SU1151564A1 - Adhesive composition - Google Patents

Abstract

Adhesive composition comprising synthetic rubber, chlorine rovanly Nairit or Polyacrylic resin, phenol-formaldehyde oligomer oligoester acrylate, a peroxide initiator, a filler and op ganic solvent of t l ich and w u and in that, for the purpose povsheni strength of attachment of the vulcanized rubber with rubber with heat and temperature resistance of glue-1-o, it contains as a synthetic rubber butadienemethyl-pyridine rubber and in addition a condensation product (p-aminofonyl) of methane, diethanol and formaldehyde at molar ratio NII .1:

Description

one

The invention relates to the field of creating adhesives and is intended to be attached during the vulcanization of rubber and rubber mixtures to each other at various pressures.

The adhesive composition can be used in the industry of rubber products and other industrial sectors that manufacture rubber products and multilayer structures.

Hot-melt adhesives are known based on chlorinated polymers also containing metal oxides, dehydrochlorination stabilizers, nitro compounds, epoxy-containing compounds, etc. i

However, these compositions are intended for fastening elastomers during curing at high pressing pressures (above 10 MLa). In addition, many of them are toxic and require considerable complication of technology when they are used.

Known adhesive composition based on butadiene-methylvinylpyridine rubber, nairite, epoxy resin, vulcanizing agents, leukoparafuksin and targeted additives f.

Known adhesive composition, including, by weight.h .: butadienemethylvinylpyridinovy rubber 5-65, chlorinated rubber 30-93; butadiene nitrile rubber 2-45; filler (zinc oxide, magnesium oxide) J phenol-formaldehyde oligomer 70-100 and other additives h.

However, these adhesives do not provide a sufficiently high strength of the glued-together and heat resistance of the coolant seam.

The closest in technical essence and the obtained result to the invention is the adhesive composition, including butadiene nitrile rubber, chlorinated nairite or perchloroquin resin, phenol-formaldehyde oligomer, oligoether acrylate, peroxide initiator, filler and solvent 4.

.. However, the strength of rubber attachment under operating conditions at elevated temperatures (up to 150 C) does not exceed 0.8-1.0 kN / m, which is in p

151564, 2

Yes, the cases do not satisfy the requirements of production.

The purpose of the invention is to increase the strength of attachment of vulcanized rubber with rubber compounds and heat resistance of the adhesive joint.

This goal is achieved in that the adhesive composition, including synthetic rubber, chlorinated nairite or perchlorovinyl resin, phenol-formaldehyde oligomer, oligoester acrylate, peroxide initiator, filler and organic solvent, contains butadienemethylvinylpyryl as a synthetic rubber. rubber and additionally a condensation product of tri (p-aminophenyl) methane, diethanolamine, a and 20 formaldehyde at a molar ratio of 1: (2-4) :( 2-5) and the components are taken in the following ratio, mass. 4 .:

Butadiene Methyl25 Vinyl Pyridinium Rubber 100

Phenol-formaldehyde oligomer 50-100 Oligoether acrylate 80-140 30 Chlorinated Nairit or perchlorovinyl resin 20-100 Peroxide initiator 8-12 Filler 10-40 Condensation product of three (p-aminophenyl) methane, diethanolamine and

Formalde Guide 10-5 O Organic Solvent 300-1600

As a filler, technical carbon of various DIFFERENT grades, metal oxides, etc. can be used. They do not significantly affect the adhesive properties of the adhesive, but improve its technological properties. The adhesive composition is applied to

substrate and dried 30 min, after

what the bonding surfaces are brought into contact and vulcanized according to the reliance inherent in the vulcanization process of the rubber compounds used.

. The condensation product is prepared as follows. To a reactor (or glue mixer with a capacity of up to 0.5 l) with an agitator3

One mole (298 g) of three (p-aminophenyl) methane is charged, and 2-4 moles (210420 g) of dimethanolamine are gradually added by stirring until a homogeneous pasty mass is obtained. Then, with continuous stirring, 2-5 moles of formaldehyde are gradually introduced as a 37% aqueous solution (180-460 g). Stir at room temperature for 5-10 minutes until a homogeneous product is formed, which is discharged from the mixer or from the reactor and stored at 80 ° C for 2 hours. After drying, the condensation product is dispersed and introduced into the adhesive composition in the required amount. The resulting condensation product is an opaque powder. light lilac color with a melting point of 122-135 C.

