GB/T 19687-2005 English PDF

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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)
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 19687-2005	544	Add to Cart	4 days	Determination of the long-term change in thermal resistance of closed-cell plastics (accelerated laboratory test methods)	Valid

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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 colsed-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: 21,252
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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