Adhesive composition

FIELD: chemistry.

SUBSTANCE: adhesive composition contains polychloroprene rubber nairit DP, butylphenol formaldehyde resin 101 K, water, zinc oxide, magnesium oxide and an organic solvent which is a mixture of ethylacetate and nefras. The composition also contains 23 KNTS grade polycaproamide fibre ground beforehand, with the following ratio of components in pts.wt: polychloroprene rubber nairit DP - 90.0, butylphenol formaldehyde resin 101 K - 90.0, water - 3.0, zinc oxide - 5.0, magnesium oxide - 11.0, said organic solvent - 800.0, ground 23 KNTS grade polycaproamide fibre - 1.0-5.0.

EFFECT: invention increases strength when gluing together vulcanised rubber.

2 tbl

 

The invention relates to adhesive compositions based on polychloroprene rubber and can be used in the rubber industry for bonding vulcanized rubbers on the basis of different rubbers to each other.

Known adhesive composition comprising a chloroprene rubber, thiuram, zinc oxide, as the resin product of co-condensation of phenol acetaldehyde and acetonaphthone and the solvent (USSR Author's certificate No. 1579920, CL C09J 111/00; publ. 23.07.90). As solvent a mixture of ethyl acetate and petrol.

However, this adhesive composition does not provide a sufficiently high strength for bonding articles of vulcanized rubber.

Known adhesive composition comprising polychloroprene rubber, epoxy resin, low molecular weight on BNR rubber, tertiary amine, and a solvent (USSR Author's certificate No. 685673, CL C08L 11/00; publ. 15.09.79).

However, this adhesive composition has a low strength bonding of rubber products based on various rubbers.

Known adhesive composition comprising polychloroprene rubber, butylbenzaldehyde resin, a copolymer of styrene and piperylene, rosin, esterified with glycerol; pine rosin, diphenylguanidine, 2,2-dimensionalised, zinc oxide, magnesium oxide, organic dissolve the spruce (U.S. Pat. 2028358, Russia, MKI6C09J 111/00; publ. 09.02.95).

However, this adhesive composition, although it has a similar composition, used to glue products from ferrites.

Closest to the invention to the technical essence is the glue SU (TU 381051760-89), which includes (parts by weight): polychloroprene rubber Nairit DP - 90,0, butylbenzaldehyde resin C - 90,0, zinc oxide - 5.0, magnesium oxide - 11,0, water - 3,0, organic solvent - 800,0. As the organic solvent, a mixture of nefras and ethyl acetate in a percentage ratio of 50:50.

However, this adhesive composition (although it is widely used because of its low cost) does not provide a sufficiently high strength for bonding vulcanized rubber (attainable shear strength for bonding vulcanized rubber-based composition of polyisoprene rubber (SKI-3) does not exceed 0.43 MPa).

Task: development of the composition of the adhesive composition having increased strength in bonding vulcanized rubber between them.

The technical result is to increase the strength of the bonding vulcanized rubber between them.

The technical result is achieved in that the adhesive composition comprising polychloroprene rubber Nairit DP, butylbenzaldehyde resin C, water, hydroxy what is zinc magnesium oxide, an organic solvent which is a mixture of ethyl acetate and nefras, and it further comprises a pre-shredded polycaproamide fiber brand 23 science and technology committees, in the following ratio of components, parts by weight: polychloroprene rubber Nairit DP - 90,0, butylbenzaldehyde resin C - 90,0, water - 3,0, zinc oxide - 5.0, magnesium oxide - 11,0 specified organic solvent - 800,0, chopped polycaproamide fiber brand 23 science and technology committees - 1,0-5,0.

Polychloroprene rubber Nairit DP (TU-6-01-1319-85) is the main film-forming adhesives-solutions.

Butylbenzaldehyde resin C (TU-60004691277193-97).

Curing group: zinc oxide (zinc white GOST 202-84), magnesium oxide (burnt magnesia GOST 844-79) was previously used in the adhesive compositions (Kardashov D.A., Petrov A.V. Polymer adhesives. M.: Chemistry, 1983).

Organic solvent: a mixture of ethyl acetate (GOST 8981-78) and nefras (GOST 3840167109-92).

Crushed polycaproamide fiber brand 23 science and technology committees - 187 Tex - size of 1-3 mm is obtained by passage through an extruder.

When used in adhesive compositions crushed polycaproamide fiber brand 23 science and technology committees significantly increase the adhesion properties of the adhesive composition. This occurs by increasing the cohesive strength of the adhesive film. In addition, the durable increase the STI clutch glue with rubber occurs due to the effect of "mechanical jamming" crushed polycaproamide fibers in the array bonding of vulcanized rubbers.

This explains the increase in strength when bonding vulcanized rubber between them.

