JC/T 550-2019 PDF in English
JC/T 550-2019 (JC/T550-2019, JCT 550-2019, JCT550-2019)
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Name of Chinese Standard | Status |
| JC/T 550-2019 | English | 290 |
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Adhesives for polyvinyl chloride floor coverings
| Valid |
| JC/T 550-2008 | English | 479 |
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3 days
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Adhesives for polyvinyl chloride floor tiles
| Obsolete |
| JC/T 550-1994 | English | 359 |
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(Semi-rigid PVC plastic flooring adhesives block)
| Obsolete |
Standards related to (historical): JC/T 550-2019
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JC/T 550-2019: PDF in English (JCT 550-2019) JC/T 550-2019
JC
BUILDING MATERIALS INDUSTRY STANDARD
ICS 91.100.50
Q 27
Adhesives for polyvinyl chloride floor coverings
聚氯乙烯塑料地板胶黏剂
ISSUED ON. AUGUST 02, 2019
IMPLEMENTED ON. JANUARY 01, 2020
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 Classification and labeling... 5
4 Requirements... 6
5 Test methods... 7
6 Inspection rules... 20
7 Packaging, marking and storage... 21
Adhesives for polyvinyl chloride floor coverings
1 Scope
This Standard specifies the classification and labeling, requirements, test methods,
inspection rules, as well as packaging, marking and storage of adhesives for polyvinyl
chloride floor coverings (hereinafter referred to as adhesives).
This Standard applies to adhesives for sticking polyvinyl chloride floor coverings in
buildings.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the dated version applies to this document. For
undated references, the latest edition (including all amendments) applies to this
document.
GB/T 1410-2006, Methods of test for volume resistivity and surface resistivity of
solid electrical insulating materials
GB/T 11982.2-2015, Polyvinyl chloride floor coverings - Part 2.Homogeneous
polyvinyl chloride floor covering
GB 18583, Indoor decorating and refurbishing materials - Limit of harmful
substances of adhesives
GB/T 29592-2013, Determination of the emission of volatile organic compounds
and aldehydes of adhesives for building products
JC/T 412.1-2006, Fiber cement flat sheets - Part 1.Non-Asbestos Fiber cement flat
sheets
3 Classification and labeling
3.1 Classification
Adhesives are classified – by their usage characteristics – into.
-- Ordinary adhesives, codenamed P;
-- Anti-static adhesives, codenamed F.
5 Test methods
5.1 State adjustment and standard test conditions
Before testing, the test samples and test equipment shall be placed under standard test
conditions of temperature (23±2) ℃ and relative humidity (50±5)% for at least 24 hours
and the test shall be carried out under these conditions.
5.2 Test materials
5.2.1 Non-asbestos fiber cement flat sheets
Non-asbestos fiber cement flat sheets – with a thickness of 8 mm – in accordance with
the requirements for grade NAF H V in JC/T 412.1-2006 shall be used. The surface of
the cement flat sheets shall be free of dust, particles and stains. Before testing, it shall
be kept in an oven at (80±2) ℃ for 6 hours, and then placed under the standard test
conditions specified in 5.1 for 48 hours before use.
5.2.2 Plastic floor coverings
Homogeneous coiled floor coverings – of grade 33 or above and a total thickness not
less than 2 mm – in accordance with GB/T 11982.2-2015 shall be used. When sampling,
the distance from the edge of the floor covering shall be at least 50 mm. The long side
of the coiled floor covering shall be the longitudinal direction of the floor covering. The
surface of the coiled floor covering shall be clean and dust-free, and the back shall be
smooth. After sampling, place it under the standard test conditions specified in 5.1 for
at least 48 hours before use.
5.3 Test equipment
5.3.1 Coating equipment
5.3.1.1 Coating comb knife for ordinary adhesives
Schematic diagram of the coating comb knife and dimensions for ordinary adhesives
(see Figure 1).
Note.
X – peeling length, in millimeters (mm);
Y – peeling load, in Newton (N);
a – value point.
Figure 8 – Schematic diagram of 90° peeling strength test curve
5.6.3 90° peeling strength after heat treatment
Place the test piece prepared according to 5.6.1 under the standard test conditions
specified in 5.1 for 7 days; then place the test piece in a constant temperature forced air
drying oven at (50±2) ℃ for 20 days; take it out and place it under the standard
conditions specified in 5.1 for 1 day. Then measure the 90° peeling strength according
to 5.6.2.2.
5.6.4 Calculation results
Calculate the 90° peeling strength of a single test piece according to Formula (1).
Where.
σ – 90° peeling strength, in Newton per millimeter (N/mm);
F – 90° average peeling load, in Newton (N);
D – average width of the test piece, in millimeters (mm).
