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The advantages of ethylene amine as epoxy curing agent
ethylene amine as a basic fatamine, modified to be used as epoxy curing agent, has long been a mature application in the domestic market.
ethylene amine in the multi-official energy of the amine, there is no spatial resistance, so the reaction activity is very high. The chain segment between the active reaction points is short, and after curing, a highly tightly interlinked mesh structure can be formed
the
. This gives the cured system excellent solvent resistance and mechanical strength.
but at the same time the low molecular weight of ethylene amine, low viscosity, low vapor pressure, resulting in its corrosion of the skin is highly allergic. Their odor is very large, moisture absorption is large, produces al-bleaching and carbonization reaction, needs to be modified to get a good application.
modified, the following properties of ethylene amine are improved:
1, extended application period
2, speed up or decrease the curing reaction speed (slowing the reaction heat release)
3, improve its phase with epoxy resin Tolerance
4, reduced curing agent molecules and air carbon dioxide reaction
5, reduce toxicity, volatility and skin irritation
6, increase the dosage ratio, reduce the use of weighing error
can be applied to epoxy The ethylene amines of resin curing agents are:
dethylene trinamine
typical data indicators:
models: DETA
Appearance: micro-yellow transparent liquid
density (g/ml@20 degrees C): 0.1 945
weight (20 s/20 s): 0.954
content (%): 99
uses: epoxy curing agents, paper additives, pharmaceuticals, water treatment, etc.
triethylene teetamine
typical data indicators:
Model: TETA
Appearance: Light yellow clear liquid
density (g/ml@20 degrees C): 0.974
gravity (20 degrees /20 degrees): 0.983
content ((g/ml@20 degrees C): 0.983
content (%):99
Use: for the manufacture of epoxy resin curing agents, rubber additives, emulsifiers, surfactants, lubricant additives, fuel oil purification dispersants, gas purifiers, cyanide-free plating diffusers, brighteners, descaling agents, softeners, metal chelating agents and synthetic polyamide resins and ion exchange resins.
typical data indicators for tevinyl tetamine
: model
: TEPA
Appearance: light yellow clear liquid
density (g/ml@20 degrees C): 0.992
gravity (0.992 degrees C) 20 degrees/20 degrees): 0.993
content (%): 97
use: for the synthesis of polyamide resins and ion exchange resins, but also for the production of epoxy resin curing agents, additives, promoters, etc.
typical data indicators for
ethylene heptonide:
Model: PEHA
Appearance: Light yellow clear liquid
gravity (20o/20o): 1.0-1.03 1
content (%): 55-85% (refers to PEHA content)
use: for epoxy curing agents, ash-free dispersants, asphalt emulsizers, water treatment, corrosion inhibitors, surfactants, etc.
polyethylene polyamine
typical data indicators:
appearance: yellow transparent liquid
specific gravity (20 degrees / 20 degrees): 1.011
use: for epoxy curing agents, asphalt anti-peeling agents, emulsions, etc.