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GB/T 19687-2005 PDF English

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GB/T 19687-2005: Determination of the long-term change in thermal resistance of closed-cell plastics (accelerated laboratory test methods)
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GB/T 19687-2005English544 Add to Cart 4 days [Need to translate] Determination of the long-term change in thermal resistance of closed-cell plastics (accelerated laboratory test methods)

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Basic data

Standard ID GB/T 19687-2005 (GB/T19687-2005)
Description (Translated English) Determination of the long-term change in thermal resistance of closed-cell plastics (accelerated laboratory test methods)
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Q25
Classification of International Standard 91.100.60
Word Count Estimation 21,234
Date of Issue 2005-03-17
Date of Implementation 2005-10-01
Adopted Standard ISO 11561-1999; IDT
Regulation (derived from) Announcement of Newly Approved National Standards No. 6, 2005 (No. 80 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: 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.

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