【国外标准】 Standard Test Methods for Use of Emulsion Polymers in Floor Polishes

3.1 The purpose of this test is not to fully identify and characterize a polymer, but to identify a variety of basic parameters needed to predetermine the usefulness of the polymer in formulations as well as for Quality Control purposes.3.2 A statement of precision and accuracy is not appropriate in this case.1.1 These test methods cover test procedures for emulsion polymers that are used in water-based floor polishes. The term “emulsion polymers” is used primarily to denote those materials produced by regular emulsion polymerization techniques, but may be extended to those polymers that are subsequently emulsified or dispersed after polymerization. Unless otherwise noted, the tests may be used for any polymer or copolymer systems. The methods appear in the following order:    Section   Sampling 4  Total Solids 5  pH Value 6  Apparent Viscosity 7  Sediment 8  Storage Stability 9  Freeze-thaw Stability 10  Specific Gravity 111.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.