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GB/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 procedure Status: Valid GB/T 14683: Historical versions
Similar standardsGB/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/GBT14683-2017GB 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 ContentsForeword... 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 building1 ScopeThis 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 referencesThe 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 building3 Terms and definitionsFor 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 Classification4.1 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. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 14683-2017 be delivered?Answer: The full copy PDF of English version of GB/T 14683-2017 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 14683-2017_English with my colleagues?Answer: Yes. 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