GB/T 13477.13-2019 English PDF (GBT13477.13-2019)

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GB/T 13477.13-2019: Test Method for Building Sealants -- Part 13: Determination of Adhesion/cohesion Properties at Variable Temperatures
GB/T 13477.13-2019
(Test methods for building sealing materials - Part 13. Determination of cohesive properties after cold-column)
ICS 91.100.50
Q24
National Standards of People's Republic of China
Replace GB/T 13477.13-2002
Building sealing material test method
Part 13. Determination of cohesiveness after cold drawing - hot pressing
Testmethodforbuildingsealants-Part 13.Determinationof
(ISO 9047.2001, Buildingconstruction-Jointingproducts-
Atvariabletemperatures, MOD)
2019-06-04 released 2020-05-01 implementation
State market supervision and administration
China National Standardization Administration issued
Foreword
GB/T 13477 "Test Methods for Building Sealing Materials" is divided into the following sections.
---Part 1. Specification for test substrates;
--- Part 2. Determination of density;
--- Part 3. Method for determining the extrudability of sealing materials using standard instruments;
--- Part 4. Determination of extrudability of single-component sealing materials in original packaging;
--- Part 5. Determination of dry time;
--- Part 6. Determination of fluidity;
--- Part 7. Determination of low temperature flexibility;
---Part 8. Determination of tensile cohesiveness;
---Part 9. Determination of tensile cohesiveness after immersion;
--- Part 10. Determination of the adhesion and adhesion;
--- Part 11. Determination of the adhesion and adhesion after immersion;
---Part 12. Determination of cohesiveness after stretching-compression cycle at the same temperature;
--- Part 13. Determination of cohesiveness after cold drawing - hot pressing;
---Part 14. Determination of cohesiveness after immersion and stretching-compression cycles;
--- Part 15. Determination of cohesiveness after exposure to heat, glass-through artificial light source and water;
---Part 16. Determination of compression characteristics;
--- Part 17. Determination of elastic recovery rate;
---Part 18. Determination of peel adhesion;
--- Part 19. Determination of mass and volume changes;
--- Part 20. Determination of pollution.
This part is the 13th part of GB/T 13477.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB/T 13477.13-2002 "Test methods for building sealing materials - Part 13. Determination of cohesiveness after cold-drawing - hot pressing
Ding, compared with GB/T 13477.13-2002, except for editorial changes, the main technical changes are as follows.
--- Revised scope (see Chapter 1, Chapter 1 of the.2002 edition);
---In the test equipment and materials, modified test machine, gage, bonded substrate and spacer block, increased tensile positioning block and compression
Positioning blocks (see Chapter 6, Chapter 6 of the.2002 edition);
--- In the preparation of the test piece, the pretreatment conditions and time of the sample to be tested and the substrate were modified (see Chapter 7, Chapter 7 of the.2002 edition);
--- In the processing of the test piece, the "Note" and the placement time of the sample after processing were modified, and the "A method was selected according to the agreement of the parties.
Or B method" (see Chapter 8, Chapter 8 of the.2002 edition);
--- Revised the test procedure (see Chapter 9, Chapter 9 of the.2002 edition);
--- Revised the test report (see Chapter 10, Chapter 10 of the.2002 edition).
This section uses the redrafting method to modify the use of ISO 9047.2001 "Building Structure Joint Products Sealant at Different Temperatures
Determination of knot/cohesive properties.
This section has more structural adjustments than ISO 9047.2001. This section is listed in Appendix A with ISO 9047.2001.
The chapter number is compared to the list.
There are technical differences in this section compared to ISO 9047.2001, and the terms involved in these differences have been passed through the margins on their outer sides.
The vertical single line (-) is marked, and a list of the corresponding technical differences and their causes is given in Appendix B.
Compared with ISO 9047.2001, this section also made the following editorial changes.
--- Revised the standard name, changed the "sealing adhesive/cohesive properties at different temperatures" to "cold pull - cohesive after hot pressing
Determination".
This part was proposed by the China Building Materials Federation.
This part is under the jurisdiction of the National Technical Committee for Standardization of Lightweight and Decorative Building Materials (SAC/TC195).
