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GB/T 19687-2005Determination of the long-term change in thermal resistance of closed-cell plastics (accelerated laboratory test methods) (English PDF)

闭孔塑料长期热阻变化的测定实验室加速测试方法

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Issued by

General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China, China National Standardization Administration Committee

Level / Type

National · Recommended

Issue date

March 17, 2005

Implementation date

October 1, 2005

Scope

GB/T 19687-2005 is the English-translated version of 闭孔塑料长期热阻变化的测定实验室加速测试方法.

GB/T 19687-2005 — This standard specifies: two approaches to measuring with filling gas because of the proliferation of closed-cell plastic and cause change over time thermal resistance.

Using standard methods to test the thermal resistance, Method A is placed in a controlled temperature environment time tested regularly sheet thermal methods. This test method and numerical processing large thickness of the material to exit the thermal change over time function.

Method B provides a non- stick surface obturator plastic Thermal design life period Test methods. This method is currently only applies to non- stick surface a homogeneous material.

For this method, If the material the core and the surface made ??- on the initial specimen thickness direction thermal and thermal resistance over time less than 10% change in the sample material can be considered uniform -.

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Document preview — GB/T 19687-2005

National Standard of the People's Republic of China

ICS: 91.100.60
Classification: Q 25

Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China, China National Standardization Administration Committee

What this standard covers1
Document data2

What this standard covers

This standard specifies: two approaches to measuring with filling gas because of the proliferation of closed-cell plastic and cause change over time thermal resistance. Using standard methods to test the thermal resistance, Method A is placed in a controlled temperature environment time tested regularly sheet thermal methods. This test method and numerical processing large thickness of the material to exit the thermal change over time function. Method B provides a non- stick surface obturator plastic Thermal design life period Test methods. This method is currently only applies to non- stick surface a homogeneous material. For this method, If the material the core and the surface made ??- on the initial specimen thickness direction thermal and thermal resistance over time less than 10% change in the sample material can be considered uniform -. Typically natural epidermis or normal variations in density the sample material can be considered homogeneous.

Document data

International classification (ICS): 91.100.60.

Chinese classification (CCS): Q25.

Estimated length of the Chinese original: 21,234 words.

Adopted international standard: ISO 11561-1999; IDT.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 14 pages — is available in the English PDF.

Referenced standards

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