高性能汽车复合尼龙管可替代高价进口品

目前我国汽车液、汽管路大多采用的单层尼龙管，普遍存在爆破压力小、抗磨性能差等问题。为解决这些问题，宏广橡塑公司科研人员在多次试验的基础上，开发出高性能汽车用复合尼龙管新产品。该产品爆破压力可达14MPa，比单层尼龙管提高一倍以上。     

陶瓷抛光机磨头专用润滑脂的开发应用

根据陶瓷抛光机磨头实际工况,研制出了陶瓷抛光机磨头专用脂。该产品以Ⅰ类基础油和抽出油为基础油,以十二羟基硬脂酸、氢氧化锂、氢氧化钙等为稠化剂,同时添加了极压、抗磨、防锈等多种添加剂调合而成。产品具有较好的抗氧化性能、抗磨性能、抗流失性能。在某陶瓷厂使用后,解决了原润滑脂存在易漏失、承载能力低的问题,完全满足用户使用需要。     

触摸屏保护膜抗磨性能研究

触摸屏保护膜在使用过一段时间后其表面会有不同程度的磨损和划伤，影响使用效果。基于实际使用过程中可能造成的刮擦，使用棉布、0^#钢丝棉对不同材质的保护膜进行抗磨性试验，通过对比保护膜试验前后的外观变化、光透过率、雾度，归纳了不同材质产品的抗磨性能，结果表明：钢化膜的抗磨性能明显优于水凝膜(TPU)和普通软膜(PET)，水凝膜和普通软膜各样品之间的抗磨性能差异较大。     

二硫代磷酸硫化氧钼减摩剂的研制

本文探讨了一种新的合成方法——二氧化硫还原法,采用该法来制备二烷基二硫代磷酸硫化氧钼,较明显地提高了产品的钼含量及原料的利用率,所得产品具有很好的抗磨减摩性能.     

聚氨酯弹性体抗泥沙磨损抗气蚀水轮机叶片的应用

在多泥沙河流中的水力机械设备，受到泥沙磨损和气蚀破坏的联合作用，其损坏速度是相当惊人的。为了提高水力机械设备的耐磨损抗气蚀性能，原水电部科技司于70年代初在全国组建六个抗磨抗气蚀科研协作组进行攻关。山西省化工研究所参与山西协作组和山西省水利科学研究所共同合作，用抗磨抗气蚀和耐水性能优良的JA－2浇注型聚氨酯弹性体（简称JA－2弹性体），研制成功聚氨酯弹性体水轮机叶片，并进行现场试验，取得良好效果，达到和超过原水电部制定的抗磨抗气蚀技术要求。经有关方面技术测定，认为该弹性体是多泥沙河流水力机械设备抗磨抗…     

旋动式人工流产器尼龙旋流环的研制

介绍旋动式人工流产器的工作原理、结构及组成，探讨旋流环的制备方法。通过对旋流环的模具设计、材料选择、工艺参数优化，研制出旋动式人工流产器尼龙旋流环。经检测，该旋流环的各项技术指标均达到设计要求，经临床初步试用证明，产品符合临床要求。     

茂名乙烯推出大塑料桶中空专用料

中石化茂名乙烯生产出高密度聚乙烯大中空专用料TR-570新产品。该产品及用该产品生产的吹塑200L双L环闭口塑料桶，各项指标均达到国家标准。     

植物蜡基润滑添加剂研究现状及发展趋势

介绍了植物蜡质的相关内容，综述了植物蜡基润滑添加剂在3种不同摩擦副的摩擦学性能，归纳总结了植物蜡基润滑添加剂的抗磨减摩机理。针对目前植物蜡基润滑添加剂研究大多是在3种摩擦副抗磨减摩性能研究上的局限性，提出研究范围扩展到其他类型的摩擦副以及以四球机和环块试验机为实验的各种摩擦学性能参数上，同时对其针对润滑油基础油的抗氧化安定性、低温性等其他性能的影响及和其他润滑添加剂的配伍性、在适配其他基础油等方面的发展趋势做了预测。     

“环燕”轮胎蝉联“河南省免检产品”8年

近日 ,鹤壁环燕轮胎有限责任公司环燕牌轮胎被河南省质量技术监督局评为 2 0 0 4年免检产品 ,这是该产品连续 8年被评为省免检产品。　　该公司通过严格质量管理 ,贯彻ISO 90 0 0质量管理标准 ,产品质量稳定提高 ,在国家质监部门每年度的产品抽查中 ,环燕牌轮胎产品合格率均达到1 0 0 %,赢得了全国用户的信赖。“环燕”轮胎蝉联“河南省免检产品”8年@郭红波$鹤壁环燕轮胎有限责任公司     

