GB/T 8812.1-2007: Rigid cellular plastics -- Determination of flexural properties -- Part 1: Basic bending test

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Scope

This Part of GB/T 8812 specifies a test method for determining the load or breaking load of
rigid cellular plastic specimens at a specified deformation under the action of three-point
bending load.
This Part is applicable to materials with a thickness of not less than 20 mm.
This Part is not applicable to easily crushable cellular plastics.
This method uses small-sized specimens and does not generate pure bending deformation.
Therefore, it cannot be used to calculate flexural strength or apparent flexural modulus of
elasticity.
The determined values can only be compared when the physical properties and dimensions of
the materials are similar.

Basic Data

Standard ID	GB/T 8812.1-2007 (GB/T8812.1-2007)
Description (Translated English)	Rigid cellular plastics -- Determination of flexural properties -- Part 1: Basic bending test
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	G32
Classification of International Standard	83.100
Word Count Estimation	6,649
Date of Issue	2007-12-05
Date of Implementation	2008-09-01
Older Standard (superseded by this standard)	GB/T 8812-1988
Quoted Standard	GB/T 2918; GB/T 6342
Adopted Standard	ISO 1209-1-2004, IDT
Regulation (derived from)	China National Standard Approval Announcement2007 No.13 (Total No.113)
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the three-point bending load in the role of test methods used to load or breaking load deformation under the provisions of rigid foam sample measurement. This section applies to a thickness of not less than 20mm of material. This section does not apply easy to crush the foam. This method uses a small sample, and does not produce pure bending, and therefore can not be used to calculate the apparent flexural strength or flexural modulus of elasticity. Only when the physical properties of the material and dimensions similar to the measured value to compare with each other.