News Details
Modified amine epoxy coatings crosslinking agent for cashew shell oil
2017-9-3 17:00:11
Modified amine epoxy coatings crosslinking agent for cashew shell oil
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
The samples were compared and tested by using the modified amine epoxy crosslinking agent, ketogenic crosslinking agent and the combination of the two.
Cashew shell oil modified amine epoxy crosslinking agent blending test method is as follows: selection of processed good 500 mm x 500 mm x 50 mm of concrete specimen, surface treatment after soaking in clean water after 24 h bails out, wipe with wet cloth in addition to the coating surface water droplets, standard under the condition of natural park 20 min; After coating the first coating, after coating, the air is parked for 3 h, and the time of the test is done. After 12 hours, it is submerged in 3% NaCl solution, and the standard condition is to park 9 h. Then apply the next one until the whole coating is completed and the corresponding test is completed. After curing 7 d, complete the corresponding test.
Mixed crosslinking agent of drying time and cashew nut oil crosslinking agent of drying time, ketone imide is obviously better than the kind of crosslinking agent, is mainly a phenolic hydroxyl group on the cashew nut oil, to the cross-linking reaction of epoxy and amine have good catalytic effect, coating drying quickly, can quickly crosslinking.
At the same time with mixed crosslinking agent and ketone imide adhesion of crosslinking agent has obvious advantages, mainly because the paint coating substrate surface is water, ketimine can kind of crosslinking agent and water reaction, and cashew nut oil cannot be completely discharge the water crosslinking agent, formed between coating and substrate are mixed with water, poor adhesion. Mixed crosslinking agent with no water, combined with cashew oil crosslinking agent to ensure the salt water resistance and salt tolerance.
With cashew shell oil modified amine epoxy crosslinking agent and ketone imide crosslinking agent of organic combination, with the advantage of the two, both the cashew shell oil modified amine epoxy crosslinking agent of excellent chemical corrosion prevention and rapid crosslinking performance, also had the ketone imide kind of crosslinking agent in wet area the advantage of crosslinking.
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
When coating contains a small amount of silane coupling solvent, after its coating, silane and migrate to the coating and substrate interface, and the moisture on the surface of inorganic reaction, hydrolysis produce silanol base, and with the substrate surface hydroxyl hydrogen bond or condensation into - Si - M (M) for inorganic surface, and silane molecules and silanol condensation, gathered in each other between form reticular structure of the film covering on the surface of the substrate.
Even under water leaching conditions, the coating of silane coupling agent is good on all kinds of inorganic substrate. Within the boundary layer between the have and the substrate, the interaction between silane and have been, the reticular structure of silane and have mutual penetration, enhance the cohesion and the stability of water erosion resistance, and stress so as to make a high modulus of substrate have been transferred to the low modulus, significantly improve the adhesion to substrate.
The effect of adding silane coupling agent on the adhesion of the product was tested by test, and the test method was as follows: concrete test was adopted for the bottom material. The surface treatment of 500 mm x 500 mm x 50 mm concrete specimen was selected and the surface treatment was soaked after 24 h in the clean water, and the water droplets were removed with wet cloth and the water was covered by the standard conditions. After coating the first coating, after coating, the air is parked in the air for 3 h, submerged in 3% NaCl solution, after 12 h, the standard condition is to park 9 h; After finishing the whole coating and completing the corresponding test, the corresponding test will be completed after curing 7 d.
The results show that the adhesion of silane coupling agent has been improved obviously, thus improving the anti-corrosion performance.
Wet cross-linked epoxy coatings are fast dry, can continue to underwater crosslinking, excellent abrasion resistance, resistant to salt water resistance, such as performance, to ensure the smooth coating, and ensure the coating can achieve the best protection effect.
Series of HTAC modified anhydride crosslinking agent, methyl benzene anhydride modification made by the four hydrogen, excellent toughness and heat resistance of crosslinking (24 kj / ㎡, the impact strength of glass transition temperature Tg at 120 ℃). It also developed the successful weathering resistance anhydride interlinking agent, which is modified by the toughening of methyl hexahydrobenzene anhydride and has no double bond in the molecular structure, and has good weatherability.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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