GB/T 1634.1-2004: Plastics -- Determination of temperature of deflection under load -- Part 1: General test method

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Basic Data

Standard ID	GB/T 1634.1-2004 (GB/T1634.1-2004)
Description (Translated English)	Plastics. Determination of temperature of deflection under load. Part 1: General test method
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	G31
Classification of International Standard	83.080.10
Word Count Estimation	12,196
Date of Issue	2004-03-15
Date of Implementation	2004-12-01
Older Standard (superseded by this standard)	GB/T 1634-1979 (1989)
Quoted Standard	GB/T 1634.2-2004; GB/T 1634.3-2004; GB/T 2918-1998
Adopted Standard	ISO 75-1-2003; IDT
Regulation (derived from)	Announcement of Newly Approved National Standards No. 4, 2004 (No. 66 overall)
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China, China National Standardization Administration Committee
Summary	This standard specifies: Determination of plastic load (under two points of loading bending stress) deformation temperature method. To adapt to different types of materials, provides samples of different types and different a constant test load. 1, GB/T 1634 This standard specifies: Common test methods, Part 2 of plastic, hard rubber, and long fiber reinforced composites provides specific requirements, Part 3 of the high-strength thermosetting laminates provides specific requirements. 1. 3 requirements evaluation method is applicable to different types of materials under load, prescribed when the heating rate rose to a high temperature relative performance. The results are not necessarily indicative of its applicable the highest temperature. Prisoners of actual use mainly prisoners factors such as when asked, the nominal load conditions and surface stress, may be different from the test conditions. Only from room temperature flexural modulus of the same Material get data, have real comparable. 1. 4 Methods used in the provisions of the sample the preferred size, preparation of different sizes or different conditions sample test, may get different results. Therefore, When necessary, repeat data, should be carefully controlled and recorded sample preparation conditions and test variables. 1. 5 The test method used to get when data can not be used to predict the actual product end-use behavior, nor can be used to design, analyze or predict the material at high temperatures durability. 1. 6 Although GB/T 1634 Part 2 allows the use of two specimens placement, But the way is a priority to select flat and recommended it