GB/T 4893.3-2020 PDF English
US$170.00 · In stock · Download in 9 secondsGB/T 4893.3-2020: Test of surface coatings of furniture - Part 3: Determination of resistance to dry heat Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB/T 4893.3: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 4893.3-2020 | English | 170 |
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Test of surface coatings of furniture - Part 3: Determination of resistance to dry heat
| Valid |
| GB/T 4893.3-2005 | English | 90 |
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Furniture -- Assessment of surface resistance to dry heat
| Obsolete |
| GB/T 4893.3-1985 | English | 199 |
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2 days
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Furniture--Assessment of surface resistance to dry heat
| Obsolete |
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GB/T 4893.3-2020: Test of surface coatings of furniture - Part 3: Determination of resistance to dry heat
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT4893.3-2020
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 97.140
Y 80
Replacing GB/T 4893.3-2005
Test of surface coatings of furniture - Part 3:
Determination of resistance to dry heat
ISSUED ON: JULY 21, 2020
IMPLEMENTED ON: FEBRUARY 01, 2021
Issued by: State Administration for Market Regulation;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 5
4 Principle ... 6
5 Test conditions ... 6
6 Reagents and materials ... 6
7 Instruments and equipment... 7
8 Sample ... 8
9 Test steps ... 8
10 Test data processing ... 9
11 Test report ... 10
Bibliography ... 11
Test of surface coatings of furniture - Part 3:
Determination of resistance to dry heat
1 Scope
This Part of GB/T 4893 specifies the method for determination of resistance to
dry heat.
This Part is applicable to all cured surfaces of painted furniture and the tests on
the surface of unused furniture or test panel.
This Part is not applicable to leather and textile surfaces.
2 Normative references
The following referenced documents are indispensable for the application of
this document. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any
amendments) applies.
GB/T 3190, Wrought aluminium and aluminium alloys - Chemical
composition limits
GB/T 3505, Geometrical Product Specifications (GPS) - Surface texture:
Profile method - Terms, definitions and surface texture parameters
GB/T 10610, Geometrical product specifications(GPS) - Surface texture:
Profile method - Rules and procedures for the assessment of surface texture
JB/T 9262, Liquid-in-glass industrial thermometers and laboratorial
thermometers
JB/T 9263.4, The types and fundamental sizes of solid-stem common
thermometers
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 test panel
On the test area, provide uniform diffused light and reach (1200±400)lx
illuminance in the test area. Diffuse natural light or diffuse artificial light can be
used.
NOTE: Daylight shall not be affected by surrounding trees. When using artificial daylight,
it is recommended that the correlated color temperature of the light is (6500±50)K, color
rendering index Ra is greater than 92 and use a colorimetric box that complies with GB/T
9761-2008 to obtain this light.
8 Sample
8.1 Specimen
The specimen can be painted furniture or test panel. The test panel shall use
the same material and the same coating method as the painted furniture, and
the size shall meet the test requirements.
8.2 Pretreatment
Before the test, it shall put the specimen in an environment with a temperature
of (23±2)°C and a relative humidity of (50±5)%, for at least 48h.
8.3 Test surface requirements
The test surface shall be flat and meet the size requirements of the test (see
9.2).
9 Test steps
9.1 After the specimen is pretreated, immediately put it in an environment with
a temperature of (23±2)°C to carry out the test.
9.2 The test surface shall be placed horizontally. It shall be large enough to
accommodate the number of tests required. Between adjacent test surfaces,
between the periphery of the test surface and the edge of the template, at least
15mm space shall be left. At the same time at the unfolded as the test, the
periphery of the test surface shall be separated by at least 50mm. If there is
any reason to believe that the performance of the test surface may change, two
identical tests shall be carried out at the same time.
9.3 Before the test, use a cleaning cloth (see 6.1) to wipe the test surface gently.
9.4 Use an oven (see 7.3) to heat the heat source block (see 7.2) to at least
10°C higher than the specified test temperature. The test temperature shall be
selected from the following temperatures according to the test requirements:
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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