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Epoxy resin and preparation method thereof
The invention relates to epoxy resin and a preparation method thereof. The epoxy resin has a structural formula (I) shown in the specifications. In the preparation method, the epoxy resin can beExpand
Method for preparing propionyl levocarnitine hydrochloride and application of medicaments thereof
The invention relates to a method for preparing propionyl levocarnitine hydrochloride and application of medicaments thereof. The method comprises the following steps of: (1) mixing and stirringExpand
The thermosetting resin composition and a prepreg and a printed circuit laminate which is made by
The present invention relates to a thermosetting resin composition and a prepreg which is made of printed circuit laminates, the thermosetting resin composition comprising at least one component isExpand
Epoxy resin composition as well as prepregs and laminated plate using same
The invention belongs to the technical field of copper-clad plates and relates to an epoxy resin composition as well as prepregs and a laminated plate using the same. The thermosetting resinExpand
“反全球化”运动:探析全球化未来走势的一个新视角
本文认为,随着全球化的狂飙式发展,"反全球化"浪潮也一浪高过一浪,这为全球化的未来发展增添了变数."反全球化"运动是对全球化负面效应的集中回应.虽然"反全球化"运动不能阻止全球化的进程,但会对它的发展起到制衡作用.从"反全球化"运动的角度审视,21世纪的全球化将更富有人性、理性、公正性、多样性等特征.
A circuit substrate and method of preparation
The present invention provides a method for preparing an adhesive sheet for constituting a circuit board, said method comprising the use of pre-glue having a dielectric constant (Dk) and the value ofExpand
钛酸钡添加量对埋容用环氧-钛酸钡-玻璃布板材性能的影响
采用热固化层压方法制备了环氧-钛酸钡-玻璃布(EBG)板材,并分析钛酸钡(BTO)添加量对埋容用EBG板材各项性能的影响。结果表明:随着BTO填料添加量的增大,EBG板材的实际密度先接近后偏离理论密度,孔隙率先减小后增大,耐浸焊时间、剥离强度先增大后减小,5%热分解温度和介电常数增大;当BTO的质量分数为80%左右时,埋容用EBG板材具有较好的综合性能;EBG板材为一种混联模型。
全球化的另一面——“反全球化”运动再审视
作为全球化负面效应的集中回应,近年来在新一轮的"全球化"方兴未艾之际,如影随形的是一浪高过一浪的"反全球化"运动的浪潮.虽然"反全球化"运动有其积极意义,但由于其自身存在诸多问题,其局限性也是明显的.不过,随着"反全球化"运动的深入开展,"反全球化"运动必将逐渐走向成熟,其对新一轮"全球化"的制衡作用将更大.
Direct current uninterruptible power supply
The invention belongs to the technical field of power supplies, and relates to a direct current uninterruptible power supply. The direct current uninterruptible power supply comprises an alternatingExpand
High weather-proof thermosetting resin composite and prepreg and copper-clad laminate prepared thereby
The invention relates to a high weather-proof thermosetting resin composite and prepreg and copper-clad laminate prepared thereby. The high weather-proof thermosetting resin composite comprises theExpand