News Details
High solids paint crosslinking agent
2017-5-10 15:43:47
High solids paint crosslinking agent. This paper adopted after matches crosslinking agent and the new development of quick drying, crosslinking agent, epoxy powder coating for high solid coatings and energy-efficient variety innovation to provide reliable sources.
The coating was tested with GB/T 1771-2007.
Epoxy coating crosslinking density calculation. The hydrophilic epoxy base of epoxy resin and the active hydrogen of the amine crosslinking agent are used in the nucleophilic reaction, forming the crosslinking network structure film, and the crosslinking density is calculated as follows:
Rho = F the Cw
Rho: the crosslinking density of epoxy coating, mol/g; F: the number of nets generated by each amine crosslinking molecule (F = active hydrogen number minus 2); Cw: the concentration of iamines crosslinking agents, mol/g.
The surface quality (Mc) can be characterized by the length (or relative molecular mass) of the interconnection points, and Mc = 1 / rho. The density of the coating reflects the degree of crosslinking, and the Mc reflects the size of the cross network aperture of the coating.
Epoxy varnish formulation: an epoxy resin composed of e-44, e-20 and hw-28 epoxy and the d-8 and TY300 polyamide.
Epoxy varnish formulation
Epoxy coating preparation: pour liquid epoxy varnish respectively each recipe in precoating thin glue 120 mm x 90 mm glass, full flow flat after 24 h in 30 ~ 35 ℃ crosslinking, crosslinking plate after soaking in 30 ℃ water, after 4 h, off 40 ~ 65 mu m free epoxy coating.
Chinese name: Diethyl toluene diamine(DETDA)
Chinese alias: aryl, aryl diethyl - aryl - methyl-p-phenylenediamine
English name: Benzenediamine, ar, ar-diethyl-ar-methyl-English aliases:Diethyltoluenediamine; ar, ar-Diethyl-ar-methylbenzenediamine;Diethylmethylbenzenediamine;
CAS No. :68479-98-1
EINECS No. :270 -877-4
Molecular formula: C11H18N2
Molecular Weight: 178.28
Boiling point: 310 ℃
Refractive index: 1.581
Flash Point: > 140 ℃
Inchi: InChI = 1/C11H18N2/c1-4-8-6-7 (3) 10 (12) 11 (13) 9 (8) 5-2/h6H ,4-5,12-13H2 ,1-3H3 density : 1.022
Risk Codes: R10; R35
RIDADR: UN 3082
Safety instructions: S2; S26; S39; S61
Packing Group: III
Hazard Class: 6.1
Membrane crosslinking density and water vapor transmission. In the reaction of epoxy resin and amine crosslinking agent, the dissociated epoxy coating of the different crosslinking density was formed, and the experiment of the flow of water vapor on the free epoxy coating was conducted. In unit time, water vapor through the amount of free epoxy coating with epoxy coating (rho) crosslinking density increase and decrease, the coating prevent water vapor through the ability to enhance with the increase of coating rho.
Iron red epoxy coatings main agent formula: high solid iron red epoxy coatings main agent by liquid bisphenol A type epoxy resin, thixotropic resin Ⅱ, red iron oxide, titanium dioxide, talc, barite powder, active compound with antirust paint, special additives, active diluents and the mixed solvent, etc.
Epoxy powder coating formula: three kinds of energy-saving epoxy powder embalming coatings are made by using fast dry crosslinking agent.
Coating preparation: according to formula of epoxy powder coating, spray powder coating on the iron of 140 ℃, the coating flow after, in 175 ℃ baking crosslinking 3 min, specimens for epoxy powder coating.
Crosslinking agent Mr And F value: H04 and H06 H09 quick dry type with epoxy crosslinking agent molecules containing active hydrogen addition reaction, latent lively urea and hydrogen bond, also contains functional groups can react with hydroxyl polymer, when calculating the crosslinking density (rho), use estimates of F value, average relative molecular mass of three kinds of crosslinking agent (Mr) and each amine crosslinking agent molecules generated mesh count (F).
The density and corrosion of the coating. Epoxy powder coating shall be tested and approved by the resistance to salt water and the boiling water test, proved that the newly developed H06 and H09 crosslinking agent of epoxy powder coating with good resistance to salt water and the boiling water resistance; Rho value of coating film is high and the formulation of the 13 have better resistance to salt water, the order for 13 11, 12 > > formula formula formula that the greater the crosslinking density of epoxy powder coating, resistant to salt water, the better.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
The coating was tested with GB/T 1771-2007.