Example 1. Preparing an adhesive composition of the composition, wt.: SKN-20MVP-10 rubber - 100; phenol formaldehyde oligomer SF 01OA 80; oligoether acrylate TGM-3 100 chloropolymer (chlorine erit) 60i peroxide initiator (hyperise) 10; filler (technical carbon) 20, condensation product 30; solvent (ethyl acetate) 1200.

Substrate 1 - vulcanized rubber based on butadiene rubber (SCS) rubber.

Substrate 2 is a rubber mixture based on butadiene-nitrile rubber (SKN).

The vulcanization mode min at a specific vulcanization pressure of 0.2 MPa.

Fastening strength is determined according to GOST 6768-75 .. Testing the wire at temperatures of 25, 100, 150 C.

Fastening strength data for all examples are given in the table.

Example 2. The composition of the adhesive is as in Example 1, but the content of the phenol-formaldehyde oligomer is 50 wt.h.

Example 3. The content of phenol-formaldehyde oligomer in the adhesive is 100 parts by weight, the remaining components of example 1.

Example 4. The content of oligoether acrylate in the adhesive is 80 parts by weight, the remaining components of example 1.

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Example 5. The content of oligoether acrylate in the glue is 140 mash, the remaining components of example 1.

Example 6. The content of chlornairite in the adhesive is 20 parts by weight, the remaining components of example 1.

Example 7. The content of chlornairite in the glue is 100 wt.h., the optical components of example 1. Example 8. The content of peroxide initiator in the glue is 8 wt.h., the remaining components of example 1.

Example 9. The content of the peroxide initiator in the adhesive 12 ma.h ,, the remaining components of example 1.

Example 10. The content of the filler is 10 ma.ch., the remaining components of example 1.

Example 11. The content of the filler in the adhesive 40 MAH., The remaining components of example 1.

Example 12. The content of the product of condensation 10 ma.ch., the remaining components of example 1. Example13. The content of the condensation product 50 MAH., The remaining components of example 1.

Example 14. The content of ethyl acetate 300 wt.h., oatalnye components of example 1.

PRI me R 15. The content of ethyl acetate 1600 MAH., The remaining components of example 1.

Example 16. The composition of the glue is similar to that of example 1, but the following were chosen as substrates: substrate 1 — vulcanized rubber based on Nairit CP-50; substrate 2 - rubber mixture based on butadiene-methylvinylpyridine rubber SKMVP-ZOARK.

Example 17. Resin 101 was selected as the phenol-formaldehyde oligomer, taken in an amount of 80 wt.h. As the chloropolymer, perchlorvinyl resin was taken, taken in an amount of 60 wt.h. Dicumyl peroxide was chosen as the peroxide initiator in the amount of 10 m.h. Aerosil 175 was taken as a filler in the amount of 20 ma.h. The remaining components of example 1.

Example 18. The composition of Example 1. As oligoester acrylate, MGF-9 is used - 100 masses, including, as a filler, magnesium oxide — 10 mas.

Claims (1)

ADHESIVE COMPOSITION, including synthetic rubber, chlorinated nairite or perchlorovinyl resin, phenol-formaldehyde oligomer, oligoester acrylate, peroxide initiator, filler and organic solvent, due to the increased strength of the vulcan mixtures and heat resistance of the adhesive joint, it contains butadiene methyl vinyl pyridine rubber and, additionally, a condensation product of tri (p-aminofenip) methane, diethanolamine and formaldehyde when molar ratio .1: (2-4) :( 2-5) and the components are taken in the following research institute, parts by weight: Butadiene methyl vinyl pyridine rubber Phenol formaldehyde oligomer Oligoester acrylate Chlorinated nairite or perchlorovinyl resin Peroxide initiator Filler Condensation product tri (p-aminophenyl) methane, diethanolamine and formaldehyde Organic solvent 100 50-100, 80-140 • 20-100 8-12 10-40 10-50 300-1600>