GB/T 14683-2017 PDF English
US$225.00 · In stock · Download in 9 secondsGB/T 14683-2017: Silicone and modified silicone sealants for building Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB/T 14683: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 14683-2017 | English | 225 |
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Silicone and modified silicone sealants for building
| Valid |
| GB/T 14683-2003 | English | 359 |
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Silicone sealant for building
| Obsolete |
| GB/T 14683-1993 | English | 319 |
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Silicone sealant for building
| Obsolete |
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GB/T 14683-2017: Silicone and modified silicone sealants for building---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/GBT14683-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 91.100.50
Q 24
Replacing GB/T 14683-2003
Silicone and modified silicone sealants for building
Issued on: SEPTEMBER 07, 2017
Implemented on: AUGUST 01, 2018
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 6
4 Classification... 6
5 Requirements... 8
6 Test methods... 10
7 Inspection rules... 15
8 Marking, packaging, transportation and storage... 17
Silicone and modified silicone sealants for building
1 Scope
This Standard specifies the terms and definitions, classification, requirements, test
methods, inspection rules, marking, packaging, transportation and storage of silicone
and modified silicone sealant for building.
This Standard applies to silicone sealant for building for general decoration and non-
structural assembly of building curtain walls, as well as modified silicone sealant for
building for building joints and shrinkage displacement joints.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 13477.1, Test method for building sealants - Part 1.Specifications for test
substrates
GB/T 13477.2, Test method for building sealants - Part 2.Determination of
density
GB/T 13477.3-2017, Test method for building sealants - Part 3.Determination of
extrudability of sealants using standardized apparatus
GB/T 13477.5-2002, Test method for building sealants - Part 5.Determination
for tack-free time
GB/T 13477.6-2002, Test method for building sealants - Part 6.Determination of
flow
GB/T 13477.8-2017, Test method for building sealants - Part 8.Determination of
tensile properties
GB/T 13477.10-2017, Test method for building sealants - Part 10.Determination
of tensile properties at maintained extension
GB/T 13477.11-2017, Test method for building sealants - Part 11.Determination
of tensile properties at maintained extension after immersion in waters
GB/T 13477.13-2002, Test method for building sealants - Part 13.Determination
of adhesion/cohesion properties at variable temperatures
GB/T 13477.17-2017, Test method for building sealants - Part 17.Determination
of elastic recovery
GB/T 13477.19, Test method for building sealants - Part 19.Determination of
change in mass and volume
GB/T 14682, Building sealing material vocabulary
GB/T 22083-2008, Classification and requirements for building sealants
GB/T 31851-2015, Test method for alkane plasticizer in structural silicone
sealants
JC/T 485-2007, Glazing elastic sealants for building
3 Terms and definitions
For the purposes of this document, the following terms and definitions, as well as those
given in GB/T 14682, apply.
3.1
silicone sealant for building
Room-temperature-cured single-component and multi-component sealants, with
polysiloxane as the main component, which are divided into acidic and neutral
according to the curing system.
3.2
modified silicone sealant for building
Room-temperature-cured single-component and multi-component sealants, with silane-
terminated polyether as main component.
3.3
set at maintained extension
The remaining deformation of a test piece after it is stretched to a certain length and
allowed to recover freely for a certain period of time, expressed as the ratio (θ) of the
remaining deformation to the given elongation.
4 Classification
4.1 Types
Squeeze the test sample out of the package; scrape it flat and inspect it visually.
6.3 Density
Carry out the test in accordance with the provisions of GB/T 13477.2.
6.4 Sag
Carry out the test in accordance with the provisions of 6.1 in GB/T 13477.6-2002.Place
the test piece vertically in a (50±2) ℃ constant temperature box for 4 h.
6.5 Tack-free time
Carry out the test in accordance with the provisions of GB/T 13477.5-2002.Type
inspection shall adopt method A test, and ex-factory inspection can adopt method B test.
6.6 Extrusion
Carry out the test in accordance with the provisions of 8.2 in GB/T 13477.3-2017.The
extrusion hole diameter is 4 mm and the sample test temperature is (23±2) ℃.
6.7 Working life
6.7.1 Carry out the test in accordance with the provisions of 8.3 of GB/T 13477.3-2017.
The extrusion hole diameter is 4 mm and the sample test temperature is (23±2) ℃.
