GB/T 13477.9-2017 PDF English (GB/T 13477.9-2002: Older version)
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Test method for building sealants -- Part 9: Determination of adhesion/cohesion properties after immersion in water
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| GB/T 13477.9-2002 | English | 359 |
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Test method for building sealants -- Part 9: Determination of adhesion/cohesion properties after immersion in water
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GB/T 13477.9-2017: PDF in English (GBT 13477.9-2017) GB/T 13477.9-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 91.100.50
Q 24
Replacing GB/T 13477.9-2002
Test Method for Building Sealants - Part 9: Determination of
Adhesion / Cohesion Properties after Immersion in Water
(ISO 10591:2005, Building construction - Sealants - Determination of adhesion /
cohesion properties of sealants after immersion in water, MOD)
ISSUED ON: MAY 31, 2017
IMPLEMENTED ON: APRIL 1, 2018
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of the People’s Republic of China;
Standardization Administration 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 Principle ... 6
5 Standard Test Conditions ... 6
6 Test Apparatuses ... 7
7 Preparation of Test Piece ... 7
8 Treatment of Test Pieces ... 9
9 Test Procedures ... 10
10 Calculation of Test Results ... 10
11 Test Report ... 11
Appendix A (informative) Structural Changes of this Part Compared with ISO
10591:2005 ... 12
Appendix B (informative) The Technical Differences between this Part and ISO
10591:2005 and Reasons of these Differences ... 13
Foreword
GB/T 13477 Test Method for Building Sealants is divided into 20 parts:
---Part 1: Specifications for Test Substrates;
---Part 2: Determination of Density;
---Part 3: Determination of Extrudability of Sealants Using Standardized Apparatus;
---Part 4: Determination of Extrudability of One-component Sealants;
---Part 5: Determination for Tack-free Time;
---Part 6: Determination of Flow;
---Part 7: Determination of Low-temperature Flexibility;
---Part 8: Determination of Tensile Properties;
---Part 9: Determination of Adhesion / Cohesion Properties after Immersion in Water;
---Part 10: Determination of Tensile Properties at Maintained Extension;
---Part 11: Determination of Tensile Properties at Maintained Extension after Immersion
in Water;
---Part 12: Determination of Adhesion / Cohesion Properties at Constant Temperature;
---Part 13: Determination of Adhesion / Cohesion Properties at Variable Temperatures;
---Part 14: Determination of Resistance to Prolonged Exposure to Water;
---Part 15: Determination of Adhesion / Cohesion Properties after Exposure to Heat and
Artificial Light through Glass and to Water;
---Part 16: Determination of Resistance to Compression;
---Part 17: Determination of Elastic Recovery;
---Part 18: Determination of Adhesion-in-peel;
---Part 19: Determination of Change in Mass and Volume;
---Part 20: Determination of Staining.
This is Part 9 of GB/T 13477.
This Part was drafted in accordance with the rules provided in GB/T 1.1-2009.
Test Method for Building Sealants - Part 9: Determination of
Adhesion / Cohesion Properties after Immersion in Water
1 Scope
This Part of GB/T 13477 specifies the method for the determination of adhesion / cohesion
properties of building sealants after immersion in water.
This Part is applicable to the determination of the influence of water immersion on the
elongation at break and the adhesion with substrates of plastic sealants. It can also be used to
determine the influence of water immersion on the adhesion / cohesion properties of elastic
sealants.
2 Normative References
The following documents are indispensable to the application of this document. In terms of
references with a specified date, only versions with a specified date are applicable to this
document. In terms of references without a specified date, the latest version (including all the
modifications) is applicable to this document.
GB/T 13477.1 Test Method for Building Sealants - Part 1: Specifications for Test Substrates
(GB/T 13477.1-2002, ISO 13640:1999, MOD)
GB/T 14682 Building Sealing Material Vocabulary (GB/T 14682-2006, ISO 6927:1981, NEQ)
3 Terms and Definitions
The terms and definitions defined in GB/T 14682 are applicable to this document.
