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Epoxy paint crosslinking agent
2017-8-9 1:21:25
Epoxy paint crosslinking agent
Diethyltoluenediamine Raw material ：
TDA industrial, Sichuan production
Ethylene (Et) polymer grade, Shanghai production
TEA industrial imports
Aniline, formaldehyde polyphenylamine formaldehyde resin as epoxy used crosslinking agent; The modified dimethyl ethanolamine by butyl borate, diethylene glycol (or propylene glycol), can be used for the excellent medium temperature epoxide crosslinking agent. Boron trifluoride - (BF3) and amines such as ethylamine, phenylamine, p-methylaniline, n-methylaniline and other formation complexes, at room temperature have excellent stability.
15-30 ℃ can save more than six months, under room temperature, rapid decomposition, emits the amine epoxy crosslinking rapidly, so is a good latent type crosslinking agent; By phthalic anhydride reaction with divinyl three amine to produce the development of amide ring compound, 25 ℃ placed six months stability, decomposition of around 80 ℃ are neighbors benzol imine 2, crosslinking and divinyl three amine epoxy resin; In addition, the addition of screw cyclodiamine is also a good cross-linking agent for epoxy.
In addition, for some of the crosslinking agent with physical method modified amine department, aims to change physical state or adjust the crosslinking reaction rate, for example, a low concentration of eutectic amine according to certain proportion miscibility, form a eutectic, facilitate crosslinking operation. Such as ZZL crosslinking agent
Its appearance is amber transparent liquid.
Liquid fat and solid aromatic amine mix to form a liquid mixture, containing mimidazol-type stimulants of mesodimethylamine and 4 ', 4 '- diamino-methane mixtures. Solid-state aromatic amines can also be obtained by means of preparation of cold liquids. Such as m-phenylene diamine heating melting, heating up to 115-120 ℃, the heat preservation 5 min, and then the natural cooling for a quick m-phenylene diamine supercooled liquid, easy to use.
5 with or 6 ligand silicates can be easily synthesized.
This kind of super coordination silicate stability at room temperature, but at high temperature is not stable, heating type silicate decomposition of free amine and 4 coordination of silicon compounds, so as the latent sexual intercourse agent of epoxy resin is effective. In addition, it can be used as crosslinking reaction accelerator for acid anhydride crosslinking agent, which can be used for casting and bonding several layers.
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
Synthesis method: boil the methanol solution of trimethoxyphenyl silane, phthalate and benziline for 10-15min. The resulting crystal sediment was filtered and washed with cold methanol, with benzyl dimethylamine dimethyl silicate PhCH2NHMe2PhSi (C6H4O2) 2.
The silicate 2, 100 with the partial benzene anhydride 14 3 armour of bisphenol A type epoxy resin composites have five months of storage period at room temperature, the crosslinking conditions of 200 ℃, 8.5 s.
Ethylenediamine silicate si2 (H2NCH2CH2NH 3) 2 - (C6H4O2) 3 in liquid bisphenol A type epoxy resin added 25%, the compound can be stored at room temperature, 300 d, more than 175 ℃. 130 min after crosslinking tensile strength of 20.67 MPa.
Mannich has been modified by mannich for polyamines such as adipolamine, lipocycline and aromatic amine. The product performance has been improved greatly, and the three generations of phenolic amine (t-31) crosslinking agent have the following characteristics:
1) reducing the volatility, irritation and toxicity of lower levels of amine;
2) low viscosity liquid, easy to mix with epoxy resin;
3) the range width of epoxy resin can be adjusted to control crosslinking speed;
4) the phenolic skeleton was introduced in the structure, and the heat resistance of crosslinking was improved.
5) phenol hydroxyl was introduced in the structure, which greatly enhanced the activity of crosslinking reaction.
6) the compatibility and compatibility of epoxy resin and auxiliary materials have been improved.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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