Commonly used coating crosslinking agent

Commonly used coating crosslinking agent, this article selects the current commonly used several kinds of typical crosslinking agent on the market, has carried on the system application testing, studies the different types of crosslinking agent on the properties of epoxy resins coatings, based on this, advances the epoxy coatings for crosslinking agent solution for your reference.

On the domestic market at present the epoxy crosslinking agent variety, described function also has different degree of exaggeration, and found many problems in the practical use, how to correctly choose crosslinking agent products, users we made some research in this respect, from theoretical and practical application has carried on the concrete discussion.

In order to do the contrast research, we selected the representative samples of several kinds of crosslinking agent on the analysis and test of these samples are respectively 593 crosslinking agent, no.t31.welcome crosslinking agent, crosslinking agent, crosslinking agent, 810 651 ketone imide crosslinking agent, NX - 2040, etc.

Several kinds of crosslinking agent, and from the literature and an introduction to the data, from the theoretical analysis has the following characteristics: 593 crosslinking agent is diethylene triamine epoxy propane butyl ether and the product of the addition reaction, can be at room temperature and epoxy crosslinking reaction, because of its molecular structure containing long chain structure of C11, therefore has good toughness and bending and impact strength.

No.t31.welcome crosslinking agent is polyamine, formaldehyde, phenol, nice nice addition reaction of man by man multivariate amine, no.t31.welcome crosslinking agent is to actually non-toxic grade of crosslinking agent, application security, and under the low temperature crosslinking bisphenol A type epoxy resin, can be in 80% humidity and underwater applications, crosslinking little shrinkage.

651 crosslinking agent is a kind of crosslinking agent of epoxy resin, polyamide from tung oil acid and multiple reaction of amine tung oil acid dimers multivariate amine, due to the structure containing long carbon chain fatty acid and amine, can make the crosslinking products with high elasticity and stick relay and resistance to water, it has good construction performance, the proportion of ingredients is wide, small toxicity, basic no volatile matter, can in the damp of the surface of the metal and concrete construction, the disadvantage is that crosslinking slower, low heat, low heat distortion temperature, gasoline, hydrocarbon solvent resistance is poor.

810 crosslinking agent is modified amine crosslinking agent, underwater, humidity, low temperature (0 ℃), drying conditions, such as can cross-linked epoxy resin, can be in with the coating on the surface of the water, has the good invasive.




Chinese name: Diethyl toluene diamine(DETDA)

Physical and chemical properties: light yellow transparent liquid, slightly soluble in water, soluble in alcohols, ethers, ketones and other polar organic solvents, and polyether, polyester polyol compatibility.

Density 1.022

Viscosity (20 ℃) ??mPa·ss290±10

Pour Point ℃-9

Boiling point of310°C

Flash Point°C161.1°C


Ketimine crosslinking agent is reaction with multiple amine ketone was the product of the use of ketone imide class crosslinking agent can be made into wet conditions and underwater crosslinked coating.

NX - 2040 is the card's production of a unique performance, not containing phenol, multi-purpose replace phenolic aldehyde amine epoxy crosslinking agent. It on the molecular structure of the hydrophobic chain of excellent long fat, room temperature high reactivity of fatty amine, and chemical resistance of benzene ring structure.

Make it namely has the general phenolic aldehyde amine cold, damp quick crosslinking, and generally low molecular polyamide crosslinking agent of long period operation, excellent flexibility and wider mixing ratio of resin. Its unique structure, make it in the environmental protection, high performance, low cost, multi-purpose, quick crosslinking, heavy-duty epoxy resin has been widely used in the coating.

The tensile strength of the elastic weather resistance type acrylic polyurethane coating with elastic crosslinking agent - NCO content increased, while the elongation at break along with the increase of - NCO content gradually reduced; The polyether polyols GE - 220 composite crosslinking agent preparation of coating has the highest tensile strength and elongation at break;

Under the same relative molecular mass, using the polyol polytetrahydrofuran than the polyether polyols preparation of coating high tensile strength, and elongation at break is low; With the self-made elastic content of rigid crosslinking agent in the crosslinking agent, the tensile strength of the coating increased, the elongation at break decreases. It is advisable to rigid crosslinking agent amount to 15%.

Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd 

Diethyl toluene diamine(DETDA)  http://www.yaruichem.com