Core tip: On July 28, the official website of the Shandong Provincial Bureau of Quality and Technical Supervision announced the results of the provincial supervision and spot inspection of the second batch of construction sealant products in 2016. 10 batches of products from 10 companies did not meet relevant standards. Require.
On July 28, the official website of the Shandong Provincial Quality and Technical Supervision Bureau announced the results of the provincial supervision and spot inspection of the second batch of construction sealant products in 2016. 10 batches of products from 10 companies did not meet relevant standards. Require.
In the second quarter of 2016, the Shandong Provincial Quality and Technical Supervision Bureau organized and carried out provincial supervision and spot inspections on the quality of construction sealant products. This time, a total of 60 batches of construction sealant products produced by 60 companies in the province were randomly inspected. According to GB 16776-2005 “Silicone Structural Sealant for Construction” GB/T 14683-2003 “Silicone Construction Sealant”, JC/T 484-2006 “Acrylic Construction Sealant”, GB/T 29755-2013 “Elastic sealant for insulated glass“, JC/T 914-2014 “Butyl hot melt sealant for insulated glass”, JC/T 482-2003 (2015) “Polyurethane building sealing “Glass”, JC/T 882-2001 “Sealant for curtain wall glass joints” and other standards, the sag, tack drying time, extrudability/pot life, hardness, tensile strength of silicone structural sealant for construction Six items of adhesion and thermal aging; sag, extrusion, elastic recovery rate, tensile modulus, fixed elongation adhesion, fixed elongation adhesion after water immersion, and ultraviolet radiation of silicone building sealants 8 items including post-adhesion and mass loss rate; the fluidity, tack drying time, extrudability, elastic recovery rate, tensile modulus, constant elongation adhesion, and elongation adhesion after water immersion of the polyurethane building sealant 8 items including bonding properties and mass loss rate; sagging, tack drying time, extrudability, elastic recovery rate, set elongation adhesion, set elongation adhesion after water immersion, and elongation at break of acrylic building sealant 10 items including rate, elongation at break after water immersion, low temperature flexibility, and volume change rate; sag, surface drying time, hardness, elastic recovery rate, constant elongation adhesion, and tensile adhesion of the elastic sealant for insulating glass. 9 items including bonding properties, water-UV treatment, hot air aging, thermal weight loss, etc.; sag, extrudability, surface drying time, elastic recovery rate, tensile modulus, and elongation of the sealant used for curtain wall glass joints Eight items including adhesion, elongation adhesion after immersion in water and light exposure, and mass loss rate; three items including penetration, shear strength, and thermal weight loss of butyl hot-melt sealant for insulating glass were tested.
(Jiangxi New Materials Co., Ltd.)
Spot inspection found that Longkou Longlin Sealing Material Co., Ltd., Shandong Longkou Jiahe Industry and Trade Co., Ltd., Longkou Bohai Sealing Material Factory, Longkou Hongxing Fine Chemical Co., Ltd., Linqu County Jindi Adhesive Industry Co., Ltd., Linqu Ten batches of products from 10 companies including County Kailian Sealing Materials Factory, Longkou Deyuan Polymer Technology Co., Ltd., Weihai Chengjing Technology Co., Ltd., Zibo Yuantai Sealing Materials Co., Ltd., and Jinan Haote Sealing Materials Co., Ltd. did not meet relevant requirements. Standard requirements. Unqualified items involve elongation at break, elastic recovery rate, tensile modulus, tensile adhesion (tensile bond strength), penetration, etc.
