QC/T 1137-2020 English PDF (QCT1137-2020)

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QC/T 1137-2020: Encapsulated Glazing for Road Vehicles
QC/T 1137-2020
QC
AUTOMOBILE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.60
T 34
Encapsulated Glazing for Road Vehicles
ISSUED ON: DECEMBER 09, 2020
IMPLEMENTED ON: APRIL 01, 2021
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword...6
1 Scope...7
2 Normative References... 7
3 Terms and Definitions...8
4 Classification... 10
5 Technical Requirements... 10
6 Test Methods... 16
7 Inspection Rules... 28
8 Packaging, Marking, Transportation and Storage... 30
Encapsulated Glazing for Road Vehicles
1 Scope
This Document specifies the terms and definitions, classification, technical
requirements, test methods, inspection rules, packaging, marking, transportation and
storage of encapsulated glazing for road vehicles.
This Document is applicable to encapsulated glazing for road vehicles produced by
injection molding process.
This Document is not applicable to encapsulated glazing for road vehicles produced
by the tape bonding process.
2 Normative References
The following documents are essential to the application of this Document. For the
dated documents, only the versions with the dates indicated are applicable to this
Document; for the undated documents, only the latest version (including all the
amendments) is applicable to this Document.
GB/T 250 Textiles - Tests for Colour Fastness - Grey Scale for Assessing Change
in Colour
GB 8410 Flammability of Automotive Interior Materials
GB 9656 Safety Glasses for Road Vehicles
GB/T 11942 Colorimetric Methods for Colour Building Materials
GB/T 17340 Road Vehicles - Safety Glasses - Dimensions, Shapes and
Appearances
GB 17930 Gasoline for Motor Vehicles
GB 19147 Automobile Diesel Fuels
GB/T 22523 Feeler Gauge
QC/T 643-2000 Vehicle- Test Method of Contact Stain- Sealing Strips
3.10 Shrink mark
Local depression marks on the surface that are caused by shrinkage.
3.11 Flow mark
Surface marks that are caused by poor flow of encapsulation material.
3.12 Gas mark
When the melt fails to adhere to the cavity due to gas interference during mold filling,
misty or scattered traces are formed on the surface of the product.
3.13 Encapsulation bright patches
Spot-like chromatic aberration defects that are partially shiny on the encapsulation
surface.
3.14 Weld bond
The wiring where two or more strands of molten material meet during the injection
molding process.
3.15 Orange peel grain
Orange peel grain that appears on the encapsulation surface.
3.16 White line
Visible white lines that are formed on the edge of the glass after injection molding.
3.17 Crack
Traces of cracks or ruptures in the encapsulation material
3.18 Parting line
The boundary line between the upper and lower molds of the injection mold or the
boundary line created by the splicing of the molds.
3.19 Datum
The locations or regional points that are predetermined for detection and positioning
on the encapsulated glazing.
5.10 Xenon lamp aging resistance
After the test, the encapsulation material shall have no defects such as cracking,
chalking, bubbles or sticking; and the grey scale shall be no lower than Level-4.
5.11 Chemical resistance
After the test, the encapsulation material shall have no defects such as cracking,
chalking, bubbles or sticking; and the grey scale shall be no lower than Level-4.
5.12 Pollution resistance
After the test, there shall be no traces or light-yellow contamination outlines on the
test panel.
5.13 Flame resistance
The burning speed of the encapsulation material shall not exceed 70 mm/min.
6 Test Methods
6.1 Test conditions
Except for special provisions, the test shall be carried out under the following
conditions:
a) Ambient temperature: 20°C±5°C;
b) Atmospheric pressure: 8.60×104Pa~1.06×105Pa;
c) Relative humidity: 40%~80%.
6.2 Appearance quality
6.2.1 For the cleavage requirements in Table 2, take the product as the specimen, and
compare the difference between the specimen and the colour plate by visual
inspection.
6.2.2 For the colour requirements in Table 2, take the product as the specimen,
compare the difference between the specimen and the colour plate by visual
inspection; when there is a visual difference, test according to the provisions of GB/T
11942.
6.2.3 For the appearance quality requirements other than the cleavage and colour in
Table 2, take the product as the specimen, and place the specimen on the inspection
bench at an ambient illuminance above 1000Lx. The inspector is 600mm~800mm
Figure 3 – Schematic Diagram of Bonding Strength Test of Metal Peg after
Encapsulation
6.6 Low temperature resistance
6.6.1 Specimen
Take the product as the specimen; and the quantity shall be in accordance with the
requirements of 6.5. Place the specimen for at least 72h under the test conditions
specified in 6.1 before the test.
6.6.2 Test device
In the environmental test chamber, the temperature deviation range shall be within
±2°C, and the temperature uniformity shall be no greater than 2°C.
6.6.3 Test procedures
6.6.3.1 Place the specimen in a test chamber at a temperature of -40°C±2°C for 48h;
and then take it out and place it for 2h under the test conditions specified in 6.1.
6.6.3.2 Visually inspect the appearance of the specimen; and record the appearance
state.
6.6.3.3 Carry out the bonding strength test between the encapsulation material and
the glass according to the procedures in 6.5.1.3.
6.6.3.4 For specimens with metal peg, carry out the bonding strength test according to
the procedures in 6.5.2.2.3.
6.7 High temperature resistance
6.7.1 Specimen
Take the product as the specimen; and the quantity shall be in accordance with the
requirements of 6.5. Place the specimen for at least 72h under the test conditions
specified in 6.1 before the test.
6.7.2 Test device
In the environmental test chamber, the temperature deviation range shall be within
±2°C, and the temperature uniformity shall be no greater than 2°C.
6.7.3 Test procedures
6.7.3.1 Place the specimen in a test chamber at a temperature of 85°C±3°C for 168h;
and then take it out and place it under the test conditions specified in 6.1 for 2h.
6.7.3.2 Visually inspect the appearance of the specimen; and record the appearance
state.
6.7.3.3 Carry out the bonding strength test between the encapsulation material and
the glass according to the procedures in 6.5.1.3.
6.7.3.4 For specimens with metal peg, carry out the bonding strength test according to
the procedures in 6.5.2.2.3.
6.8 Humidity resistance
6.8.1 Specimen
Take the product as the specimen; and the quantity shall be in accordance with the
requirements of 6.5. Place the specimen for at least 72h under the test conditions
specified in 6.1 before the test.
6.8.2 Test device
Environmental test chamber. Accuracy requirements: temperature deviation range
shall be within ±2°C, relative humidity deviation range shall be within ±4%;
temperature uniformity shall be no greater than 2°C; relative humidity uniformity shall
be no greater than 4%.
6.8.3 Test procedures
6.8.3.1 Place the specimen in a test chamber at a temperature of 50°C±3°C and a
relative humidity of 95%±4% for 240h; and then take it out and place it for 2h under
the test conditions specified in 6.1.
6.8.3.2 Visually inspect the appearance of the specimen and record the a...