Water Dispersible Granules:
An Overview
催化剂12.1
水分散粒剂概要
•Topics主题
•Terms术语
•Granulation Techniques造粒技术 断纸机•Technique parameters技术参数
•Agglomeration Strength团聚强度
»Binding粘合物
•Formulation example配方示例
•Akzo products for WDG’s
用于水分散粒剂的阿克苏产品
•Terms术语
1.Dispersant – a surfactant that causes the break up of the granules to
their primary particle size. Also gives the suspensibility properties of
the dispersed WDG. Can work through electrostatic or steric repulsion.
分散剂-----使颗粒崩解为原始颗粒大小的一种表面活性剂，同时使分散 了的水分散粒剂具有悬浮性能，可通过静电力或空间排斥力产生作用。
2.Wetting agent – a surfactant that speeds up the uptake of water into a
granule. 润湿剂-----一种加速颗粒吸收水分的表面活性剂。
3.Flow aid – an inert that improves the flow properties of the powder to
be granulated. Fumed or precipitated silica as examples. 助流剂-----
是一种惰性物，可增加粉体的流动性以致于更好成粒，例如气相法或沉贴片式称重料位计
淀法二氧化硅。
4.Binder – an additive that increases the bonding strength in the final打印头校准
product. Can be a liquid or solid, surfactant or non-surfactant.
Examples are CMC, salt, water and sodium lauryl sulfate. 粘结剂-----
是一种添加剂，可以提高最终成品的粘合强度，可以是液体或固体表面
活性剂或非表面活性剂。例如羧甲基纤维素、盐、水和十二烷基硫酸钠。
隐私保护通话•Terms
5. Filler – used to fill a void, or adjust the active content, in a
formulation. Typically non-surfactant. Can be water soluble or
water insoluble.填料---在制剂中，填料用于填补空余部分，或用
于调节有效成分的含量。典型的是非表面活性剂。它可以是水溶
的，也可以是水不溶的。
6. Attrition – granule breakdown during handling and
transportation. Can cause dustiness of the dry product.磨耗---
在处理和运输过程中脱落的粒子，干粉产品可产生粉尘。
7. Crush pressure – the amount of force needed to crush a dry
granule. A good indicator of particle to particle binding.粉碎压力
-
--粉碎一个干颗粒所需的力度。是评价颗粒之间相互粘结程度的
一个很好指标。
8. Agglomerate – a binding of small, discrete particles into a large
matrix团聚作用---连结小的、独立的粒子形成大的团聚物的作用 9. Granulation – the formation of agglomerates from small
particles via a mechanical process造粒---通过机械作用，使小
放血槽
颗料形成团聚物的过程。
•Terms
10. Extrusion – the formation of cylindrical agglomerates by forcing a wet, or molten feed through a screen.挤压造粒---通过一个筛网施加压力于湿的、熔化的物料，从而形成圆柱状的凝聚物。11. 11. Spherinization Spherinization – conversion of cylindrical granules into round granules by high speed spinning.成球---通过高速旋转，将圆柱状的颗粒转化成圆的颗粒。
12. Compaction – agglomerates are formed using pressure. Typically a anhydrous process.压制成型造粒---利用压力使凝聚物成形。典型的无水过程 。
13. Spray drying – formation of agglomerates by the evaporation of water from a slurry, as the slurry is sprayed down a heated tower.喷雾干燥造粒--- 当浆料喷雾下热塔时，凝聚物通过浆料蒸发去水形成。
14. Fluidized spray bed – spraying a slurry into a heated chamber and evaporating the water. Granule size in increased by a coating or clustering effect.流化床喷雾造粒---喷雾浆料于热室中并蒸发去水，颗粒的大小会被包覆或簇效应而增加。
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