气相二氧化硅的制备方法及其特性

简述了气相二氧化硅的发展情况和制备方法，介绍了气相二氧化硅的特性、标准及其相关表征方法。     

表面改性的气相二氧化硅及其应用

简述了气相二氧化硅表面改性方法及原理，同时介绍了表面改性的气相二氯化硅的表征方法及其应用。     

含气相二氧化硅排水的处理方法——古贺义明．JP 200783226

本发明提供了不影响环境,简便处理废弃气相二氧化硅的方法。     

气相二氧化硅的性质、发展现状及其应用

介绍了气相二氧化硅的制备及其性质与用途，并对其表面改性工艺作了阐述。简述了国内外气相二氧化硅的生产研发现状，对我国未来气相二氧化硅的发展前景作了预测。     

气相二氧化硅的表面改性

简要介绍了气相二氧化硅的表面改性、改性原理、改性工艺、常用改性剂以及改性气相二氧化硅的应用。概述了我国气相二氧化硅工业的发展现状。     

疏水型气相二氧化硅技术获专利

广州吉必盛科技实业有限公司开发的连续表面处理制备疏水型纳米级二氧化硅的方法已获国家发明专利授权,标志着我国在气相法二氧化硅的连续表面处理改性方面取得了自主知识产权。该专利技术实施有望打破国外公司对我国疏水型气相二氧化硅市场的垄断局面。目前吉必盛公司有能力生产与国外公司对应的所有牌号疏水型气相二氧化硅产品。计划在其子公司连云港吉必盛新材料有限公司筹建气相二氧化硅在线表面处理生产线,最终形成5000t/a疏水型气相二氧化硅生产线。     

利用气相二氧化硅从人血浆中制备载脂蛋白A1方法的建立

目的建立利用气相二氧化硅从人血浆中制备载脂蛋白A1(apolipoprotein A1,apo A1)的方法,并对该方法的效果进行评价。方法在人血浆中加入气相二氧化硅吸附apo A1,考察气相二氧化硅加入人血浆比例(m/V)及孵育时间对吸附的影响,确定最佳吸附条件。吸附后,离心分离人血浆与气相二氧化硅,再用不同浓度的乙醇溶液洗脱气相二氧化硅吸附的apo A1,确定乙醇溶液的最佳洗脱浓度。洗脱产物采用BCA法测定总蛋白浓度后,经SDS-PAGE,采用凝胶成像分析软件Bandscan 5.0分析apo A1纯度,并评价该方法制备apo A1的效率。结果人血浆中加入1%(m/V)的气相二氧化硅时,apoA1提取效果最佳。气相二氧化硅与人血浆混合物孵育10 min,可完成对apoA1的饱和吸附。该混合物固液分离在大于12 000×g的离心力条件下离心10 min,可获得最佳效果。洗脱液中乙醇最佳浓度为20%(V/V)。在该洗脱条件下,可从1 mL人血浆中制备纯度为78.7%的apoA1 0.92 mg。结论建立了利用气相二氧化硅从人血浆中制备apoA1的方法,该方法可简便高效地从人血浆中制备apoA1。     

气相二氧化硅对HTV性能的影响

研究了气相二氧化硅的表面改性技术,通过红外光谱、比表面积、碳含量、甲醇值等测定表征了气相二氧化硅的性质。同时研究了气相二氧化硅的比表面积、表面处理剂等因素对热硫化硅橡胶（HTV）性能的影响。     

亲水型气相二氧化硅对环氧固化剂流变性能的改性研究

采用亲水型气相二氧化硅对环氧固化剂的流变性能进行了改性,研究了不同含水率亲水型气相二氧化硅在不同类型环氧固化剂中的改性效果,以及改性效果的储存稳定性,其结果表明亲水型气相二氧化硅对不同类型的环氧固化剂的流变性能改性效果不同,最优的是改性酚醛胺固化剂,其次是改性脂环胺固化剂,对聚醚胺固化剂改性效果差.亲水型气相二氧化硅对...     

