SU1634681A1 - Method for modifying rubber surface - Google Patents

Abstract

The invention relates to the rubber industry, in particular to methods of modifying the surface of rubber, and can be used to modify rubber based on ethylene-propylene rubbers pered by gluing. The invention improves the strength of attachment of the retina with cold curing adhesives due to the fact that in the modification method, which includes treatment with a modifier ai ent - 2,6 - dn - tri - butyl anthraquinone (BAC) and ultraviolet irradiation, in a mixture by haloaromatic compound of the general formula where X is 0; a Y - Br or X - C (CH3) L; Y - OH, in the amount of 0.2-2.5 g / m2 of each component with their ratio in a mixture of 1: (1-5). 1 tab.

Description

The invention relates to the rubber industry, in particular, to a method for modifying the surface of a rubber, and can be used to modify rubber based on ethylene-propylene rubbers before gluing.

The purpose of the invention is to increase the strength of attachment of rubber with cold curing adhesives.

PRI me R J. On the surface of a rubber sample based on ethylene-propylene rubber of the following composition, wt.h .:

SKEP100

Sulfur0.4

Dicumyl peroxide 3,0

Zinc Oxide3.0

PM-7550.0 carbon black is applied with a brush to a solution of 2,6-day-tert-butyl-anthracion and decabromo dif-nyl oxide at a rate of 0.25 g / m2 each, dried, and then irradiated with light DTH-1000 lm for a minute 20 cm (energy exposure is 1.8 10 J / mg). Glue 51-K-25 of the following composition is applied to the irradiated surfaces, wt. a solution of leukonate in methylene chloride with a concentration of 20Z - 5.

ABOUT

from 4

Ltd

After applying the adhesive to the surface, they are combined and kept at room temperature for 5 days. The strength of the adhesive compound is tested according to GOST 6768-75.

Examples 2 and 3 Analogously to example I, modification, bonding and testing of rubber samples based on EPDM are carried out at irradiation times of 2 and 4 minutes (energy exposure 3.6-104 and 7.2-10 J / m).

Examples AiZ (cont.). Analogously to Example 1, solutions of individually taken 2,6-di-tert-butan-anthraquinone or others were applied to the surface of EPDM-based rubber at a rate of 0.25 g / m2, irradiated, glued, and tested.

PRI me R 6 (contro). According to Example 1, the EPDM-based rubber surface is treated with a solution of 2,6-day-tert-butyl-anthraquinone and decabromodiphenyloxide, and then the rubber is bonded without prior irradiation wire.

Examples are 7-9. On the surface of the rubber sample on the basis of the terpolymer of ethylene, propylene and dicyclopentadiene EPDM of the following composition, mass,:

SKEPT-40100

Oil MVP15

Soot PM-7560

Stearic acid

Kaptaks0,5

Tiuram1,5

Zinc Oxide5

Sulfur2

Brush a solution of 2,6-di-tert-butyl-anthraquinone and tetrabromodiphenyl-propane at the rate of 2.5 g / m2 each, dry and then irradiate for 0.25-4 minutes with a DTR-1000 lamp (energy exposure is 4 , 5 "103-7, Dk / m2). 51-K-25 glue is applied to the surfaces to be irradiated, the surfaces are joined and kept at room temperature for 5 days.

Examples 10 and ii. Similarly to examples 7-9, modification of rubber samples on the basis of EPDM is carried out by processing 2,6-di-tert-butyl-anthraquinone and TetraProm-diphenylol-propane individually taken and followed by irradiation.

five

Q

five

0 5

0

45

0

five

Example 12: The surface of a rubber sample based on EPDM without irradiation with reagents was irradiated with light of a DPT-JOOQ lamp for 1 min, then glue was applied, glued, and tested as in Examples 9-J1.

Examples 13-15. A solution of 2,6-di-tert-butyl-anthraquinone (0.2 g / m) and decabromodiphenyloxide (1.0 g / i2) is applied on the surface of rubber on the basis of EPDM, analogously to example 1, dried and irradiated for 1-4 minutes. 51-K-10 VM glue (TU 405467-84) of the following composition is applied to the irradiated surfaces: component A - 23 + 2% solution in rubber mixture in ethyl acetate (butadiene-acrylonitrile-vinylpyridine rubber SKN-20-MVP-10) 100 parts by weight, metaphenylene diamine 80% by weight. Cho, white carbon black OS-100 100 parts by weight, component B-50% solution of ED-20 resin in ethyl acetate; Component B is a 7% solution of Vitan (a copolymer of methyl methacrylate and methacrylic acid) in ethyl acetate.

