SU529195A1 - Epoxy composition - Google Patents

Description

(54) EPOXY COMPOSITION

This invention relates to the field of producing epoxy compositions that have enhanced adhesion to metals and are suitable for use as sealing, casting impregnating compounds, etc.

Known epoxy compositions containing epoxy Dianova tampon and hardener - a complex of metal halide with arkvtichesky amine.

A disadvantage of the known compositions is low adhesion to steel.

The purpose of the invention is to increase the adhesion of the composition to steel.

To do this, as a hardener, the composition contains a complex of cadmium chloride with N-acetyl-T1-phenylenediamine with the following ratio of components, weight. h:

Epoxy Dianova resin 83-86

Cadmium chloride complex

with N-acetyl-p-phenylene-

diamine 14-17.

With V ep 1. K83 wt.% ED-20 epoxy resin (epoxy groups 20, 5), 17 wt. % of complex of x.porid kami with N-acetyl-p -phenylenediamine and stirred at 100-110 C for 2 hours. The reaction mixture is poured into heated forms and thermostatic at 150-160 h for 3 hours.

Pr and NT about p 2. An ethoxide composition is prepared as described in example 1 with the ratio of the initial compoters, weight. %:

ED - 2085

Complex15

about

It is cured at 150 G R per hour.

P and M er 3. Preparation, pouring and curing are carried out according to example 1. The initial KONUioHeHToe composition, wt.%. ED - 2086

Complex1-1

The properties of the cast standard samples are shown in the table. one

M2

Viability, month

The output of the crosslinked polymer,% 8.8

Thermal stability, C

Water absorption,% per day

Strength limit (in kg / cm) on a separation to

become

aluminum

brass Comparative characteristics of some properties of a component based on epoxy resin ED-20, hardened with known

Table 1

12

12

94

94

205

0.18

OD 6

0.209

405

505

380

230

200

254

19O

202

18O complex compounds of metals with amines and them. acetyl derivatives are presented in Table 2.

Vitality at 2 ° C, month12

The output of the crosslinked polymer,%

97

Water absorption,% per day

OD

Thermostability, C

560

G / cm

Tensile Strength 287

(in kg / cm) O, O08

4.0

steel 11-phenylenediamine

 aaethyl-p-phenylendedial As can be seen from the table, a composition based on a complex of CdCfcj with ADPD has the same properties as the known epoxy compositions based on complexes of zinc and cadmium with p-phenylenediamine (in gabl, 2 compositions I and II ). However, the tensile strength for a uniform lead to m & The talles in this composition are increased in comparison with the known. A complex of zinc chloride with N-acetyl-p-pygnylene diamine can also be used as a curing agent (Table 2, composition 1P). However, the thermal stability of the three-dimensional polymer crosslinked by this complex, according to DTA, is 2 O С lower than in comparison with the composition solidified by the complex of cadmium chloride O, N-acetyl-p-phenylenediamine and ЕЖ1 (This is 185 ° С.

table 2

12

more

94

96

0.21

0.16 20S

185

1108

1200

505

560 0.0059 О, ОО9

4.12

4.23

Claims (1)

4.24 As the epoxy component in the epoxy {composition, other epoxy resins can be used (ED-6, 3-4O, EC - etc.) as in | combination with modifiers made for epoxy compositions; plasticizers, fillers, and without them. Thus, the use of this hardener allows for 12 months. to obtain the viability of the composition with high tensile strength on a uniform O1 trench 5OO-56O kg / cm. Claims An epoxy composition comprising an epoxy resin and a screw bead is a complex of a metal halide with an aromatic amine, characterized in that, in order to achieve adhesion to steel. 13 kichostBO hardener, it contains cadmium chloride cadmium chloride with N-acetyl-p-phenylenediamine in the following ratio of components, in weight, h,: Epoxy cyan resin83-86 Cadmium chloride complex with N-acetyl-p-phenylenediamine 14-17.