保护胶体

研究了喷雾液pH值、保护胶体用量及进口温度等对乳胶粉性能的影响。

The influence of the pH value , the content of protective colloid and the inlet temperature on re-dispersible powders properties were studied .

以PAM，CMC和EC代替PVA作醋酸乙烯酯乳液聚合保护胶体的研究

Study on the emulsion polymerization of vinyl acetate with PAM , CMC and EC in place of PVA as protective colloid

结果表明：保护胶体的用量和pH值对微胶囊制备的成囊性和ζ电位有至关重要的作用，它直接影响微胶囊制备的成败以及胶囊粒子的平均粒度和粒径分布；

The results indicated that the pH value and the dosage of the protective colloid had important effects on zeta value and encapsulation in the process of in-situ polymerization .

结果表明，提高乳化剂的用量、乳化速度和乳化时间，使分散染料微胶囊的释放速率提高；而增加保护胶体PVA的用量，分散染料微胶囊的释放速率下降。

Results indicated that the release rate increased with increases in the amount of emulsifier and emulsifying rate and time , and decreased with the increase of PVA protective colloids .

以分子链一端为巯基的聚乙烯醇（PVA-SH）为保护胶体，合成了空间稳定的硅氧烷改性丙烯酸酯聚合物乳液。

Steric stabilized siloxane hybrid acrylic polymer ( SSPA ) dispersion was prepared by surfactant-free emulsion polymerization with thiol group terminated polyvinyl alcohol ( PVA-SH ) as protective colloid .

以分子链末端为巯基的部分水解聚乙烯醇（PVA-SH）为保护胶体，采用半连续乳液聚合工艺合成出具有高机械稳定性的高固含量聚甲基丙烯酸甲酯-丙烯酸丁酯（MMA/BA）共聚物乳液。

Highly shear-stable copolymer dispersions with high solid contents of methyl methacrylate ( MMA ) and butyl acrylate ( BA ) were prepared using the semicontinuous emulsion polymerization , with thiol-ended poly ( vinyl alcohol ) ( PVA-SH ) as the protective colloid .

聚醋酸乙烯乳液保护胶体的改性

Modifications of protective colloid in poly ( vinyl acetate ) emulsion

膨化糯米粉用作乳液聚合保护胶体的研究

Study on Swollen Glutinous Rice Powder as Emulsion Polymerization Protective Colloids

保护胶体在高固含量弹性丙烯酸酯乳液聚合中的应用

Application of Protective Colloid in Polymerization of High Solid Elastic Acrylate Emulsion

保护胶体对聚甲基丙烯酸甲酯热敏型微胶囊性能的影响

Effect of Protective Colloid on Properties of Poly ( methylmethacrylate ) Heat-sensitive Microcapsule

乳液聚合中保护胶体的研究进展

Research progress of protective colloid in emulsion polymerization

用保护胶体稳定的丙烯酸酯乳液的流变性

Rheology of Acrylic Emulsion Stabilized by Protective Colloid

在保护胶体存在下，通过乳液聚合制得了可再分散性聚合物粉末。

A sort of redispersible polymer powder was synthesized with the method of emulsion polymerization .

利用化学方法，在不同保护胶体下制备了可再分散聚合物粉末。

Redispersible polymer powders were prepared with different protective colloids by way of chemical process .

以聚乙烯醇缩甲醛为保护胶体，合成聚醋酸乙烯乳液。

Polyvinyl formal was used as protective colloid to produce a new polyethylene acetate emulsion .

分别采用常规乳化剂和羟乙基纤维素为保护胶体制备丙烯酸酯乳液。

The title emulsion has been prepared based on conventional emulsifier and hydroxyethyl cellulose as protective colloid .

一般是由聚合物乳液经保护胶体等改性后，通过喷雾干燥而制得。

It is made by means of spray - drying from the emulsion . modified by protective colloids .