苯醚甲环唑的合成研究

介绍了苯醚甲环唑的一种新的合成路线：以苯醚酮为原料，经过环化、溴化、缩合得到苯醚甲环唑。该工艺反应三步，总收率85．0％。该工艺具有生产成本低、产品收率较高等特点。     

纳米ZnO-TiO2复合粉体的制备及抗菌性能的研究

目的:制备纳米级的ZnO-TiO2复合粉体,研究纳米ZnO-TiO2与单用纳米TiO2和纳米ZnO两种抗菌剂的抗菌能力。方法:本实验以ZnCl2和TiCl4为原料制备纳米级的ZnO-TiO2复合粉体,再选择了大肠杆菌和金黄色葡萄球菌为代表菌株,采用了纸片扩散法,对纳米ZnO-TiO2复合粉体抗菌剂进行了抗菌性研究,并与单用纳米TiO2和纳米ZnO两种抗菌剂抗菌性能进行比较。结果表明:纳米ZnO-TiO2复合粉体抗菌剂对代表菌株表现出比单用纳米ZnO或TiO2抗菌剂有更好的抗菌能力。在此基础上对相关抗菌剂的抗菌机理进行了分析讨论。     

冷弯薄壁U型钢-混凝土组合梁考虑滑移效应的挠度计算

以薄壁U型钢-混凝土组合梁为研究对象,推导了组合梁的滑移微分方程并在此基础上建立了组合梁在跨中两点对称荷载作用下的挠度计算公式。分别采用文中的挠度计算公式和现行规范中的方法计算了6根薄壁U型钢-混凝土组合梁在此荷载作用下的跨中挠度值,并与相关文献的试验值进行了对比分析。结果表明：按文中的挠度计算方法与按现行规范中的方法计算的跨中挠度值误差不到1%,并且按这两种方法计算的组合梁跨中挠度值与试验值的平均误差较小,这说明现行规范中的挠度计算公式不仅可以用来计算传统工字型钢-混凝土组合梁的挠度,而且和文中提出的挠度计算公式一样也可以用来计算薄壁U型钢-混凝土组合梁的挠度。     

共混纺丝组件用圆盘型静态混合器及模拟实验

从共混纺丝组件内部结构设计出发,根据静态混合器的混合原理,将组件内分配板设计成圆盘型静态混合器,每个分配圆盘中都设计出若干大小相等、径向均匀分布的菱形栅。通过复合纺丝模拟器的冷态模拟实验,分析模拟熔体在分配板流道内的流动混合状态。熔体经过菱形栅之间径向沟槽多次分割和汇集后,获得位置交换,完成多次的混合操作。结果表明,用于纺丝组件的圆盘型静态混合器能满足共混纺丝要求;将静态混合分配圆盘组配置在已有的纺丝组件内,其结构设计可行,混合效果显著。     

Wear Properties of Alumina/Aluminum Composites with Interpenetrating Networks

The tribological behavior of an A1₂O₃/AI composite against a steel and an alumina was investigated in pin-on-disk wear tests using unlubricated conditions in air. Various composite compositions of aluminum contents ranging from 0 to 28 vol% were investigated over a variety of contact loads and sliding speeds. Wear rate and friction force were continuously monitored during testing. Following completion of the test, pin weight loss and the profile of the wear tracks were determined. Scanning electron microscopy accompanied by EDAX analysis was used to investigate the worn surfaces and the wear debris. The wear behavior of the composites with a low metal content (<15%) during sliding against steel and alumina was found to be comparable to the wear of pure alumina. Wear occurred either on the steel or apparently simultaneously on the pin and alumina disk. With higher Al contents, wear shifts to the composite, the wear rate increases abruptly and is accompanied by fracture of the A1₂O₃ matrix. Wear appears to occur in the composite when the mechanical strain in the composite, near the contact surface, as a result of frictional loads, exceeds the fracture strain of the alumina matrix.     

Reduction of soil resistance through the use of a composite coating

Generally, soil seriously resists the motionn of soil-engaging components of terrain machines and tillage equipment because soil has such strong adhesion. In order to develop a method to treat this problem, a polysiloxane/T8 composite coating was used in this study. The wettability of steel 45, steel T8, polysiloxane coating, and polysiloxane/T8 composite coating was measured using a contact angle testing instrument (JCC-1, made in China) at 20°C in air. The abrasive wear resistance of both steel 45 and polysiloxane/T8 composite coating was tested on a turnplate abrasive wear testing machine. The resistance of soil to bulldozing plates made of the aforementioned materials was measured on bulldozing resistance testing equipment. The experimental results showed that the polysiloxane/T8 composite coating had excellent hydrophobicity, and that the contact angle of water on its surface reached up to 92°, which is much larger than that of steel 45 and steel T8. The relative volume wear loss of the polysiloxane/T8 composite coating was 65% and its bulldozing resistance was reduced by 15.2%–22.3% compared to bare steel 45.     

