VMI公司轮胎成型机获创新奖

VMI公司因为其设计制造的产品Maxx轮胎成型机在今年德国汉堡举办的轮胎技术博览会上获得轮胎制造创新与卓越奖。     

利用国际航展平台 展示“三环”航胎风采

在10月31日-11月6日举办的第六届珠海国际航空航天展览会期间，蓝宇航空轮胎发展公司（曙光橡胶工业研究设计院）与来自国内外航空界的朋友，进行了技术与商业合作方面的交流。与巴基斯坦驻华大使馆武官进行了商业洽谈，达成了2007年向巴方提供航空轮胎的合作意向；与伊朗驻华大使馆高级国防代表讨论了为伊方新规格战机用航空轮胎的研发提供技术合作方面的问题。通过珠海国际航展，加强了昊华（南方）曙光院与国际相关领域的交流。进一步提高了“三环”航空轮胎的国际知名度。为今后开拓国际市场和参与国际竞争打下了基础。     

国外轮胎新技术新产品发展动向及对中国轮胎产业的建议

2月19-21日，德国2008年科隆轮胎技术研讨会暨展览会召开，国外大轮胎公司及一些著名老牌企业均参加了技术研讨会，并对自已新的研究成果或课题做了不同程度的介绍。     

莱茵化学公司积极满足中国轮胎市场的需求

在2011年中国国际橡胶技术展览会中．莱茵化学公司（朗盛集团的全资子公司）宣布为一站式地满足中国轮胎制造商的需求．己向中国轮胎市场推出了综合性的脱模剂、高性能的Rhenoshape硫化胶囊产品以及加工助剂。     

中国橡胶轮胎行业展会在上海举办

第十二届中国国际橡胶技术展览会（RubberTech China2012）和第六届亚洲埃森轮胎展（Reifen China 2012）于11月14日在上海新国际博览中心召开，同期举办的还有“第三届汽车及工程用橡胶制品展”、     

荷意公司合作研发出MMT轮胎生产线

据国外媒体报道，荷兰VMI公司和意大利马朗责尼（Mararlgoni）公司合作，研发一种称之为MMT的轮胎生产线，MMT即集成轮胎制造（ModuIar Tyre Mallufacttlring）。据介绍，MMT由1台四鼓成型机配6分挤出机、6台双模液压硫化机、1台喷涂机、1套材料准备装置、1台总控制器、1套质量控制系统6大部分组成。根据协议，VMI提供轮胎成型机，包括成型鼓及辅助装置；马朗贡尼提供挤出机及缠绕装置，同时负责总装。     

第六届中国国际轮胎及橡胶技术展览会在上海举行

2006年11月20~22日，由中联橡胶（集团）总公司主办、中国橡胶工业协会和全国橡塑设计技术中心协办的第六届中国国际轮胎及橡胶技术展览会在上海国际展览中心举行。     

持续创新成就VMI“百年老店”——中国橡胶工业协会赴欧考察团纪行之二

正5月23日~6月2日,以中国橡胶工业协会副会长兼秘书长徐文英为团长的中橡协赴欧洲考察团一行8人,对欧洲橡胶工业进行了为期11天的参观考察。考察团参观了5月24~27日在德国埃森市举办的2016德国埃森轮胎展和欧洲国际橡胶技术展,考察了荷兰VMI、比利时贝卡尔特公司并进行了技术交流,拜访了欧洲轮胎制造商协会并举行了中欧轮胎企业研讨会。     

轮胎检测专用设备技术研讨会在京召开

轮胎检测专用设备技术研讨会在京召开中国吴华化工（集团）总公司、化工部北京橡胶工业研究设计院（北院）、德国萨马格（Ｓａｍａｇ）检测技术股份有限公司于１９９１年１０月２９—３０日在北京王府饭店联合举办了轮胎检测专用设备技术研讨会，中联橡胶总公司以及有关轮...     

