SU834073A1 - Composition for binding rubber to textiles - Google Patents

Description

(54) COMPOSITION FOR STRENGTHENING RUBBER TO TEXTILE MATERIALS Neni, which probably have the structure of chelate rings (for example for -NHCHXH -NHCM. VZ-gh /, 4HCH, CH, this coordination number of copper in polyethyleneimine complexes is 4 In the used solutions, there is an excess of PEI in relation to the amount of salt injected, this solution contains PEI and the complex PEI compound with a variable valence metal salt. This is confirmed by the spectral method. When spectrophotometrically, the solutions (wavelength) get a constant constant optical density, which is typical for complexation of solutions containing an excess of PEI. Thus, the mounting composition contains polyethyleneimine and a complex compound of PEI with a variable valence metal salt. The quality of the composition can be monitored by determining the content of the metal cation in the composition. EXAMPLE 2 Preparation of a composition consisting of a composition of polyethyleneimine with nitric acid iron. To a solution of 2.5 g of GOI in 47.5 ml of water is added 0.75 g of iron nitrate. The undissolved portion is filtered off. Get a homogeneous solution of light brown color with content, 0073%. Solutions with a different content of Fe GB t are similar to recalculating the amount of the cation for iron nitrate. Example 3. Preparation of a formulation consisting of a poly1 composition of ethyleneimine with titanium tetrachloride. To a solution of 3.8 g of PEI in 72.2 ml of water was added 0.4 g of titanium tetrachloride. The undissolved portion is filtered off. A uniform colorless solution is obtained with a content of 025%. Solutions with a different content are prepared similarly with recalculation of the required amount of cation per titanium tetrachloride. EXAMPLE 4 Preparation of a Composition Consisting of a Polyethyleneimine Composition with Nickel Sulphate. To a solution of 60 g of PEI in 198 ml of water was added 6 g of nickel sulphate. A homogeneous solution of green color is obtained with a content of 5%. Solutions with a Ni oT content of 0.002 to 0.2% are obtained by recalculating the required Ni content to the amount of nickel sulphate. PRI me R 5. Preparation of a formulation consisting of a composition of polyethyleneimine with copper acetate, a surfactant, and a thickening agent. To a solution of 2.5 g of PEI in 47.5 ml of water was added 0.03 g of acetic acid media, 0.25 g of surfactant (preparation OC-20, which is a mixture of polyethylene glycol ethers of higher fatty alcohols) and 10 ml 3% solution of CMC thickener (sodium carboxymethylcellulose). Content of components, wt.%: PEI: OC-20, p2: 0.5: 0.6. Next, samples of the compositions are prepared and tests are carried out on the bond strength of rubbers with textile materials. Example 6. The application of impregnating compositions containing the composition of PEI with metal salts, in particular with copper acetate, on textile materials is carried out according to generally accepted impregnation technology, followed by drying at 70-120 ° C until moisture is removed. Impregnated textile material (twisted : multifilament yarns of natural or chemical fibers) are brought into contact with a rubber mixture based on polychloroprene of sulfuric regulation that does not contain adhesive components, and vulcanize at 151 ° C for 20 minutes. In tab. Figure 1 shows the effect of the adhesion treatment of textile materials made of various fibers on the strength of their bonding with polychloroprene rubber. The data presented in Table 1 shows that, depending on the type of fibers, the use of experimental impregnating compositions leads to an increase in bond strength by a factor of 1.5–4, but for polyester fibers, the proposed composition is most effective. Example 7. Impregnating compositions containing a PEI composition with a titanium tetrachloride salt are applied to polyester fiber fabrics according to the conventional technology, dried as indicated in Example 6. The used fabric is brought into contact with a rubber mixture based on a binary mixture of two elastomers SKEPT and BK (l: l) or on the basis of chlorobutyl rubber. In tab. Table 2 shows the results of delamination tests (the propitol composition contains 0.02%. 