A kind of solvent type rubber asphalt waterproof coating and preparation method thereof

A waterproof coating, rubber asphalt technology, applied in the direction of asphalt coating, coating, etc., can solve the problems of reducing the elongation of modified asphalt, affecting the effect of modified asphalt, swelling SBS for a long time, etc., to achieve complete modification, reduce damage, Evenly dispersed effect

Active Publication Date: 2020-04-14
JINZHOU DONGFANG YUHONG BUILDING MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantages of this process: The temperature of petroleum asphalt swelling SBS must be 170-195°C to ensure the effective swelling of SBS. At the same time, in order to ensure the excellent high and low temperature performance of the product, a large amount of SBS modifier must be added to modify the asphalt. It will inevitably lead to a long time to swell the SBS, and because the temperature of the swollen SBS is higher than the boiling point of the solvent, there is a safety risk of solvent bumping in the batching tank during the dilution process of adding the solvent
Solvent-based asphalt coating products still have a few processes that only use solvents to dissolve SBS. This process can reduce the temperature of dissolving SBS, but the solvent will destroy the molecular chain structure of SBS, affect the effect of its modified asphalt, and reduce the extensibility of modified asphalt

Method used

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  • A kind of solvent type rubber asphalt waterproof coating and preparation method thereof
  • A kind of solvent type rubber asphalt waterproof coating and preparation method thereof
  • A kind of solvent type rubber asphalt waterproof coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Prepare each raw material by formula: in parts by weight, 45 parts of No. 70 road petroleum asphalt, 31 parts of xylene, 10 parts of SBS4402 (star structure), 4 parts of amorphous α-olefin copolymers (purchased from Liaohua Qida Co., Ltd. ), 10 parts of light calcium; add asphalt and xylene to the reaction vessel, heat up to 86°C to form the first product; add SBS4402 to the reaction vessel, control the temperature at about 86°C, 2000 rpm high-speed melting shear 55 minutes until SBS4402 is completely dissolved to form the second product; add amorphous α-olefin copolymer to the reaction vessel, control the temperature at about 85°C, and stir at 2000 rpm for 0.5 hours to form the third product; add to the reaction vessel Light calcium, the temperature is controlled at about 75°C, the fourth product is formed after high-speed stirring at the above-mentioned speed, and the solvent-based rubber asphalt waterproof coating is obtained after the fourth product is cooled to 50°C...

Embodiment 2

[0029] Prepare each raw material by formula: in parts by weight, No. 90 road petroleum asphalt 43 parts, D70 is 33 parts of solvent naphtha, SBS4303 (star structure) 8 parts, amorphous α olefin copolymer 4 parts (purchased in Liaohua Qi up to the company), 12 parts of heavy calcium;

[0030] Add asphalt and D70 to the reaction vessel, heat up to 90°C to form the first product; add SBS4303 to the reaction vessel, control the temperature at about 90°C, and melt and shear at 2000 rpm for 60 minutes until the SBS4303 is completely dissolved and formed The second product; add amorphous α-olefin copolymer to the reaction vessel, control the temperature at about 90°C, stir at a high speed of 2000 rpm for 0.5h to form the third product; add light calcium to the reaction vessel, control the temperature at 78 ℃, 2000 rpm high-speed stirring to form the fourth product, and the fourth product is cooled to 50 ℃ to obtain the solvent-based rubber asphalt waterproof coating.

Embodiment 3

[0032] Prepare each raw material by formula: in parts by weight, No. 90 road petroleum asphalt 45 parts, D80 is 34 parts of solvent naphtha, SBS4402-1 (star structure) 7 parts, 3 parts of amorphous α olefin copolymers (purchase in Liao Huaqida Company), 11 parts of heavy calcium;

[0033] Add asphalt and D90 to the reaction vessel, heat up to 95°C to form the first product; add SBS4402-1 to the reaction vessel, control the temperature at about 95°C, melt and shear at 2000 rpm for 60 minutes to SBS4402-1 After complete dissolution, the second product is formed; add amorphous α-olefin copolymer to the reaction vessel, control the temperature at about 95°C, and stir at 2000 rpm for 0.5 hours to form the third product; add heavy calcium to the reaction vessel, The temperature is controlled at about 80°C, and the fourth product is formed after stirring at a high speed of 2000 rpm, and the solvent-based rubber asphalt waterproof coating is obtained after the fourth product is cooled...

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Abstract

The invention discloses a solvent type rubber asphalt waterproof coating and a preparation method thereof and relates to the field of a waterproof coating. The preparation method disclosed by the invention comprises the following steps: mixing asphalt and an organic solvent and heating to the first temperature, thereby forming a first product; adding styrene-butadiene-styrene segmented copolymer into the first product, controlling the temperature under the second temperature, fusing and shearing till fully dissolving styrene-butadiene-styrene, thereby forming a second product; adding amorphous state alpha olefin copolymer into the second product, controlling the temperature under the third temperature and stirring, thereby forming a third product; and adding filler into the third product, controlling the temperature under the fourth temperature and then stirring, thereby forming a fourth product, namely, the solvent type rubber asphalt waterproof coating. According to the method disclosed by the invention, the modifying temperature is greatly lowered, the modifying time is shortened and the elongation at break of the product is increased.

Description

technical field [0001] The invention relates to the field of waterproof coatings, in particular to a solvent-based rubber asphalt waterproof coating and a preparation method thereof. Background technique [0002] Solvent-based rubber asphalt waterproof coating is a modified asphalt waterproof coating commonly used in the construction waterproof industry. It is widely used in waterproof parts such as roofs, basements, garage roofs, and engineering foundations. It is used in combination with waterproof membranes to form an excellent waterproof system. Its advantages are: the construction process is convenient and simple, the film forming speed is fast, and it can be applied below 0°C. At the same time, the product has excellent high and low temperature performance, and is widely recognized by the waterproof industry. [0003] Nowadays, most of the production processes of solvent-based asphalt coating products use SBS (styrene-butadiene-styrene block copolymer) to modify the as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D195/00C09D7/61C09D7/65
CPCC08K2003/265C08L2205/03C09D195/00C08L53/02C08L23/00C08K3/26
Inventor 毕书鹏刘金景吴士玮陈晓文
Owner JINZHOU DONGFANG YUHONG BUILDING MATERIALS
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