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A kind of waterproof coating for bridge deck and preparation method thereof
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A waterproof coating and quality technology, applied in the field of coatings, can solve the problems of layer separation, reduced waterproof effect, increased bridge beam height and structural self-weight, etc., to achieve the effect of fast curing rate, reducing physical damage, and reducing construction difficulty.
Active Publication Date: 2021-01-01
SHANXI ZHONGTU TRAFFIC TECH CO LTD
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However, this will not only increase the beam height of the bridge and the self-weight of the structure, but also easily lead to the separation between different layers, which will eventually lead to a decrease in the waterproofing effect
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Embodiment 1
[0034] Add 200g of dioxane, 25g of methyl methacrylate, and 18g of butyl acrylate into the reaction vessel, raise the temperature to 60°C and stir for 1.5h, then add 37g of trimethoxysilane, 0.008g of chloroplatinic acid, and introduce N 2 , heated to 90°C and refluxed for 3.5h, cooled to room temperature, added 2g N,N'-dimethyl-p-toluidine and 0.05g p-hydroxyanisole, stirred for 1h, distilled off the solvent dioxane under reduced pressure, cooled Finally, get A component, sealed and preserved.
[0035] Add 23g methyl methacrylate, 15g butyl acrylate, 17g solidacrylic resin A-01, 6g Al to the reaction vessel 2 o 3 For fine powder, stir and disperse at a speed of 400r / min for 1 hour, then add 0.68g of benzoyl peroxide and 0.34g of antifoaming agent SF-800, and continue to stir and disperse at a speed of 500r / min for 70min to obtain component B, which is sealed and stored.
[0036] When in use, mix component A and component B according to a mass ratio of 1:3, stir for 5 minut...
Embodiment 2
[0038] Add 300g of toluene, 40g of methyl methacrylate, 15g of butyl acrylate into the reaction vessel, raise the temperature to 50°C and stir for 2h, then add 40g of trimethoxysilane, 0.01g of 1,3-divinyl-1,1,3 , 3-tetramethyldisiloxane platinum, through N 2 And raise the temperature to 80°C for reflux reaction for 4h, cool to room temperature, add 1g N,N'-dimethylaniline and 0.03g hydroquinone, stir for 0.5h, distill off the solventtoluene under reduced pressure, and obtain component A after cooling. Keep airtight.
[0039] Add 20g methyl methacrylate, 37g butyl acrylate, 30g solidacrylic resin A-12, 20g Al 2 o 3Micropowder, stir and disperse at a speed of 600r / min for 1.5h, then add 3g cyclohexanoneperoxide and 0.5g defoamer SF-831, continue to stir and disperse at a speed of 800r / min for 50min, and obtain component B, which is sealed and stored.
[0040] When in use, component A and component B are mixed according to a mass ratio of 1:2, and stirred for 10 minutes un...
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Abstract
The invention relates to waterproof paint for a bridge deck. The waterproof paint is formed by mixing a component A and a component B in a mass ratio of 1: (1 to 3), wherein the component A is obtained by reacting methyl methacrylate, butyl acrylate and trimethylsilane under the action of a platinum catalyst, and the component B is a uniformly dispersed system formed by mixing methyl methacrylate,butyl acrylate, solidacrylic resin, fine powder of aluminum oxide, and an initiator. The waterproof paint for the bridge deck has excellent high temperature stability, and can be separately appliedto a waterproof layer of the bridge deck of a bridge, and the damage to the waterproof layer by pavement layer construction can be reduced without adding a high temperature resistant bonding layer.
Description
technical field [0001] The invention belongs to the technical field of coatings, and relates to a waterproof coating, in particular to a waterproof coating used in bridge engineering. Background technique [0002] Bridge deckwaterproofing is one of the key factors to ensure the normal use of bridges, and the bridge deckwaterproofing layer is an important part of the bridge structure. Without a waterproof layer, the steel structure of the bridge will be corroded, which will affect the service life of the bridge and even cause serious accidents. [0003] In the past, there was basically no waterproof layer on the pavement of the bridge in the past, and it mainly relied on vertical and horizontal slopes and drainage systems to drain water. Although some bridges are also equipped with waterproof layers, the quality cannot meet the requirements. These will cause water seepage in the bridge deck layer, leading to serious damage problems such as pavement shedding, alkali-aggreg...
Claims
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