This standard specifies the method for determining the water absorption of foam plastics. This standard is applicable to polystyrene foam plastics, rigid polyurethane foam plastics, rigid phenolic foam plastics, and polyethylene foam plastics. QB/T 2669-2004 Test method for water absorption of foam plastics QB/T2669-2004 Standard download decompression password: www.bzxz.net

JCSB3.100
Classification number: G32
Requisition number: 15135-2005bZxz.net
Light Industry Standard of the People's Republic of China
QB/T2669-2004
Test method for water absorption of cellular plastics
Test method for water absorption of cellular plastics2004-12-14 Issued
National Development and Reform Commission of the People's Republic of China Implemented on 2005-06-01
QB/T2669
This standard corresponds to Japanese industry standard JI5A9511-20034 5.11 Determination of water absorption in cellular plastics for thermal insulation, and is equivalent to TSA9511-2003 in the following degree.
The standard was proposed by China Light Industry Federation. This standard is under the jurisdiction of the Standardization Center for Plastic Products for Umbrellas: Yun Standard Drafting Unit: Light Industry Material Processing and Application Research Institute of Beijing Technology and Business University. This standard is initiated by: Li Jieye, Shi Chuang: Enterprise Standard is released for the first time.
1 Scope
Test method for water absorption of foam plastics
The standard specifies the method for testing the water absorption of foam plastics. QR/T2669—2004
This standard is applicable to polyurethane foam plastics, rigid polyurethane foam plastics, light foam plastics, and polyvinyl foam plastics. 2 Normative references
The clauses in the following documents have also become the clauses of public standards through the use of this standard. For referenced documents with a specified date, the amendments (excluding errata) or revisions to the standards are not applicable to this standard. However, the parties to the agreement on this standard shall use the latest versions of these documents. For all referenced documents with a specified date, the latest version shall apply to this standard. (B/2918-1998 Standard environment for the adjustment and testing of plastics (ID[S0291:1997) (/T6342-1996 Determination of the contact dimensions of foam and rubberWater, the depth of which is 50mm: take the sample after 10s selection, and the water on the surface of the gauze is large, and there is ethanol towel for a short time, and then use gauze to kneel down. Weigh the base with an accuracy of 0.01, and the measured mass is taken as the initial mass. 6.2.2.3 The material is incubated for 24h, and the operation is carried out according to 6.2.2.2. The mass after the measurement is the pre-adjusted mass. The result is expressed and calculated by the formula of 3 people's cut results and the final absorption: 55
When the absorption is x, the single promotion is grams per 100 half cubic meters (g/mcm), the final mass is , single for (g);
m. · Cut quality. Single for grams (g);
Shanti, single for half a single (cm\) 8 Test report
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