The ratio of components in the adhesive composition, mac. Hours: A 10, B 12, C 19.

After applying the adhesive, the surfaces are combined and dried at room temperature for 3 days.

Example 16. A solution of 2,6-di-tert-butyl-anthraquinone (0.2 g / m) and decabromodiphenyloxide (0.6 kg / m2) similar to those of examples 15-17 is applied to the surface of the spring on the basis of EPEPT, dried and irradiated in for 1 min, put glue 51-K-10 VM and incubated for 3 days.

Examples 17-19. Carried out according to a known method.

The test results according to GOST 6768-75 are given in the table.

Formula nzob R. e shadow

The method of modifying the rubber surface based on ethylene-propylene rubber, which includes treatment with a modifying agent 2,6-di-tert-butyl anthraquinone and ultraviolet irradiation, characterized in that, in order to increase the strength of rubber attachment with cold curing adhesives, -di-tert-butylanthraquinone is used in a mixture with a galloidaromatic compound of the general formula

8t. 8h

where X - 0, and Y - Br or X - C (CH,) 2, a Y - OH, in the amount of 0.2-2.5 g / m2 of each component when the ratio is 1: (1-5) .

M Sept 2,6-di-tert-butnl-anthraquinone Lrka romdiphenyl0, 25

5I-K-25

8,8

Cogeenonium

Claims (1)

A method for modifying the surface of rubber based on ethylene propylene rubber, comprising treating with a modifying agent 2,6-di-tert-butylanthraraquinone and irradiating with ultraviolet light, characterized in that, in order to increase the strength of the rubber fastening with cold-cured adhesives, 2,6-di tert-butylanthraquinone is used in admixture with a haloaromatic compound of the general formula Example I Type Rubber Modifiers for Re-Eine 1634681 ₆ where X is 0, and Y is Br or X is C (CH,) ₂ , and Y is OH, in an amount of 0.2-2.5 g / m ^{2 of} each component, with their ratio in the mixture 1: (1 -5). Qty Time Type of Other Character ext irradiation., glue nost raeruiennya Wok MIN kN / m g / m * one 2 m scrap 2,6-di-tert-butylanthraquinone De c a b ro md if n and l oxide Also 0.25 0.25 0.25 one 2 5I-K-25 5I-K-25 8.8 8.3 Cohesive _m_ 3 0.25 four 5I-K-25 10.6 4 (counter) skap 2,6-dn-tert * butyl- Adhesion anthraquinone 0.25 one 51-K-25 2.6 ny 5 (counter) De to a bromdife 11 ny - oxide 0.25 one 51-K-2 5 0.8 - b (counter) _m_ 2 ₁ 6-Di-tre Mr. Bu ι ιυι Antraquinone De to Abromdiphene Il * 0.25 0 51-K-25 0.5 _ and_ oxide 0.25 7 skapt 2,6-Dn-tert-buz ylantrachnnon Te trabromdmfsnil- 0.25 5I-K-25 3.6 Mixed olpropai 2.5 J 8 Also 2,5 one 5I-K-25 5.2 9 _ and _ 2,5 four 51-K-25 10.0 Cohesive 10 2,6-dn-gre t-butyl (counter) anthrachnon 2,5 one 5I-K-25 0.8 Adhesive ) one Tetrabromodiphenyl (counter) propane 2,5 one 5I-K-25 0.5 _ ^m - 12 (counter) Without additives - one 5I-K-25 0.2 _n_ 13 skapt 2,6'Di-tert-butyl “anthraquinone Decabromodiphenyl” 0.2 one 5I-K-IOBM 5.7 Mixed oxide 1.0 fourteen _n_ Also 1, about 2 51-K-YuVM 7.0 fifteen •.about four 51-K-YuVM 12.0 Cohesive 16 2.6 ~ Dee “Tret’butnl" Anthraquinone De a bomd ife n il - 0.2 oxide 0.6 four 51-K-YuVM 9.5 • ^g * - 17 2,6-Di * tert-butl anthraquinone 2,5 0.25 5I-K-25 0.5 Adhesive eighteen Also 2,5 four 51-K-25 19 -AND- 1,2 four 51-K-YuVM 2.0