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A kind of organic-inorganic hybrid waterproof coating and preparation method thereof

A waterproof coating and inorganic technology, applied in anti-corrosion coatings, fire-resistant coatings, polyurea/polyurethane coatings, etc., can solve problems such as difficulty, high water absorption, easy cracking and peeling of the interface layer, and improve engineering reliability and life. , good aging resistance, the effect of overcoming surface defects

Active Publication Date: 2017-12-15
SOUTHEAST UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) During the construction of the external waterproof and thermal insulation layer of the external wall, a wide variety of materials are required, multiple constructions are required, the process is complicated, and the cost is high. The cost is about 80-110 yuan / ㎡
[0004] (2) The thermal expansion coefficients of the waterproof layer and other exterior wall materials differ greatly. Under the action of alternating temperature changes, the interface layer between the two layers is easy to crack and peel off, resulting in moisture or even water seepage, which greatly reduces the waterproof effect of the exterior wall, and Leakage points are not easy to find and maintenance costs are high
[0005] (3) Affected by the construction process, cracks of different degrees often appear on the window sills, columns, beams, etc. of the exterior walls of the building. During the use process, these cracks will continue to grow larger, resulting in damage to the waterproof system
[0006] (4) When the existing building is upgraded, the bearing weight has been determined. Since the load on the roof cannot be increased, the original roof waterproof surface layer needs to be removed, which is difficult, long construction period, disturbing people, and high cost
[0007] (5) When the existing waterproof material adopts inorganic materials, the water absorption rate is high, it is easy to crack, easy to seep water, and the waterproof effect is poor
When using organic materials, it is easy to burn, easy to decompose, and not resistant to aging
[0008] At the same time, when the existing waterproof coatings are used on special parts such as building roofs, indoor corners, window sills, toilets, etc., the waterproof effect is not satisfactory.
The waterproof technology of tunnels, underwater or underground facilities has always been a difficult point in the industry, and the existing technical methods are high in cost and poor in effect

Method used

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  • A kind of organic-inorganic hybrid waterproof coating and preparation method thereof
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  • A kind of organic-inorganic hybrid waterproof coating and preparation method thereof

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preparation example Construction

[0047] The preparation method comprises the following steps:

[0048] (1) Micropowder compounding: Weigh the coarse and fine powders and fine powders separately, mix them by equal weight, put them into the mixer, and pour them into the container after fully mixing;

[0049] (2) Mix modifier preparation: weigh the flame retardant, antioxidant, anti-ultraviolet agent, leveling agent, surfactant, and coupling agent in sequence, and put them into the batching pot according to the proportion, and stir at a low speed until completely uniform;

[0050] (3) Preparation of component A: Add the matrix resin into the container containing the compound micropowder, stir fully on the mixer at low speed until it is completely mixed, then add the mixing modifier, after the dispersion is even, then add the thixotropic agent , adjust the viscosity to meet the construction requirements;

[0051] (4) Preparation of group B: weigh the curing agent and plasticizer according to the ratio, put them ...

Embodiment 1

[0055] Weigh 100-mesh mica powder and 2000-mesh mica powder separately, mix them by equal weight, put them into the mixer, and pour them into the batching pot after fully mixing. In turn, aluminum hydroxide flame retardant, p-phenylenediamine antioxidant, phenyl phthalate anti-ultraviolet agent, isophorone leveling agent, and KH550 coupling agent are weighed according to the proportion and poured into another batching pot , stirring on low speed until completely homogeneous. Add polyurea resin to the container containing the compound micropowder, and stir thoroughly on the mixer at a low speed until it is completely mixed, then add the mixed modifier and nanocellulose thixotropic agent, and disperse evenly to obtain component A slurry. Stir the benzoic acid plasticizer and the di-tetramethylbenzene diisocyanate curing agent according to the proportion to obtain the B component. Finally, mix components A and B and stir at high speed for 1 minute to obtain an organic-inorganic ...

Embodiment 2

[0058] Weigh 500-mesh mica powder and 5000-mesh fly ash separately, mix them according to equal weight, put them into the mixer, and pour them into the batching pot after fully mixing. Flame retardant prepared by mixing borax and boric acid in equal weight, diaryl secondary amine antioxidant, 2,4-dihydroxybenzophenone anti-ultraviolet agent, isophorone leveling agent, sodium polyacrylate surfactant , weighed according to the ratio, poured into another ingredient pot, and stirred at a low speed until completely uniform. In the container containing the compound micropowder, add epoxy resin, stir fully on the mixer at a low speed until it is completely mixed, then add the mixed modifier and nanocellulose thixotropic agent, and disperse evenly to obtain component A slurry. Stir the terephthalic acid plasticizer and the di-tetramethylbenzene diisocyanate curing agent according to the proportion to obtain the B component. Finally, mix components A and B and stir at high speed for 1...

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Abstract

The invention relates to organic and inorganic hybrid waterproof paint and a preparation method thereof. Ordinary waterproof resin such as polyurea, polyurethane and epoxy resin serves as the raw material, compound micro powder prepared from solid waste and sludge is added, a mixed modifier and a thixotropic agent are added, and a component A sizing agent is prepared. After a curing agent and a plasticizer are added, the mixture is applied to a corresponding base material through the methods of spraying, brush coating, roll coating and the like, solidification is conducted at room temperature, and a waterproof coating is obtained. The organic and inorganic hybrid waterproof paint has the comprehensive advantages of being good in waterproof effect, high in hardness, good in permeation resistance and corrosion resistance, low in coefficient of linear expansion, high in softening temperature, capable of resisting oxidation, aging and flame, firm in combination with a substrate and the like, the paint can be used for water resistance of newly-built or existing buildings, swimming pools, tunnels, underground facilities and the like, non-wet operation on site can be achieved, one-stage molding is achieved, the construction period is short, the cost is extremely low, and an excellent market prospect is achieved.

Description

technical field [0001] The invention relates to an organic-inorganic hybrid waterproof coating and a preparation method thereof. Background technique [0002] In recent years, as the real estate industry has become an industry that accounts for more than 50% of local fiscal revenue, real estate has developed vigorously. Waterproofing of exterior walls is a difficult problem in the construction industry. At present, it is difficult to solve the problem of waterproofing of exterior walls of buildings. The main problems are as follows: [0003] (1) During the construction of the external waterproof and thermal insulation layer of the external wall, a wide variety of materials are required, multiple constructions are required, the process is complicated, and the cost is high, with a cost of about 80-110 yuan / ㎡. [0004] (2) The thermal expansion coefficients of the waterproof layer and other exterior wall materials differ greatly. Under the action of alternating temperature cha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/02C09D175/04C09D5/08C09D5/18C09D7/12
CPCC08K2201/011C08K2201/014C08L2201/02C08L2201/08C08L2205/03C09D5/08C09D5/18C09D7/61C09D7/63C09D175/02C09D175/04C08L1/02C08K13/02C08K3/34C08K2003/2227C08K5/18C08K5/1345C08L33/02C08K2003/387C08K3/38C08K5/132C08K13/08C08K11/005C08K3/346C08K3/2279
Inventor 张友法苏有荣张青松蒋小平
Owner SOUTHEAST UNIV