莱茵化学亮相中国国际橡胶技术展

莱茵化学公司于2011年11月22～24日在上海新国际博览中心举办的中国国际橡胶技术展览会期间,面向橡胶行业展示了其品种丰富的产品组合。莱茵化学将重点推出其用于轮胎制造的     

Victrex® poly(ethersulfone) (PES) and Victrex® poly(etheretherketone) (PEEK)

Properties of two high performance engineering thermoplastics, amorphous polyethersulfone (PES) and semicrystalline polyetheretherketone (PEEK), are discussed. Both resins can be processed by conventional techniques, compounded with high performance fibers, and have high service temperature (up to 300°C). Due to the amorphous character PES can be dissolved and spray coated into metals.     

Photopyroelectric Spectroscopic Studies of ZnO-MnO(2)-Co(3)O(4)-V(2)O(5) Ceramics

Photopyroelectric (PPE) spectroscopy is a nondestructive tool that is used to study the optical properties of the ceramics (ZnO + 0.4MnO(2) + 0.4Co(3)O(4) + xV(2)O(5)), x = 0-1 mol%. Wavelength of incident light, modulated at 10 Hz, was in the range of 300-800 nm. PPE spectrum with reference to the doping level and sintering temperature is discussed. Optical energy band-gap (E(g)) was 2.11 eV for 0.3 mol% V(2)O(5) at a sintering temperature of 1025 °C as determined from the plot (ρhυ)(2)versushυ. With a further increase in V(2)O(5), the value of E(g) was found to be 2.59 eV. Steepness factor 'σ(A)' and 'σ(B)', which characterize the slope of exponential optical absorption, is discussed with reference to the variation of E(g). XRD, SEM and EDAX are also used for characterization of the ceramic. For this ceramic, the maximum relative density and grain size was observed to be 91.8% and 9.5 μm, respectively.     

(Ba_(1-α)Sr_α)_(4.8)(Sm_(0.7)La_(0.3))_(8.8)Ti_(18)O_(54)陶瓷的微波介电性能

采用固相合成法制备了(Ba(1-α)Srα)4.8(Sm0.7La0.3)8.8Ti18O54(α=0.1～0.5)系陶瓷,表征了该陶瓷的相组成和显微结构,测试了微波介电性能.结果表明:α=0.3时,(Ba(1-α)Srα)4.8(Sm0.7La0.3)8.8Ti18O54系陶瓷为单相的新钨青铜结构固溶体.α>0.3时,相继出现了第二相BaLa2Ti4O12和La0.66TiO2.993.随α的增加,(Ba(1-α)Srα)4.8(Sm0.7La0.3)8.8Ti18O54系陶瓷的相对介电常数(εr)先增大后有所波动,品质因数(Qf)先增大后减小,谐振频率温度系数(τf)单调减小.α=0.3时,在1 350℃烧结的陶瓷的微波介电性能最佳:εr=98.77,Qf=5184GHz,τf=10.9×10-6/℃,优于不掺杂的BaO-Sm2O3-TiO2陶瓷的.     

Calcium silicate hydrate (II) (“C-S-H(II)”)

This semicrystalline phase, originally named ‘calcium silicate hydrate(II)’ by Taylor (1950), has been studied with X-rays, electron optics, chemical investigation of silicate anion type, infrared spectra, and thermal methods. It is structurally related to jennite (C₉S₆H₁₁) and probably also to the fibrous CSH of cement pastes, the three phases forming a sequence of decreasing crystallinity. The specimen studied had approximate composition C₂SH_3.2 after standing over saturated CaCλ₂ at about 15°C. CSH(II) contains metasilicate chains and pyrosilicate groups and has a disordered layer structure. Much of the water can be lost reversibly without significant change in lattice parameters.     

