QC/T 1170-2022 PDF English
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QC/T 1170-2022: Performance film for automotive glass---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/QCT1170-2022
QC
AUTOMOBILE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.60
CCS T 26
Performance film for automotive glass
ISSUED ON: APRIL 08, 2022
IMPLEMENTED ON: OCTOBER 01, 2022
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 and markings ... 10
5 Requirements ... 10
6 Test method ... 15
7 Inspection rules ... 26
8 Marking, packaging, transportation, storage ... 29
Appendix A (Informative) Selection of performance films for automotive glass ... 30
Appendix B (Normative) Mounting method of performance film sample ... 31
Appendix C (Normative) Determination of formaldehyde emission in performance
films for automotive glass by bag method - Solution absorption - phenol reagent
spectrophotometry ... 33
Appendix D (Normative) Determination of release of benzene series in performance
films for automotive glass by bag method - Solid phase adsorption - Thermal
desorption/gas chromatography-mass spectrometry ... 38
Performance film for automotive glass
1 Scope
This document specifies the terms and definitions, classification and marking,
requirements, test methods, inspection rules, packaging, marking, transportation,
storage, etc. of performance films for automotive glass.
This document is applicable to the performance film, which is mounted on the inner
surface of the motor vehicle window glass and the surface of the interior partition glass.
The performance film mounted on the glass surface of other vehicles can use this
standard as a reference.
2 Normative references
The contents of the following documents constitute the essential provisions of this
document through normative references in the text. Among them, for dated references,
only the version corresponding to the date is applicable to this document; for undated
references, the latest version (including all amendments) is applicable to this document.
GB/T 191 Packaging - Pictorial marking for handling of goods
GB/T 1040.1-2018 Plastics - Determination of tensile properties - Part 1: General
principles (ISO 527-1:2012, IDT)
GB/T 2680-2021 Glass in building - Determination of light transmittance, solar
direct transmittance, total solar energy transmittance, ultraviolet transmittance and
related glazing factors
GB/T 3979 Methods for the measurement of object color
GB/T 5137.1-2020 Test methods of safety glazing materials used on road vehicles -
Part 1: Mechanical properties tests (ISO 3537:2015, MOD)
GB/T 5137.2-2020 Test methods of safety glazing materials used on road vehicles -
Part 2: Optical properties tests (ISO 3538:1997, MOD)
GB/T 11942 Test method of chroma for colour building materials
GB/T 16422.2-2014 Plastics - Methods of exposure to laboratory light sources - Part
2: Xenon-arc sources (ISO 4892-2:2006, IDT)
GB/T 29061 Performance films for glass in building
Using the specimen in 6.4, according to the method specified in 5.13 of GB/T 2680-
2021, measure the spectral transmittance and reflectance of the glass surface as well as
the emissivity of the film surface, at 780 nm ~ 2500 nm. Calculate the total solar
infrared thermal energy transmittance. Calculate the total solar infrared thermal
rejection, according to formula (2), expressed as a percentage. For products with stated
nominal values, calculate the difference between each measured value and the nominal
value; for products without stated nominal values, calculate the difference between each
measured value and the average value. When grading solar infrared rejection, take the
average value of 3 specimens.
Where:
rIR - Total solar infrared thermal rejection;
gIR - Total solar infrared energy transmittance.
6.9 Secondary image deviation
Attach 3 pieces of performance film to the inner surface of the windshield glass of the
automobile, that meets the requirement for the deviation of the secondary image
specified in GB 9656. The mounting method shall be in accordance with the provisions
of GB/T 31848. Place it under the environment as specified in 6.1 for 7 days. It shall be
tested, according to the method specified in Chapter 6 of GB/T 5137.2-2020.
6.10 Optical distortion
Attach 3 pieces of performance film to the inner surface of the windshield glass, that
meets the optical distortion requirements stipulated in GB 9656. The mounting method
shall be in accordance with the provisions of GB/T 31848. Place it under the
environment as specified in 6.1 for 7 days. It shall be tested, according to the method
specified in Chapter 7 of GB/T 5137.2-2020.
