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胶粘剂具有优良的粘合性能,能够将各种材料紧密的粘结在一起。随着现代经济的发展以及科学技术的进步,胶粘剂被广泛应用于各个领域中。目前,随着各种新产品的出现,对胶粘剂的粘合性能以及粘合技术提出了越来越高的要求,而受到各种因素的限制,胶粘剂行业的水平还很难适应这种需求,因此,需要通过技术的创新来满足这种需求。本文主要介绍了胶粘剂的分类及其在各个领域中的应用,并对未来胶粘剂的发展趋势进行了简单的分析。 相似文献
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本文概述了微乳液的组成、结构及制备方法,综述了微乳液制备纳米粒子的影响因素,对微乳液法制备纳米材料的应用进展进行了讨论,对微乳液在纳米粒子制备中的应用前景作了展望. 相似文献
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通过几年来对"胶粘剂生产技术与应用"课程的教学改革实践,除了让学生掌握一些胶粘剂的合成原理及制备方法外,还设置了一些相关实验课程,培养了学生的动手能力和分析能力,使学生掌握了对胶粘剂的一些性能检测,提高了该课程的教学质量和学生的实验技能. 相似文献
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本文主要论述科研新品触变型改性双组份环氧胶粘剂XX609X在我公司产品的使用工艺研究,重点分析在某产品中金属层与橡胶层之间该胶粘剂在使用工艺参数下的粘接强度及研究材料强度检测试验方法。通过检测该环氧胶粘剂及橡胶层材料的材料设计指标及实测值从而验证其使用性能;通过对该产品要求的金属材料、聚氨酯橡胶及环氧胶粘剂之间,采用不同的底材处理方法下的粘接强度比对试验及不同试验方法下的材料性能比对,最终确定该胶粘剂在该产品生产研制过程中的粘接使用工艺和材料剪切强度试验方法。 相似文献
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绞刀是绞吸式挖泥船的砂浆搅混装置,其性能及使用寿命直接影响挖泥船的生产效率和效益。通过比较不同结构绞刀的性能,阐述了型内冶金复合低合金抗磨钢—高铬铸铁铸造绞刀的合金成分、制造工艺、性能特点及经济效益。介绍了实际应用效果。 相似文献
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以马铃薯淀粉为原料,通过单因素实验方法研究湿法工艺、喷雾工艺制备酶解马铃薯辛烯基琥珀酸淀粉酯,并对性能进行研究。确定制备参数:淀粉乳浓度40%、p H值8.9、温度35℃、时间4h、酸酐3%。酶添加量为0.2(U/ml),在此条件下,乳液乳化能力达到保油4.5倍,乳液稳定性48h,0.1,干粉溶解不托尾,溶解时间30min以内,干粉流动性测定值2.5。 相似文献
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本文介绍了我国现有转向架的特点,分析了转8A型转向架的组成,性能以及它的损伤及其原因,在它的优处提取精华,在它不足之处提出其改进方法,为转8A型转向架,进一步的改进提供了依据和论证。 相似文献
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In this paper, laser beam resonant interaction with pendant microdroplets that are seeded with a laser dye (Rhodamine 6G (Rh6G)) water solution or oily Vitamin A emulsion with Rhodamine 6G solution in water is investigated through fluorescence spectra analysis. The excitation is made with the second harmonic generated beam emitted by a pulsed Nd:YAG laser system at 532 nm. The pendant microdroplets containing emulsion exhibit an enhanced fluorescence signal. This effect can be explained as being due to the scattering of light by the sub-micrometric drops of oily Vitamin A in emulsion and by the spherical geometry of the pendant droplet. The droplet acts as an optical resonator amplifying the fluorescence signal with the possibility of producing lasing effect. Here, we also investigate how Rhodamine 6G concentration, pumping laser beam energies and number of pumping laser pulses influence the fluorescence behavior. The results can be useful in optical imaging, since they can lead to the use of smaller quantities of fluorescent dyes to obtain results with the same quality. 相似文献
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秦玉明 《中国科学院研究生院学报》1992,(1)
本文介绍弹性散射和电磁离解事例判选原则,利用14.6A GeV ~(16)O 与核乳胶相互作用平均自由程的实验值,给出计算反应截面的方法,得到 ~(16)O与核乳胶的H 靶弹性散射截面以及核乳胶对 ~(16)O 电磁离解截面. 相似文献
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我国乳化炸药经过30多年的发展在生产工艺和安全技术等方面都得到了长足的进步,但乳化炸药生产过程中仍然存在诸多危险因素。因此,必须在正确辨识乳化炸药生产过程中的危险源的基础上提出正确可行的事故预防和应急处置对策,才能够有效地避免事故的发生。 相似文献
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An emulsion system was simulated under simple shear rates to analyze its rheological
characteristics using a hierarchical multi-scale approach. The molecular dynamics (MD) simulation
was used to describe the interface of droplets in an emulsion. The equations derived from the MD
simulation relative to interfacial tension, temperature, and surfactant concentration were applied
as input parameters within lattice Boltzmann method (LBM) calculations. In the LBM simulation, we
calculated the relative viscosity of an emulsion under a simple shear rate along with changes in
temperature, shear rate, and surfactant concentration. The equations from the MD simulation showed
that the interfacial tension of the droplets tended to decrease with an increase in temperature and
surfactant concentration. The relative viscosity from the LBM simulation decreased with an increase
in temperature. The shear thinning phenomena explaining the inverse proportion between shear rate
and viscosity were observed. An increase in the surfactant concentration caused an increase in the
relative viscosity for a decane-in-water emulsion, because the increased deformation caused by the
decreased interfacial tension significantly influenced the wall shear stress. 相似文献
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刘福虎 《中国科学院研究生院学报》1992,(1)
本文研究低能碳离子的径迹宽度对电荷和速度的依赖关系,并给出了低能碳离子在 NIKFI-BR2型核乳胶中的电离损失——动能和射程——动能曲线,为靶核重碎片能谱的测定提供了依据. 相似文献
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(1) A method of preparing photohalide emulsions somewhat different from that of Lüppo-Cramer has been worked out, using either colloidal silver or colloidal silver sulphide as the sensitizer.(2) Treatment of the plates containing this emulsion with chromic acid to remove excess colloidal silver also lowers sensitivity considerably. This sensitivity can be restored by an after-treatment of the plates with a very dilute ammonia solution.(3) The photohalide emulsion prepared as described showed, with one exception, a broader spectral sensitivity than those prepared without colloidal silver or silver sulphide. This agrees with the previous work of others on photohalide emulsions.(4) The spectral sensitivity of such emulsions differs from those sensitized with allyl-thiourea sensitizer in being more sensitive in the red and less sensitive in the green region of the spectrum.(5) The present work supports the strain-ionic deformation hypothesis of sensitivity proposed by Sheppard, Trivelli and Loveland. It does not, however, exclude the hypothesis of Hickman as to the role played by the silver sulphide sensitizing speck. 相似文献
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