This article content is compiled by Siway editorial board:
Building sealant is a kind of adhesive used exclusively for bonding and sealing between materials in construction and civil engineering. At present, the building used in the high-grade sealant is mainly divided into silicone, polyurethane, polysulfide and acrylic acid four categories, respectively, for the construction of deformation displacement joints (such as curtain wall structure), non-deformation displacement joints (such as External walls) and other seams (such as roof waterproof sheet) and other joints of the adhesive seal.
This type of sealant must be able to withstand the changes in seams and the combined effects of the natural environment (such as water, light, heat, oxidation, dust, etc.) without damage, which poses a higher performance for the sealant The request. Therefore, attention to architectural sealants in the construction and construction of the field of application is the international development trend.
First, ISO / TC59 / SC8 basic situation
ISO / TC59 / SC8 (ISO Building and Civil Engineering Standardization Technical Committee Sealant Branch) was established in 1976, the main responsibility for the management of construction and civil engineering sealant with the standardization of technical work on the professional field of international standard revision project, extensive To seek the views of representatives of Member States, to strengthen communication and exchange among members, to work together to promote and reach agreement to ensure the ISO international standardization work effectively. ISO / TC59 / SC8 The original Secretariat is located in the British Standardization Association (BSI). In April 2009, by the ISO / TC59 vote, decided to move from the UK to China, in November the same year, approved by the National Standardization Management Committee, by the Shanghai Rubber Products Research Institute to assume the work of the Secretariat. This indicates that China has begun to cut a striking figure in advancing the international standardization work in the field of sealants in the chemical industry, which is conducive to promoting the competitiveness of China’s sealant products and has a far-reaching impact on international trade initiative.
There are 11 members in the ISO / TC59 / SC8, including 10 countries from the United States (ANSI), the UK (BSI), Germany (DIN) and Japan (JISC). The 16 members are from Switzerland (SNV) Italy (UNI), Belarus (BELST) and other 16 countries. ISO / TC59 / SC8 is the effective management of the standard 23, under the six working groups are WG10 appearance aesthetic research work group, WG13 sidewalk sealant working group, WG17 sealant volume and quality change research group, WG18 glass, anodized Aluminum alloy test substrate of the working group, WG19 suitable coating performance and coating compatibility research group and WG20 adhesion stripping performance working group, and set up three special groups, namely, test methods, adhesion performance, temperature And the effect of humidity. These working groups and thematic groups are responsible for the relevant international standards revision and special subject research on sealants.
Second, ISO / TC59 / SC8 work results
The effective implementation of the work of the international secretariat is a concrete manifestation of China’s standardization work into international standardization work and the responsibility of China as a permanent member of the world’s largest non-governmental standardization specialized agency. ISO / TC59 / SC8 The Secretariat actively guides and participates in international standardization activities. Over the past five years, the Secretariat has been committed to improving the standard level of building seal materials and increasing the right to speak in China’s standard revision of building seal materials. ISO / TC59 / SC8 has made remarkable achievements in promoting international standard revision, strengthening international standardization exchange and cooperation and serving the development of China’s industry. It has made a useful exploration for Shanghai’s substantive international standardization work.
1. To continuously improve the level of international standard revision
After nearly 40 years of efforts, ISO / TC59 / SC8 cumulative release of international standards 23, respectively, the terminology standard 2, the test standard 20, grading requirements 1 and so on. Since the Shanghai Rubber Products Research Institute has assumed the work of the Secretariat, in just five years, participated in 11 international standard revision work, has issued six international standards, the completion of the standard maintenance of 12, a strong impetus to the world building The development of sealing material technology. In the project group to make the proposed revision of the standard, there are three for China, greatly enhance our country in the field of building sealant voice. These international standards provide uniform requirements for the determination of the performance indicators, terminology and grading requirements of architectural sealants around the world, and promote international technical exchange and trade development.
