calcined sepiolite

A mineral sepiolite (magnesium silicate with microfibrilar morphology) was calcined at 325°C and its behavior as filler for ethylene‐propylene (EPM) compounds designed for electrical cable coating was studied. This calcined sepiolite is a material with good dielectric and physical properties and provides a reinforcing effect, increased when is treated with a coupling agent. The performance of this filler was compared to a commercial clay calcined at 1000°C. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 79: 714–718, 2001     

An investigation on the reinforcing potential of red earth as filler for natural rubber compounds

Locally sourced red earth (RE) was air‐dried, pulverized, and screened with a sieve of mesh size 75 nm. It was characterized in terms of its moisture content, loss on ignition, silica content, iodine adsorption number, oil absorption, pH, and metal oxide compositions. Natural rubber, standard Nigerian rubber used for this work was first characterized in terms of its dirt, ash and nitrogen contents, volatile matter, plasticity retention index, and Mooney viscosity. The RE was applied as filler wholly and in blends with standard carbon black, CB (N330) filler in the natural rubber compounding using efficient vulcanization system. The cure and the physicomechanical properties of the compounds and vulcanizates were, respectively, measured as function of filler loading. The results were compared with those of the standard carbon black (N330)‐filled natural rubber. It was found, that the RE‐filled natural rubber showed substantial reinforcement of the rubber, though inferior to carbon black (N330) filled vulcanizates, the tensile strength of the carbon black‐filled vulcanizates is about one half times that of the RE‐filled vulcanizates. The tensile properties of the RE‐filled vulcanizates improved markedly by blending the RE‐filler with the carbon black (N330). © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007     

A study of diatomite and calcined kaoline properties in anticorrosion protective coatings

Comparison of properties of diatomite and kaoline in paints were studied in dependence on their volume concentration (PVC). Model paints were prepared containing increasing filler contents, PVC = 5% up to the critical volume concentration of the pigment (CPVC). The properties of the prepared coatings were tested by laboratory corrosion tests in both the neutral salt mist and the condensation moisture environments. The effect of diatomite and kaoline PVC on mechanical and anticorrosion protective properties of coats based on epoxide and epoxy–ester binders was studied. It was established that diatomite can be used as a filler in anticorrosion protective coatings.     

BIMSM纳米复合材料在药用丁基橡胶塞中的应用

本文主要研究了溴化异丁烯-对甲基苯乙烯共聚物（BIMSM）/高岭土纳米复合材料的性能以及其在药用丁基橡胶塞中的应用。实验结果表明,BIMSM纳米复合材料具有优异的气密性和耐老化性能;用BIMSM纳米复合材料生产的药用丁基橡胶塞的穿刺落屑性能、气密性均有显著的改善。     

Kaolin modified with sodium salt of rubber seed oil as a reinforcing filler for blends of natural rubber,polybutadiene rubber and acrylonitrile–butadiene rubber

Blends of natural rubber (NR) and synthetic rubbers are widely used in the rubber industry to meet specific performance requirements. Further, the emerging field of organomodified clay/rubber nanocomposites could provide a host of novel materials having a unique combination of properties to meet various stringent service conditions. Previous studies have shown that at very low dosages, china clay (kaolin) modified with sodium salt of rubber seed oil (SRSO) improved the cure characteristics and physico‐mechanical properties of NR. Results of the present study show improved cure characteristics and physico‐mechanical properties for blends of NR with butadiene rubber and nitrile rubber containing 4 phr of SRSO‐modified kaolin as indicated by reduction in optimum cure time along with higher tensile strength, tensile modulus and elongation at break for their vulcanizates as compared to those containing unmodified kaolin. The SRSO‐modified kaolin/rubber nanocomposites showed improved flex resistance, reduced heat build‐up, tan delta and loss modulus and higher chemical crosslink density index, indicating a reinforcing effect of the SRSO‐modified kaolin, enabling the nanocomposites to have potential industrial applications. © 2015 Society of Chemical Industry     

丁基橡胶聚合新型超重力反应器工艺

将新型旋转填充床反应器（RPB）应用于阳离子聚合制备丁基橡胶（IIR）过程。实验初步考察了旋转填充床转子转速（N）和聚合温度（T_p）等工艺参数对聚合产物IIR分子量和分子量分布的影响规律。研究结果表明：在实验条件下,当N=1200 r·min^-1、T_p=-100℃时,采用超重力法新工艺制备的IIR的数均分子量达到2.89×10⁵,分子量分布指数达到1.99。同时,物料停留时间小于1 s (现工艺30~60min),单位设备体积的生产效率提高了2~3个数量级。随着N的增大和T_p的降低,聚合产物IIR的分子量升高,而分子量分布变化不大。     

氯化丁基橡胶罩体材料的研究

对国内外的防毒面具罩体材料进行对比分析，选择了氯化丁基橡胶做罩体材料并进行了配方设计实验研究，选出了较好配方，进行了性能对比和防毒面具罩体试制，达到了预期目的。