Tianrun Gome provides a rapid method for determining the bond strength of dispersible polymer powders by the film forming properties of latex powder.
Tianrun Gome teaches you how to detect the bond strength test of dispersible latex powder!
Taian Tianrun Gome Industry & Trade Co., Ltd. introduced advanced technology and key equipment for the production of German dispersible polymer powder, and cooperated with many building materials "target=_blank> building materials colleges and other units to develop Taishan Tianrun brand dispersible latex. Powder and Wacker brand dispersible polymer powder. The dispersible polymer powder series is mainly used in construction dry mortar and building insulation, which can improve the quality of construction engineering, improve the level of construction mechanization, improve the construction environment and save water. Energy saving. And more widely used in other areas.
The redispersible latex powder is a binary or ternary copolymer of vinyl acetate and vinyl versatate-VeoVa or ethylene or acrylate. The modified emulsion powder obtained by spray drying has good redispersibility. Sexually, redispersed into an emulsion upon contact with water, and its chemical properties are identical to those of the initial emulsion. The redispersible latex powder is a new type of building material additive which has been popularized in recent years. In the traditional sense, the dispersible polymer powder is mainly used for the modification of building materials such as cement and mortar. With the deeper understanding of dispersible polymer powders, the application range of redispersible polymer powders is becoming wider and wider. The use of redispersible polymer latex powders as coating film-forming materials is an important development of “environmentally friendly coatingsâ€. In addition to the construction field, research on dispersible polymer powder has been extended to many new fields, such as the medical industry and the cosmetics industry. Therefore, the market for dispersible polymer powder has broad prospects and wide application. In the field of construction, the bonding strength of cocoa dispersible polymer powder is high, so the inspection of the bond strength of the dispersible polymer powder is indispensable. At present, the bond strength test for dispersible polymer powder is mostly based on the building materials of the People's Republic of China "target=_blank> building materials industry standard JC/T438-2006, but this method detects the bond strength of the dispersible polymer powder for at least 7 days. The detection time is too long. In view of the shortcomings of the detection of the adhesive strength of the above dispersible polymer powder, the present invention provides a rapid determination method of the bond strength of the dispersible polymer powder by the film forming property of the latex powder. Through the relationship between the low-temperature film forming rate and the bonding strength, the adhesive strength of the latex powder is objectively and quickly detected, and the detection method of the redispersible latex powder is cumbersome and the defects are too long. The method has a fast measurement speed and the measurement result. Accurate, in line with the current high efficiency and fast-paced production mode of the society. The method for detecting the bond strength of dispersible polymer powder provided by Tianrun Gome is characterized by the following steps: (1) taking 5g of dispersible polymer powder Into the glass measuring cup, add IOg of pure water and stir for 2 min to make it evenly mixed; (2) After the mixed measuring cup is allowed to stand for 3 min, stir again for 2 min; (3) The solution in the measuring cup is all applied to a horizontally placed clean glass plate; (4) The glass plate is placed in a DW100 low temperature environment simulation test chamber; (5) placed under an environmental simulation condition of 0 ° C for 1 hour. After that, the glass plate is taken out, the film formation rate is tested, and the standard bond strength of the dispersible polymer powder in use is converted according to the film formation rate. In the above-mentioned method for detecting the bond strength of the dispersible polymer powder, The dispersed latex powder solution is evenly spread on an IOOcm2 glass plate marked with a grid scale, and the film formation rate can be read by a microscope scale. The above-mentioned method for detecting the bond strength of the dispersible polymer powder can be redispersed. The relationship between the bond strength of the latex powder and the film formation rate is: δ = λ μ, where δ is the bond strength (Mpa); λ is the conversion factor of 1.25; μ is the film formation rate.
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