The types of curing agent

Curing agent is to make substance solidification processing AIDS. Such as curing agent for epoxy resin curing one of the necessary raw materials, otherwise will not curing epoxy resin. As to meet the needs of various applications, you should use the corresponding curing agent.

The types of curing agent, are presented below:

Multiple amine fat

ethylenediamine

EDA H2NCH2CH2NH2 60 active hydrogen equivalent molecular weight 15 colourless liquid Every 100 standard resin with 6-8

Performance: toxic, stimulating smell, volatile, low viscosity, fast curing at room temperature. Used for bonding, pouring and coating. The amine with the increase of molecular weight, viscosity increases, the volatile and toxic decreases, and performance improvement. But they put a big heat, it is suitable for the shorter period. In general the smaller the higher the molecular weight they affected by the match the amount. Long-term exposure to multiple amine fat can cause dermatitis, their steam highly toxic, must be very careful when operating.

Divinyl three amine

DETA H2NC2H4NHC2H4NH2 molecular weight 103 active hydrogen equivalent 20.6 colourless liquid

Every 100 standard resin with 8 to 11. Curing: 20 ℃ + 100 ℃ for 30 minutes or 2 hours 20 ℃ for 4 days. Performance: the applicable period of 50 grams of 25 ℃ for 45 minutes, thermal deformation temperature of 95-124 ℃, the bending strength of 1000-1160 kg/cm2, the compressive strength of 1120 kg/cm2, the tensile strength of 780 kg/cm2, elongation is 5.5%, the impact strength 0.4 ft - pounds/rockwell hardness of 99-108. Dielectric constant (50 hz, 23 ℃), power factor 4.1 (50 hz, 23 ℃) 0.009 volume resistance 2 x1016 Ω - cm at room temperature curing, toxicity, heat quantity, suitable period is short.

Triethylene tetramine TETA H2NC2H4NHC2H4NHC2H4NH2

The molecular weight of 146 active hydrogen equivalent 24.3 colorless viscous liquid Every 100 standard resin with 10 to 13
Curing: 20 ℃ + 100 ℃ for 30 minutes or 2 hours 20 ℃ for 7 days. Performance: the applicable period of 50 grams of 25 ℃ for 45 minutes, thermal deformation temperature of 98-124 ℃, the bending strength of 950-1200 kg/cm2, the compressive strength of 1100 kg/cm2, the tensile strength of 780 kg/cm2, elongation is 4.4%, the impact strength of 0.4 feet - pounds per inch Rockwell hardness of 99-99. Room temperature curing, toxicity was slightly lower than divinyl three amine, put a big heat, it is suitable for short.

Four ethylene amines TEPA five

H2NC2H4 (NHC2H4) 3 nh2 molecular weight 189 active hydrogen equivalent 27 brown liquid Every 100 standard resin with 11 to 15

The above performance.

More ethylene polyamine PEPA H2NC2H4 NHC2H4 nNH2 light yellow liquid Every 100 standard resin with 14 to 15

Performance: the lower toxicity, low volatile, applicable period is longer than the other.

Two propylene three amine DPTA H2N (CH2) 3 NH (CH2) 3 nh2




Chinese name: Diethyl toluene diamine(DETDA)

Physical and chemical properties: light yellow transparent liquid, slightly soluble in water, soluble in alcohols, ethers, ketones and other polar organic solvents, and polyether, polyester polyol compatibility.
Density 1.022

Viscosity (20 ℃) ??mPa·ss290±10

Pour Point ℃-9

Boiling point of310°C

Flash Point°C161.1°C


Molecular weight of 131 active hydrogen equivalent 26 light yellow liquid Resin with 12 to 15 per 100 standard performance with TETA.
Dimethylamino propylamine DMAPA

(CH3) 2 n (CH2) 3 nh2 low viscosity liquid Every 100 standard resin with 4 to 7

Toxicity is larger, with curing and two catalytic reaction, good adhesion, flexibility, long shelf life.

Diethylamine base propylamine DEAPA (C2H5) 2 n

(CH2) 3 nh2 molecular weight 130 active hydrogen equivalent 65 low viscosity liquid Every 100 standard resin with 4 to 8

Curing: 60-70 ℃ for 4 hours. Performance: the applicable period of 50 grams of 25 ℃ for 4 hours, heat distortion temperature 78-94 ℃, 920-1050 kg/cm2, compressive strength tensile strength of 480-640 kg/cm2, the impact strength of 0.2 feet - pounds per inch Rockwell hardness of 90-90. Dielectric constant (50 hz, 23 ℃), power factor 3.75 (50 hz, 23 ℃) 0.007 medium temperature cure, low temperature performance is good.

Three methyl six methylene diamine TMD (H2N) 2 (C6H9) (CH3) 3 colourless liquid

Cold curing, long period, low toxicity. Every 100 standard resin with 21 curing: + 80 ℃ 80 ℃ for 1 hour, 2 hours. Performance: the applicable period 400 grams of 50 minutes 25 ℃ and 50 ℃ for 10 minutes, Martin heat resistant 92 ℃, bending strength, 1150 kg/cm2, the impact strength of 20 kg - 0.0009 cm/cm2 tg delta (23 ℃, and 100 c/S)

Surface resistance 5.4 x1011 Ω (300 v) volume resistance 9 x1015 Ω. Cm (300 v) in the curing temperature, low temperature performance is good.

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