Determination method of tensile properties of existing silicone sealants and structural adhesives
A technology of tensile properties and measurement methods, which is applied in the measurement of tensile properties of structural adhesives, and in the field of silicone sealants, can solve the problems of inability to obtain test pieces and performance measurement, so as to save test costs and be easy to popularize. Simple to use and equipment
Active Publication Date: 2020-05-01
国检测试控股集团雄安有限公司
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Problems solved by technology
Because unused sealants and structural adhesives are not cured, they can be prepared into any shape and size, and then cured to obtain test pieces of any shape and size, which can meet the requirements of GB / T528-2009 and GB / T13477.8-2002 requirements, and the existing silicone sealants and structural adhesives have been cured, when sampling from the existing silicone sealants and structural adhesives, due to the size limitations of the existing silicone sealants and structural adhesives, it is not possible to obtain samples that meet the requirements of GB / T528-2009 and GB / T13477.8-2002 specified shape and size of the test piece, can not be measured performance
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[0044] In order to make the technical problems to be solved in the present invention, technical solutions and advantages clearer, a method for measuring the tensile properties of existing silicone sealants and structural adhesives will be provided below in conjunction with the present invention, including:
[0045] Step 1: Sampling the existing silicone sealants and structural adhesives to obtain strip samples; sampling is preferably done with a utility knife. Such as figure 1 as shown, figure 1 Insulating glass, 3 is silicone sealant, 2 is glass, 1 is the damage after sampling. When sampling, it is not advisable to start from the starting or ending part of the sealant or structural adhesive, it is better to sample from the middle part; the blade should be as close to the bonding surface as possible to minimize the loss of the width of the strip during the sampling process; for insulating glass When sampling the secondary rubber, the cutting depth of the blade should be when...
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The invention discloses a method for measuring tensile properties of existing silicone sealants and structural adhesives and belongs to the field of measurement of tensile properties of silicone sealants and structural adhesives. The method comprises the steps of sampling existing silicone sealants and structural adhesives to obtain adhesive tape samples; preparing the silicone sealants and structural adhesives different from the adhesive tape samples in color as repair adhesives; scrapping and painting and / or squeezing the repair adhesives on the adhesive tape samples, and solidifying the repair adhesives to obtain injection blocks; and peeling and / or cutting the injection blocks to obtain the samples with specified dimensions, wherein the effective test parts of the samples are the existing silicone sealants and structural adhesives. The blank of absence of a tensile property test method of the existing silicone sealants and structural adhesives in an existing building is filled, the reliability of the obtained result is ensured, and effective evaluation for safety and normalization on the products is achieved. The method is scientific, reasonable, simple, feasible, simple in equipment and easy to popularize and use.
Description
technical field [0001] The invention relates to the field of measuring the tensile properties of silicone sealants and structural adhesives, in particular to a method for measuring the tensile properties of existing silicone sealants and structural adhesives. Background technique [0002] Silicone sealants and structural adhesives are pastes made of polydimethylsiloxane as the main raw material, supplemented with crosslinking agents, fillers, plasticizers, coupling agents, and catalysts in a vacuum state. Cures at room temperature by reaction with water in the air to form an elastic silicone rubber. Silicone sealants are mainly used for weather-resistant sealing of various glass curtain walls, joint sealing between metal, glass, aluminum, tiles, plexiglass, coated glass, concrete, cement, masonry, rock, marble, steel, wood, Seam sealing on anodized aluminum and painted aluminum surfaces, etc. Silicone structural adhesives are mainly used for structural or non-structural bo...
Claims
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IPC IPC(8): G01N3/08G01N1/28
CPCG01N1/28G01N3/08G01N2203/0017
Inventor 丛林李莉莉代铮景晨刘璐史燕楠
Owner 国检测试控股集团雄安有限公司
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