News Details
Waterborne wood coatings crosslinking agent
2017-4-3 15:38:57
Waterborne wood coatings crosslinking agent, the performance test. Test principle: by the water immersion test method to determine the resistance to water sample.
Sample: (1) no added crosslinking agent of waterborne wood coatings; (2) add l % crosslinking agent of waterborne wood coatings; (3) adding 1.5% crosslinking agent of waterborne wood coatings.
Selected waterborne wood paint coating and drying: will the according to its technological standard spray respectively in three of the 10 cm x 15 cm on tin plate, and then dry dry conditions and time as stipulated in the product standard, finally according to the standards prescribed by the conditions of constant temperature and humidity and time to state regulation.
By applied experimental results it can be seen that adding 1% ~ 2% of nitrogen compounds c organism can obviously improve the selected several kinds of coating of plate with former 1:1 (mixture of paraffin wax and rosin sealing side, sealing side width is 2 ~ 3 mm.
Performance. Nitrogen compounds c organism structure has a certain influence on its performance, increasing the main chain of the hydrophilic group to increase its solubility in water.
Test method: add distilled water in the glass tank, adjust the water coating can increase the tensile ability.
Given the limitations of applied experiment, we investigate the coating and substrate type is less, this to our future work is put forward more requirements. Different coating resin, different substrate, different USES of the water-based coating is different to the requirement of crosslinking agent, we proposed the main chain of the synthesis of different structure of n propyl organism kind of crosslinking agent, were applied in the experiment, widen and accurate positioning of nitrogen application field of c totally kind of crosslinking agent.
Temperature of (23 + 2) (or higher temperature), and maintain the temperature in the whole test process. Put people among them, the test plate and two-thirds of the length of each test plate, soak in water. At the end of the product standards stipulated by the immersion time, will test board, out of the tank with filter paper blot, with visual inspection test board, and record whether lose the light, color, blister, wrinkling, fall off, rust.
To sum up, we synthesized a series of n propyl organism compounds, and their structures have been characterized. Of synthesis of n propyl organism compound as crosslinking agent in waterborne coatings, and through the relevant application experiments.
Note: the experimental temperature (50 + 2) ℃, time of 5 h.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Raw material ：
TDA industrial, Sichuan production
Ethylene (Et) polymer grade, Shanghai production
TEA industrial imports
A reagent grade additives
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Raw material ：
TDA industrial, Sichuan production
Ethylene (Et) polymer grade, Shanghai production
TEA industrial imports
A reagent grade additives
Test of examining the crosslinking performance. As can be seen from the results, homemade TTMAP compared with imported products, crosslinking performance can fully meet the standard.
Confirmed by 1 h - NMR (nuclear magnetic resonance) synthesis of n propyl organism compound structure. Three ester content of ester, map no double bonds in the characteristic peak, so we think the synthetic compounds as the target product, amount of n propyl organism functional groups in the target product meet the requirements. Water soluble test result is: the crosslinking agent < crosslinking agent B < crosslinker c, which is corresponding with the structure of the compounds.
Water-based paint thinner on the water. Water-based paint including water soluble paint, water diluted paint, water dispersion paint, latex paint) 3 kinds. Water soluble paint with water soluble resin as film forming matter, represented by polyvinyl alcohol and its various modification, there are water soluble alkyd resin, water soluble epoxy resin and inorganic polymer water-based resin, etc.
After water paint diluted sex refers to the emulsion as film forming matter of emulsion paint, make solvent resin soluble in organic solvent, and then with the help of the emulsifier on the strong mechanical stirring made resin dispersed in water to form emulsion, called after emulsion, emulsion paint made of water to dilute in construction.
Water dispersed paint mainly refers to synthetic resin emulsion as film forming matter of paint. Emulsion is to point to in the presence of emulsifier, in the process of mechanical agitation, unsaturated vinyl monomers in a certain temperature under the condition of polymerization of dispersed emulsion composed of small particles dispersed in water. To add a little of water soluble resin emulsion preparation cannot be called a emulsioni paint of paint. Strictly speaking water diluted paint also cannot be called a emulsioni paint, but also to be classified as emulsioni paint habits.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Spanish
French
Italian
Portuguese
Japanese
Korean
Arabic
Russian