1 Scope
This part of GB/T 1634 specifies a method for the determination of the temperature of deflection under load of high-strength thermosetting laminates. The flexural stress used is not fixed, as in GB/T 1634.2, but is a fraction (1/1 000) of the initial (room-temperature) flexural modulus of the material under test. This allows the method to be applied to materials with a wide range of flexural moduli.
For additional information, see GB/T 1634.1-20044, Clause 1.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of GB/T 1634. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this part. However parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 1634.1-2004 Plastics — Determination of Temperature of Deflection under Load — Part 1: General Test Method (ISO 75-1: 2003, IDT)
ISO 178:2001 Plastics — Determination of Flexural Properties
ISO 295:- Plastics — Compression Moulding of Test Specimens of Thermosetting Materials
ISO 1268-4:- Fibre-reinforced Plastics — Methods of Producing Test Plates — Part 4: Moulding of Prepregs
ISO 2818:1994 Plastics — Preparation of Test Specimens by Machining
ISO 10724-1:1998 Plastics — Injection Moulding of Test Specimens of Thermosetting Powder Moulding Compounds (PMCs) — Part 1: General Principles and Moulding of Multipurpose Test Specimens
Foreword II
1 Scope
2 Normative References
3 Terms and Definitions
4 Principle
5 Apparatus
6 Test Specimens
7 Conditioning
8 Procedure
9 Expression of results
10 Precision
11 Test Report