6.7.2 Test three samples and extrude each sample three times, with one extrusion at
appropriate intervals. Calculate the extrusion rate according to Chapter 9 of GB/T
13477.3-2017; draw a graph of the arithmetic mean of the volume extrusion rate and
the time after mixing; read the time corresponding to the extrusion rate of 50 mL/min,
which is the working life. Accurate to 0.5 h.
6.8 Elastic recovery rate
Carry out the test in accordance with the provisions of GB/T 13477.17-2017.The test
elongation is shown in Table 5 of this Standard.
6.9 Tensile modulus
Carry out the test in accordance with the provisions of GB/T 13477.8-2017; determine
and calculate the secant tensile modulus (MPa) when the sample is stretched to the
corresponding elongation specified in Table 5 of this Standard.
The UV test box shall comply with the provisions of 5.12.1 of JC/T 485-2007.
Illuminate continuously for 300 hours without immersion in water, and the surface
temperature of the test piece during illumination is (40±5) ℃.
After the illumination is completed, carry out the test in accordance with the provisions
of GB/T 13477.10-2017.The test elongation is shown in Table 5 of this Standard. The
test temperature is (23±2) ℃.
After the test, inspect the samples according to 7.1 of GB/T 22083-2008 and evaluate
the damage of the samples according to 7.3 of GB/T 22083-2008.
6.13 Adhesion after immersion in water and exposure to light
Carry out the test according to the provisions of 5.12 of JC/T 485-2007.The immersion
and illumination time is 300 h. The test elongation is shown in Table 5 of this Standard.
After the test, inspect the samples according to 7.1 of GB/T 22083-2008 and evaluate
the damage of the samples according to 7.3 of GB/T 22083-2008.
6.14 Adhesion/cohesion properties at variable temperatures
Carry out the test in accordance with the provisions of GB/T 13477.13-2002.The
tension and compression range of the test are shown in Table 5 of this Standard. After
the test, inspect the samples according to 7.1 of GB/T 22083-2008 and evaluate the
damage of the samples according to 7.3 of GB/T 22083-2008.
6.15 Mass loss rate
Carry out the test in accordance with the provisions of GB/T 13477.19.
6.16 Alkane plasticizer
Carry out the test according to the provisions of Chapter 7 in GB/T 31851-2015.
6.17 Set at maintained extension
6.17.1 Test equipment
6.17.1.1 Tensile testing machine. capable of stretching the test piece at a speed of (5.5
± 0.7) mm/min.
6.17.1.2 Positioning pad. used to control the width of the stretched sample, enable the
sample to maintain an elongation of 30% of the initial width.
6.17.1.3 Vernier caliper. the graduation value is 0.1 mm.
6.17.2 Test procedure
Remove the isolation pads from the prepared and cured samples (6.1.3); measure the
initial width Wi at both ends of each sample. Place the test piece in a tensile testing
a) Trial production of new products or trial production of old products in the new
factory;
b) Under normal production, it shall be carried out at least once a year;
c) When there are major changes in the raw materials, formula, process and
production equipment of the product, which may affect the product quality;
d) When the product is resumed after being discontinued for more than 6 months;
e) When the factory inspection results are significantly different from the last
type inspection.
7.2 Batch
Products of the same type and grade are inspected in batches of 5 t; those less than 5 t
are also considered as a batch.
7.3 Sampling
For single-component products, randomly select 3 packages from the batch of products,
and randomly select 4 samples from each package, for a total of 12 samples.
For multi-component products, randomly take samples according to the ratio, with a
total of 6 kg; the samples shall be sealed and packaged immediately after sampling.
After sampling, divide the samples into two equal parts. Use one part for testing, and
the other for backup.
7.4 Determination rules
7.4.1 Single item determination
For the tests of sag, tack-free time, tensile properties at maintained extension, tensile
properties at maintained extension after immersion in water, adhesion after UV
irradiation, and adhesion/cohesion properties at variable temperatures, if each test piece
complies with the requirement, judge the item to be qualified. If the test results of other
items meet the standard requirements, judge the item to be qualified.
When one of the tensile modulus of high modulus products at 23 °C and -20 °C meets
the requirements in Table 2 or 3, judge the item to be qualified.
When the tensile modulus of low modulus products at both 23 °C and -20 °C meet the
requirements of Table 2 or Table 3, judge the item to be qualified.
7.4.2 Comprehensive determination
When the test results meet all the requirements of Chapter 5, judge the batch of products
to be qualified.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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