QC/T 985-2024 English PDF (QCT985-2024)

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QC/T 985-2024: Automotive solar reflective coated laminated windscreen
QC/T 985-2024
QC
AUTOMOTIVE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.60
CCS T 26
Replacing QC/T 985-2014
Automotive solar reflective coated laminated windscreen
ISSUED ON: JULY 19, 2024
IMPLEMENTED ON: JANUARY 01, 2025
Issued by: Ministry of Industry and Information Technology of the People's
Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 Product classification ... 7
5 Technical requirements ... 7
6 Test methods ... 10
7 Inspection rules ... 16
8 Packaging, marking, transportation and storage ... 20
Automotive solar reflective coated laminated windscreen
1 Scope
This document specifies the terms and definitions, product classification, technical
requirements, test methods, inspection rules, packaging, marking, transportation and
storage for automotive solar reflective coated laminated windscreen.
This document is applicable to automotive solar reflective coated laminated windscreen,
and as a reference to automotive solar reflective coated laminated non-windscreen.
2 Normative references
The following documents are referred to in the text in such a way that some or all of
their content constitutes requirements of this document. For dated references, only the
version corresponding to that date is applicable to this document; for undated references,
the latest version (including all amendments) is applicable to this document.
GB/T 5137.2, Test methods of safety glazing materials used on road vehicles - Part
2: Optical properties tests
GB/T 5137.4, Test methods of safety glazing materials used on road vehicles - Part
4: Determination of solar characteristic
GB 9656, Safety technical specification for glazing materials used in power-driven
vehicles
GB/T 10125-2021, Corrosion tests in artificial atmospheres - Salt spray tests
GB 11555, Motor vehicles - Windshield demisting and defrosting systems -
Performance requirements and test methods
GB/T 11942, Test method of chroma for colour building materials
GB/T 44153, General technical requirements for glazing materials used in power-
driven vehicles
GB/T 43299, Test methods of electrical heating properties for glazing materials
used in power-driven vehicles
JC/T 512, Packaging of automobile safety glass
QC/T 1119, Road vehicles - Safety glazing materials - Vocabulary
boundary ghosting
The state where the boundary of the film layer of the coated glass appears to be too
wide, with an uneven transition or yellowing and diffusion.
3.8
electro-magnetic field aperture
The coating-removed or uncoated area on the solar reflective coated laminated
windscreen to realize the vehicle-mounted wireless signal transmission function.
4 Product classification
Automobile solar reflective coated laminated windscreens are divided into heating type
and non-heating type according to whether they have heating function; and are divided
into Class I, Class II and Class III according to the total solar energy transmittance.
5 Technical requirements
5.1 Thickness deviation, size deviation, fit, overlap, edge quality, marking quality,
edge stress, pedestrian impact safety
Shall meet the requirements of GB/T 44153 or relevant technical conditions.
5.2 Vision safety performance, strength safety performance and environmental
durability safety performance
The vision safety performance (visible light transmittance, secondary image deviation,
light distortion), strength safety performance (human head model impact performance,
penetration resistance, impact resistance), and environmental durability safety
performance (wear resistance, heat resistance, radiation resistance, moisture resistance)
shall comply with the requirements for laminated safety glass for windscreens in GB
9656.
5.3 Appearance quality
5.3.1 The automotive solar reflective coated laminated windscreen shall comply with
the appearance quality requirements of GB/T 44153.
5.3.2 Coated glass shall also meet the requirements of Table 1.
5.9 Electrical attachment pull-out force
For an electrical plug with one end placed inside the laminated glass and in contact with
the coated surface, the pull-out force shall not be less than 50 N.
5.10 Overpressure
The circuit shall be turned on after the test, and the power change rate before and after
the test shall not be greater than 5%.
5.11 Resistance to low temperature electrical and thermal shock
After the test, the test sample shall not break, and the part beyond 15 mm of the edge
of the test sample shall not have visible defects such as discoloration, bubbles, cracks,
etc. After the test, the circuit shall be turned on, and the power change rate before and
after the test shall not be greater than 5%.
5.12 Moisture resistance
After the test, the test sample shall not break, and the part beyond 15 mm of the edge
of the test sample shall not have visible defects such as discoloration, bubbles, cracks,
etc. After the test, the circuit shall be turned on, and the power change rate before and
after the test shall not be greater than 5%.
5.13 Salt spray resistance
After the test, the test sample shall not have visible defects such as discoloration,
bubbles, cracks, etc.
5.14 Resistance to cold, hot and wet cycles
After the test, the part beyond 15 mm of the edge of the test sample shall not have any
visible discoloration, bubbling, turbidity, etc.
5.15 Thermal shock resistance
After the test, the part beyond 15 mm of the edge of the test sample shall not have any
visible discoloration, bubbling, turbidity, etc.
5.16 Thermal aging resistance
After the test, the part beyond 15 mm of the edge of the test sample shall not have any
visible discoloration, bubbling, turbidity, etc.
5.17 Low temperature resistance
After the test, the part beyond 15 mm of the edge of the test sample shall not have any
visible discoloration, bubbling, turbidity, etc.
6 Test methods
6.1 Test conditions
Unless otherwise specified, the test shall be carried out under the following conditions:
a) Temperature: 20 °C ± 5 ℃;
b) Relative humidity: 40% ~ 80%.
6.2 Thickness deviation, size deviation, fit, overlap, edge quality, marking quality,
edge stress, pedestrian impact safety
Inspection shall be carried out according to GB/T 44153 or the method agreed upon by
the supplier and the buyer.
6.3 Vision safety performance, strength safety performance and environmental
durability safety performance
Visible light transmittance, secondary image deviation, light distortion, human head
model impact performance, penetration resistance, impact resistance, wear resistance,
heat resistance, radiation resistance and moisture resistance are tested according to the
methods specified in GB 9656.
6.4 Appearance quality
6.4.1 The appearance quality of windscreen laminated glass shall be inspected using the
finished product as the test sample in accordance with the method specified in GB/T
44153.
6.4.2 Taking the finished product as the test sample, place it on the inspection rack under
an ambient illumination of 1 000 lx or above or outdoor natural light, as shown in Figure
1. Face the outer surface of the test sample to the inspector. The inspector is 300 mm
away from the test sample and uses a reading microscope with a graduation value of
0.1 mm to measure the boundary ghosting size; the inspector is 600 mm away from the
test sample and observe...