Poly(butadiene-acrylic acid(g)acrylonitrile(g)acrylic acid)

Summary In the present work we describe, the synthesis and characterization of a new gel obtained by crosslinking a cooligomer of butadiene-acrylic acid (BuAA), by reaction with acrylonitrile and acrylic acid. The purified product was characterized by FTIR, elemental analyses and scanning electronic microscopy. The thermal properties were studied and swelling indexes were determined in different solvents and at different pH values. The capacity of poly(butadiene-acrylic acid(g)acrylonitrile(g)acrylic acid) [gel A] to separate different organic substances, such as amino acids and colorants, was determined.     

Thermal studies of blends of poly(phenylene sulfide) (PPS) with poly(phenylene sulfide sulfone) (PPSS) and with poly(phenylene sulfide ether) (PPSE)

The miscibilities of poly(phenylene) sulfide/poly(phenylene sulfide sulfone) (PPS/PPSS) and poly(phenylene) sulfide/poly(phenylene sulfide ether) (PPS/PPSE) blends were invesigated in terms of shifts of glass transition temperatures T_g of pure PPS, PPSS, a dn PPSE. The crystallization kinetics of PPS/PPSS blends was also studied as a function of molar composition. The PPS/PPSS and PPS/PPSE blends are respectively partially and fully miscible. PPSE shows a plasticizing effect on PPS as does PPS on PPSS, which necessarily improves te processibility in the respective systems. We can control T_g and melting temperature T_m of PPS by varying amounts of PPSE in blends. The melt crystallization temperature T_mc of PPS/PPSE blends was higher than that of the PPSE homopolymer. Therefore, these blends require shorter cycle times in processing than pure PPSE. The overall rate of crystallization for PPS/PPSS blends follows the Avrami equation with an exponent ?2. The maximal rate of crystallization for PPS/PPSS blends occurs at a temperatre higher by 10°C than that for PPS, while the crystallization half time t_1/2 is 4 times shorter. In the cold crystallization range, crystal growth rates increase and Avrami exponents decrease significantly as the temperature increases.     

Photooxidative stability of substituted poly(phenylene vinylene) (PPV) and poly(phenylene acetylene) (PPA)

The addition of side groups to improve the photooxidative stability of polymers used in polymer-based light-emitting diodes (LEDs) is explored. Infrared spectroscopy and computational chemistry techniques are used to study the effects of chemical substitution of the reactive vinylene moiety in poly(phenylene vinylene) (PPV). The bond order of the vinylene group in small oligomers is calculated using semiempirical techniques to assess the improvement in stability toward oxidants such as singlet oxygen. We find that PPV dimers allow relative comparisons across a range of possible substitutions. Experimental results correlate well with these calculations. The addition of electron-withdrawing substituents, such as nitrile groups, to the vinylene moiety is found to be particularly effective in reducing the reactivity of alkoxy-substituted PPV toward singlet oxygen. The photooxidative stability of a poly(phenylene acetylene) (PPA) derivative is also studied. It appears that this family of polymers is more stable toward photooxidation than are its PPV analogs. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 69: 2451–2458, 1998     

Chemical cross-linking of conducting poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) using poly(ethylene oxide) (PEO)

Hybrid films of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) were prepared with different molecular weights of poly(ethylene oxide) (PEO). The cross-linking reaction between PEO and PEDOT:PSS was performed at high temperature and confirmed by using differential scanning calorimeter (DSC), contact angle measurement, and solid-state ¹H NMR. The effect of chemical reaction on the conductivity and morphology of these hybrid films was studied by using 4-point probe and atomic force microscope (AFM), respectively. As-spun PEO/PEDOT:PSS films have lower electric conductivity due to the addition of nonconductive PEO, and exhibits no molecular weight dependence on conductivity. After chemical cross-linking reaction at high temperature, only PEDOT:PSS films with lowest molecular weight PEO additives show enhanced conductivity with increasing reaction time. AFM result indicates that the heat-treated PEO/PEDOT:PSS hybrid films show grain-like morphology compared to ethylene glycol treated PEDOT:PSS films which shows continuous PEDOT domain. In the present work we demonstrate that the cross-linking reaction can be used to improve the wet stability of PEDOT:PSS nanofiber, showing good water resistance and excellent dimensional stability.