The method of obtaining material for waterproofing

 

(57) Abstract:

The method can be used in the technology of producing materials for corrosion waterproofing coatings. Mix chlorosulphurized polyethylene and additives target when heated on rollers and form. Before mixing in the mill pre-mixed in retinotectal at a temperature of 75 - 80oIn the presence of polyethylene oxide with a molecular weight of 200 to 1,000 and a mixture of salts of synthetic fatty acid fraction C10- C18and after forming material is cooled at a speed of 5 to 7 deg/min Reduced water absorption, no grazhdanina, increases chemical resistance of the coating. table 2.

The invention relates to anti-corrosion and waterproofing protection structures, storage pools industrial wastewater from electroplating waste polluted waters of metallurgical production, and more particularly to a technology for waterproofing materials based on chlorosulfonated polyethylene (HCPE).

A method of obtaining a paint composition, in which the dispersant is used in a mixture of dimethylformamide with aromatic coal is hirvenoja polyethylene (SU, A. with. 147709, class C 09 D 123/34, 1962).

When carrying out the known method, the resulting coating has a higher absorption rate to 3.6% and significant grazhdanina (MS).

A method of obtaining anti-corrosion coatings based on chlorosulfonated polyethylene (SU, and.with. 210358, class C 09 D 5/08, 1979), which is a mixture of chlorosulfonated polyethylene, vulcanizing additives, filler and pigment, followed by heating and molding.

The disadvantage of this method is the low chemical resistance of coatings in organic acids that are present in industrial effluents.

The closest in technical essence and the achieved result to the claimed invention is a method of obtaining a waterproofing material on THE 6-01-438-90, including mixing in the mill, HSPA and special additives by heating and subsequent molding.

The disadvantage of the coating material obtained in a known manner is a high water absorption and grazhdanina.

The problem to address with the proposed method, is to protect the environment and groundwater from pollution by sewage PCI and low grazhdanina.

Technical result achieved when using the inventive method, is expressed in the reduction of water absorption to 0,86% and lack of grazhdanina (point "G1"). When this chemical resistance is increased and remains at the level "AD1" regardless of the impact of organic and mineral acids.

Upon receipt of waterproofing material for coatings based on chlorosulfonated polyethylene, special additives - vulcanizing additives, filler and pigment by the temperature of mixing and molding, optionally injected at a temperature of 75 - 85oC stabilizing additives are oxides of ethylene with molecular weight of 200 to 1,000 and a mixture of salts of FLC C10-C18(synthetic fatty acids), and cooling the formed material produced at 5-7 degrees/minutes

The stabilizing additive is introduced into the composition based on 100 wt.h. HSPA-20. The introduction of stabilizing additives per 100 wt.h. all components of the composition is valid, but it does not necessarily produce the most effective achievement of technical solutions. Therefore, to achieve maximum results calculation of stabilizing additives are given per 100 wt.h. HSPA-20 (see table. 1).

As stacked with a molecular mass of 200 - 1000;

a mixture of salts of synthetic fatty acids (FFA) C10-C18.

As a mixture of salts of FLC can use any mixture of salts of FFA fraction C10-C18for example, dicyclohexylamine, dicyclohexylamine with benzylamine, dicyclohexylamine nitrate, dicyclohexylamine capronovogo, etc. In the examples of the present invention is a mixture of salts of FLC dicyclohexylamine (industrial name IBAC; depending on the chain length alcohols produced IBAC-11, IBAC-16, IBAC-18). You can use any combination of these salts IBAC in the ratio of 1:1. In the examples given data using a combination of IBAC-11 + IBAC-16 + IBAC-18 in the ratio of 1:1:1.

To achieve a technical result used different brands of chlorosulfonated polyethylene (a, B, L, W, s, 20, 20K, and others). In the examples, the results are given using the brand HSPA-20 that has the following characteristics: the chlorine content of 26 - 32%; sulfur - 1,3 - 2,2%; moisture not more than 1% to 0.5%; volatile matter not more than 1%; ash not more than 0,5%; iron not more than 0.5%; solubility in CCl4not less than 98%; the onset temperature of decomposition of at least 140oC. Stabilizing additive that you can enter as per HSPA and verusa additive oxides of ethylene with molecular weight of 200 to 1000 and mixtures of salts FLC C10-C18manifesting in the known compositions of the anti-adhesive properties that allow for the use of the proposed method to obtain the waterproofing coating is resistant to sewage and waste environmentally hazardous industrial facilities.

Thus, the technical result is achieved due to the receipt of material for waterproofing coating by mixing in a rubber mixer at a temperature of 75 - 85oC for 5 to 7 minutes chlorosulfonated polyethylene, special additives and added stabilizing additives. Then hold the molding and then cooled at a speed of 5 - 7 degrees/minutes

In the proposed method uses chlorosulphurized polyethylene of various brands, as stabilizing additives used a polyethylene oxide with a molecular weight of 200 to 1,000 and any mixture of salts of synthetic fatty acids (FFA) fraction of C10-C18.

In the examples presented results using chlorosulfonated polyethylene grade HSPA-20, and a mixture of salts of synthetic fatty acid fraction C10-C18dicyclohexylamine (industrial name IBAC) with different chain length alcohols, publishing.

At the beginning prepare a mixture of chlorosulfonated polyethylene, filler such as chalk, pigment (TiO2, Cr2O7and others), vulcanizer (thiuram, MgO), a vulcanization activator, such as diphenylguanidine and stabilizing additives in the form of ethylene oxide with a molecular weight of 200 to 1,000 and a mixture of salts of synthetic fatty acids FFA10- C18.

When mixing ingredients to avoid delamination of the finished coating should be drying agents, fillers, and additives included in the composition of the material.

The mixture is prepared in a rubber mixer, load it to the above components, and stirring them for 5 to 7 minutes at a temperature of 75 - 85oC. Good dispersion is achieved by rolling with the cooling rollers to a temperature of 40oC. After which the conveyor is air cooling the mixture to a temperature of 20oC. Then otrisovana mixture is aged at least 6 hours. Then may be subjected to calandrinia in the mill. This produces heating of the material in the mill to a temperature of 80oC and the final formation of calandrinia at a temperature of 80 - 90oC with a gradual cooling calenders to tempera is alandry with a certain temperature from the highest to the lowest. When this happens additional homogenization and the plasticization of the composition. The formed sheet material is cooled to a temperature of 20oC, and cooling produce at the rate of 5 - 7oC per minute.

Gradual cooling contributes to the stabilization of the final product, and in conjunction with the introduction of ethylene oxide with a specific molecular weight and salt FLC C10-C18and a certain temperature (75 - 85oC) to receive the waterproofing coating high chemical resistance and lower than in the known methods the absorption and grazhdanina. Comparative properties of the coatings are given in table. 1, 2.

The method of obtaining material for waterproofing coating the mixture on the rolls of chlorosulfonated polyethylene and special additives by heating, followed by molding, characterized in that chlorosulphurized polyethylene and special additive pre-mixed in a rubber mixer at a temperature of 75 - 85oIn the presence of added as a stabilizing additive of polyethylene oxide with a molecular weight of 200 to 1,000 and a mixture of salts of synthetic fatty acid fraction WITH10- C18and after molding

 

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