ISO 16365-2:2014 プラスチック—成形および押出成形用の熱可塑性ポリウレタン—パート2：試験片の準備と特性の決定 | ページ 2

Foreword

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The committee responsible for this document is ISO/TC 61, Plastics, Subcommittee SC 9, Thermoplastic materials.

ISO 16365 consists of the following parts, under the general title Plastics — Thermoplastic polyurethanes for moulding and extrusion:

• Part 1: Designation system and basis for specifications
• Part 2: Preparation of test specimens and determination of properties
• Part 3: Distinction between ether and ester polyurethanes by determination of the ester group content

Introduction

Thermoplastic elastomer materials are classified into groups by the primary elastomeric property Hardness and with this as result of some relation with modulus, as shown in Figure 1. The classification on basis of hardness considers the special position of TPE's between the rubber materials on the one side and the plastic materials on the other.

Each class is subdivided in standard properties and special properties. The standard properties for a class are not only connected with the adjacent group(s) by many of the specified properties but also by special properties specified in the adjacent class(es). A standard property in a class can be a special property in an adjacent class and vice versa.

Special properties are those properties which are in wide use or of particular significance in the practical characterization of a specific material.

For each type of thermoplastic elastomer, refer to the relevant material standard.

1 Scope

This part of ISO 16365 specifies the methods of preparation of test specimens and the standard test methods to be used in determining the properties of thermoplastic polyurethane moulding and extrusion materials. Requirements for handling test material and for conditioning both the test material before moulding and the specimens before testing are also given.

Procedures and conditions for the preparation of test specimens in a specified state and procedures for measuring properties of the materials from which these specimens are given. Properties and test methods which are suitable and necessary to characterize thermoplastic polyester/polyurethane and polyether/polyurethane (TPU) moulding and extrusion materials, are listed.

The properties have been selected from the general test methods in ISO 10350. Other test methods in wide use or of particular significance to these moulding and extrusion materials are also included in this part of ISO 16365, as are the designatory properties specified in ISO 16365-1.

In order to obtain reproducible and comparable test results, it is necessary to use the methods of preparation and conditioning, the specimen dimensions, and the test procedures specified in this part of ISO 16365. Values determined are not necessarily identical to those obtained using specimens of different dimensions or prepared using different procedures.

2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.