Composition for roofing

 

(57) Abstract:

Usage: the invention relates to the field of polymer-bitumen for roofing and waterproofing coatings. The inventive composition contains the following components, wt.h. the best choice rubber 7,5 9,5; bitumen 5,7 7,7; 20% solution of the degradation products the best choice of rubber in the mixture taken in equal mass quantities of xylene and nefras 0,8 50,0; antimony oxide 0,4 0,7; solvent white spirit or nefras 50,0 58,0; asbestos flour 0,8 - 2,8; cement 23,0 26,0. table 2.

The invention relates to the field of polymer-bitumen for roofing and waterproofing coatings.

Closest to the proposed to the technical essence and the achieved result is a composition for waterproofing coatings, including the best choice rubber, bitumen, xylene, talc and benzoyl peroxide.

This composition has good heat resistance, but high viscosity, low mechanical properties and adhesion.

The aim of the invention is the lowering of the viscosity, the improvement of physico-mechanical characteristics of the coating and adhesion while maintaining basic operational cloisterly rubber, bitumen-modifying additive, solvent and filler, contains as a modifying additive film-forming SPAF, antimony oxide, solvent, white spirit or nefras, and filler asbestos flour, cement in the following ratio, wt. h

Rubber butadiene - roll 7,5-9,5 Bitumen 5,7-7,7

Film-forming SPEF of 0.8-50.0, white spirit or nefras 50,0-58,0 Asbestos flour 0,8-2,8 Cement 23,0-26,0 Oxide antimony (III) 0,4-0,7

Film-forming SPAF this 20% solution of the degradation products the best choice of rubber in the mixture taken in equal mass quantities of xylene and nefras.

The use of film-forming SPAF, oxide of antimony as modifying additives specified solvent and filler contributes to the formation of the coating film of more advanced structural grid and, as a consequence, the improvement of physico-mechanical and adhesive characteristics of the material. While the inclusion in the composition of these ingredients in the specified amounts can improve simultaneously and important technological characteristic viscosity, which contributes to the empowerment of the application of mastic on the protected surface. As the best choice causality film-forming SPAT on THE 38, 40378-87 and oxide of antimony. As the solvent used white spirit according to GOST 3134-78 and nefras on THE 38-40125-82 and fillers, asbestos flour, cement.

The composition is prepared as follows.

Reactor type 3M 630 WRC with steam heating and stirring for 7-8 h at 70-80aboutTo prepare 13-14% solution the best choice of rubber in a given amount of white spirit or nefras. During the next 20-30 min at the same temperature it is mixed with a 20% solution of the degradation products the best choice of rubber in the mixture, taken in equal mass ratios of xylene and nefras, and enter the bitumen. Ingredients stirred at 70-80aboutC for 20-30 minutes After the mixture was added alternately and in parts oxide of antimony, asbestos flour and cement. Stirring is carried out for 2-4 hours, the Composition is applied by airless spray brush or roller in two layers of 0.5 mm and utverjdayut at room temperature up to degree 3 in two days. The samples subjected to the test.

The compositions according to the invention are given in table. 1, and the properties of the compositions according to the examples in comparison with the prototype table. 2.

The tests were carried out in strict accordance with the procedures defined with the BR>
elongation GOST 270-75

Adhesion to THE metal 21-27-10485

Heat GOST 2678-81

Frost GSAT 2678-81

Analysis of the data table. 2 show the advantages of the proposed structure.

COMPOSITION FOR ROOFING, including butadiene-styrene rubber, bitumen, additives, filler and a solvent, characterized in that it contains as an additive a 20% solution of the degradation products of styrene-butadiene rubber in the mixture taken in the ratio 1: 1 xylene and nefras, and oxide of antimony (III), as solvent white spirit or nefras, as filler asbestos flour and cement in the following ratio, wt.h.

Butadiene-styrene rubber 7,5 9,5

Bitumen 5,7 7,7

20% Solution of the degradation products of styrene-butadiene rubber in a mixture of xylene and nefras 0,8 50,0

Asbestos flour 0,8 2,8

Cement 23 26

The oxide of antimony (III) 0,4 0,7

White spirit or nefras 50 58

 

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