陶氏特种表面活性剂及应用实例

• Customer Information Group – CIG 客户信息部门
– dowcig@dow.com
• Product Literature 产品资料
– Reference Chart 参考图表 – Application Brochures 应用手册
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Dow Specialty Surfactants in Emulsion Polymerization
Dow Specialty Surfactants in Emulsion Polymerization
陶氏特种表面活性剂 在乳液聚合领域的应用
The Dow Chemical Com来自百度文库any 陶氏化学 2007.4
http://www.dow.com/surfactants
Dow Specialty Surfactants in Emulsion Polymerization
Other Components 其它成分
Colloids 保护胶体 Buffers 缓冲剂 Post Additives 后添加剂 Plasticizers 增塑剂
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Dow Specialty Surfactants in Emulsion Polymerization
Monomer 单体
Why Emulsion Polymerization
乳液聚合优势
1. Cheap - Use Water as Medium no Solvent 廉价 – 水作介质
2. High Conversion Rate - (98 – 99% Conversion) 转化率高
3. High Molecular weight - (Above 0.5M) 分子量高
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Dow Specialty Surfactants in Emulsion Polymerization
Surfactant Literature
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Surfactants & Emulsion Polymerization
表面活性剂与乳液聚合
Dow Specialty Surfactants in Emulsion Polymerization
9 Emulsion polymerization is a type of polymerization that takes place in an emulsion typically incorporating water, monomer and surfactant. 聚合反应发生在由水、单体、表面活性剂组成的乳液体系中
9 The resultant stable suspension of polymer particles in water is called a latex. 得到的聚合物粒子在水中的分散液被称为胶乳
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Dow Specialty Surfactants in Emulsion Polymerization
Concentration 浓度
• Below CMC only unimers are present
• Above CMC there are micelles in equilibrium with unimers
低于CMC，溶液中只存在单分 子；高于CMC，溶液中胶束与 单分子共存。
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合成多种不同的共聚物 I
7. Broad end-use application
广泛的终端用途
M MM
M MM
8. Ease of application 使用方便
M
I
M MM
R.
I
M
M
M
M
M
M
M
M M
Micelle
Initiator
Free radical
Surfactant
Monomer droplet
MSDS
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Dow Specialty Surfactants in Emulsion Polymerization
Product Finder 产品搜寻
Select applications, features and receive product recommendations
Tg (°C)
105 20 31 80 103 100
Functional Monomers 功能性单体
Hydroxyl 羟基 Acid 酸 Amide 酰胺 Amine 胺
e.g. Hema, HEA e.g. MAA, AA e.g. AMD, NMA, nBMA e.g. DMAEMA
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Properties of Monomers: Tg, MFFT, Soft / Hard / Functional Monomers 单体性质：玻璃化温度，最低成膜温度，软单体，硬单体，功能性单体
Soft Monomers 软单体
Tg (°C)
Ethyl Acrylate (EA)
-24
n-Butyl Acrylate (BA)
9 Architectural Coatings 建筑涂料 9 Adhesives 胶粘剂 9 SB latex for Paper and Carpet 用于纸张和地毯的丁苯胶乳 9 Non-woven Binders 无纺布粘结乳液
9 Summary 总结
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Dow Surfactants Resources
amphiphilic compound
Solubilization 增溶
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TEST
Emulsion 乳液
Dispersion 分散体
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Dow Specialty Surfactants in Emulsion Polymerization
Emulsion Polymerization 乳液聚合
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Dow Specialty Surfactants in Emulsion Polymerization
Solubilization/Emulsifying/Dispersing
增溶/乳化/分散
Normal micelles 胶束
non-polar compound 非极性物质
Reverse micelles 反相胶束 polar compound 极性物质
Website 网站
http://www.dow.com/surfactants
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Dow Specialty Surfactants in Emulsion Polymerization
Product Information 产品信息
More product information, access to TDS and
4 nm
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Dow Specialty Surfactants in Emulsion Polymerization
Critical Micelle Concentration 临界胶束浓度
CMC
表面张力
AI R
A
AI R
B Adsorption
CMC
C
D
Micellisation
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Dow Specialty Surfactants in Emulsion Polymerization
Components Used In EP 组份
Main Components 主要成分
Monomers 单体 Surfactants 表面活性剂 Water 水 Initiators 引发剂
陶氏表面活性剂资源
Dow Specialty Surfactants in Emulsion Polymerization
Dow Surfactants Resources
陶氏表面活性剂资源
• Website 网站
– www.dow.com/surfactants – Product Finder 产品搜寻 – Formulation Finder 配方搜寻 – Answer Center 问答中心
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Dow Specialty Surfactants in Emulsion Polymerization
Role of Surfactant 表面活性剂的作用
• Rate of polymerization 聚合反应速率 • Degree of conversion 转化率 • Co-polymer composition 共聚物组成 • Control particle size and distribution 控制粒径及其分布 • Degree of coagulum 凝结物 • Polymer molecular weight 聚合物分子量 • Stability of latex 胶乳稳定性 • Viscosity of latex 胶乳粘度 • Surface tension 表面张力 • Film forming capability 成膜能力 • Post formulation capability 配方性能
Formulation Finder 配方搜寻
Starting formulations are easy to find.
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Dow Specialty Surfactants in Emulsion Polymerization
Answer Center 问答中心
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-57
2-Ethylhexyl Acrylate (2EHA) -50
Butadiene (B)
-77
Ethylene (E)
-80
Hard Monomers 硬单体
Methyl Methacrylate (MMA) n-Butyl Methacrylate (nBMA) Vinyl acetate (VA) Vinyl chloride (VC) Acrylonitrile (ACN) Styrene (ST)
4. High Solids with Low Viscosity - (60% -70%) 高固含量低粘度
5. Rapid reaction rate & better control of heat 反应快，容易控制
6. Versatility of making different co-polymers
Product recommendations
Selected application: Cleaning/ car care Feature: Silicone emulsifier
Product properties
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Dow Specialty Surfactants in Emulsion Polymerization
Surfactant Aggregates 聚集结构
Unimers 单分子
Normal micelles 正常胶束
Spherical 球状
Cylindrical 柱状
Inverted hexagonal phase 反向六角相
Reverse micelles 反相胶束 Bilayer lamella 双层
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Dow Specialty Surfactants in Emulsion Polymerization
Surfactant Choice Considerations
Outline 主要内容
9 Dow Surfactants Resources 陶氏表面活性剂资源 9 Surfactants & Emulsion Polymerization
表面活性剂与乳液聚合 9 Dow Specialty Surfactants Performance Review
陶氏特种表面活性剂性能概述 9 Dow Surfactants in Specific Applications 特定领域的应用
9 The most common type of emulsion polymerization is an oil-inwater emulsion, in which droplets of monomer (the oil) are emulsified (with surfactants) in a continuous phase of water. 乳液聚合一般发生在水包油乳液中，单体液滴通过表面活性剂乳化 在水中