JC/T 1074-2021 PDF English
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Purificatory performance of coatings with air purification
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Purificatory performance of coating with air purification
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JC/T 1074-2021: PDF in English (JCT 1074-2021) JC/T 1074-2021
JC
BUILDING MATERIAL INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 91.100
CCS Q 10
Replacing JC/T 1074-2008
Purificatory Performance of Coatings with Air Purification
室内空气净化功能涂覆材料净化性能
ISSUED ON: DECEMBER 02, 2021
IMPLEMENTED ON: APRIL 01, 2022
Issued by: Ministry of Industry and Information Technology of the People’s
Republic of China
Table of Contents
Foreword ... 3
1 Scope ... 6
2 Normative References ... 6
3 Terms and Definitions ... 6
4 Classification and Marking ... 7
4.1 Classification ... 7
4.2 Marking ... 7
5 Requirements ... 7
6 Test Methods ... 8
6.1 Test environmental conditions ... 8
6.2 Test instruments and reagents ... 8
6.3 Gas collection and analysis ... 9
6.4 Sampling ... 9
6.5 Test substrate ... 9
6.6 Preparation of test sample plate ... 9
6.7 Purificatory efficiency ... 10
6.8 Purification durability ... 10
7 Calculation of Results ... 10
8 Test Report ... 10
9 Inspection Rules ... 11
9.1 Inspection requirements ... 11
9.2 Batching and sampling ... 11
9.3 Judgment ... 11
Appendix A (Normative) Test Cabin System ... 12
Appendix B (Normative) Test Method for Purificatory Performance of Non-
Photocatalytic Air Purification Coatings ... 16
Appendix C (Normative) Test Method for Purificatory Performance of Photocatalytic
Air Purification Coatings ... 18
Purificatory Performance of Coatings with Air Purification
1 Scope
This Document specifies the classification and marking, requirements, test methods, result
calculations, test reports and inspection rules of indoor air purification coatings.
This Document applies to indoor air purification coatings.
2 Normative References
The provisions in following documents become the essential provisions of this Document
through reference in 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 3186 Paints Varnishes and Raw Materials for Paints and Varnishes - Sampling
GB/T 9271 Paints and Varnishes Standard Panels for Testing
GB/T 16129 Standard Method for Hygienic Examination of Formaldehyde In Air of
Residential Areas - Spectrophotometric Method
GB/T 18883 Indoor Air Quality Standard
3 Terms and Definitions
For the purposes of this Document, the following terms and definitions apply.
3.1 Air purification
The behavior of reducing the target pollutants in indoor air that affect human health and making
the air clean.
3.2 Air purification coating
The coating that can reduce or remove one or more targeted pollutants from indoor air.
3.3 Purificatory efficiency
Under the specified test conditions, the ability of the coating to reduce the concentration of
formaldehyde (or toluene) in the cabin.
3.4 Purification durability
Under the specified test conditions, after the indoor air purification coating is applied several
times with the specified concentration of formaldehyde (or toluene) within the specified period
(or time), the ability of the material’s continuous purification against the target pollutant.
4 Classification and Marking
4.1 Classification
4.1.1 Products are divided into interior decoration (Class I) and treatment (Class II) according
to their uses; Class I is further divided into water-based liquid coatings (IS) and powder
inorganic coatings (IF)according to the coating form.
4.1.2 According to the principle of purification, the products are divided into coatings with non-
photocatalytic air purification function (Class W) and coatings with photocatalytic air
purification function (Class G).
4.2 Marking
Products shall be marked in order of product name, document number, coating category, and
purification principle.
EXAMPLE: water-based liquid coatings of interior decoration with non-photocatalytic air purification
function shall be marked as follows:
JC/T 1074-2021-IS-W
5 Requirements
The indoor air purification coatings should meet the requirements in Table 1 for the purificatory
performance against certain target pollutants.
6.2.3 Micro-syringe: Volume range 5μL, division value 0.1μL.
6.2.4 Pollution source reagents: 37%~40% formaldehyde solution (analytical pure); toluene
(analytical pure).
6.3 Gas collection and analysis
6.3.1 The collection and concentration analysis of formaldehyde gas shall be carried out in
accordance with the methods specified in GB/T 16129.
6.3.2 The collection and concentration analysis of toluene gas shall be carried out according to
the method specified in GB/T 18883.
6.4 Sampling
The product shall be sampled according to the method stipulated in GB/T 3186, and the
sampling volume shall be determined according to the test requirements.
6.5 Test substrate
Use a glass plate with a size of 500 mm × 500 mm, and its surface treatment shall be carried
out in accordance with the method specified in GB/T 9271.
6.6 Preparation of test sample plate
6.6.1 For Class IS materials, after stirring the product evenly, according to the coating amount
provided by the manufacturer, evenly and fully coat the sample on one side of the four glass
plates; and carry out the test after natural drying for 7 days in the laboratory environment in
6.1.1. If the manufacturer does not provide the coating amount, the total coating amount of
Class IS materials should be (250 ± 2) g/m2.
6.6.2 For Class IF materials, prepare samples according to the requirements of the product
instructions. If the tested product specifies the range of powder to water ratio, the middle value
shall be taken. According to the coating amount provided by the manufacturer, evenly and fully
coat the sample on one side of the four glass plates, and conduct the test after 7 days of natural
drying in the laboratory environment in 6.1.1. If the manufacturer does not provide the coating
amount, the total coating amount (dry powder material) of Class IF materials should be (1.6±0.1)
kg/m2.
6.6.3 For Class II materials, after stirring the product evenly, spray the sample evenly on one
side of the four glass plates according to the spraying amount provided by the manufacturer,
and conduct the test after drying it naturally for 24 hours in the laboratory environment in 6.1.1.
