SU697545A1 - Glue - Google Patents

Description

(54) GLUE

This invention relates to the production of adhesives based on epoxy resin and low molecular weight carboxylate rubber as a modifier, which is hardened by aliphatic amines. Such adhesives are used to attach rubber to metal and to each other. The closest in technical essence and the achieved result to the proposed is glue, including epoxy resin, liquid carboxylate nitrile-butadiene rubber and polyethylene polyamine 1 .; A disadvantage of the known adhesive is the low strength of attachment of rubber to rubber and rubber to metal. The purpose of the invention is to increase the protrusion of rubber to rubber and rubber to metal. The purpose of the invention is achieved in that the adhesive, including epoxy dia, a new resin, liquid carboxylate Zutadiene-nitrile rubber and polyethylene polyamine, additionally contains 2,4,4-triaminobenzanilide in the following ratio of components, weight .4. : Epoxy Dianova. resin100-110 Liquid carboxylate nitrile-butadiene rubber20-200 Polyethylenepolyamine 10-11 2, 4,4-Triaminobenzanilide, 5-1.0. In tab. 1 shows the formulations of the known and proposed glue. The glue is prepared according to the following technology. Initially, weights of epoxy resin and liquid low molecular weight carboxylate rubber SKN-2b-1 are weighed in, then these components are thoroughly mixed until a homogeneous mixture is obtained. Separately, a solid crystalline substance 2,4,4-diaminobenzanilide is introduced into the hardener-polyethylene polyamine - in the amounts indicated in Table. 1, The complete dissolution of the substance 2,4,4-triaminobenzanilide in the hardener polyethylene glycol produced in 48-72 hours, depending on its quantity. Before use, the whole composition. Parts; mix and mix thoroughly. Using these adhesives, rubber is attached, the compositions of which are listed in Table. 2, to the surface of the metal from Art. 3, Vulcanization of rubber samples is carried out in a steam vulcanization mill according to standard technology. Curing the clerk after inserting the screwdriver into them is carried out for 72 hours at 20 ° C. The data on the strength of the bond (adhesion) of rubbers indicated by the marks using the known and proposed adhesives to metal st. G according to GOST 209-75 are presented in table. 3. Introduction to the composition of the glue 2,4,4 -tri aminobenzanilide in the amount of less than 0.5 weight, h, per 100 weight.h. The resin gives a slight increase in additive,. more than 1% practically does not cause the slightest increase in the strength of fastening, and in some cases even causes its reduction (see Table 4.5) compared with adhesives containing the specified optimal amount of 2, 4, 4 -triaminobenzanilide (see Table 1 3).

100

Epoxy resin

Low molecular weight carboxylate rubber

FGD

Actinap

Zinc oxide

Altax

Rosin

Kaolin

Oil PN-6

Talc

Oleic acid

Soot TM-15

Vaseline oil

Para-oxineozone

105

110

100 100 100

1.21 5.98

5.00

1.36

 1.00

03.45

1.00 5.00 22.72

4.14

6.36 1.00 The compositions of adhesives with the minimum and the maximum additions of 2,4,4-triaminobenzanilide are given in table 4. In tab. 5 shows the bond strength of rubber to metal with minimum and maximum additions of 2,4,4-triaminobenanilide. From tab. 3, 5 it follows that only with the introduction of 2,4,4-diaminobenzanilide in the composition in the amount of; 0.5-1.0 weight.4. Provides increased strength of attachment to metal of rubber of different composition and thereby increases the reliability of equipment operation with a protective rubber coating. The adhesive can be used to glue rubber between itself and with metal in chemical engineering plants and other industries that produce products using epoxy adhesives in the process. Table 1

Famous Offered

Epoxy resin

Liquid low molecular weight carboxylate rubber SKN-26-1

Polyethylenepolyamine

2,4,4-triaminobenzanilide

Composition

Table 3

2.8

15.5

Table

100

100

70 10

70 10

3.0

2.5

Table

Adhesion, kgf / cm

Rubber stamps 175;, 7 G

2566.5