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乳化剂     
相关语句
  emulsifier
    INVESTIGATION OF COLOUR REACTION BETWEEN ZINC(Ⅱ) AND PAN IN THE PRESENCE OF EMULSIFIER OP
    在OP乳化剂存在下锌(Ⅱ)与PAN显色反应的探讨
短句来源
    CONSECUTIVE DETERMINATION OF ZINC AND COPPER IN SERUM BY SPECTROPHOTOMETRIC METHOD WITH PAN AND EMULSIFIER OP
    PAN-乳化剂OP分光光度法连续测定血清中的锌和铜
短句来源
    Spectrophotometric Determination of Microamounts of Chromium in Steels with Chrome Azurol S and Emulsifier OP
    铬天青S-乳化剂OP分光光度法测定钢中微量铬
短句来源
    COLOR REACTION OF BISMUTH(Ⅲ)WITH 2-(3,5-DIBROMO-2-PYRIDYLAZO)-5-DIETHYLAMINOPHENOL IN THE PRESENCE OF EMULSIFIER OP
    铋-2-[3,5-二溴-2-吡啶偶氮]-5-二乙氨基苯酚-乳化剂OP的显色反应
短句来源
    Colour Reaction of Cobalt with o-Nitrophenylfluorone, CPB and Emulsifier OP
    钴与邻硝基苯基荧光酮、CPB、乳化剂OP的显色反应
短句来源
更多       
  emulsifying agent
    Photometric Determination of Molybdenum in Steel With Thiocyanate in the presence of Emulsifying Agent OP and EDTA
    乳化剂OP—硫氰酸盐光度法测定钢中钼
短句来源
    FLUORESCENCE QUENCHING METHOD FOR DETERMINATION OF TRACE MOLYBDENUM WITH SALICYL FLUORONE AND EMULSIFYING AGENTOP
    在乳化剂 OP 存在下水杨基荧光酮荧光淬灭法测定微量钼的研究
短句来源
    It was preferable that the emulsifying agent consistency was 0.0208mol/L.
    乳化剂十二烷基硫酸钠的浓度控制在0.0208mol. L-1左右较为合适。
短句来源
    The influences of seven non-ionic surfactants emulsifying agent OP, polyvinyl alcohols(PVA), Tween-20, Tween-80, polyvinyl pyrrolidon(PVP), TritonN-101 and Triton X-305 on The solubility increasing, absorbance and absorption spectrum of basic dye-phosphomolybdenum blue ion-associated substance are investigated.
    本文研究了七种非离子表面活性剂(乳化剂OP、聚乙烯醇(PVA)、Tween-20、Tween-80、聚乙烯吡咯烷酮(PVP)、Triton N-101、Triton X-305)对碱性染料-磷钼蓝缔合物的增溶作用、吸光度和吸收光谱的影响。
短句来源
    A study on the phase separation system of triazene copper OP emulsifying agent was carried out. In the medium of Na 2B 4O 7 NaOH buffer at pH 10.2, the complex of triazene copper could be enriched in the phase of OP emulsifying agent, when heating at 90±1℃ for 45min in a boilling water bath.
    研究了三氮烯试剂 -铜 -OP乳化剂析相富集体系在Na2 B4O7-NaOH( pH10 2 )介质中 ,于 90± 1℃加热胶束溶液 ,保持 45min ,络合物即被OP乳化剂完全富集。
短句来源
更多       
  emulsifiers
    STUDIES ON CATIONIC BITUMINOUS EMULSIFIERS 2 Synthesis of N.N-diaminopropylhexadecylamine Chloride and Study on Bis-cyanoethylation of Hexadecylamine
    阳离子沥青乳化剂的研究——Ⅱ.N.N—二氨丙基十六烷基胺盐酸盐的合成及十六胺双氰乙基化的研究
短句来源
    The optimum conditions for complex emulsifiers system are:HLB of the emulsifier in the first phase is 6.5,V(blend emulsifier)/V(Tween80)=27.5,and the mass fraction in the emulsion is 9.5%.
    复合乳化剂体系中适宜的制备条件:第一相乳化剂的HLB值为6.5,V(复合乳化剂)/V(Tween80)=27.5,乳液中乳化剂质量分数为9.5%。
短句来源
    Effect of Emulsifiers on the Stabilities of Polysiloxane Emulsion
    乳化剂对聚硅氧烷乳液稳定性的影响
短句来源
    Complex of anionic emulsifiers and long chain fatty alcohols was inves-tigeted by TEM and 1H-NMR.
    用TEM和~1H—NMR研究了阴离子乳化剂和长链脂肪醇的复合物。
短句来源
    The results show that the magnitudes of CMC of SLS/OP and SDBS/OP are lO-3g/ml. The CMC value of SLS/OP is 7~8xl0-3g/ml and is related to the purity of emulsifiers, and the CMC values are almost unchange with different ratio of SLS and OP.
    发现,SLS/OP和SDBS/OP的CMC值约为10~(-3)g/ml数量级,数据与乳化剂纯度有关,但与复合乳化剂中两者的比例无关.
短句来源
更多       
  emulsifying agents
    1. Using emulsion and soap free emulsion polymerization methods, a series of monodispersed poly(styrene-methyl methacrylate-acrylic acid) (P(St-MMA-AA)) copolymer colloids with average diameters from 200 to 500 nm was synthesized, and the effect of initiators and emulsifying agents on the size of the colloids was studied.
    1.用乳液聚合和无皂乳液聚合的方法,合成了粒径在200-500 nm单分散的聚(苯乙烯-甲基丙烯酸甲酯-丙烯酸)(P(St-MMA-AA))乳胶颗粒,研究了引发剂和乳化剂用量对所合成的乳胶颗粒粒径的影响。
短句来源
    The results showed that the amphiprotic macromonomer had not only lower critical micelle concentration (CMC) and excellent emulsifying properties but also better polymerizability than traditional emulsifying agents such as OP-10 and sodium dodecyl sulfate , and could be used as a new kind of surface-active agent.
    结果表明,与传统商品化的乳化剂OP—10和十二烷基硫酸钠相比,合成的两亲性大单体乳化剂具有临界胶束浓度(CMC)低、乳化能力优异、可聚合等优点,可用作新型的表面活性剂。
短句来源