4 Principle
Adhere the sealant specimen between the surfaces of two parallel substrates to prepare a test
piece. Immerse the test piece in water under specified conditions, then stretch the test piece to
failure, report the elongation at break of the test piece, and record the form of failure of the
sealant’s adhesion or cohesion.
5 Standard Test Conditions
The standard test conditions of the laboratory are: temperature (23 2) C and relative humidity
(50 5)%.
6 Test Apparatuses
6.1 Adhesion substrate: cement mortar board, glass plate or aluminum plate that complies with
the stipulations of GB/T 13477.1; used to prepare test pieces. The shapes and dimensions of the
substrate are shown in Figure 1 and Figure 2. For each test piece, two substrates of the same
material shall be used. Alternatively, substrates of other materials and dimensions can also be
selected as agreed upon by all parties, but the adhesion size and area of the embedded sealant
specimen shall be the same as shown in Figure 1 and Figure 2.
6.2 Isolation pad: the surface shall be anti-adhesive; used to prepare test pieces with a sealant
cross-section of 12 mm 12 mm (as shown in Figure 1 and Figure 2).
6.3 Anti-adhesive material: anti-adhesive film or anti-adhesive paper, for example,
polyethylene (PE) film, which should be selected in accordance with the recommendations of
the sealant manufacturer. It is used to prepare test pieces.
6.4 Tensile testing machine: equipped with a recording device; capable of stretching test pieces
at a speed of (5.5 0.7) mm/min.
6.5 Air blast drying oven: the temperature can be adjusted to (70 2) C; used to handle test
pieces in accordance with Method B (see 8.3).
6.6 Container A: used to hold distilled water at (23 2) C and soak test pieces in accordance
with Method B (see 8.3).
6.7 Container B: used to hold water at (23 2) C and soak test pieces.
7 Preparation of Test Piece
Use a degreasing gauze to remove floating dust from the surface of the cement mortar board.
Use solvents, for example, acetone, to clean the aluminum plate and glass plate, then dry them.
In accordance with the sealant manufacturer’s instructions (for example, whether to use primer
and the mixing procedures for multi-component sealants), prepare the test pieces.
Maintain the sealant and substrate at (23 2) C. For each type of substrate and each test
temperature, prepare 3 test pieces.
As shown in Figure 1 and Figure 2, assemble two pieces of adhesion substrate and two pieces
of isolation pad on the anti-adhesive material to form a cavity. Then, embed the sealant
specimen in the cavity to prepare a test piece. When embedding specimens, the following
matters shall be noted:
a) Avoid the formation of air bubbles;
b) Squeeze the specimen onto the adhesion surface of the substrate to ensure a tight
8.3 Method B
Firstly, treat the test pieces in accordance with Method A. Then, treat the test pieces in
accordance with the following procedures for 3 cycles:
a) Store in a drying oven at (70 2) C for 3 days;
b) Store in distilled water at (23 2) C for 1 day;
c) Store in a drying oven at (70 2) C for 2 days;
d) Store in distilled water at (23 2) C for 1 day.
The above procedures can also be changed to c) d) a) b).
The test pieces treated by Method B shall be placed under the standard test conditions for at
least 24 hours before testing.
NOTE: Method B is a routine treatment procedure that utilizes heat and water to affect the curing
speed of the test pieces, and it is not suitable to provide durability information of the sealant.
9 Test Procedures
After performing the treatment in accordance with Method A or Method B, remove the pad.
Immerse the test piece in water (6.7) at (23 2) C for 4 days, then, place it under the standard
test conditions for 1 day. Put the test piece into the testing machine (6.4), at a speed of (5.5
0.7) mm/min, stretch it to failure. Record the force value - elongation value curve and the failure
mode of the test piece.
10 Calculation of Test Results
The elongation at break E is calculated in accordance with Formula (1) and expressed as a
percentage. Take the arithmetic mean of 3 test pieces, accurate to 5%.
Where,
E---the elongation at break, expressed in (%);
W0---the initial width of the test piece, expressed in (mm);
W1---the width of the test piece at the time of failure, expressed in (mm).
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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