6.11 Color consistency
6.11.1 Specimen
Cut a specimen, which has a length of 1000 mm and a width equal to the package width,
at any position within a packaging unit. Take 5 samples of 50 mm x 50 mm, from the
four corners and the middle of the specimen. The outer edge of the specimen is 50 mm
from the edge of the film, as shown in the figure 4.
According to the spectrophotometric colorimetric method specified in GB/T 3979,
measure the spectral transmittance of the specimen, under the red, yellow, green light
sources that meet the chromaticity requirements specified in GB 14887. Use the CIE
1931 standard chromaticity system, to calculate the chromaticity coordinates.
Visually observe the colors of warning signs, prohibition signs, instruction signs, that
comply with the provisions of GB 5768.2-2009, through the specimen.
6.13 Haze
6.13.1 Specimen
Mount three pieces of 100 mm x 100 mm performance film, on the same size of 3 mm
flat glass, which has a visible light transmittance of 89% ± 1%, to make a specimen.
See Appendix B for the mounting method. Place the specimen under the conditions
specified in 6.1 for at least 24 h before the test.
6.13.2 Test device
The haze meter and abrasion meter shall comply with the provisions of GB/T 5137.1-
2020.
6.13.3 Measurement
The initial haze shall be measured according to the method specified in 7.5.3 of GB/T
5137.1-2020. Then the specimen shall be cleaned and ground 100 rotations, according
to the method specified in Chapter 7 of GB/T 5137.1-2020. Measure the haze after
abrasion. Calculate the difference between the haze after abrasion and the initial haze.
6.14 Maximum tensile force at break and elongation at break
6.14.1 Specimen
Take 3 performance films of 200 mmx (25 mm ± 0.5 mm), as shown in Figure 5. It shall
ensure that the edges of the specimen are neat and smooth without gaps. It shall be
placed, at least 24 hours, under the conditions specified in 6.1, before the test.
6.17 Aging resistance
6.17.1 Specimen
According to the method in 6.15.1, respectively attach three 250 mm x (25 ± 0.5) mm
performance films, to a 3 mm flat glass which is 125 mm x 50 mm AND has a visible
light transmittance of 89% ± 1%, to make specimen. It shall be placed under the
conditions specified in 6.1, for at least 7 days before the test.
6.17.2 Test device
The aging test chamber includes an irradiation system, a temperature control system,
and a blackboard temperature measuring device. The light source of the irradiation
system shall meet the requirements of GB/T 16422.2-2014, being equipped with the arc
lamp with daylight filter or equivalent light source. The irradiance of the specimen
surface is 1000 W/m2 ± 75 W/m2 in a wider passband (300 nm ~ 800 nm), or 110 W/m2
± 5 W/m2 in a wide passband (300 nm ~ 400 nm), or 0.93 W/m2 ± 0.02 W/m2 in a narrow
passband 340nm. The temperature of the blackboard inside the chamber is 63 °C ± 3 °C.
6.17.3 Measurement
Measure the visible light transmittance and ultraviolet transmittance of the specimen,
according to 6.4 and 6.6, respectively. Measure the solar infrared direct transmittance
of the specimen, according to the method specified in 5.13 of GB/T 2680-2021. Then
put the specimen glass face up into the aging chamber. Take it out after continuous
irradiation for 600 h. After standing for 24 hours under the conditions specified in 6.1,
make observation. Then measure the visible light transmittance and ultraviolet
transmittance of the specimen, according to 6.4 and 6.6. Measure the solar infrared
direct transmittance of the specimen, according to the method specified in 5.13 of GB/T
268 0-2021. Respectively calculate the visible light transmittance, ultraviolet
transmittance, solar infrared direct transmittance difference. Measure the bonding force,
according to 6.15.3.
6.18 Combustion resistance
6.18.1 Specimen
Attach three pieces of 300 mm x 76 mm performance film on a 3 mm flat glass, which
is the same size, to make a specimen. See Appendix B for the attachment method. Place
at least 7 days, under the conditions specified in 6.1, before the test.
6.18.2 Test device
The test device shall comply with the provisions of GB 8410.