 

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      emulsifier
    A W/O microemulsion was prepared with Span80-PS (petroleum sulfonate) as complex emulsifier, isopropanol as cosurfactant and kerosene as oil phase.
          
    Based on discussions on the nucleation mechanism of particles in the polymerization system, the influences of monomer weight added dropwise, and amounts of initiator and emulsifier on the size and distribution of PS particles were investigated.
          
    PS nanoparticles with smaller diameter such as a number-average diameter of 18.7 nm and better monodispersity were obtained since the dropped styrene amount was suitable under 20wt-% emulsifier amount and 3wt-% initiator amount based on the monomer.
          
    The shape-stabilized phase change materials (PCMs) composed of paraffin wax and silica were prepared in O/W emulsion with cetyl trimethylamine bromide as emulsifier and n-pentanol as assist emulsifier.
          
    Decontaminating solutions that are used in the laboratory practice for the detoxication of hydrophilic process ME solutions are aqueous solutions of alkali hydroxide with additions of hydrogen peroxide and an emulsifier.
          
    更多          
      emulsifying agent
    Cellulose acetate butyrate-poly(vinyl pyrrolidone) (CAB-PVP) blend microspheres were prepared using the solvent evaporation technique using poly(vinyl alcohol) as an emulsifying agent.
          
    The best reaction conditions were an acid medium, Triton X-100 as the emulsifying agent and a temperature of 30°C.
          
    The hydrocarbon-degrading strain Acinetobacter calcoaceticus RAG-1 produces an extracellular emulsifying agent capable of forming stable oil-in-water emulsions.
          
    Production of emulsifying agent during growth of Pseudomonas cepacia with 2,4,5-trichlorophenoxyacetic acid
          
    The emulsifying agent was produced in response to growth on 2,4,5-T, although some emulsification was observed in culture supernatant of glucose grown cells.
          
    更多          
      emulsifiers
    The kinetic parameters of radical copolymerization of butyl methacrylate and zinc-containing monomer were studied as influenced by the structure and concentration of various emulsifiers such as oxyalkylated alcohols and alkylphenols.
          
    Calorimetric study of polyvinyl alcohols used as emulsifiers in suspension polymerization of vinyl chloride
          
    The heat effects of dissolution of two pairs of polyvinyl alcohols used as emulsifiers in suspension polymerization of vinyl chloride and the optical transmission of their stirred aqueous solutions as a function of time were determined.
          
    It is found that many factors such as emulsifiers, initiators, reaction temperature, pH value and polymerization technology have influences on the permormance of styrene-acrylate latex.
          
    Microencapsulation of PANI with low pH as the core material was prepared by in situ polymerization of melamine-formaldehyde resins, as the shell material acts as an insulator between PANI particles, using two different emulsifiers.
          
    更多          
      emulsifying agents
    Emulsifying agents from bacteria isolated during screening for cells with hydrophobic surfaces
          
    The culture supernatants of 126 bacterial strains isolated during screening for hydrophobic cell surfaces, were tested for the production of emulsifying agents.
          