The 90° peeling strength of a single test piece is accurate to 0.01 N/mm. Express the
test results as the arithmetic mean of five test pieces, accurate to 0.1 N/mm.
5.7 Shear strength
5.7.1 Test piece preparation
Prepare five 60 mm × 50 mm bottom sheets, using the longitudinal direction of the non-
asbestos fiber cement flat sheet that meets the requirements of 5.2.1 as the long side.
Place the bottom sheet horizontally with the front side facing upwards; use a 40 mm ×
50 mm adhesive tape to stick it to one end of the bottom sheet. Prepare the test sample
according to the product manual. Use a coating comb knife that meets the requirements
of 5.3.1 to apply the glue once along the long side of the non-asbestos fiber cement flat
sheet at about 60°. Apply the sample evenly on the non-asbestos fiber cement flat sheet.
The effective coating size is 20 mm × 50 mm. Carefully tear off the adhesive tape.
When applying the glue, keep the coating comb knife clean and free of residual glue.
5.8.3.2 Gluing
Prepare the test sample according to the requirements of the product manual. Use a
coating comb knife that meets the requirements of 5.3.1 to apply glue on the front of
the asbestos-free fiber cement flat sheet with a size of 250 mm × 250 mm that meets
the requirements of 5.2.1.The angle between the coating comb knife and the asbestos-
free fiber cement flat sheet is about 60°. The coating direction shall be parallel to one
side of the sheet.
5.8.3.3 Bonding
Bond the back of the plastic floor covering that has passed the requirements of 5.8.3.1
to the glued surface of the non-asbestos fiber cement flat sheet that has been glued in
5.8.3.2 for the time specified by the product manufacturer. The longitudinal direction
of the plastic floor covering test piece shall be perpendicular to the texture of the
adhesive. Gently flatten it with hands; then, use the roller specified in 5.3.2 to roll it
from front to back once under its own weight to ensure that the surface of the test sample
is rolled. Repeat the rolling once perpendicular to the first rolling direction; wipe off
the remaining glue; perform maintenance. If the plastic floor covering still bends after
rolling, a pressure block with a mass of (5.0±0.25) kg shall be placed on the test piece
for (3±0.5) h. The pressure block load shall be evenly distributed on the entire adhesive
layer of the test piece.
5.8.4 Test procedure
5.8.4.1 Accelerated aging test process
Maintain the test pieces prepared according to the requirements of 5.8.3 under the
standard test conditions specified in 5.1 for 7 days; then place the test pieces in a
constant temperature blast drying oven at (50±2) ℃ for 13 days. All test pieces shall be
placed horizontally, and the distance between the test pieces and the inner wall of the
constant temperature blast drying oven shall not be less than 100 mm, so as to ensure
good air circulation. Take out and place under the standard test conditions specified in
5.1 for 24 hours; then place the test pieces in a constant temperature blast drying oven
at (50±2) ℃ for 13 days; take out and place under the standard test conditions specified
in 5.1 for 24 hours; use the elongation measuring instrument specified in 5.8.1 to
measure the distance L of each pair of marked points in the longitudinal and transverse
directions of each plastic floor covering, with an accuracy of 0.01 mm; observe whether
the test pieces have abnormal phenomena such as bulging and degumming.
5.8.5 Result calculation
Calculate the dimensional change rate of a single test piece after accelerated aging
according to Formula (3).
Express the results as the arithmetic mean of three test pieces.
5.10 Limit of harmful substances
Follow the provisions of GB 18583.
5.11 Emission of harmful substances
By GB/T 29592-2013, respectively measure the formaldehyde emission concentration
and total volatile organic compound (TVOC) emission concentration at 3 days and 7
days. The coating amount is (250±10) g/m2.Prepare two test pieces for each test. After
coating, immediately place the test pieces in a climate chamber for testing. Express the
results as the arithmetic mean of the two test pieces.
6 Inspection rules
6.1 Inspection classification
6.1.1 Ex-factory inspection
Ex-factory inspection items include appearance quality and coating properties.
6.1.2 Type inspection
Type inspection items include all the required items in Chapter 4 except the emission
of harmful substances. In any of the following cases, type inspection shall be carried
out.
a) Trial type identification of new products or old products transferred to the factory;
b) After formal production, if there are major changes in the raw materials,
processes, production equipment, etc. of the product, which may affect the
product performance;
c) During normal production, it shall be conducted once a year;
d) When the factory inspection result is significantly different from the previous
type inspection;
e) When the production, which is stopped for more than half a year, is resumed.
6.2 Batching and sampling
6.2.1 Batching
The same type of products produced with the same raw materials, the same formula and
process of 8 tons are considered a batch, and any amount less than 8 tons is also
considered a batch.
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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