标准摘要
[中文适用范围]: 本文件规定了两种测定聚合物分散体和橡胶胶乳(天然和合成)表面张力的方法。 — 方法 A 为环法(Du Noüy 环法)。 — 方法 B 是平板法(Wilhelmy 平板法)。 方法A适用于粘度小于200 mPa·s的聚合物分散体和橡胶胶乳。 方法B不适用于含有阳离子表面活性剂的聚合物分散体和橡胶胶乳。 方法 A 和 B 也适用于预硫化胶乳和复合材料。 如有争议,首选方法是方法 A(环法)。 [外文原描述]: This document specifies two methods for the determination of the surface tension of polymer dispersions and rubber latices (natural and synthetic). — Method A is the ring method (Du Noüy ring method). — Method B is the plate method (Wilhelmy plate method). Method A is suitable valid for polymer dispersions and rubber latices with a viscosity less than 200 mPa·s. Method B is not suitable for polymer dispersions and rubber latices containing cationic surfactants. Methods A and B are also suitable for prevulcanized latices and compounded material. In case of dispute, the preferred method is method A (the ring method).
英文名称Plastics/rubber — Polymer dispersions and rubber latices (natural and synthetic) — Determination of surface tension