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Common coating with amine crosslinking agent

2017-4-3 15:38:45

Common coating with amine crosslinking agent,Such as beta hydroxy ethyl ethylene diamine (120) crosslinking agent, beta - hydroxyethyl divinyl three amine, beta - hydroxyethyl adipic amine and hydroxyl methyl hexamethylenediamine, etc.

Beta - hydroxyethyl ethylenediamine is a kind of chemicals, structure surrounds us is H2N (CH2) 2 nh (CH2) 2 oh used for room temperature of epoxy resin adhesives fast crosslinking agent, dosage of reference 16 ~ 18, crosslinking conditions / 10 h at room temperature or 100 ℃ / 4 h.

According to the number of hydrogen is replaced, which in turn can be divided into primary amine, primary amine RNH2, (secondary amine) R2NH secondary amine and tertiary amine (tertiary amine) R3N, quaternary ammonium salt (quaternary ammonium salt) R4N + X -, such as methylamine CH3NH2, aniline C6H5NH2, ethylenediamine H2NCH2CH2NH2 and diisopropylamine (CH3) 2 ch 2 nh, triethanolamine (HOCH2CH2) 3 n, tetrabutyl ammonium bromide (CH3CH2CH2CH2) 4 n + Br -. Four hydroxyl ammonium hydroxide or ammonium salt of replacing, called quaternary amine alkali (quaternary ammonium hydroxide) or quaternary ammonium salt (quaternary ammonium salt).

Simple amine named to amine as functional groups, called a amine, first to write the name of the hydroxyl of connected to the nitrogen atoms, again with amine word suffix; Diamine and multiple amine primary amine, amino even in open chain when the hydroxyl or connected directly on the benzene ring, can be called diamine or three amine. More complex amine, can be named as a derivative of hydrocarbon. Quaternary ammonium compounds can be named as a derivative of ammonium. Quaternary ammonium compounds can be named as amine derivatives.

According to amine molecules are connected to the nitrogen atom of the type of the hydroxyl and amine can be divided into aliphatic amine and aromatic amine. If amine molecules containing two or more amino (NH2), depending on the amino number of how many, can be divided into diamine, ternary amine.

Amino nitrogen atoms in the structure, much like in the ammonia nitrogen atoms, is based on three sp or hydroxyl connected with hydrogen, hybrid orbitals formed a pyramid, leaving a sp3 hybridization orbit by a lone electron pair. If an amine has three different groups, should be pairs of enantiomers. In flip amine molecules with unpaired electron low activation energy, the need to isolate the enantiomer.

Experiments show that the amine and ammonia molecules with prismatic tapered structure, nitrogen atoms as the sp3 hybridization, bond Angle is about 109 degrees. In amine molecules, three sp3 hybridized orbital respectively in the s orbital of hydrogen or carbon atoms of hybrid orbital overlap to form three 6 keys, left a lone pair electrons occupy the fourth sp3 orbitals, located in the edge at the top of the vertebral bodies.

Aniline is sprayed structures, but H - N - H bond Angle is larger, 113.9 degrees, N - N - H plane and the Angle of the benzene ring plane intersection is 38 degrees.

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

If amine molecules in the nitrogen atom has three different groups, have a chiral, theoretically should exist pairs of enantiomers.

Due to the energy barrier between the two enantiomers is quite low, approximately 21 kj/mol, can rapidly at room temperature conversion, actually such enantiomer have yet to be partition.

In the quaternary ammonium salt, all the four nitrogen sp3 orbitals for bonding, if on the nitrogen atom has four different groups, there exists enantiomorphism isomers. For example: methyl iodide dilute propyl phenyl benzyl amine into right-handed and left-handed optical isomers.

Silicone resin has excellent high and low temperature resistance and weather resistance, low surface energy and hydrophobic, but pure organic silicon resin adhesion and mechanical performance is poorer, complex coating preparation process, high production costs; Epoxy resin has excellent adhesive and anti-corrosion properties, but poor flexibility and weatherability; Poly (aspartic acid resin has excellent resistance to yellowing, anticorrosion and wear-resisting performance, but its price is higher, weather resistance, wind resistance and freeze resistance poor performance.

Fluorine resin in weather resistance, chemical resistance, resistance to chlorine ion permeability, stain resistance, hydrophobicity and freeze resistance, etc, have excellent performance, but its flexibility and other poor adhesion between the surface of materials, and resin production cost is high, the wind power station wind field environment difference is very big, especially in our country inland sand big, big temperature difference between day and night, strong sunlight exposure, natural environment of the rain and snow, and the sea and sea is high salt fog, high humidity, salt water and Marine corrosion and other bad environment, so different requirements on the coatings performance of wind farms has great difference.

Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd

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

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