保定市分散剂厂

Also known as dispersant wetting and dispersing agent, which has the moist effect, the active groups can be adsorbed on the surface of the pigment is crushed into fine particles, the other end of the solvent into the paint form adsorption layer (adsorption medium more chain is longer, thicker adsorption layer), charge repulsion (or water paint) entropic repulsion (solvent type coating), the pigment particles suspended in the medium term dispersion paint, avoid flocculation, thus ensuring stable storage system made of paint.

分散剂有很多种，初步估算，现存世界上有1000多种物质具有分散作用。现按其结构来区分，可分为以下7种类型。

There are many kinds of dispersants. It is preliminarily estimated that more than 1000 kinds of substances in the world are dispersed. According to its structure, it can be divided into the following 7 types.

阴离子型润湿分散剂

Anionic wetting dispersant

大部分是由非极性带负电荷的亲油的碳氢链部分和极性的亲水的基团构成。2种基团分别处在分子的两端，形成不对称的亲水亲油分子结构。它的品种有：油酸钠C17H33COONa、羧酸盐、硫酸酯盐（R—O—SO3Na）、磺酸盐（R—SO3Na）等。阴离子分散剂相容性好，被广泛应用于水性涂料及油墨中。多元羧酸聚合物等也可应用于溶剂型涂料，并作为受控絮凝型分散剂广泛使用。

Most of them are composed of non polar negatively charged hydrocarbon chain parts and polar hydrophilic groups. The 2 groups are at both ends of the molecule, forming an asymmetric hydrophilic hydrophobic molecular structure. Its varieties are: sodium oleate C17H33COONa, carboxylate, sulphate (R - O - SO3Na), sulfonate (R - SO3Na) and so on. The anionic dispersant has good compatibility and is widely used in water-based coatings and inks. Polycarboxylic acid polymers, etc., can also be used in solvent based coatings and are widely used as controlled flocculating dispersants.

阳离子型润湿分散剂

Cationic wetting dispersant

是非极性基带正电荷的化合物，主要有胺盐、季胺盐、吡啶鎓盐等。阳离子表面活性剂吸附力强，对炭黑、各种氧化铁、有机颜料类分散效果较好，但要注意其与基料中羧基起化学反应，还要注意不要与阴离子分散剂同时使用。

Is a compound of non polar baseband positive charge, the main amine salt, Ji Anyan, pyridinium salts etc.. Cationic surfactant has strong adsorption capacity, and has good dispersing effect on carbon black, iron oxide and organic pigments. But it should be noted that it has chemical reaction with carboxyl group in base material, and we should pay attention not to use it simultaneously with anionic dispersant.

非离子型润湿分散剂

Nonionic wetting dispersant

在水中不电离、不带电荷，在颜料表面吸附比较弱，主要在水系涂料中使用。主要分为乙二醇性和多元醇型，降低表面张力和提高润湿性。与阴离子型分散剂配合使用作为润湿剂或乳化剂，广泛应用于水性色浆、水性涂料及油墨中。

It is not ionized and uncharged in water, and is weakly adsorbed on the surface of the pigment. It is mainly used in water system coatings. It is mainly divided into ethylene glycol and polyol type, which reduces surface tension and improves wettability. With anionic dispersant used as a wetting agent or emulsifier, it is widely used in water-based color pulp, water-based coatings and inks.

两性型润湿分散剂

Amphoteric wetting dispersant

是由阴离子和阳离子所组成的化合物。典型应用的是磷酸酯盐型的高分子聚合物。这类聚合物酸值较高，可能会影响层间附着力。

A compound composed of anions and cations. The typical application is the phosphate salt type polymer. The high acid value of this kind of polymer may affect interlayer adhesion.

电中性型润湿分散剂

Electric neutral wetting dispersant

分子中阴离子和阳离子有机基团的大小基本相等，整个分子呈现中性，但却具有极性。如油氨基油酸酯C18H35NH3OOCC17H33等均属于这种类型，在涂料中应用相当广泛。

The size of the anion and cation organic groups in the molecule is basically equal, and the whole molecule is neutral, but it has the polarity. Such as oil amino oleate C18H35NH3OOCC17H33, etc. all belong to this type, and are widely used in the coatings.

高分子型超分散剂

High polymer superdispersant

高分子型分散剂最为常用，稳定性也最佳。高分子型分散剂也分为多己内多酯多元醇-多乙烯亚胺嵌段共聚物型分散剂、丙烯酸酯高分子型分散剂、聚氨酯或聚酯型高分子分散剂等，由于它们的锚定基团一头与树脂缠绕吸附，另一头又与颜料粒子包附，因此贮存稳定性是比较好的。

The polymer dispersing agent is the most commonly used, and the stability is also the best. Polymer dispersant is also divided into has multi ester polyols - ethylene imine copolymer dispersant, acrylate polymer dispersing agent, polyurethane or polyester polymer dispersing agent, because of their anchoring groups and a head wound resin adsorption, the other end with pigment particles coated, so the storage stability is good.

受控自由基型超分散剂

Controlled free radical superdispersant

采用最新的受控自由基聚合技术（CFPP），可以使分散剂的结构更为规整。常用的方法有：GTP、ATRP（原子转移自由基聚合）、RAFT（可逆加成断裂链转移可控自由基聚合，包括C-RAFT及S-RAFT等）、NMP、SFRP（稳定自由基聚合）、TEMPO等。通过采用受控自由基聚合技术，可以使分散剂的相对分子质量分布更为集中，锚定基团也更为集中，效率更高。

The latest controlled free radical polymerization (CFPP) can make the structure of the dispersant more regular. The commonly used methods are GTP, ATRP (atom transfer radical polymerization), RAFT (reversible addition fragmentation chain transfer controlled free radical polymerization, including C-RAFT and S-RAFT, etc.), NMP, SFRP (stable radical polymerization), TEMPO, etc. By using the controlled free radical polymerization technology, the distribution of the molecular weight of the dispersant is more concentrated, the anchoring group is more concentrated and the efficiency is higher.