    The most effective emulsifying agents were isolated and could be divided into two chemical groups.
          
    Bordeaux mixture precipitates and related materials have been examined as emulsifying agents.
          
    In this paper the best available inorganic insecticides were chosen as emulsifying agents.
          
    更多          


    A new method, based on electrical conductivity, for the study of demulsification has been developed and applied to W/O emulsions, using oleic acid-ammonium oleate as emulsifying agent.From the variation of conductivity with time the rate of coagulation of the water droplets and the activation energy of the process have been calculated. It was concluded that the rate of coagulation is determined primarily by the coalescence of the water droplets and is kinetically of first order, the most important factor being...

    A new method, based on electrical conductivity, for the study of demulsification has been developed and applied to W/O emulsions, using oleic acid-ammonium oleate as emulsifying agent.From the variation of conductivity with time the rate of coagulation of the water droplets and the activation energy of the process have been calculated. It was concluded that the rate of coagulation is determined primarily by the coalescence of the water droplets and is kinetically of first order, the most important factor being the breakdown of the surface film. The effect of the amount of emulsifying agent on the activation energy has been pointed out and the result of Wellman and Tartar on the influence of temperature on stability has been discussed in light of this work.

    (1)本文提出水/油型乳状液型变动力学的新研究方法——电导法. (2)测定不同温度下以油酸及氨水为乳化剂时水/矿物油乳状液的电导率-时间关系,并找出二者间存在线性关系. (3)解析此体系的水滴聚结速率并计算水滴聚结活化能.证明对此体系而言,聚结速率取决于水滴凝并速率,而服从类如一级反应的动力学规则.阐明界面膜的破裂为决定过程速率的首要因素. (4)指出乳化剂浓度不同时可表现于聚结活化能的差异及由此导致的乳状液的不稳定性.从此种动力学观点,“稳定温度”及其乳化剂浓度效应得到一种可能的诠释.

    Emulsion copolymerization of chloroprene and isoprene initiated by potassium persulphate has been investigated. When chloroprene and isoprene were copolymerized to approximately 80% conversion, only a small amount of gel occurred. The peak in the viscosity-conversion curve, followed by a marked drop, is usually a sign of gel formation, since the insoluble gel does not contribute to the viscosity of the solution. The product thus obtained has a markedly decreased rate of crystallization, and the brittle-point...

    Emulsion copolymerization of chloroprene and isoprene initiated by potassium persulphate has been investigated. When chloroprene and isoprene were copolymerized to approximately 80% conversion, only a small amount of gel occurred. The peak in the viscosity-conversion curve, followed by a marked drop, is usually a sign of gel formation, since the insoluble gel does not contribute to the viscosity of the solution. The product thus obtained has a markedly decreased rate of crystallization, and the brittle-point of the vulcanizates is 5℃ lower than those of the corresponding vulcanizates from Neoprene type GN-A.

    研究了以过硫酸钾为引发剂引发的氯丁二烯与异戊二烯的乳液共聚合,选择了乳化剂及调节剂,确定了共聚合的配方及条件。 当氯丁二烯与异戊二烯共聚合的转化率达80%时,仅有微量凝胶出现,并且粘度-转化率曲线上的高峯常常是凝胶开始生成的标志。 制得的氯丁二烯-异戊二烯共聚物结晶速率显著降低,其脆折点较氯丁橡胶-GN-A降低了5℃。

    Vinylidene fluoride has been successfully telomerized with carbon tetrachloride and perfluoro-t-butyl iodide as telogens; various new telomerization products and new compounds derived therefrom have been identified by NMR, IR, elemental analyses and chemical transformations. In agreement with our view that polar factors play an important part in deciding the orientation of free radical additions to vinylidene fluoride, it has been shown that the elcotrophilic radicals·CCl_3 and (CF_3)_3C·add to the methylene...

