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Rigid polyurethane foam for solar water heaters
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Basic data
| Standard ID | GB/T 26709-2011 (GB/T26709-2011) |
| Description (Translated English) | Rigid polyurethane foam for solar water heaters |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | G32 |
| Classification of International Standard | 83.100 |
| Word Count Estimation | 8,851 |
| Date of Issue | 2011-06-16 |
| Date of Implementation | 2011-12-01 |
| Quoted Standard | GB/T 2918-1998; GB/T 6343-2009; GB/T 8810-2005; GB/T 8811-2008; GB/T 8813-2008; GB/T 10294-2008; GB/T 10295-2008; GB/T 10799-2008; GB/T 21332-2008 |
| Regulation (derived from) | Announcement of Newly Approved National Standards No. 9 of 2011 |
| 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 use of solar water heaters, rigid polyurethane foam requirements, test methods and inspection rules. This standard applies to the polyisocyanate, polyether polyols, blowing agents as the main raw material, mixed injection solar water heater hot water storage tank insulation foam molding cavity preparation of closed-cell foam. |
GB/T 26709-2011: Rigid polyurethane foam for solar water heaters
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Rigid polyurethane foam for solar water heaters
ICS 83.100
G32
National Standards of People's Republic of China
Solar water heater with rigid polyurethane foam
Issued on. 2011-06-16
2011-12-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
The standard proposed by China National Light Industry Council.
This standard by the National Plastics Standardization Technical Committee (SAC/TC48) centralized.
Drafting of this standard. Nanjing Red Polaroid Co., Ltd., Beijing Technology and Business University, Yantai Wanhua Polyurethane Co., Ltd., North
Beijing Tsinghua Solar Energy Development Co., Ltd., Shandong Li Norit New Energy Co., Ltd., Zibo Polyurethane Co., Ltd. joint creation, Shandong Dong
Grand Polymer Co., Ltd., Jiangsu Province Product Quality Supervision and Inspection Institute, Jiangsu Institute of Chemical Co., Ltd.
The main drafters of this standard. Xingyi Hui, Chen Qian, Hanhuai Jiang, Li Jianguo, Ren Yong, Li Hongguo, Liu, Wang Yan, Wu Hao.
Solar water heater with rigid polyurethane foam
1 Scope
This standard specifies the use of solar water heaters, rigid polyurethane foam requirements, test methods and inspection rules.
This standard applies to the polyisocyanate, polyether polyol, a blowing agent as the main raw material, mixed injection of solar water heaters
Hot water storage tank insulation layer of closed cell foam cavity foam molding prepared.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 2918-1998 plastic sample conditioning and testing of the standard environment
GB/T 6343-2009 foam and rubber Determination of apparent density
Determination of GB/T 8810-2005 rigid foam water absorption
GB/T 8811-2008 rigid foam dimensional stability test methods
Measuring performance GB/T 8813-2008 rigid foam compression
GB/T 10294-2008 steady insulation resistance and related properties - Guarded hot plate method
GB/T 10295-2008 steady insulation resistance and related properties - Heat flow meter
Determination of GB/T 10799-2008 rigid foam volume percentage of open and closed cells
GB/T 21332-2008 Determination of rigid foam water vapor transmission properties
3 Requirements
Product performance should be consistent with the requirements of Table 1.
Table 1 Performance Requirements
Project Unit
Performance
All water blowing agent systems other blowing agent systems
Thermal Conductivity
After manufacture 7d ≤ W/(m · K) 0.026 0.023
After manufacturing 28d ≤ W/(m · K) 0.030 0.028
Compressive strength or deformation of 10% compression stress ≥ kPa 150 130
Dimensional stability
(100 ± 3) ℃, 48h ≤% 1.5
- (30 ± 3) ℃, 24h ≤% 1.0
The apparent core density kg/m3 32.0 ~ 45.0 30.0 ~ 40.0
Closed porosity (volume fraction) ≥% 90
Water absorption (volume fraction) ≤% 5.0
Water vapor permeability coefficient a (38 ℃/Relative humidity 0 ~ 88%) ≤ ng/(Pa · m · s) agreed upon by both parties
a general in the range ≤6.5.
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