This section drafted by. Henan Building Materials Research and Design Institute Co., Ltd., Guangzhou Baiyun Chemical Industry Co., Ltd., Chengdu Silicon
Bao Technology Co., Ltd., Zhengzhou Zhongyuan Slander High-Tech Co., Ltd., Guangzhou Coats Industrial Co., Ltd., Guangdong Psida Seal
Adhesive Co., Ltd., Shandong Yulong Polymer Technology Co., Ltd., Jiangmen Daguangming Adhesive Co., Ltd., Hubei Huitian New Materials Co., Ltd.
the company.
The main drafters of this section. Duan Linli, Deng Chao, Zhang Guanqi, Li Buchun, Shang Yanfeng, Xu Yanyan, Li Yaozhong, Zhan Feng, Wang Qi, Feng Xiangjia,
Wang Cuihua.
The previous versions of the standards replaced by this section are.
---GB/T 13477.13-2002.
Building sealing material test method
Part 13. Determination of cohesiveness after cold drawing - hot pressing
1 Scope
This part of GB/T 13477 specifies the determination of cohesiveness of sealants for building and civil engineering after tensile-compression cycles at different temperatures.
Terms and definitions, principles, standard test conditions, test equipment and materials, test piece preparation, test piece handling, test procedures and test reports.
This section is applicable to the determination of the bonding properties of elastic sealants for building and civil engineering after repeated cooling and stretching-heat compression.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 13477.1 Test methods for building sealing materials - Part 1. Specification for test substrates (GB/T 13477.1-2002,
ISO 13640.1999, MOD)
GB/T 14682 Building sealing material terminology (GB/T 14682-2006, ISO 6927.1981, NEQ)
3 Terms and definitions
The terms and definitions defined in GB/T 14682 apply to this document.
4 Principle
A test piece was prepared by bonding a sealant sample between the surfaces of two parallel substrates. Subjecting the test piece to cooling and stretching under specified conditions
After the thermal compression cycle, check the damage of the bond or cohesion of the test piece.
5 standard test conditions
The standard test conditions are. temperature (23 ± 2) ° C, relative humidity (50 ± 5)%.
6 Test equipment and materials
6.1 Test equipment
6.1.1 Air drying oven. The temperature can be adjusted to (70 ± 2) °C.
6.1.2 Low temperature test chamber. The temperature can be adjusted to (-20±2) °C, and can accommodate the tensile test piece.
6.1.3 Container. For the storage of distilled water, soak the test piece according to Method B (see 8.2).
6.1.4 Test machine. The test piece can be stretched and compressed at a speed of (5.5 ± 0.7) mm/min.
6.1.5 Gage. The graduation value is 0.5mm.
6.2 Materials
6.2.1 Bonded substrate. Cement mortar board, aluminum board or glass board used to prepare test pieces shall comply with the provisions of GB/T 13477.1. Substrate shape
The shape and size are shown in Figure 1 and Figure 2. It is also possible to select other materials and sizes of substrates according to the agreement, but the bonding rule of the sealant sample is embedded.
The inch and area should be the same as shown in Figures 1 and 2. For each test piece, two substrates of the same material should be used.
6.2.2 Isolation pad. The surface should be anti-adhesive and used to prepare test pieces with a sealant section of 12mm×12mm (as shown in Figures 1 and 2).
6.2.3 Anti-adhesive materials. anti-adhesive films or anti-adhesive papers, such as polyethylene (PE) film, should be selected according to the recommendations of the sealant manufacturer. For preparation
Specimen.
6.2.4 Tensile positioning block. The tensile state of the specimen can be maintained at an elongation of 12.5%, 20% or 25% (see the width of the positioning block)
Table 1), or other elongations agreed upon by the parties.
6.2.5 Compression positioning block. The specimen can maintain a compression ratio of 12.5%, 20% or 25% (see the width of the positioning block)
Table 1), or other compression ratios agreed upon by the parties.
7 Preparation of test pieces
Before the test, the sealant sample to be tested and the test substrate shall be placed under standard test conditions for at least 24 h.
Use a skim gauze to remove the floating ash from the surface of the cement mortar board. The aluminum plate and the glass plate are washed with a solvent such as acetone and dried.
Prepare the test piece according to the sealant manufacturer's instructions (eg, whether to use the primer and multi-component sealant mixing procedure), the same substrate preparation
3 test pieces.
As shown in Figures 1 and 2, two bonded substrates and two spacer blocks are assembled into a cavity on the release material. Then test the sealant
The sample is embedded in the cavity to prepare a test piece. Pay attention to the following items when inserting the sample.
a) avoid the formation of air bubbles;
b) pressing the sample on the bonding surface of the substrate to bond and compact;
c) Trim the surface of the specimen so that it is flush with the top surface of the substrate and spacer.
