胶粉在阻尼板材中的应用

根据胶粉的混炼特性和硫化特性，通过实验探讨了它在阻尼板材中的应用，研究了胶粉用量对产品性能的影响。结果表明，胶粉完全可以替代橡胶和树脂用于阻尼板材的生产，并可大幅度降低生产成本。     

多元胶凝粉体复合效应的研究

在水泥中掺人具有不同颗粒分布和活性的细掺合料可以获得多元胶凝粉体材料。采用标准稠度用水量法和环境扫描电镜研究了多元粉体体系的紧密堆积效应。提出用标准稠度需水量比作为确定紧密堆积效应的实验方法。用水化热和抗压强度实验研究了多元胶凝粉体材料各组分的水化进程匹配和复合胶凝效应,测定了多元胶凝粉体大体积混凝土的强度和绝热温升过程。实验结果表明：改变胶凝组分的品种、含量和细度可以调控多元胶凝粉体的绝热温升和强度发展过程。以满足配置高性能混凝土的特殊技术需求。     

不球磨无机粉体发光材料制备技术进展

综述了不球磨无机粉体发光材料制备技术进展,着重总结了稀土掺杂型无机粉体发光材料的制备方法。介绍了溶胶-凝胶法,燃烧合成法,微波合成法,共沉淀法,喷雾热解法,水热合成法,气相反应合成法和微乳液法等制备方法。对比总结了每种合成方法的优缺点,并对其未来发展趋势作了展望。综述国内外研究报告和论文82篇。     

纳米无铅PTC陶瓷粉体的低温合成

本实验重点研究了纳米无铅PTC陶瓷粉体的低温合成。主要包括柠檬酸盐sol-gel法制备BaTiO3基干凝胶、干凝胶的600℃煅烧和施主杂质以及助烧剂的添加等过程。利用TG-DTA、XRD、FAM、SEM、TEM对制备过程、相组成、颗粒粒径分布和颗粒形貌进行了分析。同时,对pH值和水含量对干凝胶的形成影响也进行了讨论。实验结果表明:利用柠檬酸盐溶胶凝胶法可以合成颗粒粒径在30～70纳米的无铅PTC陶瓷粉体。     

Aluminum‐enhanced alkali diffusion from float glass to PVD‐sputtered silica thin films

Interdiffusion processes between aluminum enriched PVD‐sputtered silica thin films and industrial float soda‐lime silicate glass substrates are quantitatively studied using SIMS analysis. Heat treatments are performed at temperatures close or above the glass transition temperature of the float glass. Aluminum doping of the film is shown to strongly increase the migration of alkali from the glass substrate to the silica thin film. In particular the final alkali content in the film exhibits a linear scaling with the aluminum concentration. An interdiffusion process is evidenced between bulk alkali ions and protons originating from a significant water content in the as‐deposited silica film. Experimental measurements of sodium concentration are shown to be consistent with a simple thermodynamic model based on the equilibration of the activity of sodium between the film and the glass substrate.     

再生橡胶制备中氧化程度控制对再生橡胶性能的影响

通过添加过氧化氢或过碳酸钠考察废胶粉再生过程中氧化程度对再生橡胶性能的影响。结果表明:废胶粉再生配方中添加过氧化氢或过碳酸钠后,再生橡胶的溶胶质量分数增大,门尼粘度下降,强伸性能有所改善;综合考虑再生橡胶的加工性能和强伸性能,过氧化氢用量以0.7份为宜,过碳酸钠用量以1.8份为宜,过碳酸钠的再生效果更好。     

Characterization of electrodeposited powders of the system Ni-Mo-O

The electrodeposition of the Ni-Mo-O alloy powders from ammonium chloride containing electrolytes for different Ni/Mo ions concentration ratios was investigated by the polarization measurements. The morphology, chemical composition and phase composition of the electrodeposited Ni-Mo-O alloy powders were investigated using DSC, TGA, SEM, EDS and XRD analysis. According to the EDS results, the powder composition depends on the Ni/Mo ions concentration ratio. However, some deviations in the composition of the as-deposited powders, as the result of the position of the EDS analysis, revealed that the composition of such powders is not homogeneous. The as-deposited alloy powders were nanocrystalline showing only one broad XRD peak around 44°. Their morphology was found to depend on the Ni/Mo ions concentration ratio. After annealing of the Ni-Mo-O powders for 2 h in N₂ atmosphere at 600 °C, well-defined crystals for all powders were detected by SEM. The presence of the NiMoO₄ phase only or NiMoO₄ and MoO₃ phases in these powders (XRD), depending on the Ni/Mo ions concentration ratio, was identified. The additional EDS analysis on different recrystallized grains revealed the influence of the annealing on a composition of the alloy powders.     

丁腈橡胶、腰果油改性酚醛树脂的研究

以丁腈橡胶粉和腰果油改性酚醛树脂为改性剂，通过对多种原料、橡胶助剂、摩擦性能调节剂的研究和配方筛选，制得高性能载重汽车刹车片内衬材料。该材料磨耗低、抗冲击强度高、硬度和摩擦系数适中、高温抗热衰退明显，生产过程中可省去投资大、能耗高的密炼工艺，具有重要的工业价值。     

替代镀硬铬的几种新工艺

传统镀硬铬技术存在环境污染问题及镀铬层的性能缺陷。综述了几种可以替代镀硬铬的新工艺的特点、性能及其研究现状,包括非晶态合金镀、高速火焰喷涂、镀金刚粉、离子束注入技术等。以上技术有许多优点,但也各有局限性。提出了选择合适镀硬铬替代工艺的要求。     

高细石灰石粉用作水泥混合材料的试验研究

实验室试验了在P·Ⅰ42.5R硅酸盐水泥中掺入高细石灰石粉对水泥物理性能的影响。试验结果表明,高细石灰石粉是一种优良的水泥混合材料;高细石灰石粉与矿渣粉按适当比例配合,比单独掺入矿渣粉各试验龄期强度均明显提高,特别是大幅度提高了3d强度。在P·Ⅰ42.5R硅酸盐水泥中掺入4%高细石灰石粉和26%矿渣粉,能够在保持水泥3d强度基本不变的前提下,大幅度提高水泥的28d强度。