For example, ISO 11617: 2014 “Building and civil engineering – building sealant after artificial weathering aging after the determination of cohesion” is China’s commitment to ISO / TC59 / SC8 since the Secretariat issued one of the important criteria. This standard opens up the research direction of the durability and anti-aging of the building sealant, and provides the effective test method for the first time to judge the dynamic cohesive properties of the sealant.
In addition, the revised ISO 6927: 2012 “Sealant Glossary” is a basic standard for regulating the terminology of construction and civil engineering sealants. Since the standard has been developed since 1981 has been nearly 30 years, with the rapid development of sealant technology, the corresponding terminology standards need to be revised. The Secretariat kept pace with the times and launched standard revision work in 2009, clarifying the scope of application of the standard, adding and modifying commonly used and accepted terms. The new standard uses English, French and German languages, for multi-national use.
Another example, ISO 11600: 2002 “classification and requirements of building structural sealants” is the ability to seal the sealant on the classification of an important standard, has been the United States, Japan, Germany and other countries a wide range of conversion and adoption, China GB / T 22083-2008 ” Building sealant classification and requirements “also refer to the standard. With the development of technology needs, the Secretariat aimed at the latest developments, is the United Nations experts outside the United Nations, to carry out the revision of the standard pre-research work to further study the expansion of the scope of the classification.
2. Continuously strengthen the international standardization of exchanges and cooperation
ISO / TC59 / SC8 has been continuously strengthened with international exchanges and cooperation with relevant agencies. The Secretariat is actively revisiting contacts with ISO / TC61 / SC11 (International Organization for Standardization / Plastics Technical Committee / Technical Subcommittee on Plastics), focusing on strengthening the standard docking work with international standards technical institutions and establishing a good working mechanism. At the same time, the ISO / TC59 / SC8 secretariat focuses on the close contact with the ISO / TC59 Secretariat, through the annual meeting of the General Assembly, to further strengthen cooperation with the TC59 Technical Committees to advance relevant work.
All along, the sealant industry’s international standards are mainly from Europe and the United States and other developed countries and regions of the sealant business to discuss the development of our enterprises rarely participate in, even if the terms of some of the standards of the objection, can only follow the implementation. ISO / TC59 / SC8 The Secretariat attaches great importance to the international exchange of standards in the field of standards, and actively guide China’s sealant enterprises to participate in international standardization work. At the ISO / TC59 / SC8 annual meeting held in Berlin, Germany, the Secretariat sent representatives from Shanghai Siway Building Material Co., Ltd., Shanghai Rubber Products Research Institute, Shanghai Polytechnic University and other sealants. , WG10, WG13, WG18, WG19, WG20 working group standard revision work; 2014 organized by the Shanghai Rubber Products Research Institute, Guangzhou Baiyun New Materials Co., Ltd., Henan Building Materials Research and Design Institute Co., Ltd., Shanghai University of Science and Technology, Guangzhou China, the United States, Belgium, Japan, Germany, the Netherlands, the United States, the United States, Belgium, Japan, the Netherlands, the United States, the United States, Representatives from Korea, on the construction of a number of sealant work items, launched a heated discussion and exchange. These initiatives completely changed China’s sealant production R & D enterprises and institutions in the field of international standards do not have the voice of the dilemma, and further promote China’s international advanced technology institutions and the standardization of communication and cooperation for China’s sealant products go abroad, to the world Laid a solid foundation.
At present, the Secretariat is working to strengthen cooperation with international experts in the field to proceed with ISO / DIS 11528 “Determination of appearance performance after aging of sealant”, ISO / DIS 11618 “Sidewalk sealant”, ISO / DIS 19861 ” Sealant curing behavior “, ISO / DIS 19862″ Determination of aging properties of road sealants “, ISO / DIS1 9863″ Determination of tear resistance of road sealants “and ISO 11527: 2010″ Determination of sealant adhesives ” The revision of a number of international standards. At the same time actively promote international consultation, the implementation of ISO 8394-2: 2010 “the use of standard equipment under the conditions of the determination of sealant extrusion performance” errata work.
Post time: Mar-03-2017