Place the test piece on its side and remove the release material as soon as possible to allow the sample to fully cure or completely dry. During the curing period, the spacers should be kept
In situ.
8 Sample processing
8.1 A method
The prepared test piece was placed under standard test conditions for 28 days.
8.2 B method
The test piece is first processed according to the A method, and then the test piece is processed for 3 cycles as follows.
a) Store in a (70 ± 2) ° C dry box for 3d;
b) stored in (23 ± 2) ° C distilled water for 1d;
c) stored in a (70 ± 2) ° C dry box for 2d;
d) Store in distilled water at (23 ± 2) °C for 1 d.
The above procedure can also be changed to c)-d)-a)-b).
Note. The B method is a routine treatment procedure that uses heat and water to affect the curing speed of the test piece, and does not involve the durability information of the sealant.
The test piece after the B method was placed under the standard test conditions for 24h~6d before the test.
The unit is mm
Description.
1---cement mortar board;
2---sealing adhesive;
3---Isolation pad (6.2.2).
Fig.1 Test piece (cement mortar board) for cold drawing-bonding performance after hot pressing
The unit is mm
Description.
1---aluminum plate or glass plate;
2---sealing adhesive;
3---Isolation pad (6.2.2).
Figure 2 Cold-drawing test piece for bonding performance after hot pressing (aluminum plate or glass plate)
9 Test procedure
After the specimen is treated in accordance with Chapter 8, the spacer is removed.
The stretching and compression speed during the test was (5.5 ± 0.7) mm/min.
The tensile-compression range is ±12.5% or ±20% or ±25% (see Table 1), or other ranges agreed by the parties.
Table 1 Tensile-compression amplitude and corresponding width value of the test piece
Stretch-compression amplitude
Width after stretching a
Mm
Width after compression a
Mm
±25 15.0 9.0
±20 14.4 9.6
±12.5 13.5 10.5
a The initial width is 12mm.
The test piece is subjected to the following stretching-compression cycle as required.
the first week.
Day 1. Place the test piece in the low temperature test chamber (6.1.2) at (-20±2) °C, and then stretch the test piece to the test machine (6.1.4) after 3 hours.
The required amplitude is maintained at (-20 ± 2) °C with a tensile positioning block (6.2.4) for 21 h.
Day 2. Unstretch, place the test piece in a blast drying oven (6.1.1) at (70 ± 2) °C, and compress it on the test machine (6.1.4) after 3 hours.
Test the specimen to the required amplitude and maintain the compression state for 21 h at (70 ± 2) °C with a compression positioning block (6.2.5).
Day 3. Uncompress and repeat the first day step.
Day 4. Same as the second day of the steps.
Day 5 to Day 7. Uncompress and place the test piece under standard test conditions.
the second week.
Repeat the steps for the first week.
After the test piece is subjected to the above two-week cycle, the bond or cohesive failure is checked and measured with a suitable gauge (6.1.5) with a graduation value of 0.5 mm.
The depth (mm) of the bond or cohesive failure of each test piece was measured.
10 test report
The test report should state the following.
a) the name of the laboratory and the date of the test;
b) Test implementation standard GB/T 13477.13;
c) sample name, category (chemical type), color;
d) the batch number of the sealant;
e) substrate type (see 6.2.1);
f) the primer used (if used), the mix ratio used (multi-component sample);
g) test piece processing method (A method or B method);
h) the extent of the stretch-compression cycle (see Chapter 9);
i) the depth and area of bonding and/or cohesive failure of each test piece;
j) Any deviation from the test conditions specified in this section.
Appendix A
(informative appendix)
Structural changes in this section compared to ISO 9047.2001
Compared with ISO 9047.2001, this part has more adjustments in structure. The specific chapter number comparison is shown in Table A.1.
Table A.1 Comparison of this part with the ISO 9047.2001 chapter number
The ISO standard chapter number corresponding to the chapter number in this section
5 -
6.1 -
6.1.1~6.1.4 5.4~5.7
6.1.5 5.10
6.2 -
6.2.1~6.2.3 5.1~5.3
6.2.4~6.2.5 5.8~5.9
8.1~8.2 7.1~7.2
Appendix A -
Appendix B -
Note. Except for the above chapters, the chapter number of this part is the same as the chapter number o...