    Vinylidene fluoride has been successfully telomerized with carbon tetrachloride and perfluoro-t-butyl iodide as telogens; various new telomerization products and new compounds derived therefrom have been identified by NMR, IR, elemental analyses and chemical transformations. In agreement with our view that polar factors play an important part in deciding the orientation of free radical additions to vinylidene fluoride, it has been shown that the elcotrophilic radicals·CCl_3 and (CF_3)_3C·add to the methylene end of the alkene.Triethylamine has been used as the dehydrohalogenating agent in the following three reactions: (1) from CCl_3CH_2CF_2Cl (1) to the known compound CCl_12 = CHCF_2Cl (5); (2) from CCl_3CH_2CF_2CH_2CF_2Cl (6) to a mixture of CCl_2=CHCF_2CH_2CF_2Cl (7) and CCl_3 CH_2CF_2CH = CF_2 (8) ; and (3) from (CF_3)_3CCH_2CF_2I (3) to (CF_3)_3CCH = CF_2 (9).The reaction of diethylamine with the iodide 3 and (CF_3)_2CFCH_2CF_2I afforded the amides (CF_3)_3CCH_2CON (C_2H_5)_2 (10) and (CF_3)_2C=CH—CON (C_2H_5)_2 respectively. Dehydroiodination of 3 by KOH followed by hydrolysis yielded the perfluoro-t- butyl substituted acetic acid, (CF_3)_3CCH_2CO_2H(11).The exchange reaction of CCl_3CH_2CF_2Cl (1) with antimony fluorides was found to be able to proceed at relatively low temperature, fielding a mixture of CF_3CH_2CF_2Cl (18) and CF_2ClCH_2CF_2Cl (12). An unrearranged product, CCl_2=CHCF_3 (14) was obtained when the same reaction was applied to the alkene CCl_2 = CHCF_2Cl (5).The telomerization products Cl (CF_2CH_2)_nCCl_3 have been hydrolyzed in the strong acid medium to the corresponding carboxylic acids, Cl (CF_2CH_2)_nCOOH (n = 1~6).The alkaline salts of these acids Cl(CF_2CH_2)_nCOOM (n=3~5) have been proved to be good surfactants for emulsion polymerization of fluoro-olefins.

    偏氟乙烯能够分别与四氯化碳和全氟叔丁基碘进行自由基的调聚反应,得到新型的调聚物CCl_3(CH_2CF_2)_nCl(n=1~6)和(CF_3)_3C(CH_2CF_2)_nI(n=1,2)。调聚物的结构由核磁共振谱、红外光谱、元素分析和化学转化所证实。反应中亲电自由基·CCl_3与·C(CF_3)_3主要进攻偏氟乙烯上无氟碳原子,亦即在偏氟乙烯的自由基加成中,极性因素对加成方向起决定性作用。调聚产物CCl_3CH_2CF_2Cl、CCl_3CH_2CF_2CH_2CF_2Cl和(CF_3)_3CCH_2CF_2I用三乙胺脱卤化氢,得到烯烃CCl_2=CHCF_2Cl、CCl_2=CHCF_2CH_2CF_2Cl和(CF_3)_3CCH=CF_2·化合物(CF_3)_3CCH_2CF_2I和(CF_3)_2CFCH_2CF_2I先后用乙二胺和水处理,得到含氟酰胺,(CF_3)_3CCH_2CON(C_2H_5)_2和(CF_3)_2C=CHCON(C_2H_5)_2。(CF_3)_3CCH_2CF_2I先后用氢氧化钾和水处理,得到新的含氟羧酸(CF_3)_3CCH_2COOH,在较低温度下,用氟氯化锑处理CC...

    偏氟乙烯能够分别与四氯化碳和全氟叔丁基碘进行自由基的调聚反应,得到新型的调聚物CCl_3(CH_2CF_2)_nCl(n=1~6)和(CF_3)_3C(CH_2CF_2)_nI(n=1,2)。调聚物的结构由核磁共振谱、红外光谱、元素分析和化学转化所证实。反应中亲电自由基·CCl_3与·C(CF_3)_3主要进攻偏氟乙烯上无氟碳原子,亦即在偏氟乙烯的自由基加成中,极性因素对加成方向起决定性作用。调聚产物CCl_3CH_2CF_2Cl、CCl_3CH_2CF_2CH_2CF_2Cl和(CF_3)_3CCH_2CF_2I用三乙胺脱卤化氢,得到烯烃CCl_2=CHCF_2Cl、CCl_2=CHCF_2CH_2CF_2Cl和(CF_3)_3CCH=CF_2·化合物(CF_3)_3CCH_2CF_2I和(CF_3)_2CFCH_2CF_2I先后用乙二胺和水处理,得到含氟酰胺,(CF_3)_3CCH_2CON(C_2H_5)_2和(CF_3)_2C=CHCON(C_2H_5)_2。(CF_3)_3CCH_2CF_2I先后用氢氧化钾和水处理,得到新的含氟羧酸(CF_3)_3CCH_2COOH,在较低温度下,用氟氯化锑处理CCl_2=CHCF_2Cl,只得到氟化产物CCl_2=CH_2CF_3,而没有得到重排产物。调聚物Cl(CF_2CH_2)_nCCl_3(n=1~6)在强酸介质中,能水解成相应的羧酸Cl(CF_2CH_2)_nCOOH,这些酸的碱金属盐Cl(CF_2CH_2)_nCOOM(n=3~5)是良好的表面活性剂,可作为含氟烯烃聚合的乳化剂

     
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