气相二氧化硅胶体电解质的研究进展

文章介绍了阀控密封胶体蓄电池用气相二氧化硅电解质的研究进展。分别从气相二氧化硅的性质,胶体电解质的配制工艺,气相二氧化硅的粒径,胶体电解质的含量及添加剂等几个方面进行了综述。最后指出了胶体蓄电池的存在的主要问题及其发展前景。     

Preparation of nanosilica reinforced waterborne silylated polyether adhesive with high shear strength

Waterborne adhesives are extremely environment‐friendly but unfortunately deficient in mechanical properties. In this article, nanosilica, stemming from tetraethyl orthosilicate (TEOS), silica sol, and/or fumed silica powder, was employed to reinforce the waterborne silylated polyether adhesives. Effects of TEOS content, silica sol content, and the type and content of fumed silica on the shear strength of the adhesive were investigated using a scanning electronic microscope and an electronic instron tester and the strengthening mechanisms of different silica source were discussed. All the shear strengths of silylated polyether adhesives first increased and then decreased as TEOS content, silica sol content or fumed silica content increased. Colloidal silica particles was less efficient than fumed silica particles for reinforcing the polyether adhesive but can increase the shear strength of hydrophobic fumed silica embedded adhesive. Comparing the adhesives with the hydrophilic fumed silica (HS‐5) or the extremely hydrophobic fumed silica (TS‐720), the adhesive with moderate hydrophobic fumed silica (TS‐610) had the highest shear strength. The maximal shear strength of 2.5 MPa was achieved when TEOS, silica sol, and fumed silica were combined. It seemed that TEOS, silica sol, and fumed silica played crosslinking (with polyether chain), dispersing (for fumed silica), and reinforcing roles on waterborne adhesive, respectively. This reinforcing mechanism opened a new way to fabricate waterborne adhesives (or coatings) with high performances. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008     

气相法白炭黑的应用技术

介绍了气相法白炭黑的制备方法、特性以及在橡胶、塑料、涂料、胶粘剂、电子方面的应用及其相关作用机理。简述了气相法白炭黑的国内市场情况和发展方向。     

气相法二氧化硅应用机理及特性

主要介绍了气相法二氧化硅在液态体系、干燥体系、固态体系中的作用机理；气相法二氧化硅在应用中的特殊性能；以及比表面积、pH、含水量、添加量、表面处理程度等气相法二氧化硅各项物理性能对应用性能的影响。     

A Thermoporometry Study of Fumed Silica/aerogel Composites

The porous texture of fumed silica/aerogel composite materials is studied by thermoporometry. The effect of fumed silica (Aerosil) powder in aerogels, added during the sol-gel processing is investigated. The textural change due to the autoclave drying process as a function of the fumed silica/aerogel ratio of the systems is investigated. The meso- and macro porosity of the fumed silica/aerogel composites is mainly influenced by the ratio fumed silica/aerogel and only slightly by the autoclave drying process. Addition of fumed silica powder results in an increase of the mean pore radius of the system and in a decrease of the meso- and macro-pore volume. By contrast, the micro-porosity is hardly affected by the addition of the fumed silica powder; it is only influenced by the autoclave drying process.     

气相白炭黑对氟橡胶／硅橡胶共混胶性能的影响

采用气相白炭黑补强氟橡胶／硅橡胶共混胶。研究了气相白炭黑的用量和比表面积对氟橡胶／硅橡胶共混胶的力学性能、耐热老化性能和耐油性能的影响,并采用SEM观察了共混硫化胶的拉伸断面形貌。研究表明,随着气相白炭黑的用量从0份增加到50份,气相白炭黑的比表面积从120m^2·g^-1增大到380m^2·g^-1,共混胶的力学性能和耐油性能提高,而耐热老化性能下降;当气相白炭黑用量为40份,且比表面积为220m^2·g^-1时,共混硫化胶具有较好的综合性能。SEM照片表明,随着气相白炭黑用量增大,其在氟橡胶／硅橡胶共混胶中的分散均匀性下降;当气相白炭黑比表面积为220m^2·g^-1时,气相白炭黑的分散性较好。     

