MATERIAL FOR PROTECTIVE COATINGS OF CONSTRUCTION ERECTIONS AND STRUCTURES, METHOD FOR PREPARATION THEREOF, AND A METHOD FOR MANUFACTURING ROOFING ELEMENTS FROM THIS MATERIAL Russian patent published in 2004 - IPC

FIELD: manufacture of building materials.

SUBSTANCE: invention relates to rubber-polymeric materials and production of waterproofing and roofing materials, which can find use in carrying out roofing operations with roll materials or tiles. Material predominantly composed of blend consisting of rubber waste (55-60 wt parts), and mixture (40-45 wt parts) of high-pressure polyethylene waste and thermoplastic waste, auxiliary additives, and pigments is characterized by that said high-pressure polyethylene waste is, more specifically, ground chlorosulfurized polyethylene waste or ground cable industry polymer waste and said rubber waste is finely ground rubber powder. In indicated mixture, content of indicated wastes dies not exceed 30 wt %. Finely ground rubber powder is characterized by that its maximum particle size does not exceed 0.63 mm and content of 0.3 mm particles is at least 50%. Formation of blank of indicated material and its coiling as well as mixing of components are accomplished in two steps: first, finely ground rubber powder is mixed with auxiliary additives and pigments for 5-10 min at 20^оС and then resulting system is mixed with indicated wastes for 35-45 min and 75-85^оС to obtain uniform mass. Prior to be formed into blank, uniform mass is further homogenized and plasticized during 10-30 min on mixing mills at 90-110^оС and formation of blanks is then effected on four-roll calendar at temperature on first and second rolls of calendar 110-130^оС and on third and fourth rolls 100-120^оС. In a method of manufacturing roofing elements including preparation of protective coating material by proposed method, compaction of blank made from this material and placed onto substrate is preceded by heating blank to 110-130^оС, whereas compaction is effected at pressure 250 kg/cm².

EFFECT: increased economical efficiency of process under environmentally safe conditions and increased frost resistance, heat resistance, and resistance to acids and alkalis.

17 cl, 2 tbl