6.18.3 Measurement
7.3.2 Exit-factory inspection
7.3.2.1 Appearance quality, size deviation, visible light transmittance
If the above-mentioned items meet the requirements of acceptance number in the exit-
factory inspection sampling plan, which is formulated by the enterprise, the item is
considered qualified.
7.3.2.2 Other inspection items to be determined through negotiation by supplier
and purchaser
If all specimens required by each inspection item meet the requirements, the item is
considered qualified.
7.3.2.3 Comprehensive judgment
If all the items required in 7.3.2.1 and 7.3.2.2 are qualified, the exit-factory inspection
of this batch of products is considered to be qualified. If there is one unqualified item,
this batch of products fail the exit-factory inspection.
8 Marking, packaging, transportation, storage
8.1 Marking
Packaging marks shall comply with the provisions of GB/T 191. It shall include product
name, mark, factory name, factory address, trademark, specification, quantity, batch
number, production date, implemented standards. It shall be marked with words such
as "handle with care, avoid rain, avoid moisture".
8.2 Packaging
The product is packaged in sealed moisture-proof packaging. The packaging materials
shall comply with relevant national standards.
8.3 Transportation
Product transportation shall comply with relevant national regulations.
Rainproof and sunscreen measures shall be taken during transportation.
8.4 Storage
The product is stored in a well-ventilated, rain-proof, moisture-proof, fire-proof place.
Appendix B
(Normative)
Mounting method of performance film sample
B.1 Mounting conditions
Except for specific requirements, mounting shall be carried out in a clean, dust-free,
airtight room, at a temperature of 15 °C ± 25 °C and a relative humidity of 50% ~ 75%.
B.2 Mounting tools
Cleaning installation fluid, watering can, cleaning scraper, wiper, water squeezing
shovel, Teflon water squeezing sheet, film cutting knife, film cutting guide and ruler,
lint-free absorbent paper towels, etc.
B.3 Mounting
B.3.1 Glass cleaning
Clean the glass. Remove the stains on the glass surface. Use a cleaning scraper to scrape
off the dirt, if necessary. Use a lint-free absorbent paper towel, to wipe the glass, to
ensure it is clean.
B.3.2 Mounting
B.3.2.1 Lamination
Remove the protective film from the cut performance film. Spray cleaning installation
liquid evenly on the installation rubber surface and glass surface. Cover the film. Spray
the cleaning installation liquid on the surface of the performance film. Use a wiper, to
scrape back and forth on the performance film, in the horizontal direction for 2 ~ 3
times, to make the performance film stick to the correct position.
B.3.2.2 Water squeezing
Spray the cleaning installation liquid on the surface of the performance film again. First,
move a squeeze shovel, starting from the top of the performance film, in the up, down,
left, right direction. Squeeze the whole piece of glass, at the same pressure, angle,
overlapping movements, to remove the cleaning installation fluid remaining between
gap between the performance film and the glass. Before the final extrusion, use a film
cutter to cut off the possible excess of the edge of the performance film. Then use a lint-
free paper towel, to wrap the Teflon water squeeze sheet, to squeeze out the residual
water using a steady force. At the same time, keep changing the position of the paper
Appendix C
(Normative)
Determination of formaldehyde emission in performance films for automotive
glass by bag method - Solution absorption - phenol reagent spectrophotometry
C.1 Measuring range
This method is suitable for the determination of formaldehyde emission in performance
films for automotive glass.
The detection limit of this method is 0.027 μg; the lower limit of determination is 0.108
μg. When the specimen area is 0.18 m2, the inflated volume of the sampling bag is 5.0
L, the sampling volume of the absorption liquid is 1.0 L, THEN, the minimum detection
concentration of the method is 0.001 mg/m2, the minimum quantitative concentration
is 0.003 mg/m2.
C.2 Method principle
Use the bag method, to put the performance film for automotive glass into the sampling
bag. Heat it at 60 °C, to make free formaldehyde dissipate in the sampling bag. Use a
large bubble absorption tube filled with phenol reagent, to collect gas samples.
Formaldehyde reacts with phenol reagent, to produce azine. In acidic solution, azine is
oxidized by iron ions to a blue compound, which is quantified by measuring the
absorbance, at a wavelength of 630 nm by a spectrophotometer.