15% PEI), the analysis of which shows that the bond strength increases 2.5 times when using the proposed impregnating composition for treating fabrics brought into contact with rubber compounds. based on non-primer or low polar (KBC) elastomers. Example Impregnated soyavas containing a PEI composition with variable valence metal salts (Cu, Fe, T) are applied to polyester twisted yarns and dried as oibicaHo in Example 6. The impregnated and dried twisted yarns are brought into contact with a polychloroprene rubber mixture, not containing adhesive components. The content of PEI in the compositions (aqueous solutions) varies from 0.1 to 15%, the content of the metal cation in aqueous solutions from 0.002 to 0.2%. The results of determining the bond strength of rubber; the treated twisted yarns are listed in Table. 3. For comparison, polyester twisted yarns of similar structure are treated with aqueous solutions of the same concentration of PEI as the proposed formulations. Analysis of the data presented in Table 3 suggests that the proposed impregnating compositions are suitable for adhesive processing of polyester fibers. At the same time, with an increase in the concentration of PEI from 0.1 to 15 wt.% In the composition (with the same content of metal cation, for example, Cu equal to 0.004 wt.%), The bond strength increases from 13.0 to 30.0 kgf. /cm . With an increase in the content of the metal cation in the composition (at the same concentration of PEI in solution), the bond strength varies nonmonotonically, reaching maximum values at relatively low concentrations of the metal cation. So, when the content of PEI is equal to 5.0 wt.%. The optimal amount of Cu in the impregnating composition is probably 0.02 wt.%; at lower or higher concentrations of Cu, the bond strength decreases slightly (from 34.4 to 21.2 kgf / cm), but is at a higher level than in samples C of polyester twisted yarns treated with an aqueous solution of PEI of the same concentration ( 5.0 wt.%). From the data table. 3 it also follows that due to the presence of metal cations such as Ni, Fe, Ti in the proposed impregnating compositions, the adhesion properties of the impregnated polyester twisted yarns are significantly improved. The proposed formulations provide an increase in bond strength 4-5 times higher compared to the unsuppressed. It is also important that in comparison with the known (solutions of PEI; those concentrations), the impregnating compositions contribute to an increase in the bond strength with rubber by 1.5–2 times. The level of bond strength achieved when treating polyester twisted yarns with experimental impregnating compositions is the same as when processing compositions known in the industry containing isocyanate compounds (30-35 kgf / cm). Example9. OX-20 surfactant and thickener (sodium carboxymethylcellulose salt, see note 5) are additionally introduced into the impregnating composition containing PEI and copper acetate. To determine the bond strength with polychloroprene rubber, samples are prepared using impregnated and dried polyester twisted yarns as described in Example 6. The bond strength increases from 23.9 to. 29.0 kgf / cm. The proposed impregnating compositions are easy to manufacture, as they include water-soluble compounds. In the process of preparation, application of impregnating compositions and subsequent drying of textile materials, no volatile toxic products are released. Drying is carried out at temperatures not higher than 120 ° C, which reduces energy costs. Compared to aqueous solutions of PEI, a higher level of bond strength of rubbers with textile materials treated with experimental impregnating compositions is achieved. At the same time, there is no noticeable deterioration of the strength properties of textile materials made of polyester fibers, as is the case with the processing of these materials with concentrated solutions of PEI.

7834073-8

Thus, the proposed products improve the working conditions of labor, while ensuring wages, reduce pollution of the environment and working quality of the living environment.

Table

Chlorobutyl Auchuk

SKEPT + butyl rubber (1: 1)

Without impregnation

The composition containing, as an adhesion modifier, the composition of PEI with a metal salt, May.%

The cation of the metal PEI

C, 0

0,002 Table 2

0.9-1.0

2.6-2.7 0.9-1.0 1.8-2.0

Table 3

7,8

Claims (1)

21.9 The claims Composition for attaching rubbers to textile materials, including polyethyleneimine and a solvent, is due to the fact that, in order to increase the bond strength of rubbers with stylish, t-materials in the rubber fabric, and to improve labor well-being, contains a salt of a metal selected from the group: copper, iron, nickel, titanium83407310 1 Continuation of the table. 3 in the following ratio of components, wt.%: Polyethyleneshin 0.1–15.0 Salt of the above metal in terms of metal 0.002–0.200 Solvent References Sources of information taken into account during the examination 1. US patent 3449200, cd. 161-92, published. 1965 (prototype)