1) PU/SiO_2
PU/SiO2
1.
The influences of the amount of water,catalyst HCl , temperature on the sol-gel process, coupling agent on the morphology and properties of the PU/SiO_2 hybrid materials were discussed.
结果表明:通过溶胶-凝胶法制备的PU/SiO2杂化材料中PU和SiO2形成了较强的化学作用,而不是简单的共混,同时随着SiO2含量的增加材料的脆性逐渐增大,但加入偶联剂后,材料的韧性又有所提高。
2) plutonium(Ⅳ)
Pu()
3) silica
[英]['sɪlɪkə] [美]['sɪlɪkə]
SiO2
1.
The factors influencing the modifying efficiency,such as amount of modifier,modifying time,rotating speed of the mill and ratio of ball and silica,were discussed.
以含氢硅油为改性剂,用机械化学法对SiO2粉体进行表面改性,通过测定接触角和TGI、R、TEM等手段表征改性效果,讨论了改性剂用量、改性时间、磨机转速、球料比等因素对改性效果的影响。
2.
Core/shell composite microparticles with silica nanoparticle as core and crosslinked poly(tert-butylmethacrylate) as shell were prepared by seed-emulsion polymerization utilizing 3-(trimethoxysilyl)propyl methacrylate(MPS) modified silica particles as seeds,tert-butylmethacrylate as monomer and sodium dodecyl sulfate(SDS) as emulsifier.
以甲基丙烯酸-3-(三甲氧基硅基)丙酯(MPS)修饰的SiO2胶体粒子为种子,甲基丙烯酸叔丁酯(tBMA)为单体、十二烷基硫酸钠(SDS)为乳化剂,采用种子乳液聚合法制备了SiO2/聚甲基丙烯酸叔丁酯的核壳复合微粒。
3.
By using of the alkalinity catalyst of ammonia and controlling the water content, the ethyl-orthosilicate occured hydrolytic reaction to form nano-silica dispersed in ethanol, then washed, dried and silica nanoparticles were prepared.
将正硅酸乙酯和乙醇的混合溶液加入到乙醇、水和氨水的混合溶液中,水解制备出单分散SiO2的乙醇分散液,然后分离出SiO2纳米粒子。
4) silicon dioxide
SiO2
1.
The effects of non-aqueous ball milling on the structure and properties of modified silicon dioxide particles were investigated using X-ray powder diffraction, particle size analysis and zeta potential analysis, etc.
以市售SiO2粉体为主要研究对象,采用X射线衍射线形分析、激光粒度分析和Zeta电位分析等表征手段,研究了球磨作用对改性SiO2晶体结构、粒度和Zeta电位的影响。
2.
The application of nano-particles,such as zinc oxide and silicon dioxide,in the ultraviolet radiation shield coatings is summarizes in this paper.
本文对纳米ZnO和SiO2 在紫外屏蔽涂料中的应用进行了综述。
3.
Purpose To study the expression and translocation of nuclear transcription factor Sp1 in type Ⅱ pneumocytes (A549) after stimulated by silicon dioxide in vivo and in vitro and to discuss the role which nuclear transcription factor Sp1 played in the development of silicosis.
目的研究二氧化硅(SiO2)刺激的Ⅱ型肺泡细胞(A549)中核转录因子Sp1表达和定位的动态变化,探讨其在矽肺发生发展中的作用。
5) SiO_2
SiO2
1.
PECVD SiO_2 Layers on AlGaN/GaN Mental Oxide Semiconductor Heterostructure Field-Effect Transistor;
采用PECVD方法制作SiO2绝缘层的AlGaN/GaNMOS-HFET器件
2.
The nanocomposite particles of NiFe_2O_4-SiO_2 are synthesized.
合成了NiFe2O4-SiO2纳米复合微粒,借助傅立叶变换红外光谱仪(FT-IR)、X射线衍射仪(XRD)、透射电子显微镜(TEM)等分析手段对样品的成分、结构及形貌进行了表征,利用振动样品磁场计(VSM)测定了磁核及其复合微粒的磁学性能,并在pH=6的条件下测定了样品对溴代十六烷基吡啶的饱和吸附量。
3.
In view of little protection against UV radiation for which cotton fabrics can provide,prepared nano-TiO_2 and nano-SiO_2 by micro-emulsion method so that the resultant nanometer powder had good dispersing property and very fine particles.
针对棉织物抗紫外线性能较差的缺点,运用微乳液法制备了纳米TiO2与纳米SiO2材料,使所制备的纳米颗粒分散性好,纳米粉体颗粒细。
6) SiO 2
SiO2
1.
Nanometer SiO 2 film is coated on the activated micrometer Al powder.
摘 要 利用在活化微米金属铝粉表面包覆纳米SiO2 致密膜的方法, 以对推进剂燃烧具有催化作用的纳米膜取代了铝粉表面本身的惰性氧化层。
2.
The change of SiO 2 content with aging time is mensurated by X-ray fluorescence(XRF).
用XRD、FT IR分析手段对其进行了表面结构表征 ,采用X衍射荧光光谱仪 (XRF)测定SiO2 包覆量随陈化时间的变化。
3.
Silica sols were prepared by hydrolysis of Si(OC 2H 5) 4 (TEOS) using HCl, NH 3·H 2O, HCl/NH 3·H 2O as catalyzers, and the different granularities of SiO 2 sols which catalyzed by HCl first and then NH 3·H 2O have the same terminal pH value were prepared.
采用HCl催化、NH3 ·H2 O催化、HCl与NH3 ·H2 O分步催化三种途径制备了SiO2 胶体 ,用透射电镜观察了胶体粒子的形貌 。
补充资料：reduction of Pu(IV)to Pu(III)
分子式：
CAS号：
性质：by U(IV)铀(IV)是一种钚(IV)的很好的还原剂，已广泛应用于后处理工业，特别是共去污循环。其反应式为 反应速率比亚铁还原钚(IV)稍慢，但反应完全。当铀(IV)用作还原剂时，需要加入支持还原剂破坏亚硝酸，以防止U4+被亚硝酸氧化。常用的支持还原剂是肼。为了保证钚还原完全，加入的铀(IV)量应使铀(IV)/钚(III)比值在3～8之间，还原剂中硝酸浓度为0.5～2mol/L，硝酸肼浓度为0.1～0.2mol/L。
CAS号：
性质：by U(IV)铀(IV)是一种钚(IV)的很好的还原剂，已广泛应用于后处理工业，特别是共去污循环。其反应式为 反应速率比亚铁还原钚(IV)稍慢，但反应完全。当铀(IV)用作还原剂时，需要加入支持还原剂破坏亚硝酸，以防止U4+被亚硝酸氧化。常用的支持还原剂是肼。为了保证钚还原完全，加入的铀(IV)量应使铀(IV)/钚(III)比值在3～8之间，还原剂中硝酸浓度为0.5～2mol/L，硝酸肼浓度为0.1～0.2mol/L。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条