Lubricated Rolling and Sliding Wear of a SiC-Whisker-Reinforced Si3N4 Composite against M2 Tool Steel

Mineral oil lubricated rolling and sliding wear of SiC whisker (SiC_w) reinforced Si₃N₄ composite and monolithic Si₃N₄ prepared identically against M2 tool steel were investigated using a cylinder-on-cylinder apparatus. Wear of this Si₃N₄ was higher than that of the composite. Wear of the steel against Si₃N₄ was also higher than that against the composite. Relatively larger scale microfracture occurred in the Si₃N₄ than in the composite; more pullout and microchipping of carbide particles were observed in the steel against Si₃N₄ than against the composite. Polishing of the worn surfaces of the steel occurred in both sliding and rolling tests. This was attributed to fine, hard wear debris circulating in the contact area. Spalling was observed in the steel sliding against Si₃N₄ but not in the steel sliding against the composite.     

一种实用的钢塑复合技术

介绍气－固流化床内直接进行钢塑复合的原理，工艺和装置。实验证明了这种方法的可行性，并初步讨论了复合过程中可能出现的问题和这种技术的有关应用。     

Sliding wear of Cr–Al2O3–ZrO2 and Mo–Al2O3–ZrO2 composites

The sliding wear behavior of a number of reactively sintered metal–alumina-composites (s-MAC) containing zirconia and pure alumina and yttria-stabilized zirconia (3Y-TZP) reference materials were investigated using a ball-on-disk method. Samples were tested against stainless steel (s/steel) and 3Y-TZP ball-sliders. Two series of tests were performed, firstly the samples were tested at low loads against both ball materials and in the second series, the Cr containing composites were tested against the s/steel sliders using increased loads. At low loads, tests against s/steel balls showed no significant differences between samples containing Cr when compared to samples containing Mo. Cr-bearing composites tested against 3Y-TZP showed lowest specific wear rate for this combination of couples. At the low loads no clear correlation was found between hardness and specific wear rate. One Cr containing material showed significantly lower wear than 3Y-TZP, even though it had a slightly lower hardness. Specific wear rates for 3Y-TZP slider balls were significantly higher than for s/steel balls, regardless of the disk material. At high loads, s/steel ball-metal transfer to the specimen disk becomes the dominant “wear” mechanism. This phenomenon occurred to such an extent that the specific wear determined for the sample disks was negative.     

Simultaneous enhancement of friction and wear resistance for high-speed braking system with Cr3C2-NiCr-coated brake disk

The current steel brake disk and Cu-based powder metallurgy brake pad used in high-speed trains suffer fading coefficient of friction (COF) and excessive wear, resulting in a shorten lifetime and numerous exhausted brake disks. High-velocity oxygen fuel (HVOF) spray-prepared coatings have proven their ability to improve COF and decrease wear rate. In this article, Cr₃C₂-NiCr coating was sprayed on a steel brake disk, and a series of emergency braking tests under dry and wet conditions were performed on a subscale brake dynamometer, to comprehensively evaluate the braking performance of coated brake disk. The results showed that the coated brake disk exhibits a higher COF at 380 km/h, which effectively inhibits the COF fade compared to the steel brake disk case. The coated brake system also achieves a lower wear rate of the brake pad at 380 km/h, showing the desired high COF and low wear rate properties of the braking system. Additionally, the coated brake disk maintained surface integrity even after severe braking tests, highlighting its potential in the braking system. Based on the characterizations of wear debris and brake pads, a harder and thinner oxide friction film plays a crucial role in achieving the excellent braking performance in coated brake disk cases.     

Sliding Wear of Al2O3–SiC–(Al,Si) Composites against a Steel Counterface

The sliding-wear behavior of Al₂O₃–SiC–Al composites prepared by melt oxidation against a steel counterface has been recorded in a pin-on-disk machine. At high speeds and pressures (10 m/s, 20 MPa), friction and wear appear to be principally controlled by the in-situ formation of an interfacial film that consists of a layer of Fe₃O₄. The formation of this film is examined as a function of sliding speed, lubrication, and composite microstructure. A model is proposed in which high surface temperatures cause the preferential extrusion of aluminum from the composite onto the pin/disk interface. This promotes the adhesive pickup of iron and its oxidation to form a stable tribologically beneficial layer of Fe₃O₄.