Recycled rubber asphalt waterproof coating is formulated from a mixture of recycled rubber and emulsified asphalt, which has the characteristics of cold operation, fast film formation, high work efficiency, adaptation to wet surface base layer, simple construction, etc., and is widely used at the light level, effectively improving waterproof performance and service life. As a product of desulfurization and regeneration of waste rubber products, recycled rubber has the basic performance characteristics of rubber, the price is very low, and the use of rubber asphalt waterproof coatings can not only reduce the manufacturing cost, but also solve the problem of environmental pollution of some waste rubber.
1. Two-step method to prepare the formula and preparation method of recycled rubber asphalt waterproof coating
(1) Recycled glue dispersion formula
100 parts of recycled glue, 2 parts of anti-aging agent D, 6 parts of oleic acid, 5 parts of potassium hydroxide (20%), 110 parts of soft water, a total of 223 parts.
100 parts of recycled glue, 9 parts of dispersant, 0.2 parts of ammonia, 0.5 parts of anti-aging agent A, 0.5 parts of anti-aging agent D, 96 parts of soft water, a total of 206.2 parts.
(2) Emulsified asphalt formula
15 parts of No. 10 petroleum asphalt, 35 parts of No. 60 petroleum asphalt, 1 part of emulsifier, 1.5 parts of polyvinyl alcohol, 0.8 parts of water glass, 0.4 parts of sodium hydroxide, 50 parts of soft water; Total 103.7 copies.
100 parts of petroleum asphalt, 8.5 parts of emulsifier, 60 parts of soft water; Total 168.5 copies.
(3) Preparation method: Stir the recycled glue dispersion and emulsified asphalt in a ratio of 1:1 and homogenize by ball milling.
2. One-step preparation of recycled rubber asphalt waterproof coating formula and preparation method
(1) Recycled asphalt waterproof coating formula
No. 10 petroleum asphalt 300 parts, residual oil asphalt 90 parts, recycled rubber 30 parts, soap 1.8 parts, water glass 3.6 parts, caustic soda 1.6 parts, tap water 400 parts, talcum powder 100 parts; A total of 927 copies.
100 parts of petroleum asphalt, 8 parts of industrial soap, 120 parts of water, 50 parts of recycled glue, 2 parts of anti-aging agent, 5 parts of sodium rosin oleate soap; A total of 285 copies.
(2) Preparation method: heat and melt the asphalt, add rosin oleate sodium soap and 1/2 water, stir fully to make emulsified asphalt liquid; Add the other half of the water to recycled glue, industrial soap and anti-aging agent, stir strongly to mix into latex, pour it into the emulsified asphalt liquid, continue to stir and mix evenly, and make rubber emulsified asphalt.
Recycled rubber asphalt waterproof coating is not easy to flow at high temperature, not easy to crack at low temperature, has high adhesion and crack resistance, fast film formation, good toughness after film formation, can be applied on wet E5LYY42 surface, can effectively prevent water seepage, has good durability, and is widely used in moisture-proof and leakage prevention engineering, tunnel waterproofing engineering, high-rise building roof waterproofing and other fields.
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