The adhesive composition is prepared as follows. In the beginning prepare a rubber compound S-1-GN - a mixture of plant APS, magnesium oxide, zinc oxide (ETP 8857-91) in the rubber mixer for 10 minutes, the temperature of the mixer gradually increases as you enter the components of the mixture) from 50C to 85C. After discharging the mixture at a temperature of 105C is carried out by listomania for 5 minutes Then heated rubber mixture with part of the solvent (about 0.1 of the total amount of the solvent is loaded into clearesult. Remaining solvent together with other ingredients of the adhesive composition butylbenzaldehyde resin, water, shredded polycaproamide fiber brand 23 science and technology committees loaded portions in clearesult as swelling rubber compound. Total time clemmesen is 4.5-5 hours, with the introduction of crushed polycaproamide fiber brand 23 science and technology committees may be carried out after preparation of the adhesive composition on the basis of the remaining components.

An example of the preparation of the adhesive composition. In clearesult containing prepared in a known manner naritaweg glue SU (TU 381051760-89), comprising polychloroprene rubber Nairit DP, butylbenzaldehyde resin K, OK the ID of zinc, magnesium oxide, water and a specified organic solvent, enter the calculated amount of crushed polycaproamide fiber brand 23 science and technology committees and stirred the contents for 5-10 minutes until a homogeneous mass.

Receive adhesive compositions 1-3, the compositions of which are given in table 1. The adhesive is a light gray liquid. Adhesive tech, well put on the rubber surface. Have been investigated by various content crushed polycaproamide fiber brand 23 science and technology committees (table 2).

The stated limits of crushed polycaproamide fiber brand 23 science and technology committees 1,0-5,0 due to the fact that when you increase or decrease the indicated dosages bond strength when bonding is reduced.

Comparative tests of strength properties of adhesives in all variants of the claimed composition and the prototype for bonding vulcanized rubber-based composition of polyisoprene rubber (SKI-3), on BNR rubber (SKN-18M) and chloroprene rubber (Neoprene AU) are given in table 2. For the comparative tests was prepared 3 types of compositions (according to the method described in the example) and the composition of the prototype presented in table 1. The proposed composition was studied on the adhesion strength shear achieved through keeping under load of 2 kg at room temperature is f (20C) within 24 hours.

Adhesion shear was determined on a tensile testing machine MPC-250 (RTM 1.2.126-88). Technology pasting the following samples. One-time application of the prepared adhesive to the prepared surface, drying the adhesive film at room temperature (20C) for 1-2 minutes, then made a tight pressing of the bonding surfaces.

As can be seen from table 2, the proposed adhesive compositions provide enhanced strength properties of adhesive joints in comparison with the prototype. So the shear strength of the adhesive joint for bonding vulcanized rubber-based Neoprene AC prototype is 0.75 MPa, and using the proposed modifier 1.20 MPa.

Thus, as can be seen from table 2, when using the proposed adhesive compositions crushed polycaproamide fiber brand 23 science and technology committees within these limits increases the strength of bonding of the articles of vulcanised rubber other on the basis of various rubbers, due to the participation of this modifier in improving the adhesion properties of the adhesive.

Table 1
ComponentThe content of components in the composition, parts by weight
13the placeholder
Polychloroprene rubber Nairit DP90,090,090,090,0
Butylbenzaldehyde resin C90,090,090,090,0
Water3,03,03,03,0
Zinc oxide5,05,05,05,0
Magnesium oxide11,011,011,011,0
The organic solvent (a mixture of ethyl acetate and nefras in percentage ratio of 50:50)800,0800,0800,0800,0
Crushed polycaproamide fiber brand 23 science and technology committees1,03,0 5,0

Table 2
The type of substrateThe shear strength, MPa
The indicator for the compositionThe prototype SA
123
SKI-30,690,700,750,43
SKN-18M0,680,640,630,61
Neoprene AC1,200,830,810,75

It is established that the reason for increasing the adhesion performance of the adhesive compositions is to increase cohesive strength of the adhesive film when the introduction of the modifier, and partial penetration of chopped fibers in the superficial layers of rubber.

Technical and economic effect obtained from the use of the adhesive composition is in t is m, that its use can significantly improve the quality fastening products, of vulcanised rubber other on the basis of different rubbers to improve the technological parameters of the bonding process.

The adhesive composition comprising polychloroprene rubber Nairit DP, butylbenzaldehyde resin 101 To, water, zinc oxide, magnesium oxide, organic solvent which is a mixture of ethyl acetate and nefras, characterized in that it further comprises a pre-shredded polycaproamide fiber brand 23 science and technology committees in the following ratio of components, parts by weight:

Polychloroprene rubber Nairit DP90,0
Butylbenzaldehyde resin 10190,0
Water3,0
Zinc oxide5,0
Magnesium oxide11,0
Specified organic solvent800,0
Crushed polycaproamide fiber brand 23 science and technology committees1,0-5,0



 

Same patents:

FIELD: chemistry.