Effect of using sepiolite silicate + fumed silica mixtures as fillers on the characteristics of solvent-based polyurethane adhesives

Abstract —Both fumed silica and sepiolite have been used as a filler of polyurethane (PU) adhesives. Although effective, the small particle size and the relative high cost of fumed silica are limitations in some applications. Sepiolite is cheaper than fumed silica, but its relatively large particle size facilitates its settling from the adhesive solutions. In this study, the usefulness of using sepiolite + fumed silica mixtures as a filler in solvent-based PU adhesives is demonstrated. The rheological and adhesion properties of the PU adhesive solutions and the rheological and mechanical properties of the PU films (without solvent) were studied. SEM micrographs of PU films showed the morphology and compatibility of the fillers with the PU matrix. The use of sepiolite + fumed silica mixtures inhibited the settlement of the filler from the PU adhesive solutions, increased both the storage and the loss moduli, and improved the rheological and mechanical properties of the PU. On the other hand, the green (immediate) T-peel strengths of roughened styrene-butadiene rubber/PU adhesive joints and plasticized PVC/PU adhesive joints were greatly improved in filled PU adhesives. The effects produced by using fumed silica alone or sepiolite + fumed silica mixtures were very similar, although in general, somewhat more marked in fumed silica-filled PU.     

Optical and Mechanical Properties of Nanocomposite Films Based on Polymethyl Methacrylate (PMMA) and Fumed Silica Nanoparticles

Nanocomposite polymer films are prepared by using ultrasonic spray deposition (USD) technique through mixing polymethyl methacrylate as matrix and fumed silica nanoparticles as second phase in dimethyl carbonate solvent. Annealing procedure improves the film uniformity and optical transmission. The addition of fumed silica nanoparticles impedes the transmission of the electrolyte films due to agglomeration of fumed silica nanoparticles. Fortunately, adding surfactant, cetyltrimethylammonium bromide, disperses the fumed silica nanoparticles and retrieves the optical transmission of nanocomposite polymer films to around 90%. The hardness and elastic modulus of the nanocomposite polymer films are better than the commercial bulk. The USD deposited nanocomposite polymer film comprises of PMMA and fumed silica nanoparticles is a promising candidate of solid-state electrolyte for EC windows application. POLYM. ENG. SCI., 60:553–557, 2020. © 2019 Society of Plastics Engineers     

国内气相法白炭黑工业的发展现状与展望

概述了气相法白炭黑工业的发展状况、国内气相法白炭黑行业的市场状况及生产工艺发展状况,就国内气相法白炭黑工业存在的问题进行了分析,并提出了相关建议。     

白炭黑消光剂在溶剂型涂料中的应用

阐述了白炭黑消光剂在溶剂型涂料中的应用,分析了影响消光效果的因素以及预防措施,探讨了白炭黑消光剂在溶剂型木器涂料中的匹配。     

Impact of nanoclay on physicomechanical and thermal analysis of polyvinyl alcohol/fumed silica/clay nanocomposites

Polyvinyl alcohol (PVA)/fumed silica/clay nanocomposites are prepared via solution intercalation by exploiting phase separation based on the bridging of particles by polymer chains. PVA/fumed silica/clay nanocomposites are characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy, and thermogravimetric analysis. Mechanical properties are determined by universal testing machine. From FTIR results, it indicates that IR spectrum for PVA/fumed silica/clay nanocomposites, especially PVA/fumed silica/clay (1.30E) nanocomposites, is much broader than pure PVA and other clay nanocomposites. The better interfacial bonding between PVA/fumed silica/clay (1.30E) nanocomposites are reflected in the improvement of the mechanical properties as well as thermal stability. The surface area analysis result proves that the PVA/fumed silica/clay (1.30E) nanocomposites have higher surface area and pore volume with less pore size. With the addition of 1.30E clay to the composite system, the tensile strength and modulus had shown the highest values as well as higher activation energy for thermal decomposition. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 41843.