RU2134756C1 - Roll roofing and waterproofing material - Google Patents

Abstract

FIELD: manufacture of building materials. SUBSTANCE: invention, in particular, relates to upper and lower membrane roofings and waterproofing of buildings and constructions. Roll material consisting of base glass, bitumen polymer binder, upper layer filler, and lower layer polymer film is distinguished by that its lower layer composition contains, wt %: atmosphere-vacuum petroleum distillation residue with viscosity at least 8 s oxidized to softening temperature 36-40 C, 50-60; ataxic polypropylene with viscosity 10000-100000 s, 10-20; divinylstyrene thermoelastoplastic, 0.5-3; and mineral filler, 25-35. EFFECT: improved physico-mechanical properties and increased heat resistance. 1 tbl

Description

 The invention relates to the field of building materials, namely to roofing and waterproofing material, intended for the device of the upper and lower layers of the roofing carpet, as well as for waterproofing buildings and structures.

 The most promising are bitumen-polymer roofing materials, in which the polymers are modified additives to improve the characteristics of bitumen. As a basis, jute fabric, fiberglass, polyester fiber can be used, and elastomers and copolymers to modify bitumen.

 Known bitumen-polymer materials based on polyethylene and synthetic rubber [1,2], polyethylene and styrene butadiene rubber [3], unvulcanized rubbers and butyl rubber [4], chlorosulfonated polyethylene and butyl rubber [5], butyl rubber and low molecular weight polyethylene [6], polymer and rubber [7]. A bitumen-polymer composition has been developed, the fibrous base of which is made of lavsan and binding latex based on acrylonitrile or styrene butadiene rubbers [8]. Bitumen-polymer roofing materials based on bitumen and crumb rubber with the addition of thermoplasticity [9, 10] and with the addition of styrene butadiene rubber have been developed. The roofing roll material made of a fibrous base impregnated with bitumen and having a polymer coating is proposed by the inventors [11]. In [12], a composition for roofing based on bitumen, chlorosulfonated polyethylene and polyvinyl chloride is described.

 Known rolled roofing material "Filizol" manufactured by A. O. "Filikrovlya" Moscow - prototype. Its basis is fiberglass, which is impregnated and coated on both sides with a bitumen-polymer binder. The upper layer has a coarse-grained mineral sprinkling, the lower layer is small, preventing the sticking of the roll. Bitumen-polymer binder consists of a mixture of unoxidized bitumen with divinyl styrene thermoplastic elastomer.

 The authors propose a surfaced roll bitumen-polymer material, which is obtained by double-sided application of a bitumen-polymer binder consisting of bitumen, atactic polypropylene (and similar polymers) and filler onto the base.

In order to improve the physical and mechanical characteristics of the material, it is proposed to use a modified bitumen-polymer composition consisting of residues of atmospheric-vacuum distillation of oil with a viscosity of at least 8 s, oxidized to a softening temperature of 36 - 40 ^o C, in an amount of 50-60 wt.%, atactic propylene with a viscosity of 10,000-1000000 s in the amount of 10-20 wt. %, or isotactic polypropylene in an amount of 2-3 wt.%, divinyl styrene thermoplastic elastomer in an amount of 0.5-3 wt.%, as well as a mineral filler in an amount of 25-35 wt.%
Polyester fiberglass, fiberglass are used as a base, talc magnesite is used as a mineral filler.

 The material intended for the top layer of the roofing carpet is available with a protective coarse-grained or scaly coating. Material intended for the lower layer of the roofing carpet or insulation is available with fine-grained sprinkling or release film. The underside of all types of material is coated with a release film.

 An example of the fabrication of the bikrotep material.

 Bikrotep is made on ruberoid aggregate by double-sided coating on fiberglass treated with A3 sizing or BNK-40/180 impregnating bitumen with a bitumen-polymer coating composition consisting of oxidized raw materials for the production of coating bitumen with a viscosity of (5-20) s, atactic polypropylene, and talc magnetite filler, divinyl styrene thermoplastic elastomer. After applying the coating composition, the surface of the material is protected from sticking by a polymer film.

 The manufactured material has passed the tests necessary to evaluate the properties of the material during its operation in the roof. Such tests include: water absorption, heat resistance, strength, deformability, cyclic effects of water, heat and frost. Sample preparation and testing was carried out in accordance with the requirements of GOST 2678-87 "Roll-up roofing materials into waterproofing materials. Test methods", as well as the methods developed at the Central Scientific Research Institute of Industry.

 When tested for thermal aging, the change in the strength and deformability of the material is determined during prolonged exposure to elevated temperature, which simulates the effect in the summer.

In tests for the effects of heat, water and frost, the change in the flexibility index of the rolled material under cyclic effects of atmospheric factors is determined. In this case, the potential service life of the material is determined by changing the flexibility of the rolled material to a limit value of this indicator equal to 10-15 ^o C. This limit is taken from the condition of practical loss of performance in roofs having attractive bituminous compositions with flexibility in which cracks (when bending the roll material) appear at 15 ^o C, and such flexibility is established during field surveys on collapsed roofs with a large number of through cracks in the roofing carpet.

 Indicators of strength, deformability, flexibility, heat resistance and water absorption of the test material "Bikrotep" are given in the table in comparison with the surfaced roll material "Filisol-super."

 As follows from the table, the material has the best characteristics: heat resistance, low water absorption, has high elasticity at low temperatures. An exception is strength (tensile load).

Literature
1. A.S. USSR N 1141108, C 08 L 95/00, op. 05.23.85, BI 7.85
2. A.S. USSR N 1558942, C 08 L 95/00, op. 04/23/90, BI 15.90
3. A.S. USSR N 1761768, C 08 L 95/00, on. 09/15/92, BI 34.92
4. A.S. USSR N 979431, C 08 L 23/22, op. 7.12.82, BI 45.82
5. A.S. USSR N 1067010, C 08 L 23/22, op. 01/15/84, BI 2.84
6. A.S. USSR N 1452820, C 08 L 23/22, op. 01/23/89, BI 3.89
7. A.S. USSR N 1346648, C 08 L 95/00, op. 10.23.87, BI 39.87
8. A.S. USSR N 1776710, D 08 N 5/00, op. 11/23/92, BI 31.92
9. A.S. USSR N 1047939, C 08 L 95/00, op. 10/15/83, BI 38.83
10. A.S. USSR N 1143754, C 08 L 95/00, op. 7.03.85, BI 9.85
11. RF patent N 1836516, D 06 N 5/00, op. 08/23/93, BI 31.93
12. A.S. USSR N 1650680, C 09 D 123/34, op. 05/23/91, BI 19.91p

Claims (1)

Rolled roofing and waterproofing material, including a glass base, coated on both sides with a bitumen-polymer filled mass, sprinkling of the upper layer and a polymer film of the lower layer, characterized in that the mass consisting of residues of atmospheric-vacuum distillation of oil with viscosity of at least 8 s, oxidized to a softening temperature of 36 - 40 ^o C, atactic polypropylene with a viscosity of 10,000 - 100,000 s and divinyl styrene thermoplastic elastomer, as well as mineral filler in the following m ratio of components, wt.%:
The remainder of the atmospheric vacuum distillation of oil with a viscosity of at least 8 s, oxidized to a softening temperature of 36 - 40 ^o C - 50 - 60
Atactic polypropylene with a viscosity of 10,000 - 100,000 s - 10 - 20
Divinyl styrene thermoplastic elastomer - 0.5 - 3
Mineral filler - 25 - 35

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