The cured
epoxy resin having excellent mechanical properties, electrical
properties, chemical resistance, thereby obtaining a wide range of
applications. The curing agent is one of the raw materials required
by the cured epoxy resin, or the epoxy resin does not cure. In order
to meet the requirements of various application fields, using the
appropriate curing agent. Many types of curing agent, are presented
in the following:
Ethylenediamine EDA H2NCH2CH2NH2 MW 60 active hydrogen equivalent 15
colorless liquid per 100 parts by standard resin with a performance
of 6-8 parts: toxic, stimulating odor, volatile, low viscosity, can
be room temperature fast curing. Used for bonding, casting, and
coating. Class amine with molecular weight increases, the viscosity
increases, volatility decreases, toxicity decreases, performance is
improved. They heat capacity, for a short period. In general they
are higher the molecular weight with the amount less effect.
Long-term exposure to fatty polyamines cause dermatitis, steam
highly toxic, great attention should be operating.
Diethylenetriamine DETA H2NC2H4NHC2H4NH2 MW 103 active hydrogen
equivalents of 20.6 per 100 parts of the colorless liquid standard
resin with 8-11 parts. Curing: 20 ° C for 2 h +100 ° C for 30
minutes or 20 ℃ 4 days. Performance: the applicable period 50 g 25 °
C 45 minutes, and a heat distortion temperature of 95-124 ° C,
flexural strength 1000-1160kg/cm2, compressive strength 1120kg/cm2,
the tensile strength of 780kg/cm2, elongation of 5.5%, the impact
strength 0.4 ft - lbs / inch Rockwell hardness 99-108. The
dielectric constant (50 Hz, 23 ° C) 4.1 power factor (50 Hz, 23 ° C)
0.009 volume resistivity of 2x1016 Ω-cm at room temperature curing,
toxicity, heat capacity, for a short period.
Triethylene tetramine TETA H2NC2H4NHC2H4NHC2H4NH2 molecular weight
of 146 active hydrogen equivalent of 24.3 per 100 standard colorless
viscous liquid resin cured with 10-13 copies: 20 ° C for 2 h +100 °
C for 30 minutes or 20 ℃ 7 days. Performance: the applicable period
50 g 25 ° C 45 minutes, and a heat distortion temperature of 98-124
° C, flexural strength 950-1200kg/cm2, compressive strength
1100kg/cm2, the tensile strength of 780kg/cm2, elongation of 4.4%,
the impact strength 0.4 ft - lbs / inch Rockwell hardness 99-106.
Room temperature curing, slightly lower toxicity than
diethylenetriamine, heat capacity, for a short period.
The tetraethylenepentamine TEPA H2NC2H4 (NHC2H4) 3NH2 molecular
weight active hydrogen equivalent of 27 brown liquid 189 per 100
parts of standard resins with performance 11-15 parts Ibid.
Standard resin per 100 parts of polyethylene polyamine PEPA H2NC2H4
(NHC2H4) nNH2 pale yellow liquid with a 14-15 copies of performance:
less toxic, low volatile, for a longer period, and inexpensive.
Diacryl triamine DPTA H2N (CH2) 3 NH (CH2) 3NH2 MW 131 active
hydrogen equivalent 26 of a pale yellow liquid, per 100 parts by
standard resin with 12-15 parts by performance with TETA.
Dimethylamino-propylamine of DMAPA (CH3) 2N (CH2) 3NH2 and
transparent liquid of low viscosity, per 100 parts by standard resin
with 4-7 parts of greater toxicity, having a cured and catalyzes two
reactions, good adhesion properties, the flexible or applicable a
long period.
Diethylaminopropylamine DEAPA (C2H5) 2N (CH2) 3NH2 molecular weight
active hydrogen equivalent per 100 parts of the 65 low-viscosity
transparent liquid standard resin cured with 4-8 parts :60-70 ° C 4
hours 130. Performance: 50 g 25 ° C, the applicable period of 4
hours, heat distortion temperature 78-94 ° C, the compressive
strength 920-1050kg/cm2, tensile strength 480-640kg/cm2 impact
strength of 0.2 ft - lbs / inch Rockwell hardness of 90 - 98. The
dielectric constant (50 Hz, 23 ° C) 3.75 power factor (50 Hz, 23 °
C) 0.007 curing temperature, low temperature performance.
Trimethyl hexamethylene diamine TMD (H2N) 2 (C6H9) (CH3) 3 as a
colorless liquid cold curing, long pot life, low toxicity. 21 per
100 standard resin curing: 80 ° C for 1 hour +150 ° C 2 hours.
Performance: of 400 g of 25 ℃ 50 minutes or 50 ℃ 10 minutes, Martin,
heat 92 ° C, the flexural strength 1150kg/cm2 impact strength
20Kg-cm/cm2 TG Δ 0.0009 (23 ° C, 100C / S), surface resistivity of
5.4 x1011Ω (300V) volume resistance 9x1015Ω.cm (300V) curing
temperature, low temperature performance.
II base triamine H2N (CH2) 6 NH (CH2) 6NH2
Diamine modified material AMINE248 Formula unknown transparent
liquid Viscosity 25 ℃ 1000-3000cps per 100 standard resin cured with
4-8 copies at room temperature -100 ℃. Less toxic, flexible.
Been diamine adduct CH-2, L2505 MF Unknown amine value of 160-210
and transparent liquid of low viscosity, per 100 parts by standard
resin with 65 parts of CH3 amine value of 400-500 per 100 parts of
the standard of the transparent liquid of low viscosity resin with
60 parts
Have diamine HDA H2N (CH2) 6NH2 molecular weight of 116 active
hydrogen equivalent the 29 Flake colorless crystalline melting point
of 42 ℃ per 100 standard resins 12-15 were toxic, can be cured at
room temperature, but not good. The pot life is shorter.
Trimethyl diamine molecular weight of 158 per 100 standard resin the
20-25 copies curing: 20 ° C for 2 h +100 ° C for 30 minutes or 20 ℃
7 days. Performance: the applicable period 50 g 25 ° C 45 minutes,
the thermal deformation temperature of 105 ° C, the flexural
strength 1150kg/cm2, the tensile strength of 650kg/cm2, elongation
of 4.4%, the impact strength of 0.4 ft - lb / inch. Dielectric
constant (50 Hz, 23 ° C) 4.0 power factor (50 Hz, 23 ° C) 0.001
volume resistivity of 9x1015 Ω-cm
Diethylamine DEA HN (C2H5) 2 MW 73 active hydrogen equivalent of 73
as a colorless liquid having a cured and catalytic reaction of the
the standard resin per 100 parts 12 parts.
Polyether diamine H2N (CH2) nO (CH2CH2O) mNH2