醋酸乙烯乳液聚合中保护胶体与单体接枝反应的研究

Grafting Reaction in the Emulsion Polymerization of Vinyl Acetate with Poly ( Vinyl Alcohol ) as Protective Colloid

分别从醋酸乙烯单体、乳化剂、保护胶体入手，分析了聚醋酸乙烯酯乳液耐水性差的原因。

From vinylacetate monomer , emulsifier , protective colloid , the reasons for poor water resistance are analyzed .

实验结果显示，聚丙烯酰胺、乙基纤维素可以作为醋酸乙烯乳液聚合的保护胶体。

It is concluded that PAM and EC could be used as protective colloid in the emulsion polymerization of vinyl acetate .

研究了以聚乙烯醇作保护胶体，用分光光度法测定水泥及熟料中氯离子的实验条件。

The experiment condition to determine chloridion in cement and clinker with spectrophotography , using polyvinyl alcohol as protective colloid , was studied .

影响乳液性能的主要因素是稀释剂、醋酸乙烯质量以及乳化剂、保护胶体的品种和用量。

The amin factors affecting property of the emulsion are diluting agent , quality of vinyl acetate and type and content of emulsifying agent , protective colloid .

研究了以聚乙烯醇为保护胶体的醋酸乙烯乳液聚合中，作为保护胶体的聚乙烯醇与醋酸乙烯的接枝反应。

The grafting reaction of vinyl acetate with polyvinyl alcohol which was regarded as the protecting colloid in the emulsion polymerization of vinyl acetate was investigated in this paper .

卷烟搭口胶的保护胶体含量较低、乳液粒子的成型是影响旋转黏度测定值的主要因素，卷烟接嘴胶的保护胶体含量较高，保护胶体的含量是影响涂-4杯黏度值的主要因素。

Cigarette holder adhesive has a higher protective colloid content , the main factor which influences the measured value of Tu-4 cup viscosity is the content of the protective colloid .

在相同剪切速率下，保护胶体制备的丙烯酸酯乳液的剪切力明显大于常规乳液的剪切力，该乳液在一定剪切速率范围内有剪切稀化现象。

At the same shear rate , the acrylic ( emulsion ) with protective colloid shows higher shearing force than conventional emulsions and shearing dilution phenomena in a specific range of shear rate .

通过对乳液的粒子形态、压缩剪切强度、粘度、冻融稳定性的分析，讨论了不同性质的聚乙烯醇作为保护胶体，对聚醋酸乙烯乳液胶粘剂性能的影响。

The influences of difference property polyvinyl alcohol as protective colloid on performance of polyvinyl acetate emulsion through analysis of emulsion particle shape , compression shear strength , viscosity , freeze-thaw stability were discussed .

介绍了乳液聚合中保护胶体稳定聚合物乳液的机理，详细综述了保护胶体在乙烯基单体、共轭烯单体和丙烯酸酯类单体乳液聚合中的研究进展。

The mechanisms of protective colloid in emulsion polymerization were introduced . Research advance of protective colloid in the emulsion polymerization of vinyl monomer , conjugated monomer and acrylic monomer were reviewed in detail .

主要研究了在以聚乙烯醇为保护胶体的醋酸乙烯乳液聚合中，乳液与环氧丙烯酸酯、聚氨酯、硅烷等官能团的接枝反应。

The grafting reactions between emulsion and functional groups , such as epoxy acrylate , polyurethane and silane in the process of emulsion polymerization of vinyl acetate ( VAc ) with poly ( vinyl alcohol )( PVA ) as protective colloid are studied .

保护胶体的作用主要是乳化稳定和电荷效应，它能有效的使壁材在芯材液滴表面沉积和进行缩聚反应并抑止其在水相中的副反应。

The primary action of the protective colloid is the stable emulsification and electron charge effect , which can efficiently make the wall material to deposit and polymerize on the surface of droplet , and to prevent the side reaction in the water phase .

本文详细研究了无氮气保护下胶体铜催化剂的制备条件。

This paper studies the optimal reaction conditions for the preparation of colloidal copper catalysts without protection of N_2 .