C.3 Reagents and materials
Unless otherwise stated, analytically pure chemical reagents in compliance with
national standards are used for analysis; the distilled water is used for experiments.
C.3.1 Phenol reagent (3-methyl-2-benzothiazole hydrazone hydrochloride) solution, 1
g/L: Put it in a brown bottle. Store it in the refrigerator. This liquid is colorless and
transparent. It gradually becomes red after standing and becomes darker. It can be stored
for about 3 months (it is light red). If it is stored for a long time, small brownish red
precipitates will appear, which can still be used after filtration; however, the background
value of absorbance will increase.
C.3.2 Absorption solution: Use water to dilute 5 mL of phenol reagent solution (C.3.1),
to make it to 100 mL. Prepare it before use.
C.3.3 Ferric sulfate solution, 10 g/L: Weigh 1 g of ferric ammonium sulfate
[NH4Fe(SO4)2·12H2O, superior grade]. Dissolve it in 0.1 mol/L hydrochloric acid
solution. Dilute to l00 mL. Store it in a brown bottle. It can be stored for 6 months in
D.3.2 Internal standard solution: ρ = 2000 μg/mL or 2500 μg/mL, commercially
available certified internal standard solution (special for analysis of volatile organic
compounds).
D.3.3 4-Bromofluorobenzene (BFB): ρ = 50 μg/ mL.
For GC-MS performance test. Take an appropriate amount of chromatographically pure
4-bromofluorobenzene (BFB), to prepare it in a certain volume of methanol (D.3.1).
D.3.4 Standard stock solution: ρ = 1000 μg/mL.
Purchase a chromatographically pure target compound. Take a certain volume. Use
methanol (D.3.1), to dilute it, to configure it as a standard stock solution of 1000 μg/mL.
Commercially available certified mixed standard solutions are also available.
D.3.5 Nitrogen: Purity ≥ 99.999%.
Oxygen and organic filters shall be installed in the carrier gas path. These filters shall
be replaced periodically, according to the manufacturer's instructions.
D.3.6 High-purity nitrogen: Purity ≥ 99.999%.
D.3.7 Sampling bag: Made of polyvinyl fluoride (PVF), which has a capacity of 10 L,
equipped with a gas inlet/outlet valve, sealed with PE strips.
D.3.8 Adsorption tube: Made of stainless steel, which has an inner diameter of 5 mm.
Combination 1 adsorption tube: Tenax GR and Carbopack B are installed inside, the
lengths of which are 30 mm and 25 mm, respectively.
Combination 2 adsorption tubes: Carbopack B and Carboxen 1000 are installed inside,
the lengths of which are 30 mm and 10 mm, respectively.
Combination 3 adsorption tubes: Carbopack C, Carbopack B, Carboxen 1000 are
installed inside, the lengths of which are 13 mm, 25 mm, 13 mm, respectively. OR use
another product with the same functionality.
D.3.9 Adsorbent: Tenax GR (specific surface area 35 m2/g), Carbopack B (specific
surface area 100 m2/g), Carbopack C (specific surface area 10 m2/g), Carboxen 1000
(specific surface area 1200 m2/g), or other equivalent adsorbents such as domestic
GDX-502 (specific surface area 170 m2/g), GDX-201 (specific surface area 510 m2/g),
GDX-101 (specific surface area 330 m2/g), etc. The particle size of commonly used
adsorbents is generally 60 mesh ~ 80 mesh.
D.4 Instruments and equipment
D.4.1 Constant temperature test chamber: The temperature control accuracy is ±2 °C.
D.4.2 Gas chromatograph: It has capillary column split/splitless inlet, capable of
electronic pressure control of carrier gas, with programmable temperature rise.
D.4.3 Mass spectrometer: Electron impact (EI) ionization source, which is capable of
scanning from 35 a mu to 270 amu, within 1 second. It has NIST mass spectrum library,
manual/automatic tuning, data acquisition, quantitative analysis, spectral library search
and other functions.
D.4.4 Chromatographic column: 100% methyl polysiloxane capillary column (column-
1) or equivalent, which has an inner diameter of 0.18 mm, 0.25 mm, 0.32 mm, a film
thickness of 1.0 μm, a length of 20 m ~ 60 m, can be selected according to needs.