Epoxy coating crosslinking density calculation. The hydrophilic epoxy base of epoxy resin and the active hydrogen of the amine crosslinking agent are used in the nucleophilic reaction, forming the crosslinking network structure film, and the crosslinking density is calculated as follows:
Rho = F the Cw
Rho: the crosslinking density of epoxy coating, mol/g; F: the number of nets generated by each amine crosslinking molecule (F = active hydrogen number minus 2); Cw: the concentration of iamines crosslinking agents, mol/g.
The surface quality (Mc) can be characterized by the length (or relative molecular mass) of the interconnection points, and Mc = 1 / rho. The density of the coating reflects the degree of crosslinking, and the Mc reflects the size of the cross network aperture of the coating.
Epoxy varnish formulation: an epoxy resin composed of e-44, e-20 and hw-28 epoxy and the d-8 and TY300 polyamide.
Epoxy varnish formulation
Epoxy coating preparation: pour liquid epoxy varnish respectively each recipe in precoating thin glue 120 mm x 90 mm glass, full flow flat after 24 h in 30 ~ 35 ℃ crosslinking, crosslinking plate after soaking in 30 ℃ water, after 4 h, off 40 ~ 65 mu m free epoxy coating.
Chinese name: Diethyl toluene diamine(DETDA)
Chinese alias: aryl, aryl diethyl - aryl - methyl-p-phenylenediamine
English name: Benzenediamine, ar, ar-diethyl-ar-methyl-English aliases:Diethyltoluenediamine; ar, ar-Diethyl-ar-methylbenzenediamine;Diethylmethylbenzenediamine;
CAS No. :68479-98-1
EINECS No. :270 -877-4
Molecular formula: C11H18N2
Molecular Weight: 178.28
Boiling point: 310 ℃
Refractive index: 1.581
Flash Point: > 140 ℃
Inchi: InChI = 1/C11H18N2/c1-4-8-6-7 (3) 10 (12) 11 (13) 9 (8) 5-2/h6H ,4-5,12-13H2 ,1-3H3 density : 1.022
Risk Codes: R10; R35
RIDADR: UN 3082
Safety instructions: S2; S26; S39; S61
Packing Group: III
Hazard Class: 6.1
Membrane crosslinking density and water vapor transmission. In the reaction of epoxy resin and amine crosslinking agent, the dissociated epoxy coating of the different crosslinking density was formed, and the experiment of the flow of water vapor on the free epoxy coating was conducted. In unit time, water vapor through the amount of free epoxy coating with epoxy coating (rho) crosslinking density increase and decrease, the coating prevent water vapor through the ability to enhance with the increase of coating rho.
Iron red epoxy coatings main agent formula: high solid iron red epoxy coatings main agent by liquid bisphenol A type epoxy resin, thixotropic resin Ⅱ, red iron oxide, titanium dioxide, talc, barite powder, active compound with antirust paint, special additives, active diluents and the mixed solvent, etc.
Epoxy powder coating formula: three kinds of energy-saving epoxy powder embalming coatings are made by using fast dry crosslinking agent.
Coating preparation: according to formula of epoxy powder coating, spray powder coating on the iron of 140 ℃, the coating flow after, in 175 ℃ baking crosslinking 3 min, specimens for epoxy powder coating.
Crosslinking agent Mr And F value: H04 and H06 H09 quick dry type with epoxy crosslinking agent molecules containing active hydrogen addition reaction, latent lively urea and hydrogen bond, also contains functional groups can react with hydroxyl polymer, when calculating the crosslinking density (rho), use estimates of F value, average relative molecular mass of three kinds of crosslinking agent (Mr) and each amine crosslinking agent molecules generated mesh count (F).
The density and corrosion of the coating. Epoxy powder coating shall be tested and approved by the resistance to salt water and the boiling water test, proved that the newly developed H06 and H09 crosslinking agent of epoxy powder coating with good resistance to salt water and the boiling water resistance; Rho value of coating film is high and the formulation of the 13 have better resistance to salt water, the order for 13 11, 12 > > formula formula formula that the greater the crosslinking density of epoxy powder coating, resistant to salt water, the better.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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