SUBSTANCE: adhesive composition contains polychloroprene rubber nairit DP, butylphenol formaldehyde resin 101 K, water, zinc oxide, magnesium oxide and an organic solvent which is a mixture of ethylacetate and nefras. The composition also contains phosphorus-boron-containing methacrylate as a modifier, with the following ratio of components in pts.wt: polychloroprene rubber nairit DP - 90.0, butylphenol formaldehyde resin 101 K - 90.0 water - 3.0, zinc oxide - 5.0, magnesium oxide - 11.0, said organic solvent - 800.0, said phosphorus-boron-containing methacrylate - 3.0-10.0.

EFFECT: invention increases strength when gluing together vulcanised rubber.

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EFFECT: invention increases strength when gluing together vulcanised rubber based on different types of rubber.

2 tbl, 10 ex

FIELD: chemistry.

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EFFECT: simple formulation of the adhesive composition, high strength when gluing vulcanised rubber with metal.

2 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a method of gluing vulcanised rubber to each other and can be used in rubber industry. The method of gluing different types of vulcanised rubber to each other involves application of polychloroprene rubber based glue onto vulcanised rubber surfaces to be glued and then bringing the surfaces into contact. The base of the polychloroprene glue used is nairit NT or nairit DP combined with butyl phenolformaldehyde resin in 88NT or 88SA adhesive. Before application onto the surface, the adhesive is mixed with a trichloroethylphosphate or trichloropropylphosphate modifier in amount of 0.05-2.0 pts. wt per 100 pts. wt of the adhesive, and after application, the adhesive film is dried at room temperature for 1-2 minutes and the surfaces to be glued are brought into contact under a load for 24 hours.

EFFECT: increased strength of the glue joint when gluing vulcanised rubber and simplification of the gluing process.

2 tbl, 2 ex

FIELD: chemistry.

SUBSTANCE: invention relates to adhesive compositions based on chloroprene rubber and can be used in the rubber industry when gluing together vulcanised rubber. The adhesive composition contains polychloroprene rubber nairit DP, butylphenolformaldehyde resin 101 K, water, zinc oxide, magnesium oxide, a modifier, an organic solvent which is a mixture of ethylacetate and petroleum solvent. The modifier used is methylphosphite borate. Components of the composition are in the following ratio in pts. wt: polychloroprene rubber nairit DP - 90.0, butylphenolformaldehyde resin 101 K - 90.0 water - 3.0, zinc oxide - 5.0, magnesium oxide - 11.0, said organic solvent - 800.0, methylphosphite borate - 10.0-3.0.

EFFECT: invention increases strength when gluing together vulcanised rubber based on different types of rubber.

2 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: invention relates to adhesive compositions based on polychloroprene rubber and can be used in the rubber industry when gluing together vulcanised rubber. The adhesive composition contains polychloroprene rubber nairit DP, butylphenolformaldehyde resin 101 K, water, zinc oxide, magnesium oxide, an organic solvent which is a mixture of ethylacetate and petroleum solvent and a modifier. The modifier used is trichloroethylphosphate or trichloropropylphosphate. Components of the composition are in the following ratio in pts. wt: polychloroprene rubber nairit DP - 90.0, butylphenolformaldehyde resin 101 K - 90.0 water - 3.0, zinc oxide - 5.0, magnesium oxide - 11.0, said organic solvent - 800.0, said modifier - 1.0-20.0.

EFFECT: invention increases strength when gluing together vulcanised rubber based on different types of rubber.

2 tbl, 1 ex

FIELD: chemistry.

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2 tbl, 1 ex

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EFFECT: invention increases strength when gluing together vulcanised rubber based on different types of rubber.

2 tbl, 1 ex

FIELD: chemistry.

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2 tbl, 2 ex

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2 tbl, 2 ex

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4 tbl

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5 tbl

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4 cl, 1 tbl, 4 ex

Polymer composition // 2291884

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SUBSTANCE: polymer composition suitable for use in various national economy branches, in particular in cable industry, is constituted by, weight parts: chloroprene rubber or its combination with butadiene-nitrile rubber, 100; zinc oxide as vulcanization agent, 1-5; vulcanization accelerator selected from group: sulfur, thiuram, diphenylguanidine, Captax, or a mixture thereof, 1.0-3.25; vulcanization activator selected from group: magnesium oxide and stearic acid, 3.5-10.0; stabilizer: acetonanyl, diaphene FP, naphtam-2, 2-3; dibutyl phthalate as plasticizer, 10-20; paraffin as antiozonant, 2-8; fillers: carbon black 47-52 and kaolin 5-22; polybutadiene as modifier, 0.1-10.0; and, additionally, alumina trihydrate, 50-60.

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2 cl, 3 tbl

FIELD: rubber industry, in particular chloroprene resin-based adhesive compositions.

SUBSTANCE: claimed composition contains nairitic adhesive, epoxy dianic resin and still waste from aniline production. Composition of present invention is useful in adhesion of vulcanized rubber surfaces or rubber and metal surfaces.

EFFECT: composition of improved adhesion strength.

3 tbl, 1 ex

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