If the manufacturer does not provide the spraying amount, the spraying amount of Class II
materials should be (60 ± 2) g/m2.
6.7 Purificatory efficiency
6.7.1 See Appendix B for the test method of purificatory efficiency of coatings with non-
photocatalytic air purification.
6.7.2 See Appendix C for the test method of the purificatory efficiency of coatings with
photocatalytic air purification.
6.8 Purification durability
6.8.1 See Appendix B for the test method of purification durability of coatings with non-
photocatalytic air purification.
6.8.2 See Appendix C for the test method of purification durability of coatings with
photocatalytic air purification.
7 Calculation of Results
7.1.1 See Appendix B for the calculation of the purificatory efficiency and purification
durability of coatings with non-photocatalytic air purification.
7.1.2 See Appendix C for the calculation of the purificatory efficiency and purification
durability of coatings with photocatalytic air purification.
8 Test Report
The test report shall include the following:
a) The name, type, proportion, coating amount, manufacturer or sample sending
organization, and test date of the sample;
b) Test conditions, including lab and test cabin temperature, relative humidity and other
sampling environmental conditions;
c) For samples of coatings with non-photocatalytic air purification, indicating the target
pollutant type, purificatory efficiency, purification durability and test cycle times;
d) For samples of coatings with photocatalytic air purification, indicating the type of light
source, type of target pollutant, purificatory efficiency, purification durability and test
cycle times;
e) Any circumstances that may affect the results.
Appendix B
(Normative)
Test Method for Purificatory Performance of Non-Photocatalytic Air
Purification Coatings
B.1 Overview
This appendix specifies the test methods for evaluating the performance of non-photocatalytic
air purification coatings to remove the gaseous target pollutants (formaldehyde or toluene),
including purificatory efficiency and purification durability.
B.2 Preparation of test
Select two test cabins under the test environment conditions specified in 6.1, and seal the test
cabins. Test the concentration of target pollutants (formaldehyde or toluene) in the air in the test
cabins respectively. If the concentration of target pollutants (formaldehyde or toluene) in each
cabin is less than or equal to 0.02mg/m3, the test can continue. If the concentration of target
pollutant (formaldehyde or toluene) is greater than 0.02mg/m3, effective cleaning measures
shall be taken until the requirements are met before continuing the test.
B.3 Purificatory efficiency
B.3.1 Prepare two test cabins, one for sample cabin, the other for comparison cabin; put the 4
prepared test sample plates and 4 blank glass plates into the sample holders in the sample cabin
and comparison cabin, respectively; place one side of the plate coated with sample towards the
center of the cabin.
B.3.2 After connecting the gas generator to the test cabin and confirming, seal the test cabin;
turn on the stirring fan, and set the speed to (15±1) r/s.
B.3.3 Use a 5μL micro-syringe to pipette (3±0.1) μL of pollutants into the gas generator; turn
on the gas generator and start timing; turn off the gas generator and stirring fan till 2h; and
collect and analyze the target pollutant concentration (n2h) in the comparison cabin at the same
time. After the collection is completed, continue to turn on the stirring fan for 24h; collect the
gas in each cabin and test the target pollutant concentration; turn off the fan when collecting
the gas; and obtain the final concentration of the target pollutant in the comparison cabin (n24h)
and the final concentration of the target pollutant in the sample cabin (n1).
B.4 Purification durability
B.4.1 If the purificatory efficiency test result is unqualified, a retest can be carried out. If the
retest is qualified, the purification durability test can be continued. If the retest is unqualified,
Appendix C
(Normative)
Test Method for Purificatory Performance of Photocatalytic Air
Purification Coatings
C.1 Overview
This appendix specifies the test methods for evaluating the performance of photocatalytic air
purification coatings to remove gaseous target pollutants (formaldehyde or toluene), including
purificatory efficiency and purification durability.
C.2 Preparation of test
Select three test cabins under the test environment conditions specified in 6.1, and seal the test
cabins. Test the concentration of target pollutants (formaldehyde or toluene) in the air in the test
cabins respectively. If the concentration of target pollutants (formaldehyde or toluene) in each
cabin is less than or equal to 0.02 mg/m3, the test can continue. If the concentration of target
pollutant (formaldehyde or toluene) is greater than 0.02mg/m3, effective cleaning measures
shall be taken until the requirements are met before continuing the test.
C.3 Purificatory efficiency
C.3.1 Number the prepared three test cabins respectively as No.1 sample cabin, No.2 sample
cabin and comparison cabin. Put the prepared two sets of test sample plates (each with an area
of 1m2) into the sample holders in the No.1 sample cabin and the No. 2 sample cabin; place the
side of the sample plate coated with the sample facing the center of the cabin; and seal the two
sample cabins. Put four blank glass plates into the sample holder in the comparison cabin; and
seal the comparison cabin.
C.3.2 After connecting the gas generator to the test cabin and confirming, seal each test cabin;
turn on the stirring fan, and set the speed to (15±1) r/s.
C.3.3 Turn on the light source (UV lamp or LED lamp) in the No. 1 sample cabin; and keep the
No. 2 sample cabin and the comparison cabin without light.
C.3.4 Use a 5μL micro-syringe to pipette (3±0.1) μL pollution source; inject it into the gas
generator; turn on the gas generator and start timing; turn off the gas generator and stirring fan
after 2h; and collect and analyze the concentration of target pollutants (n2h) in the comparison
cabin at the same time. After the collection is completed, continue to turn on the stirring fan for
24h; collect the gas in each cabin and test its concentration; turn off the fan when collecting the
gas; and then obtain the final concentration of the target pollutant in the comparison cabin (n24h)
and the final concentration of the target pollutant in the No. 1 sample cabin (ny1) and the final
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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