D.4.5 Thermal desorption device: It can perform secondary thermal desorption on the
adsorption sampling tube. Bring the carrier gas for desorption gas, into the gas
chromatograph. The desorption temperature, desorption time, flow rate can be adjusted;
the cold trap can realize quick temperature rise. Cold traps generally use semiconductor
refrigeration. The part connected to the gas chromatograph of the thermal desorption
device and the gas pipeline in the instrument shall use silanized stainless steel tubes,
which can be heated uniformly, at least between 50 °C and 150 °C.
D.4.6 Adsorption tube aging device: The maximum temperature shall reach above
400 °C; the maximum carrier gas flow rate can reach at least 100 mL/min; the flow rate
can be adjusted.
D.4.7 Oil-free sampling pump: The sampling flow rate shall be able to reach 20 mL/min
~ 500 mL/min. The sampling pump should adopt a sampling pump, which has a
constant mass flow control; the flow accuracy shall not be lower than 2.5%.
D.4.8 Calibration of the flow meter: It can accurately measure the flow rate, within 5
mL/min ~ 500 mL/min; the flow rate accuracy shall not be lower than 2%; an electronic
mass flow meter should be used.
D.4.9 Micro-syringes: 1.0 μL, 5.0 μL, 10.0 μL, 25.0 μL, 50.0 μL, 100 μL.
D.4.10 Vacuum pump: At least able to reach a negative pressure of 1.0 Pa x 105 Pa.
D.4.11 Automatic inflation device for sampling bags: The inflation flow rate is 0.1
L/min ~ 50 L/min; the accuracy shall not be lower than 2.5%.
D.5 Sample collection
D.5.1 Bag method - Absorption tube sampling
D5.1.1 Sampling bag preparation: Set the temperature of the constant temperature test
chamber to 90 °C. Heat the empty chamber for 0.5 h ~ 1 h. Stretch the sampling bag.
Put it into the test chamber and heat it for more than 12 h. Test the background result of
the sampling bag, before each use. When the blank value of the sampling bag is lower
Install the aged adsorption tube, on the thermal desorption standard sample loading
platform (note that the inlet end of the adsorption tube faces the syringe). Use a micro-
syringe, to take 1.0 μL of the prepared mixed standard solution. Inject it into the blank
adsorption tube. At the same time, add 1.0 μL of 50 μg/mL internal standard use solution
(diluted with D.3.2). Use 50 mL/min N2, to purge the adsorption tube for 2 min. Quickly
remove the adsorption tube. Use sealing caps, to seal the two ends of the adsorption
tube, to obtain standard series of adsorption tubes, which have a content of 5.0 ng, 10.0
ng, 20.0 ng, 50.0 ng, 100 ng, respectively. The internal standard content of each
adsorption tube is 50 ng.
D.6.2.2 Drawing of standard curve
Put the adsorption tubes of the standard curve series into the thermal desorption
instrument. Perform analysis and determination, from low concentration to high
concentration in sequence, according to the instrument reference conditions (D.6.1).
According to the mass ratio of target/internal standard and the characteristic mass ion
peak area (or peak height) ratio of target/internal standard, use the least square method
or the relative response factor, to draw the standard curve.
D.6.3 Sample analysis
Referring to the standard sample loading step, add 50 ng of internal standard substance
to the adsorption tube of the collected sample. Perform TD-GCMS analysis on the
sample, according to the instrument reference conditions (D.6.1).
D.6.3.1 Qualitative analysis
Qualitative by retention time and mass spectrum comparison.
D.6.3.2 Quantitative analysis
According to the external standard method, the internal standard curve method or the
mean value of the average relative response factor of each point of the curve (the
relative standard deviation of the relative response factor ≤ 30%, the relative response
factor ≥ 0.010), calculate the content of the target component.
D.6.4 Blank test
Follow the same procedure as the sample analysis, to analyze the blank sample.
D.7 Calculation and presentation of results
D.7.1 Calculation of release amount
The release amount of benzene series in the performance film for automotive glass is
calculated, according to formula (D.1):
...... Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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